Automatic welding device for automobile parts

Abstract

The present invention belongs to the technical field of automobile parts processing, and in particular, is an automatic welding device for automobile parts, comprising a base and a support frame fixed on the surface of the base, wherein a surrounding component is arranged between the base and the support frame. The device is provided with the surrounding component, so that a welding gun can be driven to perform surrounding welding around the joints of two groups of automobile parts, thereby improving the uniformity of welding, ensuring that welds are evenly distributed at the joints of the two groups of automobile parts, forming a continuous weld at the joint, greatly enhancing the firmness of the connection, ensuring the consistency of welding strength, avoiding the occurrence of local weak or excessive welding, improving the overall welding quality, being able to disperse stress more evenly, reducing the risk of parts cracking due to stress concentration, and having a high degree of automation, being suitable for operation by automatic welding equipment, realizing a continuous and efficient welding process, reducing manual intervention, shortening the production cycle, and improving production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts processing, and in particular relates to an automatic welding device for automobile parts. Background Art

[0002] Auto parts are the units that make up the whole of auto parts processing, as well as the products that serve auto parts processing. As the foundation of the automotive industry, auto parts are a necessary factor to support the sustainable and healthy development of the automotive industry. In particular, the current independent development and innovation that is being carried out vigorously in the automotive industry requires a strong parts system to support it. However, due to assembly requirements, auto parts require welding and assembly of two different auto parts, which requires welding equipment.

[0003] Although the existing welding devices in life meet the needs of users to a certain extent, there are still certain defects in the use process. The specific problems are as follows: the existing welding methods of automobile parts mostly rely on manual operation, and there are problems such as uneven welding, discontinuous weld distribution, and inconsistent welding strength, which can easily lead to local weak or too strong welding, making it difficult to ensure the firmness of the connection, and the overall welding quality is unstable. At the same time, manual welding is also prone to the risk of parts cracking due to stress concentration, low production efficiency, and long production cycle, which cannot meet the high-efficiency and high-quality production needs of the modern automobile manufacturing industry;

[0004] In order to solve the above problems, this application proposes an automatic welding device for automobile parts. Summary of the invention

[0005] The present invention provides an automatic welding device for automobile parts, which can effectively solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an automatic welding device for automobile parts, comprising a base and a support frame fixed on the surface of the base;

[0007] A surrounding assembly is arranged between the base and the support frame, and the surrounding assembly includes two groups of lifting push rods fixed on the surface of the support frame, a fixing frame fixed between the output ends of the two groups of lifting push rods, and a supporting frame, a surrounding sleeve, a surrounding gear disc and a welding gun for automatically welding around the surface of automobile parts;

[0008] A clamping assembly is provided on one side of the support frame near the welding gun, and the clamping assembly includes a clamping motor screwed to the surface of the fixing frame, a transmission shaft rotatably connected to the inside of the fixing frame, and a threaded rod, a clamping seat, a threaded block and a clamping plate for clamping and positioning automobile parts;

[0009] Feeding components are symmetrically installed on both sides of the surface of the base, and the feeding components include a conveying frame symmetrically fixed on both sides of the base surface, a conveying motor screwed to the surface of the conveying frame, and a pushing gear frame, a fixed gear frame, a feeding frame and a touch switch for feeding automotive parts.

[0010] As a preferred embodiment of an automated welding device for automotive parts of the present invention, two groups of surrounding sleeves with a semi-annular structure are arranged below the fixed frame, three groups of supporting frames are fixed on opposite sides of the two groups of surrounding sleeves, and one group of the supporting frames is fixedly connected to the fixed frame, a surrounding toothed disc is slidably connected inside the surrounding sleeve, and a welding gun is screwed between opposite sides of the two groups of surrounding toothed discs.

[0011] As a preferred embodiment of an automated welding device for automobile parts of the present invention, a limit strip is fixed to the inner wall surface of the surrounding toothed disc, and a limit groove matched with the limit strip is opened inside the surrounding sleeve, and a rotating shaft is rotatably connected inside the support bracket, and surrounding gears are symmetrically fixed at both ends of the surface of the rotating shaft, and the surrounding gears are meshingly connected with the surrounding toothed disc, and one end of the three groups of rotating shafts respectively penetrates the interior of the corresponding support bracket, and respectively extends to the outside of the support bracket, and is connected by a transmission chain arranged on the outside of the support bracket.

