A welding system for assembling and processing rear axle leaf springs

Abstract

The present invention relates to the technical field of leaf spring welding, specifically a welding system for rear axle leaf spring assembly and processing, which solves the problem that rear axle leaf springs are often difficult to adapt to different leaf spring sizes during welding, and that the leaf springs are usually not subjected to elasticity qualification testing after the lifting lugs fall off and are damaged, resulting in the welding of defective products. The system comprises a support mechanism, wherein a lifting structure is provided inside the support mechanism, and adjustment structures are provided on both sides of the support mechanism. The present invention drives the output end outward through a hydraulic cylinder, thereby pushing the lifting platform up, and then pushing the leaf spring upward through the lifting platform and the push plate, until the top surface of the leaf spring fits with the surface of the anti-wear pad. At this time, the leaf spring will be flattened at the bottom end 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, thereby avoiding shaking during the welding of the leaf spring.

Description

Technical Field

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

[0002] Leaf springs are composed of multiple steel plates of unequal length and curvature. After installation, the ends naturally bend upward. When the road impacts the wheels, the steel plates deform, providing cushioning and vibration reduction. When arranged longitudinally, they also guide and transmit force. Non-independent suspensions mostly use leaf springs as elastic elements, eliminating the need for guides and shock absorbers, resulting in a simpler structure.

[0003] When a leaf spring is damaged, the lugs on both sides tend to fall off, requiring re-welding to fix it.

[0004] Existing rear axle leaf springs often have difficulty adapting to different leaf spring sizes during welding. Furthermore, after the lugs fall off and become damaged, the leaf springs are usually not tested for elasticity, resulting in defective welds. Therefore, this system does not meet existing needs. Therefore, we have proposed a welding system for rear axle leaf spring assembly and processing. Summary of the Invention

[0005] The purpose of the present invention is to provide a welding system for assembling and processing rear axle leaf springs, so as to solve the problems raised in the above-mentioned background technology, such as the difficulty in adapting the rear axle leaf springs to different leaf spring sizes during welding, and the elasticity qualification test is usually not carried out after the leaf springs are damaged by the lifting lugs falling off, resulting in defective products being welded.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding system for assembling and processing a rear axle leaf spring, comprising a support mechanism, a lifting structure provided inside the support mechanism, adjustment structures provided on both sides of the support mechanism, clamping structures provided on the surfaces of the adjustment structures, a leaf spring sleeved on the surface of the lifting structure, and lifting ears clamped on the surfaces of the clamping structures;

[0007] The lifting structure includes a hydraulic cylinder, a lifting platform, an L-shaped connecting rod, a pushing platform and a connecting pin. The hydraulic cylinder is movably installed inside the supporting 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. The top of the L-shaped connecting rod is fixedly installed with the pushing platform. The top of the lifting platform is fixedly installed with a connecting pin. The connecting pin is divided into three sections, and the diameters of the three sections of the connecting pins gradually increase from top to bottom.

[0008] Preferably, the lifting structure also includes a spring groove, a push plate and an extrusion spring. Two spring grooves are provided on the surface of the push platform. Push plates are slidably installed inside the spring grooves. Extrusion springs are movably installed between the push plates and the inside of the spring grooves. One end of the extrusion spring is connected to the inner wall of the spring groove, and the other end of the extrusion spring is connected to the push plate.

[0009] Preferably, the supporting mechanism includes a base, a rear support plate, a top plate, an ejection hole, an anti-collision plate and an anti-wear pad. The rear support plate is fixedly installed at the rear side of the top end of the base, the top plate is fixedly installed at the top end of the rear support plate, anti-collision plates are fixedly installed on both sides of the bottom end of the top plate, the bottom end surface of the anti-collision plate is provided with an anti-wear pad, and the center of the top plate surface is provided with an ejection hole.

[0010] Preferably, the support mechanism also includes a correction platform, a correction groove, a movable rod, a correction plate and a compression spring. Two correction platforms are fixedly installed on the surface of the rear support plate. The surfaces of the correction platforms are provided with correction grooves. Movable rods are slidably installed inside the correction grooves. Compression springs are movably installed between the movable rods and the inside of the correction grooves. One end of the compression spring is connected to the inner wall of the correction groove, and the other end of the compression spring is connected to the movable rod. The outer end of the movable rod is fixedly installed with a correction plate.

