JPH07169344A - Cutter device for tape-shaped cable - Google Patents

Abstract

PURPOSE:To provide a cutter device for a tape-shaped cable capable of following the meandering of tape-shaped wires, making the position adjustment of a cutter blade on operation unnecessary, and accurately cutting at a specified dividing position. CONSTITUTION:When a tape-shaped cable 1 meanders, a groove-formed block 34 follows the meandering, and a base table 33 and a cutter blade 42 freely move in the width direction. Thereby, the dividing position does not go wrong. Since the edge of the cutter blade 42 enters at a specified slant angle to the coating of the tape-shaped cable 1, the imbalance of friction resistance producing on entering on both surfaces of the cutter blade 42 is eliminated, and the meandering of the tape-shaped cable 1 does not appear, and the divided tape- shaped cable 1 with high dimensional accuracy can be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape-shaped electric wire cutter device for continuously dividing a continuously manufactured multi-core flat cable into a predetermined number of flat cables in the longitudinal direction.

[0002]

2. Description of the Related Art A tape-shaped electric wire having a large number of cores, which is cut by using the tape-shaped electric wire cutter device of the present invention, is shown in FIG. 6 proposed by the present inventors as Japanese Patent Application No. 4-36750. It is manufactured by the tape-shaped electric wire manufacturing apparatus 100. In this figure, in order to manufacture the tape-shaped electric wire 1, for example, 10 conductive wires 2 arranged in parallel in the longitudinal direction are attached with insulating plastic tapes 3 and 4 coated with fusible adhesives on both surfaces, respectively. 2 and each plastic tape 3,
4 to form a tape-shaped continuous body. In this case, the primary heating roller 5, which temporarily fixes the conductive wire 2 and the respective plastic tapes 3, 4 so as not to cause a positional deviation or a wrinkle between the two plastic tapes 3, 4 attached by sandwiching the conductive wire 2.
6, a secondary heating roller 7 for firmly fixing the temporarily fixed conductive wire 2 and the plastic tapes 3, 4 to each other.
8 is provided.

A tape-shaped electric wire manufacturing apparatus 100 as described above.
Tape-shaped electric wire 1 manufactured with high accuracy and yield
Is actually, for example, 50 conductors arranged in parallel,
This is divided into products, for example, 15 cores, 24 cores, and 11 cores, by a cutter device 20 having a cutter blade 21 in the longitudinal direction and commercialized.

That is, in the example of FIG. 2, as shown in FIG.
The tape-shaped electric wire 1 is divided in the longitudinal direction by the cutter blade 21 held by the cutter device 20, and is cut into a predetermined length by the end cutter 28 for commercialization. In this example, the tape-shaped electric wire 1 is divided into two cores, four cores, and four cores in the longitudinal direction.

Next, a more detailed overall structure of the conventional cutter device 20 is shown in FIG. In FIG. 8, in the cutter device 20, a first screw shaft 23 is erected on a tape-shaped electric wire receiving base 22 so as to be rotatable in a horizontal plane. This first screw shaft 2
A slide piece 24 is screwed onto the slide piece 3, and one end of a second screw shaft 25 in the horizontal direction is fixed to the slide piece 24.
A plurality of cutter holders 26 for holding the cutter blade 21 are screwed onto the second screw shaft 25. The cutter blade 21 is fixed to the cutter holder 26 by screws (not shown). Therefore, by adjusting the position of the cutter holder 26 on the second screw shaft 25 to the left or right, the dividing line position of the tape-shaped electric wire 1 traveling on the tape-shaped electric wire support 22 can be determined.

In the tape-shaped electric wire cutter device 20 having the above-described structure, when the tape-shaped electric wire 1 is divided into a predetermined number of cores, first, the cutter holder 26 is moved to a predetermined dividing position. Move left and right to adjust. Then the first
The handle 27 provided on the upper end of the screw shaft 23 is rotated to lower the slide piece 24, and the cutter blade 21 held by the cutter holder 26 is inserted into the coating 1a of the tape-shaped electric wire 1. In this way, the tape-shaped electric wire 1 is continuously taken up by the take-up roller (not shown),
It will be divided into a predetermined width in the longitudinal direction.

Here, what is particularly important is the accuracy of the tab width and the full width of the tape-shaped electric wire 1. This is because the tape-shaped electric wire 1 divided into a predetermined width is often used by inserting it into the housing of a connector such as an electronic device. , Because high dimensional accuracy is required.

