KR20060110759A - Spot welding apparatus of lead wire, and processing apparatus using the same - Google Patents

Abstract

An equipment for spot welding of lead wires, which is capable of spot welding the lead wires to electrodes certainly and efficiently and performing bending of the lead wires efficiently and certainly, and a processing apparatus using the same are provided. As a lead wire spot welding equipment for spot welding lead wires to welding objects made of metal, the lead wire spot welding equipment comprises: a lead wire feeding part(A) for aligning and feeding the lead wires; a welding object feeding part(B) for aligning and feeding the welding objects to spot welding locations; and a lead wire welding part(C) comprising a lead wire holding mechanism for holding the lead wires fed from the lead wire feeding part, a location determining mechanism for controlling moving locations of the lead wire holding mechanism to determine locations of the lead wires at the spot welding locations, and a welding mechanism for welding the lead wires to the welding objects. The lead wire feeding part comprises lead wire feeding hoppers(20a,20b) and part feeders(22a,22b). The welding object feeding part comprises a welding object storing part(30), a hopper device(32) and a chute(34). The lead wire holding mechanism comprises a pair of lead wire holding arms(40a,40b) and rotation motors(42a,42b).

Description

Spot welding apparatus of lead wire and processing apparatus using the same {SPOT WELDING APPARATUS OF LEAD WIRE, AND PROCESSING APPARATUS USING THE SAME}

BRIEF DESCRIPTION OF THE DRAWINGS The top view of the processing apparatus which integrated the spot welding apparatus of a lead wire, and the lead forming apparatus.

2 is a side view of the processing apparatus of FIG. 1.

3 is a front view showing the structure of a lead welding part.

4 is an enlarged front view of the configuration of the main part of the lead welded portion;

5 is a plan view showing the structure of a lead welding part.

6 is a front view showing the configuration of a bending die of the lead forming apparatus.

7 is a plan view of the die portion of the bending die;

8 is a side view of a die and punch guide.

9 is an explanatory diagram showing an intermediate state in which a spot welded product is bent by using a bending die;

10 is an explanatory diagram showing an enlarged configuration of the main part of FIG. 9;

11 is an explanatory diagram showing a state in which a spot welded product is bent by using a bending die;

12 is an explanatory diagram showing an enlarged configuration of main parts of FIG. 11;

Fig. 13 is a front view in which part of the structure showing the structure of the arrestor is broken;

14 is a perspective view of a spot welded product in which the lead wire is spot welded to the arrester body;

15 is an explanatory diagram showing a configuration of a conventional lead bending device.

(A) is a front view which shows the structure of the conventional lead bending apparatus, FIG. 16 (b) is a front view of the arrester product from which the lead wire was deformed.

Explanation of symbols for the main parts of the drawings

10: arrester body 12a, 12b: electrode

14a, 14b: lead wire 15: arrester product

15a: spot welded product 20a, 20b: feed hopper

22a, 22b: parts feeder 31: expectation

32: hopper device 34: chute

35: alignment unit 36: pressing piece

40a, 40b: Support arm 41a, 41b: Retention block

42a, 42b: Swivel motor 43a, 43b: Socket

44a, 44b: spring 45a, 45b: sliding guide

46a, 46b: bearing 47a, 47b: sliding plate

48: lead insertion motor 50a, 50b: drive motor

52a, 52b: sliding guide 54: support plate

55: sliding guide 56: drive motor

60a, 60b: welding block 62: feeding hand

70 transfer mechanism 80 die portion

82: die 82a: storage recess

82b: Guide Groove 84: Punch Guide

84a: slit 90: bending punch

92: lead bending punch 92a, 92b: lead bending part

93: lead press punch 95: bullet spring

96: stopper 100: lower base

102: upper base

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spot welding apparatus of a lead wire and a processing apparatus using the same, and more particularly, to a spot welding apparatus of a lead wire used for manufacturing an astere product or the like formed by spot welding a lead wire to an electrode. And a processing apparatus using the spot welding apparatus of this lead wire.

Fig. 13 shows a bent L-shape at both sides of the arrester body 10 formed by sealing electrodes 12a and 12b on both end faces of a cylindrical portion 11 made of an insulator such as ceramic. The bipolar arrester product 15 to which the lead wires 14a and 14b of the shape (iii) were attached is shown.

This arrester product 15 has the electrodes 12a and 12b sealed to both end faces of the tubular portion 11 in the high-pressure gas apparatus, and as shown in FIG. 14, the electrodes are provided on the side surfaces of the electrodes 12a and 12b. It is produced by spot welding the lead wires 14a and 14b approximately perpendicular to the surface, and then bending the lead wires 14a and 14b at right angles in the vicinity of the welding position.

In the conventional manufacturing method of manufacturing this arrester product 15, it sets in the jig for taking many of the arrester main body 10 and lead wires 14a, 14b, and pitches a jig by a spot welding apparatus. During the transfer, a voltage is applied between the lead wires 14a and 14b and the electrodes 12a and 12b to weld them. After spot welding, the transfer blade 16 and the bending blade 17 as shown in FIG. The lead wires 14a and 14b are bent using the forming apparatus used to obtain a product. The conveying blade 16 is provided with a plurality of set recesses 16a for setting the arrester body 10 at equal intervals in the circumferential direction, and the bending blades 16 are conveyed as shown in Fig. 16A. A pair of blades 16 are provided in an arrangement sandwiching between both sides, and the lead wires 14a and 14b are bent and formed by rotating the transfer blade 16 and the bending blade 17 in opposite directions.

