A robot automatic welding device for a new energy vehicle chassis traction hook

Abstract

The application discloses a robot automatic welding device for a towing hook of a new energy automobile chassis, and relates to the field of towing hook welding technology.The robot automatic welding device comprises a bottom plate, a towing hook fixing assembly is arranged on the top end side wall of the bottom plate and used for fixing the towing hook, a welding assembly is arranged above the towing hook fixing assembly and used for welding the towing hook and the mounting bracket, and a mounting bracket fixing assembly is fixedly connected to the top end side wall of the bottom plate and used for adjusting the fixing angle according to the inclination angle of the side wall of the mounting bracket, the position and the inclination angle of the mounting screw hole arranged on the surface of the mounting bracket.The robot automatic welding device can be adapted to towing hooks and mounting brackets of various models and various specifications, greatly reduces the storage cost and replacement cost of the fixing parts in the production process, and improves the universality and batch production adaptability of the device.

Description

Technical Field

[0001] This invention belongs to the field of traction hook welding technology, and in particular relates to a robotic automatic welding device for traction hooks used in new energy vehicle chassis. Background Technology

[0002] In the production of chassis components for new energy vehicles, the reliability of the connection between the tow hook and the mounting bracket directly affects vehicle driving safety. The welding process, often employing automatic or semi-automatic arc welding, is a core step in ensuring the structural strength of the tow hook. Currently, existing automatic and semi-automatic arc welding equipment suffers from significant shortcomings in adaptability, positioning accuracy, and welding stability, making it difficult to meet the batch welding needs of various specifications of tow hooks and mounting brackets.

[0003] In existing welding equipment, the fixing structure of the traction hook and the mounting bracket is mostly a fixed design. The spacing, tilt angle and clamping force of the traction hook clamping parts cannot be flexibly adjusted, and it can only be adapted to a single model of traction hook. The fixing mechanism of the mounting bracket also has adjustment limitations. It cannot be adapted to the tilt angle of the mounting bracket side wall, the position and tilt angle of the mounting screw hole. This means that when changing to different specifications of workpieces, the corresponding fixing parts need to be replaced manually. This not only increases the cost of fixing parts and the time spent on replacement, but also seriously affects the efficiency of batch welding and has poor versatility. Meanwhile, the existing device lacks sufficient coordination between positioning and welding. During automatic and semi-automatic arc welding, the positioning of the traction hook and the mounting bracket is prone to offset or misalignment. The angle of the welding torch and the distance between it and the weld are not precisely adjusted. Furthermore, the welding torch moves unevenly during the welding process, which can easily lead to poor weld formation, defects such as incomplete welding and missed welding. The welding quality is inconsistent and it is difficult to meet the high-strength requirements of the traction hook for new energy vehicle chassis.

[0004] To address these issues, we propose a robotic automated welding device for traction hooks used in new energy vehicle chassis. Summary of the Invention

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A robotic automatic welding device for a tow hook for a new energy vehicle chassis includes a base plate. The top side wall of the base plate is provided with a tow hook fixing assembly for fixing the tow hook. Above the tow hook fixing assembly is a welding assembly for welding the tow hook to a mounting bracket. The top side wall of the base plate is fixedly connected to a mounting bracket fixing assembly for adjusting the fixing angle according to the inclination angle of the mounting bracket side wall and the position and inclination angle of the mounting screw holes opened on the surface of the mounting bracket.

[0006] Preferably, the traction hook fixing assembly includes a first groove formed on the top side wall of the base plate, a first electric slide rail fixedly connected to the inner wall of the first groove, a first sliding plate slidably connected to the top side wall of the first electric slide rail, a first electric telescopic rod fixedly connected to the top side wall of the first sliding plate, and a first mounting plate fixedly connected to the telescopic end of the first electric telescopic rod.

[0007] Preferably, a bent rod is fixedly connected to the side wall of the first mounting plate, and a second mounting plate is fixedly connected to one end of the bent rod. A second electric slide rail is fixedly connected to the inner wall of both the second mounting plate and the first mounting plate. A plurality of second slide plates are slidably connected to the side wall of each of the second electric slide rails, and a second electric telescopic rod is fixedly connected to the side wall of each of the second slide plates.

[0008] Preferably, the telescopic ends of the second electric telescopic rod are all fixedly connected to a first U-plate, the inner wall of the first U-plate is rotatably connected to a first round rod, the side wall of the first U-plate is fixedly connected to a first motor, the output end of the first motor passes through the side wall of the first U-plate and is fixedly connected to one end of the first round rod, the rod wall of the first round rod is fixedly connected to a support rod, one end of the support rod is fixedly connected to a clamping plate, the inner walls of the two ends of the clamping plate are symmetrically fixedly connected to two third electric telescopic rods, and the telescopic ends of the third electric telescopic rods are all fixedly connected to a first clamping plate.

