Welding system for assembling and processing rear axle steel plate spring

Abstract

The invention relates to the technical field of steel plate spring welding, in particular to a welding system for rear axle steel plate spring assembling and machining, and solves the problems that when a rear axle steel plate spring is welded, the rear axle steel plate spring is often difficult to adapt to different steel plate spring sizes, and after a lifting lug of the steel plate spring falls off and is damaged, elasticity qualification detection is usually not carried out. The welding device comprises a supporting mechanism, a lifting structure is arranged in the supporting mechanism, and adjusting structures are arranged on the two sides of the supporting mechanism. The output end is driven by the hydraulic cylinder to be pushed outwards, so that the output end pushes the lifting table to ascend, then the steel plate spring is pushed by the lifting table and the pushing plate to move upwards till the top end surface of the steel plate spring is attached to the surface of the anti-abrasion pad, and at the moment, the steel plate spring is flattened at the bottom end of the anti-abrasion pad due to the elasticity of the steel plate spring; and at the moment, the steel plate spring is fixed under the pushing force of the pushing plate, so that the situation that the steel plate spring shakes during welding is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of leaf spring welding, and specifically relates to a welding system for assembling and processing rear axle leaf springs. Background Technique

[0002] Leaf spring: It is composed of multiple steel plates with unequal lengths and unequal curvatures stacked together. After installation, both ends bend upward naturally. When the impact force from the road surface is transmitted to the wheels, the steel plates deform, playing a role in buffering and damping. When longitudinally arranged, it also has the function of guiding and transmitting force. Most non-independent suspensions use leaf springs as elastic elements, which can eliminate the guiding device and shock absorber, and the structure is simple; When the leaf spring is damaged, the lugs on both sides are prone to falling off, resulting in the need for re-welding and processing for fixation.

[0003] When the existing rear axle leaf springs are welded, it often occurs that it is difficult to adapt to different leaf spring sizes, and after the lugs of the leaf spring fall off and are damaged, elastic qualification tests are usually not carried out, resulting in defective welded products; Therefore, it does not meet the existing requirements, and for this reason, we propose a welding system for assembling and processing rear axle leaf springs. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding system for assembling and processing rear axle leaf springs to solve the problems mentioned in the above background technique, such as it is often difficult to adapt to different leaf spring sizes when welding rear axle leaf springs, and after the lugs of the leaf spring fall off and are damaged, elastic qualification tests are usually not carried out, resulting in defective welded products.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A welding system for assembling and processing rear axle leaf springs, including a support mechanism, a lifting structure is arranged inside the support mechanism, adjustment structures are arranged on both sides of the support mechanism, clamping structures are arranged on the surfaces of the adjustment structures, a leaf spring is sleeved on the surface of the lifting structure, and lugs are clamped on the surfaces of the clamping structures; The lifting structure includes a hydraulic cylinder, a lifting platform, an L-shaped connecting rod, a pushing platform and a plug pin. The hydraulic cylinder is movably installed inside the support mechanism, the output end of the hydraulic cylinder is fixedly connected to the lifting platform, L-shaped connecting rods are fixedly installed on both sides of the lifting platform, pushing platforms are fixedly installed at the tops of the L-shaped connecting rods, a plug pin is fixedly installed at the top of the lifting platform, the plug pin is divided into three sections, and the diameters of the three sections of the plug pin gradually increase from top to bottom.

[0006] Preferably, the lifting structure further includes spring grooves, a pushing plate, and compression springs. Two spring grooves are provided on the surface of the pushing platform. The pushing plates are slidably installed inside the spring grooves, and the compression springs are movably installed between the pushing plates and the inside of the spring grooves. One end of each compression spring is connected to the inner wall of the spring groove, and the other end of each compression spring is connected to the pushing plate.

