A clamping device for welding the frame of an automotive seat.

Abstract

This invention discloses a clamping device for welding the frame of an automotive seat, belonging to the technical field of automotive parts welding equipment. The device includes a base plate, with a rotating mechanism fixedly mounted at the top center of the base plate. Two support mechanisms are mounted on the rotating mechanism. Multiple frame clamping mechanisms and multiple spring clamping mechanisms are mounted on each of the two support mechanisms. This invention, through the design of the frame clamping and spring clamping mechanisms, can quickly clamp the backrest frame and backrest springs, and can clamp two layers of backrest springs simultaneously, thus facilitating welding. During subsequent material removal, the frame clamping mechanism can quickly lift the welded backrest frame, making it easy for workers to remove it.

Description

Technical Field

[0001] This invention belongs to the technical field of automotive parts welding equipment, specifically relating to a clamping device for welding the frame of an automotive seat. Background Technology

[0002] The car seat frame is the core support structure of the seat, directly affecting safety, comfort, and durability. It is typically made of metal (steel / aluminum alloy) or composite materials, and must meet requirements for a balance between strength, lightweight, and cost. The car seat frame includes the backrest frame, springs, slide rails, and seat cushion frame. These parts are usually welded together, and welding clamping devices are commonly used during the welding process, serving as key tooling to ensure welding accuracy, consistency, and production efficiency. Its design must also consider positioning accuracy, rigidity, operability, and compatibility.

[0003] Car seat frames typically consist of a backrest frame and a seat cushion frame. Springs are usually welded onto the backrest frame, which mainly serve as a cushioning element to improve the comfort and durability of the seat. Due to their irregular shape, current welding methods usually involve manual support and fixation, with one hand holding the spring while the other hand welds. This method is inefficient and lacks precision. Furthermore, the springs on the backrest frame have single-layer and double-layer designs. Welding double-layer springs is more troublesome, requiring manual flipping after each weld, which further reduces welding efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a clamping device for welding the frame of automobile seat production.

[0005] The technical solution adopted to solve the above technical problems is: a clamping device for welding the frame of automobile seat production, including a base plate, a rotating mechanism fixedly installed at the top center of the base plate, and two support mechanisms installed on the rotating mechanism;

[0006] Both of the support mechanisms are equipped with multiple skeleton clamping mechanisms, and both of the support mechanisms are equipped with multiple spring clamping mechanisms.

[0007] Furthermore, the rotating mechanism includes a first support base and a second support base fixedly connected to the top of the base plate. A first housing is fixedly connected to the top of the first support base. A rotating shaft is rotatably connected between the first housing and the second support base. A light-blocking plate is fixedly connected to the center of the outer wall of the rotating shaft. A first gear ring is fixedly connected to the front end of the outer wall of the rotating shaft. A first motor is fixedly installed inside the first housing. A first gear is fixedly connected to the outer wall of the output shaft of the first motor. Connecting strips are fixedly connected to both the front and rear ends of the outer wall of the rotating shaft. Mounting bases and the second housing are fixedly connected to the two ends of the two connecting strips, respectively.

[0008] With the above technical solution, when the backrest frame and backrest spring on one of the support mechanisms are clamped and fixed, and welding is required, the workstation needs to be switched. The first motor is started, and the output shaft rotates to drive the first gear to rotate, which in turn drives the meshing first gear ring to rotate, which in turn drives the connected rotating shaft to rotate, thereby driving the two support mechanisms to rotate. This achieves workstation switching, moving the backrest frame to be welded closer to the welding robot, while the already welded backrest frame is moved to the opposite position, making it convenient for the worker to remove it. At the same time, while the welding robot is welding, the worker can install a new backrest frame. Each time the welding robot finishes welding a backrest frame, the worker completes the clamping process for a new batch of backrest frames. The two processes do not interfere with each other; only workstation switching is needed to achieve high-efficiency processing.

[0009] Furthermore, the first gear ring meshes with the first gear, and both are located within the first housing.

