JP2000348552A - Method and device for trimming type wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To establish a tape wire trimming method, whereby the distance from the side edge of each insulating tape to the conductor is within an allowable range. SOLUTION: A tape wire 1 has a structure when a two-side covering part 5 where the two surfaces of a conductor 2 are covered with insulating tapes 3 and 4 and a single side covering part 6 where only one surface of the conductor 2 is covered with the tape 3, are formed alternately in the longitudinal direction, and when this wire 1 is to be trimmed into specified dimensions, a tape wire 1a is previously formed in which the shorter side dimensions of the insulating tapes 3 and 4 are greater than the specified dimensions, and the margins in shorter direction 14 and 15 of the tapes 3 and 4 cut out by blanking the tape wire 1a, using a metal die.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a tape wire in which a conductor is covered with an insulating tape, and more particularly to a method of shaping a tape wire in which a distance from a side edge of the insulating tape to the conductor is within an allowable range. And its device.

[0002]

2. Description of the Related Art FIG. 6 shows a shape of a tape electric wire to be shaped according to the present invention viewed from above one side, and FIG. 7 shows a cross section along the longitudinal direction, that is, a cross section taken along the line AA 'of FIG. . In the tape electric wire 1 illustrated in these figures, a plurality of strip-shaped conductors 2 are arranged in one plane, and an insulating tape 3 is provided over the entire back surface of the plane formed by the conductors 2, and an insulating tape is provided on the front surface. The covering portion provided with the tape 4 and the uncovered portion not provided with the insulating tape 4 are repeated in the longitudinal direction in a constant pattern. In other words, the double-sided coated portion 5 in which the front and back surfaces of the conductor 2 are coated with the insulating tape, and the single-sided coated portion 6 in which only one surface (the back surface in the illustrated example) of the conductor is coated with the insulating tape are alternately formed in the longitudinal direction. Have been. Since the conductor 2 is exposed on the surface without the insulating tape 4 in the single-sided coated portion 6, when viewed from above, the insulating tape 3 and the conductor 2 on the back surface are alternately arranged at a constant pitch in the short direction of the tape wire.

In this type of tape electric wire, the center of the one-side coating portion 6 in the longitudinal direction of the tape electric wire is cut in a step after the insulating tapes 3 and 4 are attached to the conductor 2. FIG. 8 shows a shape of the tape wire as viewed from above on one side, and a cross section along the longitudinal direction.
That is, FIG. 9 shows the shape of the BB ′ cross section in FIG. In the short tape wire 1 thus separated, the one-side covering portions 6 at both ends in the longitudinal direction of the tape wire serve as fitting portions to the connector.

[0004] The maximum thickness of the double-sided covering portion 5 of the tape electric wire 1 is very thin, about 50 to 400 µm. for that reason,
For the purpose of reinforcing the back surface of the single-sided coating portion 6, that is, the surface to which the insulating tape 3 is attached, a reinforcing plate 7 such as a plastic plate having a thickness of about 200 μm is attached to the insulating tape.

[0005]

When manufacturing a tape electric wire, first, a wide tape electric wire in which a plurality of tape electric wires 1 shown in FIG. 6 are arranged in parallel is manufactured, and thereafter, a thin razor-shaped blade is provided. The tape wires 1 are cut one by one using a method of cutting with a slitter or the like.

In this case, the distance from the side edges of the insulating tapes 3 and 4 to the center of the outermost conductor 2, that is, the distances e1 and e2 in FIG. In addition, there is a problem that the deviation from the allowable value frequently occurs due to the meandering of the tape wire 1 in the manufacturing line, and the product defect rate increases.

The tape wire 1 is spaced from the edge surfaces 8 and 9 on both sides of the one-sided coated portion 6, that is, from the center of the outermost conductor 2 by a distance e.
The connector is fitted to the connector based on the surfaces 8 and 9 located at 1 or the distance e2. Therefore, when the distance e1 and the distance e2 of the manufactured tape electric wire 1 deviate from an allowable value for the ideal distance E1 or the distance E2, the metal contact portion inside the connector does not contact the conductor, resulting in poor conduction. Therefore, the distance e1
A product whose distance e2 is out of the allowable value is defective.

[0008] In the production line of the tape wire 1, since the line speed is to be increased as much as possible in order to improve productivity, it is very difficult to suppress the meandering of the tape wire 1. If the line speed is reduced in order to suppress this meandering, the reduction in productivity will increase the product price and reduce the market competitiveness.

Accordingly, an object of the present invention is to solve the above problems and to provide a method and an apparatus for shaping a tape electric wire in which a distance from a side edge of an insulating tape to a conductor is within an allowable range.

