Electric automobile back panel welding device

Abstract

The application provides a kind of electric automobile back panel welding device, it is related to electric automobile back panel welding field.The application includes conveyor belt, the upper surface of the conveyor belt is fixedly connected with frame by mounting bracket, one side of the conveyor belt is provided with conveying equipment, the side of the conveyor belt close to conveying equipment is provided with mechanical arm, the output end of the mechanical arm is provided with clamping device, the inside of the clamping device clamps rear panel.By setting clamping device to grab rear panel while supporting device is set, a certain supporting force is provided when welding, reducing the gap between welding, by setting electric welding device, the welding point position is welded and polished simultaneously after welding, improve the welding efficiency, by setting the lower supporting assembly, it is convenient to recycle side supporting assembly, and then it is convenient to grab the next rear panel, convenient operation, improve the work efficiency.

Description

Technical Field

[0001] This invention relates to the field of welding rear panels of electric vehicles, specifically to a welding device for the rear panels of electric vehicles. Background Technology

[0002] The rear bulkhead of an electric vehicle (EV) is a structural component located at the rear of the car body. It typically supports the vehicle's frame and provides protection for passengers. With advancements in EV manufacturing processes, many EV rear bulkheads utilize a modular design. This simplifies production, installation, and maintenance, reducing manufacturing costs and time. In general, the EV rear bulkhead not only fulfills the functions of traditional body components but also needs to consider specific requirements such as battery protection, collision safety, and lightweighting. As EV technology continues to develop, the design and materials of the rear bulkhead are also evolving to meet increasingly stringent safety and environmental standards.

[0003] In the current automobile manufacturing process, the welding of the rear panel is carried out by moving the rear panel to the position to be welded by a robotic arm, and then welding is performed. However, gaps may easily exist between the rear panel and the car position when the robotic arm is placed at the corresponding position, which may lead to insufficient strength of the weld and unstable welding. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a welding device for the rear panel of an electric vehicle, which solves the problem of gaps existing at the connection between the rear panel and the vehicle during welding.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a welding device for the rear panel of an electric vehicle, comprising a conveyor belt, a vehicle frame fixedly connected to the upper surface of the conveyor belt via a mounting bracket, a conveying device on one side of the conveyor belt, a robotic arm on the side of the conveyor belt near the conveying device, a gripping device at the output end of the robotic arm, a rear panel gripped inside the gripping device, welding devices on both sides of the gripping device, and a support device on the gripping device in the direction of the conveyor belt's movement. The gripping device includes a movable block, a first electric push rod, a sliding block, a gripping frame, a second electric push rod, and a first gripping head. The movable block is fixedly connected to the output end of the robotic arm. The first electric push rod is fixedly connected to the inner surface of the movable block. The sliding block is fixedly connected to the output end of the first electric push rod and slidably connected to the inner surface of the movable block. Two gripping frames are provided and fixedly connected to both sides of the sliding block at its end. Two second electric push rods are provided on the gripping frame and vertically distributed and fixedly connected to the inner surface of the gripping frame. The first gripping head is fixedly connected to the output end of the second electric push rod. The support device includes a limiting block, two side support assemblies, a lower support assembly, a motor, a worm gear, a worm wheel, a first gear, an upper gear plate, a lower gear plate, and a second gear. The limiting block is fixedly connected to the vertical rod of the clamping frame and is located between the rear of the vehicle frame and the rear panel. The upper end of the side support assembly is movably connected to the inner surface of the limiting block. The lower support assembly is movably connected to the inner surface of the limiting block near the lower end. The motor is fixedly connected to the inner surface of the limiting block, and the worm gear is fixedly connected to the output end of the motor. The side support assembly includes a first support rod, a second support rod, a second gripping head, a spring, a sliding rod, a fixing pin, and a torsion spring. The first support rod is rotatably connected to the inner surface of the limiting block via a pin near the rear panel. The second gear is fixedly connected to the other side of the first support rod and located at the pin position. The fixing pin is fixedly connected to the side surface of the second support rod. The lower end of the second support rod is rotatably connected to the lower end of the first support rod via the fixing pin. The torsion spring is sleeved on the side surface of the fixing pin, and its two ends are respectively connected to the opposing side surfaces between the first and second support rods. The second gripping head is fixedly connected to one end of the sliding rod, and the other end of the sliding rod is slidably connected to the inner surface of the limiting block. The spring is sleeved on the side surface of the sliding rod, and its two ends are respectively fixedly connected to the opposing inner surfaces between the second gripping head and the limiting block. The worm gear is rotatably connected to the inner surface of the limiting block and meshes with the worm. The first gear is fixedly connected to the worm gear. The lower surface of the upper gear plate and the upper surface of the lower gear plate mesh with the upper and lower sides of the first gear, respectively. The upper surfaces of the upper and lower gear plates at the ends mesh with the lower surfaces of two second gears, respectively. The second gears are located on the upper side surface of the side support assembly.

