JPH05268710A - Electric wire semi-strip method - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a method of semi-striping an electric wire 50 in which the entire apparatus can be made compact, the storage place of the electric wire 50 can be saved, and the electric wire 50 can be prevented from being bent during transportation. [Structure] The cutter 201 is attached to the covering portion 62 at the end of the electric wire 50.
The electric wire 50 is retracted in the state of being cut by, and the covering portion 61 on the end side is separated from the remaining covering portion 62. Next, the cutter 201 is opened, the electric wire is further retracted, and then the cutter is closed to cut and remove the extra coating portion 61 protruding from the end of the core wire portion 52 of the electric wire 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for semi-striping an electric wire used in manufacturing a harness or the like.

[0002]

2. Description of the Related Art When manufacturing an electric wire in which a core wire portion at an end is twisted, first, as shown in FIGS.
The electric wire 10 is held by a clamp 1 which is movable on a horizontal plane including the longitudinal direction thereof, and the end portion of the electric wire 10 is fed between the pair of cutters 2 and 2. Subsequently, as shown in FIG. 32, the pair of cutters 2 cut into the covering portion 11 at the end portion of the electric wire 10, and in this state, the electric wire 10 is slightly retracted in the arrow Q direction by the backward movement of the clamp 1. As a result, FIG.
As shown in FIG. 3, the covering portion 12 on the electric wire end side with respect to the cutting positions of the pair of cutters 2, 2 is separated from the remaining covering portion 11 so as not to drop from the core wire portion 13 (semi-strip processing).

Then, after opening the pair of cutters 2 and 2, the electric wire 10 is conveyed and moved, for example, in the lateral direction by the clamp 1, and the end portion of the electric wire 10 which has been subjected to the semi-strip processing is twisted with a core wire as shown in FIG. It is arranged between a pair of upper and lower files 4 and 4 arranged in parallel. Then, as shown by the phantom line in the figure, the covering portion 12 on the end side of the electric wire 10 is sandwiched by the pair of files 4 and 4 from above and below, and in that state, the file 4 on one side is moved leftward along its longitudinal direction. While moving to R, the file 4 on the other side is moved to the right S. As a result, the covering portion 12 on the end side is operated to roll,
With the rolling of the covering portion 12, the core wire portion 13 is twisted and twisted.

[0004]

However, according to the above-mentioned conventional semi-strip method, as shown in FIGS.
As shown in FIG. 4, the electric wire 10 is retracted in the direction of the arrow Q while being cut into the covering portion 11 of the electric wire 10 by the cutter 2 so that the covering portion 12 on the end portion side of the electric wire does not drop from the core wire portion 13 and the remaining covering portion Since the semi-strip process is completed by disconnecting from 11, the coating portion 12 on the wire end portion side largely protrudes in the longitudinal direction of the wire 10 from the end portion of the core wire portion 13.

Therefore, after the semi-strip processing, the electric wire 10
When the wire is conveyed to the core wire twisting device 3 side, it is necessary to secure a wide transfer space for the electric wire 10 so that the covering portion 12 that largely protrudes toward the end of the electric wire 10 does not interfere with other members. Was inviting an increase in size. In addition, when the semi-strip processing step and the core wire twisting step are not continuously performed, it is necessary to secure a wide space for storing the electric wire 10 after the semi-strip processing. Further, there is a high possibility that the protruding coating portion 12 may come into contact with another object and bend the electric wire during the electric wire transportation after the semi-strip treatment.

In view of the above-mentioned problems, the present invention has an object to provide a method of semi-striping an electric wire in which the apparatus as a whole can be made compact, the electric wire can be stored in a small space, and the electric wire can be prevented from being bent during transportation. To do.