[0010]

In order to achieve the above object, a method according to the present invention comprises a double-sided coated portion in which both surfaces of a conductor are coated with insulating tape and a single-sided coated portion in which only one surface of the conductor is coated with insulating tape. When shaping the tape wire formed alternately in the longitudinal direction to the specified size, a tape wire in which the transverse dimension of the insulating tape is larger than the specified size is formed in advance, and the tape wire is punched with a mold. By doing so, the excess of the insulating tape in the width direction is cut off.

The tape wire may be photographed at the place where the die is punched, and the image may be processed to set a cutting line for the insulating tape, and the die may be aligned with the cutting line to perform the punching. .

The exposed conductor surface of the tape wire may be photographed, a conductor position in the short direction of the tape wire extracted from the image, and a cut line of the insulating tape may be set at a predetermined distance from the conductor position.

[0013] The tape wire may be photographed together with a fixed point in the background, and a cutting line position of the insulating tape may be indicated based on the fixed point, and the mold may be moved from the fixed origin position to the cutting line position. .

Further, according to the present invention, there is provided a tape in which a double-sided coated portion in which both surfaces of a conductor are coated with an insulating tape and a single-sided coated portion in which only one surface of a conductor is coated with an insulating tape are alternately formed in a longitudinal direction. In a shaping apparatus for shaping an electric wire to a prescribed size, a traveling means for traveling in a longitudinal direction a tape electric wire in which a short dimension of an insulating tape is formed larger than a prescribed dimension in advance, and a die provided in the course of this traveling is punched. Photographing means for photographing the tape wire at a place; setting means for setting a cutting line of the insulating tape by processing the image; and a metal for moving the mold in the short direction of the tape wire according to the setting. And a mold moving means.

A boundary sensor for detecting a boundary between the double-sided coated portion and the single-sided coated portion is provided. After the boundary is detected, the tape wire is caused to travel a predetermined distance to thereby obtain a desired longitudinal portion of the tape wire. May be guided to a place where the die punching is performed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

As shown in FIG. 1, according to the shaping method of the present invention, a tape wire 1a in which the short-side dimensions of the insulating tapes 3 and 4 are slightly larger than a specified size is formed in advance, and this tape wire 1a is The insulation tapes 3 and 4 are cut off in the transverse direction by punching out with a mold. Specifically, insulating tapes 3 and 4
The conductor exposed surface of the tape wire 1a having the width in the transverse direction larger than the specified size is photographed at the place where the die is punched together with the fixed points 10 and 11 in the background, and the conductor in the transverse direction of the tape wire is obtained from the image. The center positions 12 and 13 are extracted, and a predetermined distance E from the conductor center positions 12 and 13 is extracted.
The cutting lines 14 and 15 of the insulating tape are set at 1 and E2, and the positions of the cutting lines of the insulating tape are indicated with reference to the fixed points 10 and 11 and the die (not shown) is fixed to the cutting line position. (Not shown), the die is aligned with the cutting lines 14 and 15, and punching is performed. By this method, for example, the excess (hatched portions in the drawing) 16, 17 of the insulating tapes 3, 4 on both sides in the short direction of the tape wire of the one-side coating portion 6 are cut off.

This ensures that the distance from the side edge of the insulating tape to the conductor falls within the allowable range for the ideal distance E1 or E2. Therefore, the product defect rate can be kept low, and these distances can be managed, so that the line speed of the production line can be increased.

Next, a shaping apparatus for continuously shaping by the shaping method of the present invention will be described.

As shown in FIG. 2, this shaping apparatus comprises:
A long tape in which a double-sided covering portion 5 in which both surfaces of the conductor 2 are covered with insulating tapes 3 and 4 and a single-sided covering portion 6 in which only one surface of the conductor 2 is covered with an insulating tape 3 are alternately formed in the longitudinal direction. A shaping device for continuously shaping an electric wire (1) to a specified size for each desired longitudinal portion, wherein a tape wire (1a) in which the short-side dimensions of the insulating tapes (3, 4) are formed larger than the specified size in the longitudinal direction. Traveling means for traveling (see FIG. 4);
A photographing means 22 for photographing the tape wire 1a at a die punching place 21 provided on the way of the traveling, and a processing line for cutting off the insulating tapes 3 and 4 (see FIG. 1).
And a mold moving means 24 for moving the mold 23 in the short direction of the tape wire 1a in accordance with the setting.
A boundary sensor 26 for detecting a boundary 25 between the double-sided covering portion 5 and the single-sided covering portion 6; and a tape wire 1a running a predetermined distance lp (see FIG. 4) after the boundary 25 is detected. Traveling control means for guiding a desired longitudinal portion of the electric wire 1a to the die punching place 21. The setting means and the traveling control means can be realized by a computer.

