JP2002305066A - Welding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a welding tool which eliminates poor welding of welded material by making welded material pile up mutually correctly, and raises quality and reliability of a jointed part. SOLUTION: It is constituted with a 1st stopper 16, which positions the welding part by stopping tips of core wires 14a and 15a of one side electric wires 14 and 15, a 1st stopper driving mechanism 18, which makes this move forward or backward between a position A, where the above tips of the wires contact, and a position B, where retreated from the position A, a 2nd stopper 22, which is prepared with having an interval of a superposition length of the above core wires to an opposite direction of an insertion direction of the above electric wires to the 1st stopper, and positions the welding by stopping the tip of the core wire 20a of the other side electric wire 20, a 2nd stopper driving mechanism 24, which makes this move forward or backward between a position C, where the tip of the core wire 20a of the other side contact, and a positions D where retreated from the position C, and a clamp part 26, which is further prepared to an opposite direction of an insertion direction of electric wires 14 and 15 to the 2nd stopper 22, and holds the electric wires 14 and 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding jig used for welding a material to be welded such as an automobile, a wire harness for equipment, an electric wire used for indoor wiring, a metal wire or the like.

[0002]

2. Description of the Related Art When joining (connecting) a plurality of materials to be welded, in order to save time and effort in connection and to improve the reliability of connection,
These welded materials are overlapped, and the overlapped portions are welded by ultrasonic welding, resistance welding, laser beam welding, or the like. Conventionally, when a material to be welded is, for example, an electric wire for a wire harness, the insulating coating at the end of one or more electric wires is stripped off to expose the core wire, and the other one or more electric wires are used. Strip the insulating coating at the end of the wire to expose the core wire, arrange so that the ends of both electric wires face each other, and, by visual inspection of an operator, set an appropriate overlapping position of the exposed core wire, When there are a plurality of wires, one or the other wire, or both wires, the tip positions of the wires are also aligned, and the overlapped portions are welded and joined by ultrasonic welding or the like. For example, the one shown in FIG. 13 overlaps the core wires 1a and 2a of one electric wire 1 and 2 and welds the overlapped portion.
FIG. 14 shows core wires 3a to 3 of two electric wires 3 to 6 respectively.
6a are overlapped, and the overlapped portion is welded.

[0003]

According to the conventional method,
In the example shown in FIG. 13, for example, the core wire 2 a of the electric wire 2 is not set at an appropriate overlapping position, and in the example shown in FIG. 14, the core wire 4 a of the electric wire 4 and the core wire 6 a of the electric wire 6 are formed. As described above, the positions of the leading ends become irregular, the overlapping length becomes short, and the overlapping state of the core wires becomes unstable. Therefore, when welding the overlapped portion of the core wires in such a state, welding failure occurs, the welding strength of the portion is reduced, and if an external force such as tension, bending, torsion, etc. repeatedly acts, the joint is damaged. For example, there is a problem that the quality and reliability of the joint are reduced.

[0004] On the other hand, if the overlapping length is too long, the tip of the core wire protrudes outside and is caught by another member, which may damage the member or cause injury to the operator. It is dangerous, and in order to prevent this, it is necessary to shape the outer peripheral surface of the joint, and there is a problem that the number of steps for this is increased.

[0005] Further, if the quality and reliability of the joint are reduced, the production yield of the electric wire is reduced, a strict inspection is required to check the quality of the joint, and it takes time to form the joint. In addition, the work efficiency is reduced, and therefore, it is not easy to mass-produce a high-quality electric wire, and there is a problem that the electric wire cost increases.

[0006] Such a problem is not limited to the case where the material to be welded is not only a wire for a wire harness but also another wire, a conductive metal wire or a metal wire not intended for conductivity. It was an applicable problem.

[0007] The present invention has been proposed in view of the above,
When the welded material is overlapped and the overlapped portion is welded, it is possible to accurately and promptly perform the positioning of the overlapped position of the material to be welded and the alignment of the tip end, and eliminate welding defects of the material to be welded. Another object of the present invention is to provide a welding jig which improves the quality and reliability of a joint portion and manufactures a material to be welded with high yield to reduce product cost.

