A multi-angle welding device for the chassis in automobile production

Abstract

The present invention relates to the technical field of automobile manufacturing, and discloses a multi-angle welding device for an automobile chassis, which includes a welding base, a driving gear shaft and a cleaning component arranged inside the welding base. The driving gear shaft is rotationally connected inside the welding base in a driven manner. The cleaning component includes a first toothed rod, a first sliding table, a folding angle chute and convex teeth. The first toothed rod is slidably connected inside the welding base and meshes with the driving gear shaft; during the rotation of the rotary brush, it will roll and clean the upper surface of the welding base, so that the slag on the upper surface of the welding base is pushed into the inside of the guiding groove under the push of the rolling of the rotary brush, thereby cleaning the slag on the welding base, making the welding base in a clean state when the vehicle frame is placed on the welding base. The convex points on the folding angle plate will clean the surface of the rotary brush, thereby realizing the cleaning of the slag on the upper surface of the welding base and the self-cleaning of the rotary brush, avoiding the problem that workers need to repeatedly clean during welding.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and particularly relates to a multi-angle welding device for an automobile chassis in automobile production. Background Technique

[0002] The automobile chassis is an important part of an automobile. It supports and installs the automobile engine and its various components and assemblies, forms the overall shape of the automobile, and receives the power of the engine to make the automobile move and ensure normal driving. When manufacturing the automobile chassis, it is necessary to weld the required components on the chassis to the chassis through welding equipment. In the evolution process of chassis manufacturing, the arc surface is increased to enhance its impact resistance ability to ensure the safety of the driver when sitting.

[0003] During the welding process of the existing automobile chassis, the welding robotic arm is adjusted in angle to achieve welding work at different positions. During the welding process, it is difficult for the staff to observe the welding process because the welding position of the vehicle frame needs to be centered. At the same time, the welding of the inclined surface of the vehicle frame requires the robotic arm to continuously adjust the angle, which is not conducive to the efficient progress of the welding work;

[0004] During the welding process of the chassis, the high temperature will melt the workpiece and generate metal slag. The residue of the slag on the carrier plate will cause the chassis placed thereon later to be knocked and scratched, and there is a problem that the anti-corrosion paint on the surface of the vehicle frame is scraped off and the anti-corrosion performance is reduced;

[0005] During the welding of the vehicle frame, flying debris and smoke will be generated between the welding torch and the vehicle frame. The smoke will affect the staff's observation of the welding position. If the staff does not adjust the welding position in time, it will affect the aesthetics of the weld pattern, and at the same time, it will affect the local compressive capacity of the vehicle frame. The flying debris will scatter around the welding device and cause pollution to the surrounding environment.

[0006] Therefore, a multi-angle welding device for an automobile chassis in automobile production is proposed. Summary of the Invention

[0007] The purpose of the present invention is to provide a multi-angle welding device for an automobile chassis in automobile production to solve the problems raised in the above background technique.

[0008] To achieve the above object, the present invention provides the following technical solutions: A multi-angle welding device for an automobile chassis includes a welding base, a driving gear shaft, and a cleaning component disposed inside the welding base. The driving gear shaft is rotatably connected to the inside of the welding base in a driven manner. The cleaning component includes a first toothed rod, a first sliding table, a folding angle chute, and a convex tooth. The first toothed rod is slidably connected to the inside of the welding base and meshes with the driving gear shaft. The first sliding table is fixedly connected to the top of the end of the first toothed rod away from the driving gear shaft. The folding angle chute is formed through the inside of the first sliding table. The convex tooth is fixedly connected to the inner wall of the first sliding table. A rotating shaft is slidably connected to the inside of the folding angle chute. Both ends of the rotating shaft are symmetrically and fixedly connected with brush rollers. The ends of the brush rollers away from the rotating shaft are all slidably connected to the upper surface of the welding base. A first tooth groove is formed on one side of the outer wall of each brush roller close to the rotating shaft. The first tooth groove meshes with the convex tooth. Rack bars are symmetrically and fixedly connected to the inside of the welding base. A first gear is rotatably connected to the inside of the first sliding table. The rack bar meshes with the first gear. A transmission belt is connected between the first gear and the rotating shaft. Collars are symmetrically and rotatably connected to the outer wall of the rotating shaft. A third spring is fixedly connected between the collar and the side of the inner wall of the first sliding table away from the driving gear shaft. Guide grooves are symmetrically formed in the inside of the welding base. Folding angle plates are symmetrically fixedly connected to the upper surface of the welding base.

