JPH0595614A - Stripping method for intermediate part of electric wire - Google Patents

Abstract

PURPOSE:To prevent a core from bending at the time of cutters being opened. CONSTITUTION:The covering of an electric wire 600a is separated at a cut position of cutters 103 into a covering part 611 on one side and the covering part 611 on the other side, by moving the electric wire 600a in one direction P in a state of being held by the cutters 103 after the cutting, and the core 603 is exposed. Subsequently the electric wire 600a is moved back a little in the other direct1-on Q along its longitudinal direction, and the cutters 103 are opened. The covering part 611 on one side is separated from the cutters 103 by moving the cutters 103 back a little, and the cutters 103 are opened under this condition. Accordingly, the electric wire 600a is prevented from bending by the opening of the cutters 103, and the bending of the core 603 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for intermediate stripping of electric wires used in the manufacture of harnesses.

[0002]

2. Description of the Related Art FIG. 11 is a perspective view of a main portion of a conventional intermediate strip device, and FIG. 12 is a side view thereof. The intermediate stripping of wires by this device is performed as follows. That is, the electric wire 10 is grasped by the first and second clamps 1 and 2 which are respectively movable in the arrow P and Q directions, and the electric wire 10 is grasped between the clamps 1 and 2 by a pair of upper and lower cutters 3 as shown in FIG. 10 Cut the outer peripheral coating. In this state, as shown in FIG. 14, both clamps 1,
The movement of 2 moves the electric wire 10 along its longitudinal direction with an arrow P.
By a small amount in the direction, whereby the covering portion 11 on one side of the cutting position of the cutter 3 is compressed to the clamp 1 side and separated from the covering portion 12 on the other side, and the core wire is provided between the covering portions 11 and 12. Expose 13

[0003]

However, in the above-mentioned conventional intermediate strip method, when the covering portion 11 on one side of the electric wire 10 is compressed by the cutter 3 toward the clamp 1 side,
The covering portion 11 which is a soft material may adhere to the contact surface of the cutter 3 due to the pushing force of the cutter 3. Therefore,
After that, when the cutter 3 is opened with the covering portion 11 attached to the cutter 3 on the upper side, for example, the covering portion 11 on one side is lifted following the cutter 3 as shown in FIG. At the same time, the problem of bending upward occurred.

An object of the present invention is to solve the above-mentioned problems of the prior art and to provide an intermediate stripping method for an electric wire which can prevent the core wire from bending.

[0005]

SUMMARY OF THE INVENTION According to the present invention, the movement of the two clamps causes the covering portion of the electric wire gripped by the first and second clamps to be cut by a pair of cutters between the clamps. By moving the electric wire in one direction along the longitudinal direction thereof to expose the core wire by separating the covering portion on one side from the cutting portion of the pair of cutters from the covering portion on the other side, the pair In order to achieve the above object, an electric wire intermediate strip method in which the cutter is opened, and the pair of cutters are opened after the covering portion on one side of the electric wire is separated from the covering portion on the other side. Previously, the electric wire is returned in the other direction along the longitudinal direction by the movement of the both clamps, and the covering portion on the one side adhered to the cutter at the time of cutting is removed. So that away from Potter.

[0006]

According to the electric wire intermediate stripping method of the present invention, after the covering portion on one side of the electric wire is separated from the covering portion on the other side, the electric wire is moved in the other direction along the longitudinal direction before the cutter is opened. Since it is set back, the covering part on one side attached to the cutter will be separated from the cutter when separating the covering part, and when the cutter is opened, the electric wire will not bend and follow the cutter. No bending of the core wire is prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing a harness manufacturing apparatus to which an electric wire intermediate stripping method according to an embodiment of the present invention can be applied, FIG. 2 is a side view of the apparatus, and FIG. 3 is a plan view of the apparatus. FIG. 4 is also a perspective view of the main part of the device. As shown in these figures, this device has two electric wires 600a,
The electric wire feeding means 50 for intermittently feeding 600b at the same time, the cutter portion 100, the first and second clamping means 250 which are respectively movable in the three-dimensional directions and capable of grasping and releasing the electric wires 600a, 600b. 350 and the first
And second terminal crimping means 400 and 500 and discharging means 550. In this device, as shown in FIG. 5, the terminals 602 are crimped to both ends, and the harness in which the core wire 603 is exposed by peeling off the covering portion of the intermediate strip region is sequentially manufactured two by two. There is.

