Integrated welding device based on composite electrode

Abstract

The invention relates to an integrated welding device based on a composite electrode, belongs to the technical field of anti-collision stiffening beam welding, and adopts a mechanical closed-loop transmission design of an unbiased switching assembly to replace a traditional servo drive index plate and a pneumatic locking mechanism by rigid linkage of a rotating ring part and a check ring part. A closed-loop groove in the rotating ring part drives the check ring part to precisely rotate through a guide rod, so that the electromagnetic interference risk of the servo encoder is eliminated, and the positioning precision of electrode switching is ensured; the rigid connection structure of the supporting part and the check ring part avoids abrasion of the pneumatic sealing piece, and micro displacement caused by high-frequency vibration is restrained; meanwhile, through the vertical layout of the rotating ring part and the check ring part and the compact mechanical linkage design, the size of the device is greatly reduced, the device is adaptive to the space constraint of a narrow station of the anti-collision beam, and the problems of unbiased switching and rigid self-locking of an electrode mode are solved through a mechanical structure under the welding working conditions of high vibration and high impact; and the compact space and high-takt requirements of anti-collision beam welding are met.

Description

Technical Field

[0001] The present invention belongs to the technical field of anti-collision reinforcement beam welding, and specifically relates to an integrated welding device based on a composite electrode. Background Art

[0002] In the field of automobile manufacturing, the welding quality of anti-collision reinforcement beams is directly related to the safety performance of vehicles. The current common integrated welding device with a composite electrode integrates stud welding and spot welding processes through a 180° rotation of a indexing plate. It uses a split fixture and a pneumatic locking mechanism in cooperation with a servo drive system. Although it has advantages in reducing equipment costs and improving process connection efficiency, it exposes significant defects in mass production stability and adaptability. Specifically, it is manifested as follows: under high-frequency vibration and impact conditions, the encoder of the servo-driven indexing plate is vulnerable to electromagnetic interference and signal distortion, resulting in out-of-tolerance positioning accuracy during electrode mode switching; at the same time, the pneumatic locking mechanism accelerates the wear of sealing elements due to long-term high-frequency welding impacts, causing air pressure circuit leakage and non-linear attenuation of the locking force, thus resulting in micron-level displacement of the indexing plate during welding, directly affecting the uniformity of stud welding penetration and the quality of spot welding nugget formation.

[0003] In addition, this integrated solution is restricted by physical space limitations. The indexing plate rotation mechanism and the servo drive unit occupy a large area, and it is prone to spatial interference with positioning fixtures in the narrow welding stations of multi-directionally bent anti-collision beams. This structural conflict not only restricts the path planning freedom of welding robots, but also reduces the accessibility of complex surface solder joints. Especially when dealing with anti-collision beams with special-shaped cross-sections in the lightweight design of new energy vehicle models, existing equipment is difficult to meet the spatial layout requirements of high-density solder joints. Under the combined effects of mechanical vibration, positioning drift, and space limitations, the welding qualification rate ultimately fluctuates, restricting the process stability of high-tempo production lines. In view of this, an integrated welding device based on a composite electrode is proposed. Summary of the Invention

[0004] To solve the above problems existing in the prior art, the present invention provides an integrated welding device based on a composite electrode, which solves the problem of how to achieve deviation-free switching of electrode modes and rigid self-locking through a mechanical structure under high-vibration and high-impact welding conditions, while avoiding the reliability shortboards of servo systems and pneumatic components, and adapting to the compact space and high-tempo requirements of anti-collision beam welding.

[0005] The object of the present invention can be achieved by the following technical solutions:

[0006] An integrated welding device based on a composite electrode, comprising a control system, a composite electrode, a conductive component, a pressure mechanism and a deviation-free switching component that are respectively communicatively connected to the control system. The split electrode head of the composite electrode is arranged on the deviation-free switching component, and the deviation-free switching component is used for switching the split electrode head of the composite electrode; the deviation-free switching component includes a support part, a rotating ring part rotatably arranged on the support part, a retaining ring part rotatably arranged on the support part and a connecting part arranged on the retaining ring part. The connecting part is used for connecting the split electrode head of the composite electrode. The rotating ring part is perpendicular to the open retaining ring part. An arc-shaped groove and a straight groove are formed on the rotating ring part. The arc-shaped groove and the straight groove communicate with each other to form a closed loop. The open retaining ring part is connected to the rotating ring part through a guide rod, and the guide rod is located within the closed loop formed by the communication of the arc-shaped groove and the straight groove. The rotating ring part drives the guide rod to rotate through the arc-shaped groove, the guide rod drives the retaining ring part to rotate, and the retaining ring part drives the connecting part to reverse, so that the position of the split electrode head of the composite electrode is switched.