[0010] Through the above technical solution, the light-blocking plate can effectively block the infrared and ultraviolet rays generated during the welding process, allowing workers to work safely. When the shaft rotates, it drives the light-blocking plate to rotate synchronously. When the two support mechanisms rotate to the horizontal position, the light-blocking plate is perpendicular to the two support mechanisms, which can effectively block harmful light rays.

[0011] Furthermore, the support mechanism includes a welding plate with multiple corrugated holes on its top. Connecting shafts are fixedly connected to both the front and rear ends of the welding plate. A second gear ring is fixedly connected to the front end of the outer wall of one of the connecting shafts. A second motor is fixedly installed inside the second housing, and a second gear is fixedly connected to the outer wall of the output shaft of the second motor.

[0012] With the above technical solution, after the backrest frame and backrest springs are clamped and fixed on the welding plate, the welding operation is carried out by first welding the first layer of backrest springs. After welding, the second layer of backrest springs needs to be welded. At this time, the second motor is started, and the output shaft rotates to drive the second gear to rotate, which in turn drives the meshing second gear ring to rotate, which in turn drives the connected second gear ring to rotate, which in turn drives the welding plate to rotate. After rotating 180 degrees, the second layer of backrest springs is facing upwards, and the welding robot can weld the second layer of backrest springs through the corrugated holes, thereby achieving rapid welding. In terms of clamping, after clamping the first layer of backrest springs, the welding plate is also rotated 180 degrees, and the operator passes through the corrugated holes to clamp the backrest springs through the spring clamping mechanism. There is no need for the operator to manually flip the entire clamping fixture, which improves processing efficiency.

[0013] Furthermore, the two connecting shafts are rotatably connected to the mounting base and the second housing, respectively, and the second gear ring meshes with the second gear.

[0014] With the above technical solution, the rotation of the two welding plates does not affect the balance of the entire rotation mechanism, and both welding plates are driven by an independent second motor, which facilitates the clamping and welding of the backrest frame.

[0015] Furthermore, the top of the welding plate is provided with multiple backrest springs, which are aligned with corresponding corrugated holes. The tooling operator can clamp the corresponding backrest spring through the corrugated holes, and the welding robot can weld the corresponding backrest spring through the corrugated holes.

[0016] Furthermore, the skeleton clamping mechanism includes a support plate fixedly connected to the top of the welding plate, a base fixedly connected to one top end of the support plate, a lower clamping seat slidably connected inside the base, a first cylinder fixedly installed at the bottom of the welding plate near the lower clamping seat, a third support seat fixedly connected to the other top end of the support plate, a first connecting seat rotatably connected to the top of the third support seat, an upper clamping seat fixedly connected to one end of the first connecting seat, and a second cylinder fixedly installed at the top center of the support plate, with a second connecting seat rotatably connected to the top of the piston of the second cylinder.

[0017] With the above technical solution, when clamping the backrest frame, the operator places the backrest frame on multiple lower clamping seats, ensuring they are flush against the outer wall. Simultaneously, multiple second cylinders are activated, each retracting the second connecting seat via a piston, thereby pulling the first connecting seat and causing the upper clamping seats to rotate. This ensures that the multiple upper clamping seats are flush against the top of the outer wall of the backrest frame, achieving clamping. After welding the backrest frame to multiple backrest springs, when removing the backrest frame, the pistons of the multiple second cylinders push, simultaneously activating multiple first cylinders, each pushing the lower clamping seats via a piston, thereby pushing the welded backrest frame. This causes the multiple backrest springs to separate from the spring clamping mechanism, facilitating the removal of the backrest frame by the operator.

[0018] Furthermore, the top of the first cylinder piston is fixedly connected to the bottom of the lower clamping seat, the second connecting seat is rotatably connected to the first connecting seat, and the upper clamping seat and the lower clamping seat clamp the outer wall of the backrest frame.

[0019] The above technical solution improves the stability of the backrest frame during welding by having multiple lower clamping seats and corresponding upper clamping seats clamp it simultaneously, thereby improving the welding accuracy.