As shown in FIG. 3, the mold moving means 24
Can be realized by a uniaxial movement table 31 that moves in the short direction of the tape wire 1a. The one-axis moving table 31 is provided below the tape wire 1a so as to cross the running tape wire 1a. The uniaxial movement table 31 includes a punching device 32 including a mold 23, an ITV camera 33 constituting the photographing unit 22, and an I (not shown).
A lighting device for a TV camera is mounted. The punching device 32 and the ITV camera 33 are arranged so as to sandwich the tape wire 1a from both sides. The ITV camera 33 is supported by a column 34 and faces downward, and the tape electric wire 1
a can be photographed from directly above. Tape wire 1a
Is run with the conductor exposed surface facing upward, so that the ITV camera 33 can photograph the conductor exposed surface.

As shown in FIG. 4, the running means of the tape wire 1a includes a sending device 41, a sending dancer roll 42, a take-up pinch roller 43, a take-up dancer roll 44, and a take-up device 45.
And several rollers with no sign.
Numeral 46 denotes a mold setting section in which the mold 23 and the photographing means 22 are set.
6 is included. The boundary sensor 26 is installed immediately upstream of the mold installation section 46. 47 is an image processing device. 48 is a computer. Although not shown, a travel sensor for detecting the travel distance of the tape wire 1a is provided, for example, attached to the take-off pinch roller 43.

Next, the operation of the shaping apparatus will be described.

The tape wire 1a is sent out from the sending device 41 via the sending dancer roll 42. Tape wire 1
Since a is very thin, wrinkles or meanders occur when the tension is too high or the tension fluctuates. Therefore, an appropriate and stable tension is given by the delivery dancer roll 42. Tape wire 1a by take-off pinch roller 43
While traveling, the traveling distance is detected by the traveling sensor. The boundary sensor 26 detects the double-sided coating 5 and the single-sided coating 6
Is detected, a travel lp from the boundary sensor 26 to the die punching location 21 is performed,
The one-sided coated portion 6 of the tape electric wire 1a is cut into
The tape wire 1a is stopped.

Next, the one-axis moving table 31
The V camera 33 is moved to the die punching place 21.
When the ITV camera 33 is at the die punching place 21,
It is assumed that the mold 23 is at the origin position. ITV camera 3
3 is used to photograph the exposed surface of the conductor of the one-sided covering portion 6. The image processing device 47 processes the photographed image to measure the shape. The resection lines 14 and 15 are set by this shape measurement. Based on the shape measurement result, the uniaxial movement table 3
1 moves the punching device 32 to the die punching location 21. At this time, the tape wire 1a is inserted into the punching device 32. Die 23 is cut along cutting lines 14 and 15
, And punching is performed, both sides of the one-side covering portion 6 in the short-side direction of the tape wire are shaped into specified dimensions. The punch residue generated by the punching is sucked by a removing device (not shown).

Thereafter, the one-axis moving table 31 is returned to the original position. The shaped tape wire 1 a is wound up by a winder 45 via a winding dancer roll 44.

In the above operation, the boundary sensor 26 plays an important role in positioning the tape wire in the longitudinal direction. As described above, the double-sided coating portion 5 and the single-sided coating portion 6 are repeatedly formed with a fixed length, but in practice there is variation, and an allowable value for this error is provided. For example, when the length of the double-sided coating 5 is 100 mm, the allowable value of the length of the double-sided coating 5 is about ± 1 mm. On the other hand, the length of the single-sided covering portion 6 is, for example, only 10 mm, and if the allowable value is ± 1 mm, the accuracy is not good. Therefore, if the travel control is performed only by the travel distance of the tape wire 1a without detecting the boundary, the one-sided coated portion 6 is not guided to an accurate position in the die punching place 21 and an error occurs. If the double-sided coating portion 5 where the error reaches the maximum allowable value -1.0 mm is repeated three times, a total of 3 mm error is accumulated, and the accumulated error becomes a large value for the length of the single-sided coating portion 6 of 10 mm. Occurs. Therefore, in the present invention, alignment is performed based on the boundary 25 detected by the boundary sensor 26.

Even if the length of the double-sided covering portion 5 of the tape wire 1a is within the allowable range, if the error from the specified value is large, the boundary sensor 26 is provided every time the tape wire 1a is run. Is used to detect the boundary 25 to perform the alignment. When the error between the length of the double-sided covering portion 5 and the specified value is small, the alignment performed by detecting the boundary 25 may not be performed every time, but may be performed once every n times.