[0008]

As a means for achieving the above object, a welding jig according to a first aspect of the present invention provides a welding jig for positioning the welding by contacting the tip of one of the materials to be welded. A first stopper to be performed, a first stopper driving mechanism for moving the first stopper between a stopper position where the tip of one of the workpieces abuts and a non-stopper position retracted from the stopper position, and a first stopper. The other welded member is provided so as to face the first stopper at a distance corresponding to the overlap length of the material to be welded in a direction opposite to the direction in which one of the material to be welded enters, and is overlapped with one of the material to be welded A second stopper for abutting the leading end of the material to perform welding positioning, and a second stopper for moving the second stopper between a stopper position where the leading end of the other material to be contacted and a non-stopper position retracted from the stopper position. 2 A stopper drive mechanism, with respect to the first and second stoppers, further one provided approach direction opposite to the direction side of the material to be welded, and a clamping portion for gripping one of the workpieces.

According to the above configuration, one of the materials to be welded is the first material.
The overlap position is set correctly by the stopper, and the overlap position of the other workpiece is set correctly by the second stopper. When there are a plurality of one to-be-welded materials or the other to-be-welded materials, or both of the to-be-welded materials, the tip positions of the plurality of to-be-welded materials are correctly aligned by the first stopper or the second stopper. .

Therefore, the overlap length of the first and second materials to be welded does not become too short or too long, and it is possible to correctly set the overlap length necessary for welding. Therefore, the overlapped portion of the materials to be welded does not cause poor welding, and the welding strength of the portion is improved. Therefore, even if an external force such as tension is applied, the joint is not likely to be damaged, and the joint is not damaged. Quality and reliability are improved.

Further, since the overlapping length does not become longer than necessary, the tip of the material to be welded does not protrude outside, the joint becomes compact, and there is a possibility that the member may be damaged by being caught by another member. Since this is eliminated, the storage and handling of the material to be welded are simplified. In addition, since it is not necessary to shape the outer peripheral surface of the joint, the formation of the joint is facilitated, and the number of operations can be reduced.

Further, since the quality and reliability of the joint are improved, the production yield of the material to be welded is improved, the quality check of the joint can be simplified, and the time required for forming the joint is shortened. Therefore, work efficiency is improved, and it becomes easy to mass produce good quality welded products at a low price.

Further, when the welding jig of the present invention is used, the joining state of the joining portion is stable and firm. Therefore, when the material to be welded is an electric wire or a conductive metal wire material, the contacting state is small. Resistance does not increase, and conduction failure due to vibration or the like does not occur, and a failure of an electric system such as a system, equipment, or device using the same can be prevented, and reliability and durability can be improved.

According to a second aspect of the present invention, there is provided the welding jig according to the first aspect, wherein the welding position of the intermediate peeling portion of the workpiece having the intermediate peeling portion is aligned. And gripping the workpiece in which the welding positions of the intermediate peeling portions are aligned with the member, and moving the welding workpiece to a position opposed to the overlap welding position of the terminal of the welding workpiece according to claim 1, thereby positioning the welding. And an intermediate peeling portion positioning means for performing.

According to the above configuration, when the overlapped portion of the end of the material to be welded and the intermediate peeled portion are joined by welding,
The intermediate stripped portion can be correctly opposed to the overlap welding position of the end of the material to be welded, and the joint between the overlapped portion and the intermediate stripped portion does not cause poor welding, and the welding strength of the joint is improved. Therefore, the quality and reliability of the joint can be improved.

[0016]

Next, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 (a) and 1 (b) show an outline of a basic configuration in a case where a welding jig 10 of the present invention is applied to, for example, joining of electric wires (welded material) of a wire harness for automobiles and equipment. The welding jig 10 is provided on a frame (base of a welding module) 12, and when one of, for example, two electric wires 14, 15 enters in the entering direction X, insulation at the ends of the electric wires 14, 15 is performed. The ends of the core wires 14a and 15a, which have been stripped and exposed, are brought into contact with each other to position the welding, that is, a first stopper 16 that performs overlapping positioning and tip alignment, and the first stopper 16 is connected to one of the electric wires 14, The stopper position A (see FIG. 1B) and the stopper position A at which the tips of the 15 core wires 14a and 15a abut.
And a first stopper drive mechanism 18 for moving back and forth between a non-stopper position B (see FIG. 1A) retracted from the front end.

Further, the wires 14, 15 are moved in a direction opposite to the approaching direction X of one of the wires 14, 15 with respect to the first stopper 16.
Is provided so as to face the first stopper 16 at an interval corresponding to the overlapping length of the core wires 14a and 15a. The ends of the core wires 20a which are superposed on the core wires 14a and 15a of the wires 14 and 15 and whose insulating coating is stripped off at the ends of the electric wires 20 are brought into contact with each other to perform the welding positioning, that is, to perform the overlay positioning. The second stopper 22 and the second stopper 22 are connected to the other electric wire 2.
1 at the stopper position C (FIG. 1) where the tip of the core wire 20a contacts.
(A) and a second stopper drive mechanism 24 that moves back and forth between a non-stopper position D (see FIG. 1 (b)) retracted from the stopper position C.

