JPS6049440B2 - Method for manufacturing patterned metal plates or metal products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of producing a patterned metal product by adding an arbitrary pattern to the surface of a metal plate or metal product using plastic.

In more detail, the workpiece is punched out according to the decorative pattern,
The present invention relates to a method of manufacturing a patterned metal product by holding and fixing a transparent or colored plastic material in the punched portion. BACKGROUND ART Inlays, screw fields, etc. are well known as methods for forming patterns using other types of materials on the outer surface of metal plates and metal products.

These traditional crafts shape various materials into various shapes,
Patterns are formed by pasting or embedding them into workpiece materials, and recently, similar patterns and openwork patterns have been formed using plastic materials. However, these patterns are also made of plastic that has been shaped in advance and embedded or fitted into predetermined locations.
The principles of the manufacturing method are the same as those of the traditional crafts mentioned above, and since the manufacturing cost is extremely high compared to the material cost, there was a keen awareness of the need to review and improve the manufacturing method. In view of these points, the present inventor has already developed a method for manufacturing patterned metal plates or metal products by continuously press-fitting or fitting plastic into punched holes in a workpiece using a plastic plate. A patent application has been filed as No. 54-147900. The present invention has been carried out with the same purpose as the above-mentioned application, and is intended to increase the holding power of the plastic material and to ensure completeness as a product. The configuration of the present invention will be described below with reference to embodiment figures.

Reference numeral 1 denotes a metal plate (in this embodiment, the explanation will be given assuming that it is a metal plate of aluminum or aluminum alloy) as a workpiece.

First, the metal plate 1 is thoroughly chemically cleaned, and then non-corrosive layers 2 are formed on both surfaces. It is common practice to form an oxide film on the surface of aluminum or aluminum alloy by chemical methods and electrochemical methods to form a non-corrosive layer, and in this example, the oxide film was also formed by the same method. . The oxide film formed in this way has fairly good acid and alkali resistance, but since the film obtained by anodic oxidation is porous, the protective effect of the film will be lost if it is left in place. Not enough. Then, a sealing treatment (Se
allng) to form a complete protective film (Figure 1)
. After this process is completed, a desired pattern is punched out on the metal plate 1 using a press or chemicals to form punched holes 3 (second
figure). Next, when the metal plate 1 with the punched holes 3 is immersed in a weak alkaline solution, the base metal 1'' on the inner surface 3'' of the punched holes 3
is attacked by alkali and forms a concave surface 3″ (
Figure 4). Once a suitable concave surface 3'' has been formed, the metal plate 1 is lifted out of the weak alkaline solution, neutralized with acid, washed with water, and thoroughly dried.
A softened transparent or colored plastic plate 4 is pressed or poured using, for example, a roller 5 from the surface of the plastic plate 4, and the soft plastic 4'' is fully fitted into the punched hole 3 (Fig. 5). The plastic 4'' inserted into the metal plate 3 gradually hardens and is held and fixed within the eroded concave surface 3'' of the base metal 1'', forming a plastic pattern by the punched holes 3 on the surface of the metal plate 1, child. As a result, a patterned metal plate 1 is manufactured (FIG. 6). The concave surface 3'' of the base metal 1'' is not smooth but has fine irregularities due to being attacked by the alkali, so the softened plastic 4'' is fully inserted into this uneven surface, solidified and held firmly. However, just to be sure, before inserting the plastic 4'' into the punched hole 3, glue the metal and plastic materials to the surfaces that the plastic 4'' will contact, that is, the concave surface 3'' and the non-corrosive layer surface 1'' on the back side of the metal plate 1. An adhesive 6 may be applied to hold the plastic 4'' by the adhesive 6 and the concave surface 3'' (FIG. 8).

According to the method of the invention, a viscous soft plastic plate 4 is used to partially push the plastic 4'' into the details of the concave surface 3'' of the punched hole 3 due to its own viscosity or due to the applied pressure. Since it can be inserted without creating any gaps, no matter how minute or complex the pattern, it can be formed easily and at low cost.