[0009] Preferably, the welding assembly includes a movable slide plate slidably connected to the top side wall of a first electric slide rail, a fourth electric telescopic rod fixedly connected to the top side wall of the movable slide plate, a mounting ring fixedly connected to the telescopic end of the fourth electric telescopic rod, a third electric slide rail fixedly connected to the inner wall of the mounting ring, and a third slide plate slidably connected to the side wall of the third electric slide rail.

[0010] Preferably, a second U-plate is fixedly connected to the side wall of the third slide plate, a second round rod is rotatably connected to the inner wall of the second U-plate, a second motor is fixedly connected to the side wall of the second U-plate, the output end of the second motor passes through the side wall of the second U-plate and is fixedly connected to one end of the second round rod, a fifth electric telescopic rod is fixedly connected to the rod wall of the second round rod, and a MAG welding gun is fixedly connected to the telescopic end of the fifth electric telescopic rod.

[0011] Preferably, the mounting bracket fixing assembly includes a connecting plate fixedly connected to the top side wall of the base plate, two third U-plates symmetrically fixedly connected to the inner walls of both ends of the connecting plate, a third round rod rotatably connected to the inner wall of the third U-plate, a third motor fixedly connected to the side wall of the third U-plate, and the output end of the third motor passing through the side wall of the third U-plate and fixedly connected to one end of the third round rod.

[0012] Preferably, a sixth electric telescopic rod is fixedly connected to the wall of the third round rod, a second clamping plate is fixedly connected to the telescopic end of the sixth electric telescopic rod, a second groove is provided on the inner wall of the connecting plate, a fifth electric slide rail is fixedly connected to the inner wall of the second groove, two fifth sliding plates are slidably connected to the side wall of the fifth electric slide rail, and a connecting block is fixedly connected to the side wall of the fifth sliding plate.

[0013] Preferably, a fourth electric slide rail is fixedly connected to the inner wall of the connecting block, two fourth sliding plates are slidably connected to the side walls of the fourth electric slide rail, a fourth U-plate is fixedly connected to the side walls of the fourth sliding plates, a fourth round rod is rotatably connected to the inner wall of the fourth U-plate, and a fourth motor is fixedly connected to the side walls of the fourth U-plate.

[0014] Preferably, the output end of the fourth motor passes through the side wall of the fourth U-plate and is fixedly connected to one end of the fourth round rod. The rod wall of the fourth round rod is provided with a third groove. The inner wall of the third groove is fixedly connected to a fifth motor. The output end of the fifth motor is fixedly connected to a seventh electric telescopic rod. The telescopic end of the seventh electric telescopic rod is fixedly connected to a mounting screw.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In terms of traction hook fixing, this invention utilizes a second electric slide rail to drive the second sliding plate, allowing for flexible adjustment of the spacing between the second electric telescopic rods and subsequent clamping components to accommodate traction hooks of different sizes. A first motor drives the first round rod to rotate, causing the support rod, clamping plate, and first clamping plate to rotate, precisely adjusting the tilt angle of the first clamping plate to accommodate traction hooks with different front-end profiles and tilt angles. The extension and retraction of the third electric telescopic rod allows for flexible adjustment of the clamping force of the first clamping plate, ensuring secure fixing of traction hooks of different specifications without the need to replace the traction hook fixing components. Regarding mounting bracket fixing, a third motor drives the third round rod to rotate, adjusting the tilt angle of the second clamping plate to accommodate mounting brackets with different sidewall tilt angles. The coordinated movement of the fifth and fourth electric slide rails allows for precise movement of the mounting screw to different mounting screw hole positions, accommodating mounting brackets with different mounting screw hole distributions. A fourth motor drives the fourth round rod to rotate, adjusting the tilt angle of the mounting screw to accommodate mounting screw holes with different tilt angles, eliminating the need to replace the mounting bracket fixing components. In summary, this invention can be adapted to various models and specifications of traction hooks and mounting brackets, significantly reducing the cost of storing and replacing fasteners during the production process, and improving the versatility and mass production adaptability of the device. This invention effectively improves welding positioning accuracy and welding quality stability through a fully automated positioning, clamping, and welding structure design. In terms of positioning, the traction hook is clamped collaboratively by multiple adjustable angle and position first clamping plates, ensuring no offset or wobbling after fixation. The mounting bracket is secured through a dual fixing method: initial clamping by a second clamping plate and limiting fixation by mounting screws, ensuring precise positioning and firm fixation. The height of the traction hook is adjusted by a first electric telescopic rod, ensuring that the traction hook and the welding part of the mounting bracket are on the same plane, preventing misalignment of the weld joint. The mounting ring guides and positions the traction hook, ensuring precise alignment of the contact area between the traction hook and the mounting bracket, providing a stable reference for welding. In terms of welding, the welding angle of the MAG welding torch is adjusted by the second motor, and the distance between the welding torch and the weld is adjusted by the fifth electric telescopic rod to ensure that the welding torch is accurately aligned with the weld. The MAG welding torch is driven to move at a uniform speed along the weld by the third electric slide rail, realizing fully automated arc welding. This avoids the differences in manual welding techniques, ensures uniform weld formation and strong weld joints, effectively reduces defects such as incomplete welding and missed welding, improves the consistency and reliability of welding quality, and meets the high-strength use requirements of the towing hook of the new energy vehicle chassis. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the present invention. Figure 1 ; Figure 3 For the present invention Figure 2 Enlarged view of part A; Figure 4 This is a partial structural diagram of the present invention. Figure 2 ; Figure 5 This is a partial structural diagram of the present invention. Figure 3 ; Figure 6 This is a partial structural diagram of the present invention. Figure 4 .