Further, the first and second stoppers 16 and 22 are further provided on the opposite side to the approaching direction X of the one of the wires 14 and 15, and in the present embodiment, the one of the wires 14 and 15 is provided.
After the ends of the core wires 14a, 15a abut against the first stopper 16 to determine the position of the welding, these wires 14,
15 is provided with a clamp portion 26 for gripping and fixing these electric wires so as not to cause a displacement.

Reference numeral 28 is provided between the first stopper 16 and the second stopper 22 of the welding jig 10 of the present embodiment, and the core wires 14a, 15a of the one electric wires 14, 15 and the other electric wire 20 are connected to each other. The welding device which welds and joins the superimposition part with the core wire 20a by ultrasonic welding, resistance welding, laser beam welding, etc. is shown.

As shown in FIGS. 2 and 5, the first stopper 16 is formed of an elongated plate-like piece, has a wire contact portion 16a protruding downward at the front end side, and extends along the longitudinal direction at the rear end side. It has an elongated hole 16b for adjusting the mounting position, and is disposed obliquely downward and inclined in a first stopper drive mechanism 18, which will be described later.

As shown in FIGS. 2 and 5, the first stopper drive mechanism 18 is a linear drive type actuator 30 which is installed on the frame 12 and is operated by air or hydraulic fluid pressure.
Attach an L-shaped slider 34 to the piston rod 32 of
The slider 34 is slidably engaged with a substantially U-shaped guide groove 36 formed on the side of the actuator 30, and the piston rod 32 of the actuator 30 is extended or contracted to move the slider 34 to the one side. Are configured to be able to advance and retreat obliquely up and down in a plane perpendicular to the approach direction X of the electric wires 14 and 15 (or the approach direction Y of the other electric wire 20) (see FIG. 1A). I have.

The first stopper 16 is provided on the slider 3
4 through the long hole 16b of the first stopper 16
It is attached by tightening with the position adjustment bolt 38 of the book. Therefore, the first stopper 16 is also provided with the slider 34.
34 and 34 in the same plane as in FIG. Since the first stopper 16 has the elongated hole 16b, the position adjusting bolt 38 is loosened to move the stopper 16 in the longitudinal direction. When the stopper 16 moves forward to the stopper position A, the wire contact portion 16a is Core wires 14a, 15 of electric wires 14, 15
By tightening the position adjusting bolt 38 at a position where the tip of the a just contacts, the first stopper 16 can be adjusted to the optimum position.

The linear drive actuator 30 in the first stopper drive mechanism 18 is driven to drive the piston rod 32
Is extended, the L-shaped slider 34 slides, and the first stopper 16 advances to the stopper position A where the ends of the core wires 14a, 15a of the electric wires 14, 15 abut, while the piston rod 32 is moved. By the contraction, the L-shaped slider 34 slides in the opposite direction, and the first stopper 16 moves from the stopper position A to the non-stopper position B.
Retreat until. In this way, the first stopper 16 is connected to the one of the electric wires 14 and 15 by the first stopper driving mechanism 18.
Position A where the tips of the core wires 14a, 15a of
And the non-stopper position B retracted from this position.

As shown in FIGS. 2 and 6, the second stopper 22 is, for example, a rectangular plate piece slightly longer in the vertical direction, and has an upper edge and a lower edge on one long piece (right side in FIG. 6). The edges are chamfered. The second stopper 22 is provided in a second stopper drive mechanism 24 described later.

The second stopper driving mechanism 24 is shown in FIGS.
As shown in FIG. 6, on the upper surface of the frame 12 at predetermined intervals along a plane perpendicular to the entry direction X of the electric wires 14 and 15 (or the entry direction Y of the other electric wire 20), two frames are formed. Connecting small link pieces 4 having the same shape and size
0 and 42 are opposed to each other, and one end side (lower side) is
The bearing bracket 4 attached to the upper surface of the frame 12
The connection shafts 46 and 48 supported by the shaft 4 rotatably support the connection shafts 46 and 48, respectively.

