JPH0888069A - Wire bundling and holding device for ultrasonic welding, and core wire welding method employing the device - Google Patents

Abstract

PURPOSE: To automate work for bundling and holding wires in an ultrasonic welding work for the core wires. CONSTITUTION: The device is equipped with paired wire bundling hold members 12A and 12B provided with wire insertion opening sections 17A and 17B capable of being contracted and enlarged, a first drive means 30 contracting and enlarging the aforesaid opening section, and with a second drive means 40 allowing the paired wire bundling and holding means to be moved in the directions for approaching and parting the means along the longer direction of wires. And a core wire group bundled and held together is welded by inserting the welding vibrating piece 24 of an ultrasonic welding means 23 between the paired wire bundling and holding members 12A and 12B in a state that the tip ends of a plurality of core wires Wb and insulating covers Wa are bundled and held by the paired wire bundling and holding members 12A and 12B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire focusing and holding device for an ultrasonic welding machine for holding and holding a plurality of electric wires and performing ultrasonic welding of the core wires, and a core wire welding using the device. It is about the method.

[0002]

2. Description of the Related Art Conventionally, when the core wires of a plurality of electric wires are electrically connected to each other by ultrasonic welding, as shown in FIG. 4, the insulation coating Wa at one end of each electric wire W is peeled off to expose the core wire Wb. Then, ultrasonic welding is performed in a state of being bundled by the jig 1. In this jig 1, a rubber-made holding portion 3 is attached to a substantially U-shaped frame body 2, and a slit 4 is formed in the holding portion 3 from the center of the upper edge downward. The electric wires are inserted one after another so as to spread out, and a plurality of electric wires W are elastically held. In a state where the insulation coating Wa of the electric wire group is focused and held by the jig 1, as shown in FIG. 5, an operator manually supports the insulation coating side base of the core wire Wb exposed at the distal end side to perform ultrasonic wave. A core wire group is inserted between the vibrating pieces 6 of the welding device 6.

[0003]

However, in the above-mentioned conventional jig 1, in the case of ultrasonic welding, the electric wires W are bundled at the portion of the insulating coating Wa, so that variations easily occur on the core wire Wb side at the tip. , In many cases, it is in an unfocused state. Therefore, welding cannot be performed as it is. A worker is focusing the core wire Wb. Further, since the electric wire is held by the jig 1 on the side of the insulation coating Wa but not on the side of the core wire Wb, as shown in FIG. 5, the welding work is performed while holding the vicinity of the core wire Wb by hand. Must be done. Therefore, the worker may get injured because his finger is caught between the vibrating pieces 6 of the welding device 5. Therefore, this welding work must be performed carefully, resulting in a decrease in work efficiency.

The present invention has been made in view of the above-mentioned problems, and it is made possible to automatically focus a core wire and hold an electric wire at the time of welding work by an ultrasonic welding device without the need of a worker. Accordingly, it is an object of the present invention to provide an electric wire focusing and holding device for ultrasonic welding, which can improve the efficiency of ultrasonic welding work, and an ultrasonic welding method for a core wire using the device.

[0005]

In order to achieve the above object, in claim 1, a pair of electric wire focusing and holding members provided with an electric wire insertion opening which can be reduced and enlarged, and the electric wire insertion opening are provided. The pair of electric wire bundle-holding and holding means includes a first drive means for contracting or enlarging operation, and a second drive means for moving the pair of electric wire converging and holding means in a direction in which they approach or separate from each other along the longitudinal direction of the electric wires. Insert the welding vibrating piece of the ultrasonic welding device between the pair of electric wire focusing and holding members in a state that the core wire tips and insulating coatings of the plurality of electric wire groups are focused and held by the member, and weld the focused and held core wire group. An electric wire focusing and holding device for ultrasonic welding is provided.

