JPS6091508A - Method and device for manufacturing twisted wire - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method and apparatus for manufacturing twisted wires from any number of cables, and particularly to short wire cables with a length of several meters or less in the field where twisted wires are wired and used. The present invention relates to a method and apparatus for producing twisted wire from.

[Background of the invention]

2. Description of the Related Art Conventionally, a method shown in FIG. 1 has been known as a method for manufacturing a twisted wire in a twisted wire manufacturing factory. An arbitrary number of cables 2 pulled out from each cable bobbin 1 are passed through each guide hole 4 of a guide 3 and twisted together to form a twisted wire 5, and then sent to a twisted wire bobbin 6 and wound up. The work of twisting each cable 2 together was accomplished by rotating the twisted wire bobbin 6 around the axis of the twisted wire 5. Therefore, the twisted wire bobbin 6 had to be rotated A for winding 50 twisted wires and rotated B for twisting and combining at the same time. Alternatively, there is another method in which the twisting work is performed by rotating the cable bobbin 1 and the guide 3 as a whole (Japanese Patent Application Laid-Open No. FLF15
7-210089). However, both methods require large-scale equipment for the twisting work.

The above technology was for manufacturing twisted wires at the Twist 11 manufacturing factory, but the technology shown in Figure 2 is a method for manufacturing twisted wires from relatively nearby cables at the site where twisted wires are wired and used. is publicly known. That is, one end P of an arbitrary number of relatively close cables 2 required for manufacturing the twisted wire 5 required on site is connected, the other end Q is suitable for a guide (not shown), and a drill (not shown) is connected to the connected end P. Twisted wire was manufactured by rotating a ridge drill.

[Problems with background technology]

In this on-site manufacturing technology, internal stress is generated in each cable 2 due to the rotation of the drill, this internal stress increases, and plastic deformation occurs in each cable 2, which causes the twisted wire 5 to be manufactured. It is something that For this reason, internal stress is necessarily generated in each cable 2, and a large strain is placed on each cable 2, which is not preferable.

In addition, when manufacturing twisted wires at a factory, in order to reduce this internal stress, in addition to rotating the twisted wires for twisting and combining, each cable was also rotated in the same direction. Such complicated equipment was impractical for manufacturing twisted wire in the field.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned problems, and when manufacturing twisted wires from relatively short cables on-site, it is possible to: , (2) It is an object of the present invention to provide a method and apparatus that can easily produce twisted wires.

[Summary of the invention]

(1) The twisted wire manufacturing method of the first invention provides rotation to an arbitrary number of cables to be twisted together, and also to rotation in the same direction of each cable axis to each cable. Cables are automatically twisted together to produce twisted wires.

The principle of this first invention will be explained with reference to FIGS. 3 to 6. As shown in FIG. 3, if a rigid cable 11 made of a rigid material and a highly flexible cable 12 made of a highly flexible material are connected to P.
Consider the case where the cables 11, 12 are joined at a point and each of these cables 11, 12 is passed through a guide hole 14, 14 provided in the guide 13 to produce a twisted wire. When the rigid cable 11 is rotated around the cable axis, the highly flexible cable 12 becomes entangled with the rigid cable 11 starting from point P, as shown in FIG. At this time, the highly flexible cable 12 rotates around the axis of the highly flexible cable 12 in the same direction as the rotation of the rigid cable 110. In this way, the highly flexible cable 12
As the highly flexible cable 12 rotates by itself, the internal stress of the highly flexible cable 12 becomes close to zero. Since the internal stress is close to 0, no plastic deformation occurs in this highly flexible cable.

The above can also be said in the same way when both cables to be twisted are made of highly flexible couples 12 and 12. That is, as shown in FIG. 5, the highly flexible cables 12 and 12 become entwined with each other and the internal stress becomes close to zero. The two highly flexible cables 12.12 are then in the form of twisted wires.

In addition, in Figure 5 above, one side of the highly flexible cable is rotated, but the same thing can be done in the case of 7 ICs, where both highly flexible cables are rotated in the same direction and at the same speed. I can say it. By feeding each cable in the axial direction of each cable, twisted wires can be manufactured continuously.

