JPH0810018A - Ball chain and its manufacture - Google Patents

Abstract

PURPOSE:To improve the quality or strength of a ball chain having balls differed in color arranged at intervals of n-pieces, and establish its mass producing method. CONSTITUTION:In a ball chain having hollow balls differed in color arranged at intervals of n-pieces through a core bar, a two-layer ball B2 in which a second color ball body Bo is laminated on the outside of a first color ball body Bi, and a polygonal ball Bm in which the second color body Bo on the outside of the two-layer ball is removed to expose the first color ball body Bi on the inside are arranged at intervals of n-pieces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball chain for decorating, in which hollow spherical bodies are connected via a core rod, and a method for producing the ball chain.

[0002]

2. Description of the Related Art FIG. 6 is a sectional view of a ball chain,
Cores 2 are connected between the balls 1. Ball 1
Since the core rod and the core rod 2 are separate bodies, the ball chain in FIG. 6 can be bent freely and can be handled like an ordinary necklace.

By the way, in a normal ball chain, all the balls 1 are made of the same material, so that all the balls 1 ... Have the same color. Different ball chains are becoming popular. For example, a ball made of platinum and a ball made of gold are arranged every n pieces.

As described above, in order to manufacture a ball chain in which balls of different colors (materials) are arranged every n pieces, the steps shown in FIG. 7 are performed. That is, like (1),
For example, a ball chain Cp made of only platinum and a ball chain Ca made of only gold are manufactured. Next, as shown in (2), after cutting the core rod 2 every other piece or every few pieces,
Platinum ball Bp and gold ball B as in (3)
They are connected alternately by arranging a and brazing the core rod.

Alternatively, as shown in FIG. 8 (1), a large number of gold balls Ba and platinum balls Bp are manufactured in advance, and a thin core chain 3 as shown in (2) is inserted like a beads. Then, every other piece is made into a ball chain with a different color.

[0006]

However, the method of brazing the core rods alternately as in the former method is not suitable for mass production because of poor workability. In addition, the ball chain may be cut from a location where the brazing is defective, which causes a problem in strength.

The latter method has a problem that it is difficult to keep the distance between the balls constant, and the balls are concentrated in one place, and the quality of the ball chain cannot be satisfied.

The technical problem of the present invention is to pay attention to such a problem, to improve the quality and strength of a ball chain having n balls arranged in different colors and to establish a mass production method. It is in.

[0009]

[Means for Solving the Problems] Claim 1 is shown in FIG.
And a two-layer ball Bs in which a second color sphere Bo is laminated on the outer side of the first color sphere Bi, The outer sphere Bo of the two-layer ball Bs does not exist, the inner first color sphere Bi is exposed, and the polyhedron ball Bm is exposed.
Is a ball chain in which every n pieces are arranged.

According to the second aspect of the invention, as shown in FIG.
Instead of the polyhedral ball Bm, the ball chain is composed of a spherical ball Bs in which the outer second color sphere Bo does not exist and the inner first color sphere Bi is exposed.

According to a third aspect of the present invention, the core rod 9 in which the large diameter portions 6 and 7 having the constricted constricted portion 5 in the middle and the small diameter portions 8 are alternately formed at regular intervals is used. By inserting the two-layer pipe 4 in which the second color pipe is laminated on the outer side and drawing the two-layer pipe 4 to narrow the position of the two-layer pipe 4 corresponding to the small diameter portion 8, The parts corresponding to the large-diameter parts 6 and 7 are formed into a spherical shape, and in the state where a large number of spherical bodies are integrally connected in this way, the outer surface of each spherical body Bo is machined to form the outer spherical body Bo. At the same time as removing the inner sphere Bi into a polyhedron,
This is a method of manufacturing a ball chain.

According to a fourth aspect of the present invention, a two-layer ball in which a second-color sphere Bo is laminated on the outer side of a first-color sphere Bi is connected through a core rod, and every two n-layer balls are connected to each other. Remove the sphere Bo on the outside of the ball and remove the sphere B of the first color inside
This is a method of manufacturing a ball chain by exposing i.

[0013]

According to the present invention, the balls are different in color from the two-layer ball in which the second color sphere Bo is laminated on the outer side of the first color sphere Bi, and the polyhedron balls are arranged every n balls. As a result, balls that differ not only in color but also in outer shape are mixed, resulting in a more varied ball chain.