In the pair of electric wire focusing and holding members, four slide plates are combined in a rectangular frame shape and the slide plates are moved relative to each other, whereby an electric wire insertion opening formed of a square hole surrounded by the slide plates is formed. The slide plate is moved by the first drive means so as to be reduced or enlarged. (Claim 2) Further, the pair of electric wire focusing and holding members are provided upright to face each other,
One end of the guide plate is fixed to the lower end of the one electric wire focusing and holding member, while the other end of the guide plate is inserted into a guide hole provided in the lower end of the other electric wire focusing and holding means, and as the second driving means. , Both sides of the screw rod are screwed through the screw holes formed in the electric wire focusing and holding members on both sides, and the gear is fixed to the substantially central portion of the screw rod. The electric wire focusing and holding member is configured to move toward and away from each other. (Claim 3)

Further, according to a fourth aspect of the present invention, a pair of electric wire focusing and holding members having an electric wire insertion opening which can be reduced and enlarged, and a first electric wire insertion opening which is contracted or expanded. A pair of electric wire focusing and holding members is used, which uses an electric wire focusing and holding apparatus including a driving means and a second driving means for moving the pair of electric wire focusing and holding members in a direction in which they approach or separate from each other along the longitudinal direction of the electric wires. While enlarging the electric wire insertion opening, the electric wire bundle holding member is in close proximity, the electric wire group with the core wire exposed at the tip is passed through the electric wire insertion opening, and then by the first driving means, The electric wire insertion opening of the pair of electric wire focusing and holding members is reduced, the electric wire group is focused and held, and then, by the second driving means, the pair of electric wire focusing and holding members are moved in directions away from each other, The one wire bundle holding member moves toward the core side from the tip of the insulating coating, and further moves to the tip of the core wire to align the core wires in the direction of the bundle, and then stop the second driving means to move the pair of wires. In the electric wire focusing and holding member, the tip side of the core wire and both sides of the insulating coating side are focused and held, and in this state, the welding vibrating piece of the ultrasonic welding device is placed in the space between the pair of electric wire focusing and holding members. Provided is a method of ultrasonically welding a core wire using an electric wire focusing and holding device, which is characterized in that the core wire is advanced and ultrasonically welded.

[0008]

According to the electric wire focusing and holding apparatus of the first aspect of the present invention, the pair of electric wire focusing and holding members are provided with the electric wire insertion openings thereof in an enlarged state, and the plurality of electric wires are covered with the insulating coating. Next, the electric wire insertion opening is reduced by the first driving means, and the insulating coating portion elastically holds the two portions. In this state, the second drive means moves the pair of electric wire bundle holding members so as to separate them while the electric wires are bundled and held, thereby aligning the electric wires. As a result, the core wire is held in a pulled state between both holding portions, that is, in a bundled state. As described above, in a state where both sides are held by the pair of electric wire focusing and holding members, the welding vibrating piece of the ultrasonic welding device is advanced between the pair of electric wire focusing and holding members to perform welding.

In the above wire bundle holding device, when the pair of wire bundle holding members has the structure described in claim 2, the wire insertion opening can be easily and surely reduced and expanded, and the wire is elastic when reduced. Can be held.
Further, when the pair of wire bundle holding members are configured as described in claim 3 and are moved in the length direction of the wire toward or away from each other, the core wires oriented in the disjointed direction are aligned. be able to.

Further, according to the method of claim 4, the worker only has to insert the electric wire group through the electric wire insertion openings of the pair of electric wire bundle holding members, and the subsequent core wire alignment. It is possible to automate work and wire holding work when welding core wires,
The manual work of the worker can be eliminated.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an electric wire focusing and holding device 11 for an ultrasonic welding machine.
3 is a schematic view showing a part of an ultrasonic welding device 23. FIG. The wire bundle holding device 11 includes a pair of wire bundle holding members 1
2A, 12B and these electric wire bundle holding members 12A, 12
The first drive means 30 for reducing and enlarging the wire insertion openings 17A, 17B provided in B, and the one wire bundle holding member 12B in the longitudinal direction of the wire group with respect to the one wire bundle holding member 12A. The second drive means 40 for moving is provided.

