Methods of separating a glass web

Method of separating glass mesh

METHODS OF SEPARATING A GLASS WEB

This article is generally about the method of separating the glass mesh, more specifically, it is about the method of separating the glass mesh by creating a defect on the separation path when under thermal stress, wherein the glass mesh follows the separation path in response to the defect Separated spontaneously.

It is known to separate glass ribbons to achieve a glass plate system having a desired size. The conventional separation technology realizes separation when the glass ribbon is moved, thereby avoiding the glass ribbon from uninterruptedly traversing along the traveling direction when the glass plate and the glass ribbon are separated.

The following presents a simplified summary of the present invention to provide a basic understanding of some examples described in the implementation mode.

According to some embodiments, the method of separating a glass web includes step (I): moving the glass web at a glass web speed including a glass web speed vector in a conveying direction of the moving glass web. The method further includes step (II): exposing the separation path on the glass mesh to at least one laser beam spot to generate thermal stress along the separation path, the separation path extending in a direction transverse to the conveying direction. The method further includes the step (III): moving the laser beam spot at a laser beam spot speed including a laser beam spot speed vector in the conveying direction, and the laser beam spot speed vector is equal to the glass mesh speed vector. When the glass mesh moves at the speed of the glass mesh, the separation path continues to be exposed to the laser beam spots to continue to generate thermal stress along the separation path. The method also includes step (IV): when the separation path is under the thermal stress generated during steps (II) and (III), a defect is established on the separation path, and then the glass is separated along the separation path in response to the step of establishing the defect net.

In one embodiment, step (III) includes the following steps: reflecting at least one laser beam away from the rotating reflective surface to cause the laser beam spot to move at the laser beam spot speed vector.

In another embodiment, the method further includes the step of repeatedly passing the laser beam spot along the separation path in a direction transverse to the conveying direction, so as to generate along the separation path during steps (II) and (III). Thermal Stress.

In another embodiment, the laser beam spot velocity of step (III) includes another laser beam spot velocity vector in a direction transverse to the conveying direction. When the glass mesh moves at the speed of the glass mesh and the laser beam spots continue to pass repeatedly along the separation path in the direction transverse to the conveying direction, the laser beam spots are in the conveying direction and in the direction transverse to the conveying direction. Move, and make the separation path continue to be exposed to the laser beam spot, and continue to generate thermal stress along the separation path.

In another embodiment, step (III) includes the following steps: reflecting at least one laser beam away from the first reflecting surface rotating around the first axis, so as to cause the laser beam spot to follow in a direction transverse to the conveying direction The separation path passes repeatedly. Step (III) further includes the following step: reflecting at least one laser beam away from the second reflecting surface rotating around the second axis to cause the laser beam spot to move at the laser beam velocity vector in the conveying direction of the glass mesh.

In another embodiment, at least one laser beam is reflected off the first reflective surface before the second reflective surface.

In another embodiment, at least one laser beam reflects off the second reflective surface before the first reflective surface.

In another embodiment, the first axis is perpendicular to the second axis.

In another embodiment, the step of repeatedly passing the beam spot includes the following steps: repeatedly passing the beam spot in a single direction transverse to the conveying direction.

In another embodiment, the single direction includes a direction extending from the first edge to the second edge of the glass mesh, and the created defect is closer to the first edge than the second edge.

In another embodiment, when step (III) is performed, step (IV) is performed.

In another embodiment, after achieving a predetermined level of thermal stress along the separation path during step (III), step (IV) is performed.

In another embodiment, the at least one laser beam spot of step (I) includes a plurality of laser beam spots, each of which generates thermal stress along a corresponding section of the separation path during steps (II) and (III) .

In another embodiment, each section of the separation path overlaps a portion of at least one adjacent section of the separation path.

In another embodiment, the defect of step (IV) is created by using laser or by mechanically bonding the glass mesh.

In another embodiment, the glass mesh includes a length and a width extending between the first edge and the second edge of the glass mesh, and the conveying direction is the direction of the length of the glass mesh.

In another embodiment, the glass mesh includes a glass ribbon stretched from the forming body, and the conveying direction is the stretching direction of the glass ribbon.

According to other embodiments, an apparatus for separating glass mesh includes at least one laser beam generator, a first reflector, and a second reflector. The first reflector includes a first reflective surface rotatable around a first axis. The laser beam generator is aligned with the first reflector, so that when the first reflector rotates, the laser beam generated by the at least one laser beam generator will generate a laser that repeatedly passes along the separation path on the glass mesh. Spot the beam. The second reflector includes a second reflective surface rotatable around a second axis. The second reflector is aligned with the first reflector, so that when the second reflector rotates, the laser beam spot will move in the conveying direction of the glass mesh. The first reflector is located upstream of the second reflector, so that the laser beam generated by the laser beam generator reflects off the first reflector of the first reflector before reflecting off the second reflecting surface of the second reflector surface.

In one embodiment, the first axis is perpendicular to the second axis.

In another embodiment, at least one laser beam generator is configured to generate a plurality of laser beam spots, each of which generates thermal stress along a corresponding section of the separation path.

According to other embodiments, an apparatus for separating glass mesh includes at least one laser beam generator, a first reflector, and a second reflector. The second reflector includes a second reflective surface rotatable around a second axis. The laser beam generator is aligned with the second reflector, so that when the second reflector rotates, the laser beam generated by the at least one laser beam generator will generate a laser beam moving in the conveying direction of the glass mesh spot. The first reflector includes a first reflective surface rotatable around a first axis. The first reflector is aligned with the second reflector, so that when the first reflector rotates, the laser beam spots generated by the at least one laser beam will repeatedly pass along the separation path on the glass mesh. The second reflector is located upstream of the first reflector, so that the laser beam generated by the laser beam generator will reflect off the second reflector before reflecting off the first reflecting surface of the first reflector. Reflective surface.

In one embodiment, the first axis is perpendicular to the second axis.

In another embodiment, at least one laser beam generator is configured to generate a plurality of laser beam spots, each of which generates thermal stress along a corresponding section of the separation path.

According to other embodiments, a method for separating a glass mesh includes step (I): moving the glass mesh in a conveying direction; and step (II): exposing the separation path of the glass mesh to at least one laser beam spot to follow The separation path generates thermal stress, and the separation path extends in a direction transverse to the conveying direction. The method further includes the step (III): when the separation path is under the thermal stress generated during the step (II), a defect is established on the separation path, and then the glass mesh is separated along the separation path in response to the step of establishing the defect.

Referring now to the accompanying drawings illustrating exemplary embodiments of the present invention, the apparatus and method will be described more fully below. Wherever possible, the same reference symbols are used throughout the drawings to refer to the same or similar parts. However, the present invention can be implemented in many different forms, and should not be regarded as limited to the embodiments described herein.

It should be understood that the specific embodiments disclosed herein are intended to be exemplary and therefore not restrictive. Therefore, the present disclosure relates to a method and equipment for separating glass mesh. In some embodiments, the glass mesh may include a glass ribbon formed by any glass forming process or glass manufacturing process. The glass ribbon can be provided directly from the glass forming equipment or glass manufacturing equipment, the glass ribbon can be provided as a reel of the glass ribbon that can be rolled up or wound onto the core, or the glass ribbon can be provided as an independent glass ribbon. In other embodiments, the glass mesh may include glass plates formed by any glass forming process or glass manufacturing process. The glass plate can be provided as one or more of a glass plate separated from a glass ribbon, a glass plate separated from another glass plate, a reel provided as one or more glass plates that can be rolled or wound onto the core Glass plates, stacks of glass plates, or independent glass plates.

According to the embodiments described herein, the glass mesh can be separated to form one or more additional glass meshes. In some embodiments, the one or more additional glass meshes separated from the glass mesh may include glass ribbons. The glass ribbon can be separated from the glass ribbon provided directly by the glass forming equipment or glass manufacturing equipment, the glass ribbon can be separated from the glass ribbon provided as a spool of the glass ribbon that can be rolled up or wound onto the core, or it can be provided as an independent The glass ribbon of the glass ribbon separates the glass ribbon. In other embodiments, the one or more additional glass meshes separated from the glass mesh may include glass plates. The glass sheet can be separated from the glass ribbon provided directly by the glass forming equipment or glass manufacturing equipment, the glass sheet can be separated from the glass ribbon provided as a reel of the glass ribbon that can be rolled or wound onto the core, or it can be provided as an independent The glass ribbon of the glass ribbon separates the glass plates. In yet another embodiment, a glass plate may be separated from a glass plate provided as a glass plate separated from a glass ribbon, a glass plate may be separated from a glass plate provided as a glass plate separated from another glass plate, and a glass plate may be provided as The glass plates that can be rolled or wound onto the reel of one or more glass plates on the core can separate the glass plates from the glass plates provided as a stack of glass plates, or can be separated from the glass plates provided as separate glass plates. The glass plate separates the glass plate.

In a further embodiment, the glass mesh may be separated to remove the edge portion from the remainder of the glass mesh. For example, the edge part can be discarded or further processed in an additional application.

The glass sheet separated from the glass mesh may be suitable for further processing into the desired display application. Glass plates can be used in a wide range of display applications, including liquid crystal displays (LCD), electrophoretic displays (EPD), organic light emitting diode displays (OLED), plasma display panels (PDP), or the like. Glass panels may need to be transported from one location to another. The glass plates can be transported using a conventional support frame designed to fix the stack of glass plates in place. In addition, a sandwich material can be placed between each piece of glass to help prevent contact and thus maintain the original surface of the glass plate.

Some embodiments will now be described in which the glass mesh to be separated includes a glass ribbon, although the apparatus and method of the present disclosure are not limited thereto. In fact, the apparatus and method of the present disclosure can be used to separate any of various glass meshes, such as the glass meshes described above.

In some embodiments, a method of separating a glass mesh containing a glass ribbon may be used in conjunction with glass manufacturing equipment configured to manufacture the glass ribbon, although other glass processing equipment may be provided in further embodiments. In some embodiments, the glass manufacturing equipment may include trough drawing equipment, floating bath equipment, downward drawing equipment, upward drawing equipment, rolling equipment, or other glass ribbon manufacturing equipment. By way of example,<b>NS</b><b>1</b><b>picture</b>Schematic diagram of equipment for processing a large number of glass frits, which includes a melting downward drawing equipment<b>101</b>, To fuse and stretch the glass ribbon for subsequent separation<b>103</b>, For example separated into another glass mesh, as shown in the glass plate<b>104</b>. Melting down drawing equipment<b>101</b>Can include melting vessel<b>105</b>From the storage box<b>109</b>Receive batch materials<b>107</b>. By motor<b>113</b>Powered batch conveying device<b>111</b>And the introduction of batch materials<b>107</b>. Optional controller<b>115</b>Can be used to start the motor<b>113</b>, In order to transfer the desired amount of batch materials<b>107</b>Introduce the melting vessel<b>105</b>In the arrow<b>117</b>Indicated. Glass frit probe<b>119</b>Can be used to measure on standpipes<b>123</b>Glass frit<b>121</b>Height, and through the communication line<b>125</b>Send the measured information to the controller<b>115</b> 。

Melting down drawing equipment<b>101</b>Can also include a first conditioning station (e.g. clarification vessel<b>127</b>), the first adjustment station is located in the melting vessel<b>105</b>Downstream, and by the first connecting duct<b>129</b>Coupling to melting vessel<b>105</b>. In some embodiments, the glass frit can be connected by the first connecting pipe<b>129</b>From the melting vessel<b>105</b>Feed to the clarification vessel by gravity<b>127</b>. For example, gravity can drive the glass frit, and from the melting vessel<b>105</b>Through the first connecting duct<b>129</b>Internal path to the clarification vessel<b>127</b>. In the clarification vessel<b>127</b>Inside, the bubbles can be removed from the glass frit by various techniques.