First, the electric wire feeding means 50 is provided with a pair of upper and lower conveying portions 51, 51 sandwiching the electric wire feeding lines Xa, Xb, and both conveying portions 51, 51 are pivotally connected to one end thereof. The length measuring rollers 52, 52 are configured to be swingable about a rotation axis of the rollers. Then, both transport units 5
Feed rollers 53 that are pivotally connected to the other ends of
When the electric wire feeding motor 60 (see FIG. 3) is driven in a state in which both the conveying units 51, 51 are swung so that the two electric wires 600a, 600b are sandwiched by 53, both feeding rollers 53, 5
3 rotate in opposite directions and the two electric wires 600a, 6
00b is configured to be simultaneously fed in the arrow P direction along the electric wire feeding lines Xa and Xb.

First and second clamping means 250,3
Reference numeral 50 designates first and second clamps 200 and 300 capable of gripping and releasing the electric wires 600a and 600b, respectively, and first and second clamps 200 and 300 respectively movably supporting the first and second clamps 200 and 300 in a three-dimensional direction. The second clamp moving means 251 and 351 are provided. In the first and second clamp moving means 251, 351, the base 2
The left and right moving parts 202 and 302 are movably supported by 01 and 301 respectively in the left and right directions indicated by arrows R and S, and the left and right moving parts 202 and 302 have front and rear moving parts 203 and 303 respectively. It is supported so as to be movable in the front-rear direction indicated by Q. Further, the first and second clamps 200 and 300 are supported by the front-rear moving portions 203 and 303 so as to be able to move up and down in the vertical direction indicated by the arrows T and U. Also,
The left and right moving units 202 and 302 are configured to move in the left and right directions via the power transmission mechanisms 204a and 304a by driving the motors 204 and 304 attached to the bases 201 and 301, respectively. Further, the front-rear moving unit 20
3, 303 are configured to move in the front-rear direction by driving a motor (not shown).

As shown in FIG. 4, the first clamp 200
The wire insertion holes 210 and 210, through which the electric wires 600a and 600b to be fed along the electric wire feeding lines Xa and Xb, can be inserted, are formed in the electric wires, and the electric wires that pass through the insertion holes 210 and 210, respectively. It is configured such that each of 600a and 600b can be grasped and released.

The second clamp 300 has two electric wires 60.
0a, 600b, respectively, and two substantially L-shaped fixed claws 306, 306 arranged to face each other, and a wire feeding line X for each horizontal part of the fixed claws 306, 306.
Movable claws 307 and 307 and movable claws 307 and 307 that are attached to be movable back and forth in the left-right direction orthogonal to a and Xb
Cylinders 308, 308 for driving the respective cylinders back and forth
And have. Then, with the electric wires 600a and 600b arranged between the vertical portions of the fixed claws 306 and 306 and the movable claws 307 and 307, respectively, the cylinder 3
When the movable claws 307 and 307 are respectively advanced by the drive of 08 and 308, the fixed claws 306 and 306 and the movable claw 30 are moved.
The electric wires 600a and 600b are gripped by the wires 7 and 307, respectively, and the gripping of the wires 600a and 600b is released when the movable claws 307 and 307 retract.

The cutter unit 100 is an electric wire feeding line X.
a, the first and second clamps 200 on Xb,
It is arranged between 300 and the cutter body 101
(FIG. 1) and a pair of cutters 103 arranged vertically with the electric wire feeding lines Xa and Xb interposed therebetween. A pair of cutters 103 are attached to the cutter body 100 in the vertical direction T,
Each of the cutters 103 is movably supported along U, and is configured so that a pair of cutters 103 are driven to move toward and away from each other by a driving unit (not shown) to open and close.

As shown in FIGS. 1 to 3, the discharging means 5
Reference numeral 50 denotes a support column 551 and a rail 55 fixed to the upper end of the support column 551 and arranged along the left-right direction indicated by the arrows R and S.
2 and a discharge clamp 553 movably supported on the rail 552 along the rail longitudinal direction. The discharge clamp 553 is configured so as to be able to simultaneously grip and release the two cutting electric wires described below, and is moved in the left-right direction along the rail 552 by a driving unit (not shown).