[0012] As a preferred automated welding device for automobile parts of the present invention, one group of surface screws of the support bracket is connected to a surrounding motor, a bevel gear transmission group 1 is fixed to the output end of the surrounding motor, and the other end of the bevel gear transmission group 1 is fixedly connected to the end of the rotating shaft that is rotatably connected inside the support bracket.

[0013] As a preferred embodiment of an automated welding device for automobile parts of the present invention, threaded rods are symmetrically arranged at both ends of the transmission shaft, a clamping seat is fixed to the surface of the support bracket close to one side of the threaded rod, the threaded rod is rotatably connected to the inside of the clamping seat, a threaded block is arranged inside the clamping seat, and the threaded block is threadedly connected to the surface of the threaded rod, and clamping plates are symmetrically arranged on both sides below the clamping seat.

[0014] As a preferred embodiment of an automated welding device for automobile parts of the present invention, a worm gear is fixed to the output end of the clamping motor, the other end of the worm gear is fixedly connected to the transmission shaft, both ends of the transmission shaft pass through the interior of the fixing frame, and extend to both sides of the fixing frame respectively, and are fixedly connected to bevel gear transmission group 2 arranged on both sides of the fixing frame respectively, and the other end of the bevel gear transmission group 2 is fixedly connected to the threaded rod.

[0015] As a preferred embodiment of an automated welding device for automobile parts of the present invention, connecting rods 1 are symmetrically hinged at both ends of the threaded block, the middle part of the connecting rod 1 is hinged to the clamping seat, the other end of the connecting rod 1 is hinged to the clamping plate, and connecting rod 2 is hinged between the clamping plate and the clamping seat, and a plurality of groups of rollers arranged equidistantly are fixed to the inner wall surfaces on opposite sides of the two groups of clamping plates.

[0016] As a preferred embodiment of an automated welding device for automobile parts of the present invention, a pushing gear rack is arranged inside the conveying frame, fixed gear racks are symmetrically arranged on both sides of the pushing gear rack, a material unloading rack is fixed on one side of the two groups of fixed gear racks close to the support frame, a slot is opened at the end of the material unloading rack, and a touch switch is fixed on one side of the material unloading rack close to the slot.

[0017] As a preferred embodiment of an automated welding device for automobile parts of the present invention, conveying shafts are rotatably connected to the inner sides of the conveying frame, and a synchronous chain is connected between the two groups of the conveying shafts, and the output end of the conveying motor is fixedly connected to one group of the conveying shafts, a connecting plate is provided between the two groups of the conveying shafts, and push-pull plates are rotatably connected to the four corners of the connecting plate, and the other end of the push-pull plate is fixedly connected to the conveying shaft.

[0018] As a preferred embodiment of an automated welding device for automotive parts of the present invention, threaded plates are symmetrically fixed on opposite sides of the two groups of fixed gear racks, a bidirectional screw rod is rotatably connected between the two conveying racks, and the two groups of threaded plates are threadedly connected to the bidirectional screw rod, a hand wheel is fixed at one end of the bidirectional screw rod, two groups of connecting racks are symmetrically fixed on opposite sides of the two groups of fixed gear racks, a positioning guide rail is fixed on the lower surface of the connecting rack, a support plate is fixed on the lower surface of the positioning guide rail, and the support plate is fixed to the surface of the conveying rack, a pushing cylinder is fixed on the side of the base surface close to the unloading rack, and a pushing plate is fixed to the output end of the pushing cylinder.

[0019] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0020] 1. A surrounding component is provided, which can drive the welding gun to perform surrounding welding around the joints of two groups of automotive parts, thereby improving the uniformity of welding, ensuring that the welds are evenly distributed at the joints of the two groups of automotive parts, and forming a continuous weld at the joint, greatly enhancing the firmness of the connection, ensuring the consistency of the welding strength, avoiding the situation of local weak or excessive welding, improving the overall welding quality, and being able to disperse the stress more evenly, reducing the risk of parts cracking due to stress concentration, and having a high degree of automation, suitable for operation by automated welding equipment, which can realize a continuous and efficient welding process, reduce manual intervention, shorten the production cycle, and improve production efficiency.