[0011] Preferably, the adjustment structure includes a fixed platform, a support frame, a connecting plate, a screw rod, a screw rod 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 on the top end of the base close to the outer side, a fixed platform is fixedly installed on the top end of the support frame, a servo motor is provided on the inner side of the fixed platform, a connecting plate is movably installed on the top end of the servo motor, the output end of the servo motor is connected to a screw rod through a coupling, the screw rod passes through the connecting plate and extends to a position above the connecting plate, a screw rod movable sleeve is movably installed on the outer surface of the screw rod, and an electric push rod is fixedly installed on the side of the screw rod movable sleeve close to the supporting mechanism.

[0012] Preferably, the clamping structure includes a fixed plate, a cylindrical table, a telescopic rod, a positioning plate, a telescopic slot and a push spring, the output end of the electric push rod is fixedly connected to the fixed plate, the cylindrical tables are fixedly installed on both sides of the fixed plate, the interior of the cylindrical tables is provided with a telescopic slot, the interior of the telescopic slot is slidably installed with a telescopic rod, the outer end of the telescopic rod is fixedly installed with a positioning plate, and a push spring is movably installed between the telescopic rod and the interior of the telescopic slot, one end of the push spring is connected to the inner wall of the telescopic slot, and the other end of the push spring is connected to the telescopic rod.

[0013] Preferably, the clamping structure also includes a movable clamping plate, an L-shaped clamping block, a T-shaped sliding groove and an adjusting spring. The bottom end of the fixed plate is provided with two T-shaped sliding grooves, and a movable clamping plate is slidably installed inside the T-shaped sliding grooves. An adjusting spring is movably installed between the movable clamping plate and the inside of the T-shaped sliding groove. One end of the adjusting spring is connected to the inner wall of the T-shaped sliding groove, and the other end of the adjusting spring is connected to the movable clamping plate. The bottom end of the movable clamping plate is fixedly installed with an L-shaped clamping block, and the bottom end surface of the L-shaped clamping block is provided with an inclined surface.

[0014] Preferably, the lifting ear is movably inserted into a position between two movable clamping plates, and the bottom end surface of the positioning plate is in contact with the surface of the lifting ear.

[0015] Preferably, a socket is provided on the surface of the leaf spring, the plug pin is movably inserted into the socket, and the bottom end of the leaf spring is in contact with the top surface of the push plate.

[0016] Preferably, a plurality of support rods are fixedly mounted on the bottom ends of the base and the bottom end of the base.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention cooperates with the hydraulic cylinder and the top plate, so that when the device is in use, the hydraulic cylinder can drive the output end to push outward, thereby pushing the lifting platform up, and then pushing the leaf spring upward through the lifting platform and the pushing plate until the top surface of the leaf spring is in contact with the surface of the anti-wear pad. At this time, the leaf spring will be flattened at the bottom end of the anti-wear pad due to its own elasticity. At this time, the leaf spring will be fixed by the pushing force of the pushing plate, thereby avoiding shaking during the welding of the leaf spring. In addition, the pushing of the leaf spring by the hydraulic cylinder can detect whether the elasticity of the leaf spring is qualified before welding, thereby avoiding the situation of welding defective leaf springs.

[0019] 2. The present invention cooperates with the adjustment structure and the clamping structure so that when the device is in use, the servo motor can drive the screw to rotate, thereby adjusting the height position of the screw movable sleeve on the screw surface, and then adjusting the height position of the electric push rod. Subsequently, the electric push rod drives the fixed plate to be pushed outward, thereby adjusting the horizontal position of the lifting ear, so that the lifting ear can be aligned with the two end positions of the flat leaf spring, which is convenient for welding leaf springs and lifting ears of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the local structure of part A;

[0022] Figure 3 A cross-sectional front view of the present invention as a whole;

[0023] Figure 4 A sectional side view of the present invention as a whole;

[0024] Figure 5 A sectional side view of the clamping structure of the present invention;

[0025] Figure 6 For the present invention Figure 3 Schematic diagram of the local structure of part B;

[0026] Figure 7 For the present invention Figure 3 Schematic diagram of the local structure of part C;

[0027] Figure 8 For the present invention Figure 5 Schematic diagram of the local structure of part D.