The melting and stretching equipment may further include a second adjustment station (such as a glass frit mixing vessel<b>131</b>), the second adjustment station can be located in the clarification vessel<b>127</b>Downstream. Glass frit mixing container<b>131</b>It can be used to provide a uniform glass frit composition, thereby reducing or eliminating non-uniform cords, which may be present in the clarified glass frit leaving the clarification vessel. As shown in the picture, the clarification container<b>127</b>Can be connected by a second connecting tube<b>135</b>Coupled to glass frit mixing container<b>131</b>. In some embodiments, the glass frit can be connected by the second connecting pipe<b>135</b>From the clarification container<b>127</b>Feed into the glass frit mixing vessel by gravity<b>131</b>. For example, gravity can drive the glass frit, and from the clarification vessel<b>127</b>Through the second connecting duct<b>135</b>Internal path to the glass frit mixing vessel<b>131</b> 。

The melting and stretching equipment may further include another adjustment station (such as a conveying container<b>133</b>), another adjustment station can be located in the glass frit mixing vessel<b>131</b>Downstream. Transport container<b>133</b>The glass to be fed into the forming device can be adjusted. For example, the transport container<b>133</b>It can be used as an accumulator and/or flow controller to adjust and provide a constant flow of glass frit to the forming vessel. As shown in the picture, the glass frit mixing container<b>131</b>Can be connected by a third tube<b>137</b>Coupling to the delivery container<b>133</b>. In some embodiments, the glass frit can be connected by a third connecting pipe<b>137</b>Mixing container from glass frit<b>131</b>Feed into the conveying container by gravity<b>133</b>. For example, gravity can drive the glass frit, and from the glass frit mixing container<b>131</b>Through the third connecting duct<b>137</b>The internal path to the conveying container<b>133</b> 。

As further shown, the downcomer<b>139</b>Can be positioned to transport the container from<b>133</b>Conveying glass frits<b>121</b>To form the container<b>143</b>The entrance<b>141</b>. Then, the glass ribbon can be<b>103</b>Melt stretched away to form a wedge<b>147</b>Root of<b>145</b>, And then with glass separation equipment<b>149</b>Separate into a glass mesh, such as another glass ribbon or glass plate as shown<b>104</b>. Figure 1 shows the glass separation equipment<b>149</b>A schematic diagram of<b>NS</b><b>2</b><b>-5</b> 、<b>7</b>,and<b>8</b><b>picture</b>Schematic diagram of glass separation equipment<b>149</b>Exemplary characteristics. In fact, as shown in the picture, the glass separation equipment<b>149</b>Can follow the separation path<b>151</b>The glass plate<b>104</b>With glass ribbon<b>103</b>Separate<b>151</b>Transverse to the conveying direction (such as the stretching direction<b>901</b>) Direction<b>225</b>(See<b>NS</b><b>2</b><b>picture</b>) On the extension. like<b>NS</b><b>1</b><b>picture</b>As shown, in any embodiment of the present disclosure, transverse to the conveying direction<b>901</b>The direction of<b>225</b>Can include perpendicular to the conveying direction<b>901</b>Or a direction at another angle to the conveying direction<b>225</b>. In some embodiments, the direction<b>225</b>Along the glass ribbon<b>103</b>The width of "<b>W</b>In the glass ribbon<b>103</b>The first outer edge<b>153</b>With the second outer edge<b>155</b>Extend between. like<b>NS</b><b>1</b><b>picture</b>As shown, in some embodiments, the glass ribbon<b>103</b>Conveying direction<b>901</b>It may include the stretching direction of the glass ribbon. In the illustrated embodiment, the conveying direction<b>901</b>Can be formed from a container<b>143</b>Downward fusion of stretched glass ribbon<b>103</b>The fusion stretching direction. Alternatively, if the glass ribbon is unwound from the spool of the glass ribbon, the conveying direction can be regarded as along the direction in which the glass ribbon is pulled out from the spool. In addition, if the glass mesh (for example, glass ribbon, glass plate, etc.) moves along the travel path, the conveying direction can be regarded as the direction in which the glass mesh travels along the travel path.

In one embodiment, such as<b>NS</b><b>1</b><b>picture</b>As shown, the glass ribbon<b>103</b>The length can be regarded as from forming a wedge<b>147</b>Root of<b>145</b>Extend to the outer end<b>171</b>(For example, the lower end) of the glass ribbon<b>103</b>The total length of "<b>L1</b>". In a further embodiment, the glass ribbon<b>103</b>The length of can be regarded as the total length of the glass ribbon "<b>L1</b>"a part of. For example, glass ribbon<b>103</b>The length can be regarded as along the perpendicular to the glass ribbon<b>103</b>The size of the glass ribbon in the direction of the width "W". Additionally or alternatively, the glass ribbon<b>103</b>The length can be regarded as along the glass ribbon<b>103</b>Stretch direction<b>901</b>The size of the glass ribbon.

In another embodiment, the glass separation device<b>149</b>The edge part (for example, the edge net part) may be separated from the glass net. For example, as shown in Figure 1, glass separation equipment<b>149</b>Can follow the separation path<b>163</b>The glass plate<b>104</b>The edge of<b>159</b>With glass plate<b>104</b>Center part 1<b>61</b>Separation, separation path<b>163</b>Transverse to the glass plate<b>104</b>The conveying direction extends, where the separation path<b>163</b>On the glass plate<b>104</b>The first edge<b>165</b>With the second edge<b>167</b>Extend between. In the illustrated embodiment, the separation path<b>163</b>Along perpendicular to the glass plate<b>104</b>The length of the glass plate of the conveying path "<b>L2</b>"extend.

Figure 2 icon<b>NS</b><b>1</b><b>picture</b>Schematically illustrated exemplary glass separation equipment<b>149</b>. Glass separation equipment may include generating laser beams<b>203</b>Laser beam generator<b>201</b>. In one embodiment, a laser beam generator can be used to generate a CO2 laser that can use a relatively long pulse to heat the selected path, wherein the relatively long pulse is close to a continuous energy flow. Therefore, the laser beam<b>203</b>Can be designed to heat the glass ribbon (or glass plate<b>104</b>) Select the path on the warp without damaging the glass ribbon. For the purpose of this application, heating the selected path on the glass ribbon without damaging the glass ribbon is intended to mean heating the path without damaging the glass ribbon in a manner that causes the separation of the glass ribbon without defects. Examples of heating through the selected path without damaging the glass ribbon may include heating without melting the glass ribbon, heating without melting the glass ribbon, heating without creating complete cracks in the glass ribbon, and heating without causing damage to the glass ribbon. The glass ribbon is completely scored. In fact, the laser beam<b>203</b>Can avoid damage to the glass ribbon to allow<b>103</b>Or glass plate<b>104</b>) Of the separation path<b>151</b> 、<b>163</b>The desired level of thermal stress is generated without separating the glass ribbon before applying defects, as discussed below.

like<b>NS</b><b>2</b><b>picture</b>Further illustrated, exemplary glass separation equipment<b>149</b>Can further include optional series of reflectors<b>205a</b> 、<b>205b</b> 、<b>205c</b> 、<b>205d</b>And one or more optical lenses<b>207</b>, One or more optical lenses<b>207</b>Configured to be in the glass ribbon<b>103</b>Or glass plate<b>104</b>The outer edge of<b>211a</b> 、<b>211b</b>Or main surface<b>213</b>Laser beam spot on<b>209</b>. Throughout the application, the laser beam spot<b>209</b>Is regarded as exposed to the laser beam<b>203</b>The area of the surface of the glass mesh where the laser beam<b>203</b>Intersect the surface of the glass mesh. In some embodiments, the laser beam spot may include a circular or rectangular laser beam spot, or the length may be significantly smaller than the separation path<b>151</b>The total length of the oblong laser beam spot. In a further embodiment, the laser beam spot may comprise an elongated laser beam spot, spanning the separation path<b>151</b>The entire length of or even greater than the entire length of the separation path.

In some embodiments, the glass separation device<b>149</b>Can include a first reflector, such as the polygonal reflector shown<b>215</b>. The first reflector may include a first reflective surface. For example, as shown in Figure 2, the polygonal reflector<b>215</b>May include an octagonal reflector, where the first reflective surface may include eight reflective surface sections<b>219a-h</b>, Eight reflective surface segments<b>219a-h</b>It can be integrated with each other or provided as separate sections installed close to each other. In addition, although octagonal reflectors can be used, other reflectors with more or less reflective surface sections can be used according to aspects of the present disclosure. The first reflective surface of the present disclosure, any reflective surface of the first reflector, or any reflective surface of the reflector may include the surface of a mirror that reflects light from a mirror, a reflective surface of polished metal, or other reflective surfaces . In a further embodiment, as shown in the figure, the reflective surface may be flat, although in further embodiments a curved (eg, concave, convex) surface may be provided.

In one embodiment, the method may include the following steps: by rotating the first reflector clockwise or counterclockwise, exposing along the glass ribbon<b>103</b>Or glass plate<b>104</b>Separation path<b>151</b> 、<b>163</b>One or both. For example, such as<b>NS</b><b>2-5</b><b>picture</b>and<b>NS</b><b>7-8</b><b>picture</b>Shown, polygonal reflector<b>215</b>Can be counterclockwise<b>217</b>Around the first axis of rotation<b>218</b>Rotate to divide the eight reflective surface segments<b>219a-h</b>Each of them is positioned in the laser beam in sequence<b>203</b>Within the selected path. The rotating drawing shown in the diagram shows the spot of the sweeping laser beam<b>209</b>The principle. Polygonal reflector<b>215</b>The actual configuration and/or rotation will depend on a wide range of factors, such as laser beam spots<b>209</b>Whether it is from the first outer edge of the glass ribbon<b>153</b>To the second outer edge<b>155</b>Sweep between extreme positions, or whether to spot the laser beam<b>209</b>Sweep beyond the glass ribbon, such as<b>NS</b><b>5-8</b><b>picture</b>Shown.<b>NS</b><b>9-18</b><b>picture</b>The embodiment illustrates the laser beam spot<b>209</b>At the outer edge from the first<b>153</b>To the second outer edge<b>155</b>Sweep between extreme positions. Any embodiment of this disclosure (e.g.<b>NS</b><b>9-18</b><b>picture</b>Example of) may also include such as<b>NS</b><b>5-8</b><b>picture</b>The laser beam spot shown<b>209</b>Sweep beyond the glass ribbon.