[0017] In the diagram: 1. Base plate; 2. Traction hook fixing assembly; 21. First groove; 22. First electric slide rail; 23. First sliding plate; 24. First electric telescopic rod; 25. First mounting plate; 26. Bent rod; 27. Second mounting plate; 28. Second electric slide rail; 29. ​​Second sliding plate; 210. Second electric telescopic rod; 211. First U-plate; 212. First round rod; 213. First motor; 214. Support rod; 215. Clamping plate; 216. Third electric telescopic rod; 217. First clamping plate; 3. Welding assembly; 31. Moving sliding plate; 32. Fourth electric telescopic rod; 33. Mounting ring; 34. Third electric slide rail; 35. Third sliding plate; 36. 37. Second U-plate; 38. Second round rod; 39. Second motor; 30. Fifth electric telescopic rod; 41. MAG welding torch; 42. Mounting bracket fixing assembly; 43. Connecting plate; 44. Third U-plate; 45. Third round rod; 46. Third motor; 47. Sixth electric telescopic rod; 48. Second clamping plate; 49. Second groove; 40. Fifth electric slide rail; 410. Fifth sliding plate; 411. Connecting block; 412. Fourth electric slide rail; 413. Fourth U-plate; 414. Fourth round rod; 415. Fourth motor; 416. Third groove; 417. Fifth motor; 418. Seventh electric telescopic rod; 419. Mounting screw. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] The following electrical components are all electrically connected to the external PLC controller.

[0020] Reference Figure 1 - Figure 6 A robotic automatic welding device for a tow hook for a new energy vehicle chassis includes a base plate 1. A tow hook fixing assembly 2 is provided on the top side wall of the base plate 1 for fixing the tow hook. A welding assembly 3 is provided above the tow hook fixing assembly 2 for welding the tow hook to a mounting bracket. A mounting bracket fixing assembly 4 is fixedly connected to the top side wall of the base plate 1 for adjusting the fixing angle according to the inclination angle of the mounting bracket side wall and the position and inclination angle of the mounting screw holes opened on the surface of the mounting bracket.

[0021] In this embodiment, the traction hook fixing assembly 2 includes a first groove 21 opened on the top side wall of the base plate 1, a first electric slide rail 22 fixedly connected to the inner wall of the first groove 21, a first slide plate 23 slidably connected to the top side wall of the first electric slide rail 22, a first electric telescopic rod 24 fixedly connected to the top side wall of the first slide plate 23, and a first mounting plate 25 fixedly connected to the telescopic end of the first electric telescopic rod 24. A bent rod 26 is fixedly connected to the side wall of the first mounting plate 25. A second mounting plate 27 is fixedly connected to one end of the bent rod 26. A second electric slide rail 28 is fixedly connected to both the second mounting plate 27 and the inner wall of the first mounting plate 25. Multiple second slide plates 29 are slidably connected to the side walls of the second electric slide rail 28. A second electric telescopic rod 210 is fixedly connected to the side walls of the second slide plates 29. The telescopic ends of the second electric telescopic rod 210 are all fixedly connected to a first U-plate 211. The inner wall of the first U-plate 211 is rotatably connected to a first round rod 212. The side wall of the first U-plate 211 is fixedly connected to a first motor 213. The output end of the first motor 213 passes through the side wall of the first U-plate 211 and is fixedly connected to one end of the first round rod 212. The rod wall of the first round rod 212 is fixedly connected to a support rod 214. One end of the support rod 214 is fixedly connected to a clamping plate 215. The inner walls of both ends of the clamping plate 215 are symmetrically fixedly connected to two third electric telescopic rods 216. The telescopic ends of the third electric telescopic rods 216 are all fixedly connected to a first clamping plate 217.