On the other hand, a movable arm 52 having an elongated slot 50 penetrating in the vertical direction along the longitudinal direction is formed.
Are arranged horizontally horizontally facing the upper surface of the frame 12, and the connecting small link pieces 40,
42 is inserted into the other end (upper side) of the movable arm 52.
The other end sides of the connecting small link pieces 40, 42 are rotatably moved by the connecting shafts 54, 56 so that the connecting shaft interval is the same as the connecting shaft interval on one end side of the connecting small link pieces 40, 42. The frame 12 (fixed type), the reciprocating movable arm 52 (movable type) and the connecting small link piece 40
42 (movable type) and form a parallelogram link.

Further, one end side (lower side) of the connecting small link piece 40 and the connecting shaft 46 (the output shaft of the rotary drive actuator 58) are integrally fixed by a key 60, and the rotary drive actuator 58 connects the connecting shaft. 46 is rotated. As the rotary drive type actuator 58, an electric motor with a reduction gear such as a geared motor, an air or hydraulic motor, or the like is used. The second stopper drive mechanism 24 is configured as described above.

The second stopper 22 is fastened and fixed to the distal end side (the right side in FIGS. 2 and 6) of the reciprocating movable arm 52 of the second stopper drive mechanism 24 by a lock bolt 62. With respect to the stopper 16, the electric wires 14, 1
The five core wires 14 a and 15 a are provided so as to face the first stopper 16 at an interval corresponding to the overlapping length.

Then, by driving the rotary drive type actuator 58 of the second stopper drive mechanism 24, the connecting shaft 46 is moved to the position shown in FIG.
When rotated 90 degrees clockwise in, the connecting small link piece 40 integral therewith tilts to the right to the solid line position,
Similarly, the connecting small link piece 42 forming the parallelogram link also tilts to the right at the same angle up to the solid line position.
At the same time, while the movable arm 52 is kept parallel to the upper surface of the frame 12, it moves from the two-dot chain line position P (low position) to the two-dot chain line position Q (high position) in FIG. The robot moves obliquely upward and forward, and moves down from the position Q to the solid line position R (the same height position as the two-dot chain line position P) in a diagonally downward and rightward direction to move forward. Therefore, the second stopper 22 also moves along a similar trajectory and moves forward (the stopper position C). If the rotation driving type actuator 58 of the second stopper driving mechanism 24 is rotated in the reverse direction and the connecting shaft 46 is rotated 90 degrees in the counterclockwise direction, the reciprocating movable arm 52 draws a trajectory in a direction opposite to the trajectory and moves the two points. The second stopper 22 moves back along the same trajectory and retreats by returning to the chain line position P (the non-stopper position D).

The second stopper driving mechanism 24 moves the core wires 14a, 15a of the one electric wires 14, 15 to the stopper position A.
Abut on the first stopper 16 located at
Is fixed by the clamp portion 26 and then driven to advance the second stopper 22 to the stopper position C via the movable arm 52. At this time, the second stopper 22 covers the upper portions of the electric wires 14 and 15 so as to straddle the upper portions of the electric wires 14 and 15 so as to contact and hold the upper portions of the electric wires.

At this time, since the second stopper driving mechanism 24 employs a parallelogram link mechanism, the second stopper 22 moves forward and downward from obliquely upward to obliquely downward. In this case, a component force acts on the second stopper 22 to press the electric wires in the vertical and horizontal directions. Even if the shapes and sizes of the one electric wires 14 and 15 are variously different, the electric force is applied between the two. No gap is formed and the wire is conveniently contacted. Therefore, the second stopper 22 can be correctly and easily arranged on the upper part of the electric wires without deforming or damaging the electric wires 14 and 15, and the other electric wire 2
0 core wire 20a and electric wires 14, 15 core wire 14a, 15a
It is easy to correctly position the welding position by superimposing the welding positions.

As shown in FIGS. 2 and 3, the clamp portion 26 is provided with two clamp claws 6 which are arranged to face each other in the lateral direction.
4, 64. V-grooves 64a are formed on opposing inner surfaces of the clamp claws 64, 64, and a number of comb teeth 64b are formed in the width direction (the direction in which the wires enter). The clamp claws 64, 64 have a built-in drive source operated by electric or fluid pressure such as an air chuck, a screw, a cam, or a link mechanism for separating and moving between an open position for releasing the electric wire and a closed position for gripping the electric wire. Have been.

Next, when the electric wires 14, 15, and 20 are overlapped and welded by using the welding jig 10 of the present invention, a method for performing the overlapping positioning and the tip position alignment of the electric wires with reference to FIG. I will explain while. First, the insulation coating of one, for example, two electric wires 14 and 15 is stripped off to expose the core wires 14a and 15a. Also, the other, for example, one electric wire 20 to be joined to this electric wire
Is stripped off to expose the core wire 20a (see FIG. 7C).

