JPH01134814A - Manufacture of flat cable formed with flat conductor - Google Patents

Abstract

PURPOSE:To obtain a flat cable by arranging flat conductors for guide which have the same widths and higher lights than flat conductors on both sides of the conductors in parallel and laminating an insulating film tape collectively and guiding a crest part with a roller provided with a groove so as to cut ears. CONSTITUTION:Plural flat conductors are arranged in parallel, and flat conductors 7 for guide which have the same widths as the constituent conductors and higher heights than them, having rectangular cross section are arranged on both sides, and then the conductor row and the guide conductors 7 are laminated with an insulating film tape 3 en bloc. When the part of guide conductor 7 is engaged with gap between projections 4a in the circumferential direction of a guide roller 4, it is guided correctly and a cable doesn't meander. Accordingly, ears can be cut accurately and inferiority is not generated.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to a method of manufacturing a flat conductor flat cable.

[Technical background of the invention and its problems] A flat conductor flat cable 1 includes a plurality of conductors 2 having a thin rectangular cross section arranged in parallel, as shown in FIG.

Laminate insulating film tape 3 on both sides of this conductor row.
In order to avoid having to perform lamination with high precision during manufacturing, an insulating film tape that is wider than the width of the product is laminated and the edges are cut in the final process. We are trying to make it into a product.

When cutting the edges, circumferential protrusions 4 are arranged in the axial direction at a pitch equal to the conductor arrangement pitch, as shown in
The flat conductor cable 1 is guided by a guide roller 4 having a diameter of 1.a, and the edges are cut by cutters 5 provided at both ends of the guide roller 4 (only the cutter at one end is shown).

By the way, the guide roller 4 is located in the valley between the protrusions 4a.
The flat conductor engages and guides the ridges formed on the surface of the flat cable 1. Therefore, the height of the mountain portion is not so large, and the guide roller 4 tends to insufficiently guide the cable, causing the cable to meander and cut the edge accurately, resulting in product defects. be.

FIG. 4 shows a manufacturing method devised to eliminate the above-mentioned conventional drawbacks. In this manufacturing method, the conductor 2
Guide round wires 5 are arranged on both sides of a conductor row formed by parallel conductor rows, and the conductor row and guide round wires are laminated together with an insulating film tape, and the cable surface formed by the round wires 5 is The crests are engaged with V grooves provided at both ends of the guide roller 4 to guide the guide roller (a guide groove for a flat conductor is insufficient for guiding). According to this manufacturing method, the cable can be guided reliably, and there is no risk of defective edge cutting or product defects due to meandering of the cable.

However, since the V-groove that guides the round wire peaks is provided at both ends of the guide roller, in order to guide cables with different numbers of cores using the same guide roller, cables with a small number of cores must be used. However, the round guide wire must be inserted into the cable using an insulating film tape with a width equal to the axial length of the roller, resulting in wasted material.

[Purpose of the invention] The present invention has been made based on the above circumstances.

The purpose of the present invention is to provide a method for manufacturing a flat conductor cable in which edge cutting can be performed accurately, there is no risk of product defects, and material waste can be minimized.

[Summary of the Invention] The method for manufacturing a flat conductor flat cable of the present invention includes a conductor row formed by paralleling a plurality of flat conductors, on both sides of which a guide flat conductor having the same width and high height as the flat conductor is placed. These are placed together and laminated with an insulating film tape, and this is guided by a guide roller having a guide groove that guides the peaks on the cable surface formed by the flat conductor. It is characterized by cutting.

[Embodiment of the Invention] FIG. 1 is a cross-sectional view of a semi-finished product in the first step of an embodiment of the invention. In this figure, a plurality of flat conductors 1
A flat guide conductor 7°7 having a rectangular cross-section and a large height, which is approximately equal in width to the single flat conductor, is arranged on both sides of the conductor row formed by paralleling the conductor row and the guide. The insulating film tape 3 is laminated on the flat conductor 7 all at once.

In the edge cutting process, a guide roller 4 as shown in FIG. 2 is used to guide the cable. The guide roller 4 has the same structure as the guide roller 4 shown in FIG.

Since the guide flat conductor 7 has a greater height than the flat conductor 2, the height of the peak formed on the cable surface is therefore greater than that formed by the flat conductor 2.

Therefore, the guide flat conductor 7 is inserted into the gap between the circumferential protrusions 4a.
If these parts are engaged and guided by the guide roller 4 having the above structure, accurate guidance will be achieved and the cable will not meander, so the edge will be cut accurately and there will be no risk of product defects.

In the present invention, since the guide flat conductor 7 has the same width as the flat conductor 2, it can be guided using the guide groove for the current-carrying flat conductor of the cable. Therefore, even when cutting edges using guide rollers to guide cables with a large number of cores,
There is no need for lamination with wide insulating film tape, minimizing material waste.

[Effects of the Invention] As is clear from the above, in the manufacturing method of the present invention, the cable is reliably guided by the guiding flat conductor, so product defects due to meandering of the cable do not occur. In addition, since the flat guide conductor and the cable current conductor have rectangular cross sections with equal widths, the guide groove for the current conductor is the same as the guide groove for the guide flat conductor. Even when the same guide roller guides cables with different numbers of cores, material waste can be minimized.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a semi-finished product according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the embodiment, FIG. 3 is a cross-sectional view for explaining the drawbacks of an example of a conventional manufacturing method, and FIG. The figure is a cross-sectional view for explaining the drawbacks of another example of the conventional manufacturing method. 1...Flat conductor flat cable 2...
...Flat conductor 3...Insulating film tape 4
...Guide roller 4a ...Protrusion 5
・・・・・・Cutter 6・・・Flat conductor for guide Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] Placing guide flat conductors having the same width and high height as the flat conductors on both sides of a conductor row formed by paralleling a plurality of flat conductors, laminating these together with an insulating film tape, and A method for manufacturing a flat conductor flat cable, characterized in that the edge is cut while the cable is guided and run by a guide roller having a guide groove that guides the ridges on the surface of the cable formed by the flat conductor.