JPH0259876B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a decorative board and a method for manufacturing the same.
More specifically, the present invention relates to a decorative plate made of an electroformed shell and a method for manufacturing the same.

(Prior art) For example, decorative plates showing various designs such as animals, plants, patterns, etc. are used as decorative plates that are fitted and glued into the center of a decorative plate or the body of a vase. It is widely practiced to manufacture this decorative plate by electroforming.

(Problem to be Solved by the Invention) However, this electroformed decorative plate is made by carving grooves according to the design on a flat copper plate using a chisel or a chisel for engraving. used as
Since the product is obtained by electroforming,
As shown in FIG. 4, the surface of the decorative board 30 is a flat surface, and only the design is expressed by the grooved stripes 31, and even if the pattern portion divided by the grooved stripes 31 is colored or plated, etc. It was not possible to create a three-dimensional effect, its expressive power was poor, and it was insufficient for expressing beauty. Although FIG. 4 is a cross-sectional view, hatching is omitted to make the cross-sectional shape easier to understand.

The present invention solves the above-mentioned conventional problems, and provides a decorative plate made of an electroformed shell that has a convex surface and has a three-dimensional effect and is aesthetically pleasing, and a method for manufacturing the same.

(Means for Solving the Problems) However, in the decorative plate of the present invention, a convex portion corresponding to the pattern bulged toward the surface side is provided on the flat plate portion, and a concave portion corresponding to the detail of the pattern is provided on the surface of the convex portion. established,
It is a decorative board made of an electroformed shell, and the method for manufacturing the decorative board of the present invention is to electroform a master mold having a concave surface corresponding to a convex surface of the decorative board to form a male mold (positive mold).
After making fine recesses corresponding to the details of the design on the surface of this male mold using a cutter such as a chisel or chisel, a master mold is produced by electroforming based on this processed male mold. This is a method for manufacturing a decorative board, which is characterized by manufacturing the decorative board by electroforming using a matrix.

(Function) In the decorative plate of the present invention, the convex part connected to the flat plate part mainly expresses the design three-dimensionally, and the concave part formed on the surface of the convex part expresses the details of the design in detail. Completely different from decorative boards, it is three-dimensional, has shadows, and can express aesthetically pleasing designs. In addition, the filling material that has been filled into the recesses on the back side of the convex part of the decorative board is then glued and attached to the flat part of the decorative board on the body of a plate or vase, and then the convex part is pressed with your finger or the like. It acts as a reinforcing material to prevent the material from denting and deforming.

In addition, in the method for manufacturing a decorative board of this invention,
A male model having a convex surface whose height is sufficiently larger than the shell thickness of the electroformed shell that forms the decorative plate is created by manufacturing and using a master mold having a concave surface corresponding to the convex surface of the decorative plate by stamping or engraving. A mold is obtained, and by making a recess in the convex part of this male mold with a knife, it is possible to form a fine recess on the convex part, and using this processed male mold, the above-mentioned decorative plate with a rich aesthetic appearance can be made. Can be mass produced by casting.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Although FIGS. 2 and 3 are cross-sectional views, hatching is omitted so that the cross-sectional shapes can be easily understood.

FIGS. 1 and 2 show an example of a decorative board 1 of the present invention, which is entirely made of a single electroformed shell, and has portions corresponding to designs such as flowers 3 and birds 4 on a flat plate portion 2 forming the main board. bulges out to the surface side to form a convex portion 5,
The surface of the convex portion 5 is provided with a concave portion 6 in the form of a stripe showing the details of a pattern such as a stripe of a flower or leaf or a piece of a bird's feather. Reference numeral 7 denotes a filler that is filled into the recess 8 on the back side of the width-like convex part 5 and solidified. It is made of thermoplastic resin or various adhesives, and is used to reinforce the convex part 5, and the thickness of the electroformed shell is It is provided as necessary when the convex portion 5 is as thin as about 0.2 to 0.3 mm or when the width of the convex portion 5 is wide.

In order to manufacture this decorative board 1, as shown in FIG. 12. And this archetype 1
2 is subjected to mold release treatment, and a copper electroformed shell is formed by electroforming, and this is used as a male mold 13 (see b in the same figure). This male mold 13 has a convex portion 14 corresponding to the concave portion 11 .