[0006] Preferably, the welding device includes a third electric push rod, a sliding plate, a connecting block, a side fastening plate, a lower fastening plate, and a welding assembly. The third electric push rod is fixedly connected to the inner surface of the movable block. The middle position of the sliding plate is fixedly connected to the output end of the third electric push rod. The sliding plate is slidably connected to the surface of a protruding slide rod on the clamping frame. The connecting block is fixedly connected to one side surface of the sliding plate. The side fastening plate is fixedly connected to the side surface of the connecting block. The welding assembly is disposed on the sliding groove surface inside the side fastening plate. The two ends of the lower fastening plate are fixedly connected to the opposite side of the two side fastening plates and near the lower end.

[0007] Preferably, the welding assembly includes a first moving block, an electric roller, a fourth electric push rod, a welding gun, an elastic connecting column, a second moving block, a fifth electric push rod, a grinder, and a sliding fixed block. The electric roller is provided in multiple portions and is respectively fixedly connected to the side surfaces of the first moving block and the second moving block. The first moving block and the second moving block are slidably connected to the inner track of the side fastening plate through the electric roller. The first moving block and the second moving block are fixedly connected to each other through the elastic connecting column.

[0008] Preferably, the fourth electric push rod is fixedly connected to the inner crossbar of the first moving block, the sliding fixing block is fixedly connected to the output end of the fourth electric push rod at the position of the fourth electric push rod, the sliding fixing block is slidably connected to the inner surface of the first moving block through two side slides, the welding gun is fixedly connected to the inner surface of the sliding fixing block, the fifth electric push rod is fixedly connected to the inner connecting plate surface of the second moving block, and the grinder is fixedly connected to the output end of the fifth electric push rod.

[0009] Preferably, the lower support assembly includes a sixth electric push rod, a third support rod, a sliding support block, and a sliding roller. The lower end of the sliding support block is fixedly connected to the upper surface of the third support rod. The sixth electric push rod is fixedly connected to the inner surface of the limiting block. The middle position of the upper surface of the third support rod is fixedly connected to the output end of the sixth electric push rod. The sliding roller is rotatably connected to the upper end of the sliding support block and to the inner surface of one side near the side support assembly. The third support rod is slidably connected to the lower side of the second gear through the sliding support block.

[0010] (III) Beneficial Effects This invention provides a welding device for the rear panel of an electric vehicle. It has the following advantages: 1. By setting up a clamping device to grab the rear panel, and setting up a support device, a certain support force is provided during welding, thereby reducing the gap between welds.

[0011] 2. By using an electric welding device to simultaneously grind the weld points after welding, welding efficiency is improved.