However, in the conventional cutter device 20, it is difficult to completely prevent the continuous tape wire from meandering in the longitudinal direction due to the mechanism of the device itself. Since this meandering phenomenon naturally causes a deviation in the original dividing line position, conventionally, the position of the cutter blade 21 is monitored and finely corrected while the tape-shaped electric wire manufacturing apparatus is operating. However, this is not preferable because the dimensions vary within one lot. Furthermore, in order to increase the yield, as long as the tape-shaped electric wire manufacturing equipment permits, since multiple strips are made by long length and multi-division, if the dimension of one place is wrong, the accuracy of the adjacent products will be affected. ,
In this case, individual adjustment becomes difficult, and a large number of defective products occur.

[0009]

As described above, the cutter device in the conventional tape-shaped electric wire manufacturing apparatus has the following problems to be solved in summary. (1) If the tape-shaped electric wire meanders, if left unattended, the position of the dividing line will be misaligned. (2) Since the position of the cutter blade is artificially moved and the dividing line position is adjusted while the tape-shaped electric wire manufacturing device is operating, the work requires skill and the burden on the operator. Is big. (3) It is difficult to cope with the processing accuracy of the connector, and once the adjustment is incorrect, a large number of defective products are generated, resulting in high cost.

The present invention has been made by paying attention to the above points, is not affected by the meandering of the tape-shaped electric wire, does not require the position adjustment of the cutter blade during operation, and is high at a predetermined dividing line position. It is an object of the present invention to provide a high-yield tape-shaped electric wire cutter device that can be accurately cut.

[0011]

SUMMARY OF THE INVENTION A tape-shaped electric wire cutter device of the present invention is a grooved block provided with a guide groove that conforms to the unevenness of the coating surface of a tape-shaped electric wire in which a plurality of conductors are arranged in parallel in the longitudinal direction. And a base on which the grooved block is placed and which is movable in the width direction of the tape-shaped electric wire, and a plurality of cutter blades which are positioned on the base and cut the tape-shaped electric wire in the longitudinal direction. A cutter holder, which is held at a constant interval and is capable of moving up and down on the tape-shaped electric wire, is provided. Further, the cutter blade held by the cutter holder has a certain inclination angle with respect to the tape-shaped electric wire.

[0012]

In the above-mentioned tape-shaped electric wire cutter device, when the tape-shaped electric wire meanders, the grooved block follows the meandering and both the base and the cutter blade freely move in the width direction. For this reason, the positional relationship between the cutter blade and the tape-shaped electric wire does not change, and the dividing line position is not misaligned. Further, since the cutter blade is cut at a predetermined inclination angle with respect to the coating of the tape-shaped electric wire, the unevenness of the friction resistance at the time of cutting on both sides of the cutter blade is eliminated, and the meandering of the tape-shaped electric wire is not caused. It is possible to obtain a highly accurate tape-shaped electric wire that has been individually divided.

[0013]

An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view of a tape-shaped electric wire cutter device of the present invention, and FIG. 2 is a side view thereof. In these drawings, the tape-shaped electric wire cutter device 30 is generally configured as follows.

A base 33 is mounted on the lowermost mounting base 31 via a bearing 32 (see FIG. 2) so as to be freely movable in the width direction of the tape-shaped electric wire 1. In addition,
This slide mechanism will not be described in detail, but the base 3
As long as the tape 3 can be moved in the width direction of the tape-shaped electric wire 1, the bearing 32 is not limited to the above, and other alternative parts may be used.

On the base 33, four grooved blocks 34 are fixed at predetermined intervals. On the upper surface of these grooved blocks 34, a plurality of grooves 35 are formed at a pitch substantially corresponding to the unevenness bulging on the coating surface of the tape-shaped electric wire 1. In the present embodiment, the depth of the groove 35 is about 0.5 mm, which is slightly larger than the unevenness of the tape-shaped electric wire 1.
And In the first space L1 formed between the grooved blocks 34, 34, two guide rollers 36 move up and down. That is, one end of each guide roller 36 is fixed to the slide piece 37.
Is screwed onto the screw shaft 38. The slide piece 37 is housed in a guide rail (not shown) on the wall 39, and its rotation is restricted.

On the other hand, the upper end of the screw shaft 38 is loosely fitted in a receiving portion 40 which is projected horizontally from the wall body 39. A knob 41 is fixed to the end of the screw shaft 38.
Therefore, by rotating the knob 41 clockwise, for example, as shown by the arrow, the slide piece 37 regulated by the guide rail descends. Following the lowering of the slide piece 37, the guide roller 36 descends, and the two guide rollers 36 press the coating surface of the tape-shaped electric wire 1. As a result, a predetermined tension is applied to the tape-shaped electric wire 1 traveling in the arrow P direction.