[0009] Preferably, the cleaning component further includes a support plate, a first spring, and a clamp. The support plates are symmetrically slidably connected to the side of the first sliding table close to the driving gear shaft. The first spring is fixedly connected between the support plate and the inside of the first sliding table. Clamps are rotatably connected to the side of each support plate close to the driving gear shaft. A second spring is fixedly connected between each clamp and the support plate.

[0010] Preferably, an inclination angle adjustment component is further disposed inside the welding base. The inclination angle adjustment component includes a toothed disc, a lead screw, and a convex threaded rod. A second toothed rod is slidably connected to the inside of the welding base. The second toothed rod meshes with the driving gear shaft. A second sliding table is fixedly connected to the side of the top of the second toothed rod away from the driving gear shaft. The toothed disc is rotatably connected to the inside of the second sliding table. The lead screw is fixedly connected to the top of the toothed disc. A carrier plate is slidably connected to the inside of the second sliding table. The carrier plate is slidably connected to the outer wall of the lead screw. The convex threaded rod is rotatably connected to the inside of the second sliding table. The convex threaded rod meshes with the toothed disc. A turning handle is fixedly connected to the end of the convex threaded rod located outside the welding base.

[0011] Preferably, hydraulic lifting platforms are symmetrically and fixedly connected to the top of the welding base. A welding platform is arranged between the hydraulic lifting platforms. An angle adjustment component is arranged inside the welding platform. The angle adjustment component includes a slip ring, a driving wheel, and a second tooth groove. The slip ring is slidably connected to the inside of the hydraulic lifting platform. The driving wheel is rotatably connected to the inside of the slip ring in a driven manner. The second tooth groove is annularly distributed and opened on the outer wall of the welding platform. The driving wheel and the second tooth groove are meshed with each other.

[0012] Preferably, a splash-proof component is arranged at the bottom of the welding platform. The splash-proof component includes a fan and a filter plate. Round rods are symmetrically and fixedly connected to the bottom of the welding platform in an annular array. The outer walls of the round rods are rotatably connected to the welding machine bases. A welding torch is fixedly connected to the bottom of the welding machine base. A second protective cylinder is fixedly connected to the bottom of the welding machine base. A first protective cylinder is fixedly connected to the outer wall of the welding torch. The fan is rotatably connected to the outer wall of the welding torch in a driven manner. The filter plate is fixedly connected to the top of the first protective cylinder.

[0013] Preferably, when the first sliding table is at one end of the upper surface of the welding base away from the driving tooth shaft, the rolling brush is not in contact with the upper surface of the welding base and the convex teeth are in meshing with the first tooth groove. The third spring is in a stretched state. Convex points are uniformly arranged on one side of the folding plate close to the rolling brush. The folding plate is in a folding shape and the height at the folding corner of the folding plate is the same as the height of the axis of the rolling brush.

[0014] Preferably, a chamfer is arranged on one side of the carrier plate close to the driving tooth shaft. One end of the convex threaded rod close to the driving tooth shaft is rotatably connected to the inside of the welding base.

[0015] Preferably, an annular air outlet is formed between the inner wall of the second protective cylinder and the outer wall of the first protective cylinder. The bottom of the annular air outlet is in an outward-expanded shape. An annular air inlet is formed between the inner wall of the first protective cylinder and the outer wall of the welding torch. The annular air inlet is parallel to the axis of the welding torch.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The fixture rotates around the support plate due to the curvature of the frame surface. At the same time, the support plate drives the fixture to move relatively on the first sliding table, thereby adjusting the distance between the two fixtures, enabling the fixture to completely fit the frame border, so as to ensure that when the curvatures of the frame borders are different, the fixture can achieve stable clamping of the frame, avoiding the problem of messy welding lines caused by the shaking of the frame during welding;