Next, as shown in FIG. 7A, the first stopper 16 is advanced to the stopper position A by the first stopper driving mechanism 18 of the welding jig 10. And electric wire 1
4 and 15 from the approach direction X,
The ends of the core wires a and 15a are brought into contact with the first stopper 16 to perform welding positioning of the core wire. That is, the overlapping positions of the core wires 14a and 15a are set, and the tip positions of the core wires 14a and 15a are aligned. The second stopper 22 is retracted to the non-stop position D by the second stopper drive mechanism 24.

Next, after the welding of the core wires 14a and 15a is completed, as shown in FIG.
Is held and clamped by the clamp portion 26 to prevent displacement of the electric wire. Thereafter, the first stopper 16 is moved backward to the non-stop position B by the first stopper driving mechanism 18, and the second stopper 2 is moved by the second stopper driving mechanism 24.
2 is advanced to the stopper position C so as to cover the core wires 14a and 15a.

Next, as shown in FIG. 7 (c), the other electric wire 20 is made to enter from the entering direction Y, the tip of the core wire 20a is brought into contact with the second stopper 22, and the welding position of the core wire 20a is determined. That is, the overlapping position of the core wire 20a is set, and the electric wire 20 is gripped and clamped by a clamp (not shown). Thereby, the core wire 14 of the electric wires 14 and 15
a, 15a and the core wire 20a of the electric wire 20 can be aligned in a correct position and superposed.

Thereafter, the second stopper 22 is retracted to the non-stopper position D, and the overlapped portion of these core wires is subjected to ultrasonic welding, resistance welding, laser beam welding, or the like.
8 (see FIG. 1 etc.) to join (connect) by welding.
After the joining, the electric wires are removed from the welding jig 10 to prepare for the next overlap welding operation of the electric wires.

In this welding jig 10, the target material to be welded is an electric wire of a wire harness for automobiles and equipment. However, other electric wires, conductive metal materials, and other non-conductive objects are not used. It can also be applied to metal filaments.
In the description of the method of use, the core wires 14a, 15
After the welding positioning of a, the wires 14, 15 are gripped and clamped by the clamp portion 26, but the wires 14, 15 are clamped in advance by another clamp portion, and the wires 14, 15 are moved in the approach direction by this clamp portion. The end of the core wire 14a may be brought into contact with the first stopper 16 by moving to X.
Further, after the tip of the core wire 20a of the other electric wire 20 abuts on the second stopper 22, the electric wire 20 is clamped, but the electric wire 20 is previously clamped by another clamp portion, and the clamp portion is moved in the approach direction Y. Then, the second stopper 22 may be brought into contact with the second stopper 22.

FIGS. 8 and 9 show a lap weld at each end of one of the electric wires 14 and the other electric wire 20 in FIGS. 1 to 7, and a core wire 66a, A welding jig 65 is shown for welding and joining the intermediate stripped portions 67, 69 of the electric wires 66, 68 (material to be welded) having the intermediate stripped portions 67, 69 formed by exposing 68a.

The welding jig 65 includes the welding jig 10
1 (see FIGS. 1 to 6), the intermediate stripping portions 6 of the electric wires 66, 68 having the intermediate stripping portions 67, 69 are further provided.
A comb tooth alignment member 70 for aligning the welding positions of 7, 69;
The members 70 hold the electric wires 66, 68 in which the welding positions of the intermediate peeling portions 67, 69 are aligned, and overlap and weld the ends of the electric wires 14, 20 (with the first stopper 16 in FIGS. (A region between the second stoppers 22) and an intermediate peeling portion positioning means 72 for positioning welding. The same reference numerals are used for the components having the same configuration and function as the welding jig 10, and the detailed description is omitted to avoid duplication.

The comb-like alignment member 70 of the welding jig 65
As shown in FIG. 10, a plurality of comb teeth 70b are formed at a predetermined pitch interval on an upper portion of a rectangular plate-like body 70a.
4, 66, etc., so that the position can be adjusted in the longitudinal direction. When the bracket 76 is fixed at a predetermined position, the wires 66, 68 having the intermediate peeling portions 67, 69 are connected to the wires 14, 2 by the intermediate peeling portion positioning means 72.
The terminal can be quickly and easily moved to a position facing the overlap welding position of the terminal of No. 0.