The electric wire focusing and holding members 12A and 12B are respectively composed of four slide plates 14 (14a, 14b, 14c, 1).
4d) are assembled to form a rectangular frame shape, and by sliding these slide plates with respect to each other, the electric wire insertion opening 17A surrounded by the four slide plates 14,
17B is reduced or enlarged. Specifically, as shown in FIG. 3A or 3B, each slide plate 14 has a ridge 15 formed at one end and a groove 16 formed at one side edge (either structure a or b may be used. However, in manufacturing,
The structure of a is preferred. ), Ridge 15 of each slide plate 14
Is slidably engaged with the groove portion 16 of the other slide plate 14 to form the wire insertion openings 17A and 17B each having a square hole in the center. This allows the second
The slide plate 14b is perpendicular to the first slide plate 14a, and the fourth slide plate 14d is the second slide plate 14b.
And the third slide plate 14c is slid horizontally and vertically.

The first driving means 30 for reducing or enlarging the electric wire insertion openings 17A, 17B surrounded by the four slide plates 14 is the second slide plate 14b and the third slide plate 14c. A wire 18 whose one end is connected to the actuator 18 and an actuator 19 which is connected to the other end of the wire 18. A spring 18a is provided on the wire 18 so that the wire 18 can slide the slide plate 1
4 is applied with a pulling force vertically and horizontally. The spring 18a includes an electric wire insertion opening 17A formed by each slide plate 14,
This is for elastically holding the electric wire W by 17B.

A pair of electric wire bundle holding members 12A, 12B, each of which is composed of four slide plates 14 assembled in the above-mentioned square frame shape.
Among them, the lower end of one electric wire focusing and holding member 12B is fixedly erected on the upper surface of one end of the guide plate 20. The other wire bundle holding member 12A has a guide hole 29 formed in the lower portion of the slide plate 14a at the lower end, and the other end of the guide plate 20 is slidably passed through the guide hole 29. Therefore, the guide plate 20 moves in the direction of the arrow in the drawing along the guide hole 29, so that the wire bundle holding member 12B moves toward and away from 12A.

The second drive means 4 for moving the electric wire focusing and holding member 12B in the direction of moving toward and away from the electric wire focusing and holding member 12B.
0 is formed by penetrating the screw holes 28A, 28B in the central portions of both of the first slide plates 14a, and the screw rod 21 is provided by screwing the screw portions 21a into the screw holes 28A, 28B. A gear 22 is fixed to the central portion of the screw rod 21, and the gear 22 is engaged with another gear fixed to a shaft of a motor (not shown) so that the gear 22 can rotate in either forward or reverse directions. The screw portion 21a
Are cut in the opposite directions with the gear 22 sandwiched therebetween, and the electric wire focusing and holding members 12A and 12B are moved so as to be contactable and separable by rotating the gear 22 in the forward and reverse directions.

The pair of electric wire focusing and holding members 12A and 12
In the space sandwiched by B, a pair of upper and lower vibrating reeds of the ultrasonic welding device 23 arranged adjacent to each other in a state where they are opened with a space therebetween are advanced as shown by arrows in the figure, and after welding, It is possible to move back to the original position.

Next, a method of ultrasonically welding electric wires using the above apparatus will be described. First, the insulation coating Wa on the tip end of the electric wire W is peeled off to expose the core wire Wb, and a plurality of the electric wire bundle holding members 12A and 12B are assembled in a state where the core wires Wb are aligned so that the tip positions thereof are aligned. The electric wire is inserted into the electric wire insertion openings 17A and 17B surrounded by.
At this time, the opening area of the wire insertion openings 17A and 17B is set to the maximum area shown in FIG. 2A, so that the wire group can be easily inserted from the opening 17A side to 17B. . Also, the wire bundle holding members 12A and 1
The interval with 2B is set to a narrow, minimum interval as shown in FIG. The pair of electric wire focusing and holding members 12A
In the electric wire group passing through the wires 12B and 12B, the tip of the insulating coating Wa near the core wire Wb is located at a position surrounded by the electric wire bundle holding member 12B.

