JP2608615B2 - Manufacturing method of tape electric wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to a tape electric wire used for internal wiring of an electronic device and a method for manufacturing the same.

[Prior art]

The tape electric wire is used for connection between printed wiring boards in an electronic device. Tape wires are used not only for connection between printed wiring boards in a one-to-one relationship, but also for branch connection from one printed wiring board to a plurality of printed wiring boards. The distance from each printed wiring board at the branch destination is not always the same. Therefore, when a tape wire having a plurality of branch cables 2 and 3 having the same length is used like the tape wire 1 shown in FIG. 5, the branch cable used for connection to the printed wiring board having a short distance is used. The length must be excessive, and the problem arises of how to deal with the slack inevitably occurring in the excess in a limited space between the printed wiring boards in the equipment.

[Problems to be solved by the invention]

Therefore, as shown in FIG. 6, it is necessary to use tape wires 1 'each having a branch cable 2' or 3 'formed to a required length. The technology to produce it has not been developed yet. That is, as a method of manufacturing a tape wire of a predetermined length, a method of intermittently intersecting a blade with a long tape wire that runs continuously is generally used. Although the tape wire can be manufactured, the sixth
The tape wire shown in the figure cannot be manufactured, and the method of integrating two tape wires cut in advance to lengths corresponding to the branch portions 2 'and 3' has a problem that production efficiency is reduced. Was. The present invention has been proposed in view of the above circumstances, and has as its object to efficiently produce a tape wire having a plurality of branches having different lengths.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides a plurality of core wires arranged in parallel with each other intermittently sandwiched by a pair of insulating sheets, and the holding lengths of the insulating sheets are mutually different. A step of pulling a plurality of different long cables in the longitudinal direction in the same plane, and individually operating the pulling means to detect a terminal of the insulating sheet on the upstream side in the pulling direction of the long cable and align it. A step of attaching one reinforcing plate along the arrangement direction of the long cables to the upstream terminal of the plurality of long cables aligned with each other over each of the long cables; and Cutting a plurality of attached long cables in the vicinity of the upstream end of the reinforcing plate to produce a tape electric wire.

[Action]

According to the method of the present invention, by feeding each long cable individually, the terminal portion is aligned, and a reinforcing plate is attached to this terminal portion, thereby providing a tape wire having branches having different lengths from each other. , And by cutting at the end of the reinforcing plate, individually independent branch tape wires can be obtained. In this case, in advance, a plurality of long cables in which the core wire is intermittently sandwiched by insulating sheets having different lengths are manufactured, and the upstream side terminals of the insulating sheets are detected and aligned. Positioning can be performed by efficiently using the spacing between the insulating sheets. In addition, since the ends of the insulating sheet on the upstream side in the take-up direction are aligned and cut, the waste (cut-out waste) corresponding to the difference in the length despite the combinations having different lengths is used. ) Need not be formed.