[0021] 2. A clamping assembly is provided to clamp and position two parts at the same time, thereby ensuring that the two parts are in the correct position during welding, avoiding misalignment, offset, etc., thereby improving welding accuracy, ensuring that the relative angle of the two parts is fixed, making the angle of the weld meet the design requirements, ensuring the consistency of welding quality, and the parts after clamping and positioning are more stable during the welding process, reducing the possibility of safety accidents caused by the movement of parts.

[0022] 3. It is equipped with a feeding assembly that can intermittently and step-by-step conveying of automotive parts. The feeding speed is uniform and controllable, and the parts can be quickly and accurately conveyed to the welding position, reducing waiting time and eliminating the need for manual feeding. This not only ensures that operators do not need to frequently approach the welding area for feeding operations, but also reduces the risk of injury from dangerous factors such as welding sparks and high temperatures. It also enables the welding process to continue, greatly improving production efficiency, and ensuring that each part can be accurately delivered to the welding position, ensuring the consistency and accuracy of welding, and improving welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the surrounding component and the clamping component in the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the surround assembly in the present invention;

[0027] Figure 4 is a cross-sectional view of a surrounding component in the present invention;

[0028] Figure 5 It is a cross-sectional view of the surrounding sleeve and the surrounding toothed disc in the present invention;

[0029] Figure 6 It is a structural schematic diagram of the clamping assembly in the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the support bracket and the clamping seat in the present invention;

[0031] Figure 8 is a cross-sectional view of the fixing frame and the transmission shaft in the present invention;

[0032] Fig. 9 It is a structural schematic diagram of the feeding assembly in the present invention;

[0033] Fig.10 It is a partial structural schematic diagram of the feeding assembly in the present invention;

[0034] Fig.11 It is a schematic diagram of the structure of the fixed gear rack and the unloading rack in the present invention.

[0035] In the figure: 1, base; 2, support frame; 3, surrounding assembly; 31, lifting push rod; 32, fixed frame; 33, supporting frame; 34, surrounding sleeve; 35, surrounding toothed disc; 36, surrounding gear; 37, rotating shaft; 38, transmission chain; 39, surrounding motor; 310, bevel gear transmission group 1; 311, welding gun; 312, limit strip; 4, clamping assembly; 41, clamping motor; 42, worm gear; 43, transmission shaft; 44, bevel gear transmission group 2; 45, threaded rod; 46, clamping seat; 47, threaded block; 48. Connecting rod one; 49. Connecting rod two; 410. Clamping plate; 411. Roller; 5. Feeding assembly; 51. Conveying frame; 52. Conveying motor; 53. Conveying shaft; 54. Synchronous chain; 55. Pushing swing plate; 56. Connecting plate; 57. Pushing gear rack; 58. Fixed gear rack; 59. Threaded plate; 510. Bidirectional screw rod; 511. Hand wheel; 512. Unloading frame; 513. Touch switch; 514. Connecting frame; 515. Positioning guide rail; 516. Support plate; 517. Pushing cylinder; 518. Pushing plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0037] Example: Figure 1-Figure 11 As shown, the present invention provides a technical solution, an automatic welding device for automobile parts, comprising a base 1 and a support frame 2 fixed on the surface of the base 1;

[0038] A surrounding assembly 3 is arranged between the base 1 and the support frame 2, and the surrounding assembly 3 includes a lifting push rod 31, a fixing frame 32, a supporting frame 33, a surrounding sleeve 34, a surrounding toothed disc 35, a surrounding gear 36, a rotating shaft 37, a transmission chain 38, a surrounding motor 39, a bevel gear transmission group 1 310, a welding gun 311 and a limit bar 312;