[0007] As a further solution of the present invention, the rotating ring part is a rotating ring, and the cross-section of the rotating ring is circular. The arc-shaped groove and the straight groove are formed on the rotating ring, and the arc-shaped groove and the straight groove communicate with each other to form a closed loop.

[0008] As a further solution of the present invention, both the arc-shaped groove and the straight groove are formed on a quarter ring of the rotating ring, and the arc-shaped groove and the straight groove are staggered.

[0009] As a further solution of the present invention, the support part includes a support sleeve and an open snap ring connected to the support sleeve. The support sleeve is located at the center of the ring of the rotating ring, and the ring body of the rotating ring is located within the open snap ring. The support sleeve is connected to the top wall of the ring body of the rotating ring through a first connecting rod, and the ring body of the rotating ring and the first connecting rod can penetrate through the open snap ring.

[0010] As a further solution of the present invention, the retaining ring part is rotatably arranged within the open snap ring, and the retaining ring part is an open rotating block. The first connecting rod can penetrate through the open rotating block and the open snap ring. The connecting part is a second connecting rod, and the second connecting rod is arranged at the end of the open rotating block far away from the opening. The split electrode head of the composite electrode is arranged on the second connecting rod.

[0011] As a further solution of the present invention, the opening width of the open rotating block is equal to the opening width of the open snap ring.

[0012] As a further solution of the present invention, a guide block is vertically arranged on the inner side wall of the opening of the open rotating block, and the guide block is located within the closed loop formed by the arc-shaped groove and the straight groove.

[0013] As a further solution of the present invention, the guiding block is cylindrical, and the diameters of the guiding block, the width of the arc-shaped groove and the width of the straight groove are the same.

[0014] As a further solution of the present invention, a U-shaped support frame is provided at one end of the opening rotating block close to the opening. The two vertical rods of the U-shaped support frame are respectively connected to the side walls on both sides of the opening of the opening rotating block. A third connecting rod is connected to the center of the cross bar of the U-shaped support frame. The spot welding electrode head of the composite electrode is arranged on the second connecting rod, and the stud welding electrode head of the composite electrode is arranged on the third connecting rod.

[0015] The beneficial effects of the present invention are as follows:

[0016] By adopting a mechanical closed-loop transmission design with a deviation-free switching component, replacing the traditional servo-driven indexing plate and pneumatic locking mechanism with the rigid linkage of the rotating ring part and the retaining ring part, the closed-loop groove on the rotating ring part drives the retaining ring part to rotate precisely through the guiding rod, eliminating the risk of electromagnetic interference of the servo encoder and ensuring the positioning accuracy of electrode switching; the rigid connection structure between the support part and the retaining ring part avoids the wear of pneumatic seals and suppresses the micro-displacement caused by high-frequency vibration; at the same time, the vertical layout and compact mechanical linkage design of the rotating ring part and the retaining ring part greatly reduce the volume of the device, adapt to the space constraints of the narrow working station of the anti-collision beam, thereby improving the welding stability and the accessibility of the welding points, solving the problem of achieving deviation-free switching and rigid self-locking of the electrode mode through a mechanical structure under high-vibration and high-impact welding conditions, while avoiding the reliability short board of the servo system and pneumatic components, and adapting to the compact space and high beat requirements of anti-collision beam welding. Description of the Drawings

[0017] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the drawings.

[0018] Figure 1 It is an overall perspective view of the deviation-free switching component of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the support part of the present invention;

[0020] Figure 3 It is an installation schematic diagram of the U-shaped support frame of the present invention;

[0021] Figure 4 It is an installation schematic diagram of the guiding block of the present invention.

[0022] Main Component Symbol Description:

[0023] In the figure: 1. Supporting part; 11. Supporting sleeve; 12. Open snap ring; 2. Rotating ring part; 21. Arc-shaped groove; 22. Straight groove; 3. Retaining ring part; 4. Connecting part; 5. First connecting rod; 6. Guide block; 7. U-shaped support frame; 8. Third connecting rod; 9. Driving part. Detailed implementation manner

[0024] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following combines the drawings and preferred embodiments to elaborate in detail on the specific implementation manner, structure, features and their effects of the present invention as follows.