Although the principle of manufacturing a twisted wire using two cables has been described above, the same principle can be applied to manufacturing a twisted wire using any number of cables, such as three or more cables. FIG. 6 shows the principle of the present invention in the case of manufacturing twisted wires for a total of five highly flexible couples. In this case as well, each cable 15 is rotated in the same direction and at the same speed around each cable axis, and each cable is automatically twisted together to produce a twisted wire.

(2) The twisted wire manufacturing apparatus according to the second invention is the most suitable apparatus for carrying out the twisted wire manufacturing method according to the first invention.

Two rollers press the twisted wire portion formed by twisting each cable together from both sides.

For each part of the cable that has not yet been twisted together,
A truncated cone is provided around which each cable is wound and contacted. The conical blocks are provided as many as the number of cables, and each conical block is provided at a radial position with respect to the twist wire.

Each of the conical pieces is rotatable around the central axis 9, with the small lower surface facing the twist line side, and the respective central axes converging at one point on the twist line side.

Further, when the twisted wire pressed by the roller is forcibly pulled out from the device, the roller rotates, and in conjunction with the rotation of the roller, each of the conical pieces rotates in the same direction and at the same speed. It has become.

Each cable is wrapped around and in contact with each conical sesame, so
As each cone rotates, each cable is rotated around the cable axis and automatically twisted together to form a twisted wire.

[Embodiments of the invention]

An embodiment of the present invention will be described with reference to FIGS. 7 to 11. Each cable 2 inserted into the device from the right side is twisted together to form a twisted wire 5 and pulled out from the left side.

The twisted wire 50 portion is pressed from both sides by two rollers 21.

Each portion of each cape A/2 that has not yet been twisted is provided with a conical separator 22 on which each cable 2 is wound and contacted. The conical sesame pieces 22 have a truncated cone shape, and are provided as many as the number of nine cables 2, and are provided at radial positions with respect to the axis of the twisted wire 5 (however, two
(two conical sesame, only two cables are represented).

Each conical sesame 22 is rotatable around its respective central axis 9,
The small bottom face faces the twist line 5 side, and each center line converges on one point R on the twist line 5 side.

The roller 21 is provided with a handle 23 for rotating the row 221. Further, a gear 25 is provided on the shaft 24 of the row 221, and another gear 26 is provided in contact with this gear 25. A bevel gear 28 is provided on the shaft 27 of this other gear 26, and this bevel gear 28 meshes with another bevel gear 29 provided at the tip of the conical separator 22.

Furthermore, a guide 30 for guiding the cable 2 is provided on the right side of the conical sesame 22.

This guide 30 is rotatably provided coaxially with the central axis 31 of the conical sesame 22, has a disc shape, and has a guide hole 32 provided on the circumference of the disc.

(9) A locking device 133 is further provided to lock the rotated temporary guide 30.

The operation of this embodiment will be explained below.

When the twisted wire 5 is pulled out from the left side of the device, the drums 21°21 on both sides that were pressing the twisted wire 5 rotate, and according to this rotation, the shaft 24, gears 25, 26, shaft 27, and bevel gears 28°29 Sesame cone via 22
is rotated.

Due to the rotation of the conical block 22, the cables 2.2 that are wound around and in contact with the conical block 22 are rotated around their respective cable axes. This principle will be explained with reference to FIGS. 7 and 8. That is, when the cable 2 wound around and in contact with the conical sesame 22 is pulled in the direction of arrow F, the cable 22 receives a force f as shown in FIG. The force f is the conical sesame 22
This is caused by the frictional force between the cable and the cable, and can be divided into a force f in the cable axis direction and a force f in the direction perpendicular to the cable axis. Of these, the product of f and the cross-sectional radius r of cable 2 is
It provides a rotational moment to rotate the cable 2. As described above, each cape (10) 2 is rotated around each cable axis, forming a twist @5, and being pulled out from the left side of the device.

Next, the operation when each cable 2 is set in this device will be explained.

Each cable 2.2 is inserted through a guide hole 32 of the guide 30. At this time, the guide hole 32 of the guide 30 is located toward the inside of the device. Cable 2 connects drum 21.2
1, the drum 21.21 is rotated by the handle 23, thereby being delivered from the left side of the device.