[Patent Document 1] Japanese Unexamined Patent Publication No. 1-233075

In the conventional spot welding apparatus, since the operation which sets the arrester main body 10 and the lead wires 14a and 14b to a jig is performed by a human hand, there exists a problem that work efficiency is low and also lead wires 14a and 14b. ), When spot welding the electrodes 12a and 12b, there is a problem in that the productivity is low because the spot welding cannot be performed on the two lead wires 14a and 14b at the same time.

Moreover, when bending the lead wires 14a and 14b, in the method of forming using the transfer blade 16 and the bending blade 17 shown in FIG. 15, as shown in FIG. 16B, the lead wire 14a And 14b), there is a problem that the lead wires 14a and 14b are displaced from the bent positions at right angles by springback.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a spot welding apparatus for a lead wire capable of spot welding the lead wire to the electrode reliably and efficiently, and capable of efficiently and reliably bending the lead wire, and a processing apparatus using the same It aims to provide.

In order to achieve the above object, the present invention has the following configuration.

That is, as a welding device of a lead wire for spot welding a lead wire to a to-be-welded product made of metal, the direction of the workpiece to be welded is aligned with the supply portion of the lead wire for aligning and supplying the lead wire to the spot welding position. And a positioning mechanism for positioning the lead wire at the spot welding position by controlling the movement position of the supply portion of the workpiece to be supplied and the lead wire supporting the lead wire supplied from the lead wire supply portion, and the support mechanism of the lead wire. And a welding part of the lead wire having a welding mechanism for welding the lead wire to the workpiece to be welded.

The supply section of the lead wire includes a supply hopper for accommodating the lead wire, and a component feeder connected to the hopper for aligning and supplying the lead wire sent out from the hopper.

Further, a supply unit of the welded article is provided in connection with a hopper device having a dispensing means for accommodating the welded article and for discharging the welded article, and the hopper apparatus, and the spot welded article is welded to the spot. It is characterized by including a chute for guiding and transporting to a position.

Moreover, the said welding mechanism is equipped with the welding block which supports the said to-be-welded goods in the spot welding position, The support mechanism of the said lead wire rotates the support arm which supports a lead wire, and the said support arm. Pivoting to support and pivot the support arm between a feed stacking position at which the lead wire is transported and loaded from the supply portion of the lead wire, and a welding position for aligning and welding a lead wire to the welded object supported at the spot welding position ( I) A mechanism is provided.

Moreover, the said support arm is provided with the socket formed in the tubular shape in which the said lead wire is inserted and supported.

The positioning mechanism includes a drive control mechanism for moving the support mechanism of the lead wire in the X-Y direction to position the lead wire at the welding position of the workpiece.

The welded article is an arrester body in which electrodes are sealed at both end surfaces of a cylindrical portion, and a pair of lead wire supply portions for aligning and supplying lead wires welded to the electrodes of each of the arrester bodies; A pair of lead wire supporting mechanisms for supplying the arrester body for supplying the arrester body by aligning the direction of the arrester body at a spot welding position, and the lead wires supplied from the supply portions of the pair of lead wires; And a positioning mechanism for controlling the movement position of the support mechanism of the pair of lead wires to position the lead wire at the spot welding position, and a welding mechanism for welding the lead wire to the workpiece to be welded. It is characterized by including.

In addition, the welding mechanism is provided with a welding block for supporting the arrester main body at the spot welding position of the electrode surface of the electrode in a vertical direction, and the support mechanism of the lead wire supports the lead wire. And a pair of the support arms are rotated between a position where the lead wire is transferred from the supply portion of the lead wire, and a welding position for welding the welded object toward the lead wire supported by the spot welding position. A swing mechanism is provided.

Moreover, the processing apparatus provided with the spot welding apparatus of the said lead wire, and the lead forming apparatus which bends the lead wire of the spot welded article where the lead wire was spot-welded by the said spot welding apparatus, The said lead forming apparatus is bending process of the said lead wire. A bending die, comprising a bending punch for bending a lead wire between a die portion and the die portion, wherein the die portion includes a punch guide juxtaposed on the die and the die. Presses a lead bending punch which enters between the die and the punch guide and bends the lead wire, and bends the lead wire by the lead bending punch, and then bending the bending position of the lead wire between the die and the die. It is characterized by including a punch.

1 and 2 show the overall configuration of a processing apparatus used for producing an arrester product as an embodiment of a spot welding apparatus and a processing apparatus of a lead wire according to the present invention.

The processing apparatus of this embodiment is used for manufacturing the arrestor product 15 having the lead wires 14a and 14b bent in an L shape on both sides of the arrester main body 10 as shown in FIG. In fact, as shown in FIG. 1, the supply part (A) of the lead wire which comprises the spot welding apparatus of a lead wire, the supply part (B) of an arrester main body, and the welding part (C) of a lead wire are arrange | positioned at the front end of a processing apparatus. The lead forming apparatus D is arranged at the rear end of the apparatus.

Below, the spot welding apparatus of a lead wire is demonstrated first.

