JPS5824882B2 - Manufacturing method of flat cable - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel method for manufacturing a flat cable to which a one-touch connector can be applied and which has excellent electrical characteristics such as induced current between cores.

In order to apply a one-touch connector to a flat cable, it is necessary to arrange the cores in parallel, but in this case, an induced current is generated between the cores, resulting in poor electrical characteristics.

On the other hand, in order to prevent induction between the cores, it is sufficient to twist the cores in pairs, but if the cores are twisted in pairs, the one-touch connector cannot be applied, and the terminal processing work becomes troublesome.

As a flat cable that satisfies both of these contradictory characteristics, a cable has been proposed in which a pair of cores are twisted in pairs in the longitudinal direction of the cable, and twisted portions and non-twisted portions are alternately provided.

Conventionally, in the twisting section of this type of flat goople, a pair of cores were twisted in one direction, either left-handed or right-handed, so a complicated mechanism was required for the sending machine that supplied a large number of cores to the twisting machine. It was necessary to provide a twisting device.

Therefore, the manufacturing equipment for flat cables is expensive, and since the cables manufactured by this equipment have a constant twist direction, a small amount of induced current is generated between each core, resulting in inductive loss. There was a problem.

An object of the present invention is to provide a manufacturing method capable of manufacturing a high-performance flat cable using a simple cable sending machine without a twisting device. The object of the present invention is to configure a method for manufacturing a flat cable in which right-twisted portions (hereinafter referred to as S-twisted portions) and left-handed twisted portions (hereinafter referred to as Z-twisted portions) are alternately formed with parallel cable portions in between.

FIG. 1 is a plan view illustrating a flat cable manufacturing method and its process, which is an embodiment of the present invention.
The wire cores) 3 are supplied from the feeder 10 to the collecting guide plate 12 and enter the twist pairing device 14 where they are aligned.

A large number of cables flowing out of the twist pair device 14 form twisted core pairs in which an S twist section 4, a parallel section 6, and a Z twist section 5 are arranged in this order.

Such a group of twisted cores passes through the rows 27 and is connected to the bonding device 16.
The parallel portion 60 is bonded with an adhesive and exits through the row 27 again.

A webbing band 19 is adhered to the twisted portion of the twisted pair core group to which the parallel portion 6 is adhered in this way in the blind manufacturing device 18 and is wound up by the winding device 20 through the rollers 7.

FIG. 2 is a perspective view showing the area from the feeder shown in FIG. 1 to the entrance of the bonding device, and the same parts as in FIG. 1 are given the same reference numerals.

This feeder 10 is a simple device in which a large number of bobbins 8 on which cores 3 are wound are rotatably attached, and the cores fed out by this are passed through a plurality of holes on a horizontal line provided in a collection guide plate 12. It passes through a plurality of dies of the twisting device 14 and is twisted.

This pair twisting device 14 consists of a die having two passage holes through which the pair of cores pass,
After twisting, the yarn is twisted for 1 time, followed by Z twist, then 1 time for average twist, and then S twist again.

For example, the dies are interlocked with adjacent ones and are interlocked to rotate in opposite directions. Therefore, the adjacent pair of cores of the paired twisted cores are paired so that they have twisted portions twisted in different directions. .

be done.

When leaving the twisting device 14, the twisted portions and the parallel portions are adjusted by the flexible rollers 15 so that they are aligned and sent to the row 27 of the bonding device 16.

FIG. 3 is a plan view of a flat cable manufactured by the flat cable manufacturing apparatus shown in FIGS. 1 and 2. FIG.

The pair of cores 3 have the above-mentioned S-twisted part 4, parallel part 6, Z-twisted part 5, and parallel part 6 in this order, and the pair of cores 3 next to it have the two-twisted part 5, parallel part 6, S Twisted section 4 and parallel section 6
The order is as follows.

Furthermore, a blind band 19 is bonded to each twisted portion by a blind manufacturing device 18, and each parallel portion 6 is bonded to a blind band 19 by a bonding device 1.
6 to form a bonded portion -17.

Therefore, this flat cable has a good overall shape and has high commercial value.

FIG. 4 is an enlarged cross-sectional view taken along line A-A' of the parallel portion in FIG.

A plurality of cores 3 made of conductors 1 and insulators 2 are arranged in a row at equal intervals, and the insulators 2 are bonded to each other.

FIG. 5 is an enlarged cross-sectional view taken along line B-B' of the twisted part in FIG.
It is shown that adjacent twisted pair cores 3 are connected by a blind band 19, while one is S-twisted and the other is two-twisted.

The blind cable produced in this way is S-twisted,
Since the Z-twisted pair cores are adjacent to each other, the induction loss of the current flowing through this blind cable is small, and the electrical signal transmitted by this flat cable is stable.

Further, since the twisted portions of this flat cable cancel out the deformation due to the direction of twisting, the shape is uniform and no stress is applied to the core during wiring.

Furthermore, as shown in Figure 2, the feeder that feeds out this flat cable has the advantage that the bobbin can be simply installed by simply having a rod, so there is no need to provide a twisting device, and the equipment cost for the feeder is extremely low. This improves mass production of flat cables.

As described above, the flat cable manufacturing method of this embodiment has the effect that a high-performance flat cable can be obtained with inexpensive equipment without the need for a twisting device.

The length of the twisted part and parallel part of the flat cable is 1
The width of the flat cable and the number of cores can be easily changed according to the needs by changing the number of multi-pair cores.

The flat cable manufacturing method of the present invention has the advantage that a high-performance flat cable can be manufactured using a simple cable feeder without requiring a complicated twisting device.

[Brief explanation of the drawing]

Fig. 1 is a plan view illustrating a flat cable manufacturing method and its process according to an embodiment of the present invention, Fig. 2 is a perspective view showing the process from the sending machine shown in Fig. 1 to the entrance of the bonding device, and Fig. 3 is A plan view of a flat cable made by the flat cable manufacturing method shown in Figs. 1 and 2, Fig. 4 is an enlarged cross-sectional view taken along A-A' of the parallel part in Fig. 3, and Fig. 5 is a plan view of the flat cable manufactured by the flat cable manufacturing method shown in Fig. 3. It is a BB' cross-sectional enlarged view of a joint part. In the figure, 3 is the core, 4 and 5 are the twisted parts, 6 is the parallel part,
8 is a bobbin, 10 is a feeder, 12 is a collecting guide plate, 14
is a twisted pair device.

Claims (1)

[Claims] 1. A feeding machine that pulls out cores from a plurality of bobbins wound with cores, a gathering guide plate that allows the cores fed out from this feeding machine to pass through and align them, and a pair that twists the cores aligned by this gathering guide plate. This twisting device consists of a twisting device.
It consists of a mace with two passage holes through which a pair of cores pass, and this die repeats the operations of clockwise rotation, stop, counterclockwise rotation, and stop, and is interlocked so that the rotation direction of the adjacent die is reversed. A method for manufacturing a flat cable in which twisted portions and non-twisted portions are alternately provided in the longitudinal direction of the cable.