JPH09115363A - Manufacture of flat cable and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat cable free from a bend due to a wire strand. SOLUTION: A coil C is placed on a turntable 1 and the amount of a wire W paid out from the coil C is measured with a measuring instrument 2. Then, the turntable 1 is rotated in the winding direction of the coil C, so as to make the peripheral travel variable of the wire delivery part 20 of the coil C equal to the amount of the wire W as paid out, on the basis of a measurement value obtained with the measuring instrument 2. As a result, the wire W is untwisted and delivered, according to the rotation of the turntable 1. Then, the wire W is placed on a flat surface by a plurality of rows, and bundled, thereby providing a flat cable free from a bend.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention improves a method and apparatus for manufacturing a flat cable in which a plurality of electric wires coated with insulation are arranged in parallel on a plane and bundled with a tape, and more particularly, a method for feeding the electric wire from a winding coil. And method for manufacturing the flat cable.

[0002]

2. Description of the Related Art Conventionally, there has been known a method of winding a wire covered with insulation in a wire factory to form a plurality of coils, and transporting the coils to a flat cable manufacturing factory to manufacture a flat cable. According to this method,
Since it is not necessary to exchange the reels or the like for winding the electric wires between the two factories, the transportation cost can be suppressed.

The flat cable manufacturing apparatus used in the above method requires, as shown in FIG. 2, a supply unit 50 for feeding an electric wire W from a plurality of coils C in one direction, and an electric wire W supplied from the supply unit 50. A bundling unit 51 that is arranged on a flat surface at intervals and is bundled with tape.
And The supply unit 50 is configured such that a pedestal 52 on which the coil C is placed is provided with a guide 53 that prevents the electric wire W fed from the coil C from being entangled.

[0004]

However, according to the apparatus as described above, as shown in FIG. 3, when the electric wire W is unwound from the coil C, a twist a is generated in the electric wire W and the flat cable is formed. There was a problem that the car would bend.

Therefore, the present invention is intended to provide a method and an apparatus for manufacturing a flat cable in which bending of the flat cable due to twisting of an electric wire does not occur.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 unwinds an electric wire in one direction from a plurality of coils formed by winding an electric wire covered with an insulation coating, and In a method of manufacturing a flat cable in which the wires are arranged in parallel on a plane at a required interval and bundled with a tape, when the electric wire is paid out, the amount of movement of each coil in the circumferential direction of the electric wire payout portion matches the amount of the electric wire paid out. In this way, the method of rotating in the winding direction at any time was adopted.

Further, according to the second aspect of the present invention, a supply unit for feeding the electric wire in one direction from a plurality of coils formed by winding an electric wire covered with insulation, and the electric wire supplied from the supply unit are arranged at required intervals. Place them side by side on a plane,
In a flat cable manufacturing apparatus consisting of a binding unit for bundling with tape, the supply unit, a turntable on which a coil is placed, a measuring device for measuring the amount of electric wire fed from the coil, and a measurement value of this measuring device On the basis of,
The control unit is configured to rotate the turntable in the coil winding direction so that the amount of movement of the wire feeding portion in the coil in the circumferential direction matches the amount of feeding.

[0008]

FIG. 1 shows a supply unit of a flat cable manufacturing apparatus according to the present invention. This supply unit includes a turntable 1 on which the coil C is placed, a measuring device 2 that measures the amount of the electric wire W fed out from the coil C, and a sensor 3 that measures the diameter of the coil C. The turntable 1 is adapted to be rotated by a drive device 4 provided below the turntable 1. The measuring instrument 2, the sensor 3, and the driving device 4 are connected to the control device P. Each component 1
A plurality of to 4 are provided according to the number of electric wires of the flat cable to be formed.

The measuring device 2 includes a pair of rollers 10 and 10 rotating in contact with the electric wire W, and an encoder 11 for transmitting to the controller P the amount of the electric wire W delivered from the coil C calculated based on the number of rotations of the rollers 10. It consists of and.

The sensor 3 detects the diameter d of the feeding portion 20 of the electric wire W in the coil C and sends it to the control device P. In this case, since the electric wire W is fed from the inner diameter side of the coil C, the inner diameter of the coil C is detected as the diameter d.

The control device P calculates the circumferential length of the coil C in the feeding unit 20 based on the signal transmitted from the sensor 3,
When this circumference matches the amount of wire W sent out from the encoder 11, the drive device 4 is driven to rotate the turntable 1 once in the winding direction of the coil C.

The turntable 1 may be continuously rotated as the electric wire W is fed from the coil C.

Further, the sensor 3 is omitted, and the program set in the control device P calculates the circumference of the coil C based on the feeding amount of the electric wire W transmitted from the measuring instrument 2, and the calculated value and the electric wire. Turntable 1 by comparing the amount of W
May be rotated.

When the coil C is placed on the turntable 1 of the supply unit constructed as described above and the electric wire W is paid out from the coil C through the rollers 10 and 10, the electric wire W is rotated as the turntable 1 rotates. W is untwisted.

As shown in FIG. 4, the fed-out electric wire W is measured and cut, and the reinforcing tapes 30 are fused at both ends to form a flat cable.

[0016]

According to the present invention, as described above, the coil is rotated in the winding direction so that the electric wire fed from the coil is untwisted, so that the flat cable formed is not bent. .

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a supply unit of a flat cable manufacturing apparatus according to the present invention.

FIG. 2 is a diagram showing an outline of a conventional flat cable manufacturing apparatus.

FIG. 3 is a view showing a twisted state of an electric wire fed out from the above coil.

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

[Explanation of symbols]

 C coil W electric wire P control device 1 turntable 2 measuring instrument 3 sensor 4 driving device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoki Tamura 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi Harness Research Institute, Inc.

Claims (2)

[Claims] 1. A method of manufacturing a flat cable, wherein an electric wire is unwound in one direction from a plurality of coils formed by winding an electric wire covered with an insulation coating, and these electric wires are arranged in parallel on a plane at a required interval and bundled with a tape. 2. In the method for producing a flat cable as described above, each coil is rotated at any time in the winding direction so that the amount of movement of the wire feeding portion in the circumferential direction matches the amount of feeding of the wire. 2. A supply unit for feeding an electric wire in one direction from a plurality of coils formed by winding an electric wire coated with insulation, and an electric wire supplied from the supply unit are arranged in parallel on a plane at a required interval. In a flat cable manufacturing apparatus including a binding unit that binds with a tape, the supply unit includes a turntable on which a coil is placed,
A measuring device that measures the amount of electric wire fed from the coil, and based on the measured value of this measuring device, the turntable is coiled so that the amount of movement of the electric wire feeding portion in the coil in the circumferential direction matches the amount of feeding. And a control means for rotating the flat cable in the winding direction.