[0039] The surface of the support frame 2 is screwed with two groups of lifting push rods 31, and a fixing frame 32 is fixed between the output ends of the two groups of lifting push rods 31. Two groups of surrounding sleeves 34 with a semi-annular structure are arranged below the fixing frame 32. Three groups of supporting brackets 33 are fixed on the opposite sides of the two groups of surrounding sleeves 34, and one group of supporting brackets 33 is fixedly connected to the fixing frame 32. The surrounding sleeve 34 is internally slidably connected with a surrounding toothed disk 35, and the inner wall surface of the surrounding toothed disk 35 is fixed with a limiting strip 312, and the interior of the surrounding sleeve 34 is provided with a limiting groove adapted to the limiting strip 312, and the interior of the supporting bracket 33 is rotatably connected with a rotating shaft 37, and the surface of the rotating shaft 37 is fixedly connected to the rotating shaft 37. Surrounding gears 36 are symmetrically fixed at both ends, and the surrounding gears 36 are meshed and connected with the surrounding toothed discs 35. One end of the three sets of rotating shafts 37 respectively penetrates the interior of the corresponding supporting brackets 33, and respectively extends to the outside of the supporting brackets 33, and is connected through a transmission chain 38 arranged on the outside of the supporting brackets 33. A surface of one set of the supporting brackets 33 is screwed with a surrounding motor 39, and a bevel gear transmission group 310 is fixed to the output end of the surrounding motor 39, and the other end of the bevel gear transmission group 310 is fixedly connected to the end of the rotating shaft 37 rotatably connected to the inside of the supporting bracket 33, and a welding gun 311 is screwed between the opposite sides of the two sets of surrounding toothed discs 35.

[0040] A clamping assembly 4 is provided on one side of the support frame 2 near the welding gun 311, and the clamping assembly 4 includes a clamping motor 41, a worm gear 42, a transmission shaft 43, a second bevel gear transmission group 44, a threaded rod 45, a clamping seat 46, a threaded block 47, a connecting rod 1 48, a connecting rod 2 49, a clamping plate 410 and a roller 411;

[0041] A clamping motor 41 is screwed to the middle of the surface of the fixing frame 32, and a worm gear 42 is fixed to the output end of the clamping motor 41. A transmission shaft 43 is fixed to the other end of the worm gear 42, and the transmission shaft 43 is rotatably connected to the inside of the fixing frame 32. Both ends of the transmission shaft 43 penetrate the inside of the fixing frame 32 and extend to both sides of the fixing frame 32 respectively, and are respectively fixedly connected to the bevel gear transmission group 2 44 arranged on both sides of the fixing frame 32. A threaded rod 45 is fixed to the other end of the supporting frame 33 near the threaded rod 45. A clamping seat 46 is fixed on the surface, a threaded rod 45 is rotatably connected to the inside of the clamping seat 46, a threaded block 47 is provided inside the clamping seat 46, and the threaded block 47 is threadedly connected to the surface of the threaded rod 45, connecting rods 48 are symmetrically hinged at both ends of the threaded block 47, the middle part of the connecting rod 48 is hinged to the clamping seat 46, a clamping plate 410 is hinged at the other end of the connecting rod 48, and a connecting rod 2 49 is hinged between the clamping plate 410 and the clamping seat 46, and a plurality of groups of rollers 411 arranged equidistantly are fixed to the inner wall surfaces on the opposite sides of the two groups of clamping plates 410.

[0042] The feeding components 5 are symmetrically installed on both sides of the surface of the base 1, and the feeding components 5 include a conveying frame 51, a conveying motor 52, a conveying shaft 53, a synchronous chain 54, a push swing plate 55, a connecting plate 56, a pushing gear frame 57, a fixed gear frame 58, a threaded plate 59, a bidirectional screw rod 510, a hand wheel 511, a discharge frame 512, a touch switch 513, a connecting frame 514, a positioning guide rail 515, a support plate 516, a pushing cylinder 517 and a pushing plate 518.

