KR930009812B1 - Manufacturing method of multi-color medal - Google Patents

Abstract

The method for manufacturing multicolor medal is characterized by expressing colors on a plated layer (2) and a basic material (1) respectively by getting rid of the plated layer using a masking mold (3) and blasting equipment (5) after forming plated layers (2)(2') which have different colors from that of the basic material (1) at the whole surface of the basic material (1) being made of metal. The contact surface of masking mold with material has a shape corresponding to the external shape of the material.

Description

Manufacturing method of multicolored medal

1 is a process diagram of an embodiment of the present invention (a) is a cross-sectional view of a metal plate with a color different from the medal's color on the surface of the medal, and (b) is a masking type with masking types on the surface of the medal. (C) is a cross-sectional view of the state where the raw metal is exposed to the surface by removing the partial plating layer of the surface plating layer vaporizer by the method of the present invention.

Figure 2 is a process diagram of another embodiment of the present invention (a) is a cross-sectional view of the medal formed on the double plating layer by sequentially plating two metals having different colors on the surface of the medal, (b) is a surface of the medal The state of removing only the outermost surface plating layer by covering the masking dies and spraying the abrasive with a blasting machine, (c) is a state of removing both plating layers by putting the masque mold on the surface of the medal and spraying the abrasive with the blasting machine, (d) is sectional drawing which shows three colors expressed on the surface of medal.

* Explanation of symbols for main parts of the drawings

1: medal engraved medal 2: plating layer

2 ': secondary plating layer 3,3': masking mold

4: pliers 5: nozzle

6: abrasive

The present invention relates to a manufacturing method capable of efficiently producing high-quality multi-colored products of various colors by expressing the colors of metal crafts such as medals produced by press work in two colors, three colors, etc. according to product patterns.

Conventionally, a heterogeneous material bonding method for combining materials having different colors, a partial plating method for partially forming and manufacturing a plating layer having a different color from a material, a cloisonne inserting method, and a colored resin coating method have been generally used. Among these known methods, the method of joining dissimilar materials having different colors to each other is difficult to process the material, so the product has a concentric shape manufactured by combining a circular outer ring with a circular inner ring of different colors. It is only used in a limited way, so the form is not diverse and simple. Of course, the inner ring outer ring according to the product pattern can be punched out in the form of a pattern and combined with each other to produce a variety of products, but the production cost is expected to rise, such as to produce a precise punching mold. On the other hand, the partial plating method is to form the plating layer partially to express the color of the product as the material and the plating layer color, and it is more general than the dissimilar material bonding method, and the color of the product varies in two colors and three colors depending on the pattern. There is an advantage that can be expressed. However, this method has a disadvantage in that the work is difficult. In other words, the part to be plated and the part not to be plated on the surface of the product is divided into parts that cannot be plated, which involves the work of masking the work of precisely applying insulation and removing the tableed insulation after the plating is completed. The drawback is that it takes a lot of time and productivity decreases.

Similarly, cloisonne insertion method and colored resin application method can produce products with their own unique characteristics, but most of them need to be processed manually. It is extremely limited in its purpose.

The present invention is to provide a method that does not require the masking operation and insulation removal for plating, which is a drawback of the partial plating method while maintaining the product properties produced by the partial plating method. In other words, after forming a plating layer different from the material color on the surface of the press-molded product, cutting and removing a part of the masking mold manufactured by forming and duplicating the mold in the same way as the product pattern, covering it on the product surface and removing it from the hole of the removed masking mold. The thick layer of the part was precisely removed with a blasting machine to obtain the same effect as the partial plating. Therefore, since this method is a mechanical method using a masking mold and a blasting machine, it is a method of efficiently producing uniform quality.

[Example 1, 2-color medal manufacturing method]

A plated material (1) different in color from the base material (1) is formed to a thickness of about 5-10 microns on the entire surface of the medal base material (1) which is press-molded as shown in FIG. The masking mold 3 is tightly fixed to the pliers 4 and the abrasive 6 is sprayed at a high pressure from the nozzle 5 of the blasting machine (not shown), thereby removing unnecessary plating layers. As shown in the figure, the base material 1 and the plating layer 2 are made to appear on the surface.

The product is immersed in the coloring solution for a certain period of time, colored, then taken out and washed with water, and then colored and rubbed on the surface of the colored product with an abrasive and a soft brush. When the coloration work is completed, wash and dry, and if necessary, finish the process by applying lacquer etc.

The basic materials for manufacturing multicolored medals include copper and copper alloys, silver and silver alloys, gold and gold alloys, and the types of plating include copper plating, brass plating, cheongsong plating, nickel plating, silver plating and gold plating depending on the color of the selected material. It may be suitably used in accordance with. In addition, the masking mold can remove the plated layer precisely as a pattern by duplicating a sheet material having a thickness of about 1 mm with a mold for forming a product so as to match the shape of the product pattern with a mold for product molding.

Compressed air compression and powder type of abrasive required for blasting to remove the plating layer may be appropriately selected according to the type of material and the required roughness of the product surface.

[Example of 2, 3 color medal production method]

As shown in FIG. 2A, a primary plating layer 2 having a color different from that of the base material is formed to a thickness of about 10-20 microns on the entire surface of the press-formed base material 1, and then the base material 1 and the primary plating layer. A secondary plating layer 2 'having a different color from (2) is formed to a thickness of about 5-10 microns. When the plating operation is completed, as shown in FIG. 2B, the masking mold 4 is fixed on the double-plated product by the pliers 6 and the abrasive 8 is sprayed by the nozzle 7 to coat the primary plating layer 2. After removing the secondary plating layer 2 ', leaving only the silver, and then changing to a masking template 5 having a different shape from the masking template 4 as shown in FIG. 2B, the abrasive 8 is fixed and closely adhered to the nozzle 7 again. Spraying removes both the primary and secondary plating layers to produce a product surface consisting of the material 1, the primary plating layer 2, and the secondary plating layer 2 ', as shown in FIG. 2d. Afterwards, the work is finished in the same manner as described in the two-color medal manufacturing method embodiment.

In order to complete the product in the above manner, the present invention has the following advantages.

First, it is possible to produce a product of the same quality as the product manufactured by the partial plating method while mechanical work using a masking mold and a blasting machine.

Second, because of the mechanical work using the masking mold and blasting machine can efficiently produce a large amount of uniform quality products.

Third, since the masking mold is molded and duplicated using a mold for product molding, a separate mold for manufacturing the masking mold is unnecessary, and a large amount can be processed with one masking mold, which is very economical.

Fourth, even if one type of pattern is appropriately selected and harmonized with the type of material, the type of plating, the masking template design, etc., one or both sides of the product can be expressed in two or three colors to produce multicolor products of various colors.

Fifth, the plating work, blasting work, coloring work, coloring work, coding work, etc. of the manufacturing method of the product is a generalized work commonly used in manufacturing the crafts such as medals, so that existing facilities and technologies can be used as they are.

Claims (3)

After forming a plating layer having a different color from the base material on the entire surface of the base material made of metal, and using a masking mold and a blasting machine to remove the unnecessary part of the plating layer to express the color of the product in the color of the plating layer and the grass material The manufacturing method of the multicolored medallion characterized by the above-mentioned. The method of claim 1, wherein the plating layer having a different color of the base material is a plurality of layers, and the color of each plating layer and the base material is expressed by removing some or all of the plurality of plating layers. The method of manufacturing a multicolored medal according to claim 1 or 2, wherein the masking-type material contact surface is formed in a shape corresponding to the outer surface shape of the material.