As described below, the laser beam can heat the separation path on the glass ribbon<b>151</b>. In all schemes, the separation path<b>151</b>The schematic illustration is a dashed line to understand that the actual separation path overlaps the glass ribbon, such as the edge portion and/or the main surface of the glass ribbon. As shown, the separation path<b>151</b>Separate equipment along the facing glass<b>149</b>Glass ribbon<b>103</b>The outer edge of<b>211a</b> 、<b>211b</b>With the first major surface<b>213</b>From the first outer edge<b>153</b>Extends to the second outer edge<b>155</b>, Although the separation path may extend along the opposite major surfaces of the glass ribbon or at an intermediate position between the two major surfaces of the glass ribbon. In fact, as shown in the figure, the separation path<b>151</b>Can be superimposed on the outer edge part<b>211a</b> 、<b>211b</b>Extends on the outer surface of the glass, and also overlaps the glass ribbon<b>103</b>The first major surface<b>213</b>And extend. In addition, as shown in the figure, the first outer edge portion<b>211a</b>May include first outer edge<b>153</b>, And the second outer edge part<b>211b</b>Can include a second outer edge<b>155</b>, Where the separation path<b>151</b>Can extend across a substantial part or the entire width of the glass ribbon "<b>W</b>". Similarly, refer to<b>NS</b><b>1</b><b>picture</b>,glass plate<b>104</b>Can include the first edge<b>165</b>With the second edge<b>167</b>, Where the separation path<b>163</b>Extends across the glass panel<b>104</b>A substantial part or the entire length of "<b>L2</b> 」。

The use of exemplary polygonal reflectors will now be discussed<b>215</b>Heating separation path<b>151</b><b>of</b>Exemplary method. For example, such as<b>NS</b><b>2</b><b>picture</b>As shown, with the first reflective surface section<b>219a</b>Intersect the path of the laser beam, the first reflective surface section<b>219a</b>The first edge of<b>221a</b>Initially with laser beam<b>203</b>The paths intersect to reflect and spot with the laser beam<b>209</b>Exposure across the glass ribbon<b>103</b>Separation path<b>151</b>The upstream end of<b>221</b>. In fact, as shown in the figure, the separation path<b>151</b>The upstream end of<b>221</b>Exposure to the laser beam spot<b>209</b>To heat the separation path at this location<b>151</b>. With polygonal reflector<b>215</b>Around the first axis of rotation<b>218</b>Counterclockwise<b>217</b>Rotation, first reflective surface section<b>219a</b>The angle of the laser beam is changed, which makes the laser beam spot<b>209</b>Along from the glass strip<b>103</b>The first outer edge part<b>211a</b>Towards the second outer edge part<b>211b</b>The direction of<b>225</b>March.

<b>NS</b><b>3</b><b>picture</b>Illustrated rotating polygonal reflector<b>215</b>, While making the first reflective surface section<b>219a</b>The middle part of<b>221b</b>With laser beam<b>203</b>The paths essentially intersect to reflect and spot with laser beams<b>209</b>Exposure to separate paths<b>151</b>Middle position<b>301</b>, Thereby heating the path at this location.

like<b>NS</b><b>4</b><b>picture</b>Further illustration, polygonal reflector<b>215</b>Even further around the first axis of rotation<b>218</b>Counterclockwise<b>217</b>Rotate so that the first reflective surface section<b>219a</b>Second edge<b>221c</b>The path of the laser beam is substantially intersected for reflection, and the laser beam is spotted<b>209</b>Exposure to separate paths<b>151</b>The downstream end of<b>401</b>, Thereby heating the separation path at this location.<b>NS</b><b>4</b><b>picture</b>Shown around the first axis of rotation<b>218</b>Counterclockwise<b>217</b>The further increase of the rotation will cause the second reflective surface section<b>219</b>the first edge of b<b>403</b>With laser beam<b>203</b>The paths intersect where the laser beam spot<b>209</b>Will be separated from the path<b>151</b>The downstream end of<b>401</b>Disappear and be in the separation path<b>151</b>The upstream end of<b>221</b>Reappear like<b>NS</b><b>2</b><b>picture</b>Shown. Of course, since the actual laser beam contains a finite diameter, the laser beam will be reflected from adjacent parts of adjacent reflective surface sections at the same time in a short time. At this point in time, the laser beam spot<b>209</b>Part of it appears at the outer extreme of the sweep path at the same time. For example, referring to Figure 4, during a short period of time, the laser beam<b>203</b>From the first reflective surface section<b>219a</b>Second edge<b>221c</b>With the second reflective surface section<b>219b</b>The first edge of<b>403</b>Reflected simultaneously. At this point in time, the laser beam spot<b>209</b>Can partly appear in<b>NS</b><b>4</b><b>picture</b>Shown in the position, and part of it appears in<b>NS</b><b>2</b><b>picture</b>In the location.

Therefore, the heating step may include the following steps: along the separation path<b>151</b>Repeatedly make the laser beam spot<b>209</b>Pass to follow the separation path<b>151</b>Generate thermal stress. In addition, in the illustrated embodiment, the laser beam spotting is repeated<b>209</b>The steps passed can optionally include the following steps: in a single direction<b>225</b>Repeat to make the laser beam spot<b>209</b>pass through. In fact, with the polygonal reflector<b>215</b>Around the first axis of rotation<b>218</b>Counterclockwise as shown<b>217</b>Rotating, while the reflective surface section<b>219a-h</b>Each of them intersects the path of the laser, the laser beam spot<b>209</b>Always separated from the path<b>151</b>The upstream end of<b>221</b>To the downstream end<b>401</b>In a single direction<b>225</b>move. Depends on polygonal reflector<b>215</b>Rotation speed, the laser beam spot can be along a single direction<b>225</b>Travel at various speeds. For example, the laser beam spot can follow a separate path<b>151</b>Traveling from about 0.5 km/s to about 6 km/s, for example from about 1 km/s to about 5 km/s, for example from about 2 km/s to about 4 km/s, for example about 3 km/s.

Although not shown, in further embodiments, various methods can be used to heat the separation path<b>151</b>. For example, multiple laser beam generators can be provided<b>201</b>, And/or the laser beam generated by the laser beam generator can be divided into two or more laser beams to simultaneously reflect the laser beam from different mirrors of the polygonal reflector and/or different parts of the same mirror. Therefore, multiple laser beam spots can be provided, depending on the glass separation device<b>149</b>Optical configuration to follow a single direction<b>225</b>Separation path<b>151</b>Or travel in opposite directions at the same time. In another embodiment, the laser beam generator<b>201</b>Laser beam<b>203</b>Can be extended into a slender laser beam spot to heat the entire separation path at the same time<b>151</b>. In these embodiments, the laser beam spot<b>209</b>Can remain stationary while heating the entire separation path at the same time<b>151</b>. In a further example, a plurality of stationary laser beam spots can be provided to heat the entire separation path<b>151</b>. For example, stationary laser beam spots can be positioned end-to-end, where the total length of all laser beam spots is along the separation path<b>151</b>The entire length of the extension, or greater than the separation path<b>151</b>The entire length. In a further embodiment, the stationary laser beam spots may be positioned to partially overlap each other, wherein the total length of all laser beam spots is also along the separation path<b>151</b>The entire length of or greater than the separation path<b>151</b>The entire length extends.

In yet another embodiment, a plurality of glass separation equipment can be provided<b>149</b>, Each glass separation equipment<b>149</b>Exposure laser beam spot<b>209</b>Section of the entire separation path. For example, such as<b>NS</b><b>8</b><b>picture</b>As shown, multiple glass separation equipment can be provided<b>149</b>, And optionally similar or the same as the above-mentioned glass separation equipment<b>149</b>. It should be understood that despite the<b>NS</b><b>8</b><b>picture</b>There are five glass separation equipment shown in the figure<b>149</b>, But this description should not limit the scope of the appended claims. Therefore, any number of glass separation devices (for example, from 1, 2, 3 to more than 5 glass separation devices) can be used in the requested subject embodiment. Each glass separation equipment<b>149</b>Can produce laser beam<b>802</b> 、<b>804</b> 、<b>806</b> 、<b>808</b> 、<b>810</b>, And the individual laser beam spots provided by each laser beam can be used<b>209</b>And the corresponding heating zone along the entire separation path<b>801</b> 、<b>803</b> 、<b>805</b> 、<b>807</b> 、<b>809</b>Generate thermal stress. In some embodiments, the heating section may be positioned end-to-end to heat the separation path. However, as shown in the figure, each heating zone can be in the overlapping area<b>811</b> 、<b>813</b> 、<b>815</b> 、<b>817</b>Overlap with at least one adjacent heating section to provide sufficient heating of the separation path between the sections. In some embodiments, the overlapping area may include a heating zone<b>801</b> 、<b>803</b> 、<b>805</b> 、<b>807</b> 、<b>809</b>The overlapping length of at least one of the lengths is from about 5% to about 40%, for example, from about 10% to about 30%, for example, about 10% to about 25%, of the length of at least one of the heating sections. In one embodiment, each corresponding heating zone<b>801</b> 、<b>803</b> 、<b>805</b> 、<b>807</b> 、<b>809</b>Can have a length of about 800 millimeters (mm), and each overlapping area<b>811</b> 、<b>813</b> 、<b>815</b> 、<b>817</b>Has an overlap length of about 100 mm. Providing sections and optional overlapping areas can help achieve a sufficient level of thermal stress along the entire separation path that the glass ribbon extends.

Some embodiments herein show that the laser beam spot travels across a substantial portion of the glass ribbon (such as the entire size of the glass ribbon), while in other embodiments, the laser beam spot is also shown to travel away from the glass ribbon. Therefore, the separation path<b>151</b> 、<b>163</b>It can similarly extend across a substantial portion of the glass ribbon (for example the entire size of the glass ribbon). For example, as shown in the figure, the laser beam spot<b>209</b>Along the glass ribbon<b>103</b>The entire width of "<b>W</b>From the first outer edge<b>153</b>Pass to the second outer edge<b>155</b>, Which makes the separation path<b>151</b>Extended glass ribbon<b>103</b>The entire width of "<b>W</b>". Similarly, as<b>NS</b><b>1</b><b>picture</b>Further illustration, the laser beam spot<b>209</b>Along the glass plate<b>104</b>The entire length of "<b>L2</b>From the first edge<b>165</b>Pass to the second edge<b>167</b>, Which makes the separation path<b>163</b>Extended glass panel<b>104</b>The entire length of "<b>L2</b>". In some embodiments, the separation path<b>151</b> 、<b>163</b>It can be from about 50 mm to about 5000 mm, for example from about 50 mm to about 1000 mm, although in a further embodiment, the laser beam spot<b>209</b>Can travel along longer or shorter paths.

Laser beam spot<b>209</b>Circular spots may be included, although oval or other spot shapes may be provided in further examples. When the intensity distribution of the spot is determined to be 1/e²When, circular laser beam spot<b>209</b>The minimum diameter of φ can be from about 1 mm to about 2 mm at the focused waist, although other sizes may be provided in further embodiments. Similarly, the maximum length of an oval or other spot shape may be from about 1 mm to about 3 mm, although other sizes may be provided in further embodiments. For example, when using a stationary laser beam, the spot shape of the laser beam can be substantially extended and have a length of tens of centimeters, for example, a length of more than 1 meter. One or more stationary laser beam spots can be used for the exposure separation path 151.

