Marking method and metal part

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to a marking method for attaching various indications such as a manufacturer name, a lot number, a model, and a product number to a suitable place of a metal part to be assembled to various devices, and a metal part using the marking method.

【0002】

[Conventional technology]

For example, as means for attaching various indications to the surface of a metal part to be assembled to an electric device, a means for attaching or screwing a name plate on which a desired indication is printed, or a means for printing the indication directly on the surface of the part. , Etc. are used.

【0003】

[Problems to be Solved by the Invention]

According to the means of using nameplates, it is necessary to prepare many types of nameplates as the number of types of parts increases, and the cost of manufacturing the nameplates is high. In addition, the installation process and the like become complicated, which contributes to an increase in cost. Further, also in the printing means, as the types of parts increase, many types of printing original plates are required, and the same problem occurs.

【0004】

The present invention focuses on the fact that a surface coating is applied to a metal part, a marking method capable of easily and easily applying a desired display at low cost without using a name plate or printing, and a metal product using the same. The purpose is to provide parts.

【0005】

[Means for solving problems]

In the present invention, in order to achieve the above object, it is configured as follows.

【0006】

That is, the marking method of the invention according to claim 1 is characterized in that the surface of a component to be treated made of a metal material is coated, and the coated surface is irradiated with laser light to form an engraving of a predetermined pattern. ..

【0007】

The marking method of the invention according to claim 2 is the method according to claim 1, wherein the coating material is removed over the entire thickness by laser light to expose the metal surface of the part to be treated in a predetermined pattern. It is a feature.

【0008】

In the marking method of the invention according to claim 3, in the method according to claim 2, the part is a molded product made of die-cast aluminum.

【0009】

The marking method of the invention according to claim 4 is the method according to claim 1, wherein a plurality of layers having different colors are coated on the surface of the component to be treated, and the coated surface is irradiated with a laser beam to coat the upper layer. It is characterized in that a predetermined pattern of engraving is formed on the material, and the lower coating material is exposed in the predetermined pattern.

【0010】

The metal part of the invention according to claim 5 is characterized in that a coating material applied to a metal surface is irradiated with a laser beam to form an engraving of a predetermined pattern to expose a metal background.

【0011】

[Action] According to the method of the invention according to claim 1, by irradiating a painted surface for protection or cosmetics applied to at least the outer surface of a metal part with laser light, a desired display is displayed on the painted surface. Can be carved and formed.

【0012】

According to the method of the invention according to claim 2, the engraving of the painted surface by irradiating the laser beam reaches the metal background, and the metal background is exposed in a desired display pattern.

【0013】

According to the method of the invention according to claim 3, the background color of the aluminum die-cast molded part is a grayish metallic color, and this background color is exposed in a desired display pattern.

【0014】

According to the method of the invention according to claim 4, the color tone of the entire display surface is the color tone of the upper layer coating material, the color tone of the display itself is the color tone of the lower layer coating material, and the color tone of the upper and lower layer coating materials is arbitrarily set. Therefore, it is possible to obtain a display of various shades.

【0015】

According to the metal part of the invention according to claim 5, the coating material applied to the metal surface is irradiated with laser light to form an engraving of a predetermined pattern to expose the metal background, thereby producing a desired display. It can be carved and formed.

【0016】

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

【0017】

FIG. 1 shows a limit switch A as an example of an electric device to be marked by the method of the present invention. This limit switch A has a built-in switching mechanism, and is configured by connecting a head case 3 equipped with an operation lever 4 with a roller to the upper part of the main body case 1 whose front surface is opened and closed by the cover 2. Case 1, cover 2, and head case 3 are each molded by aluminum die casting. Then, on the surface of the cover 2 as a metal part, various indications 5 such as a manufacturer name, a lot number, a model, and a product number are attached by the following means.

【0018】

The exposed outer surface of the cover 2 is coated to protect the metal surface and to improve the appearance, and the above-mentioned indication 5 is attached to the coated surface by a laser marking method.

