JPH03116611A - Manufacture of tape-shaped wire - Google Patents

Abstract

PURPOSE:To prevent meandering of a tape shaped wire so as to avoid lowering of product quality and the loss of products resulting from meandering by providing in the winding passage of the tape-shaped wire a sensor for detecting positions of both ends of the wire, and controlling the travel speed of conductors in response to output from the sensor. CONSTITUTION:When a conductor 8 moves at exactly the same speed as a dummy wire 8' a wire 12 will not meander but, for example, when a right side conductor(and its dummy wire) moves at higher speed than a left side conductor the tape shaped wire 12 is slid to the left side and light is blocked by a tape end 12b on the left side 6b of a photoelectrical sensor 6 so that the amount of light is decreased, while on the right side 6a the amount of light is increased. Thus an electrical signal fed to the electromagnetic brake 10a of a right side dummy wire supply 9a is increased and its braking force is increased; an electrical signal fed to the electromagnetic brake of the other dummy wire supply 9b is decreased and its braking force is decreased. Thus the travel speed of the right side dummy wire 8' is restrained and meandering of the tape-shaped wire is prevented.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for manufacturing a tape-shaped electric wire.

[Prior Art] Tape-shaped electric wires have conventionally been manufactured using a manufacturing apparatus as shown in FIG. That is, a plurality of conductors 21 are pulled out from the conductor supply section 20, arranged in parallel by a positioning roller 22 having grooves in the circumferential direction, and supplied. Next, plastic tapes 23 are sandwiched on both sides of these conductors moving in parallel, and these tapes are thermocompression bonded with a heat processing roll 24 and taken off with a take-off roller 25. Further, both ends of the tape-shaped electric wire are cut with a cutter 26, excess tape or dummy wire is removed to obtain a predetermined width, and the wire is wound up on a winding machine.

[Problem to be Solved by the Invention] Incidentally, in such a conventional tape-shaped electric wire manufacturing apparatus, the moving speed of the conductor 21 and the conductor after being coated with tape is determined by the rotational speed of the take-up machine 25. The moving speed of each conductor changes slightly due to the design accuracy of the take-off roll, etc., and other causes, which may cause meandering in the tape-shaped electric wire 27 being taken off.

Such meandering may cause a necessary conductor to be cut when cutting with a cutter, and may also cause distortion during winding, resulting in a decrease in product quality and product loss.

[Object of the Invention] The present invention solves these conventional problems, and provides a method for manufacturing a tape-shaped electric wire that can prevent the meandering of the electric wire that occurs in the manufacturing process of the tape-shaped electric wire and improve the product yield. The purpose is to provide.

[Means for Solving the Problems] A method for manufacturing a tape-shaped electric wire of the present invention that achieves the above object includes supplying a plurality of conductors in parallel and sandwiching an insulating tape between the conductors to form a tape-shaped electric wire. During manufacturing, the relative positions of both ends of the tape-shaped electric wire after being sandwiched are detected relative to a scheduled reference transport position, and the position of either end is deviated from the reference transport position. When the conductor is on the other end side, the supply speed of the conductor on the other end side is controlled to be decelerated.

[Example] Hereinafter, a method for manufacturing a tape-shaped electric wire of the present invention will be described based on an example shown in the drawings.

FIG. 1 shows an embodiment of a tape-shaped electric wire manufacturing apparatus to which the present invention is applied. This device manufactures a tape-shaped electric wire having dummy wires at both ends of the conductor, and includes a conductor supply section 1, a feed roll 2, a tape supply section 3, and a pair of thermal processing rolls 4.4.
', a take-off machine 5, a sensor 6 and a cutter 7.

The conductor supply unit 1 includes a plurality of conductor supplies 1 each having a conductor 8 wound thereon.
a is pivotally supported on the main body. Two of the supplies 9a and 9b are wound with a dummy wire 8', and each serves as a braking means, for example, an electromagnetic brake 10.
a and 10b are connected. Electromagnetic brakes generate braking force according to the strength of the input electrical signal.
A dummy wire 8' is controlled by a signal from a sensor 6, which will be described later.
The feeding speed can be adjusted.