[0025] Please refer to Figure 1 - Figure 4 As shown in the figure, this embodiment provides an integrated welding device based on a composite electrode, including a control system, a composite electrode, a conductive component, a pressure mechanism and a deviation-free switching component that are respectively communicatively connected to the control system. The split electrode head of the composite electrode is arranged on the deviation-free switching component, and the deviation-free switching component is used to switch the split electrode head of the composite electrode; the deviation-free switching component includes a supporting part 1, a rotating ring part 2 rotatably arranged on the supporting part 1, a retaining ring part 3 rotatably arranged on the supporting part 1 and a connecting part 4 arranged on the retaining ring part 3. The connecting part 4 is used to connect the split electrode head of the composite electrode. The rotating ring part 2 is vertically arranged with the open retaining ring part 3. An arc-shaped groove 21 and a straight groove 22 are formed on the rotating ring part 2. The arc-shaped groove 21 and the straight groove 22 communicate to form a closed loop. The open retaining ring part 3 is connected to the rotating ring part 2 through a guide rod. The guide rod is located within the closed loop formed by the communication of the arc-shaped groove 21 and the straight groove 22. The rotating ring part 2 drives the guide rod to rotate through the arc-shaped groove 21. The guide rod drives the retaining ring part 3 to rotate, and the retaining ring part 3 drives the connecting part 4 to reverse, so that the split electrode head of the composite electrode switches positions; the rotating ring part 2 is connected with a driving part 9. The driving part 9 is a motor. The split electrode head of the composite electrode is composed of a copper alloy with excellent electrical conductivity (such as chromium zirconium copper) and a high-temperature resistant material (such as tungsten copper). The former is used for spot welding pressurization, and the latter integrates a stud welding conductive interface. The conductive component includes a stud welding conductive module and a spot welding conductive circuit. The stud welding conductive module provides an instantaneous large current through a high-frequency inverter power supply for the melting and welding of studs. The spot welding conductive circuit adopts a low-impedance design and provides a continuous current through a constant voltage or constant current power supply; the pressure mechanism is a double-acting cylinder or a servo pressure system, providing a constant pressure during spot welding and a higher dynamic pressure during stud welding; it also includes a cooling system. The cooling system is an internal circulation water cooling channel for cooling the electrode head and the conductive module.

[0026] It should be noted that the above-mentioned unbiased switching component realizes electrode switching through the mechanical linkage between the rotating ring part 2 and the retaining ring part 3, without relying on a servo motor and an encoder. The closed-loop track formed by the arc-shaped groove 21 and the straight groove 22 drives the rotation of the retaining ring part 3 through the guide rod mentioned below. The mechanical structure itself has a deterministic motion trajectory, avoiding positioning drift caused by signal distortion. And the guide rod here is a rigid guide rod; the rigid connection between the support part 1 and the rotating ring part 2, and the support sleeve 11 and the snap ring 12 form a stable mechanical framework, reducing the vibration transmission path. The motion of the guide rod in the closed-loop groove transmits power through rigid contact, without pneumatic locking, avoiding the risk of air pressure leakage. The rotating ring part 2 and the retaining ring part 3 are vertically arranged, and electrode switching is realized through mechanical linkage, greatly reducing the axial space occupation compared with the traditional indexing plate.

[0027] The currently common integrated welding device for composite electrodes realizes the integration of stud welding and spot welding processes through the 180° rotation of the indexing plate, and adopts a split fixture and a pneumatic locking mechanism in cooperation with a servo drive system. Although it has advantages in reducing equipment costs and improving the process connection efficiency, it exposes significant defects in mass production stability and adaptability, specifically manifested as follows: in the high-frequency vibration and impact working conditions of the servo-driven indexing plate, the encoder is vulnerable to electromagnetic interference and signal distortion, resulting in out-of-tolerance positioning accuracy during electrode mode switching; at the same time, the pneumatic locking mechanism accelerates the wear of sealing elements due to long-term high-frequency welding impacts, causing air pressure circuit leakage and non-linear attenuation of the locking force, resulting in micron-level displacement of the indexing plate during welding, directly affecting the uniformity of stud welding penetration and the quality of spot welding nugget formation. In addition, this integrated solution is restricted by physical space limitations. The indexing plate rotation mechanism and the servo drive unit occupy a large area, and it is easy to have spatial interference with the positioning fixture in the narrow welding station of the multi-directional bending structure of the anti-collision beam. This structural conflict not only restricts the path planning freedom of the welding robot, but also reduces the accessibility of complex-shaped surface solder joints. Especially when dealing with the special-shaped cross-section anti-collision beam of the new energy vehicle model's lightweight design, the existing equipment is difficult to meet the spatial arrangement requirements of high-density solder joints. Under the combined effects of mechanical vibration, positioning drift and space limitations, the welding qualification rate finally fluctuates, restricting the process stability of the high-tempo production line.

