CN211219119U

CN211219119U - Spot welding device

Info

Publication number: CN211219119U
Application number: CN201922007501.3U
Authority: CN
Inventors: 王军
Original assignee: Beijing CHJ Automotive Information Technology Co Ltd
Current assignee: Beijing CHJ Automotive Information Technology Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-08-11
Anticipated expiration: 2029-11-20

Abstract

The utility model provides a spot welding device relates to the technical field of vehicle welding production facility. The spot welding device includes: the device comprises a bearing plate, a first electrode arm, a second electrode arm, a first support and a first driving device; the first electrode arm is connected with the bearing plate, and one end of the first electrode arm is provided with a first electrode which is used for contacting with the inner surface of a part to be welded; the first support is fixed on the bearing plate, the second electrode arm is rotatably connected with the first support, a second electrode is arranged at the first end of the second electrode arm in a protruding mode, the first driving device is connected with the first support, and the driving end of the first driving device is hinged to the second end of the second electrode arm; the first driving device is used for driving the second electrode arm to swing at a first position and a second position in a reciprocating mode, and when the second electrode arm swings to the first position, the second electrode is made to be in contact with the folded edge of the to-be-welded part, wherein the folded edge is located on the inner surface of the to-be-welded part. The spot welding device solves the technical problem that in the prior art, spot welding leaves welding marks on the outer surface of a to-be-welded part.

Description

Spot welding device

Technical Field

The utility model relates to a technical field of vehicle welding production facility especially relates to a spot welding device.

Background

Spot welding is a common connection method in vehicle production, especially for welding of sheet metal parts on vehicles, such as vehicle panels.

However, as shown in fig. 1, in the conventional spot welding structure, when welding, the positive electrode a and the negative electrode B need to be in contact with two surfaces of the welded article C, respectively, so that welding marks are generated on both surfaces of the welded article C, and for the welded article whose surface appearance quality needs to be ensured, cleaning of the welding marks on the outer surface is required, but even cleaning of some serious surface welding marks cannot completely solve the appearance quality problem.

Therefore, the above technical problems are urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the utility model provides a spot welding device, for solving above-mentioned problem, the utility model mainly provides a following technical scheme:

an embodiment of the utility model provides a spot welding device, include:

the device comprises a bearing plate, a first electrode arm, a second electrode arm, a first support and a first driving device;

the first electrode arm is connected with the bearing plate, and one end of the first electrode arm is provided with a first electrode along a first direction;

the first support is fixed on the bearing plate, the second electrode arm is rotatably connected with the first support, a second electrode is arranged at one end of the second electrode arm in a protruding mode, the first driving device is connected with the first support, and the driving end of the first driving device is hinged to the other end of the second electrode arm;

the first driving device is used for driving the second electrode arm to swing at a first position and a second position in a reciprocating mode, and when the second electrode arm swings to the first position, an included angle between the protruding direction of the second electrode and the first direction is zero or an acute angle.

Specifically, the first direction is directed to the ground, and the first driving device drives the second electrode arm to move from the second position to the first position in a clockwise direction;

or, the first direction points to the sky, and the first driving device drives the second electrode arm to move from the second position to the first position in a counterclockwise direction.

Specifically, the body of the first driving device is hinged with the first bracket;

the second electrode arm comprises a cross arm and a right-angle arm, one end of the cross arm is connected with the first support arm of the right-angle arm, and a bend opposite to the bend angle of the right-angle arm is formed at the connection part;

the second electrode with the second support arm of right angle arm is connected, the second electrode be located the bent angle inboard and the protruding direction of right angle arm with the second support arm is parallel.

Specifically, the driving end of the first driving device is hinged to one end of a T-shaped connecting piece, the other two ends of the T-shaped connecting piece are respectively hinged to one end of a connecting rod and the first support, and the other end of the connecting rod is hinged to the other end of the cross arm;

the position of the cross arm close to the middle part is convexly provided with a first connecting frame, and the first connecting frame is rotatably connected with the first support.

Specifically, the embodiment of the utility model provides a spot welding device still includes:

and the driving end of the second driving device is connected with the second electrode and is used for driving the second electrode to reciprocate along the protruding direction of the second electrode.

the first support block is arranged on the first support, and when the second electrode arm swings to a first position, the second electrode is opposite to the first support block.

