JPH09153312A - Manufacture of flat cable and its manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat cable manufacturing method and its manufacturing device which make it possible to manufacture a flat cable having a different interval between a fusion part and a non-fusion part without replacing a heat roll for forming the fusion part. SOLUTION: As for an all-around grooved heat roll 2 and a partially grooved heat roll 3 which stand opposite to each other for forming a fusion part, a plurality of partially grooved heat rolls 3 each having a different interval of the partial groove are previously set and it is made possible to manufacture a flat cable having a different interval by selectively determining whether each of the plurality of partially grooved heat rolls 3 is to be used for fusion or not according to whether a temperature is set at a fusion temperature or at a lower temperature. These heat rolls are adapted to rotatable normally and reversely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a flat cable having a fused portion and a non-fused portion in its longitudinal direction.

[0002]

2. Description of the Related Art FIG. 3 shows a typical manufacturing example of a flat cable having a fused portion and a non-fused portion. A plurality of insulated wire cores 1 fed from a feeding device are arranged in parallel (in the drawing). In parallel with the front and back sides of the paper surface) to preheat by passing between the heat rolls 2 and 2 with full-circumferential grooves, and further with one full-circumferential heat roller 2 with partial groove By passing it between the heat roller 3 and the attached heating roll 3, the insulators of the insulating cores that are parallel to each other are partially melted and adhered to each other, so that the fused portion 4 and the non-fused portion 5 as shown in FIG. A flat cable is manufactured by alternately repeating and.

[0003]

A flat cable having a fused portion and a non-fused portion has various intervals between the fused portions depending on the customer's application. For example, as shown in FIGS.
It is customary that the number of fusion-bonded portions 4 having the same length is different as described above. Note that FIG. 6 shows the fused portion 4 in a cross section.

By the way, when the flat cables having different intervals as described above are manufactured by the manufacturing method as shown in FIG. 3, the partial grooved heat roll 3 is set up once to obtain the flat cable as shown in FIG. 4 or 5. Only one type of flat cable can be manufactured. That is, it is necessary to replace the partial grooved heat roll 3 each time the fusing section interval is different. Considering the setup work and the stop time of the machine during setup, economic damage is large.

Therefore, the problem to be solved by the present invention is to manufacture a flat cable having different intervals between the fused portion and the non-fused portion without exchanging the heat roll for forming the fused portion.
A flat cable manufacturing method and a manufacturing apparatus are provided.

[0006]

SUMMARY OF THE INVENTION A method of manufacturing a flat cable provided by the present invention comprises a partial grooved heat roll and a partially grooved heat roll which are opposed to each other for forming a fused portion. Different intervals are set by presetting a plurality of grooves with different groove intervals and selecting whether or not the plurality of partial grooved heat rolls are fused or not at a temperature setting of fusion temperature or lower. It is a method that enables the manufacture of flat cables.

In the flat cable manufacturing apparatus provided by the present invention, the heat roll with the entire groove and the heat roll with the partial groove facing each other for forming the fusion-bonded portion are provided with the interval of the partial groove. A plurality of different heat rolls are provided and these heat rolls can be rotated in the forward and reverse directions.

[0008]

1 and 2 show an embodiment of the present invention, in which two partial grooved heat rolls 3 and 6 are 180 ° reciprocal with respect to one full circumference grooved heat roll 2. This is an example of setting from the direction.

In the partial grooved heat roll 3 and the partial grooved heat roll 6, the former 3 has two partial grooved portions in the circumferential direction and the latter 6 has three partial grooved portions in the circumferential direction. These are preset with different intervals for the partially grooved parts, such as with.

In the case of FIG. 1, the heat rolls 2, 3 and 6 are rotated in the normal direction, and the heat roll 3 with the partial groove is selected for fusing. Therefore, while the partial grooved heat roll 3 is set to the fusion temperature, the partially grooved heat roll 6 is set to a temperature lower than the fusion temperature and set to a low temperature at which the insulating core does not melt. Then, the insulated wire core 1 is passed between the heat roll 2 with the entire groove and the heat roll 6 with the partial groove to preheat with the heat roller 2 with the entire groove,
Then, the heat roll 2 with full circumference groove and the heat roll 3 with partial groove
To form a fused portion of the insulated core 1 by melting and adhering the insulator. This produces a flat cable (FIG. 4) with constant intervals.

In the case of FIG. 2, the heat rolls 2, 3 and 6 are reversed, and the heat roll 6 with partial groove is selected for fusing. Therefore, while the partial grooved heat roll 6 is set to the fusion temperature, the partially grooved heat roll 3 is set to a temperature lower than the fusion temperature and set to a low temperature at which the insulating core does not melt. Then, the insulating core 1 is passed between the heat roll 2 with the entire groove and the heat roll 3 with the partial groove to preheat with the heat roller 2 with the entire groove,
Then, the heat roll 2 with the whole circumference groove and the heat roll 6 with the partial groove
To form a fused portion of the insulated core 1 by melting and adhering the insulator. This produces a flat cable (FIG. 5) with constant intervals.

According to the present embodiment configured as described above,
The setup time after the machine is stopped can be greatly shortened, and the loss of stop time that occurs each time the rolls are replaced can be greatly reduced.

In the above embodiment, the two types of partial grooved heat rolls 3 and 6 are always in contact with the circumferential grooved heat roll 2, but one of the rolls, The roll 6 in FIG. 1 and the roll 3 in FIG. 2 may be separated from the roll 2.

In the above embodiment, the case where two types of flat cables with intervals are manufactured is shown.
Not limited to this, flat cables with three or more types of intervals may be manufactured. In this case, three or more kinds of heat rolls with partial grooves having different intervals of the part with partial grooves may be set on the circumference of the heat roll with full groove.

[0015]

According to the present invention as described above, it is possible to manufacture a flat cable having a different interval between the fused portion and the non-fused portion without exchanging the heat roll for forming the fused portion. The intended purpose of providing the manufacturing method and the manufacturing apparatus can be achieved, and the economic effect obtained by greatly shortening the setup time can be great.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a situation in which a fused portion is formed according to an embodiment of the present invention.

FIG. 2 is an explanatory view of a situation in which a fused portion different from that in FIG. 1 is formed in the embodiment of the present invention.

FIG. 3 is an explanatory view of a situation in which a fused portion is formed in a conventional example.

FIG. 4 is a plan view showing a flat cable.

FIG. 5 is a plan view showing a flat cable having a different interval from that of FIG.

FIG. 6 is a cross-sectional explanatory view of a fusion-bonded portion in a flat cable.

[Explanation of symbols]

 1 Insulated wire core 2 Full-groove heat roll 3 Partial groove heat roll 4 Fused part 5 Non-fused part 6 Partial groove heat roll

Claims (2)

[Claims] 1. A method for producing a flat cable having a fused portion and a non-fused portion in its own longitudinal direction, comprising: a heat roller with a circumferential groove and a heat roller with a partial groove facing each other for forming the fused portion. Whether or not the partial grooved heat rolls are set in advance with a plurality of partial groove intervals different from each other, and the plurality of partial grooved heat rolls are fused or not at a temperature setting of a fusion temperature or a lower temperature. By selecting, it is possible to manufacture flat cables with different intervals,
Flat cable manufacturing method. 2. An apparatus for producing a flat cable having a fused portion and a non-fused portion in its own longitudinal direction, comprising: a heat roller with a circumferential groove and a heat roller with a partial groove facing each other for forming the fused portion. An apparatus for manufacturing a flat cable, wherein a plurality of heat rolls with partial grooves are provided with different intervals of partial grooves, and these heat rolls can be rotated in forward and reverse directions.