JPH03141513A - Tensionless supplying device for plastic tape - Google Patents

Abstract

PURPOSE:To supply a plastic tape to a heat roll preferably constantly without applying a distortion or an unnecessary tension to the plastic tape by providing a cylindrical plastic tape contact preventing means having a plurality of air blow holes in its outer circumferential surface. CONSTITUTION:A tensionless supplying device 8 for plastic tape includes a loosening quantity detecting means 6 for detecting a loosening quantity of a plastic tape 3 without getting in contact with it, and a rotation control means 7 having a function of controlling a drive motor 46 speed changeably based on information from the loosening quantity detecting means 6. In addition, a tape contact preventing means 9 is disposed on the inner side of a U-letter shaped loosened part of the plastic tape 3 not to get in contact with the plastic tape 3. A plurality of air blow holes 9a, 9a,..., 9a are provided in its circumferential surface, so by blowing air to the plastic tape 3 as required during action, attachment of the plastic tapes 3 with each other can be prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a tension-free plastic cable 1 for use in a tape electric wire manufacturing apparatus in which plastic tape is fused and bonded to a plurality of conductors arranged in parallel in the longitudinal direction. Regarding the supply device.

[Conventional technology] In recent years, with the development of electronic devices, electronic devices have become multifunctional.
Moreover, they tend to become smaller. As a result, electronic devices are becoming more densely packaged, making it impossible to use conventional connector plugs, which take up a lot of space for wiring between each board.
Widely used is a thin and flexible tape-shaped electric wire in which multiple conductors are arranged parallel to each other in the length direction between two pieces of insulating tape and fixed together, with an exposed conductor portion at the end. It became so.

FIG. 4 shows a tape electric wire 25 used for such a purpose, with four conductors 1.1. 1 are lined up parallel to each other at predetermined intervals, and each conductor 1 is sandwiched between two plastic tapes (insulating tapes) 3.4 so that each conductor 1 is exposed at both ends. Reinforcement tape 14 on each exposed part
．． 14 are joined together.

As shown in FIG. 5, this tape electric wire 25 guides the insulating tapes 3 and 4 from opposite directions to heating rollers 50 and 60 configured in pairs, and four conductive wires 1 arranged in parallel. ,1. . . , 1 is compressed between insulating tapes 3 and 4 as shown in the figure, and these are heated and fused to form an integrated tape-like continuous body 24 (see FIG. 3).
Manufactured by various processing.

By the way, the plastic tapes 3 and 4 supplied to the heating rolls 50 and 60 are supplied to a tape supply section 10 which has a predetermined length of plastic tape 3 wound thereon, and to this tape supply section 1.
A presser roll section 2 that pinches the plastic tape 3 from 0 by presser rolls 42 and 44 equipped with drive motors 46 configured in pairs and sends out the plastic tape 3 in the direction in the figure; and the presser roll section 2. A guide roll 48 is arranged to face each other, and a light emitting device is installed between the presser roll section 2 and the guide roll 48 to detect the amount of slack in the plastic tape 3 without contact and outputs the information to the rotation control means 7. Sections 5A, 6A, 7A and light receiving sections 5B, 6B, 7
A tensionless plastic tape feeding device comprising a slack amount detecting means 6 consisting of B, and a rotation control means 7 having a function of variable speed control of the drive motor 46 based on information from the slack amount detecting means 6. 80.

The slack amount detecting means 6 has a structure in which a light emitting section 5A, a light receiving section 5B, a light emitting section 6A and a light receiving section 6B, a light emitting section 7A and a light receiving section 7B are arranged as sets in upper, middle and lower stages, respectively. There is. These light receivers #5B, 6B, and 7B output a "low level" signal when the light from the light emitting sections 5A, 6A, and 7A are blocked by the plastic tape 3, and output a "high level" signal in other states. It looks like this.

Further, the rotation control means 7 includes the light receiving sections 586B and 7B.
As shown in FIG. 3, the rotational speed of the drive motor 46 is variably controlled in response to an output signal from the drive motor 46, as shown in FIG.

[Problems to be Solved by the Invention] However, the tension-free plastic tape feeding device 80 shown in FIG.
60 can be supplied with plastic tape 3
．． Since tape 4 is thin and light, there is a problem in that the tapes stick to each other at the U-shaped part due to static electricity, etc., and the tension is not stable.

[Object of the Invention] The present invention improves the disadvantages of the above-mentioned conventional examples, and provides a plastic tape that can always be fed to a heating roll in a good manner without applying distortion or unnecessary tension to the plastic tape. The purpose is to provide a tension supply device.

[Means for Solving the Problems] Therefore, in the present invention, a plastic tape is guided through a U-shaped slack part to first and second heating rolls that are arranged opposite to each other with their axes parallel to each other. In the tensionless plastic tape supply device, a cylindrical plastic tape contact prevention means having a plurality of air blowing holes on its outer circumferential surface is disposed in the valley of the slack portion without contacting the plastic tape. The aim is to achieve the above objectives.