[0012] 3. The lower support component facilitates the retraction of the side support component, making it easier to grab the next rear panel, which is convenient for operation and improves work efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first overall structure of a welding device for the rear panel of an electric vehicle proposed in this invention. Figure 2 This is a schematic diagram of the overall second structure of a welding device for the rear panel of an electric vehicle proposed in this invention. Figure 3 This is a schematic diagram of the first part of the structure of a welding device for the rear panel of an electric vehicle proposed in this invention. Figure 4 This is a schematic diagram of the clamping device structure of a welding device for the rear panel of an electric vehicle proposed in this invention. Figure 5 This is a schematic diagram of the second part of the structure of a welding device for the rear panel of an electric vehicle proposed in this invention. Figure 6 This is a schematic diagram of the welding device structure of an electric vehicle rear panel welding device proposed in this invention. Figure 7 This is a schematic diagram of the welding device portion of an electric vehicle rear panel welding device proposed in this invention. Figure 8 This is a schematic diagram of the welding assembly structure of a welding device for the rear panel of an electric vehicle proposed in this invention. Figure 9 This is a schematic diagram of the internal structure of the welding assembly of a welding device for the rear panel of an electric vehicle proposed in this invention. Figure 10 This is a schematic diagram of the second part of the structure of a welding device for the rear panel of an electric vehicle proposed in this invention. Figure 11 This is a schematic diagram of the support device structure of a welding device for the rear panel of an electric vehicle proposed in this invention. Figure 12 This is a schematic diagram of the lower support assembly structure of a welding device for the rear panel of an electric vehicle proposed in this invention. Figure 13 For the present invention Figure 12 Enlarged view of part A in the image; Figure 14 This is a schematic diagram of the first structure of the side support assembly of a welding device for the rear panel of an electric vehicle proposed in this invention. Figure 15 This is a schematic diagram of the second structure of the side support assembly of a welding device for the rear panel of an electric vehicle proposed in this invention.

[0014] Among them, 1. Conveyor belt; 2. Robotic arm; 3. Conveying equipment; 4. Frame; 5. Gripping device; 501. Movable block; 502. First electric push rod; 503. Sliding block; 504. Gripping frame; 505. Second electric push rod; 506. First gripping head; 6. Welding device; 601. Third electric push rod; 602. Sliding plate; 603. Connecting block; 604. Side fastening plate; 605. Lower fastening plate; 606. Welding assembly; 60601. First moving block; 60602. Electric roller; 60603. Fourth electric push rod; 60604. Welding gun; 60605. Elastic connecting column; 60606. Second moving block; 60607. Fifth electric push rod; 60 608. Grinding machine; 60609. Sliding fixing block; 7. Rear panel; 8. Support device; 801. Limiting block; 802. Side support assembly; 80201. First support rod; 80202. Second support rod; 80203. Second clamping head; 80204. Spring; 80205. Sliding rod; 80206. Fixing pin; 80207. Torsion spring; 803. Lower support assembly; 80301. Sixth electric push rod; 80302. Third support rod; 80303. Sliding support block; 80304. Sliding roller; 804. Motor; 805. Worm gear; 806. Worm wheel; 807. First gear; 808. Upper gear plate; 809. Lower gear plate; 810. Second gear. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Example

[0016] like Figure 1-15 As shown, this embodiment of the invention provides a welding device for the rear panel of an electric vehicle, including a conveyor belt 1. A vehicle frame 4 is fixedly connected to the upper surface of the conveyor belt 1 via a mounting bracket. A conveying device 3 is provided on one side of the conveyor belt 1. A robotic arm 2 is provided on the side of the conveyor belt 1 near the conveying device 3. A clamping device 5 is provided at the output end of the robotic arm 2. The rear panel 7 is clamped inside the clamping device 5. Welding devices 6 are provided on both sides of the clamping device 5. A support device 8 is provided at the position of the clamping device 5 in the moving direction of the conveyor belt 1.

[0017] The gripping device 5 is configured by installing movable buckles on the conveyor chain to mount the rear panel 7, while also facilitating the gripping device 5 to grasp the rear panel 7. The robotic arm 2 is an existing device, which is programmed to handle various complex movement operations. The various electric push rods in the gripping device 5 are connected and controlled by a PLC program.

[0018] The gripping device 5 includes a movable block 501, a first electric push rod 502, a sliding block 503, a gripping frame 504, a second electric push rod 505, and a first gripping head 506. The movable block 501 is fixedly connected to the output end of the robotic arm 2. The first electric push rod 502 is fixedly connected to the inner surface of the movable block 501. The sliding block 503 is fixedly connected to the output end of the first electric push rod 502 and slidably connected to the inner surface of the movable block 501. Two gripping frames 504 are provided and fixedly connected to both sides of the sliding block 503 at its end. Two second electric push rods 505 are provided on the gripping frame 504 and vertically distributed and fixedly connected to the inner surface of the gripping frame 504. The first gripping head 506 is fixedly connected to the output end of the second electric push rod 505.