[0007] Preferably, the support mechanism includes a base, a rear support plate, a top plate, an ejection hole, a collision prevention plate, and an anti-wear pad. The rear support plate is fixedly installed at the position near the rear side of the top of the base. The top plate is fixedly installed at the top of the rear support plate. Collision prevention plates are fixedly installed on both sides of the bottom end of the top plate. Anti-wear pads are provided on the bottom surface of each collision prevention plate. An ejection hole is provided at the center of the surface of the top plate.

[0008] Preferably, the support mechanism further includes a rectifying platform, a rectifying groove, a movable rod, a rectifying plate, and a compression spring. Two rectifying platforms are fixedly installed on the surface of the rear support plate. Rectifying grooves are provided on the surface of each rectifying platform. The movable rods are slidably installed inside the rectifying grooves, and the compression springs are movably installed between the movable rods and the inside of the rectifying grooves. One end of each compression spring is connected to the inner wall of the rectifying groove, and the other end of each compression spring is connected to the movable rod. The outer end of each movable rod is fixedly installed with a rectifying plate.

[0009] Preferably, the adjusting structure includes a fixed platform, a support frame, a connecting plate, a lead screw, a lead screw movable sleeve, an electric push rod, a base, and a servo motor. Bases are fixedly installed on both sides of the base. Four support frames are fixedly installed at the top end near the outside of each base. The fixed platform is fixedly installed at the top of the support frame. A servo motor is provided inside the fixed platform. The connecting plate is movably installed at the top of the servo motor. The output end of the servo motor is connected to the lead screw through a coupling. The lead screw penetrates through the connecting plate and extends to the upper position of the connecting plate. The lead screw movable sleeve is movably installed on the outer surface of the lead screw. Electric push rods are fixedly installed on one side of the lead screw movable sleeve close to the support mechanism.

[0010] Preferably, the clamping structure includes a fixing plate, a cylindrical platform, a telescopic rod, a positioning plate, a telescopic groove, and a pushing spring. The output end of the electric push rod is fixedly connected to the fixing plate. Cylindrical platforms are fixedly installed on both sides of the fixing plate. Telescopic grooves are provided inside each cylindrical platform. The telescopic rods are slidably installed inside the telescopic grooves. The positioning plates are fixedly installed at the outer ends of the telescopic rods. The pushing springs are movably installed between the telescopic rods and the inside of the telescopic grooves. One end of each pushing spring is connected to the inner wall of the telescopic groove, and the other end of each pushing spring is connected to the telescopic rod.

[0011] Preferably, the clamping structure further includes a movable clamping plate, an L-shaped clamping block, a T-shaped sliding groove and an adjusting spring. Two T-shaped sliding grooves are provided at the bottom end of the fixed plate. Movable clamping plates are slidably installed inside the T-shaped sliding grooves. Adjusting springs are movably installed between the movable clamping plates and the inside of the T-shaped sliding grooves. One end of each adjusting spring is connected to the inner wall of the T-shaped sliding groove, and the other end of each adjusting spring is connected to the movable clamping plate. L-shaped clamping blocks are fixedly installed at the bottom ends of the movable clamping plates, and inclined surfaces are provided on the bottom surfaces of the L-shaped clamping blocks.

[0012] Preferably, the lug is movably clamped at the position between the two movable clamping plates, and the bottom surface of the positioning plate is attached to the surface of the lug.

[0013] Preferably, insertion holes are provided on the surface of the leaf spring, the insertion pins are movably inserted into the insertion holes, and the bottom ends of the leaf springs are attached to the top surface of the push plate.

