A commutator and wire end continuous welding apparatus

Abstract

The application belongs to the technical field of component welding, and particularly relates to a motor commutator and wire head continuous welding device, which comprises a base, a stand, a top plate and a welding tool, the stand is fixedly connected to the top of the base, the top plate is fixedly connected to the top of the stand, the bottom of the top plate is provided with a reciprocating lifting mechanism, the welding tool is arranged at the bottom of the reciprocating lifting mechanism, the top of one side of the base close to the welding tool is fixedly connected with a processing groove, and the top of the other side of the base is fixedly connected with a mounting groove. In the application, the push roller, the pull roller, the first travel switch and the second travel switch are cooperatively matched to ensure the automatic process of feeding, clamping, processing and discharging of the workpiece, significantly improve the production efficiency, reduce manual intervention, realize the automatic sorting and circulation of the workpiece after welding through the integrated design of the conveying groove and the discharging slope, facilitate the connection of the subsequent quality inspection link, and optimize the production process.

Description

Technical Field

[0001] This invention relates to the field of component welding technology, and in particular to a continuous welding device for motor commutators and wire ends. Background Technology

[0002] In the field of motor commutator manufacturing, a reliable connection between the commutator and the armature winding is a key factor in ensuring stable motor performance. Traditional welding processes often employ manual-assisted positioning or semi-automatic equipment to continuously weld wire ends to the commutator, resulting in problems such as low efficiency, poor precision, and insufficient consistency.

[0003] A search revealed that Chinese patent application CN105904130B discloses a continuous welding device for motor commutators, which enables welding of the commutator's connecting feet and the rotor winding leads wound around the connecting feet, effectively removing varnish, forming conductivity, and enhancing connection stability and reliability.

[0004] The above-mentioned devices still suffer from problems of process decomposition and low automation in application, making it difficult to meet the needs of high-precision and large-scale production. There is an urgent need to design a continuous welding device for motor commutators and wire ends to solve the above problems. Summary of the Invention

[0005] To address the technical problems of low process discreteness and automation in existing technologies, this invention proposes a continuous welding device for motor commutators and wire ends.

[0006] This invention proposes a continuous welding device for motor commutators and wire ends, comprising a base, a column, a top plate, and a welding fixture. The column is fixedly connected to the top of the base, and the top plate is fixedly connected to the top of the column. A reciprocating lifting mechanism is provided at the bottom of the top plate, and the welding fixture is located at the bottom of the reciprocating lifting mechanism. A bracket is fixedly connected to the top of the base. A processing groove is fixedly connected to the top of the bracket on the side near the welding fixture, and an installation groove is fixedly connected to the top of the other side of the bracket. A conveying groove is fixedly connected between the processing groove and the installation groove. A clamping drive mechanism is provided at the top of the installation groove, and a top coaxial with the output shaft of the servo motor is provided at the top of the processing groove. The conveyor trough has a fixed feeding ramp on one side and a limit frame on the side of the conveyor trough near the feeding ramp. Slider blocks are slidably connected to the inner walls on both sides of the limit frame. A push roller is rotatably connected between two sliders. A connecting piece is fixedly connected to the top of the slider away from the welding fixture. A pull roller parallel to the push roller is rotatably connected to the end of the connecting piece. A push rod motor is provided on one side of the conveyor trough. The telescopic end of the push rod motor is fixedly connected to one of the sliders. A first limit switch adapted to the push roller is fixedly connected to the top of the limit frame. A second limit switch adapted to the pull roller is fixedly connected to the top of the side of the conveyor trough away from the limit frame.

[0007] Preferably, the reciprocating lifting mechanism includes a first cylinder and a lifting platform. The first cylinder is fixedly connected to the bottom of the top plate, the lifting platform is fixedly connected to the telescopic end of the first cylinder, and the welding fixture is fixedly connected to the bottom of the lifting platform.

[0008] Preferably, a guide rod is fixedly connected to the top of the lifting platform, and a sleeve is fixedly connected to the bottom of the top plate, with the top end of the guide rod slidably connected to the inside of the sleeve.

[0009] Preferably, the clamping drive mechanism includes a second cylinder, a servo motor, and a pneumatic clamp. The second cylinder is fixedly connected to the top of the mounting slot, the servo motor is fixedly connected to the telescopic end of the second cylinder, and the pneumatic clamp is fixedly connected to the output end of the servo motor.