[0028] 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. Correction platform; 108. Correction groove; 109. Movable rod; 110. Correction plate; 111. Compression spring; 2. Lifting structure; 201. Hydraulic cylinder; 202. Lifting platform; 203. L-shaped connecting rod; 204. Pushing platform; 205. Connecting pin; 206. Spring groove; 207. Pushing plate; 208. Extrusion spring; 3. Adjustment Structure; 301, fixed platform; 302, support frame; 303, connecting plate; 304, screw rod; 305, screw rod movable sleeve; 306, electric push rod; 307, base; 308, servo motor; 4, clamping structure; 401, fixed plate; 402, movable clamping plate; 403, cylindrical platform; 404, telescopic rod; 405, positioning plate; 406, L-shaped clamping block; 407, telescopic slot; 408, push spring; 409, T-shaped sliding slot; 410, adjusting spring; 5, leaf spring; 6, lifting ear. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figures 1 to 8The present invention provides an embodiment of a welding system for assembling and processing a rear axle leaf spring, comprising a support mechanism 1, a lifting structure 2 being provided inside the support mechanism 1, adjustment structures 3 being provided on both sides of the support mechanism 1, clamping structures 4 being provided on the surfaces of the adjustment structures 3, a leaf spring 5 being sleeved on the surface of the lifting structure 2, and lifting ears 6 being clamped on the surfaces of the clamping structures 4;

[0031] 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 connecting pin 205. The hydraulic cylinder 201 is movably installed inside the supporting 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. The top of the L-shaped connecting rod 203 is fixedly installed with the pushing platform 204. The top of the lifting platform 202 is fixedly installed with a connecting pin 205. The connecting pin 205 is divided into three sections, and the diameters of the three sections of the connecting pin 205 gradually increase from top to bottom.

[0032] The lifting structure 2 also includes a spring groove 206, a push plate 207 and an extrusion spring 208. Two spring grooves 206 are provided on the surface of the push platform 204. Push plates 207 are slidably installed inside the spring grooves 206. Extrusion springs 208 are movably installed between the push plates 207 and the inside of the spring grooves 206. One end of the extrusion spring 208 is connected to the inner wall of the spring groove 206, and the other end of the extrusion spring 208 is connected to the push plate 207.

[0033] The supporting mechanism 1 includes 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 installed at 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, and anti-collision plates 105 are fixedly installed on both sides of the bottom end of the top plate 103. The bottom end surface of the anti-collision plate 105 is provided with an anti-wear pad 106, and an ejection hole 104 is provided in the center of the surface of the top plate 103.

[0034] The support mechanism 1 also includes a correction platform 107, a correction groove 108, a movable rod 109, a correction plate 110 and a compression spring 111. Two correction platforms 107 are fixedly installed on the surface of the rear support plate 102. The surfaces of the correction platforms 107 are provided with correction grooves 108. The inside of the correction grooves 108 are slidably installed with movable rods 109. Compression springs 111 are movably installed between the movable rods 109 and the inside of the correction grooves 108. One end of the compression spring 111 is connected to the inner wall of the correction groove 108, and the other end of the compression spring 111 is connected to the movable rod 109. The outer end of the movable rod 109 is fixedly installed with a correction plate 110.

[0035] Through the cooperation of the hydraulic cylinder 201 and the top plate 103, when the device is in use, the hydraulic cylinder 201 can drive the output end to be pushed outward, thereby pushing the lifting platform 202 to rise, and then pushing the steel leaf spring 5 upward through the lifting platform 202 and the pushing plate 207 until the top surface of the steel leaf spring 5 is in contact with the surface of the anti-wear pad 106. At this time, the steel leaf spring 5 will be flattened at the bottom end position of the anti-wear pad 106 due to its own elasticity. At this time, the steel leaf spring 5 will be fixed by the thrust of the pushing plate 207, thereby avoiding shaking of the steel leaf spring 5 during welding. In addition, by pushing the steel leaf spring 5 by the hydraulic cylinder 201, the elasticity of the steel leaf spring 5 is tested before welding to avoid welding of defective steel leaf springs 5.

[0036] The adjustment structure 3 includes a fixed platform 301, a support frame 302, a connecting plate 303, a screw rod 304, a screw rod movable sleeve 305, an electric push rod 306, a base 307 and a servo motor 308. The base 307 is fixedly installed on both sides of the base 101, and four support frames 302 are fixedly installed on the top of the outer side of the base 307. The top of the support frame 302 is fixedly installed with a fixed platform 301, and a servo motor 308 is provided on the inner side of the fixed platform 301. The top of the servo motor 308 is movably installed with a connecting plate 303. The output end of the servo motor 308 is connected to the screw rod 304 through a coupling. The screw rod 304 penetrates the connecting plate 303 and extends to the upper position of the connecting plate 303. The outer surface of the screw rod 304 is movably installed with a screw rod movable sleeve 305, and the electric push rod 306 is fixedly installed on the side of the screw rod movable sleeve 305 close to the support mechanism 1.

