JP2002177025A - Molding die for noble metal clay and ring molding die for precious metal clay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding die for a noble metal clay that does not deform a molding due to deformation of the die and helps cut burrs overhanging from a molding recess simultaneously with molding. SOLUTION: A strip molding recess 2 to fill a noble metal clay S is formed in a hard base member 1, profile erect walls 3 and 3 are erected at the opposite side edges of the strip molding recess 2, the upper ends of the profile erect walls are formed into pointed edges 30 and 30, and a scale 4 displaying the length of the strip molding recess by the number of a ring, taking into account of a shrinkage allowance of the noble metal clay.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold and a ring mold used for making accessories by hand using noble metal clay (pure silver clay, pure gold clay, platinum clay, etc.).

[0002]

2. Description of the Related Art Conventionally, when making accessories such as rings and pendant heads using precious metal clay, for example, the precious metal clay is extended into a plate shape, a rod shape or a lump shape, and then the contour is cut with a cutter knife or the like. In this procedure, a predetermined design is worked on, and then this is completed by sequentially performing a drying process, a firing process, and a finishing process.
In this case, a molding die may be mainly used as an item for beginners to simplify contour molding and surface design work. This mold has the advantage that contour forming and surface design can be easily performed simply by filling the molding recesses formed in the base member with precious metal clay.However, the conventional mold has silicon or rubber as the base member. Such a flexible material is used, and a molding recess is simply formed in the surface of the base member.

[0003]

When a molding die is used, the roller rod is rolled on the surface of the molding die with a large amount of precious metal clay in the molding recess, thereby forming the molding while elongating the precious metal clay. A method of filling the concave portion is generally used to simplify the work.

[0004] However, in the case where the molding recess is simply formed in the surface of the base member made of a flexible material as in the related art, when the roller rod is rolled, the molding die is deformed and the molded product is deformed. It may occur, and in particular, since the noble metal clay overflowing from the molding recesses protrudes as burrs on the surface of the molding die, it is necessary to remove the burrs in the post-processing after removing the molding from the molding recesses. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to prevent a molding die from being deformed and causing a molded product to lose its shape. An object of the present invention is to provide a noble metal clay mold and a noble metal clay ring mold that can be cut off simultaneously with molding.

[0006]

In order to solve the above-mentioned problems, a molding die for precious metal clay of the present invention (claim 1) is provided with a molding recess for filling a hard base member with precious metal clay. An outline standing wall is erected on the periphery of the recess, and the upper end of the outline standing wall is formed as a pointed edge.

Further, in the ring forming die for precious metal clay of the present invention (claim 2), a band-shaped concave portion for filling the hard base member with the noble metal clay is formed, and a contour standing wall is formed on the opposite side edge of the band-shaped concave portion. And the upper end of the contour standing wall is formed at a pointed edge. In this ring mold for noble metal clay, there is a mode in which a scale is provided which indicates the length of the band-shaped concave portion by the number of the ring in which the shrinkage allowance of the noble metal clay is calculated.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a ring mold for a noble metal clay according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view in the width direction showing a use state of the ring mold for a noble metal clay, and FIG.
FIG. 2 is a longitudinal sectional view showing a use state of the ring mold for precious metal clay. In addition, this ring mold for precious metal clay is
A mold for pure silver clay, which is made of pure silver powder (about 80% -90%), binder and water (about 20%-
Metallic clay mixed with 10%) is generally known from Mitsubishi Materials Corporation.

The ring forming die A for a noble metal clay has a band-shaped concave portion 2 in which a noble metal clay (pure silver clay S) is filled on the surface of a hard base member 1 made of an ABS resin having excellent releasability.
Are formed on the opposing side edges of the strip-shaped concave portion 2, and the upper ends of the contour standing walls 3, 3 are formed on the pointed edges 30, 30. At both ends of the strip-shaped concave portion 2, open portions 20 and 2 where the contour standing wall 3 is not formed are formed.
0, and a groove 21 is formed on the bottom surface of the band-shaped molded concave portion 2 to form a line-shaped projection as a surface design on the molded product. Scales 4 and 4 indicating the length of the band-shaped concave portion 2 are provided at both ends of the band-shaped concave portion 2 from the outer surface of the contour standing wall 3 to the surface of the hard base member 1.
This scale 4 shows that the number of rings, which takes into account the shrinkage allowance of the pure silver clay S due to firing, is 10, 15 from the inside.
No., No. 20, No. 25 and No. 30 are displayed in order.

An example of a procedure for forming a ring using the molding die A will be described. First, as shown in FIG.
Is rolled into a bar shape and placed in the band-shaped concave portion 2, and in this case, the amount of the pure silver clay S is set to be larger than the internal capacity of the band-shaped concave portion 2. Next, after the pure silver clay S is pushed to some extent inside the band-shaped concave portion 2 with a finger (the spreading by the finger is not always necessary), as shown in FIGS. 2, the pure silver clay S is filled into the strip-shaped concave portion 2 while being extended while the pure silver clay S is filled.
Is to flatten the surface.