The intermediate peeling portion 6 is formed by the comb-shaped alignment member 70.
In order to align the welding positions of 7, 69, the intermediate peeling portion 67, the comb teeth 70b of the comb-like alignment member 70 of FIGS.
The core wires 66a, 68a of 69 are inserted, and the electric wires 66, 68 are moved rightward in, for example, FIGS. 8 and 9, so that the left-side stripped end surfaces of the intermediate stripped portions 67, 69 are placed on the left side surface of the rectangular plate 70a. This is done by contact.

The intermediate peeling portion positioning means 72 is shown in FIG.
As shown in FIG. 9, the comb-shaped alignment member 70 and the first stopper 16 and the second stopper 22 of the welding jig shown in FIGS.
, A slide rail 78 disposed on the frame 12, a slide block 80 slidably mounted on the slide rail 78, and a block 80 on the upper side of the slide block 80. The wires 66, 68 provided through a lifting mechanism (not shown) built in the slide block body and having intermediate peeling portions 67, 69 are connected to the slide block body 8 by screws, springs, fluid pressure, magnets, or the like.
0, and the electric wire 6 in which the welding positions of the intermediate peeling portions 67 and 69 are aligned by the comb-shaped alignment member 70 and the gripping member 82 fixed to 0.
Fluid pressure cylinder, screw moving mechanism, chain driven by electric motor, belt for moving slide block body 80 gripping 6, 68 with gripping member 82 to a position facing the overlap welding position of the terminals of electric wires 14, 20 It comprises a moving mechanism 84 such as a moving mechanism. In addition, the comb-shaped alignment member 7
Support members 74, 74 for holding the electric wires 66, 68 in a substantially horizontal state are provided on the frame 12 at the front and rear outer positions of the 0 and the intermediate peeling portion positioning means 72.

Next, a method of using the welding jig 65 will be described.
First, as shown in FIGS.
Are held in a substantially horizontal state by the support members 74, 74, and the core wires 66a, 68a of the intermediate peeling portions 67, 69 are combined with the comb teeth 70 of the comb-shaped alignment member 70.
b (see FIG. 10). And the electric wire 66,
8 and 9 is moved to the right in FIGS. 8 and 9 so that the left-side stripped end surfaces of the intermediate peeling portions 67 and 69 are rectangular plate-like bodies 70a.
By contacting the left side surface of the
The welding positions of 7 and 69 are aligned.

Next, the electric wires 66, 68 in which the welding positions of the intermediate peeling portions 67, 69 are aligned by the comb-shaped alignment member 70 are gripped by the slide block body 80 by the gripping member 82, and the gripping member 82 is not shown. The electric wires 66 and 68 and the intermediate peeling portions 67 and 69 are removed from the support members 74 and 74 and the comb-like alignment member 70 by being raised by a predetermined amount by the elevating mechanism. Then, as shown in FIG. 11, the slide block body 80 is moved by the moving mechanism 84 along the slide rail in the direction of the arrow, and the intermediate peeling portions 67 and 69 are connected to the electric wires 14 and 2.
The terminal is moved to a position facing the overlap welding position of the terminal of No. 0 (the area between the first stopper 16 and the second stopper 22 in FIGS. 1, 7 and the like).

Next, as shown in FIG.
The intermediate peeling portions 67 and 69 of the first and second stoppers 6 and 68
6 and the second electric wire 14, 20 between the second stopper 22
Is positioned at the overlap welding position of the terminal. The first stopper 16 and the second stopper 22 are retracted to the non-stopper positions B and D, respectively.

Next, as shown in FIG. 12B, the first stopper 16 is connected to the first stopper driving mechanism 18 (see FIG. 1 and the like).
To move down from the non-stopper position B to the stopper position A while moving forward.
Lightly press the heads of 6a and 68a.

Next, as shown in FIG. 12 (c), one of the electric wires 14 is made to enter from the entering direction X, and
Is brought into contact with the first stopper 16 to perform welding positioning of the core wire. That is, the overlapping position of the core wire 14a is set. The second stopper 22 is retracted to the non-stopper position D by the second stopper drive mechanism 24 (see FIG. 1 and the like).

Next, after welding positioning of the core wire 14a of the electric wire 14 is completed, as shown in FIG.
The wires 68 and 14 are gripped and clamped by the clamp portion 26 to prevent displacement of these wires. Thereafter, the first stopper 16 is retracted to the non-stop position B by the first stopper driving mechanism 18, and the second stopper 22 is covered by the second stopper driving mechanism 24 over the core wires 66a, 68a, 14a. Then, it is advanced from the non-stopper position D to the stopper position C.