In this state, the actuator 19 is driven to move the third slide plate 14c and the fourth slide plate 14d to the left in the horizontal direction with respect to the first slide plate 14a and the second slide plate 14b, and the second slide plate 14b and The fourth slide plate 14d is slid vertically downward with respect to the first slide plate 14a and the third slide plate 14c. Thereby, the wire insertion openings 17A, 17
B is reduced, and the inserted electric wire W has an electric wire insertion opening 17
The insulating coating Wb is elastically held at the edges of the slide plate 14 forming A and 17B.

Then, by driving a motor or the like (not shown), the screw rod 21 is rotated via the gear 22, and the electric wire focusing and holding member 12A is engaged with the screw portion 21a via the screwing portion with the first slide plate 14a. 12B and 12B are moved apart. As a result, the position where the electric wire W is held while being pulled can be changed by the edge portions of the electric wire insertion openings 17A and 17B. That is, one wire bundle holding member 12B moves from the tip of the insulating coating Wa toward the core wire Wb side and further to the tip of the core wire Wb, and in the moving process, the core wires Wb which are in different directions are moved in the same direction. Focus while aligning. The other wire bundle holding member 12
A moves in the opposite direction from the tip side of the insulating coating Wa, and plays a role of aligning the electric wire groups in the insulating coating portion. At the time of the above movement, since the spring 18a elastically holds the core wire Wb, the wire insertion opening 17B is automatically reduced even if the holding position is changed from the insulating coating Wa to the core wire Wb. Can be held.

When the wire bundle holding members 12A and 12B reach a predetermined position, the rotation of the motor is stopped and the screw rod 2 is stopped.
Stop rotation of 1. Thereby, the wire bundle holding member 1
2A and 12B stop moving. As shown in FIG. 2B, at this stop position, the electric wire focusing and holding member 12B focuses and holds the vicinity of the tip of the core wire Wb, and the electric wire focusing and holding member 12A focuses and holds the insulating coating Wa. As described above, since the electric wires are held in the pulled state by both the electric wire focusing and holding members 12B and 12A, the insulating coating portion of the electric wire and the portion of the core wire Wb between them are held in a focused state.

Then, the ultrasonic welding device 2 is provided between the electric wire focusing and holding members 12A and 12B spaced apart from each other.
3, the vibrating pieces 24 facing each other in the vertical direction are horizontally moved to be interposed, and the core wire Wb located between the pair of electric wire bundle holding members 12A and 12B is sandwiched between the vibrating pieces 24. In this case, since the core wire Wb is in the focused state as described above, it is possible to smoothly position the core wire Wb between the vibrating pieces 24. In addition, by adding ultrasonic vibration, the core wire W
When b is welded, since both sides of the welded portion are held by the pair of wire bundle holding members 12A and 12B, the core wires Wb can be reliably welded to each other.

After the welding work is completed, the slide plate 14 of the wire bundle holding members 12A, 12B is operated by the first drive means 30 to open the wire insertion openings 17A, 17B.
open. As a result, the electric wire group welded at the core wire Wb can be easily removed from the electric wire focusing and holding device 11. And, in preparation for the next step, the motor is driven to drive the gear 22.
Is rotated to move the electric wire focusing and holding members 12A and 12B to the close positions shown in FIG. 2 (a).

In the above embodiment, the electric wire W is held by the slide plate 14, but the electric wire W is held by expanding and contracting the circular insertion hole like a diaphragm of a camera. Good.

[0024]

As is apparent from the above description, in the device according to the first aspect of the present invention, a plurality of electric wire bundle holding means provided with the electric wire insertion openings to be reduced or enlarged are used to form a plurality of electric wire bundle holding means. The electric wire group is elastically held at two places, and in this held state, the core wire focused in the space sandwiched by the both side holding portions is ultrasonically welded, so that the worker holds the electric wire group during ultrasonic welding work. There is no need. Further, the electric wire focusing and holding means can be moved along the length direction of the electric wire by the second moving means, and by this movement, the portions of the core wire and the insulating coating which are oriented in the disjointed direction can be aligned and focused. Conventionally, this focusing work was manually performed by a worker, but this can be automated. in this way,
Conventionally, an operator can manually perform both the work of collecting electric wires and the work of pressing the electric wire during welding, which can greatly improve the work efficiency and make ultrasonic welding easy and reliable. It becomes possible to do it.