[0014] Preferably, a plurality of support rods are fixedly installed at the bottom ends of the base and the pedestal.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the cooperation of the hydraulic cylinder and the top plate, when the device is in use, the output end of the hydraulic cylinder can be driven to push outwards, so as to push the lifting platform to rise, and then the leaf spring is pushed upwards through the lifting platform and the push plate until the top surface of the leaf spring is attached to the surface of the anti-wear pad. At this time, the leaf spring will be flattened at the bottom position of the anti-wear pad due to its own elasticity. At this time, the leaf spring will be fixed by the thrust of the push plate, thus avoiding the situation of shaking during the welding of the leaf spring, and by pushing the leaf spring with the hydraulic cylinder, the elasticity of the leaf spring can be detected before welding to avoid welding defective leaf springs. 2. Through the cooperation of the adjusting structure and the clamping structure, when the device is in use, the servo motor can be driven to rotate the lead screw, so as to adjust the height position of the lead screw movable sleeve on the surface of the lead screw, and then adjust the height position of the electric push rod. Subsequently, the fixed plate is driven to push outwards by the electric push rod, so as to adjust the horizontal position of the lug, so that the lug can be aligned with both ends of the flattened leaf spring, facilitating the welding of leaf springs and lugs of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the whole of the present invention; Figure 2 For the present invention Figure 1 Partial structural schematic diagram of part A in; Figure 3 It is a front cross-sectional view of the whole of the present invention; Figure 4 It is a sectional side view of the whole of the present invention; Figure 5 It is a sectional side view of the position of the clamping structure of the present invention; Figure 6 For the present invention Figure 3 A partial structural schematic diagram of part B in it; Figure 7 For the present invention Figure 3 A partial structural schematic diagram of part C in it; Figure 8 For the present invention Figure 5 A partial structural schematic diagram of part D in it.

[0017] In the figure: 1. Support mechanism; 101. Base; 102. Rear support plate; 103. Top plate; 104. Ejection hole; 105. Anti-collision plate; 106. Anti-wear pad; 107. Deviation-correcting table; 108. Deviation-correcting groove; 109. Movable rod; 110. Deviation-correcting plate; 111. Compression spring; 2. Lifting structure; 201. Hydraulic cylinder; 202. Lifting platform; 203. L-shaped connecting rod; 204. Pushing platform; 205. Plug pin; 206. Spring groove; 207. Pushing plate; 208. Extrusion spring; 3. Adjusting structure; 301. Fixed table; 302. Support frame; 303. Connecting plate; 304. Lead screw; 305. Lead screw movable sleeve; 306. Electric push rod; 307. Base; 308. Servo motor; 4. Clamping structure; 401. Fixed plate; 402. Movable clamping plate; 403. Cylindrical table; 404. Expansion rod; 405. Positioning plate; 406. L-shaped clamping block; 407. Expansion slot; 408. Pushing spring; 409. T-shaped sliding groove; 410. Adjusting spring; 5. Leaf spring; 6. Ear. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Please refer to Figures 1 to 8 , an embodiment provided by the present invention: A welding system for the assembly and processing of rear axle leaf springs includes a support mechanism 1. A lifting structure 2 is arranged inside the support mechanism 1. Adjusting structures 3 are arranged on both sides of the support mechanism 1. Clamping structures 4 are arranged on the surfaces of the adjusting structures 3. A leaf spring 5 is sleeved on the surface of the lifting structure 2. Ears 6 are clamped on the surfaces of the clamping structures 4; The lifting structure 2 includes a hydraulic cylinder 201, a lifting platform 202, an L-shaped connecting rod 203, a pushing platform 204, and a plug pin 205. The hydraulic cylinder 201 is movably installed inside the support mechanism 1. The output end of the hydraulic cylinder 201 is fixedly connected to the lifting platform 202. L-shaped connecting rods 203 are fixedly installed on both sides of the lifting platform 202. Pushing platforms 204 are fixedly installed at the tops of the L-shaped connecting rods 203. A plug pin 205 is fixedly installed at the top of the lifting platform 202. The plug pin 205 is divided into three sections, and the diameters of the three sections of the plug pin 205 gradually increase from top to bottom.

[0020] The lifting structure 2 further includes spring grooves 206, pushing plates 207, and compression springs 208. Two spring grooves 206 are provided on the surface of each pushing platform 204. Pushing plates 207 are slidably installed inside the spring grooves 206. Compression springs 208 are movably installed between the pushing plates 207 and the interiors of the spring grooves 206. One end of each compression spring 208 is connected to the inner wall of the spring groove 206, and the other end of each compression spring 208 is connected to the pushing plate 207.