[0007]

[Means for Solving the Problems] A technical means for achieving the above-mentioned object is to attach the clamp to the pair of cutters in a state in which the covering portion of the wire end portion grasped by the clamp is cut by the pair of cutters. The electric wire is retracted by a predetermined amount by moving the electric wires away from each other, and the covering portion on the electric wire end side of the cutting position of the pair of cutters is separated from the remaining covering portion, and then the pair of cutters is opened. In the electric wire semi-strip method described above, after separating the covering portion on the end portion side of the electric wire from the remaining covering portion, the pair of cutters are opened, and then the clamp is further moved to the above distance to move the electric wire by a predetermined amount. Retreat,
After that, the pair of cutters are closed to cut the covering portion on the electric wire end portion side that protrudes from the end portion of the core portion of the electric wire.

[0008]

According to the present invention, in a state in which the electric wire is cut into the covering portion by the cutter, the electric wire is retracted to separate the covering portion on the end side from the remaining covering portion, and further, from the end portion of the core portion of the electric wire. Since the excess coating that obstructs the protruding wire end is cut off, it is possible to reduce the protruding amount of the protruding part from the core wire end after semi-strip processing, and transfer the wire to the next process. It is possible to further reduce the space required for transportation and reduce the size of the entire apparatus. In addition, even when storing the electric wire after the semi-strip processing, the storage space can be saved. Further, the possibility of contact with other objects during transportation can be reduced, and bending of the electric wire can be effectively prevented.

[0009]

EXAMPLES <A. Structure of Embodiment> FIG. 1 is a schematic plan view showing a harness manufacturing apparatus to which a method for semi-striping electric wires according to an embodiment of the present invention can be applied.

As shown in the figure, this harness manufacturing apparatus includes a length measuring unit 100 and a cutter unit 200.
A rear clamp 250, a twisting unit 300, a flux unit 350, a solder unit 400,
It has a terminal crimping unit 450 and moving means 500, 550. Then, in this device, the two long electric wires are subjected to various treatments as described below,
As shown in FIG. 9, the coating portions on both ends are stripped off, and the core wire portion 52 on one end side is twisted to attach the solder 403, and the terminal 53 is crimped to the core wire portion 52 on the other end side. The two harnesses 51 are sequentially manufactured.

Each unit will be described in detail below.

FIG. 2 is a side view of the length measuring unit 100, and FIG.
2 is a sectional view taken along the line III-III in FIG. 2, and FIG. 4 is IV-IV in FIG.
It is a line cross-section arrow line view. As shown in FIGS. 1 to 4, the length measuring unit 100 has a main body frame 101 and a feeding unit 102, and feeds it to a rotary shaft 106 rotatably attached to the front portion of the main body frame 101. The depression frame 103 of the feeding unit 102 is rotatably attached. Then, the rod 1 of the cylinder 108 provided between the main body frame 101 and the depression frame 103.
When 09 is driven backward, the feeding unit 102 is depressed downward about the rotary shaft 106 as a fulcrum, and when the rod 109 is driven forward, the feeding unit 102 is brought into the state shown in FIG. 2 (hereinafter referred to as “horizontal posture”). Retained.

Electric wire feeding lines Xa, Xb of the depression frame 103
On the other hand, in the upper position, the rotary shaft 1 is parallel to the rotary shaft 106.
05 is rotatably attached. And both rotary shafts 1
The base end sides of a pair of left and right open / close plates 115, 116 are rotatably attached to substantially central portions of 05, 106 so that the open / close plates 115, 116 can rotate around the respective rotary shafts 105, 106. Composed.
Roller shafts 117 and 118 are rotatably mounted between the tips of the open / close plates 115 and 116, and feed rollers 119 and 120 are fixed to the roller shafts 117 and 118, respectively.

Further, as shown in FIGS. 3 and 4, gears 127 and 128 meshing with each other are attached to the base end sides of both the opening and closing plates 115 and 116. This allows
For example, when the upper opening / closing plate 115 is swung, the swinging force is transmitted to the lower opening / closing plate 116 via the gears 127 and 128, and the lower opening / closing plate 116 is moved.
Swings in a direction opposite to the upper opening / closing plate 115.

