JPH0393116A - Production of coaxial flat cable - Google Patents

Abstract

PURPOSE:To save production processes by sending a plurality of coaxial core cables sent from a sending apparatus to an extruder in the drain wire direction through a guide roll, a collective long guide, and an insertion collective immediately before guide which are arranged in the same direction while without damaging a shield aluminum tape surface. CONSTITUTION:After passing a collective long guide 7, a plurality of coaxial core cables 1 are guided to an insertion collective immediately before guide 9 which is made of a fluorinated resin and has grooves 9a and pitches with prescribed shapes so as to be bound unitedly with nipple holes of an extruder. This insertion collective immediate before guide 9 guides a plurality of the coaxial core cables 1 in order and at the same time wrings again a shield aluminum tape which is under coiled condition and slightly opened from the core cables during the tape passes through the grooves 9a. In this way, collective extrusion can be carried out and some processes are eliminated.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a method of manufacturing a coaxial flat cable. [Prior Art 1] A conventional method for manufacturing a coaxial flat cable is shown in FIG. 5, for example. This involves extruding and coating multiple coaxial core cables 1 one by one in a rectangular shape while maintaining the drain soyer direction uniformly (see the same figure (opening)).
Thereafter, each of these cables is aligned and heat-sealed to form a flat cable to produce the coaxial flat cable 2 (see figure (A)). [Problems to be Solved by the Invention] The above-mentioned conventional technology is The coaxial core cables sent out from the manufacturer are extruded one by one into a rectangular shape and then fused together.
It was essential that the process be diverse. In addition, in order to extrude all multiple coaxial core cables at once, it is necessary to maintain the drain wire direction at all times, to avoid damaging the shield aluminum tape of all coaxial core cables, and to maintain the specified dimensions of the product. It was a challenge. The present invention has been made in view of the above points, and it is an object of the present invention to provide a method of manufacturing a coaxial flat cable that allows the manufacturing process to be significantly simplified. [Means for Solving the Problems] The above object is to provide a delivery device having a plurality of bobbins, a turn groove roll corresponding to the number of bobbins, a turn groove roll, a guide groove roll rearranged at predetermined intervals, and a guide groove roll arranged at predetermined intervals. A batch long guide placed between the grooved rolls and a batch insertion guide placed in front of the extruder are provided, drain wires are placed vertically on each of the delivery devices, and a coaxial core cable wrapped with shield aluminum tape is wound around the winding. The turned groove roll, the turn groove roll,
Insert it through one guide groove roll into a collective long guide having multiple grooves and pitches of a predetermined shape, align the drain wire direction of the multiple coaxial core cables in the predetermined h direction with the collective long guide, stabilize it and prevent it from changing. Next, the plurality of coaxial core cables with the direction of the drain wire stabilized in one direction are passed through the other guide groove 0-1 to the guide immediately before insertion, which has a predetermined groove shape and pitch that can be integrated with the nipple hole of the extruder. By guiding and narrowing the shield aluminum tape, inserting a plurality of coaxial cables with the shield aluminum tape into an extruder and physically covering them with an insulator to produce a flat cable. , achieved. [Function] Since the above means is provided, it is possible to simultaneously extrude a plurality of coaxial core cables at once, and there is no need to individually extrude a plurality of coaxial core cables into rectangular shapes and heat-seal them as in the past. [Example] The present invention will be described below based on the illustrated example. An embodiment of the present invention is shown in FIGS. 1-4. It should be noted that the same parts as in the prior art are given the same reference numerals, and therefore their explanations will be omitted. In this embodiment, a delivery device 3 having a plurality of bobbins, a turn bobbin 4 according to the number of bobbins, a turn groove groove roll 5, and a turn groove roll 5 are arranged at predetermined intervals.