<b>NS</b><b>2-5</b><b>picture</b> 、<b>NS</b><b>7</b><b>picture</b>,and<b>NS</b><b>8</b><b>picture</b>Show an embodiment in which the laser beam<b>203</b>In the first external position<b>40</b>5 with the second external position<b>407</b>Sweep between (see<b>NS</b><b>2</b><b>picture</b> 、<b>NS</b><b>5</b><b>picture</b> 、<b>NS</b><b>7</b><b>picture</b>,and<b>NS</b><b>8</b><b>picture</b>). In any of the embodiments herein, the laser beam<b>203</b>It is possible to travel away from the glass ribbon during the step of heating the separation path. For example, such as<b>NS</b><b>5</b><b>picture</b> 、<b>NS</b><b>7</b><b>picture</b>,and<b>NS</b><b>8</b><b>picture</b>As shown, the laser beam<b>203</b>The sweep can optionally be in an external position<b>501</b> 、<b>503</b>Extend between, where the outer position<b>501</b> 、<b>503</b>Are located on the first and second outer edges<b>153</b> 、<b>155</b>Outside. Similarly, although not shown,<b>NS</b><b>9-18</b><b>picture</b>The sweep of the laser beam can also travel away from the glass ribbon during the heating step. Allows the laser beam to sweep beyond the glass ribbon during heating to ensure a separate path<b>151</b>All parts of the machine reach a sufficient level of thermal stress.

like<b>NS</b><b>5</b><b>picture</b>As shown further, when the separation path is exposed along the glass ribbon<b>151</b>Time, the glass ribbon can be positioned so that the entire separation path<b>151</b>Located at the focal depth of the laser beam "<b>DOF</b>"Inside. Depth of focus<b>DOF</b>"Can be calculated by the following formula:<img file="TWI719081B_D0001.tif" />in"<b>F</b>"Is a lens<b>207</b>The focal length of "<b>D</b>"Is the beam diameter before the lens, and"<b>λ</b>"Is the wavelength.

Separate the entire path<b>151</b>Positioning in the laser beam<b>203</b>The depth of focus can help increase the separation path from the laser beam<b>151</b>The efficiency of energy transfer. Since the focal depth of the laser beam exceeds the amplitude of glass warping and the thickness change and movement of the glass ribbon during separation, the focal depth enables the separation of uneven glass with variable thickness, and can also be compared to the laser beam generator<b>201</b>Move or change some degree of orientation. In some embodiments, the depth of focus "<b>DOF</b>"May be from about 20 mm to about 400 mm, for example from about 20 mm to about 200 mm, although other focal depths may be provided in further embodiments.

Furthermore, in some embodiments, the entire glass ribbon except for the path of the glass ribbon may be positioned within the depth of focus. The focal depth of the laser beam can be large enough to exceed changes in glass thickness, glass warpage, or other possible changes in the position of the glass ribbon, and the separation path on the glass ribbon relative to the laser beam generator during the method herein .

In addition, in some embodiments, when the laser beam spot is repeatedly passed along the separation path 151 (especially near the end of the separation path), the laser beam spot on the main surface of the glass ribbon<b>209</b>The size will change. For example, when the laser beam<b>203</b>Follow the sweep path<b>507</b>Or sweep path<b>509</b>When focusing, the laser beam spot on the main surface of the glass ribbon<b>209</b>The size can follow the separation path<b>151</b>The change, although other sweep paths can be provided, the glass ribbon remains within the depth of focus.

like<b>NS</b><b>6</b><b>picture</b>As shown, due to the separation path<b>151</b>Laser beam spot<b>209</b>The diameter and shape of the change, if it follows the sweep path<b>509</b>Marching, the laser beam spot<b>209</b>Can follow the separation path<b>151</b>Apply varying power density, such as the intercepted elliptical power density area<b>601</b>Shown. exist<b>NS</b><b>6</b><b>picture</b>In the illustrated embodiment, since the laser beam spot deliberately travels away from the glass ribbon, the laser beam spot on the surface of the glass ribbon is intercepted<b>209</b>Oval power density area<b>601</b>. In a further embodiment, a non-truncated elliptical power density area may be provided. For example, the end point of the elliptical power density area may be located on the glass ribbon in some embodiments<b>103</b>The first and second outer edges of<b>153</b> 、<b>155</b>Place. When the outer edge part<b>211a</b> 、<b>211b</b>When including thickened edge beads, use two laser beams<b>203</b>Separating the glass ribbon is even more advantageous, two laser beams<b>203</b>The system produces the maximum power density near or at the thickened edge (such as the edge bead), and the part of the individual laser beam spot overlaps the central area of the glass ribbon. As the maximum power density approaches or is located at the thickened edge, higher thermal stress can be directed to the thickened edge bead, resulting in increased thermal stress. At the same time, due to the double exposure from overlapping laser beam spots, the relatively low power density provided by the tail of the partially overlapping laser beam spots can provide enhanced thermal stress. This overlap can also be provided as<b>NS</b><b>8</b><b>picture</b>Overlap area shown<b>811</b> 、<b>813</b> 、<b>815</b> 、<b>817</b>Among them, the double exposure can indicate that the low power density at the outer end of the heating section helps to achieve a sufficient level of thermal stress along the entire separation path of the glass ribbon.

Separation path<b>151</b>The local heating is along the separation path<b>151</b>There is a temperature difference between the different parts of the glass ribbon that establishes the thermal stress. As mentioned above, the heating separation path can be implemented<b>151</b>Treatment until a predetermined level of stress is reached. In some embodiments, the preferred predetermined level of stress corresponds to the<b>151</b>The temperature stress is from about 70% to about 100% of the strain point of the glass, for example from about 80% to about 100% of the strain point of the glass, for example from about 90% to about 100%, for example from about 95 % To about 100%. This level of heating avoids residual stress in the glass ribbon. In a further embodiment, the predetermined level of stress corresponds to along the separation path<b>151</b>The temperature stress is from the strain point to the annealing point of the glass. Although low temperatures are feasible, it is sometimes desirable to reach relatively high temperatures to maximize the separation path<b>151</b>Thermal stress. Providing relatively high thermal stresses can help reduce the separation time after imperfections are fully discussed below. In some embodiments, the separation time may be from about 0.1 seconds to about 3 seconds after the defect is established, although other separation times are possible in further embodiments.

The time required to heat the separation path to a desired level of thermal stress may depend on a wide range of factors, such as laser power, type of glass, size of glass, its thickness, or other factors. In some embodiments, the separation path<b>151</b> 、<b>163</b>The CO2 laser power can be used to heat in a range from about 0.1 second to about 5 seconds, where the CO2 laser power ranges from about 300 W to about 1.5 kW, and the glass thickness ranges from about 0.1 mm to about 3 mm.

As mentioned above, the method of separating glass ribbons (such as glass ribbons, glass plates, etc.) may include the following steps:<b>151</b>Exposure to at least one laser beam spot<b>209</b>, To generate thermal stress along the separation path without damaging the glass ribbon. The method may also include the following steps: when the separation path is in the glass ribbon, the separation path on the glass ribbon is exposed to at least one laser beam spot<b>209</b>When the thermal stress generated during the step of, a defect is established on the separation path, in which the glass ribbon is automatically separated along the separation path in response to the defect.

In one embodiment, the separation path is exposed to at least one laser beam spot<b>209</b>Along the separation path during the steps<b>151</b>After the predetermined level of thermal stress, defects are generated. In fact, as the entire separation path is under a predetermined level of thermal stress, the initiation of the defect directly causes the glass ribbon to automatically separate along the separation path in response to the defect. As the defect is established or immediately after the defect is established, automatic separation will begin. Therefore, the separation of the glass ribbon can occur as a direct result of defects based on the use of laser beam spots<b>209</b>The achieved predetermined level of thermal stress quickly propagates the complete crack along the entire separation path to separate the glass ribbon without the aid of other separation forces, such as bending, quenching, or applying stress to the glass plate in other ways. The term full-body crack as used herein refers to a crack that extends through the entire thickness of the glass ribbon. Compared with the prior art, the time for separating the glass mesh (for example, the glass ribbon) according to the aspect of the present disclosure can significantly reduce the time required for separating the glass mesh. Therefore, the aspect of the present disclosure is beneficial to the application of rapid separation of the glass mesh compared with the prior art. For example, in applications with increased stretching speeds, rapid separation is beneficial to allow separation to occur within a given length of travel of the glass ribbon. In addition, the method of the present disclosure can separate the glass ribbon even at a high temperature. For example, separation occurs when the glass ribbon is at room temperature, and separation can also occur when the glass ribbon is at high temperature (usually below the glass strain point, for example at temperatures up to 400°C, although it can be provided in further examples Other maximum temperature). Therefore, the method of the present disclosure can provide separation before the glass ribbon is cooled during the forming process or during other processing procedures.

In one embodiment, such as<b>NS</b><b>7</b><b>picture</b>As shown, in any of the above embodiments, the selected separation path may be exposed to at least one laser beam spot during execution.<b>209</b>In the step of generating thermal stress along the separation path, the step of establishing a defect is performed. Establishing defects while exposing the separation path can help maintain a sufficient level of thermal stress along the separation path to provide rapid separation that occurs automatically in direct response to the establishment of the defect. In some embodiments, after the step of establishing the defect is started, the step of selecting the separation path can be completed, and it can even continue to complete the automatic separation of the glass ribbon along the separation path. When the exposure separates the path, another advantage of establishing defects is to reduce the possibility of uncontrollable fractures, where uncontrollable fractures may start during the exposure (heating) period when the defect is established before the exposure. This allows reliable strengthened glass, laminated glass structure, and any other glass products with high internal stress to be reliably separated. Also, when the path is exposed, another advantage of establishing defects is to reduce the overall time required for separation.

In a further embodiment, the exposure path selects the separation path<b>151</b>The steps can be completed just before the establishment of the defect, when the defect is established, immediately after the establishment of the defect, or shortly after the establishment of the defect. In such embodiments, when there is sufficient residual thermal stress along the separation path to provide automatic separation along the separation path, defects can still be established. However, in some embodiments, the path can be separated by separating the path during and even after the defect is created (for example, during the entire separation period of the glass ribbon).<b>151</b>Continuous exposure to at least one laser beam spot<b>209</b>To increase the speed of separation. In fact, when a defect is established, continuous exposure to the separation path can increase the separation speed by maintaining a predetermined thermal stress (for example, the maximum thermal stress along the separation path). However, overexposure of the separation path should be avoided to minimize or avoid the generation of residual stress along the separated edge due to overheating.

The steps to create defects can be performed in various ways. For example, such as<b>NS</b><b>1</b><b>picture</b>Schematic illustration, in one embodiment, it is possible to use a mechanical tool<b>701</b>(Such as scoring wheel, engraving machine, rotating tool (rotating disc), diamond tip, etc.) and mechanically joining the glass ribbon<b>103</b>To create defects. In fact, like<b>NS</b><b>7</b><b>picture</b>As shown, scoring pieces<b>70</b>1 tip can create defects<b>703</b>, Such as surface flaws (such as surface cracks). In a further embodiment, the defect may be provided as a point defect or a scored line segment. Although not shown, a support device (such as an air bearing or a mechanical contact support assembly) can be provided to help resist the scoring<b>701</b>The force applied to promote defects<b>703</b>The establishment.

