JPH01211812A - Manufacture of flat cable - Google Patents

Abstract

PURPOSE:To prevent wrinkles and peeling from being generated in bands even though insulating film bands with low strength are used by lining the insulating film bands with guide film bands and putting a conductor row between them so as to make pass through a roll bite. CONSTITUTION:A conductor row 2 is sent from the upper of the roll bite of laminate rolls 1, 1, and insulating film bands 3 and guide film bands 4 are sent from both sides of the conductor row 2. Window holes 7 are engraved on the bands 3, 3 in such a way that the positions agree with each other by cutout presses 8, 8 before the bands 3, 3 are lapped over the bands 4, 4. The bands 3, 3 are lapped over the bands 4, 4 in just front of the laminated rolls 1, 1, and the overlapped tape rows are sent to the roll bite of the rolls 1, 1 through auxiliary laminated rolls 9, 9. When they pass through the roll bite, the upper surfaces of both sides of the bands 4 are adhered to the lower surfaces of both sides of the bonds 3 so as to put the conductor row 2 between them and be heat-fused, and through a guide roller 11, the bands 4, 4 are peeled from the bands 3, 3 so as to become a flat cable 13.

Description

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

[Technical background of the invention and its problems] Flat cables are manufactured in a conventional manner. That is, a conductor row formed by arranging a plurality of core conductors on the same plane and an insulating film strip sandwiching the conductor row from both sides are fed into the roll bite of a pair of laminate rolls arranged facing each other. While passing through the roll bite, the above-mentioned king is heat-sealed to form a product. However, as an insulating film strip, PVC single film, PET/PVC
Film, Pet/adhesive film, Al/P
If an adhesive film or the like is used and its mechanical strength is insufficient, the necessary pack tension cannot be applied to the insulating film strip.

Due to the balance of the laminating rolls and the positions of the conductor rows, there was a risk that the insulating film strips would wrinkle or curl. In addition, in the case of flat cables that are cut into short lengths after being fabricated, conductor rows are cut into the insulating film strip before the insulating film strip enters the roll bit in order to form a conductor exposed portion for leading out the cable end. In this case, even if the mechanical strength of the insulating film strip itself is sufficient, its overall mechanical strength will be reduced, and as above This may cause wrinkles and blisters in the insulation film strips.

[Object of the invention] The present invention has been made based on the above circumstances, and even when an insulating film strip with low mechanical strength is used,
The object of the present invention is to provide a flat cable production method that can produce an insulating film strip without wrinkling or curling.

[Summary of the Invention] The flat cable manufacturing method of the present invention includes the steps of introducing a conductor row formed by arranging a plurality of core conductors in parallel on the same plane from above the roll bit of a pair of laminating rolls, and With the insulating film strip facing upward from the side of the cutting tool, a strip-shaped adhesive layer is provided on both sides of the insulating film strip and the surface that does not cause heat fusion thereto and faces the insulating film strip. a step of introducing a guide film strip formed by overlapping the film strips, a step of gluing the opposite edges of each of the film strips before entering the film row formed by overlapping each of the film strips onto the roll bit; It is characterized by comprising the steps of heat-sealing the insulating film strip across the conductor row while passing through the roll bite, and peeling off the guide film stationary from the insulating film strip after passing through the roll bite. do.

[Embodiments of the invention] FIG. 1 is a schematic perspective view of one embodiment of the present invention.

In this figure, a conductor row 2 consisting of a plurality of core conductors arranged in parallel on the same plane is introduced from above into the roll bite of a pair of laminating rolls 1, and 3. Insulating film strips from the side to the top. On the lower side, a tape row is introduced in which guide film strips 4 having the same width as the insulating film strips are overlapped. Note that this guide film strip 4.4 is the same as the insulating film strip 3.
．． 3 is made of a material that does not cause heat fusion, and on both sides of the surface facing the insulating film strip 3.3, a weak adhesive strip layer 4a, as shown in FIG. 2A, is provided. 4a is provided. In FIG. 1, 5 indicates a supply of the insulating film strip 3, and 6 indicates a supply of the guide film strip. Further, in the running path of the insulating film strip 3, a perforation press 8.8 is provided for punching a window hole 7 which is wider than the conductor row 2 and narrower than the insulating film strip 3. Furthermore, above each of the laminating rolls 1.1, as shown in FIG. 2B, there are auxiliary laminating rolls 9, 9 each having a small axis and located on both sides of the insulating film strip 3 passing through them. It is provided. Conductor row 2 passed through the roll bite of laminating roll 1.1
, an insulating film strip 3 which is sandwiched therebetween while passing through the roll bite, and a guide film strip 4.4 which has passed through the roll bite between the upper surface of the laminating roll 1.1 and the auxiliary laminating roll 9.9. The running path of the semi-finished product 10 is changed by approximately 90' by a guide roller 11 disposed below the laminating rolls 1,1.