The feed roll 2 has a conductor 8 and a dummy wire 8" in its circumferential direction.
Grooves are cut corresponding to the number of conductors 8, 8 and 8, respectively, with the dummy wires 8' at both ends and the conductors 8 arranged in parallel inside the grooves.
Position 8°.

The tape supply section 3 is a roll having an insulating tape 11 wound thereon, such as a heat-fusible plastic, which is supported by the shaft, and is provided on both sides of the conductor 8, which is supplied and moved in parallel.

A pair of thermal processing rolls 4.4' are arranged on both sides of the path of the conductor 8 and are urged in a direction to press against each other, and at least one of the rolls has a built-in heating means.
The insulating tape 11 supplied from the insulating tape 11 is heat-pressed with the conductor 8.8' sandwiched therebetween.

The take-off machine 5 is equipped with a pair of take-off rolls, and the take-off rolls are rotated by a drive means (not shown), and the take-off rolls are rotated by a drive means (not shown) to remove the electric wire 1 after the tape has been sandwiched.
2 is picked up at a constant picking speed.

The sensor 6 detects the positions of both ends of the moving tape-shaped electric wire 12, and is composed of photoelectric sensors 6a and 6b as shown in FIG. 2, for example. In FIG.
b is installed at a position where the tape-shaped electric wire 12 passes through, and in the transport position when the tape-shaped electric wire 12 does not meander (that is, the reference transport position), both ends 12 a and 12 b pass approximately in the middle of the photoelectric sensors 6 a and 6 b. It will be installed like this.

Then, a change in the position of both ends 12a, 12b with respect to the reference transport position is detected as a change in the amount of light from the light emitting section, and an electric signal of a magnitude proportional to the amount of light is sent to the electromagnetic brake 1.
Send to 0a and 10b.

The cutter 7 cuts both ends of the electric wire 12 sandwiched with tape inside the dummy wire to form a tape-shaped electric wire of a predetermined width.

Next, the operation in the above configuration will be explained.

Conductor supply 1a and dummy wire supply 9a.

The conductor 8 and dummy wire 8° drawn out from 9b are arranged in parallel by the feed roll 2, and sent to the heat processing roll 4.4'. The insulating tape 11 is sandwiched from both sides of the heat processing roll 4.4' and is heat-pressed and integrated. The electric wire 12 after being sandwiched with the tape is sent to the cutter 7 via the take-off machine 5 and the guide roll 13, where each conductor 8 and the dummy wire 8'
If the moving speeds of the wires 12 and 12 are exactly the same,
However, if the moving speed of the conductor (and dummy wire) on the right side is higher than the moving speed on the left side as shown in FIG. 3, for example, the tape-shaped electric wire 12 shifts to the left side. Then, as shown in FIG. 4, the left side 6b of the photoelectric sensor 6
Since the light is quickly cut off by the tape end 12b, the amount of light decreases, and the amount of light increases on the right side 6a. Therefore, the electric signal sent to the electromagnetic brake 10a of the dummy wire supply 9a on the right side (front in FIG. 1) increases, and its braking force increases. On the other hand, the electric signal sent to the electromagnetic brake of the other dummy wire supply 9b decreases, and its braking force decreases. As a result, the dummy line 8 on the right side in Figure 3
Since the moving speed of ' is suppressed, the meandering of the tape-shaped electric wire is suppressed. Even if meandering occurs to the right, it can be controlled in exactly the same way, and the tape-shaped wire will always move straight.

Next, the tape-shaped electric wire is cut at both ends including the dummy wire by 8 degrees to a predetermined width using a cutter 7, and then wound onto a winding drum (not shown). At this time, since there is no meandering of the tape-shaped electric wire, there is no risk of the conductor being cut, and no distortion occurs during winding.

