Sheet conveyer for a rotary press

The invention relates to a bog transport system, a propulsion device, a And a transport gripper system for a A rotary printing machine according to the preamble of claims 1, 2, 23, 24, 25, 26 and 27.

Bogent transport systems for rotary printing presses are known from the prior art Are known and are used, for example, in the feed area of ​​a printing machine for the Removing a sheet from the sheet stack and feeding it to a first sheet Printing unit. Furthermore, it is known to use sheet transport systems for transporting the Sheets within the printing machine from printing unit to printing unit or for transport To insert the sheet from the last printing unit to the delivery stack in the delivery area, Wherein the transport of the sheets in the different printing machine sections in the Rule by means of differently designed bog transport systems. So in the The feeder area is mechanically driven, essentially rectilinearly moved Suction devices in the form of lifting and towing suckers. Between Ie, within the printing press, the sheet transport is then carried out Usually by means of sheet transfer cylinders or drums, with drums arranged thereon Gripping means. In the cantilever area, the sheets are finally closed Gripper bridges, which are arranged on two circumferentially arranged, arranged parallel to one another Endless chains.

From German Offenlegungsschrift No. 25 01 963, it is also known to form the sheets with the aid of a A bog transport system in the form of a gripper carriage with an arrangement arranged thereon Gripper bridge through the entire printing machine. The drive of the In this case, the gripper carriage is provided by first and second propulsion elements, On both sides in the housing of the printing machine And which form the rotor of an electric linear motor. Along the two Guide rails extend endless stator coils,

Which produce an electromagnetic traveling field for propelling the gripper carriage. In this case, it can be provided that the coils are fed into a plurality of printing presses, Assigned electrically independent sub-sections are subdivided to the speed Of the gripper carriage, for example, when passing a pressure gap with a higher pressure Accuracy. A disadvantage of the described bog transport system Is that the stator coils are formed as endless coils, resulting in a high Electrical power requirements and a comparatively large control and regulation Regulatory burden and associated costs. That's the way it is In particular for obtaining a paste-containing supply of the sheets into the pressure gaps of the Each of the individual coils of the endless coil is passed through a single coil Separate control means to obtain the required accuracy.

The object of the invention is to provide a bog transport system for Rotary printing presses, which are universal in the individual partial sections Of a printing machine, the movement of which is identical to that of a printing machine Is carried out in a printing press, and the printing is carried out in addition to A reduced apparatus effort for controlling the advancement movement Has a comparatively low electrical power requirement

According to the invention, the object is achieved by the features of claims 1, 2, 23, 24, 25, 26 And 27.

According to a first embodiment of the invention, a bog transport system for A rotary printing machine having sheet holding means A bog conveyer, the propulsion of which is carried out in a first guide rail Guided first propulsion element as well as one in a substantially parallel to the first Guide rail Wherein the first and second propulsion elements are the rotors of a Electric linear drive and the first and second propulsion elements Each at least two articulated Interconnected individual members Magnetizable, preferably permanent-magnetic material. On the first and second guide rails, a plurality of the stator of the Linear drive units, the spacing of which is at least at least section-wise in the Is substantially less than or equal to the length of the propulsion elements, the Movement of the first and second propulsion elements by a drive Which is assigned to the drive stations, is controlled and regulated.

Instead of the individual elements made of magnetizable material, May be provided, the individual members of the link chains being closed by closed ones In which case the linear drive is known in this case Asynchronous drive.

According to a further embodiment of the invention, the propulsion elements By flexible strips of magnetizable material, preferably soft iron, Which have slots or other inhomogeneities. The drive of the In this embodiment of the invention, the driving element is produced according to the invention Known reluctance principle.

According to a preferred application of the invention, Bogent transport system is this between a parent and a Arranged downstream of a printing machine, the Sheet holding means are formed by gripping means having an arc of Gripping devices of the pre-arranged printing unit Gripper devices of the downstream printing unit.

Furthermore, the inventive sheet conveying system can be used in the same manner in the Region of the cantilever of a printing machine, the Sheet holding means are formed by gripping means having an arc of To a pre-arranged printing unit and place them on a stack. Here The control device controls the movement of the propulsion elements at Use of several sheet conveying devices in the area of ​​the sheet stack Preferably in such a way that the distances between two successive Are less than the length of a transported one Arc so as to form an imbricated formation of the deposited sheets.