[0019] The first gripper head 506 is made of rubber and slides on the rear panel 7. Multiple second electric push rods 505 are controlled by a PLC to synchronously extend and retract the first gripper head 506.

[0020] The support device 8 includes a limiting block 801, two side support components 802, a lower support component 803, a motor 804, a worm 805, a worm wheel 806, a first gear 807, an upper gear plate 808, a lower gear plate 809, and a second gear 810. The limiting block 801 is fixedly connected to the vertical rod of the clamping frame 504 and is located between the rear of the frame 4 and the rear panel 7. The upper end of the side support component 802 is movably connected to the inner surface of the limiting block 801. The lower support component 803 is movably connected to the inner surface of the limiting block 801 near the lower end. The motor 804 is fixedly connected to the inner surface of the limiting block 801. The worm 805 is fixedly connected to the output end of the motor 804. The side support assembly 802 includes a first support rod 80201, a second support rod 80202, a second gripping head 80203, a spring 80204, a sliding rod 80205, a fixing pin 80206, and a torsion spring 80207. The first support rod 80201 is rotatably connected to the inner surface of the limiting block 801 via a pin near the rear panel 7. The second gear 810 is fixedly connected to the other side of the first support rod 80201 and located at the pin position. The fixing pin 80206 is fixedly connected to the side surface of the second support rod 80202. The lower end of the second support rod 80202 is connected to the fixing pin 80206. A torsion spring 80207 is rotatably connected to the lower end of the first support rod 80201, and is sleeved on the side surface of the fixing pin 80206 with its two ends respectively connected to the opposite side surfaces between the first support rod 80201 and the second support rod 80202. The second gripping head 80203 is fixedly connected to one end of the sliding rod 80205, and the other end of the sliding rod 80205 is slidably connected to the inner surface of the limiting block 801. A spring 80204 is sleeved on the side surface of the sliding rod 80205, and its two ends are respectively fixedly connected to the opposite inner surfaces between the second gripping head 80203 and the limiting block 801. The worm gear 806 is rotatably connected to the inner surface of the limiting block 801 and meshes with the worm 805. The first gear 807 is fixedly connected to the worm gear 806. The lower surface of the upper gear plate 808 and the upper surface of the lower gear plate 809 are respectively meshed with the upper and lower sides of the first gear 807. The upper surfaces of the upper gear plate 808 and the lower gear plate 809 at the ends respectively mesh with the lower surfaces of the two second gears 810. The second gears 810 are located on the upper side surface of the side support assembly 802.

[0021] The welding device 6 includes a third electric push rod 601, a sliding plate 602, a connecting block 603, a side fastening plate 604, a lower fastening plate 605, and a welding assembly 606. The third electric push rod 601 is fixedly connected to the inner surface of the movable block 501. The middle position of the sliding plate 602 is fixedly connected to the output end of the third electric push rod 601. The sliding plate 602 is slidably connected to the surface of the sliding rod protruding on the clamping frame 504. The connecting block 603 is fixedly connected to one side surface of the sliding plate 602. The side fastening plate 604 is fixedly connected to the side surface of the connecting block 603. The welding assembly 606 is disposed on the sliding groove surface inside the side fastening plate 604. The two ends of the lower fastening plate 605 are fixedly connected to the opposite side of the two side fastening plates 604 and close to the lower end.

[0022] The side fastening plate 604 and the lower fastening plate 605 provide pressure to the rear panel 7, ensuring a tight fit between the rear panel 7 and the rear part of the frame 4, which facilitates welding.