In another embodiment, such as<b>NS</b><b>1</b><b>picture</b>As shown, a laser beam generator can be used<b>169</b>Build defects. In one embodiment, the laser may include a pulsed laser, which may be used to create defects (such as surface flaws), although subsurface flaws may be provided. In some embodiments, the laser beam generator<b>169</b>The generated defects may include cracks, point defects, scored line segments, or other defects, where the defect can be optionally created by an ablation process. In some embodiments, the defect may be located on the outwardly facing side opposite the side of the glass ribbon exposed to the laser beam spot. For example, such as<b>12</b><b>picture</b>and<b>NS</b><b>17</b><b>picture</b>As shown, the laser beam generator<b>169</b>The glass ribbon positioned to be opposite to the side of the glass ribbon exposed to the laser beam spot<b>103</b>Defects are provided on the outward facing side. In a further example, the defect may be located on the inwardly facing side exposed to the laser beam spot, and may even include defects on both sides of the glass ribbon. For example,<b>NS</b><b>12</b><b>picture</b>and<b>NS</b><b>17</b><b>picture</b>The laser beam generator shown can be positioned on the other side of the glass ribbon to provide defects on the inwardly facing side exposed to the laser beam spot, and can even be positioned on both sides of the glass ribbon to Defects are provided on both sides of the glass ribbon. In addition, the defect can also be located on the outer edge of the belt, at one corner, at two corners (for example, two defects), or a continuous defect extending from the inwardly facing surface to the outwardly facing surface.

In some embodiments, providing the defect as a score line segment can be beneficial to help along the separation path<b>151</b> 、<b>163</b>The direction guides the proper complete body crack. For example, the score line segment can have a separation path along the<b>151</b> 、<b>163</b>The length of the extension and the width perpendicular to the separation path. Exemplary score line segments can have a wide range of lengths and widths, for example, the length ranges from about 0.5 mm to about 5 mm, and the width ranges from about 0.1 mm to about 0.3 mm. If it is provided as a surface defect, the depth of the defect can range from about 5 microns to about 500 microns, depending on the type of glass. For example, in the case of chemically strengthened glass, deeper defects can be provided to reach the chemically strengthened layer over the glass ribbon.

Along the separation path<b>151</b> 、<b>163</b>Defects provided in any location (eg on the separation path)<b>703</b>. In one embodiment, the defect is located close to the first and second outer edges of the glass ribbon<b>153</b> 、<b>155</b>One of them. In one embodiment, the defect is located close to the laser beam spot<b>209</b>The first outer edge at the beginning of the sweep<b>153</b>(As described below) is advantageous. For example, such as<b>NS</b><b>7</b><b>picture</b>As shown, the defect<b>703</b>Can be applied to glass ribbon<b>103</b>The first outer edge<b>153</b>With the second outer edge<b>155</b>In between, or in a further embodiment, the defect may be provided at the first edge and/or the second edge. Applying the defect between the first edge and the second edge can be beneficial to help ensure that the crack starts to propagate at the location of the defect (rather than at edge defects that may be present at the edge of the glass ribbon). In addition, imperfections are applied to the glass ribbon<b>103</b>The separation between the first edge and the second edge of the glass ribbon can also result in a faster separation of the glass ribbon. In some embodiments, the defect can be established on the thickened edge beads, which are collectively found in the glass ribbon<b>103</b>The outer edge of<b>211a</b> 、<b>211b</b>Place. Alternatively, such as<b>NS</b><b>7</b><b>picture</b>and<b>NS</b><b>8</b><b>picture</b>As shown, the defect can optionally be provided at the inside of the thickened edge bead. In some embodiments, the defect is established at a distance from at least one edge of the glass ribbon, where the distance is from about 1 mm to about 25 mm. For example, such as<b>NS</b><b>7</b><b>picture</b>and<b>NS</b><b>8</b><b>picture</b>As shown, in some embodiments, the defect<b>703</b>Can be built on the first edge (e.g.<b>153</b> 、<b>165</b>) A distance from about 1 mm to about 25 mm (for example, from about 1 mm to about 10 mm, although different distances may be provided in further embodiments).<b>D</b>"Place.

In some embodiments, the defect can be established at the central part of the separation path or close to the glass ribbon<b>103</b>The first edge or the second edge. In one embodiment, such as<b>NS</b><b>7</b><b>picture</b>As shown, compared to the second outer edge<b>155</b>,defect<b>703</b>Can be built closer to the first outer edge<b>153</b>Place. When the laser beam spot<b>209</b>From the first outer edge of the glass ribbon<b>153</b>Towards the second outer edge<b>155</b>In a single direction<b>225</b>When traveling (as discussed above), near the first outer edge of the glass ribbon<b>153</b>Provide defects<b>70</b>3 (e.g. with the first outer edge<b>153</b>Separated by a distance "<b>D</b>") will be particularly advantageous. In this embodiment, the glass ribbon<b>103</b>The first outer edge<b>153</b>Tied in a single direction<b>225</b>Spot along the laser beam<b>209</b>Upstream of the path of travel. With complete body cracks tend to spot in the laser beam<b>209</b>Single direction<b>225</b>Upward propagation, positioning the defect closer to the first outer edge of the glass ribbon<b>153</b>Can help in the direction<b>225</b>The width (or length) of the upper span of the glass ribbon quickly propagates the complete body crack downstream. In addition, the defect<b>703</b>Can be positioned close enough<b>D</b>", but also allows the complete body crack to propagate upstream and reach the first outer edge<b>153</b>intersect.

In addition, refer to<b>NS</b><b>8</b><b>picture</b>, Laser beam<b>802</b> 、<b>804</b> 、<b>806</b> 、<b>808</b> 、<b>810</b>Can be timed to allow the laser beam spot of each laser beam to follow the corresponding single direction in a continuous form<b>225a</b> 、<b>225b</b> 、<b>225c</b> 、<b>225d</b> 、<b>225e</b>Travel so that adjacent laser spots can follow the overlapping area<b>811</b> 、<b>813</b> 、<b>815</b> 、<b>817</b>Co-exist. Therefore, the laser beam spot can travel substantially continuously across the length or the entire width of the glass ribbon in a single direction, which helps to rapidly drive the complete body crack along the entire separation path.

Any of the methods discussed above can be applied to separate glass mesh, such as glass plates or glass ribbons. Therefore, referring to the glass ribbon<b>103</b>The embodiments discussed can also be applied to glass plates<b>104</b>Or other glass mesh. For example, as reference<b>NS</b><b>1</b><b>picture</b>Shown, the separation path<b>151</b>Available in glass ribbon<b>103</b>The first outer edge<b>153</b>With the second outer edge<b>155</b>Extends across the glass ribbon<b>103</b>The width of "<b>W</b>". In such an embodiment, the establishment of defects is tied to the glass ribbon<b>103</b>Separate glass plates<b>104</b>,like<b>NS</b><b>1</b><b>picture</b>Shown. In the same way<b>NS</b><b>1</b><b>picture</b>In the further embodiment shown, the separation path<b>163</b>Available on the first edge of the glass plate<b>165</b>With the second edge<b>167</b>Between the glass panels<b>104</b>length"<b>L2</b>"extend. In such embodiments, the creation of defects can be used to remove the glass plate<b>104</b>The edge of<b>159</b>From glass plate<b>104</b>The central part of<b>161</b>Separate.

Any of the above methods can promote the separation of a wide range of glass ribbons. The glass ribbons can be flat (as shown in the figure), or can have a non-flat (for example, warped) configuration (for example, curved into a C shape, an S shape) Or other configurations. In addition, any method can facilitate the separation of glass ribbons having a substantially uniform thickness or a non-uniform variable thickness. For example, as shown in the figure, a glass ribbon with a relatively thick edge bead and a relatively thin central portion can be separated.

In another embodiment, the glass ribbon can be separated when the glass ribbon is relatively stationary or when the glass ribbon is in motion. For example, as the glass ribbon is stretched from the forming assembly while moving, or if the glass ribbon oscillates and/or twists slightly relative to the forming assembly, the glass ribbon can be separated. Still further, any of the methods herein can be used to separate glass ribbons, where the glass ribbon is at a high temperature without approximately exceeding the strain point of the glass ribbon.

In addition, the method herein can be used to separate non-strengthened glass or strengthened glass. For example, these methods can be used to separate strengthened glass ribbons (such as chemically strengthened glass ribbons), including at least one outer layer under compression and another layer under tension. In a specific embodiment, the method herein can be used to separate a strengthened glass ribbon whose two sides are strengthened, wherein the two main surfaces of the glass ribbon are in compression, and the central part of the glass ribbon is in tension.

In a further embodiment, the methods herein can be used to separate glass ribbons containing laminated glass ribbon layers. In one embodiment, the laminated structure may be provided with a compressible surface layer and a central layer under tension. In another embodiment, the laminated structure may be provided with two compressed surface layers, wherein the central layer under tension is sandwiched between the two compressed layers. In still further embodiments, the method herein can be used to separate laminated glass ribbon layers, where at least two of the plurality of layers include different compositions and/or different thermal expansion coefficients. In other embodiments, the glass ribbon may be a chemically or thermally strengthened glass ribbon, where the glass ribbon includes a surface compressive stress layer by ion exchange or heat treatment.

In further embodiments, the focal depth of the laser beam may exceed the amplitude of the thickness change of the glass ribbon, the amplitude of warping, the amplitude of glass movement relative to the beam source, or other changes in the processing state.

<b>NS</b><b>9-18</b><b>picture</b>The picture shows that the glass ribbon can be separated when the glass ribbon moves along the length of the glass ribbon<b>103</b>Exemplary equipment and methods. Unless otherwise stated, the above discussion and reference<b>NS</b><b>1-8</b><b>picture</b>The aspect of this disclosure can be applied to<b>NS</b><b>9-18</b><b>picture</b>Exemplary equipment and methods.

<b>NS</b><b>9-13</b><b>picture</b>The illustration is used to put the glass plate<b>104</b>Exemplary glass separation device separated from glass ribbon 103<b>949</b> 。<b>NS</b><b>14-18</b><b>picture</b>The illustration is used to put the glass plate<b>104</b>With glass ribbon<b>103</b>Another exemplary glass separation device for separation<b>1449</b> 。<b>NS</b><b>9-13</b><b>picture</b>and<b>NS</b><b>14-18</b><b>picture</b>The embodiment can be compared with<b>NS</b><b>1-7</b><b>picture</b>Example shown (and<b>NS</b><b>8</b><b>picture</b>In the copy) similar or the same, but can be simplified to optionally remove the reflector<b>205a-c</b>One or more of them. Each glass separation equipment<b>949</b> 、<b>1449</b>Including at least one laser (e.g. laser beam generator<b>201</b>) To produce the laser beam as fully discussed above<b>203</b>. Each glass separation equipment<b>949</b> 、<b>1449</b>It further includes a first reflector, such as the above-mentioned polygonal reflector<b>215</b>. As mentioned earlier, the polygonal reflector<b>215</b>It may include the first reflective surface previously discussed. The first reflective surface may surround the first rotation axis<b>218</b>Rotate (e.g. counterclockwise<b>217</b>). As mentioned above, in some embodiments, the polygonal reflector<b>215</b>The first reflective surface<b>219</b>Can include eight reflective surface segments similar or identical to the previously discussed<b>219a-h</b>The plurality of reflective surface sections. like<b>NS</b><b>9-13</b><b>picture</b>and<b>NS</b><b>14-18</b><b>picture</b>The embodiment further illustrates that a plurality of reflective surface sections may surround the first rotation axis<b>218</b>Rotate (e.g. counterclockwise<b>217</b>) To transfer the laser beam<b>203</b>Reflected from the reflective surface section to cause the resulting laser beam spot<b>209</b>Transverse to the conveying direction<b>901</b>In the direction (such as the width of the glass ribbon "<b>W</b>"Direction) along the glass ribbon<b>103</b>Separation path<b>151</b>Repeat the pass to follow the separation path<b>151</b>Generate thermal stress.