According to a further preferred application of the invention, Bogent transport system is this in the area of ​​the investor of a printing machine , Wherein the sheet holding means of the sheet transporting device is constituted by Sucking means are provided, which transport the sheets to be transported from one Remove the sheet stack and feed it to a first printing unit of the printing machine. In this case, provision may be made for the control device to select the Speed ​​of the first and second propulsive elements during a revolution Of the bog transport device in such a way that the speed of the bog transport device is changed Arch conveying device for the suction and removal of an arc from Sheet stack is reduced and then increased to a predetermined value becomes.

According to a further embodiment of the invention, According to the invention, for a transport system on a Rotary printing press, at least one guide rail, and a guide rail Guide rail, which forms the rotor of an electric linear drive Propulsion element. Outside the guide rail are several electrical coils Comprising the stator of the electric motor Wherein the propulsion element is preferably formed by a drive motor Link chain, each of which is at least two hinged to each other Connected individual members of magnetizable material. The Drive stations are at least sectionally spaced apart Which is less than or equal to the length of the propulsion element A control device is associated with the drive stations, which controls the movement of the drive unit Drive element along the guide rails.

Instead of the individual elements made of magnetizable material, Embodiment of a propulsion element can also be provided, the individual members of the Link chains by closed conductor loops and to replace the linear drive in In this case as a known asynchronous drive.

In this embodiment, it can be provided in the same way that the Propulsion element by means of a flexible band, which is provided with slots, of magnetizable The linear drive being designed in this case according to the reluctance principle is working.

A propulsion device according to the invention, which comprises at least one Propulsion element and a guide rail as well as associated drive stations Is preferably used as a traction device or as a drive for a known device In a web-fed rotary printing machine.

In the same way, it is possible to use the propulsion device according to the invention as Transport gripper system, or as a drive for a known transport gripper system for Such as, for example, in further processing devices Such as binders, etc., are used for transporting the finished printing products.

According to a further embodiment of the invention, the distance between two Drive stations over one or more partial sections of the guide rails Greater than the length of the propulsion elements so that the movement of the propulsion elements in This partial section is essentially driven without drive alone by the movement energy of the Or the propulsion element.

Further features of the invention are contained in the subclaims.

The invention is described in more detail below with reference to the drawings, in which: FIG Respectively. In the drawings:<dl tsize="6"><dt>FIG</dt><dd>12 shows a schematic top view of a device according to the invention Bogent transport system with a gripper bridge, as for example Between the printing units or in the delivery area,</dd><dt>FIG</dt><dd>A schematic side view of the arch transport system of FIG. 1,</dd><dt>FIG</dt><dd>A schematic three-dimensional representation of another Embodiment of a Bogent transport system according to the invention with A gripping device in which the propulsion elements are connected by flexible belts Of magnetizable material,</dd><dt>FIG</dt><dd>A schematic side view of two printing units of a Sheet printing machine, between which a Bogentransport system with variety of circulating Bog conveyors and several railway paths, as well as the Characterized in that,</dd><dt>FIG</dt><dd>Which is arranged in the cantilever area of ​​a printing machine Bogier transport system with dryer equipment as well as a variety of Circulating bog conveyors,</dd><dt>FIG</dt><dd>5 shows a schematic representation of a device according to the invention Bogentransport system with suction devices, Feed region of a printing machine.</dd></dl>

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The inventive sheet transport system 1 shown in FIG. 1 for transport Of a sheet 2 in a printing machine 3 shown, for example, in FIG. 4, in particular A sheet-fed rotary printing machine, comprises a sheet transporting device 4, first And second substantially parallel to each other Guide rails 6a, 6b as well as at a distance D from one another along the Guide rails 8a, 6b.

The inventive sheet conveying device 4 of the sheet transport system 1 Furthermore has a first guide rail 6a guided in the first guide rail 6a Propulsion element 10a as well as a second guided in the second rail 6b Propulsion element 10b as well as the two propulsion elements 10a, 10b And which extends essentially over the width of the printing press, or of the printing press (Not shown) Sheet holding means 12 can be produced, for example, by means of a sheet-fed printing machine Usually used grippers 14, for example gripper grippers, which are mounted on a traverse 16 Are formed. In the same way, the holding means 12 can, however, Also by means of suckers or suction grippers fastened to the traverse 16, for example the suction devices shown in FIG FIG. 6, as can be seen, for example, in FIG Feeder area of ​​sheet-fed printing presses.

In the preferred embodiment of the invention, the first and the second, Second propulsion element by link chains shown in FIG. 1 with at least two, But preferably five or more individual members 22a, 22b. The Individual members 22a, 22b are made of magnetizable material and can be used as Permanent magnet with Poland N, S, eg from Samarium-Cobalt, Neodymeisenbor Or any other known permanent magnetic material with a post - Possibility of great energy density. Furthermore, it is possible to use the Individual members 22a, 22b are merely made of a ferromagnetic material, For example soft-iron, the linear drive being designed according to the state of the art Known reluctance principle.

The individual members 22a, 22b of the propulsion elements 10a, 10b are overlapping Joints 24a, 24b are movably connected to one another. The joints 24a, 24b For example as known ball-and-socket joints or as simple, two Successive individual members 22a, 22b, For example plastic or rubber bands. The Individual members 22a, 22b have a preferably circular cross-section Are guided without play in the first and second guide rail 6a, 6b. At Respectively one of the individual members 22a, 22b of the first and second Propulsion elements 10a, 10b, which is preferably arranged in the middle of the Propulsion elements 10a, 10b are opposed to each other Projections 20a, 20b to which the traverse 16 is attached. As shown in FIG , The traverse 16 is fastened to the projections 20a, 20b Advantageously by means of articulations 18a, 18b, so that by changing the Relative position of the first and second propulsion elements 10a, 10b Can be performed. The guide rails 6a, 6b have one of the cross-sectional shapes of the Individual members 22a, 22b, with the cross-sectional shapes, which are each arranged on one Of the individual members of each propulsion element 10a, 10b By means of a control element formed in the guide rails 6a, 6b and illustrated in FIG Longitudinal slot 26a, 26b. For better sliding guidance too The bodies of the individual members 22a, 22b as well as the inner surfaces of the individual members 22a, Guide rails 6a, 6b with a known sliding coating, for example with A Teflon coating.

The drive stations 8a, 8b are, as shown in FIG. 2, preferably paired Above and below the guide rails 6a, 6b Known electromagnetic coils 28, which are connected via a schematically illustrated The control and regulating device 30 is supplied with power Electromagnetic traveling field for propelling the bog transport device 4 Respectively. In other words, the drive stations 8a, 8b form the coils 28 The stator and the propulsion elements 10a, 10b with their individual members 22a, 22b Magnetisable material is the rotor of an electric linear motor or Linear drive. The drive stations 8a, 8b at the two Guide rails 6a, 6b can be designed in various ways be. Thus, the coils 28 of the drive stations 8a, 8b can control the associated Guide rail 6a, 6b, for example, on the side facing away from the slot 26a, 26b Side U-shaped or C-shaped. In the same way, it is conceivable that each of the Drive stations 8a, 8b as just above and below the Guide coils 6a, 6b; Or in the Drive stations 8a, 8b coils with known cross-flow or Transversal flow arrangement. The choice of coils depends on the type Of the linear drive used.

The number of individual members 22 of the first and second propulsion elements 10a, 10b Is in the embodiment of the invention illustrated in FIGS. 1 and 2 Preferably selected such that the length L of a propulsion element 10a, 10b in the Substantially the distance D between two drive stations 8a, 8b at one of the drive stations 8a, 8b Guide rails 6a, 6b, so that the driving elements 10a, Of the extent of the drive stations 8a, 8b are constantly in the range of action of the Hiking field. However, it can also be provided in the same way that the Distance D between two drive stations 8a, 8b of a guide rail 6a, 6b At least sectionally smaller than the length L of an assigned one Propulsion element 10a, 10b.

Furthermore, the distance D between two drive stations 8a, 8b can be adjusted at a Guide rail 6a, 6b should be at least section-wise larger than the length L Of a propulsion element 10a, 10b, so that the propulsion element 10a, 10b Completely outside the drive stations 8a, 8b and thus outside the drive station 8a, 8b Field of action of the electromagnetic traveling field. At this According to the invention, Between two drive stations 8a, 8b of the first and second drive stations 8a, 8b Second guide rails 6a, 6b by the movement energy The first and second propulsive elements 10a, 10b in one of the arranged Drive stations 8. For example, it can be advantageous to use the Drive stations 8 in the area between two printing units, in which an accurate Positioning of the transport device 4 is not required, at a distance of For example two to ten times the length L of one Propulsion element 10a, 10b. In this way, the number of the Drive stations 8 and thus the device complexity. In In which the transport device 4 is provided with a high precision and Accuracy must be moved, for example, in areas where a Pasted transfer of a printed sheet to a downstream printing unit , A plurality of drive stations 8 can be operated directly or in dense Spacing can be arranged one behind the other.

In a further embodiment of the invention shown in FIG May be provided, the propulsion elements 10a, 10b of those shown in FIG. 1 and FIG Embodiment as a continuous belt provided with slots 118 or Strips 110a, 110b of flexible, magnetizable material, eg soft-iron or A similar material with ferromagnetic properties. In In the same way as described above Chain-shaped embodiment of the invention, the Propulsion elements 110a, 110b can also be designed as permanent magnets or, Those containing, for example, samarium cobalt, neodymium boron or A further permanent magnet, preferably from the group of the Rare earths. The strips 110a, 110b can be used for improved Guide of the propulsion elements have additional guide bodies 120, which in FIG An associated guide 122 of the preferably flat-shaped Guide rail 6a, 6b. In the same way as the Link chains 10a, 10b of the embodiment 1 and 2 show the band-shaped propulsion elements 110a, 110b of the embodiment shown in FIG Illustrated embodiment of the invention in the preferred embodiment A length L substantially equal to the distance D between two Drive stations 8a, 8b on a guide rail 6a, 6b. The distance D But can also be smaller or section-wise larger than the one described above Length L.

Finally, in a further embodiment of the invention, Instead of the individual members made of magnetizable material Which are formed by closed conductor loops. In this case, the linear drive operates according to the known asynchronous principle.

In the preferred embodiment of the invention, as shown in FIGS. 1 to 3, Preferably sensors 32, 132 are arranged in front of the drive stations 8a, 8b Are connected to the control and regulating device 30 and which control the Speed ​​and / or the exact position of the first and second Propulsive elements 10a, 10b and 110a, 110b, respectively, within the corresponding Guide rails 6a, 6b. The control device 30 Controls and regulates the electromagnetic traveling field of the drive stations 8a, 8b Of the first and second guide rails 6a, 6b as a function of the position of the guide rails 6a, The speed and / or position detected by the sensors 32, 132, Transport device 4 performs a predetermined advancing movement.

Although the control and regulation device 30 is arranged opposite one another Driving stations 8a, 8b of the first and second guide rails 6a, 6b Can control and regulate in pairs, the control and regulation of the First drive stations 8a in the preferred embodiment of the invention Preferably independent of the control and regulation of the second Drive stations 8b. In other words, in the preferred embodiment, Embodiment of the invention, the first and second propulsion elements 10a, 10b Or 110a, 110b independently of one another and regulate, For example, the relative position of the first Propulsion element 10a, 110a with respect to the second propulsion element 10b, 110b And thus, for example, a bisector correction of the arc in FIG The following printing units. Furthermore it is with this Embodiment of the invention makes possible the speed of the first and second Propulsion elements 10a, 10b, 110a, 110b by the same amount Thereby, for example, a speed and position correction of the According to the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The sheet conveying device 4 shown in FIGS. 1 and 2 can, according to the invention, Different sections of a printing press can be used without it Based principle.

As shown in FIG. 4, it is, for example, possible to use the inventive method Bogent transport system between a predecessor and a subordinate Printing unit of a sheet-fed rotary printing machine, wherein the Guide rails 6a, 6b may be formed as closed endless rails can. Within the rails 6 a, Transport devices 4, which form a sheet 2 from a counter-pressure cylinder 50 Of the upstream printing unit and are connected to the gripping devices of a Counterpressure cylinder 52 of the downstream printing unit. In this case It can be provided that, above and below the guide rails 6a, 6b Drying devices 54, 56, for example in the form of known IR dryers Or hot-air dryers, are provided which cover the upper side and, if appropriate, Dry the underside of a printed sheet 2. According to another According to an embodiment of the invention, the speed, Of the sheet conveying devices 4 in the region of the drying devices 54, 56 Is reduced by the control and regulation device 30 in order to control the Through time through the drying means 54, 56, Drying time and thus the drying effect.