A motor 111 (FIG. 3) is attached to the body frame 101. The rotation of the rotary drive shaft of the motor 111 is transmitted to the lower rotary shaft 106 via the belt 112 and the pulley 110, and the gear 11
It is configured to be transmitted to the upper rotary shaft 105 via 3, 114. Furthermore, both rotary shafts 105, 106
Rotation of the pulleys 123, 124, belts 125, 12
6, pulleys 121, 122 and roller shafts 117, 11
8 is transmitted to both feeding rollers 119 and 120 respectively.

As shown in FIG. 2, the upper and lower opening / closing plates 11
A tension spring 129 is stretched between the five and 116. Then, in a state in which the electric wires inserted into the guide pipes 130, 130 are arranged on the electric wire feeding lines Xa, Xb, the feeding rollers 119, 12 are caused by the tension springs 129.
The rollers 119 and 120 are urged in the direction in which 0 approaches.
Holds the electric wire. In this state, the motor 1
When the feeding rollers 119 and 120 are rotated by the rotational drive of 11, the electric wires are fed along the feeding lines Xa and Xb.

A front clamp (hereinafter referred to as "F clamp") 150 is attached to the front portion of the depression frame 103. This F clamp 150 has electric wire feeding lines Xa, X
The wire insertion holes 151, 151 (FIG. 3) are formed corresponding to b, and the wire insertion holes 151, 1
It is configured so that the electric wires respectively inserted into 51 can be grasped and released.

The length measuring unit 100 configured as described above
However, as shown in FIG. 1, it is movably supported in the horizontal plane by the moving means 500.

More specifically, the moving means 500 is provided with a main body 501 along the left and right directions R and S, and on the main body 501, it is movable left and right along the left and right directions R and S. The moving body 502 is supported. Then, the left and right moving body 502 is moved to the main body 50 by driving the motor 502M.
1 is configured to move in the left-right direction.

As shown in FIG. 2, a guide rail 503 is mounted on the left and right moving body 502 along the longitudinal directions P and Q, and a slider 504 is slidably mounted on the guide rail 503. This slider 5
The length measuring unit 100 is attached to 04. The length measuring unit 100 is configured to move in the front-back direction with respect to the left-right moving body 502 by driving the motor 100M (see FIG. 1). Thus, the measuring unit 100
Is movable in a horizontal plane.

FIG. 5 is a perspective view of the main part of the cutter unit 200 and its peripheral part. As shown in FIGS. 1 and 5, the cutter unit 200 includes an electric wire feeding line X.
A pair of cutters 201, 201 are provided on both upper and lower sides of a and Xb. The pair of cutters 201, 201 is supported by a cutter body (not shown) so as to be movable in the vertical direction. Further, the cutters 201, 201 are configured to open and close by driving a motor 201M (see FIG. 1).

The rear clamp (hereinafter referred to as "R clamp") 250 is provided with substantially L-shaped fixing claws 251 and 251 corresponding to the two electric wires 50 arranged on the electric wire feeding lines Xa and Xb, respectively. Be done. Furthermore, the fixed claw 251,
On the horizontal part of 251, the movable claws 252 and 252 are arranged in the left-right direction R orthogonal to the electric wire feeding lines Xa and Xb, respectively.
It is attached to the S so that it can move back and forth. Then, the fixed claws 251,
The movable claws 252, 252 are driven forward and backward by driving the cylinders 253, 253 mounted on the 251, and the electric wires 50, 50 arranged between the vertical part of the fixed claw 251 and the vertical part of the movable claw 252 are moved. It is configured to be able to hold and release each.

As shown in FIG. 1, this R clamp 250
Are configured to be movable in the horizontal plane by the moving means 550.