Specifically, the first electrode arm is bent and comprises a first straight arm and a second straight arm, the included angle of the first straight arm and the included angle of the second straight arm are right-angled, and the first straight arm is connected with the bearing plate;

the first electrode is connected with the end part of the second straight arm, and the first electrode is positioned on the bent inner side of the first electrode arm and protrudes towards the direction vertical to the second straight arm.

and the driving end of the third driving device is connected with the first electrode and is used for driving the first electrode to reciprocate along the first direction.

the second bracket, the second connecting frame and the fourth driving device;

the second support is fixed on the bearing plate, one end of the second connecting frame is connected with the first straight arm, the other end of the second connecting frame is rotatably connected with the second support, a body of the fourth driving device is hinged with the second support, and a driving end of the fourth driving device is hinged with the end part of the first straight arm.

and the second supporting block is arranged on the second support and is opposite to the first electrode, and is used for supporting the part to be welded.

the second electrode arms, the first support, the first driving device and the second electrodes form a plurality of anode mechanisms which are distributed on the bearing plate at intervals;

the first electrode arm and the first electrode form a cathode mechanism, the number of the cathode mechanisms is at least one, the cathode mechanisms are positioned on the side edge of the bearing plate, and the cathode mechanisms are arranged between any two anode mechanisms at intervals.

the welding initiation device is arranged on the bearing plate, and the plurality of second electrodes and the at least one first electrode are respectively connected with the welding initiation device;

the bearing plate comprises a base, wherein one side edge of the bearing plate is connected with the upper surface of the base and forms a preset angle with the upper surface of the base, and a fixed support frame is arranged between the bearing plate and the upper surface of the base.

Borrow by above-mentioned technical scheme, the embodiment of the utility model provides a spot welding device has following advantage at least:

the embodiment of the utility model provides a pair of spot welding device, the convex first electrode in first direction of edge that the first end of its first electrode arm set up can with treat the internal surface contact of welding, for example can be used as the negative pole when spot welding, the swing that the second electrode arm can reciprocate under first drive arrangement's drive, and when the second electrode arm swung the primary importance, the second electrode arm protrusion set up can be parallel between the direction of protrusion of second electrode and the first electrode, also can accompany the acute angle, the second electrode can contact with the hem that is located its inner surface of treating the welding like this, this second electrode can regard as the positive pole of spot welding. Furthermore the embodiment of the utility model provides a spot welding device, it can realize that two electrodes are located the same surface of treating the welding piece simultaneously, can carry out single face spot welding to the welding piece of treating that has the hem promptly, has avoided the electrode and has treated the outward appearance surface contact of welding piece, has avoided producing welding defects such as weld mark on the outward appearance surface of treating the welding piece, has solved current spot welding device and has been treating the problem that welding piece outward appearance surface left weld mark easily.

Drawings

FIG. 1 is a schematic view of a prior art spot welding apparatus;

fig. 2 is a schematic structural diagram of an anode mechanism of a spot welding device according to an embodiment of the present invention, in which a first electrode arm moves to a first position;

fig. 3 is a schematic structural diagram of an anode mechanism of a spot welding device according to an embodiment of the present invention, in which a first electrode arm moves to a second position;

fig. 4 is a schematic structural diagram of a cathode mechanism including a second electrode arm of a spot welding device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a cathode mechanism including a second electrode arm of another spot welding device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a spot welding device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another spot welding device according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another spot welding device according to an embodiment of the present invention.

The reference numerals in fig. 1 to 8 include:

a-a positive electrode, B-a negative electrode, C-a welded piece, 1-a bearing plate, 2-a first electrode arm, 21-a first straight arm, 22-a second straight arm, 3-a second electrode arm, 31-a cross arm, 32-a right-angle arm, 321-a first support arm, 322-a second support arm, 4-a first support, 5-a first driving device, 6-a first electrode, 7-a welded piece, 8-a second electrode, 9-a T-shaped connecting piece, 10-a connecting rod, 11-a first connecting frame, 12-a second driving device, 13-a first support block, 14-a third driving device, 15-a second support, 16-a second connecting frame, 17-a fourth driving device, 18-a second support block and 19-a welding initiating device, 20-a base, 201-a roller, 202-a fixed support frame, an M-anode mechanism and an N-cathode mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