[0037] The clamping structure 4 includes a fixed plate 401, a cylindrical table 403, a telescopic rod 404, a positioning plate 405, a telescopic slot 407 and a push spring 408. The output end of the electric push rod 306 is fixedly connected to the fixed plate 401. The cylindrical tables 403 are fixedly installed on both sides of the fixed plate 401. The interior of the cylindrical tables 403 is provided with a telescopic slot 407. The interior of the telescopic slot 407 is slidably installed with the telescopic rod 404. The outer end of the telescopic rod 404 is fixedly installed with a positioning plate 405. A push spring 408 is movably installed between the telescopic rod 404 and the interior of the telescopic slot 407. One end of the push spring 408 is connected to the inner wall of the telescopic slot 407, and the other end of the push spring 408 is connected to the telescopic rod 404.

[0038] The clamping structure 4 also 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. The movable clamping plate 402 is 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, and the other end of the adjusting spring 410 is connected to the movable clamping plate 402. The bottom end of the movable clamping plate 402 is fixedly installed with an L-shaped clamping block 406, and the bottom end surface of the L-shaped clamping block 406 is provided with a slope.

[0039] By cooperating with the adjustment structure 3 and the clamping structure 4, when the device is in use, the servo motor 308 can be used to drive the screw rod 304 to rotate, thereby adjusting the height position of the screw rod movable sleeve 305 on the surface of the screw rod 304, and then adjusting the height position of the electric push rod 306. Subsequently, the electric push rod 306 drives the fixed plate 401 to be pushed outward, thereby adjusting the horizontal position of the lifting ear 6, so that the lifting ear 6 can be aligned with the two end positions of the flattened leaf spring 5, which is convenient for welding leaf springs 5 ​​and lifting ears 6 of different sizes.

[0040] The lifting ear 6 is movably inserted into the position 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 ear 6 .

[0041] A socket is provided on the surface of the leaf spring 5 , and the plug pin 205 is movably inserted into the socket, and the bottom end of the leaf spring 5 is in contact with the top surface of the push plate 207 .

[0042] A plurality of support rods are fixedly mounted on the bottom ends of the base 101 and the base 307 .

[0043] When the rear axle leaf spring assembly and processing welding system is in use, the leaf spring 5 is first placed on the surface of the plug pin 205 so that the socket on the surface of the leaf spring 5 passes through the interior of the plug pin 205. At this time, according to the size of the socket of the leaf spring 5, the adapted section of the plug pin 205 can be inserted into the interior of the socket. At this time, the output end can be driven outward by the hydraulic cylinder 201, so that it pushes the lifting platform 202 to rise, and then the lifting platform 202 pushes the L-shaped connecting rod 203 and the pushing platform 204 to rise. At this time, the pushing platform 204 will drive the two pushing plates 207 on its surface to rise at the same time, thereby pushing the leaf spring 5 to move upward, and through The position of the push plate 207 is adjusted by squeezing the spring 208 so that it can be used with leaf springs 5 ​​of different bending degrees. Then the leaf spring 5 rises until the top surface of the leaf spring 5 is in contact with the surface of the anti-wear pad 106. At this time, the leaf spring 5 will be flattened at the bottom end of the anti-wear pad 106 due to its own elasticity. At this time, the leaf spring 5 will be fixed by the thrust of the push plate 207, thereby avoiding the shaking of the leaf spring 5 during welding. In addition, the leaf spring 5 is pushed by the hydraulic cylinder 201 to test whether the elasticity of the leaf spring 5 is qualified before welding, so as to avoid welding defective leaf springs 5.

[0044] When the leaf spring 5 is pushed, the elasticity of the compression spring 111 can be used to drive the movable rod 109 to be pushed outward, so that the movable rod 109 drives the correction plate 110 to squeeze the rear surface of the leaf spring 5, thereby keeping the leaf spring 5 horizontal, avoiding the leaf spring 5 from rotating along the plug pin 205 as the axis and causing deviation. The position of the correction plate 110 can be adjusted by the compression spring 111, so that the device can be adapted to leaf springs 5 ​​of different sizes for use.