(Configuration of spot welding device of lead wire)

Lead part supply part (A):

The supply part A of a lead wire is provided with the supply hopper 20a, 20b of a lead wire, and the component feeders 22a, 22b provided in connection with each supply hopper 20a, 20b. In this embodiment, since two lead wires are simultaneously supplied to one arrester main body 10, a pair of component feeders 22a and 22b are arranged in parallel at predetermined intervals, and each component feeder ( It is set as the structure which connects supply hopper 20a, 20b to 22a, 22b.

A plurality of lead wires are accommodated in the supply hoppers 20a and 20b, and the lead wires are sent from the supply hoppers 20a and 20b to the component feeders 22a and 22b using vibration.

In this embodiment, supply parts for conveying lead wires having an outer diameter of 1 mm and supply paths for conveying lead wires having an outer diameter of 0.8 mm are provided in the component feeders 22a and 22b, respectively. When the component feeders 22a and 22b are attached to the supply hoppers 20a and 20b, the lead wires having a predetermined diameter can be transported by aligning which supply path to the lead wire delivery position in the supply hoppers 20a and 20b. have.

As shown in FIG. 2, in the spot welding apparatus of the lead wire of this embodiment, the supply hoppers 20a and 20b and the component feeders 22a and 22b are arrange | positioned in the position spaced apart upwards from the support stand 24. As shown in FIG.

Supply part (B) of the arrester body:

The supply part B of the arrester main body is arrange | positioned on the opposite side to the supply part A of a lead wire across the welding part C of a lead wire. The supply part (B) of the arrester includes a storage part (30) of the arrester body for storing a plurality of arrester bodies (10), a hopper device (32) for aligning and feeding the arrester body, and a hopper device (32). ) And a chute 34 provided therein.

The hopper device 32 aligns the direction of the arrester body 10 such that the electrodes 12a and 12b face left and right directions when the arrester body 10 is supplied to the spot welding device through the chute 34. For supply to the chute 34.

As shown in FIG. 2, the storage part 30 and the hopper apparatus 32 of the arrester main body 10 are arrange | positioned above the base 31. As shown in FIG. The chute 34 of the arrester body 10 for transferring the arrester body 10 sent out from the hopper device 32 to the spot welding position is a member formed in a tubular shape, and the In the vicinity, it is provided inclined so that a side may become low level, and is arrange | positioned in the substantially perpendicular direction from the front of the hopper apparatus 32 to the spot welding position.

Below the chute 34, there is provided a supply mechanism for supplying the arrester body 10 dropped from the chute 34 to the spot welding position one by one.

Weld of lead wire (C):

The welding portion C of the lead wire is a support mechanism of a lead wire for supporting the lead wires 14a and 14b to be welded to the electrodes 12a and 12b of the arrester body 10, and the lead wires 14a and 14b to the electrodes 12a and 12b. And a welding mechanism for welding the lead wires 14a and 14b to the electrodes 12a and 12b.

Leading Mechanism:

3 shows a state in which the welded portion C of the lead wire is viewed from the front direction. The above-described support mechanism of the lead wire is a swing mechanism for pivoting the support arms 40a and 40b of the pair of lead wires and the support arms 40a and 40b arranged at a vertical interval from side to side in a vertical plane. The motors 42a and 42b are provided. The swing mechanism is not limited to the swing motor, and the swing mechanism can be suitably used as long as the swing mechanism can be driven by adjusting the predetermined swing angle.

The state which saw the support arms 40a, 40b etc. from the front direction is expanded and shown in FIG. 4 shows a state in which the support arms 40a and 40b are supported in the vertical direction. At the front-end | tip of support arm 40a, 40b, the holding block 41a, 41b which detachably supports the lead wires 14a, 14b is provided. In reality, the sockets 43a and 43b formed in a cylindrical shape are attached to the holding blocks 41a and 41b, and the lead wires 14a and 14b are inserted into the sockets 43a and 43b.

The sockets 43a and 43b are for reliably holding the lead wires 14a and 14b and for ensuring electrical conduction during spot welding. The sockets 43a and 43b are provided for the wire portions of the lead wires 14a and 14b. It is formed in the inner diameter according to the outer diameter dimension, and it is fixed to the holding block 41a, 41b so that the axial line direction may become parallel to the axial direction of the support arms 40a, 40b.

The support arms 40a and 40b are movably supported in the axial direction by the sliding guides 45a and 45b, and are urged in the protruding direction by the springs 44a and 44b.

5, the planar arrangement | positioning of the welding part C of a lead wire is expanded and shown. 5 is a state in which the support arms 40a and 40b are rotated in the horizontal direction. Each of the support arms 40a and 40b is disposed opposite the component feeders 22a and 22b for supplying lead wires.

The sliding guides 45a and 45b are attached to the side surfaces of the support arms 40a and 40b, and the output shafts of the turning motors 42a and 42b are connected to the sliding guides 45a and 45b. The swing motors 42a and 42b are fixed on the sliding plates 47a and 47b, and the output shafts of the swing motors 42a and 42b are rotatable by bearings 46a and 46b respectively fixed to the sliding plates 47a and 47b. Is supported.

Positioning mechanism of lead wire:

The positioning mechanism for positioning the lead wires 14a and 14b at the spot welding position of the electrodes 12a and 12b includes a support mechanism for the lead wires including the support arms 40a and 40b in the Y direction (left and right directions: support). The mechanism which moves the mutual space | interval of arm mutually, and the support mechanism of the lead wire containing support arms 40a, 40b are moved to X direction (rear direction: the direction which welds with respect to a welding position). It is comprised by the mechanism to make.