The alignment of the mold 23 will be described in detail. The image processing device 47 converts the image captured by the ITV camera 33 into a single-sided cover 6 as shown in FIG.
Center 12 of the outermost conductor 2 on one side of
The distance e1 'between the fixed point 10 and the conductor center position 13 of the outermost conductor 2 on the other side is measured.
Is measured. The fixed point 10 (11)
May be provided at two places like the fixed points 10, 10a (11, 11a). These fixed points are arranged at a predetermined distance from the mold origin position. Therefore, the distance e1
By measuring ', e2', the distance from the mold origin position (not shown) to the conductor center positions 12, 13 can be measured. The distance lk for moving the mold 23 from the origin position is calculated using the distances e1 'and e2', and the uniaxial movement table 31 is moved based on the distance lk. By punching out the mold 23 in accordance with the cutting lines 14 and 15, the excess 16 and 17 in the short direction of the insulating tapes 3 and 4 are cut off. As a result, the side edges of the insulating tapes 3 and 4 are formed at positions where the distances from the conductor center positions 12 and 13 do not deviate from the allowable values for the ideal distances E1 and E2. The mold moving distance lk is calculated so that the distances from the conductor center positions 12 and 13 to the cutting lines 14 and 15 are equal to each other and do not deviate from an allowable value.

Next, a specific example of the mold 23 will be described.

FIG. 5 shows the concave side of the mold 23. The mold 23 has a concave portion 50 and a concave portion 51 at predetermined positions on a flat surface. The concave portion 50 and the concave portion 51 have a shape in which a rectangular corner is cut straight. Although not shown, the mold 23
A corresponding convex portion is formed on the convex side of. This mold 2
Numeral 3 is for removing the trapezoidal extra 16 and 17 in the short direction shown in FIG.

Next, another embodiment of the present invention will be described in comparison with the shaping apparatus shown in FIGS.

The ITV camera 33 constituting the photographing means 22
Is a uniaxial moving table 31 constituting the mold moving means 24
May be fixed to a place where the movement of the mold 23 is not hindered, and always face the mold punching place 21.

The delivery dancer roll 42 or the take-up dancer roll 44 may be omitted.

The conductor center positions 12, 13 of the outermost conductor 2
If the accuracy of the distance is good, the distance measurement is the distance on one side,
For example, only the distance e1 'may be performed.

In the die punching, it is not necessary to punch out two cut portions at the same time, and the punching may be performed with a time difference. Alternatively, instead of providing a mold for each cut portion, both cut portions may be punched out one by one using a single mold.

The ITV camera 33 and the mold 23 may be moved in the longitudinal direction of the tape wire 1a. In this case, the running tape wire 1a is not stopped without stopping the tape wire 1a.
Photographing and punching can be performed for a.

The number of the fixed points 10 (11) may be one, two, three or more.

The distance between the fixed point 10 and the conductor center position 13 of the outermost conductor 2 on the opposite side may be measured instead of the distance e2 '.

By accurately setting the distance from the mold origin position to the ITV camera 33, the shooting field of view, the shooting angle, the magnification, etc. of the ITV camera 33, the actual position of the object shot on the image, The actual distance corresponding to the distance can be obtained. Thereby, even if the fixed points 10 and 11 are omitted, the conductor center positions 12 and 13 are moved from the mold origin position.
The distance to can be obtained.

The punching shape of the mold may be rectangular or another shape.

Instead of the ITV camera 33, a one-dimensional camera (one-dimensional image sensor) or the like may be used.

The finish inspection is performed by measuring the distance from the conductor center positions 12 and 13 to the side edges of the insulating tapes 3 and 4 after the die is punched by the ITV camera 33 and the image processing device 47. Is also good. This inspection may be a 100% inspection or a sampling inspection.

The shaping apparatus shown in FIGS. 2 to 4 may be inlined, that is, installed in a tape wire manufacturing line.

Instead of fixing the distance between the concave portion 50 and the concave portion 51 in the mold 23, the distance between the concave portion 50 and the concave portion 51 may be made variable by dividing the die 23 into two. Thereby, the conductor 2
In this case, a common mold 23 can be used for the tape wires having different numbers, and the distance between the concave portions can be adjusted. Therefore, when manufacturing a plurality of types having different numbers of conductors, it is not necessary to prepare dies for each type, and it is only necessary to prepare a number of dies smaller than the number of types.

One or more guide rollers may be provided immediately upstream and immediately downstream of the die punching place 21.