That is, the left and right moving bodies 552 are movably supported by the main body 551 of the moving means 550 along the left and right directions R and S, and the left and right moving bodies 552 move in the left and right directions R and S by driving the motor 552M. To be configured. Then, the R clamp 250 is mounted on the left and right moving body 552.
Is movably supported along the front-rear directions P and Q, and the R clamp 250 is configured to move along the front-rear directions P and Q with respect to the left-right moving body 552 by driving the motor 250M.

FIG. 6 shows a perspective view of a main part of the twisting unit 300. As shown in the figure, the twisting unit 300 is provided with two files 301 and 301 which are parallel to each other and whose longitudinal directions are arranged along the left and right directions R and S. The two files 301, 301 are configured to be movable in the up-down direction while being kept parallel to each other by a driving means (not shown), and to be movable in the longitudinal direction (left-right direction R, S).

As shown in FIG. 1, the flux unit 3
50 and the solder unit 400 respectively include a flux tank 351 and a solder tank 4 whose upper portions are open to the outside.
04 are arranged.

On the other hand, in this harness manufacturing apparatus, the above-mentioned drive units are connected to a control unit (not shown), and the drive of each drive unit is controlled based on an output signal from the control unit, which will be described below. Such an operation is performed.

<B. Operation and Effect of Example Apparatus> Next, the operation of the harness manufacturing apparatus will be described.

Before starting the operation, the length measuring unit 10
The feeding unit 102 of 0 is held in a horizontal posture, and the electric wire 50 is sandwiched by a pair of feeding rollers 119 and 120. The F clamp 150 and the R clamp 250 are
Each of the electric wires 50 is in a released state.

From this state, when an operation start command is given to the control section, the feeding rollers 119 and 120 rotate by a predetermined amount, and the electric wire 50 moves along the electric wire feeding lines Xa and Xb by a predetermined amount in the arrow P direction. Only the length of the harness 51 is fed.

Next, the F and R clamps 150 and 250
Thus, the electric wires 50 are respectively gripped. Next, Fig. 7
As shown in FIG. 3, an electric wire 50 is sandwiched and cut by a pair of cutters 201, 201, and an electric wire (hereinafter referred to as “residual electric wire”) 50 gripped by an F clamp 150,
It is divided into an electric wire (hereinafter, referred to as “cut electric wire”) 50 gripped by the R clamp 250.

Next, as shown in FIG.
The grip of the residual electric wire 50 by 0 is released, the pair of feed rollers 119 and 120 rotate a small amount, and the residual electric wire 50 advances in the direction of the arrow P by a small amount (the amount corresponding to the stripping amount of the residual electric wire 50). ..

Next, the residual electric wire 5 is fixed by the F clamp 150.
0 is gripped, and the covering portion of the residual electric wire 50 on the downstream side in the electric wire feeding direction P is cut by the pair of cutters 201, 201. Then, in the cut state, the length measuring unit 100 is moved by the moving means 5 as shown in FIGS.
By driving 00, it is retracted in the direction of arrow Q by an amount smaller than the amount of coating stripping. As a result, the covering portion 61 on the downstream side of the position where the residual electric wire 50 is cut by the cutter 201 is separated from the remaining covering portion 62 without falling off from the core wire portion 52 (semi-strip processing).

Thereafter, as shown in FIG. 11, the pair of cutters 201, 201 is opened, and the length measuring unit 100 drives the moving means 500 so that the end of the core wire portion 52 is positioned at the cutter 201 as shown in FIG. Back to
Further, it is retracted by a certain amount in the direction of arrow Q. Next, the pair of cutters 201, 201 is closed, the covering portion 61 projecting in the direction of the arrow P from the end of the core wire portion 52 is cut, and then the pair of cutters 201, 201 is opened, as shown in FIG.
As shown in FIG. 5, a state in which the short-length covering portion 61 is left at the end of the core wire portion 52 is obtained. Here, the extra covering portion 61 protruding from the end of the core wire portion 52 is cut, and the end length of the electric wire 50 conveyed in the next step can be further shortened and the conveying space can be further reduced. Further, since the length of the end portion of the electric wire 50 can be made shorter, the retracting stroke by the moving means 500, that is, the stroke in the arrow Q direction can be made smaller.