FIG. 5 is a diagram showing a second embodiment of the tape-shaped electric wire manufacturing method of the present invention. The tape-shaped electric wire manufacturing device shown in FIG. 5 has the same configuration as the manufacturing device shown in FIG. 1, from the feed roll 2 to the cutter 7. The moving speed of the conductor is controlled by two brake means 90a and 90b. The braking means 90a, 90b consists of a pair of mutually spaced apart rolls 91.92 each winding a conductor 8, and an electromagnetic brake 93 connected to the rolls 91.
92 are rotatably supported by the main body, and by controlling the rotation of the roll 91 using an electromagnetic brake 93, the supply (movement) speed of the conductor 8 can be controlled.

The sensor 6 detects the relative position of both ends 12a and 12b of the tape-shaped electric wire 12 based on changes in the amount of light, and sends an electric signal with a strength proportional to the amount of light to the electromagnetic brake 93, which controls the electromagnetic brake 93. What is done is the same as in the embodiment shown in FIG.

However, in this case, since no dummy wire is used, the speed of the conductor 8 itself is controlled.

FIG. 6 further shows the third method of manufacturing the tape-shaped electric wire of the present invention.
It is a figure showing an example of. In the embodiment of FIG.
Each conductor supply 1a is provided with brake means B, -B6, and is controlled by dividing them into two left and right blocks (left end side and right end side).

That is, as shown in FIG. 7, in this embodiment, the outputs of the photoelectric sensors 6a and 6b installed on both sides of the tape-shaped wire passage are compared, and the brake means B1 to B and B4 to
It includes a control section 60 that controls B6. When the outputs of both sensors 6a and 6b are equal, the control unit 60 controls the brake means B.
The output voltages to B1 to B3 and B4 to B6 are made equal. If the output of the photoelectric sensor 6a on the right side is larger than that on the left side, it means that the tape-shaped electric wire has shifted to the left side (Fig. 3).
The output voltage of the brake means to the right blocks B4 to B6 is made higher than the output voltage to the left blocks B, -B, to increase the braking force to the right conductor. Conversely, when the output of the left photoelectric sensor 6b is larger, the output voltage to the left blocks B1 to B3 of the brake means is changed to the output voltage from the right blocks B4 to B.
6 to increase the braking force on the left conductor.

In both the second and third embodiments, the moving speed of the conducting wire itself is controlled, so a dummy wire is not required, and costs can be reduced.

[Effects of the Invention] As is clear from the above embodiments, according to the method for manufacturing a tape-shaped electric wire of the present invention, a sensor is provided in the winding path of the tape-shaped electric wire to detect the positions of both ends, and the Since the moving speed of the conductor is controlled by the output, it is possible to prevent the tape-shaped electric wire from meandering, and it is possible to eliminate deterioration in product quality and product loss due to meandering.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a first embodiment of a tape-shaped electric wire manufacturing apparatus according to the present invention, and FIG. 2 is a sectional view showing the main parts of a sensor.
FIG. 3 is a diagram showing the occurrence of meandering in the tape-shaped electric wire, FIG. 4 is a diagram showing the relationship between the tape-shaped electric wire and the sensor during meandering, and FIGS. 5 and 6 are diagrams showing the tape-shaped electric wire according to the present invention. FIG. 7 is a diagram showing a control method of the third embodiment, and FIG. 8 is a diagram showing a conventional tape-shaped electric wire manufacturing device. 6...Sensor 8...Conductor 8°...Dummy wire (conductor) 10a, 10b, 90a, 90b. B, ~B,...Brake means 11...Insulating tape 12...Tape-shaped electric wires 12a, 12b...End portion

Claims (1)

[Claims] When manufacturing a tape-shaped electric wire by sandwiching an insulating tape between the conductors while supplying a plurality of conductors in parallel, it is necessary to determine the relative position of both ends of the tape-shaped electric wire after sandwiching with respect to the planned reference transport position. A tape-shaped electric wire characterized in that the supply speed of the conductor on the other end side is decelerated and controlled when the position of either one of the ends is deviated from the reference conveyance position. Production method.