With the configurations of claims 2 and 3,
The electric wires can be bundled without difficulty, and the electric wire bundle holding member can be smoothly moved to a required position in a state where the electric wires are bundled.

According to the method of claim 4, the labor of the worker can be saved, the work efficiency can be improved, and the injured worker who is likely to be caused during the welding work can be eliminated. Work safety can be improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an electric wire focusing device and an ultrasonic welding device for an ultrasonic welding machine according to an embodiment.

FIG. 2 is a perspective view showing a usage state of the apparatus shown in FIG.

FIG. 3 is a cross-sectional view showing an engaged state of the slide plates of FIG.

FIG. 4 is a perspective view showing an electric wire holding state of an electric wire focusing device according to a conventional example.

5 is a perspective view showing a welding work state by the apparatus of FIG. 4. FIG.

[Explanation of symbols]

 11 wire bundle holding device 12A, 12B wire bundle holding member (14 (14a, 14b, 14c, 14d) slide plate 17A, 17B wire insertion opening 18 wire 19 actuator 20 guide plate 21 screw rod 22 gear 30 first drive means 40 Second drive means W Electric wire Wa Insulation coating Wb Core wire

Claims (4)

[Claims] 1. A pair of electric wire bundle holding members provided with a wire insertion opening that can be reduced and expanded, a first drive means for reducing and expanding the electric wire insertion opening, and a pair of electric wire bundles. A second drive means for moving the holding means in the direction of moving toward or away from each other along the longitudinal direction of the electric wires, wherein the pair of electric wire focusing and holding members collectively hold the core wire tips and insulations of the plurality of electric wire groups. And a wire vibrating piece for welding of an ultrasonic welding device is inserted between the pair of electric wire focusing and holding members to fuse the focused and held core wire group. . 2. The pair of electric wire converging / holding members are formed by combining four slide plates into a rectangular frame shape and moving the slide plates relative to each other to form an electric wire insertion opening consisting of a square hole surrounded by these slide plates. The wire bundle holding device according to claim 1, wherein the slide plate is moved by the first drive means such that the portion is reduced and expanded. 3. A pair of electric wire focusing and holding members are provided upright to face each other, one end of a guide plate is fixed to a lower end of one electric wire focusing and holding member, and the other end of the guide plate is another electric wire focusing and holding means. Through the guide hole provided at the lower end of the screw rod, and as the second driving means, screw both sides of the screw rod into the screw holes formed in the wire focusing and holding members on both sides to penetrate the screw hole.
The electric wire according to claim 1 or 2, wherein a gear is fixed to a substantially central portion of the screw rod, and the electric wire focusing and holding members on both sides are moved toward and away from each other by the rotation of the gear via the screw rod. Focus holding device. 4. A pair of electric wire bundle holding members having a wire insertion opening that can be reduced and enlarged, a first drive means for reducing and expanding the electric wire insertion opening, and a pair of electric wire bundles. An electric wire focusing and holding device having a second driving means for moving the holding members in a direction in which the holding members move toward and away from each other along the longitudinal direction of the electric wires, and enlarges the wire insertion openings of the pair of electric wire focusing and holding members. At the same time, in a state in which these wire bundle holding members are close to each other, the wire group with the core wire exposed at the tip is passed through the wire insertion opening, and then the wire insertion of the pair of wire bundle holding members is performed by the first driving means. The common opening is reduced to bundle and hold the wire group, and then the second drive means moves the pair of wire bundle holding members in a direction away from each other, and one wire bundle holding member has an insulating coating. From the tip of the core to the core side and further to the tip of the core to align the cores in the same direction, and then stop the second drive means. Both ends of the tip side and the insulation coating side are focused and held, and in this state, the welding vibrating piece of the ultrasonic welding device is advanced into the space between the pair of electric wire focusing and holding members, and the focused core wire is ultrasonicated. An ultrasonic welding method for a core wire using an electric wire focusing and holding device, which is characterized by welding.