The mechanism for moving the support mechanism of the lead wire including the support arms 40a and 40b in the Y direction includes the drive motors 50a and 50b in the Y direction and the sliding plates 47a and 47b as shown in FIG. It is comprised by the sliding guides 52a and 52b which guide and move to a Y direction. The drive motors 50a and 50b are individually connected to the sliding plates 47a and 47b, and the moving positions of the sliding plates 47a and 47b on the sliding guides 52a and 52b are defined.

The mechanism for moving the support mechanism of the lead wire including the support arms 40a and 40b in the X direction (front and rear direction), as shown in FIG. 3, supports the support plate 54 for supporting the sliding guides 52a and 52b. The sliding guide 55 which moves a guide in the direction, and the drive motor 56 which moves back and forth along the longitudinal direction of the sliding guide 55 are supported.

By using a servo motor as the drive motors 50a and 50b and the drive motor 56, the ball screw is rotated by the servo motor to control the movement positions of the sliding plates 47a and 47b and the support plate 54. The positioning of the support arms 40a and 40b in the XY direction can be performed. It is also possible to use a stepping motor instead of the servo motor.

Welding apparatus of lead wires:

A welding mechanism for welding the lead wires 14a and 14b to the electrodes 12a and 12b of the arrester body 10. In this embodiment, the welding block 60a for aligning and supporting the arrester body 10 and the lead wires; 60b). As shown in FIG. 4, the welding block 60a, 60b is provided with the guide part which guides and supports the left and right lead wires 14a, 14b, respectively, and the chute 34 is located in the left and right center part of the welding block 60a, 60b. The recessed part which accommodates the arrester main body 10 supplied from it is formed.

The welding blocks 60a and 60b have a height above the base 31 so that the height positions of the left and right lead wires 14a and 14b coincide with the welding positions of the electrodes 12a and 12b while the arrester body 10 is accommodated. Is set. That is, the spot welding position and the lead wire 14a of the arrester body 10 supported by the welding blocks 60a and 60b while supporting the lead wires 14a and 14b and the support arms 40a and 40b are rotated in the horizontal direction. , 14b), the support position of the arrester main body 10 in the welding blocks 60a and 60b is set.

In addition, in this embodiment, in order to position the arrester main body 10 at the spot welding position with respect to the one welding block 60a, the support position of the arrester main body 10 is fixed, and the other welding block 60b is provided. ) Is provided so as to be able to open and close in the front-rear direction at the upper end for accommodating the arrester main body 10 supplied from the chute 34, and the arrester main body 10 supplied from the chute 34. Is positioned at the spot welding position by pressure welding toward one block 60a, and is provided so as to rotate slightly in the horizontal direction.

In addition, the positioning mechanisms (moving mechanisms in the X-Y direction) of the lead wires including the welding blocks 60a and 60b and the support arms 40a and 40b are provided in a positional relationship that does not interfere with each other.

Just above the welding blocks 60a and 60b is provided with a supply hand 62 for supplying the arrester body 10 supplied from the chute 34 to the set position of the arrester body 10 of the welding blocks 60a and 60b. do. The lower part of the chute 34 is provided with an alignment part 35 for arranging and receiving the arrester body 10 supplied from the chute 34 in a vertical state with the electrodes 12a and 12b in the left and right directions. On the side of the alignment unit 35, the arrester main body 10 is prevented from falling from the alignment unit 35, and the arrester main body 10 is supplied one by one from the alignment unit 35. The pressing piece 36 which moves to the hand 62 is provided. The supply hand 62, the alignment part 35, and the press piece 36 comprise the supply mechanism which supplies the arrester main body 10 one by one to the spot welding position of the welding block 60a, 60b.

(The action of the spot welding device of the lead wire)

Next, the operation of spot welding the lead wires 14a and 14b to the arrester main body 10 using the above-described spot welding apparatus of the lead wire will be described.

As described above, the lead wires supplied to the supply hoppers 20a and 20b are sent out from the supply hoppers 20a and 20b to the component feeders 22a and 22b in turn, and the component feeders 22a and 22b provide head portions (spot welding). The lead wire is conveyed in a state of standing vertically with the side of the side as the upper side). The lead wires sent out to the ends of the component feeders 22a and 22b are picked up one by one by a conveying hand (not shown), and the sockets 43a supported by the holding blocks 41a and 41b of the support arms 40a and 40b are provided. 43b) respectively.

2 is a state in which the lead wires 14a and 14b are transferred from the component feeders 22a and 22b to the support arms 40a and 40b. As shown in FIG. 2, the operation of conveying and loading the lead wires 14a and 14b from the component feeders 22a and 22b to the support arms 40a and 40b is performed in a state in which the support arms 40a and 40b are vertically upward. Is executed.

Fig. 2 shows the upper end of the lead wires 14a and 14b inserted into the sockets 43a and 43b by the lead insertion motor 48 disposed above the support arms 40a and 40b, and the sockets 43a and 43b. Indicates the state where the lead wires 14a and 14b are inserted.

The lead wires 14a and 14b are formed in a shape in which the ends welded to the electrodes 12a and 12b are slightly enlarged in diameter in a nail head shape. Therefore, when the lead wires 14a and 14b are inserted into the sockets 43a and 43b so that the lead wires 14a and 14b are pierced downward by the lead insertion motor 48, the head portion of the lead wires 14a and 14b is connected to the socket ( The insertion positions of the lead wires 14a and 14b in the sockets 43a and 43b are defined in contact with the upper end surfaces of the 43a and 43b. Since the lead wires 14a and 14b are reliably supported in the sockets 43a and 43b, the sockets 43a and 43b communicate with the air flow paths, and the sockets 43a and 43b are connected. The lead wires 14a and 14b may be made to air-sorp in the inside.

When performing the operation of supplying the lead wires 14a and 14b to the support arms 40a and 40b, the operation of supplying the arrester body 10 to the welding spot positions of the welding blocks 60a and 60b is performed. The operation of supplying the arrester main body 10 to the spot welding position is performed by loosening the pressing piece 36 holding the arrester main body 10 stored in the alignment unit 35, and the lowermost arrester. The main body 10 is moved to the supply hand 62, while the arrester main body 10 is welded by the supply hand 62 while pressing the arrester body 10 of the next stage with the pressing piece 62. It is executed by supplying to the spot welding position of the block 60a, 60b. The arrester body 10 supported by the housing portion provided on the upper portion of the welding block 60b has a side surface at the support position of the welding block 60a because the welding block 60b is slightly rotated toward the one welding block 60a. This abuts and is positioned at the spot welding position.

On the other hand, with respect to the support arms 40a and 40b which supported the lead wires 14a and 14b, the drive motor 56 is driven to retreat to the spot welding position. The movement of the support plate 54 is stopped when the position of the X direction (front and rear direction) of the lead wires 14a and 14b supported by the support arms 40a and 40b coincides with the spot welding position, and the turning motors 42a and 42b ) To rotate the support arms 40a and 40b to the horizontal position. In FIG. 4, the state which rotates the support arms 40a and 40b from a vertical direction to a horizontal direction is shown with a broken line.

The operation of rotating the support arms 40a and 40b from the vertical direction to the horizontal direction is performed when the support arms 40a and 40b are rotated to the horizontal position, and the lead wires 14a and 14b supported by the support arms 40a and 40b. ) Is performed by controlling the positions of the sliding plates 47a and 47b so that the tip ends thereof are slightly spaced apart from the welding blocks 60a and 60b.

In the place where the support arms 40a and 40b are rotated to the horizontal position, the driving motors 50a and 50b are driven to move the sliding plates 47a and 47b in the Y direction and are supported by the welding blocks 60a and 60b. The support arms 40a and 40b are horizontally moved toward the arrester main body 10 so that the tips of the lead wires 14a and 14b abut against the electrodes 12a and 12b of the arrester main body 10.

A high voltage is applied between the sockets 43a and 43b and the welding blocks 60a and 60b where the end faces of the lead wires 14a and 14b touch the electrodes 12a and 12b of the arrester body 10. Then, the lead wires 14a and 14b are spot welded to the arrester body 10.

When spot welding the lead wires 14a and 14b to the electrodes 12a and 12b, the support arm 40a is provided from a position where the tips of the lead wires 14a and 14b contact the electrodes 12a and 12b of the arrester body 10. To drive the drive motors 50a and 50b slightly. As a result, the springs 44a and 44b are slightly contracted, and the arrester main body 10 is elastically pressed by the lead wires 14a and 14b so that the lead wires 14a and 14b are reliably secured. Spot welding to the main body 10 is carried out.

In the state where the lead wires 14a and 14b are spot-welded, as shown in FIG. 14, the lead wires 14a and 14b are welded to the center of the electrodes 12a and 12b substantially perpendicular to the electrode surface, and the lead wires 14a and 14b. ) Is projected to extend linearly from the electrodes 12a and 12b laterally.

After spot welding, the drive motors 50a and 50b are driven to move the sliding plates 47a and 47b to the left and right retracted positions with the support arms 40a and 40b in the horizontal direction. The sliding plates 47a and 47b are moved to the retracted position, and the turning arms 42a and 42b are driven to drive the turning arms 42a and 42b at the place where the lead wires 14a and 14b are pulled out from the sockets 43a and 43b. Rotate to the vertical position.

In this way, the parts lead 22a, 22b is returned to the state which can transfer the next lead wire 14a, 14b to the support arms 40a, 40b, and one spot welding operation is completed.

As described above, according to the spot welding apparatus of the lead wire of the present embodiment, the lead wires 14a and 14b and the arrester part 10 are automatically combined with each other by simply supplying the lead wire and the arrestor main body separately to the device. The spot welded product 15a in which the lead wires 14a and 14b are spot welded to the main body 10 is obtained.

According to this apparatus, since two lead wires 14a and 14b are spot-welded to the arrester main body 10 at the same time, an efficient welding operation can be performed and the lead wires 14a and 14b can be accurately placed on the arrester main body 10. It can be spot welded by positioning.

In addition, although the spot welding apparatus of the lead wire mentioned above performs spot welding of the lead wires 14a and 14b to the electrodes 12a and 12b provided in the both sides of the arrester main body 10, the spot welding apparatus of the lead wire which concerns on this invention is In addition to manufacturing an arrester product, it can be used for manufacture of the electrical component which carries out spot welding of a lead wire to a metal member, and is formed. As an electric component, in addition to spot welding a pair of lead wires across an electrode, the present invention can be applied to a product in which one lead wire is spot welded to a metal member, and the spot welding of lead wires is also performed at the center position of the workpiece. It is not limited to.