In addition, the present invention provides that if a non-corrosive layer can be formed on the surface of the metal to be processed, a corroded concave surface is created by corroding only the middle layer of the base metal to be corroded using an acid, alkali, or a corrosive agent. Hold the plastic 4″ inside this corroded concave surface,
By being fixed, it can be applied to many metals and alloys.

For example, similar actions and effects can be obtained by applying the method of the present invention after surface treatment such as plating, or by coating or spraying an anticorrosive agent (Reslst) such as asphalt lacquer on the metal surface to form a non-corrosive layer. be. As described above, the present invention has the effect of easily forming a plastic pattern on a metal surface and exhibiting extremely good plastic retention performance.

In addition, by using the plastic 4'' as a colorless transparent material, colored transparent material, colored opaque material, etc., decorative patterns with various aesthetic effects such as transparent patterns and mosaic patterns can be formed on the metal plate 1 or the outer cover of the metal product. For example, as shown in Fig. 9, a predetermined pattern 8 is punched out on the outer surface of a metal cylindrical container 7, and a plastic 4'' is inserted in the same manner as described above.
It is also easy to hold it and form a plastic pattern. In the embodiment of the present invention, the roller 5 is used to fit the plastic 4' of the plastic plate 4, but the same effect can be easily achieved using air pressure, a flat plate press, etc. plastic 4
There is no particular limitation on the method of inserting the plastic 4''.In addition, the plastic 4'' may be held only by the concave surface 3'' of the punched hole 3, or the plastic 4'' may be held by both the punched hole 3 and the back surface of the non-corrosive layer or the back surface of the metal base. 4'' is simply a matter of design, and may be determined individually depending on the pattern, size of the product, etc.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view showing a state in which a non-corrosion layer is formed on a metal plate, Figure 2 is a front view of a punched pattern, and Figure 3 is a
A-line sectional view, Figure 4 is a sectional view showing a corroded state, and Figure 5 is a sectional view showing a corroded state.
The figure is an explanatory diagram with a cross-sectional view showing an example of plastic insertion,
Fig. 6 is a sectional view showing an embodiment in which plastic is held using the eroded concave surface and the non-corroded layer surface, Fig. 7 is a sectional view showing an embodiment in which the plastic is held only by the eroded concave surface, and Fig. 8 is A sectional view showing an embodiment in which an adhesive is applied to the eroded concave surface and a non-corroded layer surface to hold and fix the plastic via the adhesive. FIG. 9 shows an embodiment in which a pattern is formed on the outer surface of the cylindrical container. 10 is a cross-sectional view showing an embodiment in which the non-corroding layer is removed to retain and secure the plastic within the concave surface. 1...Metal plate, 2...Non-corrosion layer, 3.
...Punching hole, 3" ...Concave surface, 4...
・・・Plastic plate, 4″・・・Plastic,
5...Roller, 6...Adhesive, 7.
...Cylindrical container.

Claims (1)

[Scope of Claims] 1. Forming a non-corrosive layer on the surface of a metal plate or metal product to form three layers, punching out an arbitrary pattern on the three-layered metal plate or metal product, and then punching holes. The metal plate or metal product on which the metal plate or metal product has been formed is immersed in a corrosive liquid to corrode or erode the metal in the middle of the punched cross section as appropriate to form a recess on the inner surface of the punched hole, and then the metal plate with the recess formed therein. Alternatively, a softened plastic or plastic plate is crimped or poured onto a metal product, and by this crimping or pouring, the plastic is fitted (embossed) into a punched hole having a recess, and the fitted plastic is then punched out through the recess. A method of manufacturing metal plates or metal products with watermarks or patterns by holding them in-plane. 2. The manufacturing method according to claim 1, wherein an adhesive is applied to the recesses and/or the back surface of the non-corrosive layer, and the plastic is held on the recesses and/or the back surface of the non-corrosive layer via the adhesive. 3. The manufacturing method according to claim 1, wherein a recess is formed in the base metal on the inner surface of the punched hole, and then the non-corrosive layer is removed to hold the plastic in the recess. 4 After forming a recess in the base metal on the inner surface of the punched hole, remove the non-corrosive layer, apply an adhesive to the recess and/or the back surface of the metal, and apply the adhesive to the recess and/or the back surface of the metal. The manufacturing method according to claim 1, wherein the plastic is held in the plastic.