Furthermore, it can be provided that the first and second Guide rails 6a, 6b into two independent side-by-side Rail paths or path paths 58, 60, whereby the Speed ​​of the bog conveyor 4 in the region of the Drying devices 54, 56 can be reduced once again by a factor of two. The Railways 58, 60 preferably run horizontally and parallel to one another, Wherein the drying means 54, 56 are above and below each path Can be arranged, as shown in FIG. To the Transport means 4 alternately connect the upper rail path 60 and the upper rail path 60 Lower rail path 58 is, viewed in the conveying direction of the sheet, Rail paths 58, 60, a known switch 62 is arranged.

The switch 62 can, for example, be controlled by two additional drive stations 8 ' And 8 "formed at the beginning of the respective rail path 58, 60 And which are controlled by the control and regulation device 30 Corresponding to the path to be traversed, Whereby the leading end of the propulsion elements 10a, 10b, 110a, The force components acting thereon perpendicular to the advancing direction Of the electromagnetic field into one or the other Rail path 58, 60.

Furthermore, it can be provided that the inventive sheet transport system 1 In the region of a cantilever 70 of a known sheet-fed rotary printing machine , Or to form this as a cantilever, as shown in FIG. In this embodiment of the invention, which is essentially the same as that described in the 4, inserted between two printing units Embodiment of a bog transport system according to the invention, The printed sheets 2 are separated from the transport devices 4 from the last And on a stack of sheets 72 or one Shown in FIG. Advantageously, It can be provided that the control and regulating device 30 detects the distance Between two successive sheet conveying devices 4 in the region of the Stack 72 or conveyor belt is reduced in such a way that it is smaller than that Length of a sheet 2 so that the printed sheets 2 are formed as flake formation Can be stored. Thus, the deposition speed of the sheets in the Jib 70 can be further advantageously reduced. Through the storage of the Arcs as scaling formation results particularly in the further processing, For example during the winding-up of the printed products to form known coils Reduction of the device complexity. Furthermore, when using the According to the invention, in the cantilever 70 of a Can be advantageous if, in addition, one of FIGS , Which can be controlled via a pre - set point Region of the boom stack 72, which is designed in the same way as the embodiment shown in FIG Can be designed in the form of rail tracks 58 and 60 and which allows the removal of Sample sheet without additional mechanically complex test sheet removal devices Is possible.

A further possible use for a bog transport system 1 according to the invention Is to arrange it in a feeder 80 of a sheet-fed rotary printing machine. In this embodiment of the invention shown in FIG Guide rails 6a, 6b are preferably designed as endless guide rails, Above the sheet stack 82 to be printed. The holding means 12 can be designed as Known vacuum cleaners 84, which are, for example, shown in FIG Traverse 16 of the bogie transport device 4 and which are fixed by means of not shown Suction air feed devices with suction air. As shown in FIG. 6, Several sheet transporting devices 4 can be operated independently of one another within the Endless guide rails 6a, 6b Control means 30 controls and controls the driving stations 8a, 8b in such a manner that The speed of the sheet conveying devices 4 when the rear edge 86 is reached Of the sheet stack 82 is greatly reduced, preferably even to a standstill, so that When the suction cup 84 is extended or when the suction air supply is switched on, no or Almost no relative speed between the sheet 2 to be sucked and the Sucker 84. After the sheet 2 to be transported is sucked by the sucker 84 And from the stack 82, Transport device 4 until the transport device and the transport device 4 with it Transported sheets 2 required for a scaled abutment of the sheets Shed rate. The Acceleration of the transport device 4 according to the invention is preferably carried out Uniform and has a size such that the sheet 2 being transported is separated during separation Of the suction air supply in FIG. 6, the required imbrication speed is certainly certain Respectively. After separation of the suction air supply, The control device 30 controls the movement of the Preferably at a speed such that the speed thereof is increased first And then - just before reaching the rear edge 86 of the sheet stack 82 - Is lowered again in the manner described above.