(Transfer mechanism of spot welded article)

The spot welded product 15a in which the lead wires 14a and 14b are spot welded to the arrester body 10 by the above-described method is provided behind the spot welding position by the transfer mechanism 70 shown in FIG. 2. Is transferred to the lead forming apparatus (D).

Although the conveyance mechanism 70 of this embodiment is provided with the conveyance bar in which the notch which supports the lead wire 14a, 14b of a spot welded product in the longitudinal direction was provided in the longitudinal direction by the predetermined space | interval, The conveying method is not specifically limited.

In the processing apparatus of this embodiment, when the spot welded product is conveyed by the transfer bar, an electrical short test of the spot welded product is performed. That is, the contact terminal which clamps the lead wires 14a, 14b of a spot welded product is provided in the middle of the conveyance path | route which conveys a spot welded product using a conveyance bar, and the test | inspection terminal with respect to the spot welded product conveyed to an inspection position. The lead wires 14a and 14b are clamped and a voltage of 100 volts is applied between the lead wires 14a and 14b to check whether they are electrically conductive. Since the lead wires 14a and 14b must be electrically insulated, the products electrically connected between the lead wires 14a and 14b are excluded at this point as defective products.

(Configuration of Lead Forming Device)

As for the spot welded product 15a conveyed to the lead forming apparatus by the said conveyance mechanism, the lead wires 14a and 14b are bent at right angles (L shape) with a lead forming apparatus.

Below, the structure of a lead forming apparatus is demonstrated first.

6 shows a front view of a bending die which is a main component of the lead forming apparatus. The bending die fixes the die portion 80 that supports the spot welded product to the lower base 100, and connects the lead wires 14a and 14b of the spot welded product to the upper base 102 with the die portion 80. It is formed by fixing the bending punch 90 for bending.

The lower base 100 is fixedly installed on the base 31, and the upper base 102 is guided by a tie-bar 104 standing upright on the lower base 100 to be movable in the vertical direction. The upper base 102 is connected to a press portion (not shown) through a shank 106, and the upper base 102 is driven up and down in the vertical direction by the press portion, and is bent together with the upper base 102. The punch 90 is driven up and down in the vertical direction.

In the lower base 100, as shown in FIG. 6, the die 82 which supports the spot welded product 15a which is a to-be-processed object, and the arrangement | positioning spaced apart a little from the side surface of the die 82 on both sides of the die 82 The punch guides 84 and 84 are fixed to the ends. The die 82 and the pair of punch guides 84 and 84 constitute the die portion 80.

FIG. 7 is a plan view showing the die 82 and the punch guides 84 and 84 attached to the lower base 100. FIG. 8A is a side view of the die 82, and FIG. Side view of the punch guide 84. As shown in FIG. 7, the die 82 and the punch guide 84 are formed in the block body of planar shape rectangular.

As shown in FIG. 8A, the upper end surface of the die 82 is provided with a semicircular accommodating recess 82a having a side shape for accommodating the spot welded product, and lead wires 14a on both sides of the die 82. , 14b) is provided with a guide groove 82b for bending molding.

As shown in FIG. 8B, the punch guide 84 allows the lead wires 14a and 14b to pass through when bending the lead wires 14a and 14b of the spot welded product supported by the die 82. At the same time, the slit 84a for restricting and guiding the bending directions of the lead wires 14a and 14b is provided so as to communicate from the upper end surface of the punch guide 84 to the vicinity of the base.

In FIG. 6, the bending punch 90 is relatively movable in the press direction with respect to the lead bending punch 92 fixed to the support block 91 fixed to the upper base 102 and the lead bending punch 92. The lead pressing punch 93 is provided.

The lead bending punch 92 is provided with a pair of lead bending portions 92a and 92b formed to a thickness in accordance with the separation distance between the side surface of the die 82 and the inner side of the punch guide 84. The lead bending parts 92a and 92b enter in the clearance gap between the side surface of 82 and the inner surface of the punch guide 84, respectively.

The lead pressing punch 93 is a punch for molding the lead wires 14a and 14b at a predetermined bending angle, and accommodates the arrester body 10 to clamp the lead wires 14a and 14b between the dies 82. The lower end of the guide pin 94 is formed in an inverted U-shape in front, and in sliding contact with the inner surfaces of the lead bending portions 92a and 92b to be movable along the lead bending punch 92. It is fixed to and supported.

The guide pin 94 is inserted into the through hole provided in the support block 91, and the lead press punch 93 is projected in the protruding direction (vertically downward) between the support block 91 and the upper end surface of the lead press punch 93. The bullet spring 95 which always presses is attached. The upper end of the guide pin 94 is formed of a head portion having a diameter larger than that of the pin portion of the guide pin 94, and the head portion abuts against the step portion of the insertion hole provided in the support block 91, whereby the lead The protruding position of the pressing punch 93 is regulated. The lead pressing punch 93 is provided such that the lower end of the punch projects downward from the lower end of the lead bending punch 92 during normal times (in the case of a mold heater).

On the base of the inner side of the lead bending punch 92, a stopper as a pressing part for regulating the position of homology when the lead pressing punch 93 is relatively homologous to the lead bending punch 92 ( 96) is fixed.