[0045] After the leaf spring 5 is pushed flat by the hydraulic cylinder 201, the lifting ear 6 can be installed inside the clamping structure 4, so that the surface of the lifting ear 6 hits the inclined surface at the bottom end of the L-shaped clamping block 406, thereby pushing the movable clamping plate 402 to move inside the T-shaped sliding groove 409, so that the spacing between the movable clamping plates 402 adapts to the width of the lifting ear 6, and then the movable clamping plate 402 is pushed by the elastic force of the adjusting spring 410 to clamp the lifting ear 6 at the bottom end position of the fixed plate 401, and at the same time, the pushing spring 408 drives the telescopic rod 404 to be pushed outward, so that the telescopic rod 404 drives the positioning plate 405 to squeeze the surface of the lifting ear 6, thereby fixing the lifting ear 6

[0046] After the lifting ear 6 is fixed, the lead screw 304 can be driven to rotate by the servo motor 308, thereby adjusting the height position of the lead screw movable sleeve 305 on the surface of the lead screw 304, and then adjusting the height position of the electric push rod 306. Subsequently, the fixed plate 401 is driven outward by the electric push rod 306 to adjust the horizontal position of the lifting ear 6, so that the lifting ear 6 can be aligned with the two end positions of the flat leaf spring 5, which is convenient for welding leaf springs 5 ​​and lifting ears 6 of different sizes.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

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), wherein 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 end of the L-shaped connecting rods (203) is fixedly mounted with the pushing platform (204), the top end 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 pins (205) gradually increase from top to bottom; The lifting structure (2) further comprises a spring groove (206), a push plate (207) and an extrusion spring (208), the surface of the push platform (204) is provided with two spring grooves (206), the interior of the spring grooves (206) is slidably mounted with a push plate (207), an extrusion spring (208) is movably mounted between the push plate (207) and the interior of the spring grooves (206), one end of the extrusion spring (208) is connected to the inner wall of the spring groove (206), and the other end of the extrusion spring (208) is connected to the push plate (207); 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 on the rear side of the top of the base (101); the top plate (103) is fixedly mounted on the top of the rear support plate (102); anti-collision plates (105) are fixedly mounted on both sides of the bottom of the top plate (103); the bottom surface of the anti-collision plate (105) is provided with an anti-wear pad (106); and the center of the surface of the top plate (103) is provided with an ejection hole (104); 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 each provided with a deflection correction groove (108); movable rods (109) are slidably mounted inside the deflection correction groove (108); a compression spring (111) is movably mounted between the movable rod (109) and the inside of the deflection correction groove (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).

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

3. The welding system for assembling and processing a rear axle leaf spring according to claim 2, 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 push spring (408); the output end of the electric push rod (306) is fixedly connected to the fixed plate (401); the cylindrical platforms (403) are fixedly installed on both sides of the fixed plate (401); the interior of the cylindrical platforms (403) is provided with a telescopic slot (407); the interior of the telescopic slot (407) is slidably installed with a telescopic rod (404); the outer end of the telescopic rod (404) is fixedly installed with a positioning plate (405); a push spring (408) is movably installed between the telescopic rod (404) and the interior of the telescopic slot (407); one end of the push spring (408) is connected to the inner wall of the telescopic slot (407); and the other end of the push spring (408) is connected to the telescopic rod (404).

4. The welding system for assembling and processing a rear axle leaf spring according to claim 3, 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), wherein the bottom end of the fixed plate (401) is provided with two T-shaped sliding grooves (409), the inside of each of the T-shaped sliding grooves (409) is slidably mounted with a movable clamping plate (402), an adjusting spring (410) is movably mounted between the movable clamping plate (402) and the inside of the T-shaped sliding groove (409), one end of the 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), the bottom end of each of the movable clamping plates (402) is fixedly mounted with an L-shaped clamping block (406), and the bottom end surface of each of the L-shaped clamping blocks (406) is provided with an inclined surface.

5. The welding system for assembling and processing a rear axle leaf spring according to claim 4, characterized in that: The lifting ear (6) is movably inserted into a position 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 ear (6).

6. The welding system for assembling and processing a rear axle leaf spring according to claim 1, characterized in that: The surface of the leaf spring (5) is provided with a socket, the plug pin (205) is movably inserted into the socket, and the bottom end of the leaf spring (5) is in contact with the top surface of the push plate (207).

7. The welding system for assembling and processing a rear axle leaf spring according to claim 1, 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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