JPS6247328B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an advantageous method of manufacturing a shielded flat cable that can be connected all at once using a one-touch connector.

A connector called a one-touch connector is attracting attention as a connection method in which the connection is completed all at once by crimping the flat cable from the outside without stripping the insulation of the flat cable.

On the other hand, in flat cables, in order to improve electrical characteristics, a shield layer is provided for each insulated wire core.

However, flat cables in which a shield layer is provided for each insulated wire core have the disadvantage that one-touch connectors cannot be used.

In order to solve this drawback, a flat cable has been proposed in which the shield layer is peeled off at predetermined intervals along the length of the flat cable, and one-touch connectors are crimped onto the parts. By the way, when manufacturing this type of flat cable, the shielding layer is manually peeled off, or plastic tape with shielding layers pasted at predetermined intervals in the length direction is formed by longitudinally attaching it to the insulated wire core. It had been.

However, since the former method is manual, it is desirable to mechanize it, and in the latter method, even if the shield layer intermittent positions of each core are initially aligned,
As the working length becomes longer, the intermittent positions of the shield layer become unaligned, making it impossible to crimp the one-touch connector.

In view of the above-mentioned points, the present invention has been made with the aim of providing an advantageous manufacturing method for a flat cable that has a shield layer for each core and is capable of crimping a one-touch connector. In this method, a plastic tape with a shield layer provided intermittently in the length direction is simultaneously advanced against multiple insulated wire cores running in parallel, and the number of cores is increased in the length direction. The method of manufacturing a flat cable is characterized in that the wire core is longitudinally spliced and formed while being cut in accordance with the wire core.

Next, one embodiment of the manufacturing method of the present invention will be further described with reference to the accompanying drawings.

1 is an insulated wire core, and a plurality of wire cores are running in parallel at predetermined intervals in the direction of the arrow.

Reference numeral 2 denotes a plastic tape which runs simultaneously with the insulated wire core 1, and shield layers 3 are provided at predetermined intervals in the length direction.

The plastic tape 2 is cut into pieces corresponding to the number of wire cores in the length direction by a cutter 4 while the plastic tape 2 is being advanced, and after being cut, the plastic tape 2 is longitudinally attached to the insulated wire core 1 and formed. The wire core 1 on which the plastic tape 2 has been longitudinally spliced is then extruded by an extruder 5 to the outside of the wire core 1 to extrude a jacket 6 to insulate and integrate the wire core 1.

Here, the insulated wire core 1 is a conductor coated with an insulator by extrusion, and the conductor is a solid annealed copper wire,
Stranded wire, tin-plated annealed copper wire, tin-coated stranded wire, etc. are used, and polyethylene, vinyl chloride, etc. are used as the insulator.

Plastic tape 2 is polyethylene,
Polyester or the like is used, and the shield layer 3 attached to the plastic tape 2 is made of aluminum foil, copper foil, or the like.

Since the shield layer 3 is provided intermittently along the length of the cable, in this embodiment,
A metal wire 7 is attached vertically to the wire core 1, and the presence of the metal wire 7 forms a continuous shield layer in the length direction.

In this case, put plastic tape 2 on the metal wire 7 side.
Needless to say, make sure that the shield layer 3 attached to the surface is placed on the surface.

The jacket 6 is made of polyethylene, vinyl chloride, etc., but it is recommended to make a part of the jacket 6 transparent or to clearly mark the position so that the intermittent parts of the shield layer, that is, the crimping positions of the one-touch connectors can be seen. is preferred.

In the manufacturing method of this embodiment, the plastic tape to which the shield layer is attached is advanced while being cut, and is formed by vertically attaching it to the wire core, so that the shield layer is not dislocated intermittently and is continuous. It has the advantage of being able to be manufactured precisely.

According to the present invention constructed as described above, it is possible to continuously manufacture an advantageous flat cable in which each wire core is shielded and can be connected all at once using a one-touch connector, and its industrial value is high. There is something very big about it.

[Brief explanation of the drawing]

The accompanying drawings show an embodiment of the manufacturing method of the present invention, with FIG. 1 being an explanatory front view and FIG. 2 being an explanatory top view. 1: Insulated wire core, 2: Plastic tape, 3:
Shield layer, 4: cutter, 5: extruder, 6: jacket, 7: metal wire.

Claims (1)

[Claims] 1. A plastic tape with a shield layer provided intermittently in the length direction is simultaneously advanced against a plurality of insulated wire cores traveling in parallel, and the tape is made to match the number of wire cores in the length direction. A method for producing a flat cable, which comprises forming the cable vertically on the wire core while cutting the cable.