Instead of detecting the running distance of the tape wire 1a by a running sensor, the motor of the take-off pinch roller 43
The travel distance may be calculated by using a pulse motor or a servomotor and converting from the number of travel command pulses.

[0048]

The present invention exhibits the following excellent effects.

(1) The distance from the side edge of the insulating tape to the conductor surely falls within the allowable range for the ideal distance E1 or E2. That is, manufacturing accuracy is improved. Therefore, the product defect rate can be kept low.

(2) The distance from the side edge of the insulating tape to the conductor can be managed, and it is expected that the line speed of the manufacturing line can be increased.

[Brief description of the drawings]

FIG. 1 is a plan view of a tape electric wire showing a method of the present invention.

FIG. 2 is a plan view of a shaping apparatus according to an embodiment of the present invention.

FIG. 3 is a three-dimensional view of the shaping device of FIG. 2;

FIG. 4 is a configuration diagram of a traveling unit in the shaping apparatus of FIG. 2;

FIG. 5 is a plan view of a mold used in the present invention.

FIG. 6 is a plan view of the tape electric wire.

FIG. 7 is a sectional view of the tape electric wire.

FIG. 8 is a plan view of a fixed length cut tape wire.

FIG. 9 is a sectional view of the fixed length cut tape electric wire.

[Explanation of symbols]

 1, 1a Tape wire 2 Conductor 3, 4 Insulation tape 5 Double-sided coating 6 Single-sided coating 10, 11 Fixed point 12, 13 Conductor center position 14, 15 Cut line 16, 17 Extra in short direction 21 Die punching place 22 Photographing Means 23 Mold 24 Mold moving means 25 Boundary 26 Boundary sensor 47 Image processing device 48 Computer

Continued on the front page (72) Inventor Osamu Matsuzaki 5-1-1 Hidakacho, Hitachi City, Ibaraki Prefecture Inside the Hidaka Factory, Hitachi Cable Co., Ltd. (72) Inventor Mitsuo Kimoto 4-chome Kawajiri-cho, Hitachi City, Ibaraki Prefecture No. 1 Hitachi Cable Processing Co., Ltd. (72) Inventor Yutaka Tanabe 4-10-1, Kawajiri-cho, Hitachi City, Ibaraki Prefecture Inside Hitachi Cable Processing Co., Ltd. (72) Locker Watanabe 4-10, Kawajiri-cho, Hitachi City, Ibaraki Prefecture No. 1 Hitachi Cable Processing Co., Ltd.

Claims (6)

[Claims] 1. A tape electric wire in which a double-sided covered portion in which both surfaces of a conductor are covered with an insulating tape and a single-sided covered portion in which only one surface of a conductor is covered with an insulating tape are alternately formed in a longitudinal direction, and shaped into a prescribed size. In doing so, a tape wire in which the transverse dimension of the insulating tape is larger than a prescribed size is formed in advance, and the tape wire is punched out with a mold, thereby cutting off excess in the transverse direction of the insulating tape. How to shape the tape wire. 2. An image of the tape wire is taken at a place where the die punching is performed, and an image of the tape wire is processed to set a cutting line of the insulating tape. The method for shaping a tape electric wire according to claim 1, characterized in that: 3. An image of a conductor exposed surface of the tape wire,
Extract the conductor position in the short direction of the tape wire from the image,
3. The method according to claim 1, wherein a cutting line of the insulating tape is set at a predetermined distance from the conductor position. 4. An image of the tape electric wire is taken together with a fixed point in the background, and a cutting line position of the insulating tape is indicated based on the fixed point, and the mold is moved from the fixed origin position to the cutting line position. Claim 1 characterized by the following:
4. The method for shaping a tape electric wire according to any one of items 3 to 3. 5. A tape wire in which a double-sided coated portion in which both surfaces of a conductor are covered with an insulating tape and a single-sided coated portion in which only one surface of a conductor is covered with an insulating tape is alternately formed in a longitudinal direction, is shaped into a prescribed size. In the shaping device, the tape wire in which the width in the short direction of the insulating tape is formed to be larger than the specified size in advance is run, and the tape wire is photographed at a place where the die is punched provided in the middle of the running. And a setting unit for setting a cutting line of the insulating tape by processing the image, and a die moving unit for moving the die in a short direction of the tape wire according to the setting. A tape wire shaping device, characterized in that: 6. A boundary sensor for detecting a boundary between a double-sided coated portion and a single-sided coated portion, and running the tape wire by a predetermined distance after the detection of the boundary, thereby obtaining a desired longitudinal length of the tape wire. 6. The method according to claim 5, wherein a direction part is guided to a place where the die punching is performed.
The tape wire shaping device according to the above.