JP4072567B2 - Method for manufacturing wire for jewelry - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a wire for a decorative tool used for a necklace, a bracelet, an anklet, or the like .
[0002]
[Prior art]
Since accessories such as necklaces, bracelets or anklets are to be attached to the body in an annular shape, they require flexible flexibility and strength against bending and pulling, such as gold, platinum, silver, copper or their alloys. When the material is a wire, there is a certain limit to reducing its diameter.
[0003]
Therefore, these accessories are usually used in the form of linked chains and used as wires. As a typical example, as shown in FIG. 1, a large number of rings 2 are alternately arranged in a cross shape in the longitudinal direction. There is what is called connected red beans 1. In addition, there is a so-called Kihei 5 in which a flat chain is formed by pressing a large number of rings 6 connected at a narrow interval as shown in FIG.
[0004]
However, a large-diameter accessory is required for luxury and heavyness, but a small-diameter accessory is preferable for simplicity and light weight. In the case of the red beans 1 and Kihei 5, the entire accessory It is difficult to reduce the diameter or the width.
[0005]
On the other hand, as shown in FIG. 3 and the like, a so-called omega 10 accessory wire has been developed. The omega 10 is an accessory that can be reduced in diameter to a certain extent. For example, as the thinnest one, the Kihei formed with a chain of a noble metal wire having a diameter of about 0.3 mm is further provided on the side portion. A chain-shaped core wire 11 having a diameter of about 0.6 mm and having a substantially round cross section is prepared by pressing from the direction to crush the gaps between the rings. Then, a thin noble metal wire having a diameter of about 0.2 mm is spirally wound in advance to form a cylinder 12 having an outer diameter of about 1.0 mm and an inner diameter of about 0.6 mm. It is manufactured by press-fitting and inserting the core wire 11.
[0006]
However, even with the omega 10 described above, when a precious metal material is used, the chain-shaped Kihei is originally pressed into the thin core wire 11, so there is a certain limit to reducing the diameter. Yes, it is not possible to form an extra-fine jewelry wire. Further, since the core wire 11 is press-fitted into the cylindrical body 12 formed in advance by a noble metal wire, the omega 10 is somewhat lacking in the flexibility as an accessory.
[0007]
[Problems to be solved by the invention]
An object of the present invention is to provide a method for manufacturing a jewelry wire that can be formed into an extremely small diameter, has a restoring force even when bent at an acute angle, and has excellent tensile strength.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention described in claim 1 is characterized in that a nickel titanium alloy or a superelastic shape memory alloy made of nickel titanium cobalt alloy is used as a cross-sectional polygon and a plurality of strands are twisted. A step of forming an ultrafine core wire having a diameter of about 0.7 mm or less, a step of forming a noble metal material of gold, platinum, silver, copper, or an alloy thereof into a decoration wire having a diameter of about 0.2 mm or less; By winding the decorative wire spirally around the outer periphery of the core wire without any gaps, and by cutting and polishing the surface of the wound decorative wire with a rotating cutter, forming the cross-sectional shape into a half-moon shape, It is a method for manufacturing a jewelry wire such as a necklace, a bracelet, and an anklet .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of a jewelry wire according to the present invention will be described with reference to FIGS. 6 to 8. FIG. 6 is a front view showing a part of the first jewelry wire according to the present invention, and FIG. It is a front view which shows the state which winds a decoration belt. 8 is a cross-sectional view taken along line BB in FIG.
[0010]
In the first accessory wire 21, the core wire 22 is formed of a so-called superelastic shape memory alloy such as a nickel titanium alloy or a nickel titanium cobalt alloy. By making the core wire 22 a superelastic alloy, even if it is a very thin wire rod, it can be provided with a restoring force even when bent at an acute angle, and has a certain strength against tension while maintaining flexibility. Can do.
[0011]
The diameter of the core wire 22 can be formed in the range of about 0.1 mm to about 0.7 mm, but is preferably about 0.3 mm in consideration of the strength as a thin accessory wire. This is because an accessory wire having a very small diameter may be cut when a strong tensile force is applied even if it is a superelastic shape memory alloy. The cross-sectional shape of the core wire 32 is not limited to the illustrated circle, but may be a polygon such as a triangle, a quadrangle, or a hexagon.