[Example] Hereinafter, an example of the tensionless plastic tape feeding apparatus according to the present invention will be described based on FIGS. 1 and 2. Here, the same components as in the conventional example described above are provided with the same accessories.

This tension-free plastic tape supply device 8 includes a tape supply section 10 wound with a predetermined length of plastic tape 3;
A presser roll 4 equipped with a drive motor 46 configured with a pair of plastic chises 13 from this chis 1 supply section 10
2. A presser roll part 2 which pinches the plastic tape 3 by 44 and sends it out in the direction in the figure, and the presser roll part 2
A guide roll 48 is arranged to face each other, and a light emitting device is installed between the presser roll section 2 and the guide roll 48 to detect the amount of slack in the plastic tape 3 without contact and outputs the information to the rotation control means 7. Part 5A.

6A, 7A and light receiving sections 5B, 6B, 7B; and a rotation control means 7 having a function of variable speed control of the drive motor 46 based on information from the slack amount detection means 6. These are constructed in the same manner as the above-mentioned conventional example.

It is made up of.

9 is inside the U-shaped slack part of the plastic tape 3,
A tape contact prevention means arranged so as not to come into contact with the plastic tape 3 is shown, and a plurality of air blowing holes 9 a , 9 a + . Accordingly, by blowing air onto the plastic tapes 3, adhesion of the plastic tapes 3 to each other is prevented.

The slack amount detection means 6 includes a light emitting section 5A as shown in FIG.
and a light receiving section 5B, a light emitting section 6A, and a light receiving section 6B.

The light-emitting section 7A and the light-receiving section 7B are arranged in pairs at the top, middle, and bottom, respectively. These light receiving parts 5B, 6B, and 7B are connected to the light emitting parts 5A, 6A, and 7A by plastic tape 3.

When the light from the
In other states, a "high level" signal is output.

Further, the rotation control means 7 is the light receiving section 5B.

As shown in FIG. 3, the rotational speed of the drive motor 46 is variably controlled in response to output signals from 6B and 7B.

Here, the operation of this rotation control means 7 will be specifically explained. First, in the normal state, the output of the light receiving section 7B is "high level" as shown in Figure 2 (■), and the output of the light receiving sections 5B and 6B is [
In this case, the drive motor 46 is controlled to rotate at the same rotational speed V [rpm] as the heating roll 50. In other words, this state is a tension-free state, and the plastic tape 3
The amount of slack is almost insufficient, and the output of the light receiving sections 6B and 7B becomes
The output of the light receiving section 5A is "high level", and the output of the light receiving section 5A is "low level J (
2), the drive motor 46 is rotated at a rotational speed of V+V+ in order to increase the amount of slack in the plastic tape 3.
It is controlled to rotate at [rpm]. On the other hand, if the amount of slack in the plastic tape 3 is too large, the light receiving section 5
B, 6B, and 7B outputs are all “low level” (second
), the drive motor 46 is rotated at a rotational speed of VVt [rPm] in order to reduce the amount of slack in the plastic tape 3.
] is controlled to rotate. In addition, the light receiving parts 5B, 6
If the outputs of B and 7B are all at "high level" (see Figure 2), it is determined that the plastic tape 3 is insufficiently supplied, and an alarm signal E is output to, for example, an external device (not shown).

[Effects of the Invention] Since the present invention is configured as described above, it is possible to provide a plastic tape that can always be fed to a heating roll in a good manner without applying distortion or unnecessary tension to the plastic tape. A tension supply device can be provided.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing an embodiment of the tension-free plastic tape supply device according to the present invention, Fig. 2 is a working cloth for explaining the operation of Fig. 1, and Fig. 3 is a tape-shaped continuous body. FIG. 4 is a perspective view of a tape-shaped electric wire, and FIG. 5 is a configuration diagram of a conventional tensionless plastic tape supply device. １・・・・・・・・・・・・Conducting wire 2・・・・・・
・・・・・・・・・Presser roll part 3.4・・・・・・
... Insulating tape 6 ...... Looseness detection means 7.
......Rotation control means 9...
......Tape contact prevention means 8...
......Tensionless supply device 10...
...... Tape supply section 24 ......
... Tape-shaped continuous body 50.60 ... Heating roll Fig. 2 Fig.

Claims (1)

[Claims] In a tensionless plastic tape feeding device that guides a plastic tape through a U-shaped slack part to first and second heating rolls that are arranged opposite to each other with their axes parallel to each other, A tensionless plastic tape feeding device, characterized in that a cylindrical plastic tape contact prevention means having a plurality of air blowing holes on its outer peripheral surface is arranged in a non-contact manner with the plastic tape.