[0020] Furthermore, the spring clamping mechanism includes two F-shaped frames fixedly connected to the top of the welding plate, and W-shaped frames fixedly connected to the inner walls of the two F-shaped frames. Multiple sets of connecting springs are fixedly connected to the inner walls of the two W-shaped frames, and a clamping block is fixedly connected to one end of each set of connecting springs.

[0021] With the above technical solution, when clamping a single layer of backrest springs, first align both ends of the single layer of backrest springs with the corresponding frame connecting sleeves. Then, forcefully squeeze the backrest springs, causing them to simultaneously squeeze multiple clamping blocks. The multiple clamping blocks contract under the action of the connecting springs. When they are pushed to the middle position of the two clamping blocks, they are clamped by the connecting springs. After the support mechanism flips, the second layer of backrest springs is clamped in the same way. Multiple spring clamping mechanisms clamp simultaneously, improving clamping accuracy and preventing the backrest springs from shifting during welding. Furthermore, clamping two layers of backrest springs at once facilitates subsequent welding of the two layers of backrest springs.

[0022] Furthermore, the plurality of clamping blocks are slidably connected to the corresponding W-shaped frame, and the plurality of clamping blocks clamp the outer wall of the corresponding backrest spring.

[0023] With the above technical solution, when the welded backrest frame is removed, the entire backrest frame is pushed upward by the lower clamping seat, thereby contacting multiple clamping blocks. Since the clamping edges of the clamping blocks are beveled, it is convenient for the backrest spring to be squeezed out and will not get stuck.

[0024] The beneficial effects of the present invention are as follows: (1) The present invention can quickly clamp the backrest frame and backrest spring by designing a frame clamping mechanism and a spring clamping mechanism, and can clamp two layers of backrest springs at the same time, which facilitates welding. In the subsequent material handling process, the frame clamping mechanism can quickly lift it up, which makes it convenient for workers to remove the welded backrest frame; (2) The present invention can clamp and weld the backrest frame at the same time by designing a rotating mechanism and a supporting mechanism. Multiple workstations can be carried out at the same time, and the workstations can be flipped to facilitate clamping and welding. No manual operation is required, which improves processing efficiency. In addition, a light-blocking plate is designed in the middle to block harmful light and protect the health of workers. Attached Figure Description

[0025] Figure 1 This is a first-view overall appearance view of the present invention;

[0026] Figure 2 This is a second-view overall appearance view of the present invention;

[0027] Figure 3 This is the overall front view of the present invention;

[0028] Figure 4 This is a schematic diagram of the rotating mechanism structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the support mechanism structure of the present invention;

[0030] Figure 6 This is a top view of the support mechanism of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of some parts of the support mechanism of the present invention;

[0032] Figure 8 This is an unfolded diagram of the skeleton clamping mechanism of the present invention;

[0033] Figure 9 This is a schematic diagram of the spring clamping mechanism of the present invention;

[0034] Figure 10 This is a schematic diagram of the backrest spring clamping structure of the present invention;

[0035] Figure 11 This is a schematic diagram of the arrangement structure of the backrest frame, multiple frame connecting sleeves, and multiple backrest springs of the present invention.