According to a second aspect, the two-layer ball and the two
In the case of a ball chain in which the outer sphere Bo of the layered ball does not exist and the inner sphere Bi of the first color is exposed is arranged every n pieces, the ball chains having different colors are formed every n pieces. The structure of the ball chain can be exactly the same as that of the conventional ball chain, and the deterioration of the quality and strength of the ball chain can be prevented.

In the two-layer pipe 4, a core rod 9 in which large-diameter portions 6 and 7 having a narrowed portion 5 for separation and small-diameter portions 8 are alternately formed at regular intervals, as in claim 3, is provided. In the inserted state, the two-layer pipe 4 is drawn to form the large-diameter portion 6,
The portion corresponding to 7 is formed into a spherical shape, and in the state where a large number of spherical bodies are integrally connected in this way, the outer surface of each spherical body is machined to remove the outer spherical body Bo and the inner spherical body. According to the method of manufacturing a ball chain by processing Bi into a polyhedron, it is possible to easily mass-produce mechanically ball chains having excellent designs with different colors and outer shapes every n pieces.

Further, in a state in which the two-layer balls are connected to each other as in claim 4, the outer spheres Bo of the two-layer balls are removed every n pieces, and the inner first-sphere spheres Bi are removed. According to the method of manufacturing the ball chain by exposing it, after mechanically manufacturing the ball chain in the same manner as the conventional method, it is sufficient to remove only the required balls and the outer second sphere Bo by etching or machining. Easy and reliable manufacturing.

[0017]

EXAMPLES Next, practical examples of how the ball chain and the manufacturing method thereof according to the present invention are embodied will be described. In the ball chain of FIG. 1 (b), if the inner sphere Bi is made of, for example, platinum and the outer sphere Bo is made of, for example, gold, platinum balls and gold balls are mixed every n pieces. A ball chain with a combination structure.

Moreover, since the conventional mechanical manufacturing method of the ball chain can be used as it is, it is suitable for mass production,
Moreover, it is possible to surely manufacture so as not to reduce the strength.

The ball Sm in which the inner sphere Bi is exposed in FIG. 1A has a structure in which the outer sphere Bo is not present and the inner sphere Bi is exposed as it is, as shown in FIG. 1A. The inner sphere Bi may be formed in a polyhedron. In this way, if the inner spherical body Bi is a polyhedron, a more varied ball chain is obtained.

FIG. 2 and subsequent figures show an embodiment of the method for manufacturing a ball chain according to the present invention in the order of steps. FIG. 2 shows a method for manufacturing a pipe having a two-layer structure, and FIG. 3 shows a ball chain made of two-layer spherical bodies. It is a manufacturing method.

First, as shown in FIG. 2A, two plates 41 and 42 made of different materials are attached to each other and integrated. For example, the lower plate 41 is made of platinum and the upper plate 42 is made of gold. Next, as in (2), a two-layer pipe is manufactured by forming a cylinder so that the side of the plate 42 made of gold is the outside. Then, as shown in (3), the mandrel 9 integrally connected is inserted into the two-layer pipe, and drawn in the step shown in FIG.

That is, as shown in FIG. 3 (1), first, a core rod 9 in which large-diameter portions 6 and 7 having a constricted portion 5 for separation and small-diameter portions 8 are alternately formed at regular intervals at a boundary portion. Is inserted into the two-layer pipe 4 and the two-layer pipe 4 is drawn. At this time, by narrowing down the position corresponding to the small diameter portion 8 of the two-layer pipe 4, and further gradually narrowing the portion corresponding to the small diameter portion 8 in the order of (1) (2) (3), (3) As shown in the figure, it is formed into a spherical shape having a deep narrowed portion 10.

After manufacturing the connected body of spheres as described above,
The inner sphere Bi is exposed every n times. Internal sphere B
To expose i, there is a method of chemically etching the outer sphere Bo or a method of removing it by machining. In the case of chemical etching, as shown in FIG. 3 (4), the coating film 11 made of resin or the like is applied only to the spheres that do not etch the outer sphere Bo.