Next, as shown in FIG. Set up At this time, it is preferable to use a chisel to round out each corner 16 of the convex surface part 14 to make the outline of the pattern more noticeable.

Next, electroforming is performed on the processed male mold 13 in the same manner as described above to obtain a female mold (negative mold) 17 shown in FIG. Then, a punching guide 19 for plate processing is recessed.

This female die 17 is electroformed again to obtain a male die 20 shown in FIG. The outer diameter of the obtained electroformed shell is punched out using a press, and predetermined areas are painted or colored plating, and the back of the convex portion 5 is coated as desired. The filler 7 is filled into the recess 6 and solidified to obtain the decorative board 1 shown in FIG.

The obtained decorative board 1 has a convex shape in the portions corresponding to the flowers 3, birds 4, etc., and a fine pattern is expressed by the concave portions 6 on the convex surface, so it has a three-dimensional effect and is aesthetically pleasing. This is an excellent decorative board.

The present invention is not limited to the above-mentioned embodiment. For example, in the above-mentioned embodiment, the concave portion 11 was formed on the copper plate 10 by chisel hammering to form a prototype, but instead of this, a thick plate such as a plastic plate could be carved. A concave surface portion 11 may be provided by inserting, and this may be used as a prototype. Further, in the above embodiment, the flat portion 18 and the convex portion 21
Female mold 17, male mold 2
0 was manufactured and used, but if this finishing work is required or unnecessary, the male mold 13 may be subjected to the necessary finishing work and used as the mother mold. Further, the concave portions 15 provided in the convex portions 14 may be provided only in some of the convex portions 14 depending on the design to be expressed, and the other convex portions 14 may be polished into curved or flat surfaces. Further, the filler 7 does not need to be used when the electroformed shell is thick or when the width of the convex portion 5 is narrow.

Furthermore, the present invention can be widely applied to decorative plates and decorative plates attached to music box cases and various other decorative items, as well as decorative plates and vases.

(Effects of the Invention) As explained above, according to the present invention, there is provided a decorative plate which has a convex surface portion corresponding to a pattern and a fine concave portion formed on the convex surface portion, and has a three-dimensional effect and is rich in aesthetic appearance, and this decorative plate. A manufacturing method is provided that enables efficient manufacturing of decorative plates using electroforming.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a decorative board showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a sectional view showing the manufacturing process of the decorative board shown in Fig. 1. (Second
FIG. 4 is a cross-sectional view (corresponding to FIG. 2) showing an example of a conventional decorative plate. 1... Decorative plate, 2... Flat plate part, 5... Convex part,
6... recess, 7... filling material, 8... recess, 11...
...concave part, 12... prototype, 13... male model, 14...
...Convex portion, 15...Concave portion, 17...Female type, 20...
...male type, 22...maternal type.

Claims (1)

[Scope of Claims] 1. A decorative plate made of an electroformed shell, in which a flat plate part is provided with a convex part corresponding to a pattern that bulges out to the front side, and a concave part corresponding to the details of the design is provided in the surface of the convex part. 2. The decorative board according to claim 1, wherein the recess formed on the back side of the convex portion is filled with a filler and solidified. 3 Electroforming is performed on a master mold having a concave surface corresponding to the convex surface of the decorative board to obtain a male mold, and after making fine recesses corresponding to the details of the design on the surface of this male mold with a knife, this processed A method for manufacturing a decorative board, comprising: manufacturing a matrix by electroforming based on a male mold, and manufacturing a decorative board by electroforming using this matrix. 4. The method for manufacturing a decorative plate according to claim 3, wherein a master model is manufactured by stamping a metal plate. 5. The method for manufacturing a decorative board according to claim 3, wherein a master model is produced by engraving a thick board material. 6. The method for manufacturing a decorative board according to claim 3, 4, or 5, in which the processed male mold is used as a mother mold as it is. 7. Claims 3, 4, or 5 in which a male mold obtained by electroforming the processed male mold a required number of times into a female mold and a male mold is used as the mother mold. The method for producing the described decorative board.