[0043] Two conveying frames 51 are symmetrically fixed on both sides of the surface of the base 1, and conveying shafts 53 are rotatably connected on both sides between the two conveying frames 51, and a synchronous chain 54 is connected between the two groups of conveying shafts 53. A conveying motor 52 is screwed to one side of the surface of the conveying frame 51, and the output end of the conveying motor 52 is fixedly connected to one group of conveying shafts 53. A connecting plate 56 is arranged between the two groups of conveying shafts 53, and the four corners of the connecting plate 56 are rotatably connected with a push swing plate 55, and the other end of the push swing plate 55 is fixedly connected to the conveying shaft 53. Pushing gear racks 57 are symmetrically fixed on both sides of the top of the connecting plate 56, and fixed gear racks 58 are symmetrically arranged on both sides of the pushing gear rack 57. Threaded plates 59 are symmetrically fixed on the opposite sides of the two groups of fixed gear racks 58. A bidirectional screw rod 510 is rotatably connected between the two conveying frames 51, and the two groups of threaded plates 59 are all threadedly connected with the bidirectional screw rod 510, one end of which is fixed with a hand wheel 511, two groups of connecting frames 514 are symmetrically fixed on the opposite sides of the two groups of fixed gear racks 58, the lower surface of the connecting frame 514 is fixed with a positioning guide rail 515, the lower surface of the positioning guide rail 515 is fixed with a support plate 516, and the support plate 516 is fixed to the surface of the conveying frame 51, and a discharge rack 512 is fixed on the side of the two groups of fixed gear racks 58 close to the support frame 2, a card slot is provided at the end of the discharge rack 512, and a touch switch 513 is fixed on the side of the discharge rack 512 close to the card slot, and a push cylinder 517 is fixed on the side of the surface of the base 1 close to the discharge rack 512, a push plate 518 is fixed to the output end of the push cylinder 517, and the touch switch 513 is electrically connected to the lifting push rod 31 and the push cylinder 517 respectively.

[0044] When it is necessary to weld automobile parts, the conveying motor 52 is first started, and the conveying motor 52 drives the two sets of conveying shafts 53 to rotate inside the conveying frame 51 through the synchronous chain 54, thereby driving the push swing plate 55 to rotate around the conveying shaft 53, thereby driving the connecting plate 56 and the pushing gear rack 57 to move reciprocatingly upward and forward at the same time, so that the automobile parts to be welded can be lifted up from the tooth groove storage position inside the two sets of fixed gear racks 58 and lifted to a certain height, so that they are separated from the surface of the fixed gear rack 58, and then lifted forward by the pushing gear rack 57 for a specific step distance, and then the movement of the push swing plate 55 can drive the connecting plate 56 and the pushing gear rack 57 to fall back and reset, thereby intermittently and step-by-step conveying of automobile parts, the feeding speed is uniform and controllable, and the parts can be quickly and accurately conveyed to the welding position, reducing waiting time and eliminating the need for manual feeding, which not only ensures that the operator does not need to frequently approach the welding area The feeding operation reduces the risk of being injured by dangerous factors such as welding sparks and high temperature, and can also enable the welding process to continue, greatly improving production efficiency. As the feeding operation proceeds, when the front-end automobile parts are transported to the end of the pushing gear rack 57, the automobile parts can be sent to the surface of the unloading rack 512 through the next feeding stroke, and slide down through the inclined surface of the surface of the unloading rack 512. When the automobile parts slide down to the slot position at the end of the unloading rack 512, they will squeeze and automatically open the touch switch 513. By opening the touch switch 513, the lifting push rod 31 and the pushing cylinder 517 can be started. By starting the pushing cylinder 517, the pushing plate 518 can be pushed toward the end of the automobile parts, and the automobile parts can be pushed to slide along the surface of the unloading rack 512, thereby ensuring that each part can be accurately sent to the welding position, ensuring the consistency and accuracy of welding, and improving the welding quality.

[0045] It is worth noting that by rotating the handwheel 511, the handwheel 511 drives the bidirectional screw rod 510 to rotate inside the conveying frame 51, thereby driving the two sets of threaded plates 59 to move along the spiral trajectory, thereby driving the two sets of fixed gear racks 58 to move relative to each other inside the conveying frame 51, and the movement of the fixed gear racks 58 can drive the connecting frame 514 to slide on the surface of the positioning guide rail 515, so as to adjust the distance between the two sets of fixed gear racks 58 to adapt to automobile parts of different specifications.