(Operation of lead forming device)

Next, the action of bending the lead wires 14a and 14b of the spot welded product 15a using the lead forming apparatus of the present embodiment will be described.

FIG. 6 shows a state in which a spot welded product 15a in which the lead wires 14a and 14b are spot welded by the spot welding device of the lead wire is set in the die portion 80 fixed to the lower base 100. The spot welded product 15a is supplied to the die part 80 from the spot welding position 15 of the lead wire by the conveyance mechanism 70 in the state in which the upper base 102 was retracted to the upper position.

In the state where the spot welded product 15a is set in the die part 80, the arrester main body 10 is set in the accommodating recess 82a formed in the upper end surface of the die 82, and the arrester main body 10 Lead wires 14a and 14b extending from both sides to the sides are inserted into the slits 84a of the punch guide 84. The leading ends of the lead wires 14a and 14b extend through the slit 84a of the punch guide 84 and protrude.

After the spot welded product 80a is set in the die portion 80, the upper base 102 is lowered, and the lead bending portions 92a and 92b of the lead bending punch 92 are die 82. And the lead wires 14a and 14b are bent between the punch guides 84 and 84. 9 shows a state where the lead bending portions 92a and 92b of the lead bending punch 92 are slightly inserted between the die 82 and the punch guides 84 and 84.

10 shows an enlarged arrangement of the lead bending punch 92 and the lead pressing punch 93 in FIG. 9.

When the base 102 is moved down, first, the lead pressing punch 93 abuts against the lead wires 14a and 14b of the spot welded product 15a from above, and leads the lead wires 14a and the upper surface of the die 82. Clamp 14b). Subsequently, the upper base 102 is further lowered so that the lead bending portions 92a and 92b of the lead bending punch 92 enter between the die 82 and the punch guides 84 and 84, and a right angled bending portion is formed. The lead wires 14a and 14b are bent in accordance with the outer shape of the die 82. The lead wires 14a and 14b are bent to enter the guide groove 82b provided on the side surface of the die 82.

Subsequently, the upper base 102 is further lowered, and the lead bending punch 92 is relatively lowered relative to the lead pressing punch 93 so that the lead wires 14a and 14b are bent and molded.

FIG. 11 shows a state where the upper base 102 is lowered to a position where the lead wires 14a and 14b are finally bent formed. When the upper base 102 descends to the bending forming position, the lead wires 14a and 14b are pressed and bent between the inner surfaces of the lead bending portions 92a and 92b of the lead bending punch 92 and the side surfaces of the die 82. . In addition, when the upper base 92 is lowered to the bending forming position, the stopper 96 abuts on the upper surface (rear face) of the lead pressing punch 92 to form the die 82 and the lead pressing punch 92. The lead wires 14a and 14b are bent and molded by this.

In FIG. 12, the structure of the lead bending punch 92, the lead pressing punch 93, the stopper 96, etc. in FIG. 11 is expanded and shown.

When the upper base 102 is lowered to the bending forming position (lowest position), the stopper 96 abuts on the upper surface (lower surface) of the lead pressing punch 93 so that the load from the press portion is stopped. 96 and the lead pressing punch 93 act on the lead wires 14a and 14b. As a result, the lead wires 14a and 14b are strongly clamped by the die 82 and the lead pressing punch 93, and the corner portions at the bending positions of the lead wires 14a and 14b are pressed by the mold to perform a reliable bending process. do.

In the lead forming apparatus of this embodiment, in addition to the operation of bending the lead wires 14a and 14b at right angles by the die 82 and the lead bending punch 92, the lead wires 14a and 14b are bent in a state where the lead wires 14a and 14b are bent. By further pressing and forming a portion near the bending position of the lead wires 14a and 14b between the punch 93 and the die 82 by a press load, a method of simply bending bending using a bending punch, or using a bending blade Compared with the method of bending molding, the lead wires 14a and 14b can be bent formed more reliably, and it becomes possible to solve the problem that the bending angle position of the lead wires 14a and 14b is shifted by spring back.

After lowering the upper base 102 to the lowermost position and making the stopper 96 abut on the back surface of the lead pressing punch 93, the so-called secondary bending process is performed, and then the upper base 102 is raised to the upper retracted position. Let's do it. After raising the upper base 102 to the retracted position, the molded product (arster product 15) is picked up from the die portion 80 by a take-out hand and stored in a storage tray (not shown).

When the upper base 102 is moved to an upward retracted position, the guide pin 94 inserted into the upper base 102 side against the pressing force of the elastic spring 95 is caused by the elastic force of the elastic spring 95. At the same time, the lead pressing punch 93 protrudes slightly below the lower end of the lead bending punch 92 and returns to its original position.

In this way, the next spot welded product 15a is supplied to the die | dye part 80 in the place where it returned to the mold heater state shown in FIG. 6, and the next lead forming operation is performed.

According to the lead forming apparatus of this embodiment, as described above, the lead wires 14a and 14b of the spot welded product 15a obtained by spot welding the lead wires 14a and 14b to the arrester body 10 are bent in an L shape. It can be used suitably as an automated device. In particular, according to the lead forming apparatus of the present embodiment, the lead wires 14a and 14b can be bent accurately in an L shape, and the two lead wires 14a and 14b can be bent at the same time, thereby enabling accurate and efficient lead forming. .