[0010] Preferably, the inner walls on both sides of the limiting frame are provided with sliding grooves, and the two sliders are slidably connected to the inside of the two sliding grooves respectively.

[0011] Preferably, a support frame is fixedly connected to the top of one side of the base, and a mounting sleeve is fixedly connected to the top of the support frame, with the push rod motor fixedly connected inside the mounting sleeve.

[0012] Preferably, a pin seat is fixedly connected to the top of the base near the welding fixture, and the pin is rotatably connected to the top of the pin seat near the machining groove.

[0013] Preferably, a threaded sleeve is fixedly connected to one side of the lifting platform, a limit block is fixedly connected to the outer wall of the threaded sleeve, a lifting frame is slidably connected to one side of the threaded sleeve through the limit block, an adjusting motor is fixedly connected to the top inner wall of the lifting frame, a screw is driven to the output end of the adjusting motor, the screw is threaded to the inside of the threaded sleeve, the bottom end of the screw is rotatably connected to the bottom inner wall of the lifting frame, and a follower pressure tool adapted to the welding tool is fixedly connected to the outer wall of the bottom of the lifting frame.

[0014] Preferably, an intercepting plate is fixedly connected to the side of the discharge slope away from the conveying trough, and a buffer pad is fixedly connected to the side of the intercepting plate close to the conveying trough.

[0015] Preferably, a horizontally sliding slide is inserted into the top of the side of the discharge slope away from the conveying trough. A speed reduction plate is fixedly connected to the top of the slide. The speed reduction plate is made of foam. A positioning magnetic strip is embedded in the slope of the discharge slope and fits against the side of the slide. The slide is made of steel. A pull rod is fixedly connected to the side of the slide away from the positioning magnetic strip. A roller groove is opened on the top of the base. Rollers are rotatably connected inside the roller groove. The rollers are located below the pull rod, and the outer wall of the rollers is tangent to the bottom surface of the slide.

[0016] Compared with the prior art, the present invention provides a continuous welding device for motor commutators and wire ends, which has the following beneficial effects:

[0017] 1. This continuous welding equipment for motor commutators and wire ends, through the coordinated operation of push rollers, pull rollers, first limit switches and second limit switches, ensures the precise completion of the automated process from workpiece loading, clamping, processing to unloading, significantly improving production efficiency and reducing manual intervention. Through the integrated design of conveyor trough and unloading slope, it realizes the automatic sorting and transfer of welded workpieces, which facilitates the connection with subsequent quality inspection links and optimizes the production process.

[0018] 2. This continuous welding equipment for motor commutators and wire ends, by setting up a follower pressure fixture, a lifting frame, an adjusting motor, and a screw, allows the follower pressure fixture to rise and fall synchronously with the welding fixture. During the welding process, the workpiece is pressed down simultaneously as the welding fixture descends, providing additional clamping force for welding, counteracting workpiece vibration, and improving welding consistency. The height of the follower pressure fixture can be adjusted by adjusting the screw driven by the adjusting motor, which in turn drives the lifting frame to move up and down through the threaded sleeve, thus adapting to workpieces of different specifications and enhancing the equipment's versatility. During the movement of the lifting frame, it cooperates with the limit block to prevent movement deviation.

[0019] 3. This continuous welding equipment for motor commutators and wire ends, by setting up a feeding slope, a sliding plate, a positioning magnetic strip, and a roller groove, allows the workpiece to roll down to the bottom of the feeding slope during feeding. The downward impact energy of the workpiece is absorbed by the deceleration plate, allowing the workpiece to be stably stopped above the deceleration plate. The sliding plate is pulled along the roller groove by a pull rod, and the roller is supported at the bottom of the sliding plate, so that the sliding plate, the deceleration plate at the top, and the workpiece reach the top of the roller groove. The design of the roller groove makes full use of the device layout, provides convenience for the quality inspection process, and facilitates the removal of finished workpieces. After quality inspection and material removal are completed, the sliding plate is reset by the pull rod, and the positioning magnetic strip is attracted to the sliding plate, playing an auxiliary positioning role. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a continuous welding device for motor commutators and wire ends proposed in this invention;

[0021] Figure 2 This is a structural schematic diagram from another perspective of a continuous welding device for motor commutators and wire ends proposed in this invention.