[The placed guide lio-ru f3a
, 5b, a batch long guide 7 disposed between the guide groove rolls 6a and 6b, and a guide 9 immediately before the insertion batch and batch placed in front of the extruder 8. Then, the drain wires are placed vertically on each of the sending devices 3, and the coaxial core cables 1 wrapped with shield aluminum tape are wound around the coaxial core cables 1 and 7.
Cable 1 respectively turn pulley 4, turn r! 40-roll 5 and one full guide roll 6a, and insert it into a collective long guide 7 having a plurality of grooves and pitches of a predetermined shape. A collective long guide 7 aligns the drain wire directions of a plurality of coaxial core cables 1 in a predetermined direction to stabilize them and prevent them from changing. Next, the plurality of coaxial core cables 1 with the direction of the drain wire stabilized in one direction are passed through the other guide groove roll 6b to an insertion batch immediately before guide having a predetermined groove shape and pitch that can be integrated with the nipple hole of the extruder 8. 9 to narrow down the shield aluminum tape. A plurality of coaxial core cables 1 made of this shielded aluminum tape were inserted into an extruder 8, and an insulator was coated and molded to form a flat cable 2a by IJ construction. By doing this, it is possible to simultaneously extrude a plurality of coaxial core cables 1 in bulk, eliminating the need for extruding a plurality of coaxial core cables 1 individually into a rectangular shape and heat-sealing them as in the past. It is possible to obtain a method of manufacturing the coaxial flat cable 2a that allows the manufacturing process to be significantly simplified. That is, an egg-shaped coaxial core cable 1 with a drain wire arranged vertically and wrapped with a shield aluminum tape is wound around a sending device 3, and a turnbooth 4 corresponding to the number of bobbins is arranged above it. There is. A turn groove roll 5 and guide groove rolls 6a, 6b for guiding the egg-shaped coaxial core cable 1 are provided at the rear stage of the turnboo 4.
are provided at a predetermined pitch. At the rear stage of these groove grooves 5.6a, the direction of the drain wires of the egg-shaped coaxial core cable 1 containing a plurality of drain wires is made uniform and stable, and then the direction of the drain wires is twisted so that the direction of the drain wires does not change. Set up a long guide 7 for attaching. As shown in Fig. 2, this collective long guide 7 is made of heavy brass (see Fig. 2(a)), and has a predetermined bit T.
It has a plurality of predetermined grooves 7a (see figure (opening)) to prevent damage to the shield aluminum tape and to prevent the drain wire direction from changing. As shown in the figure, there is a groove 9a of a predetermined shape that can be integrated with the nipple hole of the extruder 8 (see the figure ([ ])), a guide 9 just before the insertion made of fluororesin with a pitch ( A plurality of coaxial core cables 1 are guided as shown in the same figure (see A).
In addition to guiding the alignment, the wound state of the seed aluminium, which is slightly open from the material surface, is narrowed again while sliding in the groove 98. A plurality of coaxial cables 1 that have passed through such multi-stage guides 7 and 9 are shaped and coated with insulation using extrusion R8 nipples and dies to meet product standards, and are manufactured into products. Coaxial flat cable 2a (4th
(see figure) is the cooling water tank 10. It passes through a turn roll 11 and is wound up by a winding machine 12. As described above, according to this embodiment, it is possible to coaxially press the coaxial core cables all at once without extruding each coaxial core cable individually into a rectangular shape, and it is possible to greatly simplify the process. [Effects of the Invention] As described above, according to the present invention, a plurality of coaxial core cables sent out from a sending device are aligned in the same direction in the direction of the drain wire without damaging the surface of the shield aluminum tape using the guide roll having grooves. Since the cables are fed into the extruder through a long guide, a long guide, and a guide immediately before insertion, multiple coaxial core cables can be extruded at the same time. It is possible to obtain a method of manufacturing a coaxial flat cable that eliminates the need for fusion bonding and can greatly simplify the manufacturing process.

[Brief explanation of the drawings] Fig. 1 is an explanatory diagram showing a production line of an embodiment of the coaxial flat cable production method of the present invention, and Figs. (
A) is a perspective view, (opening) is a front view showing the groove shape, and Fig. 3 (
A) and (opening) show the guide immediately before the insertion of the same embodiment, (A) is a perspective view, (opening) is a front view showing the groove shape, and Fig. 4 shows the coaxial flat cable according to the same embodiment. 7J explanatory diagram, Figure 5 (A), (I]) shows a coaxial flat cable according to an example of the conventional coaxial flat cable manufacturing method. is an explanatory diagram showing a state in which each tree is extruded into a rectangular shape. 5a, : coaxial core cable, double coaxial flat cable, : feeding device, : turn groove roll, : turn groove [1-ru, : guide groove roll, : batch gating guide, : extruder, : guide just before batch insertion. Akimeji 4th Toki 5th

Claims (1)

[Claims] 1. A delivery device having a plurality of bobbins, turn pulleys corresponding to the number of bobbins, turn groove rolls, guide full rolls arranged at predetermined intervals, a collective long guide placed between the guide groove rolls, and the front of the extruder. A drain wire is placed vertically on each of the delivery devices, a coaxial core cable wrapped with shield aluminum tape is wound, and the wound coaxial core cables are connected to the turn pulley and turn groove respectively. A roll, one guide groove roll is inserted into the collective long guide having a plurality of grooves of a predetermined shape and a pitch, and the direction of the drain wires of the plurality of coaxial core cables is aligned in a predetermined direction in the collective long guide, stabilized, and changed. a predetermined groove shape that allows a plurality of coaxial core cables with the drain wire direction stabilized in one direction to be integrated with the nipple hole of the extruder through the other guide groove roll;
The shield aluminum tape is guided through the guide immediately before the insertion with a pitch, and the plurality of coaxial core cables with the shield aluminum tape squeezed are inserted into an extruder, and the coaxial core cables are coated with an insulator and molded into a coaxial flat. A method for manufacturing a coaxial flat cable, characterized by manufacturing a cable.