【Example】

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, the structure of a tape electric wire produced by applying the present invention will be described with reference to FIG. The tape electric wire 1A is integrated by attaching a common reinforcing plate 11 to one end of a first branch cable 10A and a second branch cable 10B having different lengths, and integrating the respective branch cables 10A and 10B. Transparent reinforcing plate at the other end of each
By attaching 12A and 12B, each is reinforced independently. When manufacturing the tape electric wire 1A having the above structure, first, the branch cables 10A and 10B are manufactured continuously. That is, as shown in FIG. 2, a plurality of long core wires 13 are arranged in parallel with each other and intermittently sandwiched by insulating sheets 14A and 14B (or an insulating sheet continuously adhered). By intermittently peeling off), a long tape wire can be obtained. As a result,
Insulation of the length of La or Lb, respectively, at intervals of twice the length a to which the core wire 13 is to be drawn out (the length of a may be the same or different in both branch cables) Long branch cables 10A and 10B (hereinafter referred to as long cables) to which the sheets 14A and 14B are attached are obtained. Then, the long cables 20A and 20B thus obtained are placed on the same line as the line to which the insulating sheets 14A and 14B are attached, or on a different line, and the insulating sheets at the respective distal ends are provided. It is in a state where the reinforcing plates 12A and 12B are stuck respectively over the 14A and 14B and the core wire 13,
It is brought to the processing step described later. Next, an apparatus for manufacturing the tape electric wire shown in FIG. 3 will be described with reference to FIG. Reference numeral 20A denotes a long cable corresponding to the branch cable 10A, which is wound in a roll shape. Reference numeral 20B denotes a long cable corresponding to the branch cable 10B, which is wound in a roll shape. These long cables 20A ・ 2
0B are displaced from each other in the axial direction (direction orthogonal to the paper surface of FIG. 1) in the same plane. These rolls are pulled by feed rolls 21A and 21B, respectively, and are aligned on the same plane (arranged as shown in FIG. 2) by guide rolls 22. The feed rolls 21A and 21B are each driven by a motor capable of accurate positioning such as a pulse motor and a servomotor, and by controlling these motors by a terminal detection signal of the terminal sensor 23, It is controlled so as to send the long cable by a predetermined amount. On the downstream side of the guide roll 22, the branch cable 10A
A terminal sensor 23 is provided to detect the passage of the end portions (front end or rear end) of the insulating tapes 14A and 14B of 10B based on the presence or absence of light transmission.
An image processing device 24 for obtaining image information used for positioning in the width direction of 10B is provided. Further, a press device 25 for attaching the reinforcing plate 11 to the terminals of the branch cables 10A and 10B is provided downstream of the image processing device 24. A take-up roll 26 is provided downstream of the press device 2. The take-up rolls 26 are divided in the axial direction (or are made into separate rolls) so that the branch cables 10A and 10B can be individually pinched and pulled. The reinforcing plate affixed by the above mechanism has a uniform width dimension by being cut in the longitudinal direction by the slitter 27, and is further cut in the width direction by intersecting the cutters 28, so that one tape at a time is obtained. It is to be completed as an electric wire. A description will be given of the operation of the apparatus configured as described above and a method of manufacturing a tape electric wire using the apparatus. ◎ Step 1 The feed rolls 21A and 21B are individually driven to feed the two long cables 20A and 20B in the direction of the arrow in FIG. In this case, the long cable 20B corresponding to the short branch cable 10B
Of course may be lower than the feed speed of the long cable 20A corresponding to the long branch cable 10A. ◎ Step 2 Each branch cable 10A for both long cables 20A and 20B
On the condition that the passage of the terminal on the rear side of 10B is detected by the terminal sensor 23, the taking-up roll 26A and the feeding rolls 21A and 21B are stopped, respectively,
With the rear ends of the pair of branch cables 10A and 10B aligned, both long cables 20A and 20B stop. The terminal sensor 23
The determination of a signal change from OFF at the front end to ON at the rear end, or ON after OFF for a predetermined time (continuous over the period during which the insulating sheet passes) It is determined by detection. Further, by controlling the timing from the detection of the trailing end to the stop of the pickup, the two long cables 20A and 20B can be stopped at a predetermined position on the line, specifically, at a position corresponding to the image processing device 24. it can. ◎ Step 3 By adjusting the position of the two long cables 20A and 20B in the width direction based on the image cable obtained from the processing device 24, one set of branch cables 10A and 10B is positioned as shown in FIG. Be matched. That is, the long cables 20A and 20B are moved in the width direction so that the image matches the plane shape shown in FIG. ◎ Step 4 After aligning the pair of branch cables 10A and 10B in both the length direction and the width direction by the above steps,
Both long cables 20A ・ 2 by feeding rolls 21A ・ 21B
0B is fed by the same distance, and the end portion is positioned at the reinforcing plate attaching position in the press device 25 (the position where the rear end of the core wire 13 coincides with the rear end of the reinforcing plate 11). In addition, long cable 20A ・ 2
The feed amount of 0B can be controlled by supplying the number of pulses calculated from a known value of the distance between the image processing device 24 and the press device 25 to a pulse motor as a drive source of the feed rolls 21A and 21B. ◎ Process 5 Press the reinforcing plate 11 into each branch cable 10A by the press device 25
・ Attach and fix at a predetermined position on 10B. Note that, in the case of the embodiment, the rear end of the reinforcing plate 11 and the rear end of the core wire 13 are aligned so that they match.However, when the front end of the core wire 13 is to protrude from the rear end of the reinforcing plate 11, The stop position of the long cables 20A and 20B may be set slightly upstream. Step 6 The long cables 20A and 20B integrated by the attachment of the reinforcing plate 11 pass through the slitter 27 to form the ears of the insulating sheets 14A and 14B or the ears of the reinforcing plate 11 (FIG. 2). (Indicated by the dashed line) is cut off, and the insulating sheet 14
A position away from the rear end of A / 14B by distance a (usually core 13
The center of the exposed portion of the cutter 28 is taken up by the take-up roll 26 to a position where it is aligned with the cutter 28. At this position, the cutter 28
By intersecting with each other, cape wires having different lengths of branch cables 10A and 10B as shown in FIG. 3 can be obtained. In the above embodiment, the case where two branches having different lengths are provided has been described. However, it is needless to say that the technology of the present application can be applied to a case where more branches are provided.

【The invention's effect】

As is clear from the above description, in the manufacturing method of the present invention, a plurality of long cables in which the core wire is intermittently interposed between insulating sheets having different lengths are manufactured in advance, and the upstream side of the insulating sheet is manufactured. Since the positioning is performed by detecting the side terminals, the positioning can be performed by efficiently using the interval between the insulating sheets. Furthermore, since the ends of the insulating sheet on the upstream side in the take-up direction are aligned and cut, the waste material corresponding to the difference in the length of the insulating sheet despite the combination having the different length is used. There is no need to form (cut waste), the long cable can be effectively used over the entire length, and the cable can be easily manufactured on a continuous production line. In addition, there is an effect that the cost can be reduced by reducing the amount of waste.

[Brief description of the drawings]

1 to 4 show one embodiment of the present invention.
1 is a side view of the manufacturing apparatus, FIG. 2 is a plan view showing the arrangement of long cables, FIG. 3 is a plan view of a tape wire, FIG. 4 is a longitudinal sectional view of a terminal portion of the tape wire, FIG. The figure is a plan view of a conventional example of a tape wire, and FIG. 6 is a plan view of another conventional example of a tape wire. 10A ・ 10B …… Branch cable, 11 …… Reinforcement plate, 12A ・ 12B…
… Reinforcing plate, 13… Core wire, 14A ・ 14B …… Insulating sheet, 20A
・ 20B …… Long cable, 21A ・ 21B …… Sending roll, 22 …… Guide roll, 23 …… Terminal sensor, 25 …… Press device, 26 …… Taking roll, 27 …… Slitter, 28…
... Cutter.

Claims (1)

(57) [Claims] 1. A plurality of long cables each having a plurality of core wires arranged in parallel with each other intermittently interposed between a pair of insulating sheets, and having different lengths interposed by the insulating sheets. A step of individually pulling in the same plane in the longitudinal direction, and a step of individually operating the pulling means to detect the end of the insulating sheet on the upstream side in the pulling direction of the long cable and aligning the same in the length direction. Attaching one reinforcing plate along the arrangement direction of these long cables to each of the upstream terminals of the plurality of long cables aligned with each other over each of the long cables; and attaching the reinforcing plate. Cutting the plurality of long cables in the vicinity of the terminal on the upstream side of the reinforcing plate.