[0022] Specifically, the first groove 21 is used to install and fix the first electric slide rail 22, providing an installation base for the traction hook fixing assembly 2; the first electric slide rail 22 is used to drive the first sliding plate 23 to move along its track, thereby driving the traction hook to adjust its front and rear position to adapt to the welding alignment with the mounting bracket; the first sliding plate 23 is used to support the first electric telescopic rod 24 and all the traction hook clamping related components above it, transmitting the moving power of the first electric slide rail 22; the first electric telescopic rod 24 is used to drive the first mounting plate 25 and the clamping components above it to move up and down, adjusting the height of the traction hook so that the traction hook and the part of the mounting bracket to be welded are on the same plane; the first mounting plate 25 is used for... The first mounting plate 25 and the second mounting plate 27 are used to install and fix the bent rod 26, which cooperates with the second mounting plate 27 to provide a mounting carrier for the second electric slide rail 28. The bent rod 26 connects the first mounting plate 25 and the second mounting plate 27 to form a symmetrical clamping structure, which can meet the clamping requirements of the traction hook. The second mounting plate 27 cooperates with the first mounting plate 25 to provide a mounting carrier for the second electric slide rail 28, and together they can achieve double-sided clamping of the traction hook. The second electric slide rail 28 drives the second sliding plate 29 to move along its track, adjusts the spacing of each second electric telescopic rod 210 and subsequent clamping components, and adapts to the size of different models of traction hooks. The second sliding plate 29 carries the second electric telescopic rod 210. The second electric slide rail 28 is used to transmit the moving power and adjust the position of the second electric telescopic rod 210. The second electric telescopic rod 210 is used to drive the first U-plate 211 and subsequent clamping components to move back and forth, so that the first clamping plate 217 can accurately fit against the outer wall of the front end of the traction hook. The first U-plate 211 is used to install and fix the first motor 213 and the first round rod 212, providing support for the rotation of the first round rod 212. The first round rod 212 is used to connect the first motor 213 and the support rod 214, transmitting the rotational power of the first motor 213 to drive the support rod 214 and the clamping plate 215 to rotate. The first motor 213 provides power for the rotation of the first round rod 212, thereby adjusting the position of the first U-plate 211 and subsequent clamping components to move back and forth, so that the first clamping plate 217 can accurately fit against the outer wall of the front end of the traction hook. The tilt angles of the clamping plate 215 and the first clamping plate 217 are adapted to the tilt angle of the front end of the traction hook; the support rod 214 is used to connect the first round rod 212 and the clamping plate 215, transmit rotational power, and drive the clamping plate 215 to rotate synchronously; the clamping plate 215 is used to install and fix the third electric telescopic rod 216, provide an installation carrier for the first clamping plate 217, and form a clamping structure; the third electric telescopic rod 216 is used to drive the first clamping plate 217 to move towards the traction hook, realize the clamping and fixing of the front end of the traction hook, and adjust the clamping force; the first clamping plate 217 directly contacts the outer wall of the front end of the traction hook, fixes the traction hook through clamping action, and prevents the traction hook from shifting during the welding process.

[0023] In this embodiment, the welding assembly 3 includes a movable slide plate 31 slidably connected to the top side wall of the first electric slide rail 22, a fourth electric telescopic rod 32 fixedly connected to the top side wall of the movable slide plate 31, an installation ring 33 fixedly connected to the telescopic end of the fourth electric telescopic rod 32, a third electric slide rail 34 fixedly connected to the inner wall of the installation ring 33, and a third slide plate 35 slidably connected to the side wall of the third electric slide rail 34. The side wall of the third slide plate 35 is fixedly connected to the second U-plate 36. The inner wall of the second U-plate 36 is rotatably connected to the second round rod 37. The side wall of the second U-plate 36 is fixedly connected to the second motor 38. The output end of the second motor 38 passes through the side wall of the second U-plate 36 and is fixedly connected to one end of the second round rod 37. The rod wall of the second round rod 37 is fixedly connected to the fifth electric telescopic rod 39. The telescopic end of the fifth electric telescopic rod 39 is fixedly connected to the MAG welding gun 310.

[0024] Specifically, the movable slide plate 31 carries the fourth electric telescopic rod 32 and the welding-related components above it. Driven by the first electric slide rail 22, it moves, adjusting the position of the mounting ring 33 and the MAG welding torch 310. The fourth electric telescopic rod 32 drives the mounting ring 33 up and down, adjusting its height so that it can be precisely aligned with one end of the traction hook, providing a guiding reference for welding. The mounting ring 33 is used to mount the traction hook, providing positioning and guidance, and also providing a mounting carrier for the third electric slide rail 34. The third electric slide rail 34 drives the third slide plate 35 to move along its track, moving the MAG welding torch 310 along the weld direction to achieve full-process welding of the weld. The third slide plate 35 carries the second U-plate 36 and subsequent welding torch components, transferring... The third electric slide rail 34 provides the power for movement; the second U-plate 36 is used to mount and fix the second motor 38 and the second round rod 37, providing support for the rotation of the second round rod 37; the second round rod 37 is used to connect the second motor 38 and the fifth electric telescopic rod 39, transmitting the rotational power of the second motor 38 and adjusting the welding angle of the MAG welding torch 310; the second motor 38 provides power for the rotation of the second round rod 37, thereby adjusting the orientation of the welding end of the MAG welding torch 310 so that the welding torch is accurately aligned with the weld; the fifth electric telescopic rod 39 is used to drive the MAG welding torch 310 to move back and forth, adjusting the distance between the welding torch and the weld to ensure welding quality; the MAG welding torch 310, as the core component of automatic arc welding, is used to perform arc welding on the contact part between the traction hook and the mounting bracket to complete the welding operation.