[0021] The support mechanism 1 includes a base 101, a rear support plate 102, a top plate 103, an ejection hole 104, a collision prevention plate 105, and an anti-wear pad 106. The rear support plate 102 is fixedly installed at a position on the rear side of the top of the base 101. The top plate 103 is fixedly installed at the top of the rear support plate 102. Collision prevention plates 105 are fixedly installed on both sides of the bottom end of the top plate 103. Anti-wear pads 106 are provided on the bottom surfaces of the collision prevention plates 105. An ejection hole 104 is provided at the center of the surface of the top plate 103.

[0022] The support mechanism 1 further includes a deviation correction platform 107, a deviation correction groove 108, a movable rod 109, a deviation correction plate 110, and a compression spring 111. Two deviation correction platforms 107 are fixedly installed on the surface of the rear support plate 102. Deviation correction grooves 108 are provided on the surfaces of the deviation correction platforms 107. Movable rods 109 are slidably installed inside the deviation correction grooves 108. Compression springs 111 are movably installed between the movable rods 109 and the interiors of the deviation correction grooves 108. One end of each compression spring 111 is connected to the inner wall of the deviation correction groove 108, and the other end of each compression spring 111 is connected to the movable rod 109. The outer ends of the movable rods 109 are fixedly installed with deviation correction plates 110.

[0023] Through the cooperation of the hydraulic cylinder 201 and the top plate 103, when the device is in use, the output end can be pushed out by the hydraulic cylinder 201, so as to drive the lifting platform 202 to rise. Then, the steel plate spring 5 is pushed upward through the lifting platform 202 and the pushing plate 207. Until the top surface of the steel plate spring 5 fits with the surface of the wear-resistant pad 106, at this time, the steel plate spring 5 will flatten at the bottom position of the wear-resistant pad 106 due to its own elasticity. At this time, the steel plate spring 5 will be fixed by the thrust of the pushing plate 207, thus avoiding the situation of shaking during the welding of the steel plate spring 5. And through the pushing of the steel plate spring 5 by the hydraulic cylinder 201, the elasticity of the steel plate spring 5 is detected before welding to avoid welding defective steel plate springs 5.

[0024] The adjusting structure 3 includes a fixed platform 301, a support frame 302, a connecting plate 303, a lead screw 304, a lead screw movable sleeve 305, an electric push rod 306, a base 307 and a servo motor 308. Bases 307 are fixedly installed on both sides of the base 101. Four support frames 302 are fixedly installed at the outer top ends of the bases 307. A fixed platform 301 is fixedly installed at the top ends of the support frames 302. A servo motor 308 is arranged inside the fixed platform 301. A connecting plate 303 is movably installed at the top end of the servo motor 308. The output end of the servo motor 308 is connected to a lead screw 304 through a coupling. The lead screw 304 penetrates through the connecting plate 303 and extends to a position above the connecting plate 303. A lead screw movable sleeve 305 is movably installed on the outer surface of the lead screw 304. Electric push rods 306 are fixedly installed on one side of the lead screw movable sleeve 305 close to the support mechanism 1.

[0025] The clamping structure 4 includes a fixing plate 401, a cylindrical platform 403, a telescopic rod 404, a positioning plate 405, a telescopic groove 407 and a pushing spring 408. The output end of the electric push rod 306 is fixedly connected to a fixing plate 401. Cylindrical platforms 403 are fixedly installed on both sides of the fixing plate 401. Telescopic grooves 407 are arranged inside the cylindrical platforms 403. Telescopic rods 404 are slidably installed inside the telescopic grooves 407. Positioning plates 405 are fixedly installed at the outer ends of the telescopic rods 404. Pushing springs 408 are movably installed between the telescopic rods 404 and the inner walls of the telescopic grooves 407. One end of the pushing spring 408 is connected to the inner wall of the telescopic groove 407, and the other end of the pushing spring 408 is connected to the telescopic rod 404.