[0022] Figure 3 This is a schematic diagram of the mounting groove, conveying groove, and processing groove of a continuous welding equipment for motor commutators and wire ends proposed in this invention.

[0023] Figure 4 This is a schematic diagram of the push roller and pull roller structure of a continuous welding device for motor commutators and wire ends proposed in this invention.

[0024] Figure 5 This is a schematic diagram of the unloading slope structure of a continuous welding device for motor commutators and wire ends proposed in this invention;

[0025] Figure 6 This is a schematic diagram of the first and second limit switches of a continuous welding device for a motor commutator and wire ends proposed in this invention.

[0026] Figure 7 This is a front view of a continuous welding device for motor commutators and wire ends proposed in this invention.

[0027] Figure 8 This is a top view of a continuous welding device for motor commutators and wire ends proposed in this invention;

[0028] Figure 9 This is a left view of a continuous welding device for motor commutators and wire ends proposed in this invention.

[0029] In the diagram: 1. Base; 2. Column; 3. Top plate; 4. First cylinder; 5. Lifting platform; 6. Welding fixture; 7. Limit block; 8. Lifting frame; 9. Adjusting motor; 10. Follow-up pressure fixture; 11. Bracket; 12. Mounting slot; 13. Conveying slot; 14. Machining slot; 15. Ejector pin seat; 16. Ejector pin; 17. Second cylinder; 18. Servo motor; 19. Pneumatic clamp; 20. Limit frame; 21. Push roller; 22. Pull roller; 23. 24. Connecting plate; 25. Push rod motor; 26. First limit switch; 27. Second limit switch; 28. Interceptor plate; 29. ​​Buffer pad; 30. Slide rail; 31. Stand; 32. Mounting sleeve; 33. Discharge slope; 34. Baffle; 35. Slide plate; 36. Positioning magnetic strip; 37. Speed ​​reducer; 38. Pull rod; 39. Threaded sleeve; 40. Screw; 41. Sleeve; 42. Guide rod; 43. Roller groove; 44. Roller. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Reference Figures 1-9A continuous welding device for motor commutators and wire ends includes a base 1, a column 2, a top plate 3, and a welding fixture 6. The column 2 is fixedly connected to the top of the base 1, and the top plate 3 is fixedly connected to the top of the column 2. A reciprocating lifting mechanism is provided at the bottom of the top plate 3, and the welding fixture 6 is provided at the bottom of the reciprocating lifting mechanism. A bracket 11 is fixedly connected to the top of the base 1. A processing groove 14 is fixedly connected to the top of the bracket 11 on the side near the welding fixture 6, and an installation groove 12 is fixedly connected to the top of the other side of the bracket 11. A conveying groove 13 is fixedly connected between the processing groove 14 and the installation groove 12. A clamping drive mechanism is provided at the top of the installation groove 12, and a pin 16 coaxial with the output shaft of a servo motor 18 is provided at the top of the processing groove 14. One side of the conveying groove 13... A feeding ramp 33 is fixedly connected to the conveying trough 13. A limit frame 20 is fixedly connected to the side of the conveying trough 13 near the feeding ramp 33. Sliding blocks 30 are slidably connected to the inner walls on both sides of the limit frame 20. A push roller 21 is rotatably connected between two sliding blocks 30. A connecting piece 23 is fixedly connected to the top of one of the sliding blocks 30 away from the welding fixture 6. A pull roller 22 parallel to the push roller 21 is rotatably connected to the end of the connecting piece 23. A push rod motor 24 is provided on one side of the conveying trough 13. The telescopic end of the push rod motor 24 is fixedly connected to one of the sliding blocks 30. A first limit switch 25 adapted to the push roller 21 is fixedly connected to the top of the limit frame 20. A second limit switch 26 adapted to the pull roller 22 is fixedly connected to the top of the side of the conveying trough 13 away from the limit frame 20.