As shown in fig. 1-8, an embodiment of the present invention provides a spot welding device, which includes: the device comprises a bearing plate 1, a first electrode arm 2, a second electrode arm 3, a first bracket 4 and a first driving device 5; the first electrode arm 2 is connected with the bearing plate 1, and one end of the first electrode arm 2 is provided with a first electrode 6 protruding along a first direction and used for contacting with the inner surface of a to-be-welded part 7; the first support 4 is fixed on the bearing plate 1, the second electrode arm 3 is rotatably connected with the first support 4, a second electrode 8 is convexly arranged at the first end of the second electrode arm 3, the first driving device 5 is connected with the first support 4, and the driving end of the first driving device 5 is hinged with the second end of the second electrode arm 3; the first driving device 5 is configured to drive the second electrode arm 3 to swing between a first position and a second position, and when the second electrode arm 3 swings to the first position, an included angle between a protruding direction of the second electrode 8 and the first direction is zero degree or an acute angle, so that the second electrode 8 contacts with the folded edge of the to-be-welded member 7, which is located on the inner surface of the to-be-welded member.

Specifically, loading board 1 is used for bearing above-mentioned first electrode arm 2, second electrode arm 3, first support 4, first drive arrangement 5 and other electronic control device, the main city carrier of welding initiation device 19 etc. in addition loading board 1 still need can bear and place and treat welding 7, for example can place and bear the door, the sheet metal spot welding spare that has the hem such as bonnet, loading board 1's shape and some auxiliary structure can treat welding 7's shape characteristics according to bearing promptly, and the structure of each part of the aforesaid realization spot welding work carries out specific setting, the embodiment of the utility model provides a do not do specific restriction.

The first electrode arm 2 and the second electrode arm 3 are used for arranging electrode components, the main body of the electrode component can be a rod-shaped piece, and the first electrode arm 2 and the second electrode arm 3 can be arranged in a proper bent shape or an arc shape according to the contact position of the electrode and a piece 7 to be welded. The first electrode arm 2 and the second electrode arm 3 are preferably made of a metal material with certain strength, such as an aluminum alloy or a steel material, an insulating member or an insulating material needs to be arranged between the first electrode arm 2 and the first electrode 6, or the first electrode arm and the first electrode are connected through the insulating member or the insulating material, and an insulating member or an insulating material needs to be arranged between the second electrode 8 of the second electrode arm 3, or the second electrode is connected through the insulating member or the insulating material.

The first electrode arm 2 can be used for arranging a negative electrode, whereby the first electrode arm 2 can be arranged as a fixed arm, between which the piece 7 to be welded can be placed in contact with the first electrode 6 on the first electrode arm 2, for example directly in contact with the first electrode 6 on the inner surface of the piece 7 to be welded. The first electrode 6 is arranged on the first electrode arm 2 in a protruding manner along a first direction, and the first direction is a direction pointed by the first electrode 6 when the inner surface of the to-be-welded part 7 is in contact with the first electrode 6, and the direction may be perpendicular to the ground or may form a certain angle with the ground, that is, the first direction may be specifically arranged according to the structural characteristics of the to-be-welded part 7.

The fixed connection between the first support 4 and the bearing plate 1 can be bolted connection, welding or clamping connection and the like, the first support 4 can be of a plate body structure and is connected with the bearing plate 1 through one side edge, the second electrode arm 3 can be hinged with the first support 4 in a rotating manner, and the first driving device 5 can be connected with the first support 4 in a rotating manner or in a fixed connection manner. The first driving device 5 can be arranged at one side of the first support 4, the second electrode arm 3 is rotatably connected to the side of the first support 4 opposite to the side connected with the bearing plate 1, and the first driving device 5 can drive the second electrode arm 3 to swing back and forth above the first support 4. Wherein the second electrode 8 may be used for providing the positive electrode.

The specific configuration of the first electrode 6 and the second electrode 8 may depend on the configuration of the welding position of the strip welded parts to be welded, for example, the first electrode 6 and the second electrode 8 may be the configuration of the pole arm with the electrode cap. The first driving device 5 may be a driving cylinder, a driving electric cylinder or a driving hydraulic cylinder, and the specific choice thereof may depend on the supporting facilities of the working site.

The embodiment of the utility model provides a pair of spot welding device, the convex first electrode 6 of edge first direction that its first end of first electrode arm 2 set up can with treat the internal surface contact of weldment 7, for example can be used as the negative pole when spot welding, second electrode arm 3 can reciprocal swing under the drive of first drive arrangement 5, and when second electrode arm 3 swung the primary importance, can be parallel between the protruding direction of second electrode 8 that second electrode arm 3 protrusion set up and first electrode 6, also can accompany the acute angle, second electrode 8 can with treat the hem contact that is located its internal surface of weldment 7 like this, this second electrode 8 can regard as the positive pole of spot welding. Furthermore the embodiment of the utility model provides a spot welding device, it can realize that two electrodes are located the same surface of treating welding 7 simultaneously, can be to having the hem treat that welding 7 carries out single face spot welding promptly, avoided the electrode with treat welding 7's outward appearance surface contact, avoided treating welding 7's outward appearance and produce welding defects such as weld mark on the surface, solved current spot welding device and be treating welding 7 outward appearance surface and leave the problem of weld mark easily.