After the cable 2 is fed out, the guide 30 is rotated through 180 degrees so that the guide hole 32 is located toward the outside of the device. As a result, the cable 2 inserted into the guide hole 32 is wound around and comes into contact with the conical piece 22.

After the above setting is completed, the cable 2 sent out from the left side of the apparatus is pulled out by hand or by the handle 23 to produce a twisted wire.

(11) According to the above embodiment, each cable 2 is automatically rotated in the same direction around each cable axis, and a twisted wire without internal stress can be manufactured. Further, by using the conical separator 220, the cable 2 can be dynamically rotated around the cable axis by the force of pulling out the twisted wire 5 from the left side of the device. Therefore, separate forces imparting rotation to each cable 2 are not required. Furthermore, the cable 2 can be easily wound around the conical block 22 and brought into contact with the guide 30, which is rotatably provided around the central axis of the conical block 22. Therefore, the twisted wire 5 can be easily manufactured on site.

〔Effect of the invention〕

According to the twisted wire manufacturing method and apparatus of the present invention, it is possible to prevent internal stress from occurring in each cable of the manufactured twisted wire. In addition, as mentioned in the explanation of Fig. 2, in conventional twisted wire manufacturing factories, in order to reduce the internal stress of each cable, the cable axis rotation (12) is also applied to each cable. However, it has not been done to produce a twisted wire by twisting only by actively giving each cable rotation in the same direction about each cable axis as in the present invention.

Therefore, since the present invention does not apply any rotational force to the twisted wire, it is effective in manufacturing relatively short twisted wires that do not require the application of this rotational force.

Further, according to the twisted wire manufacturing device of the second invention, rotation is automatically given to each cable by the force of pulling out the twisted wire from the device due to the action of the conical sesame, making it possible to easily manufacture rice)%lil. It is possible to provide a hand-held twisted wire manufacturing device that is easy to use on-site.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram of the manufacturing method in a conventional twisted wire manufacturing factory, Fig. 2 is a schematic explanatory diagram of the twisted wire manufacturing method on site, and Figs. 3 to 6 explain the twisted wire manufacturing method of the present invention. 7 and 8 are schematic perspective views of the twist wire manufacturing device of the present invention, and FIG. 9 is a schematic diagram illustrating the principle of the twisted wire manufacturing device of the present invention, and FIG. 9 shows an embodiment of the twisted wire manufacturing device of the present invention. 10 is a plan view of FIG. 9, and FIG. 11 is a perspective view showing the function of the guide 30 provided on the conical separator 22 in FIG. 10. 1... Cable bobbin, 2... Cable, 3...
Guide, 4... Guide hole, 5... Twisted wire, 11
... Rigid cable, 12 ... Highly flexible cable, 1
3... Guide, 14... Guide hole, 15... Cable, 21... Roller, 22... Cone, 23...
Handle, 24...Shaft, 25.26...Gear, 27...Shaft, 28.29...Bevel gear, 3
0...Guide, 31...Center shaft, 32...Guide hole, 33...Lock device. Agent Patent Attorney Tatsuyuki Unuma (14) Continued from page 1 0 Author: Takashi Umetsu, Hitachi University Mikacho Factory 0 Author: Nobuyuki Minami Sato, Hitachi University, Mikacho Factory, 5-2-1 Stocks Company Hitachi, Ltd. Omi 5-2-1
No. Hitachi, Ltd. Omiwa 0

Claims (1)

[Claims] 1. A method for manufacturing a twisted wire from an arbitrary number of cables, which involves joining the same ends of each cable and giving each cable the same direction of rotation of each cable axis. A twisted wire manufacturing method characterized in that each cable is automatically twisted together. 2. A device that manufactures twisted wire from any number of cables, in which two rollers press from both sides the part of the twisted wire that has been formed by twisting each cable, and the part that has not yet been twisted together. Each cable part has a truncated cone-shaped cone around which each cable is wound and in contact, and is provided at a radial position with respect to the twist wire, and each cone is rotated around its respective central axis. If possible, the small bottom side should face the twist line side, and each central axis should be gathered at one point on the twist line side, so that the twist line pressed by the roller is forcibly pulled out. As the roller rotates, each of the conical pieces rotates in the same direction, and as a result of this rotation, each cable rotates around the cable axis and is automatically twisted together. A twisted wire manufacturing device characterized by: