A welding device for processing door panels of new energy vehicles

Abstract

The present invention relates to a welding device for processing door panels of new energy vehicles, comprising a base and a positioning plate fixedly installed on the top thereof, a partition plate fixedly installed on the middle part of the front side of the positioning plate, a flip plate hinged on the front end face of the partition plate, a limiting mechanism for fixing a door reinforcement plate is arranged on the flip plate, and a scraping mechanism for cleaning welding slag on the back side of the flip plate is arranged on the front side of the positioning plate on one side of the partition plate; two welding points of the door reinforcement plate are preheated by an electric heating block, thereby reducing welding stress and cracks generated by the door reinforcement plate and avoiding affecting its normal working efficiency; after the two welding points of the door reinforcement plate are preheated, nitrogen is passed through an air intake hose and two air jet pipes and then blown out from the two air jet pipes, thereby reducing the oxygen content around the two welding points of the door reinforcement plate, thereby reducing pores and slag inclusions occurring during welding, and improving the welding quality of the door reinforcement plate.

Description

Technical Field

[0001] The invention relates to the technical field of automobile processing, and in particular to a welding device for processing a door panel of a new energy automobile. Background Art

[0002] In the production process of traditional automobile doors, it is necessary to weld reinforcement plates on the inner door panels. The main function is to improve the load-bearing capacity, deformation resistance and overall rigidity of the inner door panels, thereby enhancing the safety and durability of the vehicle. The welded reinforcement plates on the inner door panels are usually made of high-strength steel, aluminum alloy or other lightweight and high-strength materials, and the reinforcement plates are processed into a folded state, which can improve the local strength and rigidity of the reinforcement plates without increasing the thickness of the material;

[0003] When welding thicker door reinforcement plates, the existing welding devices for door reinforcement plates are likely to cause welding stress and cracks in the door reinforcement plates during operation, affecting the normal working efficiency of the door reinforcement plates. At the same time, during the welding process of the door reinforcement plates, the spatter generated is likely to adhere to the door inner panel, making it inconvenient to clean, affecting the subsequent installation of parts on the door inner panel. Summary of the invention

[0004] The technical problems solved by this solution are:

[0005] (1) How to solve the problem that the existing welding device for door reinforcement plates easily generates welding stress and cracks in the door reinforcement plates during operation, thereby affecting the normal working efficiency thereof;

[0006] (2) How to solve the problem that during the welding process of the door reinforcement plate, the spatter generated easily adheres to the door inner panel, making it inconvenient to clean and affecting the subsequent installation of parts on the door inner panel.

[0007] The object of the present invention can be achieved through the following technical solutions: A welding device for processing door panels of new energy vehicles, comprising a base and a positioning plate fixedly installed on the top thereof, a partition plate fixedly installed in the middle of the front face of the positioning plate, a flip plate hinged on the front end face of the partition plate, a limiting mechanism for fixing a door reinforcement plate is arranged on the flip plate, and a scraping mechanism for cleaning welding slag on the back of the flip plate is arranged on the front face of the positioning plate on one side of the partition plate;

[0008] The limiting mechanism includes a slide groove opened on the front of the flip plate, the slide groove is inclined, and the inner wall of the slide groove is provided with two sliders slidingly through a guide rail, and two electric heating blocks are fixedly installed on the front of the slider, and the positions of the two electric heating blocks correspond to the folds of the door reinforcement plate, and an air supply unit for reducing the oxygen content around the door reinforcement plate is provided below the slide groove;

[0009] The scraper mechanism includes a second cylinder fixedly connected to the positioning plate, the second cylinder is vertically arranged, and a scraper knife for cleaning welding slag on the back of the flip plate is fixedly installed on the protruding end of the second cylinder, the bottom end of the scraper knife is in contact with the flip plate, a guide sleeve is provided on one side of the second cylinder, a lifting rod is slidably provided on the inner wall of the guide sleeve, a roller is rotatably provided on the top end of the lifting rod, and a baffle plate is also fixedly connected to the top of the lifting rod, and a thrust spring is elastically provided between the baffle plate and the top end of the guide sleeve.

[0010] A further technical improvement of the present invention is that a guide rod is fixedly installed on the front of the flip plate, a sliding sleeve is provided on the guide rod, transmission rods are hinged on the outer walls of both sides of the sliding sleeve, and one end of the two transmission rods is respectively hinged to the corresponding slider.

[0011] A further technical improvement of the present invention is that a tension spring is fixedly connected between the two sliding blocks.

[0012] A further technical improvement of the present invention is that the air supply unit includes an adjusting cylinder fixedly connected to the front side of the flip plate, a piston is slidably arranged on the inner wall of the adjusting cylinder, a push-pull rod is fixedly inserted in the middle of the piston, both ends of the push-pull rod are movably inserted through the adjusting cylinder, and one end of the push-pull rod is fixedly connected to the sliding sleeve.

[0013] A further technical improvement of the present invention is that a first cylinder is fixedly arranged on the flip plate, and the protruding end of the first cylinder is fixedly connected to the other end of the push-pull rod.

[0014] A further technical improvement of the present invention is that: the outer walls of both sides of the adjusting cylinder close to one end of the first cylinder are connected with jet pipes, the output ends of the two jet pipes are respectively arranged toward the two sliders, the end of the adjusting cylinder away from the first cylinder is connected with an intake hose, the input end of the intake hose passes through the flip plate and is connected with an external gas supply tooling for providing nitrogen; by controlling the rotation of the servo motor, the flip plate is driven to rotate to the processing station, at this time, the electric heating blocks on the two sliders are clamped with the folds of the door reinforcement plate, and then the extended end of the first cylinder is controlled to extend to the longest, so that the piston slides to the middle of the adjusting cylinder, and the sliding sleeve is pushed by the push-pull rod, and the two transmission rods are cooperated to drive the two sliders to slide to the two welding places of the door reinforcement plate, and start Turn on the electric heating block to preheat the two welding points of the door reinforcement plate, thereby reducing the welding stress and cracks generated by the door reinforcement plate and avoiding affecting its normal working efficiency; after the preheating of the two welding points of the door reinforcement plate is completed, control the extended end of the first cylinder to shrink to the shortest, so that the two sliders slide to the middle of the door reinforcement plate, control the output end of the welding tool to pass through the slide groove to weld the door reinforcement plate, and slide the piston to the end of the adjusting cylinder close to the first cylinder, so that nitrogen passes through the intake hose and the two jet pipes, and then blows out from the two jet pipes, reducing the oxygen content around the two welding points of the door reinforcement plate, thereby reducing the pores and slag inclusions that appear during welding, and improving the quality of the door reinforcement plate welding.

[0015] A further technical improvement of the present invention is that a flip rod is rotatably arranged on the positioning plate between the second cylinder and the lifting rod, one end of the flip rod is rollingly connected to the roller, and the protruding end of the second cylinder is also fixedly connected to a shift rod, and the shift rod is slidably connected to the other end of the flip rod.

[0016] The further technical improvement of the present invention lies in that: a clamping plate is also rotatably provided on the positioning plate, one end of the clamping plate is clamped with the flip plate, and the bottom end of the lifting rod is movably connected with the middle part of the clamping plate through a fixing pin; the welding slag splashed during the welding process is shielded by the flip plate, thereby reducing the probability of welding slag adhering to the inner panel of the vehicle door, and preventing the subsequent installation of parts on the inner panel of the vehicle door from being affected; after the welding operation is completed, the servo motor is controlled to rotate and reset, so that the flip plate rotates to the cleaning station, at this time, the bottom end of the scraper knife contacts the flip plate, and the extended end of the second cylinder is controlled to extend from the shortest to the longest. In this process, the bottom end of the scraper knife cleans the welding slag attached to the back of the flip plate, and at the same time, through the action of the thrust spring, the baffle plate drives the lifting rod to rise, and the pin shaft drives the clamping plate to flip, so that one end of it is clamped with the flip plate, thereby preventing the flip plate from moving, and avoiding affecting the efficiency of the scraper knife in cleaning the welding slag.

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

[0018] When the present invention is in use, the servo motor is controlled to rotate to drive the flip plate to rotate to the processing station. At this time, the electric heating blocks on the two sliders are clamped with the folds of the door reinforcement plate, and then the extended end of the first cylinder is controlled to extend to the longest, so that the piston slides to the middle of the adjustment cylinder, and the sliding sleeve is pushed by the push-pull rod, and the two transmission rods are cooperated to drive the two sliders to slide to the two welding places of the door reinforcement plate, and the electric heating block is turned on to preheat the two welding places of the door reinforcement plate, thereby reducing the welding stress and cracks generated by the door reinforcement plate and avoiding affecting its Normal working efficiency; after preheating the two welding points of the door reinforcement plate, control the extended end of the first cylinder to shrink to the shortest, so that the two slide blocks slide to the middle of the door reinforcement plate, control the output end of the welding tooling to pass through the slide groove to weld the door reinforcement plate, and slide the piston to the end of the adjusting cylinder close to the first cylinder, so that nitrogen passes through the intake hose and two jet pipes, and then blows out from the two jet pipes, reducing the oxygen content around the two welding points of the door reinforcement plate, thereby reducing the pores and slag inclusions that appear during welding, and improving the quality of welding of the door reinforcement plate.

[0019] When the present invention is in use, the welding slag splashed during the welding process is shielded by the flip plate, thereby reducing the probability of the welding slag adhering to the inner panel of the vehicle door, and preventing the subsequent installation of parts on the inner panel of the vehicle door from being affected; after the welding operation is completed, the servo motor is controlled to rotate and reset, so that the flip plate rotates to the cleaning station. At this time, the bottom end of the scraper is in contact with the flip plate, and the extended end of the second cylinder is controlled to extend from the shortest to the longest. In this process, the bottom end of the scraper cleans the welding slag attached to the back of the flip plate. At the same time, through the action of the thrust spring, the baffle drives the lifting rod to rise, and cooperates with the pin shaft to drive the clamping plate to flip, so that one end of the clamping plate is clamped with the flip plate, thereby preventing the flip plate from moving, and avoiding affecting the efficiency of the scraper in cleaning the welding slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the limiting mechanism of the present invention;

[0023] Figure 3 It is a three-dimensional schematic diagram of the local structure of the limiting mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the air supply unit of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the scraping mechanism of the present invention;

[0026] Figure 6 It is a schematic structural stereogram of the scraper of the present invention.

[0027] In the figure: 1. welding tool; 2. partition; 3. scraper mechanism; 4. limiting mechanism; 5. flip plate; 6. base; 7. positioning plate; 8. clamping tool; 9. limiting rod; 10. positioning frame; 11. servo motor; 301. flip rod; 302. baffle; 303. lifting rod; 304. guide sleeve; 305. card plate; 306. fixing pin; 307. lever; 308. second cylinder; 309. scraper; 401. slider; 402. guide rail; 403. slide groove; 404. guide rod; 405. air supply unit; 406. first cylinder; 407. electric heating block; 408. tension spring; 409. transmission rod; 410. sliding sleeve; 411. push-pull rod; 4051. air intake hose; 4052. adjusting cylinder; 4053. piston; 4054. jet pipe. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 6 As shown, a welding device for processing door panels of new energy vehicles includes a base 6 and a positioning plate 7 fixedly installed on the top thereof, a partition plate 2 is fixedly installed in the middle of the front side of the positioning plate 7, a flip plate 5 is hinged on the front end face of the partition plate 2, a limiting mechanism 4 for fixing the door reinforcement plate is arranged on the flip plate 5, and a scraping mechanism 3 for cleaning the welding slag on the back side of the flip plate 5 is arranged on the front side of the positioning plate 7 on one side of the partition plate 2.

[0030] See also Figure 1-Figure 6 As shown, the above-mentioned limiting mechanism 4 includes a slide groove 403 opened on the front side of the flip plate 5, the slide groove 403 is inclined, and the inner wall of the slide groove 403 is slidably provided with two sliders 401 through the guide rail 402, and two electric heating blocks 407 are fixedly installed on the front side of the slider 401, and the positions of the two electric heating blocks 407 correspond to the folds of the door reinforcement plate, and an air supply unit 405 for reducing the oxygen content around the door reinforcement plate is arranged below the slide groove 403.

[0031] See also Figure 1-Figure 6 As shown, a guide rod 404 is fixedly installed on the front of the above-mentioned flip plate 5, and a sliding sleeve 410 is slidably sleeved on the guide rod 404. Transmission rods 409 are hinged on the outer walls of both sides of the sliding sleeve 410, and one end of the two transmission rods 409 is hinged to the corresponding slider 401 respectively.

[0032] See also Figure 3 As shown, a tension spring 408 is fixedly connected between the two sliders 401 .

[0033] See also Figure 1-Figure 6 As shown, the above-mentioned air supply unit 405 includes an adjusting cylinder 4052 fixedly connected to the front side of the flip plate 5, a piston 4053 is slidably arranged on the inner wall of the adjusting cylinder 4052, a push-pull rod 411 is fixedly inserted in the middle of the piston 4053, both ends of the push-pull rod 411 are movable through the adjusting cylinder 4052, and one end of the push-pull rod 411 is fixedly connected to the sliding sleeve 410.

[0034] See also Figure 3 and Figure 4 As shown, a first cylinder 406 is also fixedly disposed on the above-mentioned flip plate 5 , and the protruding end of the first cylinder 406 is fixedly connected to the other end of the push-pull rod 411 .

[0035] See also Figure 1-Figure 6 As shown, the outer walls of both sides of the adjusting cylinder 4052 close to one end of the first cylinder 406 are connected with jet pipes 4054, and the output ends of the two jet pipes 4054 are respectively arranged toward the two sliders 401, and the end of the adjusting cylinder 4052 away from the first cylinder 406 is connected with an air intake hose 4051, and the input end of the air intake hose 4051 passes through the flip plate 5 and is connected with an external gas supply tooling for providing nitrogen; by controlling the servo motor 11 to rotate, the flip plate 5 is driven to rotate to the processing station, at this time, the electric heating blocks 407 on the two sliders 401 are engaged with the folds of the door reinforcement plate, and then the extended end of the first cylinder 406 is controlled to extend to the longest, so that the piston 4053 slides to the middle of the adjusting cylinder 4052, and the sliding sleeve 410 is pushed by the push-pull rod 411, and the two transmission rods 409 are cooperated to drive the two sliders 401 to slide to the two ends of the door reinforcement plate At the welding point, turn on the electric heating block 407 so that the electric heating block 407 preheats the two welding points of the door reinforcement plate, thereby reducing the welding stress and cracks generated by the door reinforcement plate and avoiding affecting its normal working efficiency; after the preheating of the two welding points of the door reinforcement plate is completed, control the extended end of the first cylinder 406 to shrink to the shortest, so that the two sliders 401 slide to the middle of the door reinforcement plate, control the output end of the welding tool 1 to pass through the slide groove 403 to weld the door reinforcement plate, and slide the piston 4053 to the end of the adjusting cylinder 4052 close to the first cylinder 406, so that nitrogen passes through the air intake hose 4051 and the two jet pipes 4054, and then blows out from the two jet pipes 4054, reducing the oxygen content around the two welding points of the door reinforcement plate, thereby reducing the pores and slag inclusions that appear during welding, and improving the quality of the door reinforcement plate welding.

[0036] See also Figure 1-Figure 6As shown, the scraper mechanism 3 includes a second cylinder 308 fixedly connected to the positioning plate 7, the second cylinder 308 is vertically arranged, and a scraper knife 309 for cleaning the welding slag on the back of the flip plate 5 is fixedly installed at the protruding end of the second cylinder 308, the bottom end of the scraper knife 309 is in contact with the flip plate 5, a guide sleeve 304 is arranged on one side of the second cylinder 308, a lifting rod 303 is slidingly arranged on the inner wall of the guide sleeve 304, a roller is rotatably arranged on the top end of the lifting rod 303, and a baffle plate 302 is also fixedly connected to the top of the lifting rod 303, and a thrust spring is elastically arranged between the baffle plate 302 and the top end of the guide sleeve 304.

[0037] See also Figure 1-Figure 6 As shown, a flip rod 301 is rotatably arranged on the positioning plate 7 between the second cylinder 308 and the lifting rod 303, one end of the flip rod 301 is rollingly connected to the roller, and the protruding end of the second cylinder 308 is also fixedly connected to a shifting rod 307, and the shifting rod 307 is slidably connected to the other end of the flip rod 301.

[0038] See also Figure 5 As shown, the positioning plate 7 is also rotatably provided with a clamping plate 305, one end of which is clamped with the flip plate 5, and the bottom end of the lifting rod 303 is movably connected with the middle part of the clamping plate 305 through a fixing pin 306; the flip plate 5 is used to shield the splashing welding slag generated during the welding process, thereby reducing the probability of the welding slag adhering to the inner panel of the vehicle door, and preventing the subsequent installation of parts on the inner panel of the vehicle door from being affected; after the welding operation is completed, the servo motor 11 is controlled to rotate and reset, so that the flip plate 5 is rotated to the cleaning position. At this time, the bottom end of the scraper 309 contacts the flip plate 5, controlling the extended end of the second cylinder 308 to extend from the shortest to the longest. During this process, the bottom end of the scraper 309 cleans the welding slag attached to the back of the flip plate 5. At the same time, through the action of the thrust spring, the baffle 302 drives the lifting rod 303 to rise, and cooperates with the pin shaft 306 to drive the clamping plate 305 to flip, so that one end of the clamping plate 305 is clamped with the flip plate 5 to prevent the flip plate 5 from moving, thereby avoiding affecting the efficiency of the scraper 309 in cleaning the welding slag.

[0039] See also Figure 1 As shown, a plurality of positioning frames 10 for positioning the door inner panel are fixedly mounted on the front side of the positioning plate 7 away from the scraper mechanism 3. A limiting rod 9 for positioning the door panel reinforcement plate is also arranged on the positioning plate 7. The limiting rod 9 movably passes through the door inner panel.

[0040] See also Figure 1 As shown, the top of the above-mentioned positioning plate 7 is movably provided with a welding tool 1 for welding the door panel reinforcement plate, and the welding tool 1 is the prior art. The middle and bottom of the positioning plate 7 are provided with a clamping tool 8 for fixing the inner panel of the vehicle door, and the clamping tool 8 is the prior art.

[0041] See also Figure 1 As shown, a servo motor 11 for driving the flip plate 5 to rotate is fixedly arranged at the bottom of the partition plate 2.

[0042] Working principle: When the present invention is used, first, Figure 1 As shown, the door inner panel is placed on the positioning plate 7 by an external transfer device, the door inner panel is positioned by a plurality of positioning frames 10, and then the door reinforcement plate is installed at a specified position on the door inner panel, and the door reinforcement plate is positioned by a limit rod 9. At the same time, two clamping tools 8 are opened to fix the door inner panel; Figure 1-Figure 3 As shown, the servo motor 11 is controlled to rotate, driving the flip plate 5 to rotate to the processing station. At this time, the electric heating blocks 407 on the two sliders 401 are engaged with the folds of the door reinforcement plate, and then the extended end of the first cylinder 406 is controlled to extend to the longest, as shown in FIG. Figure 3 and Figure 4 As shown, the piston 4053 slides to the middle of the adjustment cylinder 4052. At this time, no nitrogen is introduced into the two injection pipes 4054. The push-pull rod 411 pushes the sliding sleeve 410 to slide, and the two transmission rods 409 drive the two sliders 401 to slide in the slide groove 403, so that the two sliders 401 slide to the two welding places of the door reinforcement plate, and the electric heating block 407 is turned on to preheat the two welding places of the door reinforcement plate, thereby reducing the welding stress and cracks generated by the door reinforcement plate to avoid affecting its normal working efficiency; Figure 2 and Figure 4 As shown, after the preheating of the two welding places of the door reinforcement plate is completed, the extended end of the first cylinder 406 is controlled to shrink to the shortest, so that the two sliders 401 slide to the middle of the door reinforcement plate. At this time, the output end of the welding tool 1 is controlled to pass through the slide groove 403 to weld the door reinforcement plate, and the piston 4053 slides to the end of the adjustment cylinder 4052 close to the first cylinder 406, so that the nitrogen passes through the intake hose 4051 and the two injection pipes 4054, and then blows out from the two injection pipes 4054, so as to reduce the oxygen content around the two welding places of the door reinforcement plate, thereby reducing the pores and slag inclusions during welding, and improving the quality of the door reinforcement plate welding. Then, the welding slag splashed during the welding process is shielded by the flip plate 5, so as to reduce the probability of the welding slag adhering to the door inner panel, and prevent the subsequent installation of parts on the door inner panel from being affected; as shown in FIG. Figure 1 , Figure 5 and Figure 6As shown, after the welding operation is completed, the servo motor 11 is controlled to rotate and reset, so that the flip plate 5 rotates to the cleaning position. At this time, the bottom end of the scraper 309 contacts the flip plate 5, and the extended end of the second cylinder 308 is controlled to extend from the shortest to the longest. In this process, the bottom end of the scraper 309 cleans the welding slag attached to the back of the flip plate 5. At the same time, through the action of the thrust spring, the baffle 302 drives the lifting rod 303 to rise, and cooperates with the pin shaft 306 to drive the clamping plate 305 to flip, so that one end of it is clamped with the flip plate 5 to prevent the flip plate 5 from moving, so as to avoid affecting the efficiency of the scraper 309 in cleaning the welding slag.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A welding device for processing a door panel of a new energy vehicle, comprising a base (6) and a positioning plate (7) fixedly mounted on the top thereof, wherein a partition plate (2) is fixedly mounted on the middle of the front side of the positioning plate (7), characterized in that: The front end surface of the partition (2) is hingedly connected with a flip plate (5), the flip plate (5) is provided with a limiting mechanism (4) for fixing the door reinforcement plate, and the front surface of the positioning plate (7) on one side of the partition (2) is provided with a scraping mechanism (3) for cleaning welding slag on the back side of the flip plate (5); The limiting mechanism (4) comprises a slide groove (403) provided on the front side of the flip plate (5), the slide groove (403) being inclined, and two sliders (401) being slidably provided on the inner wall of the slide groove (403), two electric heating blocks (407) being fixedly installed on the front side of the sliders (401), the positions of the two electric heating blocks (407) corresponding to the folds of the door reinforcement plate, and an air supply unit (405) for reducing the oxygen content around the door reinforcement plate being provided below the slide groove (403); The scraper mechanism (3) comprises a second cylinder (308) fixedly connected to the positioning plate (7), a scraper blade (309) is fixedly installed at the protruding end of the second cylinder (308), a guide sleeve (304) is provided on one side of the second cylinder (308), a lifting rod (303) is slidably provided on the inner wall of the guide sleeve (304), a roller is rotatably provided at the top end of the lifting rod (303), and a baffle (302) is also fixedly connected to the top of the lifting rod (303), a thrust spring is elastically provided between the baffle (302) and the top end of the guide sleeve (304), and the second cylinder (308) is provided with a guide sleeve (304) on one side of the second cylinder (308). A flip rod (301) is rotatably provided on the positioning plate (7) between the cylinder (308) and the lifting rod (303), one end of the flip rod (301) is rollingly connected to the roller, the protruding end of the second cylinder (308) is also fixedly connected to a shifting rod (307), the shifting rod (307) is slidably connected to the other end of the flip rod (301), a clamping plate (305) is also rotatably provided on the positioning plate (7), one end of the clamping plate (305) is clamped to the flip plate (5), and the bottom end of the lifting rod (303) is movably connected to the middle part of the clamping plate (305) through a fixing pin (306).

2. A welding device for processing door panels of new energy vehicles according to claim 1, characterized in that: A guide rod (404) is fixedly mounted on the front of the flip plate (5); a sliding sleeve (410) is slidably mounted on the guide rod (404); transmission rods (409) are hingedly mounted on both side outer walls of the sliding sleeve (410); and one end of the two transmission rods (409) is hingedly mounted to the corresponding slider (401).

3. A welding device for processing door panels of new energy vehicles according to claim 1, characterized in that: A tension spring (408) is fixedly connected between the two sliding blocks (401).

4. A welding device for processing door panels of new energy vehicles according to claim 1, characterized in that: The air supply unit (405) comprises an adjusting cylinder (4052) fixedly connected to the front of the flip plate (5); a piston (4053) is slidably provided on the inner wall of the adjusting cylinder (4052); a push-pull rod (411) is fixedly inserted in the middle of the piston (4053); both ends of the push-pull rod (411) are movably inserted through the adjusting cylinder (4052), and one end of the push-pull rod (411) is fixedly connected to the sliding sleeve (410).

5. A welding device for processing door panels of new energy vehicles according to claim 1, characterized in that: A first cylinder (406) is also fixedly arranged on the flip plate (5), and the protruding end of the first cylinder (406) is fixedly connected to the other end of the push-pull rod (411).

6. A welding device for processing door panels of new energy vehicles according to claim 4, characterized in that: The outer walls of both sides of the regulating cylinder (4052) close to one end of the first cylinder (406) are connected with injection pipes (4054), and the output ends of the two injection pipes (4054) are respectively arranged toward the two sliders (401), and the end of the regulating cylinder (4052) away from the first cylinder (406) is connected with an intake hose (4051), and the input end of the intake hose (4051) is connected to an external gas supply tooling for providing nitrogen.

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