JP2000050924A - Structure of hollow product made of noble metal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve appearance, to reduce the cost and to use the subject product by forming a hollow substrate, which is obtained by integrally joining the butting parts of plural noble metallic substrates to fill with air, and then pressurize-deforming the outer surface of the hollow substrate through the use of a press jig to specially form the outer surface. SOLUTION: In this first process, a platinum plate 1 of about 0.2 mm thickness is press-worked to form a semispherical substrate 2 of about 10 mm diameter. In a second process, the hollow substrate 4 is formed by butting the edge parts 3 of the substrate 2, joining this site and filling it with air. In a third process, through the use of the jig 6 with a flat surface 5 from right and left, the substrate 4 filled with air is pressed to produce a final hollow product 10 in the form of a drum. The final hollow product 10 is made nearly like a drum by biting a spacer 7 of about 5 mm thickness in a center at the time of pressing and right and left recesses 11 formed by the jig 6 forms a curve curving inward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a hollow product made of a noble metal having a unique outer surface.

[0002]

2. Description of the Related Art Hollow products made of precious metals applied to jewelry are obtained by joining hollow products each having a half-shaped shape and joining the butted portions by brazing or the like. Was. For this reason, the hollow product obtained is a simple spherical hollow product, and its use has been limited.

A hollow product made of a noble metal manufactured by applying the conventional technique is actually about 0.1 to 0.3 mm.
Only hollow spherical products of moderate thickness were produced, and it was practically almost impossible to obtain other precious metal hollow products having a complicated outer surface.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of such a conventional technique, and is not a simple spherical hollow product, but has an outer surface having a unique shape, thereby reducing the appearance and cost. To provide a hollow product applicable to many uses.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to obtain the above-mentioned hollow product. The gist of the present invention is to join a plurality of noble metal substrates and join the joined portions together. Forming a hollow substrate filled with air, and then pressing the outer surface of the hollow substrate with a press jig so that the outer surface of the hollow substrate is deformed, to form a hollow product made of a noble metal. Usually, the outer surface of the hollow substrate is curved and deformed inward.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The material of the hollow substrate used in the present invention is not particularly limited, and may be, for example, platinum, 14 gold, 18 gold, 24 gold, silver, or a precious metal material, or any other metal material. Alloy is used. Also, the hollow substrate is not particularly limited to a spherical shape, a cylindrical shape, a rugby ball shape, and the like.

According to the present invention, when a hollow substrate in which air is enclosed is preliminarily manufactured and the outer surface shape is pressed and deformed by a press, a hollow product having an extremely peculiar shape greatly different from the shape of the original hollow substrate is obtained. It is based on the knowledge that

[0008] For example, a substantially drum-shaped hollow product having a pair of indentations having curved surfaces directed inward by being pressed against a spherical hollow substrate made of noble metal by a pair of jigs having a flat press surface. Of course, the (spherical) hollow substrate can be pressed from various directions by a press jig, and depressions of various shapes and sizes are formed depending on the degree of the pressing. Is a hollow product having a unique shape.

Furthermore, the outer surface of a hollow product obtained by providing a desired shape on the press jig side also becomes complicated. For example, if the press surfaces of a pair of jigs are formed as conical concave portions, it can be obtained. The hollow product has an outer surface that looks like a soloban bead.

[0010] The hollow product obtained is basically air-tight unless a hole is formed. If the hollow product obtained is not so complicated on the outer surface, it is replaced with, for example, hot water. It has the characteristic that the inside air is heated by putting it inside, and the outer shape almost returns to the original shape by the expansion pressure of the heated air.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a view showing a manufacturing process of a hollow product made of a noble metal of the present invention. In the first process, a platinum plate 1 having a thickness of 0.2 mm is pressed to form a hemispherical base 2 having a diameter of 10 mm. This is the step of obtaining.

The second step is a step in which the edges 3 of the bases 2 are abutted and joined to each other to obtain a hollow base 4 filled with air. This joining means is not particularly limited.
Mounting method, a method of diffusing and joining the joining surfaces to each other, and a laser welding method.

In a third step, a jig 6 having a flat surface 5 from the left and right is formed by holding the air-filled hollow base 4 obtained in the second step from right and left.
To obtain a drum-shaped hollow product 10. This final product 10 has a thickness of 5 mm at the center when pressed.
Is formed into a substantially drum shape by caulking the spacer 7 of FIG.
Has a curved shape in which the outer shape of the hollow substrate 2 is completely bent inward.

When the jig 6 is pressed in the third step, the jig 6 is pressed with the spacer 7 interposed therebetween. However, the shape of the final hollow product 10 changes considerably depending on its thickness. However, an outer surface shape having various depressions 11 can be obtained, and an excellent decorative property can be obtained.

The pressing jig 6 used in the third step may not be a pair, but may be one depending on the case, and may be three or more. This will be selected according to the shape of the final product 10.

FIG. 2 shows a hollow product 10 according to another embodiment of the present invention, in which a pair of jigs 6 are provided with conical recesses 8 on the pressing surfaces thereof. Is a hollow product. In this case, the shape of the outer surface of the hollow product 10 is plastically deformed along the conical recess 8 of the pressing surface of the jig 6, and conical surfaces 12 are formed on the left and right of the hollow product 10.

When a hollow product similar to that shown in FIG. 2 is to be obtained by the conventional manufacturing method, a base having a shape half of the line a in FIG. It is necessary to perform a work of brazing the part by a machine or manual work and polishing the brazed part with a file or the like, which significantly increases the cost of the present invention. is there.

The size of the hollow product 10 is not particularly limited. Therefore, a receiving device 13 such as a chain is brazed to the hollow product 10 as shown in FIG. 3, or a chain as shown in FIG. The hollow product 10 can be used as a broach, an earring, a pendant, a pierce catch, or the like.

[0019]

The present invention is as described above. By pressing a hollow substrate with a jig, a hollow product made of a noble metal having a specific shape on the outer surface can be obtained. It can be used for jewelry.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a manufacturing process of a hollow product of the present invention, and a cross-sectional view of a substrate and a hollow product.

FIG. 2 is a sectional view of a hollow product showing another example of the present invention.

FIG. 3 is a sectional view of a hollow product showing a third example of the present invention.

FIG. 4 is a sectional view of a hollow product showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Platinum plate, 2 Hemispherical base, 3 Edge of base 2, 4 Hollow base, 5 Flat surface of jig 6, 6 Jig, 7 Spacer, 8 {Conical recess of jig 6, 10 hollow product, 11 hollow product of hollow, 12 conical surface of hollow product, 13 chain receiving device, 14 through hole.

Claims (2)

[Claims] A plurality of noble metal substrates are joined together, and the joined portions are joined together to form a hollow substrate filled with air, and then the hollow substrate is shaped so that the outer surface of the hollow substrate is deformed. The structure of a hollow product made of precious metal, whose outer surface is deformed by pressing with a press jig. 2. The structure of a hollow product made of a noble metal in which an outer surface of a hollow substrate is curved and deformed inward.