Next, as shown in FIG. 12 (e), the other electric wire 20 is made to enter from the entering direction Y,
Is brought into contact with the second stopper 22 to perform welding positioning of the core wire 20a, that is, the overlapping position of the core wire 20a is set, and the electric wire 20 is gripped and clamped by a clamp (not shown). Thereby, the core wire 14 of the electric wires 14 and 20
a, 20a and the core wires 66a, 68a of the electric wires 66, 68 can be aligned at the correct positions and superposed.

Thereafter, as shown in FIG.
The stopper 22 is retracted to the non-stopper position D, and the overlapped portions of these core wires are welded and joined (connected) by a welding device 28 (see FIG. 1 and the like) that performs ultrasonic welding, resistance welding, laser beam welding, and the like. . After the joining is completed, these wires are removed from the welding jig 65 to prepare for the next work of lap welding of the wires.

In this welding jig 65, the target material to be welded is the electric wire of a wire harness for automobiles and equipment, but other electric wires, conductive metal materials, or other non-conductive objects. It can also be applied to metal filaments.
In the description of the method of using the welding jig 65, the electric wire 14 is gripped and clamped by the clamp portion 26 after the welding positioning of the core wire 14a of the electric wire 14 is completed.
4 may be clamped by another clamp portion, and the electric wire 14 may be moved in the approach direction X by this clamp portion so that the tip of the core wire 14 a contacts the first stopper 16. Further, after the tip of the core wire 20a of the other electric wire 20 abuts on the second stopper 22, the electric wire 20 is clamped.
0 may be clamped in advance by another clamp portion, and this clamp portion may be moved in the approach direction Y to abut on the second stopper 22.

[0053]

As described above, according to the first aspect of the present invention,
According to the welding jig described in (1), a first stopper for abutting the tip of one of the materials to be welded and positioning the welding,
A first stopper drive mechanism for moving the first stopper between a stopper position where the tip of one of the workpieces abuts and a non-stopper position retracted from the stopper position; It is provided so as to face the first stopper at an interval corresponding to the overlap length of the materials to be welded in a direction opposite to the entry direction, and the tip of the other material to be overlapped on one material to be welded is brought into contact with the first stopper. A second stopper for performing positioning of the welding, a second stopper driving mechanism for moving the second stopper between a stopper position where the tip of the other material to be contacted and a non-stopper position retracted from the stopper position, With respect to the first and second stoppers, a clamp portion is provided on the side opposite to the direction in which one of the workpieces enters, and the clamp portion grips one of the workpieces. It is possible to set the superposition position correctly.

Further, the tip positions of a plurality of materials to be welded can be correctly aligned, and the overlap length of one and the other materials to be welded will not be too short or too long. It is possible to correctly set the overlapped portion of the welding material in a range necessary for welding without excess or shortage. Therefore, the overlapped portion of the materials to be welded does not cause poor welding, and the welding strength of the portion is improved. Therefore, even if an external force such as tension is applied, the joint is not likely to be damaged, and the joint is not damaged. Quality and reliability are improved.

Further, since the overlapping length does not become longer than necessary, the tip of the material to be welded does not protrude to the outside, the joint becomes compact, and there is a possibility that the member may be caught by another member and damaged. Since this is eliminated, the storage and handling of the material to be welded are simplified. In addition, since it is not necessary to shape the outer peripheral surface of the joint, the formation of the joint is facilitated, and the number of operations can be reduced.

Further, since the quality and reliability of the joint are improved, the production yield of the material to be welded is improved, the quality check of the joint can be simplified, and the time required for forming the joint is shortened. Therefore, work efficiency is improved, and it becomes easy to mass produce good quality welded products at a low price.

When the welding jig of the present invention is used, the joining state of the joining portion is stable and firm. Therefore, when the material to be welded is an electric wire or a conductive metal wire material, Resistance does not increase, and conduction failure due to vibration or the like does not occur, and a failure of an electric system such as a system, equipment, or device using the same can be prevented, and reliability and durability can be improved.

Next, a welding jig according to a second aspect of the present invention is the welding jig according to the first aspect, wherein the welding position of the intermediate peeling portion of the material to be welded having the intermediate peeling portion is aligned. A gripping member and a material to be welded in which the welding positions of the intermediate peeling portions are aligned with the member, and the welding is performed by moving the material to a position facing the overlap welding position of the terminal of the material to be welded according to claim 1. And an intermediate peeling portion positioning means for performing positioning. According to such a configuration, when the overlapped portion of the terminal of the material to be welded and the intermediate peeled portion are welded and joined, the intermediate peeled portion is correctly opposed to the overlap welding position of the terminal of the material to be welded. It is possible to make the welding part of the overlapped part and the intermediate peeling part
Since the welding strength of the joint is improved, the quality and reliability of the joint can be improved.