On the other hand, the cutter blade 42 and the cutter holder 43 can be raised and lowered with respect to the inside of the second space L2 formed in the substantially central portion of the base 33. That is, the cutter holder 43 is fixed to the horizontal arm 44, and one end of the horizontal arm 44 is attached to the slide piece 45. The slide piece 45 is screwed into a screw shaft 46, and the slide piece 45 is housed in a guide rail (not shown) on the wall body 39 as described above, and its rotation is restricted. Further, the upper end of the screw shaft 46 is inserted into the receiving portion 47, and the knob 48 is formed at the end of the screw shaft 46. Therefore, by rotating the knob 48 clockwise, for example, in the same manner as described above, the slide piece 45 is lowered, and the horizontal arm 44 and the cutter holder 43 are lowered following the slide piece 45.

FIG. 3 is a side view of only the cutter holder 43. As shown in FIG. 3, the cutter blade 42 held by the cutter holder 43 has a structure in which it is positioned and held at a certain angle with respect to the cutter holder 43.

In FIG. 4, the cutter blade 42 is a tape-shaped electric wire 1.
The electric wire sectional view at the time of cutting is shown. That is, as shown in the enlarged view of FIG. 4, the cutter blade 42 is fixed to the cutter holder 43 so that the cutter blade 42 is cut at an inclination angle θ with respect to the surface of the tape-shaped electric wire 1. The cutter blade 42 has an inclination angle θ
Is held at a tilted angle, the vertical line V. An approach angle β that is bilaterally symmetrical with respect to L can be obtained. As a result, when the blade tip 42A enters the tape-shaped electric wire 1, it is possible to avoid an imbalance in frictional resistance on the blade tip surface, and as a result, meandering of the tape-shaped electric wire 1 is suppressed as much as possible.

Next, the operation of the tape-shaped electric wire cutter device of the present invention will be described with reference to the perspective view of the entire main part of the device shown in FIG. For example, a tape-shaped electric wire 1 fed from a tape-shaped electric wire manufacturing apparatus as shown in FIG.
Is a guide roller 49, 50 and a tension roller 51.
Is guided in the direction of the arrow P and flows into the tape-shaped electric wire cutter device 30. After that, the tape-shaped electric wire 1 rides on the grooved block 34, and the other end is wound around a drum (not shown) via the guide roller 52.

The coating surface of the tape-shaped electric wire 1 placed on the grooved block 34 is pressed by the peripheral surfaces of the two front and rear guide rollers 36. As a result, a certain amount of tension is applied to the tape-shaped electric wire 1 between the guide rollers 36, 36, and at the same time, the projections and depressions bulged on the coating surface of the tape-shaped electric wire 1 fit into the grooves 35 of the grooved block 34. Acts to maintain the state of being.

On the other hand, substantially the central portion of the tape-shaped electric wire 1 to which a constant tension is applied by the guide rollers 36, 36, that is,
The cutter blade 42 is provided in the second space L2 (see FIG. 1) formed by the adjacent grooved blocks 34, 34 on the center side.
The cutter holder 43 holding the is lowered. In this case,
The cutter blade 42 has its cutting edge 42A as described in FIG.
Enters the tape-shaped electric wire 1 at a predetermined inclination angle θ, and the perpendicular line V. It is possible to obtain the approach angle β which is symmetrical with respect to L, and it is possible to avoid the meandering of the tape-shaped electric wire 1 due to the difference in frictional resistance on both surfaces of the cutting edge.

On the other hand, when the tape-shaped electric wire 1 meanders due to other factors, the grooved blocks 34, 34 are pushed in the width direction of the tape-shaped electric wire. At this time, the sliding mechanism in the width direction such as the bearing 32 shown in FIG.
At the same time, the cutter blade 42 and the cutter holder 43 positioned on it follow the meandering and move in the width direction.
For this reason, the relative positional relationship between the cutter blade 42 and the tape-shaped electric wire 1 does not change, and the dividing line position is not deviated, and a divided tape-shaped electric wire with high dimensional accuracy can be obtained.

The present invention is not limited to the above embodiments. In the above embodiment, the cutter blade 42 is held so as to be inclined with respect to the cutter holder 43, but the cutter blade 42 is held so as to be perpendicular to the cutter holder 43, and the cutter holder 43 itself is inclined at a certain angle. You can In addition, as a result of various experiments, the approach angle β of the blade edge 42A
Was most suitable for uniforming the frictional resistance on both sides of the cutting edge 42A.