[0046] Furthermore, in the process of pushing the automobile parts to move by the pushing plate 518, the fixing frame 32 can be pushed to move toward the surface of the base 1 by starting the lifting push rod 31, thereby driving the surrounding sleeve 34 and the clamping plate 410 to move downward synchronously, until the center of the surrounding sleeve 34 and the clamping plate 410 are moved to the end of the automobile parts, so that the three are in the same horizontal position. When the parts are pushed over, the clamping motor 41 is first started, and the clamping motor 41 drives the worm gear 42 to drive the transmission shaft 43 to rotate inside the fixing frame 32, and then with the cooperation of the bevel gear transmission group 2 44, it can drive the two groups of threaded rods 45 to rotate inside the clamping seat 46, and then drive the two groups of threaded blocks 47 to move inside the two groups of clamping seats 46 respectively, thereby driving the connecting rod 1 48 to flip and rotate on the connecting rod. With the cooperation of the two 49, the two groups of clamping plates 410 and rollers 411 are driven to approach the surface of the parts until the two parts are clamped and positioned at the same time, thereby ensuring that the two parts are in the correct position during welding, avoiding misalignment, offset, etc., thereby improving welding accuracy, ensuring the relative angle of the two parts is fixed, making the angle of the weld meet the design requirements, ensuring the consistency of welding quality, and the parts after clamping and positioning are more stable during the welding process, reducing the possibility of safety accidents caused by the movement of parts. Through the setting of the roller 411, it can be ensured that while the parts are effectively clamped, the parts can also be moved under the push of the pushing plate 518, and because the two groups of pushing cylinders 517 are of the same specification and are started at the same time, the butt joint of the two groups of automobile parts after pushing is just opposite to the end of the welding gun 311.

[0047] After the clamping and positioning of the two groups of automobile parts are completed, the surrounding motor 39 and the welding gun 311 are turned on. The starting of the surrounding motor 39 can drive the bevel gear transmission group 1 310 to rotate, and then drive the rotating shaft 37 fixed at its end to rotate inside the support bracket 33, and then, with the cooperation of the transmission chain 38, the other two groups of rotating shafts 37 can be driven to rotate synchronously, and then the multiple groups of surrounding gears 36 can be driven to rotate synchronously, which can drive the surrounding toothed disc 35 and the limit strip 312 to slide inside the surrounding sleeve 34. With the movement of the surrounding toothed disc 35, the turned-on welding gun 311 can be driven Circumferential welding is performed around the joints of two groups of automotive parts to improve the uniformity of welding and ensure that the welds are evenly distributed at the joints of the two groups of automotive parts. A continuous weld can be formed at the joints, greatly enhancing the firmness of the connection and ensuring the consistency of welding strength. This avoids local weak or over-strong welding and improves the overall welding quality. It can disperse stress more evenly and reduce the risk of parts cracking due to stress concentration. It has a high degree of automation and is suitable for operation by automated welding equipment. It can achieve a continuous and efficient welding process, reduce manual intervention, shorten the production cycle, and improve production efficiency.