[0025] In this embodiment, the mounting bracket fixing assembly 4 includes a connecting plate 41 fixedly connected to the top side wall of the base plate 1. Two third U plates 42 are symmetrically fixedly connected to the inner walls of both ends of the connecting plate 41. A third round rod 43 is rotatably connected to the inner wall of the third U plate 42. A third motor 44 is fixedly connected to the side wall of the third U plate 42. The output end of the third motor 44 passes through the side wall of the third U plate 42 and is fixedly connected to one end of the third round rod 43. The third round rod 43 is fixedly connected to the rod wall of the sixth electric telescopic rod 45. The telescopic end of the sixth electric telescopic rod 45 is fixedly connected to the second clamping plate 46. The inner wall of the connecting plate 41 is provided with a second groove 47. The inner wall of the second groove 47 is fixedly connected to the fifth electric slide rail 48. The side wall of the fifth electric slide rail 48 is slidably connected to two fifth sliding plates 49. The side wall of the fifth sliding plate 49 is fixedly connected to a connecting block 410. The inner wall of the connecting block 410 is fixedly connected to a fourth electric slide rail 411. The side walls of the fourth electric slide rail 411 are slidably connected to two fourth slide plates 412. The side walls of the fourth slide plates 412 are fixedly connected to a fourth U-plate 413. The inner wall of the fourth U-plate 413 is rotatably connected to a fourth round rod 414. The side wall of the fourth U-plate 413 is fixedly connected to a fourth motor 415. The output end of the fourth motor 415 passes through the side wall of the fourth U-plate 413 and is fixedly connected to one end of the fourth round rod 414. The rod wall of the fourth round rod 414 is provided with a third groove 416. The inner wall of the third groove 416 is fixedly connected to a fifth motor 417. The output end of the fifth motor 417 is fixedly connected to a seventh electric telescopic rod 418. The telescopic end of the seventh electric telescopic rod 418 is fixedly connected to a mounting screw 419.

[0026] Specifically, the connecting plate 41 is used to install and fix the third U-plate 42, the second groove 47, and other related components of the mounting bracket fixing assembly 4, providing a foundation for the placement and fixing of the mounting bracket; the third U-plate 42 is used to install and fix the third motor 44 and the third round rod 43, providing support for the rotation of the third round rod 43; the third round rod 43 is used to connect the third motor 44 and the sixth electric telescopic rod 45, transmitting the rotational power of the third motor 44 to drive the sixth electric telescopic rod 45 and the second clamping plate 46 to rotate; the third motor 44 provides power for the rotation of the third round rod 43, thereby adjusting the tilt angle of the second clamping plate 46 to adapt to the tilt angle of the side wall of the mounting bracket; the sixth electric telescopic rod 45 is used to drive the second The clamping plate 46 moves towards the mounting bracket to achieve initial clamping and positioning of the side wall of the mounting bracket; the second clamping plate 46 directly contacts the side wall of the mounting bracket and initially fixes the mounting bracket through clamping to prevent displacement of the mounting bracket during welding; the second groove 47 is used to install and fix the fifth electric slide rail 48, providing an installation base for adjusting the position of the mounting screw 419; the fifth electric slide rail 48 is used to drive the fifth sliding plate 49 to move along its track, driving the connecting block 410 and subsequent mounting screw 419 related components to adjust their positions to match the lateral position of the mounting screw holes on the mounting bracket; the fifth sliding plate 49 is used to support the connecting block 410 and transmit the moving power of the fifth electric slide rail 48; the connecting block 410... 10: Used to install and fix the fourth electric slide rail 411, providing an installation carrier for the fourth electric slide rail 411; Fourth electric slide rail 411: Used to drive the fourth slide plate 412 to move along its track, driving the fourth U plate 413 and subsequent mounting screws 419 and related components to adjust their positions, adapting to the longitudinal position of the mounting screw holes on the mounting bracket; Fourth slide plate 412: Used to support the fourth U plate 413, transmitting the moving power of the fourth electric slide rail 411; Fourth U plate 413: Used to install and fix the fourth motor 415 and the fourth round rod 414, providing support for the rotation of the fourth round rod 414; Fourth round rod 414: Used to connect the fourth motor 415 with the fifth motor 417 and the seventh electric telescopic rod 418, transmitting the power of the fourth motor 415 to the fifth motor 417 and the seventh electric telescopic rod 418, transmitting the power of the fourth motor 415 to the fifth motor 417 and the seventh electric telescopic rod 418, transmitting the power of the fourth motor 415 to the fifth motor 417 and the seventh electric telescopic rod 418, transmitting the power of the fourth motor 415 to the fifth motor 417 and the seventh electric telescopic rod 418, transmitting the power of the fourth motor 415 to the fourth motor 417 and the fourth ...9, providing support for the rotation of the The rotational power of the fourth motor 415 adjusts the tilt angle of the mounting screw 419; the fourth motor 415 provides power for the rotation of the fourth round rod 414, thereby adjusting the tilt angle of the mounting screw 419 to match the tilt angle of the mounting screw hole on the mounting bracket; the third groove 416 is used to install and fix the fifth motor 417, providing installation space for the fifth motor 417; the fifth motor 417 provides power for the rotation of the mounting screw 419, driving the mounting screw 419 to rotate, so that the mounting screw 419 can be screwed into the mounting screw hole; the seventh electric telescopic rod 418 is used to drive the mounting screw 419 to move towards the mounting screw hole, pushing the mounting screw 419 into the screw hole, thereby achieving further limiting and fixing of the mounting bracket;Mounting screw 419: By screwing into the mounting screw hole on the surface of the mounting bracket, it limits and fixes the mounting bracket, and together with the second clamping plate 46, it improves the fixing stability of the mounting bracket and prevents displacement during welding.

[0027] The operating principle of the present invention is described as follows: When it is necessary to weld the traction hook to the mounting bracket, firstly, the second electric slide rail 28 on the inner wall of the first mounting plate 25 and the second mounting plate 27 is started. The second electric slide rail 28 drives the corresponding second slide plate 29 to move along the slide rail direction, so that the spacing and position of each second electric telescopic rod 210 accurately corresponds to the contour distribution of the outer wall of the front end of the traction hook, ensuring the adaptability of the subsequent clamping action. Then, the first motor 213 is started, and the output end of the first motor 213 drives the first round rod 212 to rotate around the inner wall of the first U plate 211. During the rotation of the first round rod 212, the support rod 214 fixed on its rod wall and the clamping plate 215 at the end of the support rod 214 are rotated synchronously. When the first clamping plate 217 in the clamping plate 215 is completely aligned with the tilt angle of the outer wall of the traction hook, the first motor 213 is turned off. At this time, the position and tilt angle of the multiple clamping plates 215 are precisely matched with the front end shape of the traction hook to be welded. Afterwards, the staff placed the towing hook in the preset clamping area between the first mounting plate 25 and the second mounting plate 27, and activated the second electric telescopic rod 210 at the corresponding position, so that the first clamping plate 217 in each clamping plate 215 moved to the corresponding side of the outer wall of the front end of the towing hook, ensuring that the first clamping plate 217 fits tightly with the outer wall of the towing hook without deviation; then the third electric telescopic rod 216 was activated, and the telescopic end of the third electric telescopic rod 216 drove the first clamping plate 217 to move towards the towing hook. By utilizing the synergistic clamping effect of multiple first clamping plates 217, the front end of the towing hook is firmly fixed. This clamping structure can flexibly adjust the position and tilt angle of the first clamping plate 217 according to the size and front contour shape of different models of towing hooks through the coordinated adjustment of the second electric slide rail 28, the first motor 213 and the third electric telescopic rod 216, without the need for the staff to replace the corresponding fasteners according to the towing hook model, effectively avoiding the reduction in welding efficiency caused by the replacement of fasteners; After the traction hook is fixed, the worker places the mounting bracket into the preset installation area on the inner wall of the connecting plate 41, starts the third motor 44, and drives the third round rod 43 to rotate around the inner wall of the third U-plate 42. During the rotation of the third round rod 43, the sixth electric telescopic rod 45 and the second clamping plate 46, which are fixed to its rod wall, rotate synchronously. When the tilt angle of the second clamping plate 46 precisely corresponds to the tilt angle of the side wall of the mounting bracket, the third motor 44 is turned off. Then, the sixth electric telescopic rod 45 is started, and the telescopic end of the sixth electric telescopic rod 45 drives the second clamping plate 46 to move towards the side wall of the mounting bracket. The second clamping plate 46 is used to initially clamp and position the side wall of the mounting bracket to prevent displacement of the mounting bracket during welding. After initial positioning, activate the fifth electric slide rail 48 and the fourth electric slide rail 411. The fifth electric slide rail 48 drives the fifth sliding plate 49 to move, and the fourth electric slide rail 411 drives the fourth sliding plate 412 to move, thereby moving the mounting screw 419 to the corresponding side of the preset mounting screw hole on the surface of the mounting bracket, ensuring that the central axis of the mounting screw 419 and the mounting screw hole are initially aligned. Then, activate the fourth motor 415, which drives the fourth round rod 414 to rotate around the inner wall of the fourth U-plate 413, adjusting the tilt angle of the mounting screw 419. When the tilt angle of the mounting screw 419 is completely consistent with the tilt angle of the mounting screw hole on the surface of the mounting bracket, turn off the fourth motor 415. Activate the seventh electric extension... The telescopic rod 418, driven by the telescopic end of the seventh electric telescopic rod 418, moves the mounting screw 419 toward the mounting screw hole. At the same time, the fifth motor 417 is activated, which drives the mounting screw 419 to rotate, so that the mounting screw 419 is precisely screwed into the mounting screw hole. The mounting screw 419 is used to further limit and fix the mounting bracket. This fixing structure can flexibly adjust the position and angle of the second clamping plate 46 and the mounting screw 419 according to the inclination angle of the side wall of the mounting bracket, the position and inclination angle of the mounting screw hole, through the coordinated adjustment of the third motor 44, the fifth electric slide rail 48, the fourth electric slide rail 411 and the fourth motor 415, without the need for the staff to change the fixing parts according to the mounting bracket model. After the traction hook and mounting bracket are fixed, the first electric telescopic rod 24 is activated. The telescopic end of the first electric telescopic rod 24 drives the traction hook upward, precisely adjusting the height of the traction hook so that the contact area between the traction hook and the mounting bracket to be welded is on the same horizontal plane, ensuring the flatness of the weld joint and providing a guarantee for the quality of subsequent arc welding. Then, the fourth electric telescopic rod 32 is activated. The telescopic end of the fourth electric telescopic rod 32 drives the mounting ring 33 to move, so that the center position of the mounting ring 33 is precisely aligned with one end of the traction hook. The first electric slide rail 22 is activated. The first electric slide rail 22 drives the first sliding plate 23 to move the traction hook towards the mounting bracket, so that one end of the traction hook passes through the mounting ring 33 until one end of the traction hook is in close contact with the side wall of the mounting bracket to be welded. Then, the movement of the first sliding plate 23 is stopped. Then, the first electric slide rail 22 is activated again to drive the moving sliding plate 31 to move, moving the mounting ring 33 closer to the mounting bracket. After positioning is completed, the second motor 38 is started, and the output end of the second motor 38 drives the second round rod 37 to rotate around the inner wall of the second U plate 36, adjusting the welding end orientation of the MAG welding gun 310 so that the welding end of the MAG welding gun 310 is precisely aligned with the contact weld between the traction hook and the mounting bracket. The fifth electric telescopic rod 39 is started, and the telescopic end of the fifth electric telescopic rod 39 drives the MAG welding gun 310 to move towards the weld area until the welding end of the MAG welding gun 310 reaches the preset welding position. The MAG welding gun 310 is then started to perform automatic arc welding. During the welding process, the third electric slide rail 34 is started simultaneously, and the third electric slide rail 34 drives the third slide plate 35 to move the MAG welding gun 310 at a constant speed along the weld direction, realizing fully automated welding of the weld at the contact area between the traction hook and the mounting bracket, ensuring uniform weld formation and stable welding quality. After the welding operation is completed, the MAG welding torch 310 is turned off, and the third electric telescopic rod 216 is retracted, causing the first clamping plate 217 to release its clamping fixation on the traction hook. The first electric slide rail 22 is activated, driving the first sliding plate 23 and the moving sliding plate 31 to move in opposite directions, causing the mounting ring 33 to move out from one end of the traction hook, thus avoiding interference with the workpiece handling. Subsequently, the sixth electric telescopic rod 45 is retracted, and the fifth motor 417 rotates in the opposite direction, causing the second clamping plate 46 to release its clamping fixation on the mounting bracket, and the mounting screw 419 to exit from the mounting screw hole and return to its initial position. Finally, the worker removes the welded mounting bracket and traction hook as a whole, thus completing the automatic welding operation of a single traction hook and mounting bracket. The entire process realizes the automated linkage of workpiece positioning, clamping, welding, and loosening, effectively improving welding efficiency and welding quality, and adapting to the needs of mass production.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A robotic automatic welding device for a towing hook used in a new energy vehicle chassis, comprising a base plate (1), characterized in that, The top side wall of the base plate (1) is provided with a traction hook fixing assembly (2) for fixing the traction hook. Above the traction hook fixing assembly (2) is a welding assembly (3) for welding the traction hook and the mounting bracket. The top side wall of the base plate (1) is fixedly connected with a mounting bracket fixing assembly (4) for adjusting the fixing angle according to the inclination angle of the mounting bracket side wall and the position and inclination angle of the mounting screw holes opened on the surface of the mounting bracket.