FIG. 4 shows a chemical etching method, in which a jig 1 made of a conductor is placed in an electrolytic solution 12 such as cyan.
3 is used to immerse the coupling body 4b coated with the film as shown in FIG. 3 (4), and the power source 14 is connected so that the chain 4b side is the positive electrode and the electrolytic solution 12 side is the negative electrode, and the energization is performed. .

Then, only the sphere not covered with the coating 11 of FIG. 3 (4) is etched and the outer sphere Bo is etched by the principle of electric field polishing. After that, when the coating 11 is pulled up from the electrolytic solution and the coating 11 is removed by a thinner or the like, a ball chain in which the outer sphere Bo does not exist and the inner sphere Bi is exposed every other n balls as shown in FIG. 1B. Is obtained.

In the illustrated example, the outer spherical body Bo of the spherical body 4b is made of gold, but it goes without saying that the electrolytic solution 12 is determined according to the material of the outer spherical body Bo. Further, in the example of FIG. 3 (4), since the spherical connecting body 4b is integrally connected and pressure-bonded to the core rod 9, the electrical connection with the power source is excellent.

On the other hand, from the deep drawing portion 10 to the connecting body 4b.
It is also possible to separate the inner core rod 9 at the position of the constricted portion 5 and then to perform etching, but in this case, a jig 13 is used to pull both ends of the ball chain. Thus, electrical continuity is secured.

FIG. 5 shows an embodiment in which the outer sphere Bo is removed by machining. First, as shown in FIG.
Connect the two-layer sphere connecting body 4b of (3) to the cylindrical holder 1
Insert into Nos. 5 and 16 and hold. And the internal angle α is 13
Three flat surfaces are formed by linearly or rotationally moving the diamond cutting tool 17 of 5 degrees in the direction perpendicular to the paper surface.

Then, the spherical connecting body 4b is rotated by a predetermined angle by the holders 15 and 16, and the above-mentioned processing is performed again by the diamond cutting tool 17.
By repeating such processing and intermittent rotation, the spherical connected body 4
When b is rotated once, a polyhedron as shown in FIG. 1A is formed.

At this time, first, the outer surface of the sphere is ground by the diamond cutting tool 17, the outer sphere Bo is ground and removed, and then the inner sphere Bi is ground,
Only the inner sphere Bi is exposed and becomes a polyhedron. When forming the polyhedron Bm in this way, it is preferable that the inner ball Bi is made of gold and the outer ball Bo is made of platinum.

The processing for making such a polyhedron was performed for all balls in Japanese Patent Application No. 3-19726 previously proposed by the applicant of the present invention, whereas
In the case of the present invention, every n pieces are processed. That is, as in the illustrated example, every other one may be subjected to the flat surface processing, or every plural one may be subjected to the flat surface processing.

When the planar processing is completed in this way,
(2) As shown in the figure, the ball cutting tool 18 cuts off the balls from the deep drawing section 10 of the sphere connecting body 4b to separate the balls, and when an external force is applied, the inner core rod 9 is removed at the constricted section 5. It breaks and separates, resulting in the state shown in (3).

FIG. 5 shows an example of forming a polyhedron. When a diamond cutting tool having a semicircular cutting edge is used, only the outer sphere Bo is ground and removed, and the inner sphere Bi is exposed. Specifically, it has the same structure as the ball chain chemically etched by the method of FIG.

In the ball chain of the present invention, spheres having different materials (colors) are arranged every n pieces, where n is 1 or 2.
The above may be plural or random. Further, as the material of the inner first color sphere Bi and the outer second color sphere Bo, gold and platinum are exemplified, but other materials may be used, and white gold may be used instead of platinum. Can be substituted.

[0035]

As described in claim 1, a spherical body B made of gold, for example.
A two-layer ball Bs in which a sphere Bo made of platinum is laminated on the outer side of i, and a sphere Bo made of platinum outside the two-layer ball does not exist, and the inner sphere Bi made of gold is exposed and becomes a polyhedron. By arranging every n balls Bm and forming a ball chain, every n balls made of gold and having a good design in which polyhedral balls are mixed, the ball chain has exactly the same structure as the conventional ball chain. It is possible to prevent deterioration of the quality and strength of the ball chain.

