JP2979408B2 - Semi-strip method of electric wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art When manufacturing an electric wire in which a core portion at an end is twisted, first, as shown in FIGS.
The electric wire 10 is gripped by a movable clamp 1 on a horizontal plane including its longitudinal direction, and the end of the electric wire 10 is fed between the pair of cutters 2. Subsequently, as shown in FIG. 32, the wire 10 is cut back in the direction indicated by arrow Q by cutting the cover 11 at the end of the wire 10 with the pair of cutters 2 and moving the clamp 1 backward in this state. As a result, FIG.
As shown in FIG. 3, the covering portion 12 on the end side of the electric wire with respect to the cutting position of the pair of cutters 2 and 2 is separated from the remaining covering portion 11 so as not to fall off the core wire portion 13 (semi-strip process).

After the pair of cutters 2 and 2 are opened, the electric wire 10 is conveyed and moved, for example, in the horizontal direction by the clamp 1, and the ends of the semi-stripped electric wire 10 are twisted by a core twisting device as shown in FIG. 3 is arranged between a pair of upper and lower files 4 and 4 arranged in parallel. Subsequently, as shown by the imaginary line in the figure, the covering portion 12 on the end side of the electric wire 10 is sandwiched between the pair of files 4 and 4 from above and below, and in that state, the one file 4 is moved leftward along its longitudinal direction. R and the file 4 on the other side is moved rightward S. As a result, the covering portion 12 on the end portion is rolled,
The core wire portion 13 is twisted with the rolling of the coating portion 12 and twisted.

[0004]

However, according to the above-described conventional semi-strip method, FIGS.
The wire 10 is retracted in the direction of the arrow Q in a state where the wire 10 is cut by the cutter 2 into the sheath 11 of the electric wire 10 as shown in FIG. Since the semi-strip process is completed by separating from the wire 11, the covering 12 on the wire end side protrudes greatly in the longitudinal direction of the wire 10 from the end of the core wire 13.

Therefore, after the semi-strip processing, the electric wire 10
When the wire is transported to the core wire twisting device 3 side, it is necessary to secure a wide transport space for the wire 10 so that the covering portion 12 protruding greatly toward the end of the wire 10 does not interfere with other members. Had to be enlarged. Further, when the semi-strip processing step and the core wire twisting step are not performed consecutively, it is necessary to secure a wide space for storing the electric wire 10 after the semi-strip processing. In addition, there is a great possibility that the covered portion 12 formed in a protruding shape during the transport of the electric wire after the semi-strip processing comes into contact with another one and the electric wire is bent.

In view of the above problems, an object of the present invention is to provide an electric wire semi-strip method capable of reducing the size of the entire apparatus, saving the space for storing electric wires, and preventing bending of the electric wires during transportation. I do.

[0007]

The technical means for achieving the above object is that the clamp is attached to the pair of cutters in a state where the covering portion of the end of the wire gripped by the clamp is cut by the pair of cutters. By moving the electric wire backward by a predetermined distance by separating and moving the electric wire, and separating the covering portion on the wire end side from the cutting position of the pair of cutters from the remaining covering portion, the pair of cutters is opened. In the electric wire semi-strip method, after the covering portion on the end portion of the electric wire is cut off from the remaining covering portion, the pair of cutters is opened, and then the clamp is further moved away by a predetermined amount to further reduce the electric wire by a predetermined amount. Retreat,
Thereafter, the pair of cutters are closed to cut the covering portion on the side of the end of the electric wire protruding from the end of the core portion of the electric wire.

[0008]

According to the present invention, in a state where the wire is cut into the covering portion with a cutter, the wire is retracted, the covering portion on the end side is separated from the remaining covering portion, and then the wire is further cut from the core end portion. Since the excess coating that interferes with the end of the protruding wire is cut off, the amount of coating that protrudes from the end of the core after semi-strip processing can be reduced, and the wire can be transported to the next process. In this case, it is possible to reduce the transfer space when performing the operation and to reduce the size of the entire apparatus. Also, when storing the electric wire after the semi-strip processing, the space for the storage place can be saved. Furthermore, the possibility of contact with other objects during transportation can be reduced, and bending of the electric wire can be effectively prevented.

[0009]

Embodiment <A. FIG. 1 is a schematic plan view showing a harness manufacturing apparatus to which a semi-strip method of an electric wire according to an embodiment of the present invention can be applied.