[0023] The welding assembly 606 includes a first moving block 60601, an electric roller 60602, a fourth electric push rod 60603, a welding gun 60604, an elastic connecting column 60605, a second moving block 60606, a fifth electric push rod 60607, a grinder 60608, and a sliding fixing block 60609. Multiple electric rollers 60602 are provided and are respectively fixedly connected to the side surfaces of the first moving block 60601 and the second moving block 60606. The first moving block 60601 and the second moving block 60606 are slidably connected to the inner track of the side fastening plate 604 through the electric rollers 60602. The first moving block 60601 and the second moving block 60606 are fixedly connected to each other through the elastic connecting column 60605.

[0024] The grinding machine 60608 is an existing piece of equipment used for grinding weld joints, and the welding gun 60604 is an existing piece of welding equipment used for welding operations on locations that require welding.

[0025] The fourth electric push rod 60603 is fixedly connected to the inner crossbar of the first moving block 60601. The sliding fixed block 60609 is located at the position of the fourth electric push rod 60603 and fixedly connected to the output end of the fourth electric push rod 60603. The sliding fixed block 60609 is slidably connected to the inner surface of the first moving block 60601 through the two side slides. The welding gun 60604 is fixedly connected to the inner surface of the sliding fixed block 60609. The fifth electric push rod 60607 is fixedly connected to the inner connecting plate surface of the second moving block 60606. The grinder 60608 is fixedly connected to the output end of the fifth electric push rod 60607.

[0026] The lower support assembly 803 includes a sixth electric push rod 80301, a third support rod 80302, a sliding support block 80303, and a sliding roller 80304. The lower end of the sliding support block 80303 is fixedly connected to the upper surface of the third support rod 80302. The sixth electric push rod 80301 is fixedly connected to the inner surface of the limiting block 801. The middle position of the upper surface of the third support rod 80302 is fixedly connected to the output end of the sixth electric push rod 80301. The sliding roller 80304 is rotatably connected to the upper end of the sliding support block 80303 and to the inner surface of one side of the side support assembly 802. The third support rod 80302 is slidably connected to the lower side of the second gear 810 through the sliding support block 80303.

[0027] The upward movement of the sliding support block 80303 assists in retracting the second support rod 80202 back to its original position.