[Brief description of the drawings]

FIG. 1 is a view showing a basic configuration of a welding jig according to the present invention, wherein (A) is a schematic plan view and (B) is a schematic perspective view.

FIG. 2 is a plan view showing a specific configuration of a welding jig according to the present invention.

FIG. 3 is a front view of the welding jig shown in FIG. 2;

FIG. 4 is a left side view of the welding jig shown in FIG. 2;

FIG. 5 is a front view showing a main configuration of a first stopper drive mechanism in the welding jig shown in FIG. 2;

FIG. 6 is a front view showing a main configuration of a second stopper drive mechanism in the welding jig shown in FIG. 2;

FIGS. 7A to 7C are explanatory views showing the operation method of the welding jig according to the present invention in the order of steps.

FIG. 8 is a front view showing a comb-like alignment member and an intermediate peeling portion positioning means of a welding jig according to another embodiment of the present invention.

FIG. 9 is a plan view of the welding jig of FIG. 8;

FIG. 10 is an enlarged front view of a comb-like alignment member in the welding jig of FIG. 8;

FIG. 11 is a plan view of the welding jig of FIG. 8 in a state where the stripped portion of the wire having an intermediate stripped portion has been moved to a position facing a lap welding position of an end of the wire.

FIGS. 12A to 12F are explanatory views showing the operation method of the welding jig of FIG. 8 in the order of steps.

FIG. 13 is a schematic view showing a state in which materials to be welded are overlapped by a conventional method.

FIG. 14 is a schematic view showing another example of a state in which materials to be welded are overlapped by a conventional method.

[Explanation of symbols]

10, 65 welding jig 12 frame 14, 15 one electric wire 14a, 15a, 20a, 66a, 68a core wire 16 first stopper 16a electric wire contact portion 16b long hole 18 first stopper drive mechanism 20 other electric wire 22 second stopper 24 second stopper drive mechanism 26 clamp part 28 welding device 30 linear drive type actuator 32 piston rod 34 L-shaped slider 36 guide groove 38 position adjustment bolt 40, 42 connecting small link piece 44 bearing bracket 46, 48 connecting shaft 50 slender slot 52 Advancing / retracting movable arm 54, 56 Connecting shaft 58 Rotation drive actuator 60 Key 62 Lock bolt 64 Clamp claw 64a V groove 64b Comb tooth 66, 68 Electric wire 67, 69 Intermediate peeling part 70 Comb tooth alignment member 70a Rectangular plate-shaped body 70b Comb teeth 72 Middle Peeling part positioning means 74 Support member 76 L-shaped bracket 78 Slide rail 80 Slide block body 82 Grasping member 84 Moving mechanism A, C Stopper position B, D Non-stopper position P Position of movable arm (low position) Q Position of movable arm Position (high position) X, Y Approach direction

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshikatsu Shimazu 1000, Amako, Oji, Kora-cho, Inugae-gun, Shiga Prefecture Inside Furukawa Automotive Parts Co., Ltd. F-term (Reference) in Automotive Parts Co., Ltd. 4E070 AA03 AB14 BA02 BA20 EA02 5E051 LA10 LB01

Claims (2)

[Claims] A first stopper for abutting the tip of one of the materials to be welded to position the welding; a first stopper for contacting the tip of the one material to be welded; A first stopper driving mechanism for moving back and forth between the stopper position and a first stopper which is spaced from the first stopper in a direction opposite to a direction in which one of the workpieces enters, and corresponding to an overlap length of the workpieces; A second stopper that is provided so as to be opposed to the first workpiece and overlaps with one of the workpieces and abuts against the tip of the other workpiece to perform welding positioning; A second stopper driving mechanism for moving back and forth between a stopper position with which the stopper comes into contact and a non-stopper position retracted from the stopper position;
A welding jig further comprising a clamp portion provided on a side opposite to a direction in which one of the workpieces enters with respect to the second stopper, and gripping the one of the workpieces. 2. A comb-like alignment member for aligning a welding position of an intermediate peeling portion of a material to be welded having an intermediate peeling portion, and a gripping member to be welded having the welding position of the intermediate peeling portion aligned by the member. An intermediate peeling portion positioning means for positioning the welding by moving the terminal of the material to be welded to a position opposed to the lap welding position of the end of the material to be welded according to claim 1. Welding jig.