JPH0433604Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a twist-flat cable of a type in which paired twisted parts and parallel arrangement parts are provided alternately in the length direction of the cable, and in particular, the pitch of the parallel arrangement part is variable. The present invention relates to an advantageous manufacturing device for twisted flat cables.

[Prior art] Twisted flat cables have twisted pair parts and parallel arrangement parts of insulated wires alternately in the length direction of the cable. , terminal processing is extremely easy, and due to the presence of twisted pairs, it is used as a variety of cables with excellent crosstalk characteristics between adjacent pairs.

As an advantageous manufacturing device for the conventional twisted flat cable, the applicant of the present application had previously developed the
The manufacturing device disclosed in No. 47409 is proposed.

That is, two insulated wires are supplied, and a plurality of twisted wires are arranged, each rotating and stopping in one direction and repeating rotation and stopping in the opposite direction, and the twisting device is configured when stopped. an untwisting prevention device that moves an insulated wire to a fusion device while holding parallel parts of the insulated wire, and a fusion device that heat-seals the insulation of the insulated wire whose parallelism is maintained by the untwisting prevention device. This is a twisted flat cable manufacturing device.

[Problems to be solved by the invention] By the way, this conventional manufacturing equipment is designed as a cable manufacturing equipment in which the welding pitch of the parallel portion is constant, and the fork-shaped jig is fixed to the conveying chain at an even pitch. Cables were manufactured at this pitch.

Therefore, when manufacturing a twisted flat cable with a variable welding pitch tape, it was necessary to set the fork jig to a predetermined pitch each time.

That is, FIG. 2 is an explanatory diagram showing an example of a twisted flat cable of a variable welding pitch type with different welding pitches. In the figure, 9 is a cutting line, and the flat cable cut at the cutting line 9 is , cutting line 8
At the parallel welded parts 8 on both sides, a bulk pressure welding connector without peeling of insulation is attached and used as a wiring material. In this case, the pitch between the parallel welded parts is P ₅ .
Although a predetermined length is required, it is advantageous for the pitch _P5 between the parallel fused parts to be cut to be as short as possible to avoid waste of material.

In the case of conventional manufacturing methods, this pitch is constant, resulting in a lot of wasted material.

Furthermore, since the conveyance chain is endlessly connected, it has been impossible to achieve continuity at all pitches.

[Means for Solving the Problems] The purpose of the present invention is to eliminate the drawbacks of the prior art described above, and to achieve continuous variable fusion without requiring replacement of fork-shaped jigs and without stopping the device. It is an object of the present invention to provide an advantageous manufacturing device capable of manufacturing pitch twist flat cables.

In other words, the gist of the present invention is to provide a twisting device in which two insulated wires are supplied, a plurality of wires are arranged, and each twisting device repeatedly rotates and stops in synchronization, and when the twisting device stops, an untwisting prevention device that moves to a bonding device while holding the parallel portions of the insulated wires; and a bonding device that bonds at least the parallel arranged portions of the insulated wires whose parallelism is maintained by the untwisting prevention device. In the twisted flat cable manufacturing apparatus, the untwisting prevention device includes a fork-shaped jig, a conveyance chain for conveying the jig, a mounting device for attaching the fork-shaped jig to the conveyance chain, and a fork-shaped jig. The measuring device measures the conveyance distance of the preceding fork-shaped jig, and when the distance reaches the required pitch, a new fork-shaped jig is attached to the conveyance chain. The present invention relates to a twisted flat cable manufacturing apparatus characterized in that a fork-shaped jig is attached by a device and sequentially fed out onto a conveyance chain.

[Example] Next, an example of the manufacturing apparatus of the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is an explanatory diagram showing an embodiment of the variable fusion spliced pitch flat cable manufacturing apparatus of the present invention.
is a twisted pair device, in which two insulated wires are supplied and a plurality of wires are arranged, each of which rotates and stops in synchronization, thereby creating a flat structure in which twisted portions and parallel portions are sequentially arranged. A cable is manufactured, and the parallel portion is conveyed to the fusion device 7 while being kept parallel by an untwisting prevention device.

The untwisting prevention device has a U-shaped cross section and arranges insulated wires on the inner wall of the U-shape. After the parallel parts are fused with a heat fusion device,
It is designed to release the hold on the parallel part.

The required number of fork-shaped jigs 3 constituting this untwisting prevention device are prepared in an endlessly connected conveyor chain 4.
is attached to the conveyance chain 4 by the attachment device 1 and conveyed by the chain 4.

2 is a measuring device that measures the distance that the fork-shaped jig 3 conveys in the parallel part. When manufacturing a flat cable with fusion pitches P ₁ to _{P 4} as shown in the figure, the measuring device 2 When reaching P ₄ , the next new fork-shaped jig is mounted on the conveyance chain 4 by the mounting device 1.

Further, when the measuring device 2 reaches the fusion pitch _P3 , a new fork-shaped jig is sequentially installed to manufacture a predetermined twisted flat cable.

As described above, in the apparatus of this embodiment, the welding pitch can be freely changed by measuring the length with a measuring device and attaching a fork-shaped jig to the chain according to the required welding pitch.

The twist pair device 5 works in conjunction with the measuring device 2 to create a twisted pair portion and a parallel portion in the insulated wire. Preferably, the twist directions between adjacent pairs are opposite, and the pair is twisted with the parallel portion in between. It is preferable that the twist direction is reversed because it improves crosstalk characteristics.

In this embodiment, only a heat-sealing device was explained as the bonding device for the parallel parts, but bonding using adhesive,
Alternatively, a cable having a structure in which an insulating tape is pasted along the entire length of the cable may be used, and the present application should not be construed as being limited by this embodiment.

[Effects of the invention] According to the manufacturing apparatus of the invention as described above, it is possible to provide a twisted flat cable with a flexible welding pitch according to the user's use, and its practical value is There is something very big.

[Brief explanation of the drawing]

FIG. 1 is an explanatory view showing one embodiment of the manufacturing apparatus of the present invention, and FIG. 2 is an explanatory view showing an example of a twisted flat cable manufactured by this manufacturing apparatus. DESCRIPTION OF SYMBOLS 1...Fork-shaped jig installation device, 2... Measuring device, 3... Fork-shaped jig, 4... Conveyance chain, 5... Twisting device, 6... Twisting unit, 7... Fusion device , 8...parallel section, 9...cutting line.

Claims (1)

[Scope of utility model registration request] Two insulated wires were supplied, and a plurality of twisted wires were arranged, each repeating rotation and stop in synchronization, and the twisting device held a parallel portion of the insulated wire that was configured when stopped. In the twisted flat cable manufacturing apparatus, the twisted flat cable manufacturing apparatus comprises an untwisting prevention device that moves to a bonding device in a twisted state, and a bonding device that bonds at least a parallel portion of an insulated wire whose parallelism is maintained by the untwisting prevention device The return prevention device includes a fork-shaped jig, a conveyance chain for conveying the jig, a mounting device attached to the conveyance chain of the fork-shaped jig, and a measuring device for measuring the conveyance distance of the fork-shaped jig, The conveyance distance of the preceding fork-shaped jig is measured by a measuring device, and when the distance reaches the required pitch, a new fork-shaped jig is attached to the conveyance chain by the mounting device, and the fork-shaped jig is sequentially moved to the conveyance chain. A twist flat cable manufacturing device that is characterized by being fed out.