[0026] The clamping structure 4 further includes a movable clamping plate 402, an L-shaped clamping block 406, a T-shaped sliding groove 409 and an adjusting spring 410. Two T-shaped sliding grooves 409 are provided at the bottom end of the fixed plate 401. Movable clamping plates 402 are slidably installed inside the T-shaped sliding grooves 409. Adjusting springs 410 are movably installed between the movable clamping plates 402 and the inside of the T-shaped sliding grooves 409. One end of each adjusting spring 410 is connected to the inner wall of the T-shaped sliding groove 409, and the other end of the adjusting spring 410 is connected to the movable clamping plate 402. L-shaped clamping blocks 406 are fixedly installed at the bottom ends of the movable clamping plates 402, and inclined surfaces are provided on the bottom surfaces of the L-shaped clamping blocks 406.

[0027] Through the cooperation of the adjusting structure 3 and the clamping structure 4, when the device is in use, the servo motor 308 can be driven to rotate the lead screw 304, so as to adjust the height position of the lead screw movable sleeve 305 on the surface of the lead screw 304, and further adjust the height position of the electric push rod 306. Subsequently, the fixed plate 401 is driven by the electric push rod 306 to be pushed outwards, so as to adjust the horizontal position of the lifting lug 6, so that the lifting lug 6 can be aligned with the two ends of the flat leaf spring 5, facilitating the welding of leaf springs 5 and lifting lugs 6 of different sizes.

[0028] The lifting lug 6 is movably clamped between the two movable clamping plates 402, and the bottom surface of the positioning plate 405 is in contact with the surface of the lifting lug 6.

[0029] The leaf spring 5 is provided with insertion holes, and the insertion pins 205 are movably inserted into the insertion holes. The bottom ends of the leaf springs 5 are in contact with the top surfaces of the push plates 207.

[0030] A plurality of support rods are fixedly installed at the bottom ends of the base 101 and the base 307.

[0031] When the welding system for assembling and processing the rear axle leaf spring is in use, first place the leaf spring 5 on the surface of the plug pin 205, so that the jack on the surface of the leaf spring 5 passes through the inside of the plug pin 205. At this time, according to the size of the jack of the leaf spring 5, insert a suitable section of the plug pin 205 into the inside of the jack. At this time, the output end can be driven by the hydraulic cylinder 201 to push outwards, so as to drive the lifting platform 202 to rise, and then drive the L-shaped connecting rod 203 and the pushing platform 204 to rise through the lifting platform 202. At this time, the pushing platform 204 will drive the two pushing plates 207 on its surface to rise at the same time, so as to push the leaf spring 5 to move upwards, and adjust the position of the pushing plate 207 through the compression spring 208, so that it can be adapted to leaf springs 5 with different bending degrees for use. Subsequently, the leaf spring 5 rises until the top surface of the leaf spring 5 fits the surface of the wear-resistant pad 106. At this time, the leaf spring 5 will flatten at the bottom position of the wear-resistant pad 106 due to its own elasticity. At this time, the leaf spring 5 will be fixed by the thrust of the pushing plate 207, so as to avoid the situation of shaking when the leaf spring 5 is welded. And through the pushing of the leaf spring 5 by the hydraulic cylinder 201, the elasticity of the leaf spring 5 is detected before welding to avoid welding defective leaf springs 5. And when pushing the leaf spring 5, the elastic drive of the compression spring 111 can be used to push the movable rod 109 outwards, so that the movable rod 109 drives the deviation correction plate 110 to squeeze the rear surface of the leaf spring 5, so that the leaf spring 5 is kept horizontal, avoiding the situation of deviation caused by the leaf spring 5 rotating around the plug pin 205 as the axis, and the position of the deviation correction plate 110 can be adjusted through the compression spring 111, so that the device can be adapted to leaf springs 5 of different sizes for use. When the leaf spring 5 is flattened by the push of the hydraulic cylinder 201, the lug 6 can be installed inside the clamping structure 4, so that the surface of the lug 6 hits the inclined surface at the bottom end of the L-shaped clamping block 406, so as to push the movable clamping plate 402 to move inside the T-shaped sliding groove 409, so that the distance between the movable clamping plates 402 is adapted to the width of the lug 6. Subsequently, the movable clamping plate 402 will be pushed by the elastic force of the adjusting spring 410 to clamp the lug 6 at the bottom end of the fixing plate 401. At the same time, the pushing spring 408 will drive the telescopic rod 404 to push outwards, so that the telescopic rod 404 drives the positioning plate 405 to squeeze the surface of the lug 6, so as to fix the lug 6. After the lug 6 is fixed, the screw rod 304 can be driven to rotate by the servo motor 308, so as to adjust the height position of the screw rod movable sleeve 305 on the surface of the screw rod 304, and then adjust the height position of the electric push rod 306. Subsequently, the fixing plate 401 is driven to push outwards by the electric push rod 306, so as to adjust the horizontal position of the lug 6, so that the lug 6 can be aligned with both ends of the flattened leaf spring 5, which is convenient for welding leaf springs 5 and lugs 6 of different sizes.