After that, as shown in FIG. 15, the length measuring unit 100 is retracted by a predetermined amount, further moved in the direction of arrow R, and the downstream end of the residual electric wire 50 is transferred to the front of the twisting unit 300. , And as shown in FIG.
In the forward direction, the downstream end of the residual electric wire 50 is inserted between the pair of files 301, 301.

Next, the coating portion 61 on the end portion side of the residual electric wire 50, which has been subjected to the semi-strip processing, is provided with a pair of files 301,
It is sandwiched by 301 (see FIG. 6), and the length measuring unit 100 is driven backward as shown in FIG. 17 while moving the upper side file 301 and the lower side file 301 in the right direction S and the left direction R, respectively. As a result, the residual electric wire 50
The covering portion 61 on the end side is subjected to a rolling operation, the core wire portion 52 is twisted and twisted as the covering portion 61 rolls, and as shown in FIG. 18, the covering portion on the end side ( The strip waste) 61 is extracted from the core wire portion 52.

Subsequently, the length measuring unit 100 moves to the left, that is, in the direction of the arrow R, and the downstream end of the residual electric wire 50 is placed above the flux tank 351 of the flux unit 350 as shown in FIG. As shown in FIG. 20, the feeding unit 102 of the length measuring unit 100 is connected to the cylinder 10
Proceed with the backward drive of 8.

Next, as shown in FIG. 21, the F clamp 1
After the residual electric wire 50 is released from the grip of the residual electric wire 50, the pair of feed rollers 119 and 120 rotate by a predetermined amount, and the core wire 52
The tip of the is immersed in the flux solution 353. Subsequently, as shown in FIG. 22, the feed rollers 119 and 120 rotate in the reverse direction, the residual electric wire 50 retracts, and the core wire 52 is pulled up from the flux solution 353.

Continuing, as shown in FIG.
2 is returned to the horizontal posture by the advancing drive of the cylinder 108, the length measuring unit 100 moves to the left, that is, the arrow R direction, and the downstream end of the residual electric wire 50 is soldered to the solder unit 400 as shown in FIG. Transferred to above the tank 404.

Next, as shown in FIG. 25, the length measuring unit 1
26 and 27 after the feeding unit 102 of 00 falls down.
As shown in FIG. 5, the residual electric wire 50 advances and retreats by the rotational driving of the feed rollers 119 and 120, and the solder liquid 4 is applied to the core wire portion 52.
03a is attached. Thereafter, as shown in FIG. 28, the feeding unit 102 of the length measuring unit 100 is returned to the horizontal posture, and then the length measuring unit 100 returns to the original position shown in FIG.

On the other hand, while the downstream end of the residual electric wire 50 is being twisted, applied with flux, and attached with solder, the R clamp 250 is moved by the moving means 550 in the backward direction, that is, in the direction of the arrow Q. (The amount corresponding to the amount of coating stripping of the upstream end of the cut wire with respect to the wire feeding direction P). As a result, the upstream end of the cut electric wire gripped by the R clamp 250 has a pair of cutters 201, 20.
It is sent in between 1.

Next, the covering portion at the upstream end of the cut wire is cut by the pair of cutters 201, 201, and the cut amount of the R clamp 250 on the upstream side of the cut wire is cut in the cut state. It moves in the forward direction, that is, in the direction of the arrow P by a longer amount than that, and the coating portion on the upstream end of the cut wire is peeled off.

Next, the R clamp 250 moves to the right, that is, in the direction of arrow S, and the terminal crimping unit 450
Terminal 53 (see FIG. 29) on the upstream stripping portion of the cut wire
Is crimped.