In a specific embodiment, the first direction is towards the ground, for example, the first direction may be vertically towards the ground, or the first direction may be obliquely towards the ground, that is, the first direction is at an angle with the direction perpendicular to the ground, and the angle is preferably acute, so that the first driving device 5 drives the second electrode arm 3 to move from the second position to the first position in a clockwise rotation manner; alternatively, the first direction is directed skyward, for example, the first direction may be directed skyward vertically, or may be directed skyward obliquely, that is, the angle is preferably acute, and the first driving device 5 drives the second electrode arm 3 to move from the second position to the first position in a counterclockwise rotation manner.

Specifically, in order to realize the spot welding of the same surface of the to-be-welded member 7 with a folded edge, the first electrode 6 may be set as a fixed negative electrode, the second electrode 8 may be set as a positive electrode, the inner surface of the to-be-welded member 7 is directly contacted with the first electrode 6 during welding, and then the second electrode 8 is contacted with the folded edge of the inner surface of the to-be-welded member 7 by the above-mentioned rotation.

As shown in fig. 2 and 3, in a specific implementation, the body of the first driving device 5 is hinged to the first support 4; the second electrode arm 3 comprises a cross arm 31 and a right-angle arm 32, one end of the cross arm 31 is connected with a first support arm 321 of the right-angle arm 32, and a bend opposite to the bending angle of the right-angle arm 32 is formed at the connection position; the second electrode 8 with the second support arm 322 of right angle arm 32 is connected, second electrode 8 is located the bent angle of right angle arm 32 inboard and the protruding direction with the second support arm 322 is parallel.

Specifically, the bending between the cross arm 31 and the first support arm 321 of the right-angle arm 32 may be set to be an obtuse angle, and the connection between the first electrode arm 2 and the first support 4 and the first driving device 5 may be realized by providing the T-shaped connecting member 9, the connecting rod 10, and the first support 4, and the specific connection manner may be as follows: the driving end of the first driving device 5 is hinged with one end of a T-shaped connecting piece 9, the other two ends of the T-shaped connecting piece 9 are respectively hinged with one end of a connecting rod 10 and the first bracket 4, and the other end of the connecting rod 10 is hinged with the other end of the cross arm 31; a first connecting frame 11, which may be a U-shaped connecting frame or a rod, a block, or the like, is convexly disposed at a position of the cross arm 31 near the middle portion, the first connecting frame 11 is rotatably connected to the first support 4, and the first connecting frame 11 is disposed at a position outside a bend formed by the cross arm 31 and the first support 321.

Therefore, when the first driving device 5 drives the first electrode arm 2 to swing, the first electrode arm 2 can rotate a certain angle relative to the first support 4, and the driving end of the first driving device 5 further drives the first electrode arm 2 to rotate relative to the first support 4 through driving the T-shaped connecting piece 9.

As shown in fig. 2 to fig. 3, a limit block may be further disposed on the cross arm 31 near a position connected to the first support arm 321, so that when the first electrode arm 2 swings, the limit block and the first support 4 support the first electrode arm 2 to realize the swing limit of the first electrode arm 2.

As shown in fig. 2 and fig. 3, in a specific implementation, the spot welding device provided by the embodiment of the present invention further includes: and the second driving device 12 is arranged on the second support arm 322 of the right-angle arm 32, and the driving end of the second driving device 12 is connected with the second electrode 8 and is used for driving the second electrode 8 to reciprocate along the protruding direction of the second electrode.

Specifically, the second driving device 12 may be an electric cylinder, an air cylinder or a hydraulic cylinder, the connection manner between the second driving device 12 and the second support arm 322 may be a bolt connection, the driving end of the bolt needs to be arranged towards the protruding direction of the second electrode 8, and the second driving device 12 and the second electrode 8 may be connected through an insulating connecting rod, a block or the like. After the second electrode 8 can be swung to the first position at the second position through the arrangement of the second driving device 12, the second driving device 12 is further used for finely adjusting the protruding direction of the second electrode 8, namely, the part 7 to be welded is contacted with the first electrode 6, and after the second electrode 8 is swung to the first position along with the second electrode arm 3, the second driving device 12 can be further used for driving the second electrode 8, so that the second electrode 8 is contacted with the folded edge of the inner surface of the part 7 to be welded, and the welding quality is further ensured.