[0028] Working principle: The chassis 4 moves from the conveyor belt 1 along the base below, with the front of the chassis moving forward, to the position of the robotic arm 2. Then, the robotic arm 2 is activated to move the gripping device 5 to the position of the conveying equipment 3, and to move the position inside the gripping frame 504 to the groove of one of the rear panels 7. Next, the second electric push rod 505 is activated to drive the first gripping head 506 to fix the rear panel 7. Then, the robotic arm 2 moves the rear panel 7 to the rear position of the chassis 4. At the same time, the first electric push rod 502 drives the sliding block 503 to move and adjust the rear panel 7 and align it with the position to be welded. Then, the motor 804 is activated to drive the worm gear 805 to rotate. The rotation of the worm gear 805 drives the first gear 807 to rotate through the worm wheel 806. The rotation of the first gear 807, through the gear plates located below the upper gear plate 808 and above the lower gear plate 809, causes the upper gear plate 808 and the lower gear plate 809 to move relative to each other. The gear plates at both ends of the upper gear plate 808 and the lower gear plate 809 then drive the second gear 810 to rotate. The rotation of the second gear 810 causes the first support rod 80201 to rotate around the second gear 810. Simultaneously, the second support rod 80202 unfolds downwards via the torsion spring 80207 located below, pressing against the two side edges of the rear panel 7. At the same time, the sixth electric push rod 80301 is activated, causing the third support rod 80302 to move downwards into the rear end of the frame 4. After the side support assembly 802 has unfolded, the sliding rod 80205 loses contact with the second support rod 8020. Limiting position 2, the second electric push rod 505 is activated again to push the rear panel 7 towards the rear of the frame 4. At the same time, the first electric push rod 502 moves the sliding block 503 inward into the movable block 501 to keep the rear panel 7 relatively stationary. At this time, the sides of the first support rod 80201 and the second support rod 80202 facing the rear panel 7 are tightly against the inner side of the rear panel 7. At the same time, the side of the third support rod 80302 facing the rear panel 7 is also tightly against the position to be welded at the rear of the frame 4. Then, the third electric push rod 601 is activated to move the connecting block 603 towards the rear of the frame 4, so that the side fastening plate 604 and the lower fastening plate 605 facing the rear panel 7 are tightly against the position to be welded and a certain pressure is applied. Then, the electric push rod 605 is activated. Roller 60602 drives the first moving block 60601 and the second moving block 60606 to move in the groove in the side fastening plate 604. At the same time, the fourth electric push rod 60603 is activated to move the welding gun 60604 to the position to be welded and to perform welding. After welding is completed, the fifth electric push rod 60607 is activated to move the grinder 60608 to the position after welding for grinding. Welding and grinding are then completed in sequence. At the same time, the lower fastening plate 605 performs the same operation. After welding and grinding are completed, the third electric push rod 601 is activated to move the side fastening plate 604 and the lower fastening plate 605 to their original positions. Then, the second electric push rod 505 is activated to move the first clamping head 506 to release the rear panel 7.Simultaneously, the first electric push rod 502 is activated to move the sliding block 503 towards the rear panel 7, causing the support device 8 to move away from the welding position between the rear panel 7 and the rear of the frame 4. Then, the motor 804 is activated to rotate in the opposite direction, moving the side support assembly 802 back to its original position. When one end of 802 moves to the position inside the lower limiting block 801, the sixth electric push rod 80301 is activated to move the third support rod 80302 upward. Through the sliding support block 80303, the sliding roller 80304 on one side pushes the second support rod 80202 back into the interior of the first support rod 80201. Afterward, the welding device 6 is removed by the robotic arm 2, and the next rear panel 7 is welded.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding device for the rear panel of an electric vehicle, comprising a conveyor belt (1), characterized in that: The upper surface of the conveyor belt (1) is fixedly connected to a frame (4) by a mounting bracket. A conveying device (3) is provided on one side of the conveyor belt (1). A robotic arm (2) is provided on the side of the conveyor belt (1) close to the conveying device (3). A gripping device (5) is provided at the output end of the robotic arm (2). A rear panel (7) is gripped inside the gripping device (5). Welding devices (6) are provided on both sides of the gripping device (5). A support device (8) is provided on the gripping device (5) in the direction of movement of the conveyor belt (1). The gripping device (5) includes a movable block (501), a first electric push rod (502), a sliding block (503), a gripping frame (504), a second electric push rod (505), and a first gripping head (506). The movable block (501) is fixedly connected to the output end of the robotic arm (2). The first electric push rod (502) is fixedly connected to the inner surface of the movable block (501). The sliding block (503) is fixedly connected to the output end of the first electric push rod (502) and slidably connected to the inner surface of the movable block (501). Two gripping frames (504) are provided and fixedly connected to both sides of the sliding block (503) at the end. Two second electric push rods (505) are provided on the gripping frame (504) and vertically distributed and fixedly connected to the inner surface of the gripping frame (504). The first gripping head (506) is fixedly connected to the output end of the second electric push rod (505). The support device (8) includes a limiting block (801), two side support components (802), a lower support component (803), a motor (804), a worm (805), a worm wheel (806), a first gear (807), an upper gear plate (808), a lower gear plate (809), and a second gear (810). The limiting block (801) is fixedly connected to the vertical rod of the clamping frame (504) and is located between the rear of the frame (4) and the rear panel (7). The upper end of the side support component (802) is movably connected to the inner surface of the limiting block (801). The lower support component (803) is movably connected to the inner surface of the limiting block (801) near the lower end. The motor (804) is fixedly connected to the inner surface of the limiting block (801). The worm (805) is fixedly connected to the output end of the motor (804). The side support assembly (802) includes a first support rod (80201), a second support rod (80202), a second gripping head (80203), a spring (80204), a sliding rod (80205), a fixing pin (80206), and a torsion spring (80207). The first support rod (80201) is rotatably connected to the inner surface of the limiting block (801) via a pin near the rear panel (7). The second gear (810) is fixedly connected to the other side of the first support rod (80201) and located at the pin position. The fixing pin (80206) is fixedly connected to the side surface of the second support rod (80202). The lower end of the second support rod (80202) is connected to the fixing pin (80207). 06) Rotatably connected to the lower end of the first support rod (80201), the torsion spring (80207) is sleeved on the side surface of the fixing pin (80206) and its two ends are respectively connected to the opposite side surfaces between the first support rod (80201) and the second support rod (80202), the second gripping head (80203) is fixedly connected to one end of the sliding rod (80205), the other end of the sliding rod (80205) is slidably connected to the inner surface of the limiting block (801), the spring (80204) is sleeved on the side surface of the sliding rod (80205), and the two ends of the spring (80204) are respectively fixedly connected to the opposite inner surfaces between the second gripping head (80203) and the limiting block (801); The worm gear (806) is rotatably connected to the inner surface of the limiting block (801) and meshes with the worm (805). The first gear (807) is fixedly connected to the worm gear (806). The lower surface of the upper gear plate (808) and the upper surface of the lower gear plate (809) are respectively meshed with the upper and lower sides of the first gear (807). The upper surfaces of the upper gear plate (808) and the lower gear plate (809) at the ends respectively mesh with the lower surfaces of two second gears (810). The second gears (810) are located on the upper side surface of the side support assembly (802).