According to claim 2, the n-th two-layer ball Bs and the ball in which the outer spherical sphere Bo of the two-layer ball Bs does not exist and the inner gold sphere Bi is exposed are provided. In the case of the arranged ball chains, every n ball chains having different colors can be realized with exactly the same structure as the conventional ball chain, and the deterioration of the quality and strength of the ball chain can be prevented.

According to a third aspect of the present invention, the core rod in which the large-diameter portions 6 and 7 having the narrowed portion 5 for separation in the middle and the small-diameter portions 8 are alternately formed at regular intervals is used as the pipe of the first color. By inserting the two-layer pipe 4 in which the pipe of the second color is laminated on the outside of the two-layer pipe 4 and drawing the two-layer pipe 4 to narrow the position corresponding to the small diameter portion 8 of the two-layer pipe 4. , The parts corresponding to the large-diameter parts 6 and 7 are formed in a spherical shape, and in the state in which a large number of spherical bodies are integrally connected in this way, the outer surface of the outer spherical body Bo And removing the inner sphere Bi into a polyhedron,
According to the method of manufacturing the ball chain, ball chains having excellent designs with different colors and outer shapes every n pieces can be easily mass-produced mechanically.

Further, as in claim 4, the two-layer ball Bs
In the state where the two balls are connected to each other, the outer platinum balls Bo of the two-layer ball are removed and the inner gold balls B are removed.
According to the method of manufacturing a ball chain by exposing i, it is sufficient to machine only the ball chain in the same manner as the conventional method, and then remove only the required balls and the outer platinum sphere Bo by etching or machining. Easy and reliable mass production.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a basic principle of a ball chain according to the present invention.

FIG. 2 is a perspective view showing a method for manufacturing a two-layer pipe.

FIG. 3 is a cross-sectional view showing a pipe drawing method in the order of steps.

FIG. 4 is a diagram illustrating a method of chemically removing the outer ball.

FIG. 5 is a diagram showing a method of manufacturing a ball chain in which polyhedral balls are mixed.

FIG. 6 is a cross-sectional view of a normal ball chain.

FIG. 7 is a diagram showing a method of manufacturing a two-color ball chain in process order.

FIG. 8 is a diagram showing a manufacturing method of a two-color ball chain by hand in the order of steps.

[Explanation of symbols]

Bi Inner first color sphere Bo Outer second color sphere B2 Two-layer ball Bm Polyhedral ball Bs Outer sphere Exposed inner first color sphere exposed spherical ball 4 Two-layer pipe 5 Constriction part 6,7 Large diameter part 8 Small diameter part 9 Core rod 10 Drawing part 11 Coating

Claims (4)

[Claims] 1. A two-layer ball B2, which is a ball chain in which balls of different colors are arranged every n pieces, wherein a second-color ball Bo is laminated on the outer side of a first-color sphere Bi. A ball chain characterized in that the outer sphere Bo of the two-layer ball is removed to expose the inner first sphere Bi, and the polyhedron balls Bm are arranged at intervals of n. 2. A ball chain in which balls of different colors are arranged every n pieces, and a two-layer ball B2 in which a second color sphere Bo is laminated on the outer side of a first color sphere Bi, A ball chain, wherein the outer sphere Bo of the two-layer ball is removed and the inner first sphere Bi is exposed, and spherical balls Bs are arranged every n pieces. 3. A core rod 9 having large-diameter portions 6 and 7 and a small-diameter portion 8 having a constricted portion 5 for separation in the middle is alternately formed at regular intervals, and a core rod 9 is provided outside the pipe of the first color. With the two-color pipes inserted in the laminated two-layer pipe 4, the two-layer pipe 4 is drawn and the position corresponding to the small-diameter portion 8 of the two-layer pipe 4 is narrowed. Diameter 6, 7
The part corresponding to is formed into a spherical shape, and in the state where a large number of spherical bodies are integrally connected in this way,
A method for manufacturing a ball chain, characterized in that the outer sphere Bo is removed by machining the outer surface of every n spheres, and the inner sphere Bi is processed into a polyhedron. 4. A two-layer ball, in which a second-color sphere Bo is laminated on the outer side of a first-color sphere Bi, is connected via a core rod to the outside of the two-layer ball every n pieces. The method for producing a ball chain, wherein the spherical body Bo of No. 1 is removed to expose the inner spherical body Bi of the first color.