[0032] In use, the push roller 21 is initially positioned at one end of the conveying trough 13 near the unloading slope 33. During loading, the commutator workpiece is placed between the push roller 21 and the pull roller 22. The push rod motor 24 pushes the push roller 21 out through the slider 30 until the pull roller 22 triggers the second limit switch 26. The generated electrical signal controls the clamping drive mechanism to clamp the workpiece and push it to the bottom of the welding fixture 6 in the processing trough 14. The workpiece is positioned in conjunction with the ejector pin 16. Then, the clamping drive mechanism cooperates with the reciprocating lifting mechanism to make the workpiece rotate indexed. The welding fixture 6 reciprocates and lifts, welding during descent, until all weld points are completed. The clamping drive mechanism drives the workpiece back and releases it. The push rod motor 24 pulls back the slider 30, which drives the push roller 21, pull roller 22 and the workpiece between them to move together to the top of the unloading slope 33 until the push roller 21 triggers the first limit switch 25. After the workpiece reaches the top of the unloading slope 33, it rolls down the slope surface of the unloading slope 33 to the bottom of the slope to facilitate the subsequent quality inspection process. After the push roller 21 triggers the first limit switch 25, the generated electrical signal controls the push rod motor 24 to drive the push roller 21 and pull roller 22 back to the initial position, thus completing the continuous welding process of a single commutator workpiece.

[0033] In this invention, the reciprocating lifting mechanism includes a first cylinder 4 and a lifting platform 5. The first cylinder 4 is fixedly connected to the bottom of the top plate 3, the lifting platform 5 is fixedly connected to the telescopic end of the first cylinder 4, and the welding tool 6 is fixedly connected to the bottom of the lifting platform 5. The first cylinder 4 drives the lifting platform 5 to move up and down, thereby driving the welding tool 6 to complete the pressure welding action.

[0034] In this invention, a guide rod 42 is fixedly connected to the top of the lifting platform 5, and a sleeve 41 is fixedly connected to the bottom of the top plate 3. The top end of the guide rod 42 is slidably connected to the inside of the sleeve 41. When the lifting platform 5 moves up and down, the top end of the guide rod 42 slides inside the sleeve 41 to restrict the lateral displacement of the lifting platform 5, so that it only moves in the vertical direction, reduce the vibration of the welding tool 6, ensure the vertical alignment of the welding head and the workpiece, and improve the welding quality.

[0035] In this invention, the clamping drive mechanism includes a second cylinder 17, a servo motor 18, and a pneumatic clamp 19. The second cylinder 17 is fixedly connected to the top of the mounting groove 12, the servo motor 18 is fixedly connected to the telescopic end of the second cylinder 17, and the pneumatic clamp 19 is fixedly connected to the output end of the servo motor 18. The second cylinder 17 pushes the servo motor 18 and the pneumatic clamp 19 to move laterally. The pneumatic clamp 19 clamps the rotor end of the commutator workpiece and adjusts its position, so that the workpiece moves into the processing groove 14. The welding fixture 6 presses down to perform welding. The servo motor 18 drives the pneumatic clamp 19 and the commutator to rotate through the output shaft, and works with the welding fixture 6 to complete multi-angle continuous welding.

[0036] In this invention, the inner walls on both sides of the limiting frame 20 are provided with sliding grooves 29, and the two sliders 30 are respectively slidably connected to the inside of the two sliding grooves 29. The sliders 30 slide along the sliding grooves 29, and the movement trajectory of the sliders 30 is constrained by the sliding grooves 29.

[0037] In this invention, a support frame 31 is fixedly connected to the top of one side of the base 1, and an mounting sleeve 32 is fixedly connected to the top of the support frame 31. A push rod motor 24 is fixedly connected inside the mounting sleeve 32. The push rod motor 24 is fixed inside the mounting sleeve 32 at the top of the support frame 31 and drives the slider 30 to move through the telescopic end, thereby controlling the position of the push roller 21 and the pull roller 22.

[0038] In this invention, a pin seat 15 is fixedly connected to the top of the base 1 near the welding fixture 6. The pin 16 is rotatably connected to the top of the pin seat 15 near the processing groove 14. The pin 16 is fixed by the pin seat 15. The pin 16 is coaxial with the output shaft of the servo motor 18, supports the commutator and transmits rotational power.