[0028] To solve the above problems, a mechanical closed-loop drive design with a non-deviation switching component is adopted. The rigid linkage between the rotating ring part 2 and the retaining ring part 3 replaces the traditional servo-driven indexing disc and pneumatic locking mechanism. The closed-loop groove on the rotating ring part 2 drives the retaining ring part 3 to rotate precisely through the guide rod, eliminating the electromagnetic interference risk of the servo encoder and ensuring the positioning accuracy of the electrode switching. The rigid connection structure between the support part 1 and the retaining ring part 3 avoids the wear of the pneumatic seal and suppresses the micro-displacement caused by high-frequency vibration. At the same time, the vertical layout of the rotating ring part 2 and the retaining ring part 3 and the compact mechanical linkage design greatly reduce the volume of the device, adapt to the space constraints of the narrow working station of the anti-collision beam, and thus improve the welding stability and the accessibility of the welding points.

[0029] In order to further ensure the positioning accuracy of the electrode switching, in one embodiment, the rotating ring part 2 is a rotating ring, and the cross-section of the rotating ring is circular. The arc-shaped groove 21 and the straight groove 22 are opened on the rotating ring. The arc-shaped groove 21 and the straight groove 22 communicate with each other to form a closed loop. After the motor rotates 180° each time, there is inertia. After long-term repeated movement, the accuracy will be reduced. The arc-shaped groove 21 and the straight groove 22 are both opened on a quarter of the circular ring of the rotating ring, and the arc-shaped groove 21 and the straight groove 22 are staggered. By opening the arc-shaped groove 21 and the straight groove 22 on the rotating ring to form a closed loop, the retaining ring part 3 is driven to rotate precisely through the guide rod, replacing the traditional servo-driven indexing disc. This design eliminates the electromagnetic interference risk of the servo encoder, ensures the positioning accuracy and stability during electrode switching, and avoids the positioning drift caused by signal distortion. The arc-shaped groove 21 and the straight groove 22 are both opened on a quarter of the circular ring of the rotating ring and are staggered, and such a design helps to reduce the accuracy reduction caused by inertia under the influence of the inertia after the motor rotates 180° each time.

[0030] Continuing with the above embodiments, in order to enhance the stability and wear resistance of the unbiased switching component, in one embodiment, the support portion 1 includes a support sleeve 11 and an open snap ring 12 connected to the support sleeve 11. The support sleeve 11 is located at the center of the ring of the rotating ring, and the ring body of the rotating ring is located within the open snap ring 12. The support sleeve 11 is connected to the top wall of the ring body of the rotating ring through a first connecting rod 5. The ring body of the rotating ring and the first connecting rod 5 can penetrate through the open snap ring 12. The retaining ring portion 3 is rotatably arranged within the open snap ring 12, and the retaining ring portion 3 is an open rotating block. The first connecting rod 5 can penetrate through the open rotating block and the open snap ring 12. The connecting portion 4 is a second connecting rod, and the second connecting rod is arranged at the end of the open rotating block far from the opening. The split electrode head of the composite electrode is arranged on the second connecting rod. The support sleeve 11 and the open snap ring 12 are welded into a stable framework, providing a solid support for the entire device and enhancing the stability of the overall structure. The opening width of the open rotating block is equal to the opening width of the open snap ring 12, avoiding interference. At the same time, the design of the guide block 6 (cylindrical, with a diameter equal to the groove width) reduces local stress, increases the service life, and forms a rigid lock, suppressing the micro-displacement caused by welding impact.