2. The robotic automatic welding device for a traction hook for a new energy vehicle chassis according to claim 1, characterized in that, The traction hook fixing assembly (2) includes a first groove (21) opened on the top side wall of the base plate (1), a first electric slide rail (22) is fixedly connected to the inner wall of the first groove (21), a first slide plate (23) is slidably connected to the top side wall of the first electric slide rail (22), a first electric telescopic rod (24) is fixedly connected to the top side wall of the first slide plate (23), and a first mounting plate (25) is fixedly connected to the telescopic end of the first electric telescopic rod (24).

3. The robotic automatic welding device for a traction hook for a new energy vehicle chassis according to claim 2, characterized in that, A bent rod (26) is fixedly connected to the side wall of the first mounting plate (25). A second mounting plate (27) is fixedly connected to one end of the bent rod (26). A second electric slide rail (28) is fixedly connected to the inner wall of the second mounting plate (27) and the first mounting plate (25). A plurality of second slide plates (29) are slidably connected to the side wall of the second electric slide rail (28). A second electric telescopic rod (210) is fixedly connected to the side wall of the second slide plate (29).

4. The robotic automatic welding device for a traction hook for a new energy vehicle chassis according to claim 3, characterized in that, The telescopic ends of the second electric telescopic rod (210) are all fixedly connected to a first U-plate (211). The inner wall of the first U-plate (211) is rotatably connected to a first round rod (212). The side wall of the first U-plate (211) is fixedly connected to a first motor (213). The output end of the first motor (213) passes through the side wall of the first U-plate (211) and is fixedly connected to one end of the first round rod (212). The rod wall of the first round rod (212) is fixedly connected to a support rod (214). One end of the support rod (214) is fixedly connected to a clamping plate (215). The inner walls of the two ends of the clamping plate (215) are symmetrically fixedly connected to two third electric telescopic rods (216). The telescopic ends of the third electric telescopic rods (216) are all fixedly connected to a first clamping plate (217).

5. The robotic automatic welding device for a traction hook for a new energy vehicle chassis according to claim 2, characterized in that, The welding assembly (3) includes a movable slide plate (31) slidably connected to the top side wall of the first electric slide rail (22), a fourth electric telescopic rod (32) fixedly connected to the top side wall of the movable slide plate (31), an installation ring (33) fixedly connected to the telescopic end of the fourth electric telescopic rod (32), a third electric slide rail (34) fixedly connected to the inner wall of the installation ring (33), and a third slide plate (35) slidably connected to the side wall of the third electric slide rail (34).

6. The robotic automatic welding device for a traction hook for a new energy vehicle chassis according to claim 5, characterized in that, The side wall of the third slide plate (35) is fixedly connected to a second U-plate (36), the inner wall of the second U-plate (36) is rotatably connected to a second round rod (37), the side wall of the second U-plate (36) is fixedly connected to a second motor (38), the output end of the second motor (38) passes through the side wall of the second U-plate (36) and is fixedly connected to one end of the second round rod (37), the rod wall of the second round rod (37) is fixedly connected to a fifth electric telescopic rod (39), and the telescopic end of the fifth electric telescopic rod (39) is fixedly connected to a MAG welding gun (310).

7. The robotic automatic welding device for a traction hook for a new energy vehicle chassis according to claim 1, characterized in that, The mounting bracket fixing assembly (4) includes a connecting plate (41) fixedly connected to the top side wall of the base plate (1). Two third U plates (42) are symmetrically fixedly connected to the inner walls of both ends of the connecting plate (41). A third round rod (43) is rotatably connected to the inner wall of the third U plate (42). A third motor (44) is fixedly connected to the side wall of the third U plate (42). The output end of the third motor (44) passes through the side wall of the third U plate (42) and is fixedly connected to one end of the third round rod (43).

8. The robotic automatic welding device for a traction hook for a new energy vehicle chassis according to claim 7, characterized in that, The third round rod (43) is fixedly connected to the wall of the rod with a sixth electric telescopic rod (45). The telescopic end of the sixth electric telescopic rod (45) is fixedly connected to a second clamping plate (46). The inner wall of the connecting plate (41) is provided with a second groove (47). The inner wall of the second groove (47) is fixedly connected to a fifth electric slide rail (48). The side wall of the fifth electric slide rail (48) is slidably connected to two fifth sliding plates (49). The side wall of the fifth sliding plate (49) is fixedly connected to a connecting block (410).

9. The robotic automatic welding device for a traction hook for a new energy vehicle chassis according to claim 8, characterized in that, The inner wall of the connecting block (410) is fixedly connected to a fourth electric slide rail (411). The side walls of the fourth electric slide rail (411) are slidably connected to two fourth slide plates (412). The side walls of the fourth slide plates (412) are fixedly connected to a fourth U-plate (413). The inner wall of the fourth U-plate (413) is rotatably connected to a fourth round rod (414). The side wall of the fourth U-plate (413) is fixedly connected to a fourth motor (415).

10. The robotic automatic welding device for a traction hook for a new energy vehicle chassis according to claim 9, characterized in that, The output end of the fourth motor (415) passes through the side wall of the fourth U plate (413) and is fixedly connected to one end of the fourth round rod (414). The fourth round rod (414) has a third groove (416) on its rod wall. The inner wall of the third groove (416) is fixedly connected to the fifth motor (417). The output end of the fifth motor (417) is fixedly connected to the seventh electric telescopic rod (418). The telescopic end of the seventh electric telescopic rod (418) is fixedly connected to the mounting screw (419).

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