In this harness manufacturing apparatus, each of the above-mentioned drive units is connected to a control means (not shown), and the drive of each drive unit is controlled based on the output signal from the control means. The operation as described is performed.

First, the first and the second before the operation is started.
Clamps 200 and 300 are respectively the electric wire feeding line X
a and Xb, and electric wires 600a and 600, respectively.
It is assumed that the grip on b is released.

From this state, when an operation start command is given to the control means, the feeding roller 53 of the electric wire feeding means 50 rotates and the electric wires 600a and 600b move to the electric wire feeding line Xa,
A predetermined amount is fed in the direction of arrow P along Xb.

Next, after the rotation of the feeding rollers 53, 53 is stopped, the electric wires 600a, 6 by the feeding rollers 53, 53
The electric wire 600a, 600b is gripped by the first and second clamps 200, 300 as shown in FIG. 6 while the holding of the electric wire 600b is released (only the electric wire 600a on one side is shown in FIG. 6). The same applies to FIG. 15). As a result, the tip ends of the cutters 103 are arranged corresponding to the upstream end positions in the electric wire feeding direction P in the intermediate strip regions of the electric wires 600a and 600b.

Next, as shown in FIG. 7, electric wires 600a, 6
The outer peripheral coating portion 00b is cut by the cutter 103 so as to be sandwiched from above and below.

Next, as shown in FIG. 8, the first and second clamps 200 and 300 are moved by a predetermined amount (corresponding to the length dimension of the intermediate strip region) along the arrow P direction. As a result, one side of the cutting position of the cutter 103 (first
The cover portion 611 on the clamp 200 side) is separated from the cover portion 612 on the other side (the second clamp 300 side) so as to be compressed toward the first clamp 200 side, and between the cover portions 611 and 612. The core wire 603 is exposed (intermediate strip processing). At this time, the pressing force of the cutter 3 causes the covering portion 611 on one side to adhere to the contact surface of the cutter 103.

After this, as shown in FIG.
0, 300 moves in the direction of arrow Q by a small amount, thereby retracting the wires 600a, 600b by a small amount, and then the cutter 103 is opened as shown in FIG. In this way, as the electric wires 600a and 600b retreat in the direction of the arrow Q, the covering portion 611 on one side is separated from the cutter 103, and the cutter 103 is opened in that state. Therefore, when the cutter 103 is opened, the covering portion on one side is opened. The portion 611 does not follow the cutter 103, and the bending of the core wire 603 is prevented.

After that, an end cutting process of the electric wires 600a and 600b and a terminal crimping process are sequentially performed.

That is, from the state of FIG. 10, the electric wires 600a, 6 by the first and second clamps 200, 300
00b is released and the electric wire 600 is released.
a and 600b are nipped by the feeding rollers 53 and 53, and are fed by a predetermined amount in the arrow P direction along the electric wire feeding lines Xa and Xb.

Next, the electric wires 600a and 600b are gripped again by the first and second clamps 200 and 300, and the electric wires 600a and 600a generated by the feeding rollers 53 and 53.
After the sandwiching of 600b is released, the electric wires 600a and 600b are cut by the cutter 103 (end cutting process of electric wires). Subsequently, the first clamp 200 advances a small amount in the direction of the arrow P, and the electric wires (hereinafter referred to as “residual electric wires”) 600a, 60 held by the first clamp 200 are held.
The entire circumference of the coating portion at the downstream end of 0b is cut by the cutter 103. Then, the first clamp 200 is retracted in the arrow Q direction in the cut state, so that the covering portions at the downstream end portions of the two residual electric wires 600a and 600b are peeled off. Subsequently, the first clamp 200 moves to the right as shown by the arrow R, and the first terminal crimping means 400 moves the
The terminals 602 and 602 are crimped to the downstream stripped ends of the remaining electric wires 600a and 600b, respectively. Then the first
The clamp 200 moves to the left as shown by the arrow S and returns to the original position shown in FIGS.

On the other hand, while the terminal 602 is crimped to the downstream stripping end of the residual electric wires 600a and 600b, the electric wire (hereinafter, referred to as "cutting electric wire") 600a held by the second clamp 300, The coating on the upstream end of 600b is similarly stripped.

Next, the second clamp 300 moves to the left as shown by the arrow S, and the second terminal crimping means 500 pulls the
The terminals 602 are crimped to the upstream stripped ends of the cut electric wires 600a and 600b, respectively.