As shown in fig. 2 and fig. 3, in a specific implementation, the spot welding device provided by the embodiment of the present invention further includes: the first support block 13 is arranged on the first support 4, and when the second electrode arm 3 swings to a first position, the second electrode 8 is opposite to the first support block 13.

Specifically, the first holder 13 is a member for contacting the outer surface of the member to be welded 7 and holding the member to be welded 7, and the structure and shape of the first holder 13 may be determined according to the shape of the outer surface of the member to be welded 7, for example, the first holder 13 may have an arc-shaped holding surface.

As shown in fig. 4, in a specific implementation, the first electrode arm 2 is bent and includes a first straight arm 21 and a second straight arm 22, the included angle of which is a right angle, and the first straight arm 21 is connected to the carrier plate 1; the first electrode 6 is connected with the end part of the second straight arm 22, and the first electrode 6 is positioned on the bent inner side of the first electrode arm 2 and protrudes towards the direction vertical to the second straight arm 22.

Specifically, the first electrode arm 2 is set to be bent, so that the first electrode arm 2 can be suitable for the to-be-welded part 7 with radian at the edge, and the to-be-welded part 7 is prevented from interfering with the first electrode arm 2 when contacting with the motor.

As shown in fig. 4, further, wherein the spot welding device provided by the embodiment of the present invention further includes: and the third driving device 14, the third driving device 14 is arranged on the second straight arm 22, and a driving end of the third driving device 14 is connected with the first electrode 6 and is used for driving the first electrode 6 to reciprocate along the first direction.

Specifically, the third driving device 14 may be an electric cylinder, an air cylinder or a hydraulic cylinder, the connection manner between the third driving device 14 and the second arm 322 may be a bolt connection, the driving end of the third driving device needs to be arranged towards the protruding direction of the second electrode 8, and the third driving device 14 and the first electrode 6 may be connected through an insulating connecting rod, a block or the like. Through the setting of third drive arrangement 14, can drive first electrode 6 and finely tune in the first direction, after the position of drive adjustment first electrode 6 through third drive arrangement 14 promptly, can guarantee that first electrode 6 has good contact with the piece 7 that waits to weld, and then guarantee the welded quality to wait to weld 7 after putting on the spot welding device, if appear with first electrode 6 problem of contact failure, just can solve at the first direction motion through third drive arrangement 14 drive first electrode 6.

As shown in fig. 4 and fig. 5, in a specific implementation, the spot welding device provided by the embodiment of the present invention further includes: a second bracket 15, a second connecting frame 16 and a fourth driving device 17; the second support 15 is fixed on the bearing plate 1, one end of the second connecting frame 16 is connected with the first straight arm 21, the other end is rotatably connected with the second support 15, the body of the fourth driving device 17 is hinged with the second support 15, and the driving end of the fourth driving device 17 is hinged with the end of the first straight arm 21.

Specifically, the first electrode arm 2 may be configured to swing, so that the swing function of the first electrode arm 2 may be achieved by adding the second bracket 15, the second connecting bracket 16 and the fourth driving device 17, wherein the second bracket 15 may refer to the first bracket 4, the second connecting bracket 16 may refer to the first connecting bracket 11, and the fourth driving device 17 may be the same as the first driving device 5, i.e., may be an electric cylinder, an air cylinder or a hydraulic cylinder. In addition, the rotation form and the rotation direction of the first electrode arm 2 may be the same as those of the second electrode arm 3. After the first electrode arm 2 is also arranged in a swinging mode, when the part 7 to be welded is subjected to spot welding, the part 7 to be welded can be placed on the bearing plate 1, for example, the inner surface of the part to be welded can be placed upwards or downwards, the fourth driving device 17 is driven to drive the first electrode arm 2 to bring the first electrode 6 into contact with the inner surface of the part 7 to be welded, then the first driving device 5 is driven to drive the second electrode arm 3 to bring the second electrode 8 into contact with the folded edge of the inner surface of the part 7 to be welded, and the first electrode 6 and the second electrode 8 are simultaneously positioned on the inner surface of the part 7 to be welded for spot welding.