[0039] In this invention, a threaded sleeve 39 is fixedly connected to one side of the lifting platform 5, and a limiting block 7 is fixedly connected to the outer wall of the threaded sleeve 39. A lifting frame 8 is slidably connected to one side of the threaded sleeve 39 through the limiting block 7. An adjusting motor 9 is fixedly connected to the top inner wall of the lifting frame 8. A screw 40 is driven to the output end of the adjusting motor 9. The screw 40 is threadedly connected to the inside of the threaded sleeve 39, and the bottom end of the screw 40 is rotatably connected to the bottom inner wall of the lifting frame 8. A follower pressure 10 adapted to the welding tool 6 is fixedly connected to the bottom outer wall of the lifting frame 8. The follower pressure 10 rises and falls synchronously with the welding tool 6. During the welding process when the welding tool 6 descends, it simultaneously presses the workpiece, providing additional pressing force for welding, offsetting workpiece vibration, and improving welding consistency. The adjusting motor 9 can drive the screw 40 to rotate, and the threaded sleeve 39 can drive the lifting frame 8 to move up and down, adjusting the height of the follower pressure 10 to adapt to workpieces of different specifications and enhance the versatility of the equipment. During the movement of the lifting frame 8, it cooperates with the limiting block 7 to prevent movement deviation.

[0040] In this invention, an intercepting plate 27 is fixedly connected to the side of the discharge slope 33 away from the conveying trough 13, and a buffer pad 28 is fixedly connected to the side of the intercepting plate 27 close to the conveying trough 13. The intercepting plate 27 and the buffer pad 28 are located at the end of the discharge slope 33, limiting the discharge stroke of the workpiece.

[0041] In this invention, a horizontally sliding slide plate 35 is inserted into the top of the side of the feeding slope 33 away from the conveying trough 13. A speed reduction plate 37 is fixedly connected to the top of the slide plate 35. The speed reduction plate 37 is made of foam. A positioning magnetic strip 36 is embedded in the slope of the feeding slope 33 and fits against the side of the slide plate 35. The slide plate 35 is made of steel. A pull rod 38 is fixedly connected to the side of the slide plate 35 away from the positioning magnetic strip 36. A roller groove 43 is opened on the top of the base 1. Rollers 44 are rotatably connected inside the roller groove 43. The rollers 44 are located below the pull rod 38, and the outer wall of the rollers 44 is tangent to the bottom surface of the slide plate 35. When the workpiece is unloaded, it rolls to the bottom of the unloading slope 33. The speed reduction plate 37 absorbs the downward energy of the workpiece, so that the workpiece is stably stopped above the speed reduction plate 37. The pull rod 38 pulls the slide plate 35 along the roller groove 43. The roller 44 supports the bottom of the slide plate 35, so that the slide plate 35, the speed reduction plate 37 on top, and the workpiece reach the top of the roller groove 43. The design of the roller groove 43 makes full use of the device layout, which provides convenience for the quality inspection process and facilitates the removal of finished workpieces. After the quality inspection and material removal are completed, the pull rod 38 drives the slide plate 35 to reset. The positioning magnetic strip 36 attracts the slide plate 35 to play an auxiliary positioning role.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A continuous welding device for motor commutators and wire ends, comprising a base (1), a column (2), a top plate (3), and a welding fixture (6), wherein the column (2) is fixedly connected to the top of the base (1), the top plate (3) is fixedly connected to the top of the column (2), a reciprocating lifting mechanism is provided at the bottom of the top plate (3), and the welding fixture (6) is provided at the bottom of the reciprocating lifting mechanism, characterized in that, A bracket (11) is fixedly connected to the top of the base (1). A processing groove (14) is fixedly connected to the top of the bracket (11) on the side near the welding tool (6). An installation groove (12) is fixedly connected to the top of the other side of the bracket (11). A conveying groove (13) is fixedly connected between the processing groove (14) and the installation groove (12). A clamping drive mechanism is provided on the top of the installation groove (12). A pin (16) coaxial with the output shaft of the servo motor (18) is provided on the top of the processing groove (14). A feeding slope (33) is fixedly connected to one side of the conveying groove (13). A limit frame (20) is fixedly connected to the side of the conveying groove (13) near the feeding slope (33). The inner walls on both sides of the limit frame (20) are smooth. A slider (30) is dynamically connected, and a push roller (21) is rotatably connected between the two sliders (30). A connecting piece (23) is fixedly connected to the top of one slider (30) away from the welding fixture (6). A pull roller (22) parallel to the push roller (21) is rotatably connected to the end of the connecting piece (23). A push rod motor (24) is provided on one side of the conveying trough (13). The telescopic end of the push rod motor (24) is fixedly connected to one of the sliders (30). A first limit switch (25) adapted to the push roller (21) is fixedly connected to the top of the limit frame (20). A second limit switch (26) adapted to the pull roller (22) is fixedly connected to the top of the side of the conveying trough (13) away from the limit frame (20). A baffle plate (27) is fixedly connected to the side of the discharge slope (33) away from the conveying trough (13). A buffer pad (28) is fixedly connected to the side of the baffle plate (27) close to the conveying trough (13). A sliding plate (35) that can slide laterally is inserted into the top of the side of the discharge slope (33) away from the conveying trough (13). A speed reduction plate (37) is fixedly connected to the top of the sliding plate (35). The speed reduction plate (37) is made of foam. A positioning magnetic strip (36) that fits the side of the sliding plate (35) is embedded in the slope of the discharge slope (33). The sliding plate (35) is made of steel. A pull rod (38) is fixedly connected to the side of the sliding plate (35) away from the positioning magnetic strip (36). A roller groove (43) is opened on the top of the base (1). Rollers (44) that are evenly distributed are rotatably connected inside the roller groove (43). The rollers (44) are located below the pull rod (38), and the outer wall of the rollers (44) is tangent to the bottom surface of the sliding plate (35).