[0048] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automated welding device for automobile parts, comprising a base (1) and a support frame (2) fixed to the surface of the base (1); Features: A surrounding assembly (3) is provided between the base (1) and the support frame (2), the surrounding assembly (3) comprising two groups of lifting push rods (31) fixed to the surface of the support frame (2), a fixing frame (32) fixed between the output ends of the two groups of lifting push rods (31), and a supporting frame (33) for automatically welding around the surface of automobile parts, a surrounding sleeve (34), a surrounding toothed disc (35) and a welding gun (311); A clamping assembly (4) is provided on one side of the support frame (2) near the welding gun (311), the clamping assembly (4) comprising a clamping motor (41) screwed to the surface of the fixing frame (32), a transmission shaft (43) rotatably connected to the inside of the fixing frame (32), and a threaded rod (45) for clamping and positioning automobile parts, a clamping seat (46), a threaded block (47) and a clamping plate (410); Feeding assemblies (5) are symmetrically mounted on both sides of the surface of the base (1), and the feeding assembly (5) comprises a conveying frame (51) symmetrically fixed on both sides of the surface of the base (1), a conveying motor (52) screwed to the surface of the conveying frame (51), and a pushing gear frame (57), a fixed gear frame (58), a feeding frame (512) and a touch switch (513) for feeding automobile parts; Two groups of surrounding sleeves (34) in a semi-annular structure are arranged below the fixing frame (32); three groups of supporting frames (33) are fixed on opposite sides of the two groups of surrounding sleeves (34); one group of supporting frames (33) is fixedly connected to the fixing frame (32); a surrounding toothed disc (35) is slidably connected inside the surrounding sleeve (34); and a welding gun (311) is screwed between opposite sides of the two groups of surrounding toothed discs (35); A limit strip (312) is fixed to the inner wall surface of the surrounding toothed disc (35), and a limit groove matching the limit strip (312) is provided inside the surrounding sleeve (34); a rotating shaft (37) is rotatably connected inside the support frame (33); surrounding gears (36) are symmetrically fixed to the two ends of the surface of the rotating shaft (37), and the surrounding gears (36) and the surrounding toothed disc (35) are meshingly connected; one end of the three groups of rotating shafts (37) respectively penetrates the interior of the corresponding support frame (33), and respectively extends to the outside of the support frame (33), and is connected via a transmission chain (38) arranged on the outside of the support frame (33); A surrounding motor (39) is connected to the surface of one group of the support bracket (33) by screws, a bevel gear transmission group (310) is fixed to the output end of the surrounding motor (39), and the other end of the bevel gear transmission group (310) is fixedly connected to the end of the rotating shaft (37) rotatably connected inside the support bracket (33); A worm gear (42) is fixed to the output end of the clamping motor (41), the other end of the worm gear (42) is fixedly connected to a transmission shaft (43), both ends of the transmission shaft (43) pass through the interior of the fixing frame (32), extend to both sides of the fixing frame (32), and are fixedly connected to bevel gear transmission group 2 (44) arranged on both sides of the fixing frame (32), respectively, and the other end of the bevel gear transmission group 2 (44) is fixedly connected to a threaded rod (45); A pushing tooth frame (57) is arranged inside the conveying frame (51), and fixed tooth frames (58) are symmetrically arranged on both sides of the pushing tooth frame (57), and a material unloading frame (512) is fixed on one side of the two groups of fixed tooth frames (58) close to the support frame (2), and a slot is provided at the end of the material unloading frame (512), and a touch switch (513) is fixed on one side of the material unloading frame (512) close to the slot; Conveying shafts (53) are rotatably connected to both sides of the conveying frame (51), and a synchronous chain (54) is connected between the two groups of conveying shafts (53), and the output end of the conveying motor (52) is fixedly connected to one group of conveying shafts (53), and a connecting plate (56) is provided between the two groups of conveying shafts (53), and the four corners of the connecting plate (56) are rotatably connected to push-pushing swing plates (55), and the other end of the push-pushing swing plate (55) is fixedly connected to the conveying shaft (53); A threaded plate (59) is symmetrically fixed on opposite sides of the two groups of fixed gear racks (58); a bidirectional screw rod (510) is rotatably connected between the two conveying racks (51), and the two groups of threaded plates (59) are both threadedly connected to the bidirectional screw rod (510); a hand wheel (511) is fixed to one end of the bidirectional screw rod (510); two groups of connecting racks (514) are symmetrically fixed on opposite sides of the two groups of fixed gear racks (58); a positioning guide rail (515) is fixed on the lower surface of the connecting rack (514); a support plate (516) is fixed on the lower surface of the positioning guide rail (515), and the support plate (516) is fixed to the surface of the conveying rack (51); a push cylinder (517) is fixed on the side of the surface of the base (1) close to the unloading rack (512); and a push plate (518) is fixed to the output end of the push cylinder (517).

2. The automatic welding device for automobile parts according to claim 1, characterized in that: Threaded rods (45) are symmetrically arranged at both ends of the transmission shaft (43); a clamping seat (46) is fixed to the surface of the support bracket (33) close to the threaded rod (45); the threaded rod (45) is rotatably connected to the inside of the clamping seat (46); a threaded block (47) is arranged inside the clamping seat (46); and the threaded block (47) is threadedly connected to the surface of the threaded rod (45); and clamping plates (410) are symmetrically arranged on both sides below the clamping seat (46).

3. The automatic welding device for automobile parts according to claim 2 is characterized in that: Connecting rods (48) are symmetrically hinged at both ends of the threaded block (47), the middle portion of the connecting rod (48) is hinged to the clamping seat (46), the other end of the connecting rod (48) is hinged to the clamping plate (410), and connecting rods (49) are hinged between the clamping plate (410) and the clamping seat (46), and a plurality of groups of rollers (411) arranged at equal distances are fixed to the inner wall surfaces of the two groups of clamping plates (410) on opposite sides.

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