Then, the cut wire is discharged to a predetermined wire discharge portion by discharge means (not shown), and the R clamp 250 returns to the original position shown in FIG. In this way, the terminal 53 is crimped to one end of the wire discharge portion, and the coating portion of the other end is peeled off and twisted.
The harness 51 to which 03 is attached (see FIG. 29) is ejected.

By repeating such an operation continuously, two harnesses 51 are sequentially manufactured.

In the above embodiment, the harness manufacturing apparatus for manufacturing the harness 51 by performing various processes subsequent to the semi-strip process of the electric wire 50 is shown.
The electric wire 50 may be a semi-strip processing device alone.

[0047]

As described above, according to the electric wire semi-strip method of the present invention, the electric wire is retracted while being cut into the electric wire covering portion by the cutter, and the electric wire end side covering portion is covered with the remaining covering portion. After opening the wire, the cutter is opened, the clamp is moved further apart, and the wire is retracted further by a predetermined amount, and then the cutter is closed to cover the wire end side protruding from the core wire end of the wire. Since the portion is cut, the amount of protrusion of the covering portion protruding from the end portion of the core wire portion after the semi-strip processing can be reduced, the transport space can be reduced, and the entire apparatus can be made compact. Further, since the protruding amount of the covering portion protruding from the end portion of the core wire portion can be reduced, space saving of the storage place can be achieved and bending of the electric wire during transportation can be effectively prevented.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a harness manufacturing apparatus to which a semi-strip method for electric wires according to an embodiment of the present invention can be applied.

FIG. 2 is a side view showing a length measuring unit of the harness manufacturing apparatus.

3 is a sectional view taken along the line III-III of FIG.

4 is a sectional view taken along line VI-VI of FIG.

FIG. 5 is a perspective view of a main part of the harness manufacturing apparatus.

FIG. 6 is a perspective view of a main part showing a file unit of the harness manufacturing apparatus.

FIG. 7 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 8 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 9 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

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

FIG. 11 is an enlarged side view for explaining the operation of the harness manufacturing apparatus.

FIG. 12 is an enlarged side view for explaining the operation of the harness manufacturing apparatus.

FIG. 13 is an enlarged side view for explaining the operation of the harness manufacturing apparatus.

FIG. 14 is an enlarged side view for explaining the operation of the harness manufacturing apparatus.

FIG. 15 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 16 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 17 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 18 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 19 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 20 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 21 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 22 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 23 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 24 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 25 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 26 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 27 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 28 is a schematic cross-sectional view for explaining the operation of the harness manufacturing apparatus.

FIG. 29 is a perspective view showing a harness manufactured by the harness manufacturing apparatus.

FIG. 30 is a perspective view of relevant parts showing a conventional electric wire semi-strip device.

FIG. 31 is a side view of essential parts showing the operation of the conventional semi-strip device.

FIG. 32 is a side view of the essential parts showing the operation of the conventional semi-strip device.

FIG. 33 is a side view of a main portion showing the operation of the conventional semi-strip device.

FIG. 34 is a perspective view of a main part of a conventional core wire twisting device.

[Explanation of symbols]

 50 Electric Wire 61 End Side Covering Section 62 Remaining Covering Section 150 F Clamp 201 Cutter

Claims (1)

[Claims] 1. The electric wire is retracted by a predetermined amount by moving the clamp away from the pair of cutters in a state where the covering portion of the electric wire end portion grasped by the clamp is cut by the pair of cutters, and the electric wire is retracted by a predetermined amount. In the semi-strip method of the electric wire, which is configured to open the pair of cutters after separating the covering portion on the electric wire end portion side from the cutting position of the pair of cutters from the remaining covering portion, and the covering on the electric wire end portion side. After separating the part from the remaining covering part, the pair of cutters are opened, and then the clamp is further moved to the above distance to further retract the electric wire by a predetermined amount, and then the pair of cutters is closed to close the core wire of the electric wire. A method of semi-stripping an electric wire, characterized in that the covering portion on the side of the electric wire end projecting from the end of the electric wire is cut.