[0036] Reference numerals: 1. Base plate; 2. Rotating mechanism; 201. First support base; 202. First housing; 203. Second support base; 204. Rotating shaft; 205. Light-blocking plate; 206. First gear ring; 207. First motor; 208. First gear; 209. Connecting strip; 210. Mounting base; 211. Second housing; 3. Support mechanism; 301. Welding plate; 302. Corrugated hole; 303. Connecting shaft; 304. Second gear ring; 305. Second motor; 306. First gear ring; 207. First motor; 208. Second gear; 209. Connecting bar; 210. Mounting base; 211. Second housing; 309. Supporting mechanism; 200. First gear ring; 200. Second gear ring; 201. Second gear ring; 202. First housing; 203. Second gear ring; 204. Second gear ring; 205. Second motor; 206. Second gear ring; 207. First gear ring; 208. Second gear ring; 209. Second gear ring; 20 ... 4. Frame clamping mechanism; 401. Support plate; 402. Base; 403. Lower clamping seat; 404. First cylinder; 405. Third support seat; 406. First connecting seat; 407. Upper clamping seat; 408. Second cylinder; 409. Second connecting seat; 5. Spring clamping mechanism; 501. F-shaped frame; 502. W-shaped frame; 503. Connecting spring; 504. Clamping block; 6. Welding robot; 7. Backrest frame; 71. Frame connecting sleeve; 72. Backrest spring. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] like Figures 1-4As shown in the figure, a clamping device for welding the frame of an automobile seat in this embodiment includes a base plate 1. A rotating mechanism 2 is fixedly installed at the top center of the base plate 1. The rotating mechanism 2 includes a first support 201 and a second support 203 fixedly connected to the top of the base plate 1. A first housing 202 is fixedly connected to the top of the first support 201. A rotating shaft 204 is rotatably connected between the first housing 202 and the second support 203. A light-blocking plate 205 is fixedly connected to the center of the outer wall of the rotating shaft 204. A first gear ring is fixedly connected to the front end of the outer wall of the rotating shaft 204. 206. A first motor 207 is fixedly installed inside the first housing 202. A first gear 208 is fixedly connected to the outer wall of the output shaft of the first motor 207. Connecting strips 209 are fixedly connected to the front and rear ends of the outer wall of the rotating shaft 204. Mounting bases 210 and the second housing 211 are fixedly connected to the two ends of the two connecting strips 209, respectively. When the backrest frame 7 and backrest spring 72 on one of the support mechanisms 3 are clamped and fixed, and welding is required, the work station needs to be switched, the first motor 207 is started, and the first gear 208 is driven by the output shaft rotation. The first gear 206 rotates, causing the meshing first gear ring 206 to rotate, which in turn causes the connected rotating shaft 204 to rotate, thereby causing the two support mechanisms 3 to rotate. This achieves a workstation switch, moving the backrest frame 7 to be welded closer to the welding robot 6, while the already welded backrest frame 7 is moved to the opposite position, making it easier for the worker to remove it. At the same time, while the welding robot 6 is welding, the worker can install new backrest frames 7. Each time the welding robot 6 finishes welding a backrest frame 7, the worker completes the clamping process for a new batch of backrest frames 7. The two processes do not interfere with each other; only a workstation switch is needed to achieve high-efficiency processing. The first gear ring 206 meshes with the first gear 208 and is located within the first housing 202. During the welding process, the light-blocking plate 205 can effectively block the infrared and ultraviolet rays generated during welding, allowing the worker to work safely. When the rotating shaft 204 rotates, it simultaneously drives the light-blocking plate 205 to rotate. When the two support mechanisms 3 rotate to the horizontal position, the light-blocking plate 205 is perpendicular to the two support mechanisms 3, effectively blocking harmful light rays.