[0031] To avoid switching failure caused by wear and excessive clearance between the arc-shaped groove 21 and the straight groove 22 and the guide block 6 resulting in vibration, in one embodiment, the opening width of the open rotating block is equal to the opening width of the open snap ring 12. A guide block 6 is vertically arranged on the inner side wall of the opening of the open rotating block. The guide block 6 is located within the closed loop formed by the arc-shaped groove 21 and the straight groove 22. The guide block 6 is cylindrical, and the diameter of the guide block 6, the width of the arc-shaped groove 21, and the width of the straight groove 22 are the same. The guide block 6 is designed to have the same width as the arc-shaped groove 21 and the straight groove 22. The cylindrical guide block 6 has a diameter equal to the groove width, and the surface contact reduces local stress and increases the service life. After the guide block 6 is inserted into the straight groove 22, a rigid lock is formed, suppressing the micro-displacement caused by welding impact.

[0032] It is worth mentioning that usually, the electrode head of stud welding is heavier than that of spot welding. Due to the different weights at both ends of stud welding and spot welding, during the welding process, the weight difference between the electrode heads of stud welding and spot welding may cause eccentric vibration of the rotating body. Moreover, since the welding surface of the anti-collision reinforcement beam is a complex surface during welding, it is very easy to result in insufficient accessibility of the complex surface solder joints. To solve this problem, in one embodiment, a U-shaped support frame 7 is arranged at the end of the open rotating block close to the opening. The two vertical rods of the U-shaped support frame 7 are respectively connected to the side walls on both sides of the opening of the open rotating block. A third connecting rod 8 is connected to the center of the crossbar of the U-shaped support frame 7. The spot welding electrode head of the composite electrode is arranged on the second connecting rod, and the stud welding electrode head of the composite electrode is arranged on the third connecting rod 8, as Figure 3As shown in the figure, first, the weight of the opening part of the opening rotating block is small. Due to the absence at the opening, it is necessary to ensure that the first connecting rod 5 passes through the opening without causing interference. Therefore, the second connecting rod is installed with a spot welding electrode head, and the third connecting rod 8 is installed with a stud welding electrode head to cooperate with the U-shaped support frame 7 to balance the weight difference, realizing a weight balance design for the spot welding electrode head and the stud welding electrode head, reducing the vibration amplitude. Moreover, the vertical rod of the U-shaped support frame 7 can avoid the bent area of the anti-collision beam during rotation, adapting to the special-shaped cross-section.

[0033] The working process of the present invention:

[0034] First, the specific movement process of the deviation-free switching component is as follows: The spot welding electrode head is located at the end of the second connecting rod and in the working position. The guide block 6 is at the end of the straight groove 22, and the rotating ring is stationary. The stud welding electrode head of the U-shaped support frame 7 and the end of the third connecting rod 8 are in the non-working position, without interference with the bent area of the anti-collision beam. The motor starts, and the driving member 9 drives the rotating ring to rotate through the first connecting rod 5. The guide block 6 enters the arc groove 21. The arc groove 21 of the rotating ring contacts the guide block 6, and the guide block 6 slides along the arc groove 21, driving the opening rotating block to rotate around the axis of the support sleeve 11. When the guide block 6 slides from the starting end to the end (90° arc length) of the arc groove 21, the opening rotating block completes a 180° rotation, and the stud welding electrode head switches to the working position, and the spot welding electrode head exits. When the vertical rod of the U-shaped support frame 7 rotates with the opening rotating block, it avoids the bent structure of the anti-collision beam to ensure the accessibility of the welding point. The rotating ring continues to rotate to the straight groove 22 section, and the guide block 6 enters the straight groove 22. The vibration displacement is suppressed through rigid contact. The straight section of the straight groove 22 restricts the circumferential movement of the guide block 6 to ensure the fixed position of the electrode head and avoid the micro-displacement caused by the welding impact. The motor continues to rotate forward, and the guide block 6 enters the next arc groove 21 from the straight groove 22, driving the opening rotating block to rotate reversely by 180°, and the spot welding electrode head switches to the working position again;