After that, the two cut wires 600a, 600
b is gripped by the discharge clamp 553, and the grip by the second clamp 300 is released, so that the cut wires 600a and 600b are not clamped by the second clamp 3.
00 to the discharge clamp 553. Subsequently, the discharge clamp 553 is arranged along the rail 552 with an arrow S.
After moving to the left as shown in FIG.
The grip of 0b is released and the wire is discharged to the electric wire discharging portion (not shown).

On the other hand, the second clamp 300, which delivers the cut wires 600a and 600b to the discharge clamp 553,
It is moved to the right as shown by the arrow R and returns to the original position shown in FIGS.

Such operation is continuously repeated,
The coating of the intermediate strip area is stripped off and the terminals 6 are
Two harnesses (see FIG. 5) to which 02 is crimped are sequentially manufactured two by two.

According to the intermediate strip method using this harness manufacturing apparatus, the electric wires 600a and 600b are separated from the covering portion 611 on one side from the covering portion 612 on the other side, and before the cutter 103 is opened, the electric wire 600a is opened. , 6
Since a small amount of 00b is returned in the reverse direction Q, the cutter 103 is opened with the covering portion 611 on one side attached to the cutter 103 being separated from the cutter 103, and the opening of the cutter 103 is followed. Therefore, the electric wires 600a and 600b are not bent, and the bending of the core wire 603 is prevented.

Further, since the bending of the core wire 603 is prevented, the electric wires 600a and 600b are connected to the first clamp 2
When feeding 00 to the second clamp 300, the feeding accuracy can be improved, and at the same time, the measurement accuracy can be improved.

[0031]

As described above, according to the electric wire intermediate stripping method of the present invention, after separating the covering portion on one side of the electric wire from the covering portion on the other side, and before opening the cutter,
Since the electric wire is returned in a small amount in the opposite direction, the covering on one side attached to the cutter when the covering is cut off will be separated from the cutter, and the electric wire will follow the cutter when the cutter is opened. Will not be composed,
The effect that the bending of the core wire is prevented is obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing a harness manufacturing apparatus to which an intermediate stripping method for electric wires according to an embodiment of the present invention is applied.

FIG. 2 is a side view showing the harness manufacturing apparatus.

FIG. 3 is a plan view showing the harness manufacturing apparatus.

FIG. 4 is a perspective view showing a main part of the harness manufacturing apparatus.

FIG. 5 is a perspective view showing a harness manufactured by the harness manufacturing apparatus.

FIG. 6 is a side view for explaining the operation of the harness manufacturing apparatus.

FIG. 7 is a side view for explaining the operation of the harness manufacturing apparatus.

FIG. 8 is a side view for explaining the operation of the harness manufacturing apparatus.

FIG. 9 is a side view for explaining the operation of the harness manufacturing apparatus.

FIG. 10 is a side view for explaining the operation of the harness manufacturing apparatus.

FIG. 11 is a perspective view of a main part of a conventional intermediate strip device.

FIG. 12 is a side view of essential parts showing a conventional intermediate strip device.

FIG. 13 is a side view for explaining the operation of the conventional intermediate strip device.

FIG. 14 is a side view for explaining the operation of the conventional intermediate strip device.

FIG. 15 is a side view for explaining the operation of the conventional intermediate strip device.

[Explanation of symbols]

 103 Cutter 200 First Clamp 300 Second Clamp 600a, 600b Electric Wire 603 Core Wire 611 One Side Cover 612 Other Side Cover

Claims (1)

[Claims] 1. In a state in which a covering portion of the electric wire gripped by the first and second clamps is cut by a pair of cutters between the both clamps, the electric wires are moved along the longitudinal direction by movement of the both clamps. By moving in one direction, the core portion is exposed by separating the covering portion on one side from the cutting portion of the pair of cutters from the covering portion on the other side, and then the pair of cutters is opened. In an intermediate stripping method for electric wires, after separating the covering portion on one side of the electric wire from the covering portion on the other side, before opening the pair of cutters, the electric wires are moved along the longitudinal direction by movement of both clamps. And return to the other direction to separate the covering portion on the one side adhered to the cutter from the cutter at the time of the cutting, the intermediate strike of the electric wire. -Up method.