[0039] like Figures 1-10As shown, two support mechanisms 3 are installed on the rotating mechanism 2. The support mechanism 3 includes a welding plate 301. The top of the welding plate 301 has multiple corrugated holes 302. The front and rear ends of the welding plate 301 are fixedly connected to connecting shafts 303. The outer front end of one of the connecting shafts 303 is fixedly connected to a second gear ring 304. A second motor 305 is fixedly installed inside the second housing 211. The outer wall of the output shaft of the second motor 305 is fixedly connected to a second gear 306. When the backrest frame 7 and the backrest spring 72 are clamped and fixed on the welding plate 301, the welding operation is performed. First, the first layer of backrest spring 72 is welded. After welding, the second layer of backrest spring 72 needs to be welded. At this time, the second motor 305 is started, and the output shaft rotates to drive the second gear 306 to rotate, thereby driving the meshing second gear ring 304 to rotate, thereby driving the connected second gear ring 304 to rotate, thereby driving the welding plate 301 to rotate. After rotating 180 degrees, the second layer of backrest spring 72 is facing upwards, and the welding robot 6 can rotate through the corrugated holes 302. The corrugated hole 302 is used to weld the second layer of backrest spring 72, thus achieving rapid welding. For clamping, after clamping the first layer of backrest spring 72, the welding plate 301 rotates 180 degrees, and the operator passes through the corrugated hole 302 to clamp the backrest spring 72 via the spring clamping mechanism 5. This eliminates the need for manual rotation of the entire clamping fixture, improving processing efficiency. The two connecting shafts 303 are rotatably connected to the mounting base 210 and the second housing 211, respectively. The second gear ring 304 meshes with the second gear 306. During the rotation of the two welding plates 301, the balance of the entire rotating mechanism 2 is not affected. Both welding plates 301 are driven by an independent second motor 305, which facilitates the clamping and welding of the backrest frame 7. The top of the welding plate 301 is provided with multiple backrest springs 72, which are aligned with the corresponding corrugated holes 302. The tooling personnel can clamp the corresponding backrest springs 72 through the corrugated holes 302, and the welding robot 6 can weld the corresponding backrest springs 72 through the corrugated holes 302.

[0040] like Figures 1-8As shown, multiple frame clamping mechanisms 4 are installed on both support mechanisms 3. Each frame clamping mechanism 4 includes a support plate 401 fixedly connected to the top of the welding plate 301. A base 402 is fixedly connected to one top end of the support plate 401, and a lower clamping seat 403 is slidably connected within the base 402. A first cylinder 404 is fixedly installed on the bottom of the welding plate 301 near the lower clamping seat 403. A third support seat 405 is fixedly connected to the other top end of the support plate 401. A first connecting seat 406 is rotatably connected to the top of the third support seat 405. An upper clamping seat 407 is fixedly connected to one end of the first connecting seat 406. A second cylinder 408 is fixedly installed at the top center of the support plate 401. A second connecting seat 409 is rotatably connected to the top of the piston of the second cylinder 408. When clamping the backrest frame 7, the operator places the backrest frame 7 on multiple lower clamping seats 403, ensuring it is flush against their outer walls, and simultaneously activates multiple second cylinders 408, all of which contract via their pistons. Connecting seat 409 pulls first connecting seat 406, thereby causing upper clamping seat 407 to rotate, so that multiple upper clamping seats 407 fit precisely against the top of the outer wall of backrest frame 7, achieving clamping of backrest frame 7. After welding backrest frame 7 to multiple backrest springs 72, when removing backrest frame 7, multiple second cylinders 408 pistons push, simultaneously activating multiple first cylinders 404, all of which push lower clamping seat 403 through pistons, thereby pushing the welded backrest frame 7, thus... Multiple backrest springs 72 are separated from the spring clamping mechanism 5, making it easier for workers to remove the backrest frame 7. The top of the piston of the first cylinder 404 is fixedly connected to the bottom of the lower clamping seat 403. The second connecting seat 409 is rotatably connected to the first connecting seat 406. The upper clamping seat 407 and the lower clamping seat 403 clamp the outer wall of the backrest frame 7. When multiple lower clamping seats 403 and corresponding upper clamping seats 407 clamp the backrest frame 7 at the same time, the stability during welding is improved, thereby improving the welding accuracy.

[0041] like Figures 1-10As shown, multiple spring clamping mechanisms 5 are installed on the two support mechanisms 3. Each spring clamping mechanism 5 includes two F-shaped frames 501 fixedly connected to the top of the welding plate 301. W-shaped frames 502 are fixedly connected to the inner walls of both F-shaped frames 501. Multiple sets of connecting springs 503 are fixedly connected to the inner walls of both W-shaped frames 502. A clamping block 504 is fixedly connected to one end of each set of connecting springs 503. When clamping a layer of backrest springs 72, first align both ends of the layer of backrest springs 72 with the corresponding frame connecting sleeves 71. Then, forcefully squeeze the backrest springs 72, causing them to simultaneously squeeze multiple clamping blocks 504. The multiple clamping blocks 504 contract under the action of the connecting springs 503, pushing them to the middle position of the two clamping blocks 504. When the backrest frame 7 is removed, it is clamped by connecting spring 503. After the support mechanism 3 is flipped, the second backrest spring 72 is clamped in the same way. Multiple spring clamping mechanisms 5 clamp at the same time to improve clamping accuracy and prevent the backrest spring 72 from shifting during welding. It also clamps two backrest springs 72 at one time, which is convenient for subsequent welding of the two backrest springs 72. Multiple clamping blocks 504 are slidably connected to the corresponding W-shaped frame 502. Multiple clamping blocks 504 clamp the outer wall of the corresponding backrest spring 72. When the welded backrest frame 7 is removed, the entire backrest frame 7 is pushed upward by the lower clamping seat 403, thereby contacting multiple clamping blocks 504. Since the clamping edge of the clamping block 504 is inclined, it is convenient for the backrest spring 72 to be squeezed out and will not get stuck.

[0042] The working principle of this embodiment is as follows: When clamping the backrest frame 7, the operator places the backrest frame 7 on multiple lower clamping seats 403 and makes it fit against its outer wall. At the same time, multiple second cylinders 408 are activated, each retracting the second connecting seat 409 through the piston, thereby pulling the first connecting seat 406, which in turn drives the upper clamping seat 407 to rotate, so that the multiple upper clamping seats 407 fit precisely against the top of the outer wall of the backrest frame 7, thus clamping the backrest frame 7. When clamping a layer of backrest springs 72, firstly, both ends of the layer of backrest springs 72 are aligned with the corresponding frame connecting sleeves 71 (e.g., ...). Figure 11 At this point, the backrest spring 72 is squeezed again, causing it to simultaneously squeeze multiple clamping blocks 504. The multiple clamping blocks 504 contract under the action of the connecting spring 503. When the two clamping blocks 504 are pushed to the middle position, they are clamped by the connecting spring 503. Then, the second motor 305 is started, and the output shaft rotates to drive the second gear 306 to rotate, thereby driving the meshing second gear ring 304 to rotate, which in turn drives the connected second gear ring 304 to rotate, thereby driving the welding plate 301 to rotate. After rotating 180 degrees, the first layer of backrest spring 72 faces downward. The worker passes through the corrugated hole 302 and clamps the second layer of backrest spring 72 in the same way.

[0043] When the first layer of backrest spring 72 needs to be welded, the welding plate 301 remains horizontal and stationary, and the welding robot 6 performs the welding operation. When the second layer of backrest spring 72 is welded, the support mechanism 3 rotates 180 degrees, with the first layer of backrest spring 72 facing down and the second layer of backrest spring 72 facing up. The welding robot 6 can then weld the second layer of backrest spring 72 through the corrugated hole 302.

[0044] After welding is completed, the welded backrest frame 7 needs to be removed. At this time, the two support mechanisms 3 need to switch positions. The first motor 207 is started, and the output shaft rotates to drive the first gear 208 to rotate, which in turn drives the meshing first gear ring 206 to rotate, which in turn drives the connected rotating shaft 204 to rotate, which in turn drives the two support mechanisms 3 to rotate. The backrest frame 7 to be welded is rotated to a position close to the welding robot 6, and the already welded backrest frame 7 is rotated to the opposite position, realizing the position switch. When the backrest frame 7 needs to be removed, multiple second cylinders 408 piston push, driving multiple upper clamping seats 407 to rotate. At the same time, multiple first cylinders 404 are started, all of which push the lower clamping seat 403 through piston, thereby pushing the welded backrest frame 7. This causes the second layer of backrest spring 72 to enter the top clamping block 504 from the original clamping block 504, and then be squeezed out from the top clamping block 504, realizing rapid material removal.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A clamping device for welding the frame of an automobile seat, comprising a base plate (1), characterized in that: A rotating mechanism (2) is fixedly installed at the top center of the base plate (1). The rotating mechanism (2) includes a first support base (201) and a second support base (203) fixedly connected to the top of the base plate (1). A first housing (202) is fixedly connected to the top of the first support base (201). A rotating shaft (204) is rotatably connected between the first housing (202) and the second support base (203). A light-blocking plate (205) is fixedly connected to the center of the outer wall of the rotating shaft (204). A first gear ring (206) is fixedly connected to the front end of the outer wall of the rotating shaft (204). A first motor (207) is fixedly installed inside the first housing (202). A first gear (208) is fixedly connected to the outer wall of the output shaft of the first motor (207). (204) has connecting strips (209) fixedly connected to the front and rear ends of the outer wall. The two ends of the two connecting strips (209) are respectively fixedly connected to the mounting base (210) and the second housing (211). The rotating mechanism (2) is equipped with two support mechanisms (3). The support mechanism (3) includes a welding plate (301). The top of the welding plate (301) is provided with multiple corrugated holes (302). The front and rear ends of the welding plate (301) are fixedly connected to the connecting shaft (303). The front end of the outer wall of one of the connecting shafts (303) is fixedly connected to the second gear ring (304). The second housing (211) is fixedly installed with a second motor (305). The outer wall of the output shaft of the second motor (305) is fixedly connected to a second gear (306). Each of the two support mechanisms (3) is equipped with a plurality of skeleton clamping mechanisms (4). The skeleton clamping mechanism (4) includes a support plate (401) fixedly connected to the top of the welding plate (301). A base (402) is fixedly connected to one end of the top of the support plate (401). A lower clamping seat (403) is slidably connected inside the base (402). A first cylinder (404) is fixedly installed on the bottom of the welding plate (301) near the lower clamping seat (403). The support plate (401) A third support seat (405) is fixedly connected to the other end of the top. A first connecting seat (406) is rotatably connected to the top of the third support seat (405). An upper clamping seat (407) is fixedly connected to one end of the first connecting seat (406). A second cylinder (408) is fixedly installed at the top center of the support plate (401). A second connecting seat (409) is rotatably connected to the top of the piston of the second cylinder (408). Multiple spring clamping mechanisms (5) are installed on the two support mechanisms (3).

2. The clamping device for welding the frame of an automobile seat according to claim 1, characterized in that, The first gear ring (206) meshes with the first gear (208) and both are located inside the first housing (202).

3. The clamping device for welding the frame of an automobile seat according to claim 1, characterized in that, The two connecting shafts (303) are rotatably connected to the mounting base (210) and the second housing (211) respectively, and the second gear ring (304) meshes with the second gear (306).

4. The clamping device for welding the frame of an automotive seat according to claim 1, characterized in that, The top of the welding plate (301) is provided with a plurality of backrest springs (72), and the plurality of backrest springs (72) are aligned with the corresponding corrugated holes (302).

5. A clamping device for welding the frame of an automotive seat according to claim 1, characterized in that, The top of the piston of the first cylinder (404) is fixedly connected to the bottom of the lower clamping seat (403), the second connecting seat (409) is rotatably connected to the first connecting seat (406), and the upper clamping seat (407) and the lower clamping seat (403) clamp the outer wall of the backrest frame (7).

6. A clamping device for welding the frame of an automotive seat according to claim 4, characterized in that, The spring clamping mechanism (5) includes two F-shaped frames (501) fixedly connected to the top of the welding plate (301). The inner walls of the two F-shaped frames (501) are fixedly connected to W-shaped frames (502). The inner walls of the two W-shaped frames (502) are fixedly connected to multiple sets of connecting springs (503). One end of each set of connecting springs (503) is fixedly connected to a clamping block (504).

7. A clamping device for welding the frame of an automotive seat according to claim 6, characterized in that, The plurality of clamping blocks (504) are slidably connected to the corresponding W-shaped frame (502), and the plurality of clamping blocks (504) clamp the outer wall of the corresponding backrest spring (72).

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