It travels while being pulled by a winder or take-up machine (not shown).

On the downstream side of the guide roller 11, that is, on the winding machine or take-up machine side, there is a separator 12 equipped with two blades 12a whose cutting edges are in contact with the upper and lower surfaces of the semi-finished product 10 running as described above. is installed.

The flat I-cable manufacturing method of the present invention is carried out using the manufacturing apparatus having the above configuration as follows. First, the conductor row 2 is inserted into the roll bite of the laminating roll 1.1 from above.
is fed in, and an insulating film strip 3 and a guide film strip 4 are fed from both sides thereof with the insulating film strip 3 facing upward. In addition, insulating film strip 3
．． 3, before they are superimposed on the guide film strip 4.4, the apertures 7 are punched in phase by a press 8.8.

The insulating film strip 3.3, which has been provided with the windows 7.7 as described above, is superimposed on the guide film strip 4 immediately before the laminating roll 1.1.

The stacked tape row is fed into the roll bit of the laminating roll 1.1 via the auxiliary laminating roll 9.9. As shown in FIG. 2B, while the auxiliary laminating roll 9.9 and each corresponding laminating roll 1.1 are passing through the roll bite, the upper surface of the guide film strip 4 on both sides.

The lower surfaces of both sides of the insulating film strip 3 are adhered, and the insulating film strip 3.3 is heat-sealed with the conductor row 2 in between while the laminating roll 1.1 is passing through the roll bite.

The semi-finished product 10 obtained as described above is attached to the guide roller 1
1, the direction is changed by approximately 90@, and the vehicle is pulled by a winder (not shown) and runs. A separator 12 is installed downstream of the guide roller 11.
The cutting edges of the two blades 12a are brought into contact with the upper and lower surfaces of the semi-finished product 10. Therefore, at the start of manufacturing, etc., the tip of the guide film strip 4.4 is peeled off from the insulating film strips 3, 3, and the cutter 12a is placed between the two strips 3, 4.
If you keep the cutting edge of the machine facing the semi-finished product 1
As the cable 0 runs, the guide film strip 4 is automatically peeled off from the insulating film strip 3, and the semi-finished product that has passed through the separator 12 is turned into a flat cable 13 without any extra appendages.

In addition, the flat cable shown in the above example is
Cut approximately the center of each window hole 7 to make a short length, and
Connectors are attached to the conductor rows exposed in the section and used for wiring.

In the flat cable manufacturing method of the present invention explained above, the guide film strips 4 and 4 are attached to the insulating film strips 3 and 3.
Since the film rows pass through the roll bite with the film lined with It is possible to improve the balance of the positional relationship with the insulating film strips, etc., and the insulating film strips will not wrinkle or curl.

Note that the present invention is not limited to the above embodiments.

That is, the above embodiment is an example in which the present invention is applied to compensate for the decrease in mechanical strength due to the opening of the window holes 7, 7 in the insulating film strip 1.1. Needless to say, the present invention can also be applied to the production of flat cables using small insulating film strips.

[Effects of the Invention] As is clear from the above, according to the flat cable manufacturing method of the present invention, the insulating film strip having a window hole for end treatment during short length cutting is itself an insulating film with low mechanical strength. In the production of flat cables using materials with low mechanical strength such as film strips, it is possible to prevent wrinkles and curling of the insulating film strips, thereby improving product yield. Cost reduction can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of an embodiment of the present invention, FIG. 2A is a schematic cross-sectional view showing the relationship between the insulating film strip and the guide film strip, and FIG. 2B is a laminating roll and auxiliary laminate. It is a typical front view showing the relationship with a roll. 1... Lamination roll 2... Conductor row 3... Insulating film strip 4...
Guide film strip 4a...Adhesive layer 5.6
...Supply 7...Window hole 8...
...Koumei press 9...Auxiliary laminating roll 10...Semi-finished product 12...Separator 12a...Knife 13...Flat cable纂／Figure 2A 2nd section B

Claims (1)

[Claims] A step of introducing a conductor row consisting of a plurality of core conductors arranged in parallel on the same plane from above the roll bite of a pair of laminate rolls, and a step of introducing the conductor row from the side of the roll bite with the insulating film strip facing upward. Introducing an insulating film strip and a guide film strip that does not thermally bond with the insulating film strip and has a strip-shaped adhesive layer on both sides of the surface facing the insulating film strip, and the roll bite. a step of gluing the opposite edges of each film strip before a film row formed by overlapping each film strip enters, and a step of bonding the insulating film strip with the conductor row in between while passing through the roll bite A method for manufacturing a flat cable, comprising the steps of heat-sealing the strips, and peeling off the guide film from the insulating film strip after passing through the roll bite.