In this case, on both sides of the band-shaped recess 2,
The pure silver clay S overflowing from the band-shaped concave portion 2 has the contour standing walls 3,3.
As shown in FIG. 2, the roller rod R and the hard base member 1
Since the space 5 is formed between the surface and the upper surface of the contour standing wall 3 and the pointed edge 30 is formed at the pointed edge 30, the protruding portion of the pure silver clay S can be pushed off by the roller rod R. Accordingly, burrs can be cut off at the same time as molding, and since the base member is the hard base member 1, the molding die is not deformed, and the shape of the molded product can be prevented from collapsing.

In addition, since the pure silver clay S protrudes from the open portions 20 and 20 at both ends of the band-shaped concave portion 2, the pure silver clay S can be smoothly extended by the roller rods R.
Contour standing walls 3 and 3 as much as they protrude from open portions 20 and 20
Can be reduced.

In this way, by filling the inside of the strip-shaped concave portion 2 with the pure silver clay S, the contour can be formed without burrs and the surface design (streak-shaped projections by the groove 21) can be performed. The molded article obtained can be molded. Further, by cutting both ends of the pure silver clay S filled in the inside of the band-shaped forming concave portion 2 to a predetermined size with the cutter C using the scale 4 as a guide, a molded product in which the shrinkage allowance of the pure silver clay S is calculated can be easily obtained. Can be molded into After the molding operation using the molding die A is completed, the molding die A
The molded product is removed from the mold, the both ends of the molded product are connected to form a ring, and then a drying process, a firing process, and a finishing process are sequentially performed, thereby completing the handmade of the pure silver ring.

Next, FIG. 4 is a perspective view of a mold for precious metal clay according to a second embodiment of the present invention. The molding die B for a noble metal clay is a molding die for a pendant head, in which a molding recess 7 for filling a hard base member 6 with a noble metal clay (pure silver clay) is formed. And the upper end of the contour standing wall 8 has a pointed edge 80.
Is formed. In this case, the contour standing wall 8 is
A circular concave portion 71 is formed on the bottom surface of the molded concave portion 7 so as to form a circular projection as a surface design on the molded product. The method of using the mold B for precious metal clay is described in the first embodiment described above.
This is the same as the embodiment, and the description is omitted.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration of the present invention is not limited thereto. For example, in addition to rings and pendant heads,
The accessory can be used for general accessories such as a broach, a decorative body for earrings and earrings, and a decorative body for a necklace. The contour and the surface design are of course arbitrary. Also, for the material of the base member, ABS
Not limited to the resin, other synthetic resins, metals such as stainless steel and aluminum, ceramics and the like can be used, but it is preferable to use a material having excellent mold release properties. Further, in the second embodiment, an example has been described in which the contour standing wall is erected over the entire periphery of the molding concave portion. However, an opening may be provided in a part of the contour standing wall, and In the first embodiment, the contour standing wall may be provided upright at both ends of the band-shaped concave portion, and the contour standing wall may be provided upright along the entire periphery of the peripheral edge of the band-shaped concave portion. In addition, the sharp edge formed at the upper end of the contour standing wall is sharpened sharply, and the sharp edge is crushed. It is formed. Further, it is preferable that the inner surface of the contour standing wall (the inner surface of the molding concave portion) is formed to have a draft at the time of demolding.

[0016]

As described above, in the molding die for precious metal clay (claim 1) of the present invention, since it is constituted as described above, the molding die is deformed and the molded product is not deformed. No burrs are formed, and burrs protruding from the molding recesses can be cut off at the same time as molding, so that even a beginner can easily mold accessories using noble metal clay.

Further, in the ring forming die for precious metal clay of the present invention (claim 2), since the ring is formed as described above, the ring can be formed easily, and the scale of the number of rings is provided. (Claim 3) A ring of a desired size can be made without considering a shrinkage allowance accompanying firing of the noble metal clay.

[Brief description of the drawings]

FIG. 1 is a perspective view of a ring forming die for precious metal clay according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view in the width direction showing a use state of the ring forming die for precious metal clay.

FIG. 3 is a longitudinal sectional view showing a use state of the ring forming die for precious metal clay.

FIG. 4 is a perspective view of a mold for precious metal clay according to a second embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List A Ring mold for precious metal clay S Pure silver clay 1 Hard base member 2 Band-shaped formed concave part 3 Contour wall 30 Pointed edge 4 Scale B Precious metal clay formed mold 6 Hard base member 7 Molded concave part 8 Contour standing wall 80 Pointed edge

Claims (3)

[Claims] 1. A forming recess for filling a noble metal clay into a hard base member, a contour standing wall is erected on a peripheral edge of the forming recess, and an upper end of the contour standing wall is formed as a pointed edge. Mold for precious metal clay. 2. A band-shaped concave portion for filling a precious metal clay into a hard base member, a contour standing wall is erected on the opposite side edge of the band-shaped concave portion, and an upper end of the contour standing wall is formed at a pointed edge. A ring molding die for precious metal clay characterized by having 3. The ring forming die for precious metal clay according to claim 2, wherein a scale is provided which indicates the length of the band-shaped concave portion by the number of the ring in which the shrinkage allowance of the precious metal clay is taken into account.