[0032] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A welding system for assembling and processing a rear axle leaf spring, comprising a support mechanism (1), characterized in that: The support mechanism (1) is provided with a lifting structure (2) inside, and adjustment structures (3) are provided on both sides of the support mechanism (1). The surfaces of the adjustment structures (3) are provided with clamping structures (4). The surfaces of the lifting structure (2) are sleeved with leaf springs (5), and the surfaces of the clamping structures (4) are clamped with lifting ears (6). The lifting structure (2) comprises a hydraulic cylinder (201), a lifting platform (202), an L-shaped connecting rod (203), a pushing platform (204) and a plug pin (205); the hydraulic cylinder (201) is movably mounted inside the supporting mechanism (1); the output end of the hydraulic cylinder (201) is fixedly connected to the lifting platform (202); both sides of the lifting platform (202) are fixedly mounted with L-shaped connecting rods (203); the top of the L-shaped connecting rod (203) is fixedly mounted with a pushing platform (204); the top of the lifting platform (202) is fixedly mounted with a plug pin (205); the plug pin (205) is divided into three sections, and the diameters of the three sections of the plug pin (205) gradually increase from top to bottom.

2. A welding system for assembling and processing a rear axle leaf spring according to claim 1, characterized in that: The lifting structure (2) further comprises a spring groove (206), a push plate (207) and a squeeze spring (208); the surface of the push platform (204) is provided with two spring grooves (206); the inside of the spring grooves (206) is slidably mounted with a push plate (207); a squeeze spring (208) is movably mounted between the push plate (207) and the inside of the spring grooves (206); one end of the squeeze spring (208) is connected to the inner wall of the spring groove (206); and the other end of the squeeze spring (208) is connected to the push plate (207).

3. A welding system for assembling and processing a rear axle leaf spring according to claim 2, characterized in that: The support mechanism (1) comprises a base (101), a rear support plate (102), a top plate (103), an ejection hole (104), an anti-collision plate (105) and an anti-wear pad (106); the rear support plate (102) is fixedly mounted at the rear side of the top end of the base (101); the top plate (103) is fixedly mounted at the top end of the rear support plate (102); anti-collision plates (105) are fixedly mounted on both sides of the bottom end of the top plate (103); the bottom end surfaces of the anti-collision plates (105) are provided with anti-wear pads (106); and the ejection hole (104) is provided at the center of the surface of the top plate (103).

4. A welding system for assembling and processing a rear axle leaf spring according to claim 3, characterized in that: The support mechanism (1) further comprises a deflection correction platform (107), a deflection correction groove (108), a movable rod (109), a deflection correction plate (110) and a compression spring (111); two deflection correction platforms (107) are fixedly mounted on the surface of the rear support plate (102); the surfaces of the deflection correction platforms (107) are provided with deflection correction grooves (108); movable rods (109) are slidably mounted inside the deflection correction grooves (108); compression springs (111) are movably mounted between the movable rods (109) and the inside of the deflection correction grooves (108); one end of the compression spring (111) is connected to the inner wall of the deflection correction groove (108); the other end of the compression spring (111) is connected to the movable rod (109); and the outer end of the movable rod (109) is fixedly mounted with a deflection correction plate (110).