[0012]
A noble metal material made of, for example, gold, platinum, silver, copper, or an alloy thereof is made thin and long on the outer periphery of the core wire 22 to form a decorative band 25 and wound in a spiral shape. The decorative band 23 can be formed by passing a wire made of the material through a so-called wire drawing plate in which a hole having a desired decorative band shape is opened in a metal plate.
[0013]
The decorative band 23 may have a thickness of about 0.1 to 0.2 mm, preferably about 0.1 mm. If it is too thin, it will be difficult to wrap around the core wire 22 to be described later, and if it is too thick, the first accessory wire 21 will be expensive due to the precious metal being expensive. Further, the width of the decorative band 23 can be formed in the range of about 0.1 to 1.0 mm, preferably about 0.15 mm. This is because when the too wide decorative band 23 is wound, the first accessory wire 21 is not flexible.
[0014]
The shape of the decorative band 23 is not necessarily the illustrated flat shape, and can be formed by drawing a round line or a square line.
[0015]
When the decorative band 23 made of a noble metal material is wound spirally, it naturally forms a spring and is crimped to the core wire 22. Note that the winding is performed by a method in which a decorative band 23 that is wound around a core wire 22 fed out at a constant speed is rotated. The method of rotating may be either manual work or automatic winding by a machine.
[0016]
For example, by winding a decorative band 23 having a thickness of about 0.1 mm on a core wire 22 having a diameter of about 0.3 mm in a spiral shape, the first ultrathin wire 21 having a diameter of about 0.5 mm can be manufactured.
[0017]
Since the core wire 22 is a superelastic shape memory alloy, it easily peels off when plated with the noble metal material. Therefore, the decorative band 23 can be applied to an accessory that was impossible in the past. This is possible.
[0018]
The first accessory wire 21 is cut to a length suitable for the purpose of use. For example, a jewel 26 is hung in the center, and a clasp 27 as a connector is attached to both ends, as shown in FIG. It can be used as a necklace 50 excellent in simplicity and light weight.
[0019]
As shown in FIG. 10, the second accessory wire 31 showing the second embodiment of the present invention is formed on the outer periphery of the core wire 32 made of a superelastic shape memory alloy as in the first accessory wire. In addition, at least two or more decorative bands 33 formed of a noble metal material are spirally wound and manufactured by pressure bonding.
[0020]
By winding a plurality of decorative bands 33, a wire for jewelry can be manufactured that is more mesh-like and has a high-class feeling and is excellent in aesthetics. Furthermore, by using a noble metal material having different colors, such as platinum 33a and gold 33b, for example, the second accessory wire 31 that is rich in color can be manufactured.
[0021]
As shown in FIG. 11, a third accessory wire 34 showing a third embodiment according to the present invention is formed by twisting two ultrafine wires having a diameter of about 0.2 mm, for example. A core wire 35 having a diameter of about 0.4 mm is formed, and a decorative band 36 made of the same precious metal material as described above is spirally wound around the outer periphery of the core wire 35 and is manufactured by pressure bonding. is there.
[0022]
In the present embodiment, the core wire 52 is formed by twisting a plurality of ultra-fine strands, so that the jewelry wire 51 with extremely excellent strength against bending can be manufactured.
[0023]
As shown in FIGS. 12 to 16, a fourth accessory wire 41 showing a fourth embodiment according to the present invention is made of the same superelastic shape memory alloy as in the previous embodiments, and has a diameter of about 0, for example. For example, a decorative wire 43 made of a noble metal material and having a diameter of about 0.2 mm is spirally wound around the outer periphery of a 3 mm core wire 42 and crimped. Next, the core wire 42 around which the decorative wire 43 is wound is passed through a cutter 45 having a semicircular concave cut surface formed with a radius of 0.5 mm and rotating at a constant speed, and the surface thereof Cutting and polishing. The surface of the wound decoration line is a continuous smooth surface, and each cross-sectional shape is a half-moon shape.
