JPS622409B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of manufacturing a flat cable with a bulk pressure-welding connector, which is used as an internal wiring material for electronic equipment.

[Prior Art] Conventionally, as a flat cable that prevents crosstalk and is easy to terminally process, the applicant of the present application has developed a cable as shown in Japanese Patent Application No. 52-131897 (Japanese Unexamined Patent Publication No. 54-65383). We are proposing a cable with a structure in which paired twisted sections and parallel fused sections are sequentially provided in the longitudinal direction.

That is, the existence of the twisted pair portion prevents crosstalk, and the terminal processing is facilitated by fitting the batch pressure contact type connector to the parallel fused portion.

This flat cable is cut at the parallel welded portion, and by fitting a bulk pressure welding type connector to this parallel welding portion, it is used as a flat cable with a bulk pressure welding type connector as an internal wiring material for electronic equipment. It is something.

It should be noted that the collective press-fitting type connector is a well-known connector that has been used conventionally, and has an upper connector portion in which U-contacts 12 are arranged at predetermined intervals as shown in FIG. By fitting the upper connector part and the lower connector part to the parallel fusion part of the flat cable, the U contact 1
2 breaks through the insulator of the core 4 and makes contact with the conductor 1, thereby making the connection.

[Problems to be Solved by the Invention] In the conventional flat cable of this type, after the cable is manufactured, the cable is cut at parallel welded portions at predetermined intervals, and a mass pressure welding type connector is fitted into the parallel welded portions. Therefore, when providing a flat cable with a mass displacement type connector, the flat cable must first be manufactured, and then the mass connector must be mated, which requires two steps. Ta.

Furthermore, in this case, the dimensional accuracy of the parallel fused portions must be fused to the same level of dimensional accuracy as that of the batch pressure welding type connector, which requires extremely strict dimensional accuracy and is difficult to manufacture.

Figure 1 shows the cross-sectional shape of this parallel welded part, and after arranging the cores in a mold at predetermined intervals, the cores are fused using heat fusion, high frequency, electric energy such as ultrasonic waves, etc. , the insulator 2 is melted and flowed in the width direction, and adjacent cores are fused together.

[Means for Solving the Problems] In view of the above-mentioned points, the present invention has been made for the purpose of providing a manufacturing method for a flat cable with a bulk pressure welding type connector that is easy to manufacture. The method includes a twisting process of sequentially providing a paired twisted part and a parallel part on each of a plurality of cores, a process of gathering the cores into a predetermined width, a process of regularly arranging the cores of the parallel part, and a batch pressure welding process on the aligned part. A method for manufacturing a flat cable with a one-shot pressure-welding connector, characterized by sequentially providing steps for attaching connectors.

In other words, the length of the cable varies depending on the usage conditions, but for cables of a certain length, it is possible to achieve strict precision by directly installing a bulk press-fit type connector on the cable in the cable production line without providing a parallel fusion part. It is possible to omit the process of fusing the parallel welded parts, which is required, and the manufacturing thereof is extremely easy.

[Example] An example of the manufacturing method of the present invention will be further described with reference to the accompanying drawings.

In FIG. 2, the cores 4 fed from the delivery drum 3 are transported to a core collecting device such as a grooved roll 5.
They are gathered together to a certain width.

Next, the twisting device 6 sequentially forms an S-twisted part, a parallel part, a Z-twisted part, and a parallel part at regular intervals in the longitudinal direction of the cable.

The twist pairing device 6 is made of a spur gear-shaped nozzle provided with guide holes through which two cores 4 are passed, for example, as is known from Japanese Patent Application No. 131897/1987, which was previously proposed by the applicant of the present application. Pair twisting is performed by pulling the nozzle with a winder while rotating the nozzle at a constant number of revolutions.

After creating a twisted pair portion of a certain length, the rotation of the nozzle is stopped.

In this case, the core guide hole provided in the nozzle is arranged on a horizontal line and rotation is stopped, and the parallel part is created by pulling it with a winder in that state.

After this, the nozzle is rotated by the same number of rotations in the opposite direction to the previous time, and the twisted part is created again by pulling it with the winder. By repeating this operation, the twisted part is created in the length direction of the cable. The parallel portion and the parallel portion are formed in sequence.

Thereafter, the cores 4 are guided to the batch pressure welding type connector installation device 8, during which the cores 4 are aligned to a predetermined width and are regularly aligned using a spring gathering device and a reversal prevention jig. ing.

A spring aggregation device is a device that compresses the cores from the outside in the width direction of the cable with the force of a spring so that the cores are within a predetermined width, and the spacing between the cores is a predetermined dimension. The reversal prevention jig is a jig, such as a grooved roll, that sandwiches the core from above and below to prevent the core of the parallel part from reversing due to the untwisting of the paired part. , with the core in a state where the nozzle rotation has stopped, the parallel parts are aligned so that they can be attached to the collective pressure welding type connector.

As shown in FIG. 3, the collective pressure welding type connector mounting device 8 installs the parallel parts of the core 4 at regular intervals on a jig having a groove 10 that matches the shape of the lower connector part of the collective pressure welding type connector. This is a device that presses and presses the upper connector portion 11 from above after arranging the connectors, and is fitted to the conductor 1 of the core 4 with the U contact 12.

After that, the lower connector part is connected to the upper connector part 1.
1 to form a collective press-contact type connector 13.

The flat cable manufactured in this way is then wound up by a winding machine 9, and connected to a bulk pressure welding type connector 1.
By cutting the core 4 into three parts, a flat cable with a collective pressure welding type connector as shown in FIG. 4 is completed.

[Effects of the Invention] According to the method of the present invention as described above, a flat cable with a pressure-welding connector can be manufactured all at once during the cable manufacturing process,
It is easy to handle because there is no need for the conventional step of manufacturing a single-layer flat cable and then fitting the bulk press-fitting connector.

Furthermore, since the step of fusing the parallel portions can be omitted, it is economical and has the advantage of making the manufacturing equipment more compact.

Furthermore, there is no need to control the dimensional accuracy by changing the welding conditions, and the manufacturing operation is easy, so its industrial value is very great.

[Brief explanation of the drawing]

Fig. 1 is an explanatory cross-sectional view showing an example of a parallel fusion part of a conventional flat cable, Fig. 2 is an explanatory view showing an embodiment of the method of the present invention, and Fig. 3 is a mass pressure welding type connector installation device. An explanatory diagram showing an example of
FIG. 4 is an explanatory diagram showing an embodiment of a flat cable with a collective pressure-welding type connector manufactured by the method of the present invention. 1: Conductor, 2: Insulator, 3: Delivery device, 4:
Core, 5: Core gathering device, 6: Twisting device, 7: Aggregating and aligning device, 8: Bulk pressure welding type connector mounting device, 9: Winding device, 10: Connector groove, 11:
Upper connector part, 12: U contact, 13: Bulk pressure welding type connector.

Claims (1)

[Claims] 1. A twisting step of sequentially providing paired twisted portions and parallel portions on a plurality of cores, a step of gathering the cores into a predetermined width, and a step of regularly arranging the cores of the parallel portions,
A method for manufacturing a flat cable with a collective pressure welding connector, comprising the steps of sequentially attaching a collective pressure welding connector to the aligned portion.