like<b>NS</b><b>9-13</b><b>picture</b>and<b>NS</b><b>14-18</b><b>picture</b>As shown in the example, the glass plate is used to<b>104</b>With glass ribbon<b>103</b>Separated glass separation equipment<b>949</b>Further includes a second reflector<b>205d</b> 、<b>1401</b>, Which includes respective second reflective surfaces<b>206</b> 、<b>1402</b>, And can be along the direction<b>903</b> 、<b>1405</b>Around the corresponding second axis of rotation<b>227</b> 、<b>1403</b>Rotate to reflect the laser beam<b>203</b>, Which causes laser beam spots<b>209</b>In the conveying direction<b>901</b>Move up. In some embodiments, the method includes the following steps: to include the conveying direction<b>901</b>The laser beam spot velocity vector on the laser beam spot velocity moves the laser beam spot<b>209</b>, Conveying direction<b>901</b>The spot velocity vector of the laser beam on is equal to the conveying direction<b>901</b>Speed vector on the glass net. Therefore, the laser beam spot<b>209</b>Keep on the same separation path<b>151</b>On, to continuously heat the separation path<b>151</b>, And so even if the glass ribbon<b>103</b>In the conveying direction<b>901</b>(For example, the stretching direction) moves up and also along the separation path<b>151</b>Continuously increase thermal stress. In the downward stretching process, the laser beam spot<b>209</b>Can be included in the stretch direction<b>901</b>Velocity vector on, stretch direction<b>901</b>The velocity vector on is equal to or substantially equal to the glass ribbon in the stretching direction<b>901</b>Speed. Therefore, the laser beam spot<b>209</b>Keep it in the glass ribbon<b>103</b>The same separation path<b>151</b>In order to continuously heat the separation path, and therefore even if the glass ribbon is in the glass ribbon<b>103</b>Moves in the stretching direction, and also along the separation path<b>151</b>Continuously increase thermal stress.

like<b>NS</b><b>9-13</b><b>picture</b>with<b>NS</b><b>14-18</b><b>picture</b>As shown, the first rotation axis<b>218</b>Can be perpendicular to the second axis of rotation<b>227</b> 、<b>1403</b>, Although it depends on the laser beam spot<b>209</b>The first axis and the second axis can be oriented at another angle with respect to each other.

In some embodiments, the first reflector may be positioned upstream or downstream of the second reflector. For example,<b>NS</b><b>9-13</b><b>picture</b>Glass separation equipment<b>949</b>An embodiment is shown in which the second reflector<b>205d</b>Located in the first reflector<b>215</b>Upstream, which makes the laser beam<b>203</b>The reflection leaves the first reflector<b>215</b>The first reflective surface<b>219</b>The previous reflection leaves the second reflector<b>205d</b>Second reflective surface<b>206</b>. like<b>NS</b><b>2-7</b><b>picture</b>As shown, it can surround the second axis of rotation<b>227</b>Rotating second reflector<b>205d</b>Can provide glass separation equipment fully discussed above<b>149</b>middle. In such embodiments, the glass separation device<b>149</b>Can include around the second axis of rotation<b>227</b>Rotate the second reflective surface<b>206</b>Options. In some embodiments, the separation device may allow the option to avoid the second reflective surface<b>206</b>Rotation. In applications where the glass ribbon does not move along the length of the glass ribbon, avoid the second reflective surface<b>206</b>The rotation may be desired.

Alternatively,<b>NS</b><b>14-18</b><b>picture</b>Glass separation equipment<b>1449</b>An embodiment is shown in which the first reflector<b>215</b>At the second reflector<b>1401</b>Upstream, which makes the laser beam<b>203</b>The reflection leaves the second reflector<b>1401</b>Second reflective surface<b>1402</b>Before reflecting off the first reflector<b>215</b>The first reflective surface<b>219</b>. In this embodiment, you can use<b>NS</b><b>2-7</b><b>picture</b>The configuration shown, where all reflectors<b>205a-d</b>Does not include the ability to rotate. Therefore, the glass separation device can be used in applications where the glass ribbon does not move along the length of the glass ribbon. Alternatively, in addition to allowing the laser beam spot to move in the length direction of the glass ribbon, a second reflector can also be provided<b>1401</b> 。

In some embodiments, at least one laser beam generator<b>201</b>Multiple laser beam spots can be generated<b>209</b>, Each along the separation path<b>151</b>The corresponding heating zone generates thermal stress. For example, such as<b>NS</b><b>8</b><b>picture</b>Shown, shown second reflector<b>205d</b>Each of them may include a reflective surface, which may surround the second axis of rotation<b>227</b>Rotate to allow heating zone<b>801</b> 、<b>803</b> 、<b>805</b> 、<b>807</b> 、<b>809</b>Each of them travels along the conveying direction of the glass ribbon to separate the path<b>151</b>Continuous exposure to the individual laser beam spots of each laser beam.

In some embodiments, a second reflector may be provided<b>205d</b> 、<b>1401</b>, Without the first reflector<b>215</b>. In such embodiments, at least one laser beam generator may be designed to generate a single laser beam spot that extends along the entire width of the glass ribbon or is larger than the entire width of the glass ribbon. Alternatively, at least one laser beam generator may generate a plurality of laser beam spots (for example, optionally partially overlapping each other), and together extend along the entire width of the glass ribbon or greater than the entire width of the glass ribbon. In such embodiments, since a stationary single elongated laser beam spot or a plurality of stationary laser beam spots span the entire width of the separation path, there is no need for a single laser beam spot traveling along the separation path. In such embodiments, a second reflector can be provided<b>205d</b> 、<b>1401</b>, To allow a single laser beam spot or multiple laser beam spots along with the glass ribbon along the conveying direction of the glass ribbon<b>901</b>(For example, in the stretching direction), even if the glass ribbon moves along the conveying direction<b>901</b>Move, can also continuously heat the separation path<b>151</b> 。

The glass ribbon will now be described<b>103</b>With glass plate<b>104</b>Method of separation. The method includes the following steps: moving the glass ribbon in the length direction of the glass ribbon<b>103</b>. In some embodiments, the glass ribbon<b>103</b>It can be moved (eg unwound) from a previously produced spool of glass ribbon, where the unwound portion of the glass ribbon travels along the length of the glass ribbon. In this embodiment, the reel of the glass ribbon can be unwound, wherein the glass plate can be separated from the glass ribbon without interrupting the process of unwinding the glass ribbon from the reel of the glass ribbon. In addition, the glass ribbon<b>103</b>The illustrated embodiment is shown in the conveying direction<b>901</b>(For example, the stretching direction) (for example, the direction of gravity), where the stretching direction is the same direction as the length direction of the glass ribbon and the conveying direction of the glass ribbon. In alternative embodiments, the glass ribbon can be moved using an angle or even in a direction perpendicular to gravity. In fact, during the transportation and/or processing of the glass ribbon, the glass ribbon<b>103</b>It can travel horizontally along the length of the glass ribbon, for example on an air bar. In such embodiments, as the glass ribbon travels in the transverse (for example, horizontal) conveying direction, the glass sheet<b>104</b>Can be with glass ribbon<b>103</b>Separate.

The method may further include removing the glass ribbon<b>103</b>Separation path<b>151</b>Exposure to at least one laser beam spot<b>209</b>To follow the separation path<b>151</b>Generate thermal stress without damaging the glass ribbon<b>103</b>. Separation path<b>151</b>Is regarded as the first major surface where the separation will occur<b>213</b>The upper path, for example, by responding to the establishment of defects discussed more fully below, the complete body crack spontaneously formed along the separation path through the entire thickness of the glass ribbon from the first major surface of the glass ribbon to the glass ribbon The second major surface. Separation path<b>151</b>Can be in the width of the glass ribbon "<b>W</b>"Extends in the direction. For example, the separation path can optionally be perpendicular to the length "<b>L1</b>", which makes the separation path<b>151</b>The composite direction vector of and the width of the glass ribbon "<b>W</b>"The composite direction vector is the same. In this embodiment, the separation may cause the glass ribbon to include a separation edge extending along the separation path, the separation path being perpendicular to the glass ribbon<b>103</b>Outer edge<b>153</b> 、<b>155</b>(That is, the outer edge<b>153</b> 、<b>155</b>Parallel to each other). Alternatively, the separation path may be at a position other than perpendicular to the length<b>「</b><b>L1</b>"Angle, where the separation path<b>151</b>The composite direction vector of and the width of the glass ribbon "<b>W</b>The composite direction vectors of "are not the same. In this embodiment, the separation may cause the glass ribbon to include a separation edge extending along the separation path, the separation path and the outer edge<b>153</b> 、<b>155</b>One of (ie, parallel outer edges<b>153</b> 、<b>155</b>) At an acute angle, and parallel to the outer edge<b>153</b> 、<b>155</b>The other is an obtuse angle.

As shown in the figure and discussed above, the method may include the following steps: making at least one laser beam<b>203</b>In the glass ribbon<b>103</b>Main surface (e.g. first main surface<b>213</b>) On the corresponding laser beam spot<b>209</b>Intersect at each other. The method can include the following steps:<b>103</b>The width of "<b>W</b>"'S direction<b>225</b>Up along the separation path<b>151</b>Repeatedly pass the laser beam spot<b>209</b>To follow the separation path<b>151</b>Generate thermal stress. In some embodiments, the laser beam spot<b>209</b>Available from the glass ribbon<b>103</b>The first outer edge<b>153</b>Towards the second outer edge<b>155</b>Along a single direction (for example, in the direction<b>225</b>On) travel without following the glass strip<b>103</b>Second outer edge<b>155</b>Towards the first outer edge<b>153</b>In the opposite direction.

The exemplary method may include the following steps: combining at least one laser beam<b>203</b>Reflected away around the first axis of rotation<b>218</b>Rotating first reflector<b>215</b>The first reflective surface<b>219</b>To cause laser beam spots<b>209</b>In the glass ribbon<b>103</b>The width of "<b>W</b>"'S direction<b>225</b>Up along the separation path<b>151</b>Repeatedly pass. As mentioned above, the first reflector<b>215</b>Can contain polygonal reflector, polygonal reflector rotates to cause laser beam spot<b>209</b>In a single direction<b>225</b>Move on.

The method of the present disclosure may further include the following steps: in the conveying direction<b>901</b>(E.g. stretch direction, glass ribbon<b>103</b>length"<b>L1</b>"Direction, etc.) to move the laser beam so that the laser beam<b>103</b>March together. So, when the glass ribbon<b>103</b>In the conveying direction<b>901</b>When moving up, separate the path<b>151</b>Continue to expose the laser beam to continue along the separation path<b>151</b>Generate thermal stress.

The laser beam is in the conveying direction<b>901</b>The above-mentioned movement can be performed in any of the above-mentioned embodiments, wherein along the glass ribbon<b>103</b>The entire width of "<b>W</b>"Heated glass ribbon<b>103</b>. For example, in an embodiment in which the laser beam generator provides a single stationary laser beam or a plurality of stationary and overlapping laser beams (and their respective laser beam spots), such a laser beam can be provided move. In a further embodiment, the laser beam is in the delivery direction<b>901</b>The above movement can include also making the laser beam spot<b>209</b>Or multiple laser beam spots (see Figure 8) along the separation path<b>151</b>Example of repeated steps passed. In such embodiments, the method includes the following steps: along the conveying direction<b>901</b>Move the laser beam spot, and make the laser beam spot<b>209</b>With glass ribbon<b>103</b>Move together, while laser beam spot<b>209</b>Continue on the glass ribbon<b>103</b>The width of "<b>W</b>Along the separation path<b>151</b>Repeat the pass to continue along the separation path<b>151</b>Generate thermal stress.

like<b>NS</b><b>9-13</b>Figure and<b>NS</b><b>14-18</b><b>picture</b>As shown in the embodiment, the method may include combining at least one laser beam<b>203</b>Reflection off the rotating reflective surface<b>206</b> 、<b>1402</b>, In order to cause the laser beam in the conveying direction<b>901</b>(For example, the stretching direction) moves upwards, so that the laser beam travels together with the glass ribbon. In this way, even when separating the path<b>151</b>In the direction<b>901</b>When moving up,<b>NS</b><b>9-13</b><b>picture</b>and<b>NS</b><b>14-18</b><b>picture</b>Each embodiment of also follows the separation path<b>151</b>Generate thermal stress.

