JPS6022456B2 - Manufacturing method of tape-shaped electric wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a tape-shaped electric wire in which a conductor is exposed at a terminal portion.

Conventionally, this type of manufacturing method involves: 1) placing multiple conductors in parallel and sending them out, 2 sending out a tape with windows on both sides, 3 overlapping the tapes with the windows aligned, and 4
There is a method to continuously manufacture tape-shaped electric wires by fusing them together and cutting them at the center of the 5-window (Hakama Kaisho 5
1-71979 etc.).

However, in this case it is very difficult to match the windows perfectly for the following reasons.

The tape is pulled from the winding side. Further, during fusing, the tape is heated to a temperature higher than the heat deformation temperature and is pressed by a heating roll. Therefore, during fusion, the tape can stretch, albeit slightly. In particular, tape with open windows tends to stretch. However, this growth
It does not occur exactly equally on the upper and lower tapes.

Due to roll slippage, etc., there is a difference in the elongation of the upper and lower tapes. This will cause the window to be misaligned. This discrepancy is
There is no problem since the amount is very small at first.

However, as the tape fusion progresses, it gradually accumulates and expands to a size that cannot be ignored. Therefore, a separate and complex control device is required to correct it.

The present invention solves the above problem by point-welding only the edges of the tapes at appropriate intervals immediately after overlapping the two tapes with their windows aligned.

Embodiment (FIG. 1) A case of manufacturing a tape-like electric wire 500 shown in the lower right corner of FIG. 1 will be described.

10 is a conductor.

20A and 20B are tapes.

This becomes the source of the insulator 200.

For example, thin polyester is used. The window raising device 301 raises the windows 22 at regular intervals in both of these areas. 36 is a guide roll.

At this portion, the conductor 10 and the tapes 20A and 20B are overlapped.

Then both windows 22 are brought into alignment. Immediately after leaving the guide roll, the two tapes 2 are welded together by means of a known spot welding device 38.
0 ears 24 are spot welded 26 at appropriate intervals. Then, the two tapes 20 and the conductor 10 are bonded by a fusing roll 40.
are fused together to form a continuous body 50 of tape-shaped electric wire.

The conductor 10 is then cut along the centerline 44 of the window 22.

Then, the slit 46 continuously cuts the edges 24 of the tape.

Then, tape-shaped electric wires 500 are formed continuously.

Note that 100 is a conductor and 20 is an insulator. remaining ears 2
4 is continuously wound on a winding roll 48. Effect of the invention '1-- Also in the case of the present invention, as in the case of the secondary, a difference may occur in the elongation of the upper and lower tapes during fusion.

However, since the two tapes are overlaid and then spot welded at appropriate intervals at the edges, the difference in elongation of the tapes is not integrated as in the conventional case.

The reason is that the difference in elongation of the tape is caused by the two
This is because it occurs only between locations (in the longitudinal direction of the tape) and does not affect anything beyond that point. Therefore, even if the window position shifts due to this difference in tape elongation, the shift is completely negligible.

Therefore, a control device for complicated window alignment is not required. ■
The area to be spot welded is the ear, and that part is removed later, so no scratches remain on the product.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an example of the manufacturing method of the present invention. IQ...Conductor, 20...Tape, 22...
Window, 24... Ear " 26... Spot welding, 38
... Spot welding device, 40 ... Fusing roll, 5
00... Tape-shaped electric wire. Figure 6

Claims (1)

[Claims] 1. A process of sending out two tapes with windows at predetermined intervals on both sides of the conductor that is arranged in parallel and sending out, and aligning the windows and overlapping them, and integrating the overlapping two tapes and the conductor. Immediately after the step of overlapping the tapes, the selvedges of the two tapes are separated at appropriate intervals. A method for manufacturing a tape-shaped electric wire, characterized by spot welding.