In all of the above-described possible applications of an inventive method Bogentransportsystem 1 it is possible to carry out the Bogentransport exclusively by A single sheet transporting device 4. Advantageously, however, it is A larger number of sheet conveying devices 4 according to the invention are provided Within the guide rails 6a, 6b, resulting in a more uniform Movement thereof.

Although the inventive sheet transport system 1 has previously been constructed using the example of a Sheet-fed rotary printing machine 3, the same can also be used in the same manner In a known rotary rotary printing machine, for example as Insert the feed device. Here it is not absolutely necessary two To use opposite guide rails, but it is already Sufficient, merely a guide rail with a guide rail arranged therein Propulsion element along the rail feed path and the leading end Of the paper web to be fed, for example on the projection 20a, 20b. The Of the invention is not thereby abandoned.

Finally, it is conceivable to use the propulsion elements of the above-mentioned transport system For driving the transport grippers in known further processing systems for Such as Binderei- And folding machines. In this case, the transport grippers can be used to hold the For example, individually on the projections 20a, 20b of the Propulsion elements 10a, 10b; 110a, 110b, so that the movement Of each transport gripper by the control device 30 individually Control and regulation. Furthermore, it can be advantageous in this case, as in the case of the Previously described, a single one Guide rail 6a, 6b instead of two opposing ones Guide rails.

Reference list

<dl tsize="10" compact="compact"><dt>1</dt><dd>Bogent transport system</dd><dt>2</dt><dd>arc</dd><dt>3</dt><dd>printing machine</dd><dt>4</dt><dd>Bog transport device</dd><dt>6a</dt><dd>guide rail</dd><dt>6b</dt><dd>guide rail</dd><dt>8a</dt><dd>Drive station on guide rail 6a</dd><dt>8b</dt><dd>Drive station on guide rail 6b</dd><dt>8th'</dt><dd>Drive station before diverter in FIG. 4</dd><dt>8th"</dt><dd>Drive station before diverter in FIG. 4</dd><dt>10a</dt><dd>First propulsion element in guide rail 6a</dd><dt>10b</dt><dd>Second propulsion element in guide rail 6b</dd><dt>12</dt><dd>Sheet holding means</dd><dt>14</dt><dd>Clamp grippers</dd><dt>16</dt><dd>traverse</dd><dt>18a</dt><dd>joint</dd><dt>18b</dt><dd>joint</dd><dt>20a</dt><dd>head Start</dd><dt>20b</dt><dd>head Start</dd><dt>22a</dt><dd>Individual members of the link chain of the first propulsion element</dd><dt>22b</dt><dd>Individual members of the link chain of the second propulsion element</dd><dt>24a</dt><dd>joint</dd><dt>24b</dt><dd>joint</dd><dt>26a</dt><dd>Longitudinal slot in guide rail 6a</dd><dt>26b</dt><dd>Longitudinal slot in guide rail 6b</dd><dt>28</dt><dd>Do the washing up</dd><dt>30</dt><dd>Control and regulating device </dd><dt>32</dt><dd>sensors</dd><dt>50</dt><dd>Counterpressure cylinder of the upstream printing unit</dd><dt>52</dt><dd>Counterpressure cylinder of the downstream printing unit</dd><dt>54</dt><dd>Drying device</dd><dt>56</dt><dd>Drying device</dd><dt>58</dt><dd>first railway path</dd><dt>60</dt><dd>second railroad path</dd><dt>62</dt><dd>Soft</dd><dt>70</dt><dd>boom</dd><dt>72</dt><dd>Bow pile</dd><dt>80</dt><dd>investor</dd><dt>82</dt><dd>Bow pile</dd><dt>84</dt><dd>Mammal</dd><dt>86</dt><dd>The rear edge of the arch stack</dd><dt>110a, 110b</dt><dd>Propulsion elements of the embodiment of FIG</dd><dt>118</dt><dd>slots</dd><dt>120</dt><dd>Leadership</dd><dt>122</dt><dd>additional guidance</dd><dt>132</dt><dd>sensor</dd></dl><dl tsize="1" compact="compact"><dt>D</dt><dd>Distance between two drive stations</dd><dt>L</dt><dd>Length of a propulsion element</dd></dl>