As an illustration, the discussion will be discussed by<b>NS</b><b>9-13</b><b>picture</b>The device shown in along the separation path<b>151</b>Examples of thermal stress. First refer to<b>NS</b><b>9</b><b>picture</b>, By the laser beam generator<b>201</b>Laser beam<b>203</b>Can pass through one or more optical lenses<b>207</b>, To produce the laser beam spot with the desired shape. Subsequently, the laser beam<b>203</b>The reflection away is located relative to the second axis of rotation<b>227</b>The first reflective surface of the first rotational position<b>219</b>Before, the reflection leaves the second reflective surface<b>206</b>. When<b>NS</b><b>9</b><b>picture</b>In the first rotational position shown, the second reflective surface<b>206</b>Reflected laser beam<b>203</b>, And in the first position<b>905a</b>First reflective surface<b>219</b>intersect. Then, depending on the first axis of rotation as described above<b>218</b>The first reflector<b>215</b>The rotation position of the laser beam from the first position<b>905a</b>Reflect off the first reflective surface<b>219</b>, With the separation path at a lateral position on the separation path<b>151</b>intersect. In fact, when using the polygonal reflector shown as the first reflector<b>215</b>When the polygonal reflector surrounds the first axis of rotation<b>218</b>Counterclockwise<b>217</b>The rotation will cause laser beam spots on the glass ribbon<b>103</b>The first outer edge part<b>211a</b>Towards the second outer edge part<b>211b</b>The direction of<b>225</b>Up along the separation path<b>151</b>March. As discussed further above, the step of repeatedly passing the laser beam spot may optionally include the following steps: in a single direction (for example, direction<b>225</b>) To repeatedly pass the laser beam spot. Repeatedly passing the laser beam spot in a single direction can help to quickly remove the glass plate when defects are established on the separation path.<b>104</b>With glass ribbon<b>103</b>Separation, which will be discussed more fully below.

Second reflective surface<b>206</b>Can surround the second axis of rotation<b>227</b>Rotate (for example, continuous rotation) at a rotation rate (for example, a constant rotation rate) so as to leave the first reflecting surface<b>219</b>The reflection position travels parallel to the first axis of rotation<b>218</b>The direction of<b>907</b>(For example, the direction shown). In the direction<b>907</b>Moving the reflection position up can help the laser beam spot<b>209</b>In the conveying direction<b>901</b>Follow the glass ribbon to allow the separation path in the conveying direction<b>901</b>Up and laterally (for example, perpendicular) to the conveying direction<b>901</b>The direction of<b>225</b>When moving upward, the laser beam spot and separation path<b>151</b>Continuously intersect.

Second reflective surface<b>206</b>Can be rotated from the first position (e.g.<b>NS</b><b>9</b><b>picture</b>Shown) around the second axis of rotation<b>227</b>Along the direction<b>903</b>Rotate to the second rotation position (e.g.<b>NS</b><b>10</b><b>picture</b>Shown). When<b>NS</b><b>10</b><b>picture</b>In the second rotational position shown, the second reflective surface<b>206</b>Reflected laser beam<b>203</b>, And in the first position<b>905a</b>Second position downstream<b>905b</b>First reflective surface<b>219</b>intersect. Subsequently, the laser beam from the second position<b>905b</b>Reflect off the first reflective surface<b>219</b>To spot the laser beam<b>209</b>And separation path<b>151</b>Intersect, and compared to<b>NS</b><b>9</b><b>picture</b>Separation path shown<b>151</b>The location of the separation path<b>151</b>Along the direction<b>901</b>Move downstream.

Second reflective surface<b>206</b>Can still be further moved from the second rotational position (such as<b>NS</b><b>10</b><b>picture</b>Shown) around the second axis of rotation<b>227</b>Along the direction<b>903</b>Rotate to the third rotation position (e.g.<b>NS</b><b>11</b><b>picture</b>Shown). When<b>NS</b><b>11</b><b>picture</b>In the third rotational position shown, the second reflective surface<b>206</b>Reflected laser beam<b>203</b>, And in the second position<b>905b</b>Third position downstream<b>905c</b>First reflective surface<b>219</b>intersect. Subsequently, the laser beam from the third position<b>905c</b>Reflect off the first reflective surface<b>219</b>To spot the laser beam<b>209</b>And separation path<b>151</b>Intersect, and compared to<b>NS</b><b>10</b><b>picture</b>Separation path shown<b>151</b>The location of the separation path<b>151</b>Along the direction<b>901</b>Move downstream.

It should be understood that although<b>NS</b><b>9-11</b><b>picture</b>Illustration of the second reflective surface<b>206</b>Increased movement and separation paths<b>151</b>Increased position, but the second reflective surface<b>206</b>Can move around the second axis of rotation<b>1403</b>Continuous rotation, and as the separation path moves along the length of the glass ribbon, causing laser beam spots<b>209</b>And separation path<b>151</b>Continuously intersect.

Will discuss by<b>NS</b><b>14-18</b><b>picture</b>The device shown in along the separation path<b>151</b>Examples of thermal stress. First refer to<b>NS</b><b>14</b><b>picture</b>, By the laser beam generator<b>201</b>Laser beam<b>203</b>Can pass through one or more optical lenses<b>207</b>, To produce the laser beam spot with the desired shape. Subsequently, the laser beam<b>203</b>Optionally from one or more stationary reflectors<b>1406</b>Reflect away to be in contact with the second reflective surface<b>1402</b>Before intersecting with the first reflective surface<b>219</b>intersect. In one embodiment, the laser beam<b>203</b>In position<b>1409</b>First reflective surface<b>219</b>intersect. Subsequently, the laser beam can optionally be positioned relative to the second axis of rotation<b>1403</b>Reflects away from the second reflector at the first rotational position<b>1401</b>Second reflective surface<b>1402</b>Before, the reflection leaves one or more additional reflectors<b>1407</b>. Depends on the first axis of rotation as described above<b>218</b>The first reflector<b>215</b>The rotation position when in<b>NS</b><b>14</b><b>picture</b>In the first rotational position shown, the second reflective surface<b>1402</b>Reflected laser beam<b>203</b>, To spot the laser beam at a lateral position on the separation path<b>209</b>And separation path<b>151</b>intersect. In fact, when using the polygonal reflector shown as the first reflector<b>215</b>When the polygonal reflector surrounds the first axis of rotation<b>218</b>Counterclockwise<b>217</b>Rotation will cause laser beam spots<b>209</b>In the glass ribbon<b>103</b>The first outer edge part<b>211a</b>Towards the second outer edge part<b>211b</b>The direction of<b>255</b>Up along the separation path<b>151</b>March. As discussed further above, the step of repeatedly passing the laser beam spot may optionally include the following steps: in a single direction (for example, direction<b>225</b>) To repeatedly pass the laser beam spot.

When the separation path is along the length of the glass ribbon<b>901</b>With the width of the glass ribbon<b>225</b>When moving, the second reflective surface<b>1402</b>Can surround the second axis of rotation<b>1403</b>Rotate (for example, continuous rotation) at a rotation rate (for example, a constant rotation rate or an adjusted rotation rate) to allow laser beam spots and separate paths<b>151</b>Continuously intersect.

Second reflective surface<b>1402</b>Can surround the second rotation axis from the first rotation position (as shown in Figure 14)<b>1403</b>Along the direction<b>1405</b>Rotate to the second rotation position (e.g.<b>NS</b><b>15</b><b>picture</b>Shown). When in<b>NS</b><b>15</b><b>picture</b>In the second rotational position shown, the second reflective surface<b>1402</b>Reflected laser beam<b>203</b>To separate the path<b>151</b>Intersect, and compared to<b>NS</b><b>14</b><b>picture</b>Separation path shown<b>151</b>The location of the separation path<b>151</b>Along the direction<b>901</b>Move downstream.

Second reflective surface<b>1402</b>Can still be further moved from the second rotational position (such as<b>NS</b><b>15</b><b>picture</b>Shown) around the second axis of rotation<b>1403</b>Along the direction<b>1405</b>Rotate to the third rotation position (e.g.<b>NS</b><b>16</b><b>picture</b>Shown). When in<b>NS</b><b>16</b><b>picture</b>In the third rotational position shown, the second reflective surface<b>1402</b>Reflected laser beam<b>203</b>To spot the laser beam<b>209</b>And separation path<b>151</b>Intersect, and compared to<b>NS</b><b>15</b><b>picture</b>Separation path shown<b>151</b>The location of the separation path<b>151</b>Along the direction<b>901</b>Move downstream.

It should be understood that although<b>NS</b><b>14-16</b><b>picture</b>Illustration of the second reflective surface<b>1402</b>Increased movement and separation paths<b>151</b>Increased position, but the second reflective surface<b>1402</b>Can move around the second axis of rotation<b>1403</b>Continuous rotation, and as the separation path moves along the length of the glass ribbon, the laser beam spot and the separation path are caused<b>151</b>Continuously intersect.

In any embodiment of the present disclosure, the second reflective surface<b>206</b> 、<b>1402</b>The rotation can be with the glass ribbon in the conveying direction<b>901</b>The speed of the upper (for example, in the stretching direction) is coordinated, and as the separation path moves along the conveying direction, the laser beam spot and the separation path<b>151</b>Continuously intersect. For example, the second reflective surface<b>206</b> 、<b>1402</b>It can be rotated manually around the second rotation axis. In a further embodiment, an actuator (not shown) may be used to rotate the second reflective surface at a continuous predetermined rotation speed<b>206</b> 、<b>1402</b>To follow the separation path<b>151</b>Moving in the length direction and the laser beam spot along the direction<b>225</b>Move, causing the laser beam spot and separation path<b>151</b>Continuously intersect. In addition, the actuator may optionally be operated by a controller configured to obtain feedback from the sensor, which senses the length of the glass ribbon (for example, the downward stretch direction).<b>901</b>) On the speed, and in the calculation of the second reflecting surface<b>206</b> 、<b>1402</b>Around the second axis of rotation<b>227</b> 、<b>1403</b>Enter the speed of the glass ribbon in the algorithm of the target rotation rate. Subsequently, the controller can operate the actuator to move the second reflective surface<b>206</b> 、<b>1402</b>Rotate at the target rotation rate to cause the laser beam spots to continuously contact the separation path<b>151</b>. In still further embodiments, a sensor (for example, a thermal or optical sensor) may be used to determine where the laser beam spot intersects the corresponding major surface of the glass ribbon. The controller can compare this position with the position of the separation path, and operate the actuator to accelerate, decelerate, or maintain the second reflective surface<b>206</b> 、<b>1402</b>Around the second axis of rotation<b>227</b> 、<b>1403</b>The current rotation rate of the laser beam spot continuously intersects the corresponding major surface of the glass ribbon.