According to the spot welding position of the lead wire which concerns on this invention, a lead wire and an arrester main body can be supplied, and a spot wire can be spot-welded automatically to the electrode of an arrester main body, and a spot welded product can be obtained efficiently.

Moreover, according to the processing apparatus which concerns on this invention which integrated the spot welding apparatus and lead forming apparatus of a lead wire in the processing apparatus, the spot welding of a lead wire and the bending process of a lead wire can be performed efficiently and reliably.

Claims (11)

A spot welding apparatus of a lead wire for spot welding a lead wire to a to-be-welded article made of metal, A supply part of the lead wire for aligning and supplying the lead wires; A supply part of the to-be-welded product which supplies the to-be-welded product to the spot welding position by aligning the direction of a to-be-welded product, A positioning mechanism for positioning a lead wire at a spot welding position by controlling a moving position of a lead wire support mechanism for supporting a lead wire supplied from a supply portion of the lead wire, and for supporting the lead wire; A welding device for said lead wire having a welding mechanism for welding, comprising: a spot welding device for a lead wire. The method of claim 1, The supply portion of the lead wire, A supply hopper for accommodating the lead wires, And a parts feeder connected to the hopper and arranged to supply the lead wires fed out from the hopper. The method of claim 1, Supply part of the said to-be-welded goods, A hopper device having a dispensing means for accommodating the welded product and discharging the welded article; The spot welding apparatus of the lead wire provided with the chute which connects and connects the said to-be-held goods to the said spot welding position, and is connected to the said hopper apparatus. The method of claim 1, The welding mechanism is provided with a welding block for supporting the welded object at a spot welding position, The support mechanism of the lead wire, A support arm supporting the lead wire, A welding position in which the supporting arm is rotatably supported and the lead wire is positioned and welded to the conveyed stacking position where the lead wire is transported and loaded from the supply portion of the lead wire, and the welded object supported at the spot welding position; And a turning mechanism for rotating the support arm therebetween. The method of claim 4, wherein The said support arm is equipped with the socket formed in the cylinder shape by which the said lead wire is inserted, The spot welding apparatus of the lead wire characterized by the above-mentioned. The method of claim 1, The said position determination mechanism is equipped with the drive control mechanism which moves the support mechanism of the said lead wire in the X-Y direction, and arrange | positions the said lead wire to the welding position of the to-be-welded object, The spot welding apparatus of the lead wire. The method according to any one of claims 1 to 6, The to-be-welded product is an arrester body in which electrodes are sealed on both end surfaces of a cylindrical portion, A supply portion of a pair of lead wires for aligning and supplying lead wires welded to the electrodes of each of the arrester bodies; A supply part of the arrester body for supplying the arrester body in a spot welding position by aligning the direction of the arrester body; Positioning mechanism for positioning the lead wire at the spot welding position by controlling the movement position of the pair of lead wire support mechanisms respectively supporting the lead wires supplied from the supply portions of the pair of lead wires, and the support mechanism of the pair of lead wires. And a welding part of the lead wire having a welding mechanism for welding the lead wire to the workpiece to be welded. The method of claim 7, wherein The welding mechanism is provided with a welding block for supporting the arrester body at a spot welding position in the vertical direction of the electrode surface of the electrode; The support mechanism of the lead wire, A pair of support arms for supporting the lead wires, And a turning mechanism for rotating each of the pair of support arms between a position at which the lead wire is transferred from the supply portion of the lead wire and a welding position for welding the welded object to the welded object supported at the spot welding position toward the lead wire. Spot welding apparatus of the lead wire which there is. A processing apparatus comprising a spot welding apparatus for a lead wire according to any one of claims 1 to 6, and a lead forming apparatus for bending a lead wire of a spot welded article in which the lead wire is spot welded by the spot welding apparatus, The lead forming apparatus is a bending die for bending the lead wire, the lead forming device includes a die portion and a bending punch for bending the lead wire between the die portion, The die portion includes a die and a punch guide juxtaposed on the die, The bending punch, A lead bending punch that enters between the die and the punch guide to bend the lead wire, and a lead press punch for bending the lead wire bending position with the die after bending the lead wire by the lead bending punch. The processing apparatus characterized by including the. A processing apparatus comprising a spot welding device for a lead wire according to claim 7 and a lead forming device for bending a lead wire of a spot welded product in which the lead wire is spot welded by the spot welding device, The lead forming apparatus is a bending die for bending the lead wire, and includes a bending punch for bending the lead wire between a die portion and the die portion, The die portion includes a die and a punch guide juxtaposed on the die, The bending punch, A lead bending punch which enters between the die and the punch guide and bends the lead wire, and a lead pressing punch which bends the bending position of the lead wire with the die after bending the lead wire by the lead bending punch. Processing device characterized in that. A processing apparatus comprising a spot welding device for a lead wire according to claim 8 and a lead forming device for bending a lead wire of a spot welded product in which the lead wire is spot welded by the spot welding device, The lead forming apparatus is a bending die for bending the lead wire, and includes a bending punch for bending the lead wire between a die portion and the die portion, The die portion includes a die and a punch guide juxtaposed on the die, The bending punch, A lead bending punch which enters between the die and the punch guide and bends the lead wire, and a lead pressing punch which bends the bending position of the lead wire with the die after bending the lead wire by the lead bending punch. Processing device characterized in that.

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