As shown in FIG. 1, the harness manufacturing apparatus includes a length measuring unit 100 and a cutter unit 200.
, A rear clamp 250, a twist unit 300, a flux unit 350, a solder unit 400,
It has a terminal crimping unit 450 and moving means 500 and 550. In this apparatus, various processes as described later are applied to the two long wires, and
As shown in FIG. 9, the covering portions at both ends are peeled off, and the core wire portion 52 at one end is twisted and solder 403 is attached, and the terminal 53 is crimped to the core wire portion 52 at the other end. The two harnesses 51 are sequentially manufactured.

Hereinafter, each unit will be described in detail.

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.
It is a line sectional arrow view. As shown in FIGS. 1 to 4, the length measuring unit 100 has a main body frame 101 and a feeding section 102, and feeds the data to a rotating shaft 106 rotatably attached to a front portion of the main body frame 101. The lowering frame 103 of the feeding unit 102 is rotatably mounted. The rod 1 of the cylinder 108 provided between the main body frame 101 and the lowering frame 103
When 09 moves backward, the feeding unit 102 descends with the rotation shaft 106 as a fulcrum, and when the rod 109 advances, the feeding unit 102 is brought into the state shown in FIG. 2 (hereinafter, referred to as “horizontal posture”). Will be retained.

The electric wire supply lines Xa, Xb of the lowering frame 103
In the upper position, the rotating shaft 1 is parallel to the rotating shaft 106.
05 is rotatably mounted. And both rotating shafts 1
The base ends of a pair of left and right open / close plates 115 and 116 are rotatably attached to the approximate center portions of the open / close plates 05 and 106 so that the open / close plates 115 and 116 can rotate around the rotation shafts 105 and 106, respectively. Be composed.
Roller shafts 117 and 118 are rotatably mounted between the leading ends of the open / close plates 115 and 116, respectively, and feed rollers 119 and 120 are fixed to the roller shafts 117 and 118, respectively.

As shown in FIGS. 3 and 4, gears 127 and 128 that mesh with each other are attached to the base ends of the open / close plates 115 and 116. This allows
For example, when the upper opening / closing plate 115 is swung, the swinging power is transmitted to the lower opening / closing plate 116 via the gears 127 and 128, and the lower opening / closing plate 116 is rotated.
Swings in a direction opposite to the upper opening / closing plate 115.

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

As shown in FIG.
A tension spring 129 is stretched between 5,116. When the electric wires inserted into the guide pipes 130 and 130 are arranged on the electric wire feed lines Xa and Xb, the feed rollers 119 and 12 are extended by the tension spring 129.
0 is urged in the direction to approach, and rollers 119 and 120
The electric wire is clamped. Further, in this state, the motor 1
When the feed rollers 119 and 120 are rotated by the rotation drive of 11, the electric wires are fed along the feed lines Xa and Xb.

A front clamp (hereinafter, referred to as an “F clamp”) 150 is attached to a front portion of the lowering frame 103. The F clamp 150 has electric wire feeding lines Xa, X
b, the electric wire insertion holes 151, 151 (FIG. 3) are formed, and the electric wire insertion holes 151, 151 (FIG. 3) are formed.
It is configured such that the electric wires inserted into the respective 51 can be gripped and released.

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

More specifically, the main body 501 is disposed on the moving means 500 along the right and left directions R and S, and is movably mounted on the main body 501 along the right and left directions R and S. The moving body 502 is supported. Then, the left and right moving body 502 is driven by the motor
1 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 front and rear 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 the section 04. Then, the length measurement unit 100 is configured to move in the front-rear direction with respect to the left and right moving body 502 by driving the motor 100M (see FIG. 1). Thus, the length measuring unit 100
Are configured to be movable in a horizontal plane.

FIG. 5 is a perspective view of a main part of the cutter unit 200 and a peripheral part thereof. As shown in FIGS. 1 and 5, the cutter unit 200 includes an electric wire feed line X
A pair of cutters 201 are provided on both upper and lower sides of a and Xb. The pair of cutters 201, 201 are supported by a cutter body (not shown) so as to be movable vertically. 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 respectively corresponding to the two electric wires 50 arranged on the electric wire feeding lines Xa and Xb. Can be Further, fixed claws 251,
In the horizontal part of the 251, movable claws 252 and 252 are respectively provided in the right and left directions R and R orthogonal to the electric wire feeding lines Xa and Xb.
It is attached to S so that it can move forward and backward. Then, the fixed claws 251,
The movable claws 252 and 252 are driven forward and backward by the driving of the cylinders 253 and 253 mounted on the 251, and the electric wires 50 and 50 arranged between the vertical portion of the fixed claw 251 and the vertical portion of the movable claw 252 are moved. Each is configured so that it can be gripped and released.

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

That is, the left and right moving body 552 is supported by the main body 551 of the moving means 550 so as to be movable along the left and right directions R and S, and the left and right moving body 552 is moved in the left and right directions R and S by driving the motor 552M. It is configured to Then, the R clamp 250 is placed on the left and right moving body 552.
Are supported movably along the front-rear directions P, Q, and the R clamp 250 is configured to move along the front-rear directions P, Q with respect to the left and right moving body 552 by driving the motor 250M.

FIG. 6 is 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, 301 which are parallel to each other and whose longitudinal direction is arranged along the left and right directions R, S. The two files 301, 301 are configured to be movable in the vertical direction while being kept parallel to each other by driving means (not shown), and to be able to move in the longitudinal direction (right and left directions R, S).

As shown in FIG. 1, the flux unit 3
The flux tank 351 and the solder tank 4 whose upper parts are open to the outside are provided in the solder tank 50 and the solder unit 400, respectively.
04 is arranged.

On the other hand, in the harness manufacturing apparatus, each of the driving units is connected to a control unit (not shown), and the driving of each of the driving units is controlled based on an output signal from the control unit. Such an operation is performed.

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

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

In this state, when an operation start command is given to the control unit, the feed rollers 119 and 120 rotate by a predetermined amount, and the electric wire 50 moves along the electric wire feed lines Xa and Xb in the arrow P direction by a predetermined amount. (The length of the harness 51).

Next, F and R clamps 150 and 250
The electric wires 50 are respectively gripped. Next, FIG.
As shown in FIG. 5, the electric wire 50 is sandwiched and cut by the pair of cutters 201, 201, and is held by the F clamp 150 (hereinafter referred to as “residual electric wire”) 50;
The wire is divided into an electric wire (hereinafter referred to as a “cut electric wire”) 50 gripped by the R clamp 250.

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

Next, the residual electric wire 5 is
0 is gripped, and the coating 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, as shown in FIG. 9 and FIG.
By the drive of 00, it is retracted in the direction of arrow Q by an amount smaller than the above-mentioned coating stripping amount. As a result, the covering portion 61 on the downstream side of the cutting position of the residual electric wire 50 by the cutter 201 is cut off from the remaining covering portion 62 without falling off from the core wire portion 52 (semi-strip process).

Thereafter, as shown in FIG. 11, the pair of cutters 201, 201 are opened, and the length measuring unit 100 is driven by the moving means 500 so that the end of the core portion 52 is positioned at the position of the cutter 201 as shown in FIG. To retreat until
It is further retracted in the direction of arrow Q by a certain amount. Next, the pair of cutters 201, 201 are closed, and the covering portion 61 protruding in the direction of the arrow P from the end of the core wire portion 52 is cut. Thereafter, the pair of cutters 201, 201 is opened, and FIG.
As a result, a state in which the short covering portion 61 is left at the end of the core wire portion 52 is obtained. Here, an extra covering portion 61 protruding from the end of the core wire portion 52 is cut, so that the length of the end portion of the electric wire 50 conveyed to the next step can be shortened, and the conveyance space can be reduced. In addition, since the length of the end portion of the electric wire 50 can be made shorter, the retraction stroke by the moving means 500, that is, the stroke in the arrow Q direction can be made smaller.

Thereafter, as shown in FIG. 15, after 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 an arrow P as shown in FIG.
The downstream end of the residual electric wire 50 is inserted between the pair of files 301, 301.

Subsequently, the semi-strip-processed covering portion 61 of the residual electric wire 50 is provided with a pair of files 301,
The length measuring unit 100 is retracted as shown in FIG. 17 while being moved between the upper file 301 and the lower file 301 in the right direction S and the left direction R, respectively. Thereby, the residual electric wire 50
The covering portion 61 on the end side is rolled, and the core wire portion 52 is twisted and twisted with the rolling of the covering portion 61, and as shown in FIG. 18, the covering portion on the end side ( The strip waste (61) is pulled out from the core portion 52.

Subsequently, the length measuring unit 100 moves in the left direction, that is, in the direction of arrow R, and the downstream end of the residual electric wire 50 is located 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
8. The vehicle is lowered by the backward drive.

Next, as shown in FIG.
50, the pair of feed rollers 119, 120 rotate by a predetermined amount, and the core wire 52 is released.
Is immersed in the flux solution 353. Subsequently, as shown in FIG. 22, the feed rollers 119 and 120 are rotated in the reverse direction, the residual electric wire 50 is retracted, and the core wire 52 is pulled up from the flux solution 353.

Subsequently, as shown in FIG.
2 is returned to the horizontal posture by the advance driving of the cylinder 108, the length measuring unit 100 moves in the left direction, that is, the direction of the arrow R, and the downstream end of the residual electric wire 50 is soldered to the solder unit 400 as shown in FIG. It is transferred to the upper part of the tank 404.