【0019】

FIG. 2 shows a schematic configuration of a laser marker used in the present invention, in which laser light emitted from a laser emitter 6 using a carbon dioxide laser oscillator is focused by a condenser lens 7 and then paired. The coated surface of the component W (cover 2) to be processed is illuminated via the scanner 10 and the lens 11 in which the galvano mirrors 8 and 9 of the above are arranged orthogonally, and the galvano mirrors 8 and 9 of the scanner 10 are angle-controlled by the controller 12. By doing so, the irradiation spot is moved (scanned) in a plane, the painted surface of the component W to be processed is erased in a predetermined pattern, and the display 5 is engraved and formed. That is, a scanning method is adopted in which the laser light irradiation spot is scanned and controlled to engrave an arbitrary pattern.

【0020】

An input setting device 13 using a personal computer or the like is connected to the controller 12 that controls the scanner 10, and the cover 2, which is a component to be processed, is carried in and positioned at the marking processing position, and the processed cover 2 is carried out. The transport device 14 is connected, and various information to be marked can be arbitrarily input and set by the input setting device 13, and the component loading control to the marking processing position can be performed.

【0021】

As shown in FIG. 3, the depth of focus of the laser beam is set so as to engrave and erase the coating material 15 at its total thickness to expose the background of the component W to be processed, and the color of the coating material 15 is set. The difference between the surface color of the component W to be processed and the background color of the component W to be processed makes the display 5 clearly stand out.

【0022】

Although this embodiment has been described by applying it to a metal cover, it can be applied not only to the cover but also to a case and other metal parts.

【0023】

Further, the present invention can be implemented by transforming it into the following form.

【0024】

As shown in FIG. 4, the surface of the component W to be treated made of a metal material is coated with two layers of different colors, and only the coating material 15 of the outer layer is engraved with laser light to paint the inner layer. It is possible to form the display 5 in which the color of the material 16 is highlighted. According to this, by appropriately combining the color of the coating material 16 of the inner layer and the color of the coating material 15 of the outer layer, it is possible to make the display 5 stand out, or conversely to make it less noticeable, or to set a desired display form. it can.

【0025】

When two layers are painted, the depth of focus of the laser beam is adjusted to erase the outer layer coating material 15 and make the color of the inner layer coating material 16 stand out, and the outer layer and inner layer coating materials 15, 16 It is also possible to form a display that makes the metal background stand out by erasing together and forming a deep engraving, if the number of coating layers is 3 or more and the engraving depth is selected. Furthermore, it is possible to add various shades of display. In addition to the above-mentioned scanning method, a mask method or a mask scanning method can be adopted as a form in which the coating material is erased with a laser beam to form an engraving of a desired pattern.

【0026】

[Effect of the invention]

As is clear from the above description, according to the present invention, the following effects can be expected.

【0027】

According to the invention of claim 1, at least the outer surface of a metal part is coated for protection or cosmetics, and a desired indication is attached to the coated surface by laser marking. Therefore, a desired display can be easily and easily attached to the outer surface of the component at low cost without using a name plate or a printing original plate.

【0028】

According to the invention of claim 2, since the color of the metallic background can be given to the display, it is possible to form a display with a metallic sensation without using a special metal printing paint or the like, and it gives a feeling of design. An excellent display can be obtained.

【0029】

According to the invention of claim 3, since the part to be processed is an aluminum die-cast molded part, the grayish flesh color is compatible with the painted surface of any shade, and the paint shade is less restricted. Brings benefits.

【0030】

According to the invention of claim 4, since the color of the display can be arbitrarily set with respect to the color of the painted surface, the role of the display such as the display emphasizing the design feeling and the display emphasizing the explicit function can be used. It becomes easy to set arbitrarily, and it is effective in increasing the commercial value.

【0031】

According to the invention of claim 5, since the painted surface on the metal surface is marked with a desired label by laser marking, the desired label can be displayed on the outer surface of the component at low cost without using a name plate or a printing original plate. Can be easily and easily attached to.

[Simple explanation of drawings]

[Figure 1]

It is the whole perspective view of the limit switch which is an example of the electric device which gave the marking.

[Figure 2]

It is the schematic of the structure used for the laser marking method which concerns on this invention.

[Fig. 3]

It is an enlarged perspective view which cut out a part of the marking part.

[Fig. 4]

It is an enlarged perspective view which cut out a part of the marking part of another embodiment.

[Explanation of symbols]

5 display 8 Galvano Mirror 9 Galvano Mirror 12 controller 15 Painting material 16 Painting material W Parts to be processed