2. The electric vehicle rear panel welding device according to claim 1, characterized in that: The welding device (6) includes a third electric push rod (601), a sliding plate (602), a connecting block (603), a side fastening plate (604), a lower fastening plate (605), and a welding assembly (606). The third electric push rod (601) is fixedly connected to the inner surface of the movable block (501). The middle position of the sliding plate (602) is fixedly connected to the output end of the third electric push rod (601). The sliding plate (602) is slidably connected to the protruding slide rod surface on the clamping frame (504). The connecting block (603) is fixedly connected to one side surface of the sliding plate (602). The side fastening plate (604) is fixedly connected to the side surface of the connecting block (603). The welding assembly (606) is disposed on the sliding groove surface inside the side fastening plate (604). The two ends of the lower fastening plate (605) are fixedly connected to the opposite side of the two side fastening plates (604) and close to the lower end.

3. The electric vehicle rear panel welding device according to claim 2, characterized in that: The welding assembly (606) includes a first moving block (60601), an electric roller (60602), a fourth electric push rod (60603), a welding gun (60604), an elastic connecting column (60605), a second moving block (60606), a fifth electric push rod (60607), a grinder (60608), and a sliding fixing block (60609). The electric roller (60602) is provided in multiple portions and is fixedly connected to the side surfaces of the first moving block (60601) and the second moving block (60606). The first moving block (60601) and the second moving block (60606) are slidably connected to the inner rail of the side fastening plate (604) through the electric roller (60602). The first moving block (60601) and the second moving block (60606) are fixedly connected to each other through the elastic connecting column (60605).

4. The electric vehicle rear panel welding device according to claim 3, characterized in that: The fourth electric push rod (60603) is fixedly connected to the inner crossbar of the first moving block (60601). The sliding fixed block (60609) is fixedly connected to the output end of the fourth electric push rod (60603) at the position of the fourth electric push rod (60603). The sliding fixed block (60609) is slidably connected to the inner surface of the first moving block (60601) through two side slides. The welding gun (60604) is fixedly connected to the inner surface of the sliding fixed block (60609). The fifth electric push rod (60607) is fixedly connected to the inner connecting plate surface of the second moving block (60606). The grinder (60608) is fixedly connected to the output end of the fifth electric push rod (60607).

5. The electric vehicle rear panel welding device according to claim 1, characterized in that: The lower support assembly (803) includes a sixth electric push rod (80301), a third support rod (80302), a sliding support block (80303), and a sliding roller (80304). The lower end of the sliding support block (80303) is fixedly connected to the upper surface of the third support rod (80302). The sixth electric push rod (80301) is fixedly connected to the inner surface of the limiting block (801). The middle position of the upper surface of the third support rod (80302) is fixedly connected to the output end of the sixth electric push rod (80301). The sliding roller (80304) is rotatably connected to the upper end of the sliding support block (80303) and to the inner surface of one side of the side support assembly (802). The third support rod (80302) is slidably connected to the lower side of the second gear (810) through the sliding support block (80303).

Images