Next, as shown in FIG.
After the feeding unit 102 of FIG.
As shown in the figure, the residual electric wire 50 advances and retreats by the rotational driving of the feed rollers 119 and 120, and the solder liquid 4
03a is deposited. 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 portion of the residual electric wire 50 is being subjected to the twisting process, the flux application process, and the solder attachment process, the R clamp 250 is moved by the moving means 550 in the rearward direction, that is, in the direction of arrow Q, (The amount corresponding to the stripping amount of the coating at the upstream end in the wire feeding direction P of the cut wire). Thereby, the upstream end of the cut electric wire gripped by the R clamp 250 is connected to the pair of cutters 201 and 20.
It is sent between one.

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

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

Thereafter, the cut wire is discharged to a predetermined wire discharge portion by a 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 discharging portion, and the covering portion at the other end is peeled off and twisted.
The harness 51 (see FIG. 29) to which 03 has been attached is discharged.

Such an operation is continuously repeated, and two harnesses 51 are sequentially manufactured.

In the above embodiment, the harness manufacturing apparatus for manufacturing the harness 51 by performing various processes after the semi-strip process of the electric wire 50 is described.
A single semi-strip processing device for the electric wire 50 may be used. Also, the end of the core wire after semi-strip processing
It does not have the function to cut the covering part on the end of the protruding wire.
In conventional equipment, for example, semi-strip processing
The tip of the coating part that has been separated further interferes with other units, etc.
For example, to make the strip length up to 25 mm
When restricted, semi-strips as in the present invention
After the treatment, the sheath on the wire end protruding from the core wire end
By adding a function to cut the cover, other units can be
Can be effectively prevented, and therefore the strip length
Can be up to, for example, about 35 mm.
The strip length of the coating section without increasing the size of the
Longer, making it possible to improve the functions of
It is possible to respond to a wide range of customer needs.

[0047]

As described above, according to the semi-strip method of an electric wire according to the present invention, the electric wire is retracted in a state where the electric wire is cut with a cutter, and the coated portion on the electric wire end side is covered with the remaining electric wire. After being cut off from the part, the cutter is opened, then the clamp is further moved away by a predetermined distance to further retreat the wire, and then the cutter is closed to cover the wire end side projecting from the core end of the wire. Since the portion is cut, the amount of protrusion of the covering portion projecting from the end of the core wire after the semi-strip process can be reduced, and the transport space can be reduced here, and the entire apparatus can be made compact. In addition, since the amount of protrusion of the covering portion protruding from the end of the core wire portion can be reduced , the space after the semi-strip processing of the electric wire can be saved , and the semi-strip can be saved.
When transporting the wire after tapping by hand,
The possibility of contact can be reduced, the bend of the wire can be effectively prevented , and furthermore,
May come off due to contact with other coating parts
Can be effectively prevented. In addition, the covering part protruding from the end of the core part
Can reduce the amount of protrusion and reduce the transport space.
Therefore, the size of the covering section can be reduced without increasing the size of the entire device.
The trip length can be made longer and the device itself
Advantages of improving the functionality of the product and responding to a wide range of customer needs
There is. In addition, the end of the core part that has been subjected to semi-strip processing
Equipped with a twisting unit that performs twisting using the covering part of
In the case of a device that has been cut, the cut-off portion is shortened.
Therefore, the depth of the twisting unit can be made small,
Unit can be made more compact,
There is also an advantage that the size can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a harness manufacturing apparatus to which an electric wire semi-strip method 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 device.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a sectional view taken along line VI-VI of FIG. 2;

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 device.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

FIG. 33 is a side view showing the operation of the conventional semi-strip apparatus.

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

[Explanation of symbols]

 Reference Signs List 50 wire 61 end part covering part 62 remaining covering part 150 F clamp 201 cutter

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02G 1/12 H01R 43/05

Claims (1)

(57) [Claims] In a state where a covering portion of an end portion of an electric wire gripped by a clamp is cut by a pair of cutters, the clamp is moved away from the pair of cutters so as to retreat the electric wire by a predetermined amount. In a semi-strip method of an electric wire, in which after the coating portion on the wire end side than the cutting position of the pair of cutters is separated from the remaining coating portion, the pair of cutters is opened, the coating on the electric wire end portion is performed. After the part is cut off from the remaining covering part, the pair of cutters is opened, and then the clamp is further moved away by a predetermined distance to further retreat the electric wire, and then the pair of cutters is closed and the core wire of the electric wire is closed. A semi-strip method for an electric wire, characterized in that a covering portion protruding from an end portion of the electric wire is cut off on a side of the electric wire end.