JPH0197316A - Manufacture of ribbon cable - Google Patents

Abstract

PURPOSE:To effectively obtain a ribbon cable having high adhesive property by applying solvent in uniform on all of the surface of a group of insulating cores and traveling a group of the cores between an applying roll and a drawing roll. CONSTITUTION:A group of insulating cores 6, respective adjacent cores being arranged in parallel to each other, are traveled between an applying roll 7 and a drawing roll 8. A group of the cores 6 are made to pass through between a felt layer 9 of the roll 7 and the roll surface of the drawing roll 8, and solvent impregnated in the layer 9 is applied on the surface of a group of the cores 6, thereafter, the adjacent parts of the insulating cores are bonded while removing the solvent by drying. Thus, the impregnated amount of the solvent on each part of the layer 9 is uniform so that it is possible to apply the solvent in uniform on all of a group of the insulating cores 6.

Description

[Detailed description of the invention] (Technical field of invention) The present invention relates to a method for manufacturing a ribbon electric wire.

(Technical background of the invention) In recent years, electric wires have been used as internal wiring for various electronic and electrical equipment.
Ribbon wires are used that have several or more than ten plastic insulating cores arranged in parallel on the same plane and integrated by adhesive.

Traditionally, in order to manufacture such ribbon wires,
As shown in FIGS. 2 and 3, a core group 2 consisting of a plurality of insulating cores 1 arranged in parallel is run with its front and back sides changed through a take-up roll 3, and the core group 2 is On the upper surface of group 2, a chevron-shaped felt tip 5 having a flat bottom surface and provided with a solvent dripping portion 4 at the top.
A method is adopted in which the solvent is applied to both the front and back surfaces of the core group 2, and then dried. Since the front and back surfaces of 2 were coated separately, the work efficiency was poor. Further, the amount of solvent impregnated into the felt chip 5 is not uniform over the entire width direction of the lower surface,
Since the amount of solvent impregnated at both ends was smaller than that at the center, there was a problem that the amount of solvent applied to both ends of core group 2 was smaller than at the center, making it difficult to bond these parts. .

(Objective of the Invention) The present invention was made to solve these problems, and it is possible to efficiently manufacture a ribbon wire with high adhesiveness by uniformly applying a solvent in the width direction of the insulating core group. The purpose is to provide a method.

(Summary of the Invention) The method for manufacturing a ribbon electric wire of the present invention includes a plurality of insulating cores arranged adjacent to each other in parallel, the outer circumference of which is coated with a porous impregnated layer, and the outer peripheral surface of which is coated with a porous impregnated layer. The solvent is applied to the surface of the insulating core by passing the solvent between the cylindrical application port through which the solvent is dripped and a take-up roll disposed closely opposite to the bottom thereof, and then drying the insulating core. It is a feature.

(Embodiments of the Invention) Hereinafter, embodiments of the method for manufacturing a ribbon electric wire of the present invention will be described based on the drawings.

In the embodiment, as shown in FIG. 1, a plurality of cores insulated with polyvinyl chloride or the like fed out from a bobbin are arranged adjacently in parallel to form an insulating core group 6, which is described below. It is made to run between the application roll 7 and the take-up roll 8 shown in FIG.

That is, it has a structure in which seven application rolls are provided with a felt layer 9 of an appropriate thickness on the outer peripheral surface of a cylindrical roll body, and a dripping nozzle 10 for a solvent such as tetrahydrofuran is arranged above. . And such a coating roll 7
A take-up roll 8 is disposed opposite to the lower side of the roll so that its outer circumferential surface is in close contact with the felt layer 9.

The core group 6 is fully inserted between the felt layer 9 of the application roll 7 and the roll surface of the take-up roll 8 configured as described above, and after coating the surface of the core group with the solvent impregnated in the felt 19, the core group 6 is placed in a dryer. to adhere adjacent portions of the insulating core to each other and dry and remove the solvent.

In the embodiment configured in this way, the application sail 7
Since the position where the solvent is dripped and the position where it is applied to the insulating core group 6 are vertically apart, there is a gap between them.
The solvent penetrates evenly through the N9. Therefore, the impregnation 1 of the solvent in each part of the coated product of the felt layer 9 is uniform, and the solvent is evenly applied to the entire insulating core group 6. Since the core group 6 is placed in close contact with the roll surface, when the core group 6 passes between them, not only is a large amount of solvent oozed out from the felt layer 9 by being pressed by the core group 6, but also the felt layer 9 itself is will enter the gap between the insulating cores.Therefore, just one pass between these rolls will result in
A sufficient amount of solvent is applied to both the front and back surfaces of the core group 6.
Effects of the Invention) As is clear from the above description, in the present invention, a sufficient amount of solvent can be applied to both the front and back surfaces of the insulating core group by passing it between the coating roll and the take-up roll once. be done.

Further, since the solvent is uniformly applied to each part of the surface of the insulating core group, a highly adhesive ribbon wire can be efficiently manufactured.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of the method for manufacturing a ribbon electric wire of the present invention, FIG. 2 is a schematic diagram showing a conventional method for manufacturing a ribbon electric wire, and FIG. It is an enlarged view. 2, 6-----1 Insulating core group 3, 8--1 Taking-up roll 5-----
−−−−−−− Felt tip 7 −−−−−−−−
-1--Coating sail 9----------Felt layer 10--1 Solvent dripping nozzle Figure 1 Figure 2 Figure 7--Lx-Low JL/S...-3j crime, D-IL/lθ...>'F-'ff1A; 11th ゛・σ 3rd
figure

Claims (1)

[Claims] 1. A plurality of insulating cores arranged adjacent to each other in parallel are coated with a cylindrical coating roll whose outer circumferential surface is coated with a porous impregnated layer and a solvent is dripped onto the impregnated layer above, and a cylindrical coating roll below. A method for producing a ribbon electric wire, which comprises applying the solvent to the surface of the insulating core by passing the insulating core through a pair of take-up rolls disposed closely opposite each other, and then drying the insulating core.