As shown in fig. 4 and fig. 5, in the specific implementation, the spot welding device provided by the embodiment of the present invention further includes: and the second supporting block 18 is arranged on the second bracket 15 and is opposite to the first electrode 6, and is used for supporting the part to be welded 7.

Specifically, the second support block 18 has the same function as the first support block 13, and is a part for supporting the member to be welded 7 in contact with the outer surface of the member to be welded 7, and the structure and shape of the second support block 18 may be determined according to the shape of the outer surface of the member to be welded 7, for example, the second support block 18 may also have an arc-shaped support surface.

As shown in fig. 6-8, in the specific implementation, the second electrode arm 3, the first support 4, the first driving device 5 and the second electrode 8 form a plurality of anode mechanisms M, and the anode mechanisms M are distributed on the carrier plate 1 at intervals, for example, disposed around the side edges of the carrier plate 1, three adjacent side edges, or two opposite side edges; the first electrode arm 2 and the first electrode 6 form a cathode mechanism N, the number of the cathode mechanisms N is at least one, the cathode mechanisms N are positioned on the side edge of the bearing plate 1, and the cathode mechanisms N are arranged between any two anode mechanisms M at intervals.

Specifically, the structural shape of the carrier plate 1 can be set according to the structure and shape of the to-be-welded part 7, and the anode mechanism M and the cathode mechanism N are located at the peripheral position of the carrier plate 1, and can be determined according to the position to be welded of the to-be-welded part 7, wherein the cathode mechanism N can realize spot welding work as long as one cathode mechanism N is provided, or a plurality of cathode mechanisms can be provided according to the process requirement, and the anode mechanism M needs to be specifically set according to the number of welding spots of the to-be-welded part 7.

As shown in fig. 6-8, a welding initiation device 19 and a base 20 may be further added, the welding initiation device 19 is disposed on the carrier plate 1, and the plurality of second electrodes 8 and the at least one first electrode 6 are respectively connected to the welding initiation device 19; a plurality of rollers 201 are arranged on the lower surface of the base 20; the edge of one side of the bearing plate 1 is connected with the upper surface of the base 20, and forms a preset angle with the upper surface of the base 20, and a fixed support 202 is arranged between the bearing plate 1 and the upper surface of the base 20.

Specifically, through the setting of gyro wheel 201 on base 20 and the base 20, make the embodiment of the utility model provides a spot welding device can walk by oneself to and carry out work as a mobilizable whole, improved spot welding device's suitability, the workman's of being convenient for simultaneously operation and removal.

Wherein, the angle of predetermineeing between loading board 1 and the base 20 upper surface can treat the angle that the weldment needs put when welding operation and decide, perhaps can be according to the staff operation of being convenient for and select suitable angle, perhaps can treat the weldment and select suitable angle according to being convenient for remove and place, the embodiment of the utility model provides a do not do specific injecing.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. A spot welding device, characterized in that it comprises:

the first driving device is used for driving the second electrode arm to swing at a first position and a second position, and when the second electrode arm swings to the first position, the included angle between the protruding direction of the second electrode and the first direction is zero degree or an acute angle.

2. Spot welding device according to claim 1,

the first direction is directed to the ground, and the first driving device drives the second electrode arm to move from the second position to the first position in a clockwise direction;

3. Spot welding device according to claim 1,

the body of the first driving device is hinged with the first bracket;

4. Spot welding device according to claim 3,

the driving end of the first driving device is hinged with one end of a T-shaped connecting piece, the other two ends of the T-shaped connecting piece are respectively hinged with one end of a connecting rod and the first bracket, and the other end of the connecting rod is hinged with the other end of the cross arm;

5. The spot welding apparatus according to claim 3, characterized by further comprising:

6. The spot welding apparatus according to claim 1, characterized by further comprising:

7. Spot welding device according to claim 1,

the first electrode arm is bent and comprises a first straight arm and a second straight arm, the included angle of the first straight arm and the included angle of the second straight arm are right-angled, and the first straight arm is connected with the bearing plate;

8. The spot welding apparatus according to claim 7, further comprising:

9. The spot welding apparatus according to claim 7, further comprising:

the second bracket, the second connecting frame and the fourth driving device;

10. The spot welding apparatus according to claim 9, further comprising:

and the second supporting block is arranged on the second support and is opposite to the first electrode, and is used for supporting a part to be welded.

11. Spot welding device according to claim 1,

12. The spot welding apparatus according to any one of claims 1 to 11, further comprising: