Automobile battery shell welding clamp side clamping device

Abstract

The application discloses a kind of automobile battery shell welding clamps side clamping devices, it is related to new energy automobile field, including base, the side of the base is provided with two slide rails, the upper end of two slide rails is slidably connected with transmission device, the upper end of the transmission device is fixedly installed with battery shell main body, the upper end of the base is fixedly installed with connecting structure, two clamping structures are fixedly installed in the inside of the connecting structure, the inside of the clamping structure is provided with clamping structure, the inside of the connecting structure is provided with support structure.In the application, by the setting of clamping structure, the pressure that battery shell main body 4 is gradually increased, prevent excessive extrusion and make battery shell main body produce deformation, complete the clamping of battery shell main body, so that transmission device can take down the next battery shell main body to be welded and do good preparation work, save a lot of time, improve welding efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy vehicles, in particular to a side clamping device of a vehicle battery shell welding clamp. BACKGROUND

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as power sources and integrate advanced technologies in vehicle power control and driving to form vehicles with advanced technical principles and new technologies and structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc. In the production process of new energy vehicles, one step involves clamping the battery shell and welding the battery shell.

[0003] In the prior art, such as Chinese Patent No. CN214054181U, "a welding clamp for a new energy vehicle battery shell edge beam", which includes a chassis, a welding workbench, a reference element positioning mechanism, a reference element clamping mechanism and a welding element limiting and clamping mechanism. The chassis is a rectangular frame structure placed on a horizontal surface. The welding workbench is installed on the chassis, and a horizontal support plate is arranged in the middle part of the chassis. The horizontal support plate is equipped with a reference element positioning mechanism. The welding workbench has a reference element positioning mechanism avoiding hole in the middle, and the reference element clamping mechanism and the welding element limiting and clamping mechanism are arranged on the left and right sides of the welding workbench.

[0004] However, in the prior art, before welding, the battery shell needs to be transported to the designated position by a transmission device, and then clamped by the transmission device, and then welded. During welding, the transmission device needs to stop at the current position to wait for the welding to be completed, and cannot make the next piece of battery shell to be welded to the designated area and prepare for welding, thus a lot of time is wasted, and the welding efficiency is reduced. SUMMARY

[0005] The present application aims to provide a side clamping device of a vehicle battery shell welding clamp to solve the problem that the battery shell needs to be transported to the designated position by a transmission device before welding, and then clamped by the transmission device, and then welded. During welding, the transmission device needs to stop at the current position to wait for the welding to be completed, and cannot make the next piece of battery shell to be welded to the designated area and prepare for welding, thus a lot of time is wasted, and the welding efficiency is reduced.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a side clamping device of an automobile battery shell welding clamp, comprising a base, one side of the base is provided with two slide rails, the upper end of the two slide rails is slidably connected with a transmission device, the upper end of the transmission device is fixedly installed with a battery shell body, the upper end of the base is fixedly installed with a connecting structure, the inside of the connecting structure is fixedly installed with two clamping structures, the inside of the clamping structure is provided with a clamping structure, the inside of the connecting structure is provided with a supporting structure, the lower end of the supporting structure is fixed with the upper end of the base, the upper end of the base is fixedly installed with a fixed cover, the two clamping structures are respectively located on both sides of the battery shell body, the clamping structure comprises a fixed plate, one side of the fixed plate is fixedly installed with four connecting rods two, one side of the connecting rod two is provided with a circular groove, the inside of the circular groove is fixedly installed with a spring two, the other end of the spring two is fixedly installed with a sliding rod two, one end of the four sliding rods two is fixedly installed with a connecting plate one, one side of the connecting plate one is provided with two grooves, the inside of the groove is fixedly installed with two springs one, one side of the four springs one is respectively fixedly installed with two connecting plates two, one side of the connecting plate two is provided with a gear slot one, one side of the two connecting plates two is fixedly installed with a side clamping plate, one side of the connecting plate one is welded with a lower clamping plate.

[0007] Preferably, the clamping structure comprises an upper clamping plate, the upper end of the upper clamping plate is welded with a connecting block, the upper end of the lower clamping plate is welded with two supporting rods two, one side of the supporting rod two is provided with a sliding groove, the inside of the sliding groove is slidably connected with a sliding rod three, the lower end of the sliding rod three is fixedly installed with a sliding block two, the lower end of the sliding block two is fixedly installed with a spring three, the outside of the sliding block two is slidably connected with the inside of the sliding groove, the two sliding blocks two are rotatably connected with a rotating rod, the outside of the rotating rod is fixedly installed with a gear two, one side of the fixed plate is fixedly installed with a trapezoidal block, one end of the trapezoidal block is provided with a gear slot two.

[0008] Preferably, the supporting structure comprises a connecting rod three, the inside of the connecting rod three is slidably connected with two sliding rods four, the lower end of the connecting rod three is fixedly installed with a hydraulic assembly, the lower end of the hydraulic assembly is fixed with the upper end of the base.

[0009] Preferably, the connecting structure comprises a driving device, the output end of the driving device is fixedly installed with a gear one, the outside of the gear one is engaged with two racks, one end of the rack is fixedly installed with a sliding block one, one end of the sliding block one is welded with a supporting rod one, the inside of the supporting rod one is slidably connected with a sliding rod one, one side of the sliding rod one is welded with a connecting rod one.

[0010] Preferably, one side of the connecting plate one is provided with a through hole, the trapezoidal block is located in the inside of the through hole.

[0011] Preferably, the outer side of the second sliding rod is rotationally connected with the inner side of the circular groove, and the upper end of the lower clamping plate is slidingly connected with the lower end of the side clamping plate.

[0012] Preferably, the upper end of each of the two third sliding rods is fixed to the lower end of the connecting block, and each of the two third springs is fixed to the upper end of the lower clamping plate.

[0013] Preferably, the inner side of each of the two first tooth grooves is engaged with the outer side of the second gear, and the inner side of the second tooth groove is engaged with the outer side of the second gear.

[0014] Preferably, the lower end of the driving device is fixed to the upper end of the base, and the lower end of each of the two first sliding blocks is slidingly connected with the upper end of the base.

[0015] Preferably, one side of the first connecting rod is fixed to one side of the fixed plate, and one end of each of the two fourth sliding rods is fixed to one side of each of the two first connecting rods.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1、In the present application, the clamping structure is provided, so that the pressure on the battery shell body 4 is gradually increased, preventing excessive extrusion and deformation of the battery shell body, completing the clamping of the battery shell body, allowing the transmission device to remove the next battery shell body to be welded and prepare for work, saving a lot of time and improving the welding efficiency.

[0018] 2、In the present application, the clamping structure is provided, so that when the first connecting plate approaches the side clamping plate, the first connecting plate drives the lower clamping plate to approach the battery shell body, and then drives the two second supporting rods to approach the battery shell body, and the two second supporting rods drive the two second sliding blocks to approach the battery shell body, and then drive the rotating rod and the second gear to approach the battery shell body, so that the second gear is no longer engaged with the first tooth groove, and then when the side of the second connecting plate contacts the side of the first connecting plate, the fixed plate continues to approach the battery shell body, drives the trapezoidal block to approach the battery shell body, and then drives the second gear to move downward and rotate counterclockwise, during which the second gear continuously engages with the second tooth groove, and the second gear drives the rotating rod and the two second sliding blocks to move downward, thereby driving the two third sliding rods to move downward, so that the two third sliding rods drive the connecting block and the upper clamping plate to move downward and clamp the battery shell body, thereby improving the stability of clamping the battery shell body.

[0019] 3、The present application, through the setting of the support structure, makes the hydraulic assembly elongate after clamping is completed, and then drives the connecting rod three and the two sliding rods four to move upward, thereby driving the two connecting rods one to move upward, and the two connecting rods one drive the two clamping structures and the two clamping structures to move upward, and then drive the battery shell main body to move upward, thereby facilitating the welding operation of the welding device on the battery shell main body. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective view of the side clamping device of the automobile battery shell welding clamp of the present application;

[0021] Figure 2 It is a partial structure diagram of the side clamping device of the automobile battery shell welding clamp of the present application;

[0022] Figure 3 It is a perspective view of the side clamping device of the automobile battery shell welding clamp of the present application; Figure 2 It is an enlarged view of A in the middle;

[0023] Figure 4 It is a partial structure top view of the side clamping device of the automobile battery shell welding clamp of the present application;

[0024] Figure 5 It is a schematic diagram of the clamping structure and the clamping structure in the side clamping device of the automobile battery shell welding clamp of the present application;

[0025] Figure 6 It is a perspective view of the clamping structure in the side clamping device of the automobile battery shell welding clamp of the present application;

[0026] Figure 7 It is a sectional structure diagram of the connecting rod two in the side clamping device of the automobile battery shell welding clamp of the present application;

[0027] Figure 8 It is an explosion schematic diagram of the clamping structure and the clamping structure in the side clamping device of the automobile battery shell welding clamp of the present application;

[0028] Figure 9 It is a sectional structure diagram of the clamping structure and the clamping structure in the side clamping device of the automobile battery shell welding clamp of the present application;

[0029] Figure 10 It is an enlarged structure schematic diagram of B in the middle. Figure 9

[0030] ​In the figure: 1, base; 2, slide rail; 3, transmission; 4, battery shell main body; 5, connecting structure; 501, driving device; 502, gear one; 503, rack; 504, sliding block one; 505, support rod one; 506, sliding rod one; 507, connecting rod one; 6, clamping structure; 601, fixed plate; 602, connecting rod two; 603, sliding rod two; 604, connecting plate one; 605, through hole; 606, groove; 607, spring one; 608, connecting plate two; 609, gear slot one; 610, side clamping plate; 611, lower clamping plate; 612, round groove; 613, spring two; 7, clamping structure; 701, upper clamping plate; 702, connecting block; 703, support rod two; 704, sliding groove; 705, sliding rod three; 706, sliding block two; 707, spring three; 708, rotating rod; 709, gear two; 710, trapezoidal block; 711, gear slot two; 8, support structure; 801, connecting rod three; 802, sliding rod four; 803, hydraulic assembly; 9, fixed cover. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. Embodiment one

[0032] Reference Figures 1-10As shown: a car battery shell welding clamp side clamping device, including the base 1, the side of the base 1 is provided with two slide rails 2, the upper end of the two slide rails 2 is slidably connected with transmission device 3, the upper end of the transmission device 3 is fixedly installed with battery shell body 4, the upper end of the base 1 is fixedly installed with connecting structure 5, the inside of the connecting structure 5 is fixedly installed with two clamping structures 6, the inside of the clamping structure 6 is provided with clamping structure 7, the inside of the connecting structure 5 is provided with support structure 8, the lower end of the support structure 8 is fixed with the upper end of the base 1, the upper end of the base 1 is fixedly installed with fixed cover 9, two clamping structures 6 are located on both sides of the battery shell body 4 respectively, the clamping structure 6 includes a fixed plate 601, four connecting rods two 602 are fixedly installed on one side of the fixed plate 601, a circular groove 612 is formed on one side of the connecting rod two 602, a spring two 613 is fixedly installed in the circular groove 612, a sliding rod two 603 is fixedly installed at the other end of the spring two 613, a connecting plate one 604 is fixedly installed at one end of the four sliding rods two 603, two recesses 606 are formed on one side of the connecting plate one 604, two springs one 607 are fixedly installed in the recesses 606, two connecting plates two 608 are fixedly installed on one side of the four springs one 607 respectively, a gear slot one 609 is formed on one side of the connecting plate two 608, a side clamping plate 610 is fixedly installed on one side of the two connecting plates two 608, a lower clamping plate 611 is welded on one side of the connecting plate one 604, the connecting structure 5 includes a driving device 501, a gear one 502 is fixedly installed at the output end of the driving device 501, two racks 503 are engaged on the outside of the gear one 502, a sliding block one 504 is fixedly installed at one end of the rack 503, a support rod one 505 is welded at one end of the sliding block one 504, a sliding rod one 506 is slidably connected in the support rod one 505, a connecting rod one 507 is welded on one side of the sliding rod one 506, the outside of the sliding rod two 603 is rotatably connected with the inside of the circular groove 612, the upper end of the lower clamping plate 611 is slidably connected with the lower end of the side clamping plate 610, the lower end of the driving device 501 is fixed with the upper end of the base 1, the lower end of the two sliding blocks one 504 is slidably connected with the upper end of the base 1.

[0033] In this embodiment, after the transmission device 3 moves the battery shell body 4 to the specified position, the driving device 501 can be started, so that the output end of the driving device 501 drives gear one 502 to rotate clockwise, gear one 502 drives the left rack 503 to move to the right, gear one 502 also drives the right rack 503 to move to the left, thereby driving the two sliding blocks one 504 to approach each other, the two sliding blocks one 504 drive the two supporting rods one 505 and the two sliding rods one 506 to approach each other, thereby driving the two connecting rods one 507 to approach each other, thereby driving the two clamping structures 6 to approach each other and clamp the battery shell body 4. After the two clamping structures 6 approach each other until one end of the side clamping plate 610 contacts the two sides of the battery shell body 4 respectively, the two connecting rods one 507 continue to drive the two fixed plates 601 to continue to approach, thereby increasing the pressure on the battery shell body 4, thereby improving the stability of clamping. The side clamping plate 610 cannot continue to move, so that the fixed plate 601 drives the four connecting rods two 602 and the four sliding rods two 603 to approach the battery shell body 4, thereby driving the connecting plate one 604 and the side clamping plate 610 to approach the battery shell body 4, so that the side clamping plate 610 and the connecting plate two 608 slide on the lower clamping plate 611 and press the four springs one 607, until one side of the connecting plate two 608 contacts one side of the connecting plate one 604. After that, due to the fixation of the position of the battery shell body 4, the lower clamping plate 611 and the connecting plate one 604 are fixed at the current position with the side clamping plate 610, thereby pressing the four sliding rods two 603, so that the four sliding rods two 603 press the springs two 613, thereby gradually increasing the pressure on the battery shell body 4, preventing excessive compression to deform the battery shell body 4. The clamping of the battery shell body 4 is completed, so that the transmission device 3 can take down the next battery shell body 4 to be welded and prepare for work, saving a lot of time and improving the welding efficiency. Embodiment two

[0034] Figure 5 、 Figure 8 、 Figure 9 and Figure 10As shown, the clamping structure 7 comprises an upper clamping plate 701, the upper end of the upper clamping plate 701 is welded with a connecting block 702, the upper end of the lower clamping plate 611 is welded with two support rods two 703, one side of the support rod two 703 is provided with a sliding groove 704, the inside of the sliding groove 704 is slidably connected with a sliding rod three 705, the lower end of the sliding rod three 705 is fixedly installed with a sliding block two 706, the lower end of the sliding block two 706 is fixedly installed with a spring three 707, the outside of the sliding block two 706 is slidably connected with the inside of the sliding groove 704, two sliding blocks two 706 are rotatably connected with a rotating rod 708, the outside of the rotating rod 708 is fixedly installed with a gear two 709, one side of the fixed plate 601 is fixedly installed with a trapezoidal block 710, one end of the trapezoidal block 710 is provided with a gear slot two 711, one side of the connecting plate one 604 is provided with a through hole 605, the trapezoidal block 710 is located in the inside of the through hole 605, the upper end of the two sliding rod three 705 is fixed with the lower end of the connecting block 702, the two spring three 707 are fixed with the upper end of the lower clamping plate 611, the inside of the two gear slot one 609 is engaged with the outside of the gear two 709, the inside of the gear slot two 711 is engaged with the outside of the gear two 709.

[0035] In the embodiment, when the connecting plate one 604 approaches the side clamping plate 610, the connecting plate one 604 drives the lower clamping plate 611 to approach the battery shell body 4, and then drives the two support rods two 703 to approach the battery shell body 4, and then drives the two sliding blocks two 706 to approach the battery shell body 4, and then drives the rotating rod 708 and the gear two 709 to approach the battery shell body 4, so that the gear two 709 is no longer engaged with the gear slot one 609, and then when one side of the connecting plate two 608 contacts one side of the connecting plate one 604, the fixed plate 601 continues to approach the battery shell body 4, drives the trapezoidal block 710 to approach the battery shell body 4, and then drives the gear two 709 to move downward and rotate counterclockwise, during which the gear two 709 is continuously engaged with the gear slot two 711, and the gear two 709 drives the rotating rod 708 and the two sliding blocks two 706 to move downward, thereby driving the two sliding rod three 705 to move downward, so that the two sliding rod three 705 drives the connecting block 702 and the upper clamping plate 701 to move downward and clamp the battery shell body 4, thereby improving the stability of clamping the battery shell body 4. Embodiment three

[0036] According to Figure 1 and Figure 2As shown, the support structure 8 comprises a connecting rod three 801, two sliding rods four 802 are slidably connected inside the connecting rod three 801, a hydraulic assembly 803 is fixedly installed at the lower end of the connecting rod three 801, the lower end of the hydraulic assembly 803 is fixed with the upper end of the base 1, one side of the connecting rod one 507 is fixed with one side of the fixed plate 601, and one end of the two sliding rods four 802 is respectively fixed with one side of the two connecting rods one 507.

[0037] In this embodiment, after clamping is completed, the hydraulic assembly 803 is elongated, thereby driving the connecting rod three 801 and the two sliding rods four 802 to move upward, so as to drive the two connecting rods one 507 to move upward, and the two connecting rods one 507 drive the two clamping structures 6 and the two clamping structures 7 to move upward, thereby driving the battery shell body 4 to move upward, so as to facilitate the welding operation of the welding device on the battery shell body 4.

[0038] The method for using the device and the working principle: after the transmission device 3 moves the battery shell body 4 to the designated position, the driving device 501 can be started, so that the output end of the driving device 501 drives gear one 502 to rotate clockwise, gear one 502 drives the left rack 503 to move right, gear one 502 also drives the right rack 503 to move left, and then drives the two sliders one 504 to move close to each other, the two sliders one 504 drives the two support rods one 505 and the two sliding rods one 506 to move close to each other, and then drives the two connecting rods one 507 to move close to each other, so as to drive the two clamping structures 6 to move close to each other and clamp the battery shell body 4, when the two clamping structures 6 move close to each other, until one end of the side clamping plate 610 contacts the two sides of the battery shell body 4 respectively, the two connecting rods one 507 will continue to drive the two fixed plates 601 to move closer, so as to increase the pressure on the battery shell body 4, and then improve the stability of clamping, while the side clamping plate 610 cannot continue to move, so that the fixed plate 601 drives the four connecting rods two 602 and the four sliding rods two 603 to move close to the battery shell body 4, and then drives the connecting plate one 604 and the side clamping plate 610 to move close to the battery shell body 4, so that the side clamping plate 610 and the connecting plate two 608 slide on the lower clamping plate 611, and press the four springs one 607, when the connecting plate one 604 moves close to the side clamping plate 610, the connecting plate one 604 drives the lower clamping plate 611 to move close to the battery shell body 4, and then drives the two support rods two 703 to move close to the battery shell body 4, the two support rods two 703 drive the two sliders two 706 to move close to the battery shell body 4, and then drive the rotating rod 708 and the gear two 709 to move close to the battery shell body 4, so that the gear two 709 is no longer engaged with the gear slot one 609, when one side of the connecting plate two 608 contacts one side of the connecting plate one 604, due to the fixed position of the battery shell body 4, the lower clamping plate 611 and the connecting plate one 604 are fixed at the current position with the side clamping plate 610, so as to press the four sliding rods two 603, so that the four sliding rods two 603 press the springs two 613, in the process that the fixed plate 601 continues to move close to the battery shell body 4, the trapezoidal block 710 is driven to move close to the battery shell body 4, and then the gear two 709 moves downward and rotates counterclockwise, during which the gear two 709 is continuously engaged with the gear slot two 711, and the gear two 709 drives the rotating rod 708 and the two sliders two 706 to move downward, so as to drive the two sliding rods three 705 to move downward, so that the two sliding rods three 705 drive the connecting block 702 and the upper clamping plate 701 to move downward and clamp the battery shell body 4, so as to improve the stability of clamping the battery shell body 4, and then the pressure on the battery shell body 4 is gradually increased, so as to prevent excessive extrusion and deformation of the battery shell body 4, complete the clamping of the battery shell body 4, so that the transmission device 3 can take down the next battery shell body 4 to be welded and prepare for work, save a lot of time, and improve the welding efficiency,After the clamping is completed, the hydraulic assembly 803 can be elongated, thereby driving the connecting rod three 801 and the two sliding rods four 802 to move upward, thereby driving the two connecting rods one 507 to move upward, and the two connecting rods one 507 drive the two clamping structures 6 and the two clamping structures 7 to move upward, thereby driving the battery shell main body 4 to move upward, thereby facilitating the welding operation of the welding device on the battery shell main body 4.

[0039] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A side clamping device for a welding fixture for an automotive battery casing, comprising a base (1), characterized in that: Two slide rails (2) are provided on one side of the base (1). A transmission device (3) is slidably connected to the upper end of the two slide rails (2). A battery shell body (4) is fixedly installed on the upper end of the transmission device (3). A connecting structure (5) is fixedly installed on the upper end of the base (1). Two clamping structures (6) are fixedly installed inside the connecting structure (5). A clamping structure (7) is provided inside the clamping structure (6). A support structure (8) is provided inside the connecting structure (5). The lower end of the support structure (8) is fixed to the upper end of the base (1). A fixing cover (9) is fixedly installed on the upper end of the base (1). The two clamping structures (6) are located on both sides of the battery shell body (4). The clamping structure (6) includes a fixing plate (601). Four connecting rods are fixedly installed on one side of the fixing plate (601). Second (602), a circular groove (612) is provided on one side of the connecting rod second (602), a spring second (613) is fixedly installed inside the circular groove (612), a sliding rod second (603) is fixedly installed at the other end of the spring second (613), a connecting plate first (604) is fixedly installed at one end of the four sliding rods second (603), two grooves (606) are provided on one side of the connecting plate first (604), two springs first (607) are fixedly installed inside the grooves (606), two connecting plates second (608) are fixedly installed on one side of the four springs first (607), a toothed groove first (609) is provided on one side of the two connecting plates second (608), a side clamping plate (610) is fixedly installed on one side of the two connecting plates second (608), and a lower clamping plate (611) is welded to one side of the connecting plate first (604). The clamping structure (7) includes an upper clamping plate (701), with a connecting block (702) welded to the upper end of the upper clamping plate (701). Two support rods (703) are welded to the upper end of the lower clamping plate (611). A sliding groove (704) is provided on one side of the support rod (703). A sliding rod (705) is slidably connected inside the sliding groove (704). A slider (706) is fixedly installed at the lower end of the sliding rod (705). A spring (707) is fixedly installed at the lower end of the slider (706). The outer side of the slider (706) is slidably connected to the inside of the sliding groove (704). A rotating rod (708) is rotatably connected between the two sliders (706). A gear (709) is fixedly installed on the outer side of the rotating rod (708). A trapezoidal block (710) is fixedly installed on one side of the fixing plate (601). (710) has a toothed groove (711) at one end; the connecting structure (5) includes a driving device (501), a gear (502) is fixedly installed at the output end of the driving device (501), two racks (503) mesh on the outer side of the gear (502), a slider (504) is fixedly installed at one end of the rack (503), a support rod (505) is welded to one end of the slider (504), a sliding rod (506) is slidably connected inside the support rod (505), and a connecting rod (507) is welded to one side of the sliding rod (506); the upper ends of the two sliding rods (705) are fixed to the lower end of the connecting block (702); the inside of the toothed groove (711) meshes with the outer side of the gear (709); one side of the connecting rod (507) is fixed to one side of the fixing plate (601).

2. The side clamping device for a welding fixture for an automotive battery casing according to claim 1, characterized in that: The support structure (8) includes a connecting rod three (801), which has two sliding rods four (802) slidably connected inside. A hydraulic component (803) is fixedly installed at the lower end of the connecting rod three (801), and the lower end of the hydraulic component (803) is fixed to the upper end of the base (1).

3. The side clamping device for a welding fixture for an automotive battery casing according to claim 2, characterized in that: A through hole (605) is provided on one side of the connecting plate (604), and the trapezoidal block (710) is located inside the through hole (605).

4. The side clamping device for a welding fixture for an automotive battery casing according to claim 1, characterized in that: The outer side of the sliding rod (603) is rotatably connected to the inside of the circular groove (612), and the upper end of the lower clamping plate (611) is slidably connected to the lower end of the side clamping plate (610).

5. The side clamping device for a welding fixture for an automotive battery casing according to claim 1, characterized in that: Both of the springs (707) are fixed to the upper end of the lower clamping plate (611).

6. The side clamping device for a welding fixture for an automotive battery casing according to claim 1, characterized in that: The interior of both of the first tooth grooves (609) meshes with the outer side of the second gear (709).

7. The side clamping device for a welding fixture for an automotive battery casing according to claim 1, characterized in that: The lower end of the driving device (501) is fixed to the upper end of the base (1), and the lower ends of the two sliders (504) are slidably connected to the upper end of the base (1).

8. The side clamping device for a welding fixture for an automotive battery casing according to claim 2, characterized in that: One end of each of the two sliding rods (802) is fixed to one side of each of the two connecting rods (507).

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