5. A welding system for assembling and processing a rear axle leaf spring according to claim 4, characterized in that: The adjustment structure (3) comprises a fixed platform (301), a support frame (302), a connecting plate (303), a screw (304), a screw movable sleeve (305), an electric push rod (306), a base (307) and a servo motor (308). The bases (307) are fixedly mounted on both sides of the base (101). Four support frames (302) are fixedly mounted on the top of the base (307) on the outer side. The top of the support frame (302) is fixedly mounted with a fixed platform (301). The fixed platform (301) ) is provided on the inner side of the support mechanism (1), a servo motor (308) is movably mounted with a connecting plate (303) at the top end of the servo motor (308), an output end of the servo motor (308) is connected with a lead screw (304) via a coupling, the lead screw (304) passes through the connecting plate (303) and extends to a position above the connecting plate (303), a lead screw movable sleeve (305) is movably mounted on the outer surface of the lead screw (304), and an electric push rod (306) is fixedly mounted on the side of the lead screw movable sleeve (305) close to the support mechanism (1).

6. A welding system for assembling and processing a rear axle leaf spring according to claim 5, characterized in that: The clamping structure (4) comprises a fixed plate (401), a cylindrical platform (403), a telescopic rod (404), a positioning plate (405), a telescopic slot (407) and a pushing spring (408); the output end of the electric push rod (306) is fixedly connected to the fixed plate (401); cylindrical platforms (403) are fixedly installed on both sides of the fixed plate (401); telescopic slots (407) are provided inside the cylindrical platforms (403); telescopic rods (404) are slidably installed inside the telescopic slots (407); positioning plates (405) are fixedly installed on the outer ends of the telescopic rods (404); a pushing spring (408) is movably installed between the telescopic rod (404) and the inside of the telescopic slot (407); one end of the pushing spring (408) is connected to the inner wall of the telescopic slot (407); and the other end of the pushing spring (408) is connected to the telescopic rod (404).

7. A welding system for assembling and processing a rear axle leaf spring according to claim 6, characterized in that: The clamping structure (4) further comprises a movable clamping plate (402), an L-shaped clamping block (406), a T-shaped sliding groove (409) and an adjusting spring (410); two T-shaped sliding grooves (409) are provided at the bottom end of the fixed plate (401); movable clamping plates (402) are slidably installed inside the T-shaped sliding grooves (409); an adjusting spring (410) is movably installed between the movable clamping plate (402) and the inside of the T-shaped sliding grooves (409); one end of the adjusting spring (410) is connected to the inner wall of the T-shaped sliding groove (409); the other end of the adjusting spring (410) is connected to the movable clamping plate (402); an L-shaped clamping block (406) is fixedly installed at the bottom end of the movable clamping plate (402); and the bottom end surface of the L-shaped clamping block (406) is provided with an inclined surface.

8. The welding system for assembling and processing a rear axle leaf spring according to claim 7, characterized in that: The lifting ear (6) is movably inserted into a position between the two movable clamping plates (402), and the bottom end surface of the positioning plate (405) is in contact with the surface of the lifting ear (6).

9. The welding system for rear axle leaf spring assembly according to claim 2, characterized in that: The surface of the leaf spring (5) is provided with an insertion hole, the plug pin (205) is movably inserted into the interior of the insertion hole, and the bottom end of the leaf spring (5) is in contact with the top end surface of the push plate (207).

10. The welding system for assembling and processing a rear axle leaf spring according to claim 5, characterized in that: A plurality of support rods are fixedly mounted on the bottom ends of the base (101) and the base (307).

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