JPH03254329A - Manufacture of decorative chain - Google Patents

Abstract

PURPOSE:To obtain a multiple decorative chain having a two-tone spiral pattern by putting a metallic inside material on the inside of a metallic outside material different in quality from the above inside material, rolling them into a wide thin sheet, forming it by a slitter into an angular wire rod, then, linking ring bodies with this wire rod in the shape of many rows of chains. CONSTITUTION:The metallic inside material 2 different in quality from the outside material 1 is put on the inside of the metallic outside material 1 and this laminated material 3 is rolled by a continuous multistage rolling mill to obtain a wide sheet 4. Then, the sheet 4 is cut by a slitter to make a slender and angular rod 7 wherein the half 5 of the outside and the half 6 of the inside are different in quality. The ring bodies 8 are linked with this angular wire rod 7 in the shape of many rows of chains to obtain a multiple decorative chain 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing decorative chains such as jewelry chains and decorative chains.

[Conventional technology]

Conventionally, a multi-ring ornamental chain constructed by connecting a large number of annular bodies in a chain with a plurality of annular bodies passing through one annular body has been made of a square type made of one type of metal. Types made of wire are known.

[Problem to be solved by the invention]

When the decorative multi-strand chain described in the prior art is hung naturally, each ring rests on the adjacent ring and sag, so that the entire chain spirals. It has a twisted state and a three-dimensional feel, and the one without the twist looks expensive. However, this is only one color tone and is only native to China.

The object of the present invention is to provide a method for manufacturing a novel multi-strand ornamental chain with two tones forming a spiral pattern.

[Means to solve the problem]

In order to achieve the above object, the method for manufacturing a decorative chain of the present invention includes stacking a metallic backing material (2) which is different from the fronting material (1) on the back side of a metallic fronting material (1), and stacking the overlapping material ( 3)
is rolled using a continuous multi-stage rolling mill to produce a wide thin plate (4
), a step of cutting the thin plate (4) with a slitter to obtain a thin square wire rod (7) whose front half (5) and back half (6) are different, and using the square wire rod (7). The steps of obtaining a multi-row ornamental chain (9) in which ring-shaped bodies (8) are connected in a chain shape in multiple rows are carried out in sequence.

[For production]

When the decorative chain obtained by the manufacturing method of the present invention is hung naturally, each annular body (8)
The metal on the front side of each annular body (8) and the metal on the back side of each annular body (8) are different in quality due to differences in quality, especially differences in color. It reveals a spiral pattern of two tones twisted like a rod.

Incidentally, according to the present invention, the front side material (1) and the back side material (2) are brought into close contact with each other and thinned by the rolling force during continuous rolling, and are in a state of being joined together in a manner that cannot be separated.

〔Effect of the invention〕

Since the present invention has the above-described structure, it is possible to commercialize a decorative chain having two tones forming a spiral pattern. The chain has a spiral pattern in two colors in addition to the twist, and looks more expensive than the conventional chain.

〔Example〕

Embodiments of the present invention will be described based on the drawings.

First, on the back side of a rectangular bar-shaped metal front material (1), a metal back material (2) which is different from the front material (1) is stacked, and this stacked material (3) is passed through a continuous multi-stage rolling machine (not shown). A wide thin plate (4) is obtained by rolling.

Next, the thin plate (4) is cut in the longitudinal direction with a slitter (not shown) to obtain a thin rectangular wire rod (7) in which the front half (5) and the back half (6) are different.

Thereafter, this square wire rod (7) is used to obtain three decorative chains (9) in which the annular bodies (8) are connected in three rows in a chain.

The present invention mainly uses gold, silver,
Use metals such as platinum. Further, in the embodiment, a three-strand ornamental chain is used, but a two-strand type, a four-strand type or more can also be used.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the process of obtaining a thin plate from stacked materials, FIG. 2 is a perspective view showing the finished product, and FIG. 3 is a partially cutaway perspective view showing the annular body. (1)...Front side material, (2)...Back side material, (3)...
・Layered material, (4)... thin plate, (5)... front side material,
(3)...Layered material, (4)...Thin plate, (5)...
- Front half, (6)... Back half, (7)... Square wire, (8)... Annular body, (9)... Decorative chain. Patent applicant Kunimitsu Masuda diagram

Claims (1)

[Claims] A metal back side material (2) which is different from the front side material (1) is stacked on the back side of the metal front side material (1), and this overlapping material (3)
is rolled using a continuous multi-stage rolling mill to produce a wide thin plate (4
), a step of cutting the thin plate (4) with a slitter to obtain a thin square wire rod (7) whose front half (5) and back half (6) are different, and using the square wire rod (7). A method for manufacturing a decorative chain, which comprises sequentially performing the steps of obtaining a multiple decorative chain (9) in which ring bodies (8) are connected in a chain in multiple rows.