[0035] After the welding device is started, the control system instructs the motor to drive the rotating ring part 2 of the non-deviation switching component to rotate according to the process requirements. The arc groove 21 and the straight groove 22 closed-loop track on the rotating ring drive the open retaining ring part 3 to work together through the rigid guide rod, so that the spot welding electrode head connected to the retaining ring part 3 and the stud welding electrode head complete 180° precise switching. During spot welding, the low-impedance conductive circuit provides constant current, and the double-acting cylinder applies constant pressure to form a molten core; during stud welding, the high-frequency inverter power supply outputs instantaneous high current, and the servo pressure system dynamically pressurizes to achieve welding, through the U-shaped support frame 7 and the third connecting rod 8 The counterweight design balances the weight difference of the electrode head, combines the vertical compact layout of the rotating ring and the retaining ring part 3, and utilizes the rigid guidance of the closed-loop groove in the mechanical linkage to eliminate servo signal interference and the risk of air pressure leakage. At the same time, the rigid frame of the supporting sleeve 11 and the open retaining ring 12 suppresses vibration transmission, and the internal circulation water cooling of the cooling system maintains electrode temperature control. The device realizes high-precision electrode switching, dynamic pressure matching and complex surface accessibility in a narrow space through purely mechanical trajectory control and structural optimization, effectively solving the problem of welding quality fluctuation caused by traditional indexing plate positioning drift, spatial interference and vibration.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An integrated welding device based on a composite electrode, characterized in that It includes a control system, a composite electrode, a conductive component, a pressure mechanism, and a deviation-free switching component that are respectively communicatively connected to the control system. The split electrode head of the composite electrode is disposed on the deviation-free switching component, and the deviation-free switching component is used to switch the split electrode head of the composite electrode. The deviation-free switching component includes a support portion, a rotating ring portion rotatably disposed on the support portion, a retaining ring portion rotatably disposed on the support portion, and a connecting portion disposed on the retaining ring portion. The connecting portion is used to connect the split electrode head of the composite electrode. The rotating ring portion is perpendicular to the retaining ring portion with an opening. An arc-shaped groove and a straight groove are formed on the rotating ring portion, and the arc-shaped groove and the straight groove communicate to form a closed loop. The retaining ring portion with an opening is connected to the rotating ring portion through a guide rod. The guide rod is located within the closed loop formed by the communication of the arc-shaped groove and the straight groove. The rotating ring portion drives the guide rod to rotate through the arc-shaped groove, the guide rod drives the retaining ring portion to rotate, and the retaining ring portion drives the connecting portion to reverse, so that the position of the split electrode head of the composite electrode is switched.

2. The integrated welding device based on a composite electrode according to claim 1, characterized in that, The rotating ring portion is a rotating ring, and the cross-section of the rotating ring is circular. The arc-shaped groove and the straight groove are formed on the rotating ring, and the arc-shaped groove and the straight groove communicate to form a closed loop.

3. The integrated welding device based on a composite electrode according to claim 2, characterized in that, Both the arc-shaped groove and the straight groove are formed on a quarter of the circular ring of the rotating ring, and the arc-shaped groove and the straight groove are staggered.

4. The integrated welding device based on a composite electrode according to claim 2, wherein, The support portion includes a support sleeve and an open snap ring connected to the support sleeve. The support sleeve is located at the center of the ring of the rotating ring. The ring body of the rotating ring is located within the open snap ring. The support sleeve is connected to the top wall of the ring body of the rotating ring through a first connecting rod. The ring body of the rotating ring and the first connecting rod can penetrate through the open snap ring.

5. The integrated welding device based on a composite electrode according to claim 4, wherein The retaining ring portion is rotatably disposed within the open snap ring, and the retaining ring portion is an open rotating block. The first connecting rod can penetrate through the open rotating block and the open snap ring. The connecting portion is a second connecting rod, and the second connecting rod is disposed at the end of the open rotating block away from the opening. The split electrode head of the composite electrode is disposed on the second connecting rod.

6. The integrated welding device based on a composite electrode according to claim 5, characterized in that, The opening width of the open rotating block is equal to the opening width of the open snap ring.

7. An integrated welding device based on a composite electrode according to claim 5, characterized in that, A guide block is vertically disposed on the inner side wall of the opening of the open rotating block, and the guide block is located within the closed loop formed by the arc-shaped groove and the straight groove.

8. The integrated welding device based on a composite electrode according to claim 7, wherein The guide block is cylindrical, and the diameter of the guide block, the width of the arc-shaped groove, and the width of the straight groove are the same.

9. An integrated welding device based on a composite electrode according to claim 5, wherein, A U-shaped support frame is disposed at the end of the open rotating block close to the opening. The two vertical rods of the U-shaped support frame are respectively connected to the side walls on both sides of the opening of the open rotating block. A third connecting rod is connected to the center of the cross bar of the U-shaped support frame. The spot welding electrode head of the composite electrode is disposed on the second connecting rod, and the stud welding electrode head of the composite electrode is disposed on the third connecting rod.

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