Any of the above-mentioned methods of the present disclosure may further include the following step: when the separation path is under thermal stress generated during the above-mentioned processing, the separation path<b>151</b>Build defect<b>703</b>, And then responded to the defect<b>703</b>,glass plate<b>104</b>Along the separation path<b>151</b>From the glass ribbon<b>103</b>Separated spontaneously. In fact, like<b>NS</b><b>12</b><b>picture</b>and<b>NS</b><b>17</b><b>picture</b>As shown, the method may include the following steps: When the path is separated<b>151</b>On the path of separation<b>151</b>When the thermal stress generated by thermal energy is applied, as the separation path is in the length direction of the glass ribbon (for example, the stretching direction<b>901</b>) Go forward and use lasers (for example, UV lasers) to create defects<b>703</b>. Although the icon is used to create a defect<b>703</b>Laser, but further embodiments can use mechanical scribes (e.g.,<b>NS</b><b>1</b><b>picture</b>Scribe in question<b>701</b>), such as scoring wheels, diamond tips, or other defect generation techniques. like<b>NS</b><b>13</b><b>picture</b>and<b>NS</b><b>18</b><b>picture</b>Shown in response to the defect<b>703</b>,glass plate<b>104</b>Along the separation path<b>151</b>From the glass ribbon<b>103</b>Separated spontaneously.

As mentioned above, any exemplary method of the present disclosure may include the following steps: spotting the laser beam<b>209</b>In a single direction<b>225</b>On the outer edge part from the first<b>211a</b>Towards the second outer edge part<b>211b</b>Repeatedly pass. Although it is not necessary, passing the laser beam spot in a single direction can be beneficial to the glass plate<b>104</b>With glass ribbon<b>103</b>Quick separation. For example, such as<b>NS</b><b>12</b><b>picture</b>and<b>NS</b><b>17</b><b>picture</b>As shown, compared to the second outer edge<b>155</b>,defect<b>703</b>Can be built closer to the first outer edge<b>153</b>, So by being in a single direction<b>225</b>Moving laser beam spot<b>209</b>The resulting thermal stress distribution can help in a single direction<b>225</b>Spread on the body crack completely.

In any exemplary method of this disclosure, when the separation path<b>151</b>Exposure to the laser beam<b>203</b>To generate along the separation path<b>151</b>The thermal stress can build up defects<b>703</b>. Although defects can occur shortly after thermal stress is established<b>703</b>, But there is a defect<b>703</b>Use the laser beam along the separation path<b>151</b>Continue to generate or maintain thermal stress may allow in the separation path<b>151</b>Establish defects at maximum stress to promote the glass sheet<b>104</b>Separation.

In addition, in the heating separation path<b>151</b>After achieving a predetermined level of thermal stress along the separation path during the steps, defects can be established<b>703</b>. For example, in some embodiments, the thermal stress sufficient to separate the glass ribbon may be predetermined based on previous experience or calculation. In addition, it can be based on exposing the separated path to the laser beam<b>203</b>The predetermined time, the thermal stress is determined in advance. In addition, thermal stress can be determined in advance, and then defects can be established after achieving a predetermined level of stress. For example, thermal sensors (such as thermal cameras) or other sensing devices can monitor the separation path<b>151</b>temperature. Separation path<b>151</b>The achieved predetermined temperature may be an indication of the achieved predetermined stress. Therefore, once the predetermined temperature corresponding to the predetermined stress is achieved, the defect can be applied to the separation path after the predetermined level of stress is achieved<b>151</b> 。

although<b>NS</b><b>9-13</b><b>picture</b>and<b>NS</b><b>14-18</b><b>picture</b>The embodiment of illustrates a single laser beam, but further embodiments may include using a plurality of laser beams to generate thermal stress along separate paths. For example, refer to<b>NS</b><b>8</b><b>picture</b>The multiple laser beams discussed can be used<b>NS</b><b>9-13</b><b>picture</b>and<b>NS</b><b>14-18</b><b>picture</b>In the embodiment, to allow separation of glass ribbons with a relatively large total width. In such embodiments, each of the plurality of laser beam spots can be associated with the corresponding heating section<b>801</b> 、<b>803</b> 、<b>805</b> 、<b>807</b> 、<b>809</b>Intersect, when the separation path travels along the length of the glass ribbon, each laser beam follows the separation path<b>151</b>. Furthermore, in some embodiments, each section of the separation path may overlap with a portion of at least one adjacent section of the separation path (for example, see overlap area<b>811</b> 、<b>813</b> 、<b>815</b> 、<b>817</b>). This overlapping area allows to follow the entire separation path<b>151</b>Generate sufficient thermal stress.

Those with ordinary knowledge in this field should understand that various modifications and changes can be made to this article without departing from the spirit and scope of the present invention. Therefore, the present invention intends to cover the modifications and changes in this document, provided that they fall within the scope of the attached patent application and its equivalents.

<p>101Melt down drawing equipment</p><p>103glass ribbon</p><p>104Glass plate</p><p>105Melting vessel</p><p>107 batch of materials</p><p>109Storage Box</p><p>111Batch conveying device</p><p>113Motor</p><p>115controller</p><p>117Arrow</p><p>119Glass Frit Probe</p><p>121Glass Frit</p><p>123Standpipe</p><p>125Communication line</p><p>127Clarification container</p><p>129First connecting duct</p><p>131Glass Frit Mixing Vessel</p><p>133Conveying container</p><p>135Second connecting duct</p><p>137Third connection duct</p><p>139Downflow tube</p><p>141Entrance</p><p>143Forming a container</p><p>145root</p><p>147Forming a wedge</p><p>149Glass separation equipment</p><p>151Separation Path</p><p>153First outer edge</p><p>155Second outer edge</p><p>159Edge</p><p>161Central part</p><p>163Separation Path</p><p>165First Edge</p><p>167Second Edge</p><p>169Laser beam generator</p><p>171outer end</p><p>201Laser beam generator</p><p>203Laser beam</p><p>205aReflector</p><p>205bReflector</p><p>205cReflector</p><p>205dReflector</p><p>206Second reflective surface</p><p>207Optical lens</p><p>209Laser beam spot</p><p>211aFirst outer edge part</p><p>211bSecond outer edge part</p><p>213First major surface</p><p>215Polygonal reflector</p><p>217Counterclockwise</p><p>218The first rotation axis</p><p>219First reflective surface</p><p>219aReflective surface section</p><p>219bReflective surface section</p><p>219cReflective surface section</p><p>219dReflective surface section</p><p>219eReflective surface section</p><p>219fReflective surface section</p><p>219gReflective surface section</p><p>219hReflective surface section</p><p>221Upstream</p><p>221aFirst edge part</p><p>221bMiddle part</p><p>221cSecond edge part</p><p>225direction</p><p>225adirection</p><p>225bdirection</p><p>225cdirection</p><p>225ddirection</p><p>225edirection</p><p>227Second Rotation Axis</p><p>301Middle position</p><p>401Downstream</p><p>403First edge part</p><p>405First external position</p><p>407Second external position</p><p>501External location</p><p>503External location</p><p>507Sweep Path</p><p>509Sweep Path</p><p>601Oval power density area</p><p>701Scribe</p><p>703Defect</p><p>801Heating section</p><p>802Laser beam</p><p>803Heating section</p><p>804Laser beam</p><p>805Heating section</p><p>806Laser beam</p><p>807Heating section</p><p>808Laser beam</p><p>809Heating section</p><p>810Laser beam</p><p>811Overlapping area</p><p>813Overlapping area</p><p>815Overlapping area</p><p>817overlapping area</p><p>901Stretching direction</p><p>903direction</p><p>905aFirst position</p><p>905bSecond position</p><p>905cthird position</p><p>907direction</p><p>949Glass separation equipment</p><p>1401Second reflector</p><p>1402Second reflective surface</p><p>1403Second rotation axis</p><p>1405direction</p><p>1406Static reflector</p><p>1407Additional reflector</p><p>1409Location</p><p>1449Glass separation equipment</p>

When you read the following detailed description with reference to the accompanying drawings, you can better understand these and other features, aspects, and advantages of this article, among which:

<b>NS</b><b>1</b><b>picture</b>It is a schematic diagram of a fusion down-draw device configured to stretch a glass ribbon and an exemplary glass ribbon separation device;

<b>NS</b><b>2</b><b>picture</b>Ties along<b>NS</b><b>1</b><b>picture</b>A schematic cross-sectional view of an exemplary glass separation device of line 2-2 in which the laser beam exposes the upstream end of the path on the glass ribbon;

<b>NS</b><b>3</b><b>picture</b>The illustration shows the laser beam at the middle position of the path on the exposed glass belt;

<b>NS</b><b>4</b><b>picture</b>The figure shows the laser beam at the downstream end of the path on the exposed glass ribbon;

<b>NS</b><b>5</b><b>picture</b>The diagram shows the path on the glass ribbon positioned within the focal depth of the laser beam;

<b>NS</b><b>6</b><b>picture</b>Department as<b>NS</b><b>5</b><b>picture</b>A side view of the glass mesh, which illustrates the variable power density along the path of the glass ribbon;

<b>NS</b><b>7</b><b>picture</b>Glassy established on the path shown in step with defects in glass;

<b>NS</b><b>8</b><b>picture</b>Another embodiment is shown in which the path is exposed to a plurality of laser beams, each of which generates thermal stress along the corresponding section of the path;

<b>NS</b><b>9</b><b>picture</b>It is a perspective schematic diagram of the device that exposes the separation path on the glass ribbon at an upstream position;

<b>NS</b><b>10</b><b>picture</b>It is to expose the separation path in the middle position<b>NS</b><b>9</b><b>picture</b>Perspective schematic diagram of the equipment;

<b>NS</b><b>11</b><b>picture</b>It is to expose the separation path in the downstream position<b>NS</b><b>9</b><b>picture</b>Perspective schematic diagram of the equipment;

<b>NS</b><b>12</b><b>picture</b>Department as<b>NS</b><b>11</b><b>picture</b>A perspective schematic diagram of the device in which when the separation path is under thermal stress, defects are established on the separation path;

<b>NS</b><b>13</b><b>picture</b>Department as<b>NS</b><b>12</b><b>picture</b>A schematic perspective view of the device of, in which the glass ribbon spontaneously separates the glass plate from the glass ribbon along the separation path in response to the defect;

<b>NS</b><b>14</b><b>picture</b>It is a perspective schematic diagram of another device exposing the separation path on the glass ribbon at an upstream position;

<b>NS</b><b>15</b><b>picture</b>It is to expose the separation path in the middle position<b>NS</b><b>14</b><b>picture</b>Perspective schematic diagram of the equipment;

<b>NS</b><b>16</b><b>picture</b>It is to expose the separation path in the downstream position<b>NS</b><b>14</b><b>picture</b>Perspective schematic diagram of the equipment;

<b>NS</b><b>17</b><b>picture</b>Department as<b>NS</b><b>16</b><b>picture</b>A perspective schematic view of the device of, in which when the separation path is under thermal stress, defects are established on the separation path; and

<b>NS</b><b>18</b><b>picture</b>Department as<b>NS</b><b>17</b><b>picture</b>A schematic perspective view of the device in which the glass ribbon spontaneously separates the glass plate from the glass ribbon along the separation path in response to the defect.

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