Therefore, in this range, the tape-shaped electric wire 1 can be cut linearly and no meandering is caused.
Further, the number and shape of the grooved blocks, the position and number and shape of the cutter blade may be freely changed, and the cutter holder may be raised and lowered by using an air cylinder or the like without using screws.

[0026]

In the tape-shaped electric wire cutter device of the present invention described above, when the tape-shaped electric wire meanders, the grooved block follows the meandering and moves the base and the cutter blade in the width direction. Does not cause deviation in the line position. Also, if the cutter blade enters the tape-shaped electric wire at a predetermined inclination angle, the unevenness of the friction resistance at the time of entering on both sides of the cutter blade is eliminated, and the tape-shaped electric wire does not meander, and the dimensional accuracy is improved. It is possible to obtain a split tape-shaped electric wire with high efficiency.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of a tape-shaped electric wire cutter device of the present invention.

FIG. 2 is a side view of the cutter device.

FIG. 3 is a front view showing a cutter blade and a cutter holder in the cutter device.

FIG. 4 is a front view for explaining an approach angle of a cutter blade into a tape-shaped electric wire.

FIG. 5 is a perspective view showing an overall configuration for explaining the operation of the tape-shaped electric wire cutter device.

FIG. 6 is a perspective view showing a part of a tape-shaped electric wire manufacturing apparatus.

FIG. 7 is an explanatory diagram of a cutter device for dividing the tape-shaped electric wire manufactured by the above device.

FIG. 8 is an overall configuration diagram of the conventional cutter device.

[Explanation of symbols]

 1 Tape-shaped electric wire 30 Cutter device 31 Mounting base 33 Base 34 Grooved block 36 Guide roller 37, 45 Slide piece 38, 46 Screw shaft 42 Cutter blade 42A Blade tip 43 Cutter holder 44 Horizontal arm

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[Procedure amendment]

[Submission date] March 25, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

However, in the conventional cutter device 20, it is difficult to completely prevent the continuous tape wire from meandering in the longitudinal direction due to the mechanism of the device itself. Since this meandering phenomenon naturally causes a deviation in the original position of the dividing line, conventionally, the position of the cutter blade 21 is monitored and finely corrected while the tape-shaped electric wire manufacturing apparatus is operating. However, this is not preferable because the dimensions vary within one lot. Furthermore, in order to increase the yield, as long as the tape-shaped electric wire manufacturing equipment permits, since multiple strips are made by long length and multi-division, if the dimension of one place is wrong, the accuracy of the adjacent products will be affected. ,
In this case, individual adjustment becomes difficult, and a large number of defective products occur.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

On the base 33, four grooved blocks 34 are fixed at predetermined intervals. On the upper surface of these grooved blocks 34, a plurality of grooves 35 are formed at a pitch substantially corresponding to the unevenness bulging on the coating surface of the tape-shaped electric wire 1. In the present embodiment, the depth of the groove 35 is about 0.5 m, which is slightly larger than the unevenness of the tape-shaped electric wire 1.
The m and the width are slightly larger (0.5 mm to 1.0 μm).
In the first space L1 formed between the grooved blocks 34, 34, two guide rollers 36 move up and down. That is, one end of each guide roller 36 is fixed to the slide piece 37, and the slide piece 37 is screwed onto the screw shaft 38. The slide piece 37 is housed in a guide rail (not shown) on the wall 39,
The rotation is restricted.

Front page continued (72) Inventor Kazuhiro Tanimoto 2-1-1 Oda Sakae, Kawasaki-ku, Kanagawa Prefecture No. 1 Showa Cable Denki Co., Ltd. (72) Inventor Hiromi Hirai 3-13-4 Hikarigaoka, Sagamihara City, Kanagawa Prefecture

Claims (2)

[Claims] 1. A grooved block provided with a guide groove that conforms to the unevenness of the coating surface of a tape-shaped electric wire in which a plurality of conductors are arranged in parallel in the longitudinal direction, and the grooved block is placed on the tape-shaped electric wire. And a plurality of cutter blades that are positioned on the base and that are positioned on the base and that cut the tape-shaped electric wire in the longitudinal direction are held at regular intervals, and can be moved up and down on the tape-shaped electric wire. A tape-shaped electric wire cutter device comprising a cutter holder. 2. The cutter device for a tape-shaped electric wire according to claim 1, wherein a cutter blade is held by the cutter holder so as to have a constant inclination angle with respect to the tape-shaped electric wire.