[0024]
In such a case, the wound decorative wire 43 is polished by the cutter 45 even by using a slightly larger diameter decorative wire 43, so that the process of winding the decorative wire 43 around the core wire 42 is easy and completed. The jewelry wire 41 can have a small diameter. Moreover, since the gap | interval 44 is produced inside each decoration line 43 in the wire 41 for accessories, it can have more flexibility with respect to bending, and the quantity of the noble metal material used is also reduced in the gap part. Therefore, it is possible to reduce the cost.
[0025]
The fifth accessory wire 46 showing the fifth embodiment according to the present invention is, for example, a trapezoidal concave as shown in FIG. 17 and the like, similar to the accessory wire manufactured according to the fourth embodiment. The two cutters 48 having a cut surface such as a shape are rotated at opposite angles on the same axis, and the core wire 42 around which the decorative wire 43 is wound is passed on the axis. In such a case, the cross-sectional shape of the outer periphery of the decoration line 43 can be formed in a polygon such as a hexagon. Therefore, it is possible to provide the extravagant wire 46 that is rich in variations in appearance.
[0026]
The present invention has been described in detail with reference to the illustrated embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. Needless to say, it can be transformed.
[0027]
【The invention's effect】
According to the present invention, it is possible to produce a jewelry wire that has a remarkably small diameter as compared with the conventional one, can be restored even when bent at an acute angle, and has strength against pulling. can do. In addition, variations in color and shape can be imparted to the thin accessory wire manufactured.
[0028]
[Brief description of the drawings]
FIG. 1 is a partially broken front view of a conventional red bean chain.
FIG. 2 is a partially broken front view of a conventional Kihei chain.
FIG. 3 is a partially cutaway front view of a conventional omega wire.
4 is a cross-sectional view taken along line AA in FIG.
FIG. 5 is a partially broken front view showing a manufacturing process of an omega-shaped accessory wire.
FIG. 6 is a partially cutaway front view of a first accessory wire of the present invention.
FIG. 7 is a partially broken front view showing the manufacturing process of the first jewelry accessory wire.
8 is a cross-sectional view taken along line BB in FIG.
FIG. 9 is a front view showing a state in which a necklace is formed with a first accessory wire.
FIG. 10 is a cross-sectional view showing a manufacturing process of the second jewelry accessory wire of the present invention.
FIG. 11 is a cross-sectional view showing a manufacturing process of the third jewelry accessory wire of the present invention.
FIG. 12 is a partially broken cross-sectional view showing the first manufacturing process of the fourth jewelry accessory wire of the present invention.
FIG. 13 is a partially broken cross-sectional view of the fourth jewelry accessory wire of the present invention after the first manufacturing step.
FIG. 14 is a front view showing a second manufacturing process of the fourth jewelry accessory wire of the present invention.
FIG. 15 is a front view of a fourth jewelry accessory wire according to the present invention.
FIG. 16 is a partially broken cross-sectional view showing a fourth jewelry accessory wire according to the present invention.
FIG. 17 is a front view showing a second manufacturing step of the fifth jewelry accessory wire according to the present invention;
FIG. 18 is a front view of a fifth accessory wire of the present invention.
[0029]
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Azuki 2 Ring 5 Kihei 6 Ring 10 Omega 11 Core wire 12 Tubular body 21 First accessory wire 22 Core wire 23 Decoration belt 26 Jewel 27 Clasp 29 Necklace 31 Second accessory wire 32 Core wire 33 Decoration belt 34 Third accessory wire 35 Core wire 36 Decorative belt 41 Fourth accessory wire 42 Core wire 43 Decorative wire 45 Cutter 46 Fifth accessory wire 48 Cutter

Claims (1)

A step of forming a super-fine core wire having a diameter of about 0.7 mm or less by twisting a plurality of strands with a polygonal cross-sectional shape by a nickel-titanium alloy or a super-elastic shape memory alloy made of nickel-titanium cobalt alloy; A step of forming a noble metal material of gold, platinum, silver, copper or an alloy thereof into a decorative wire having a diameter of about 0.2 mm or less, and a step of winding the decorative wire in a spiral shape around the core wire without any gaps And a method of manufacturing a jewelry wire such as a necklace, a bracelet, and an anklet by cutting and polishing the surface of the wound decorative wire with a rotating cutter and forming the cross-sectional shape into a half-moon shape .

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