2. The continuous welding equipment for motor commutators and wire ends according to claim 1, characterized in that, The reciprocating lifting mechanism includes a first cylinder (4) and a lifting platform (5). The first cylinder (4) is fixedly connected to the bottom of the top plate (3), the lifting platform (5) is fixedly connected to the telescopic end of the first cylinder (4), and the welding tool (6) is fixedly connected to the bottom of the lifting platform (5).

3. The continuous welding equipment for motor commutators and wire ends according to claim 2, characterized in that, The top of the lifting platform (5) is fixedly connected to a guide rod (42), and the bottom of the top plate (3) is fixedly connected to a sleeve (41). The top end of the guide rod (42) is slidably connected to the inside of the sleeve (41).

4. The continuous welding equipment for motor commutators and wire ends according to claim 1, characterized in that, The clamping drive mechanism includes a second cylinder (17), a servo motor (18), and a pneumatic clamp (19). The second cylinder (17) is fixedly connected to the top of the mounting slot (12), the servo motor (18) is fixedly connected to the extension end of the second cylinder (17), and the pneumatic clamp (19) is fixedly connected to the output end of the servo motor (18).

5. The continuous welding equipment for motor commutators and wire ends according to claim 1, characterized in that, The inner walls on both sides of the limiting frame (20) are provided with sliding grooves (29), and the two sliders (30) are slidably connected to the inside of the two sliding grooves (29).

6. The continuous welding equipment for motor commutators and wire ends according to claim 1, characterized in that, A support frame (31) is fixedly connected to the top of one side of the base (1), and an mounting sleeve (32) is fixedly connected to the top of the support frame (31). The push rod motor (24) is fixedly connected inside the mounting sleeve (32).

7. The continuous welding equipment for motor commutators and wire ends according to claim 1, characterized in that, The base (1) is fixedly connected to the top of the side of the welding tool (6) with a pin seat (15), and the pin (16) is rotatably connected to the top of the pin seat (15) on the side of the side of the processing groove (14).

8. The continuous welding equipment for motor commutators and wire ends according to claim 2, characterized in that, A threaded sleeve (39) is fixedly connected to one side of the lifting platform (5). A limit block (7) is fixedly connected to the outer wall of the threaded sleeve (39). A lifting frame (8) is slidably connected to one side of the threaded sleeve (39) through the limit block (7). An adjusting motor (9) is fixedly connected to the top inner wall of the lifting frame (8). A screw (40) is driven to the output end of the adjusting motor (9). The screw (40) is threaded to the inside of the threaded sleeve (39). The bottom end of the screw (40) is rotatably connected to the bottom inner wall of the lifting frame (8). A follower press (10) adapted to the welding tool (6) is fixedly connected to the outer wall of the bottom of the lifting frame (8).

Images