[0018] 2. During the rotation of the rotary brush, it will roll and clean the upper surface of the welding base, so that the debris on the upper surface of the welding base is pushed into the inside of the guiding groove under the impetus of the rolling of the rotary brush, thereby cleaning the debris on the welding base, making the welding base clean when the vehicle frame is placed on it. The convex points on the folding angle plate will clean the surface of the rotary brush, thus realizing the cleaning of the debris on the upper surface of the welding base and the self-cleaning of the rotary brush, avoiding the problem that workers need to repeatedly clean during welding;

[0019] 3. Through the setting of the inclination angle adjustment component, the vehicle frame to be welded can be tilted as a whole, ensuring that the vehicle frame can maintain a stable state during welding at a specific angle, reducing the working difficulty of workers during welding, and improving the welding efficiency;

[0020] 4. When the fan rotates, the fumes generated during the welding of the vehicle frame by the welding torch are extracted through the annular air inlet into the inside of the first protective cylinder, thereby reducing the influence of the smoke on visual observation during welding. At the same time, the fumes extracted by the fan will pass through the filter plate inside the first protective cylinder and be discharged outward at high speed through the annular air outlet between the second protective cylinder and the first protective cylinder. The gas discharged at high speed will form an umbrella-shaped air hood outside the welding torch, preventing the debris generated during the welding of the vehicle frame by the welding torch from splashing outward, making the waste slag be blocked under the welding torch by the umbrella-shaped air hood, and reducing the pollution of the surrounding environment during welding. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a schematic diagram of the overall structure of the welding base of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the welding base of the present invention;

[0024] Figure 4 It is a schematic diagram of the internal structure of the first sliding table of the present invention;

[0025] Figure 5 It is a sectional view schematic diagram of the cleaning component structure of the present invention;

[0026] Figure 6 It is a sectional view schematic diagram of the collar structure of the present invention;

[0027] Figure 7 It is a partial schematic diagram of the convex tooth structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the overall structure of the rotary brush of the present invention;

[0029] Figure 9 It is a sectional view schematic diagram of the inclination angle adjustment component structure of the present invention;

[0030] Figure 10 is a schematic cross-sectional view of the angle adjustment component structure of the present invention;

[0031] Figure 11 is a schematic cross-sectional view of the anti-splash component structure of the present invention.

[0032] In the figure:

[0033] 1. Welding base; 2. Driving gear shaft; 3. Hydraulic lifting table; 4. Welding platform;

[0034] 11. Cleaning component; 111. First toothed rod; 112. First sliding table; 113. Support plate; 114. First spring; 115. Fixture; 116. Second spring; 117. Rack; 118. First gear; 119. Rotating shaft; 1110. Rotating brush; 1111. First tooth groove; 1112. Angular chute; 1113. Convex tooth; 1114. Collar; 1115. Third spring; 1116. Transmission belt; 1117. Guide groove; 1118. Angular plate;

[0035] 12. Inclination adjustment component; 121. Second toothed rod; 122. Second sliding table; 123. Tooth disc; 124. Lead screw; 125. Carrier plate; 126. Convex threaded rod; 127. Turning handle;

[0036] 41. Angle adjustment component; 411. Slip ring; 412. Driving wheel; 413. Second tooth groove;

[0037] 42. Anti-splash component; 421. Welding machine base; 422. Welding torch; 423. Fan; 424. First protective cylinder; 425. Round rod; 426. Filter plate; 427. Second protective cylinder; 428. Annular air inlet; 429. Annular air outlet; Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiments of the present invention

[0040] Please refer to Figures 1 to 8, A multi-angle welding device for the chassis in automobile production, including a welding base 1, a driving gear shaft 2 and a cleaning component 11 arranged inside the welding base 1. The driving gear shaft 2 is rotatably connected to the inside of the welding base 1 in a driven manner. The cleaning component 11 includes a first toothed rod 111, a first sliding table 112, a folding angle chute 1112 and a convex tooth 1113. The first toothed rod 111 is slidably connected to the inside of the welding base 1 and meshes with the driving gear shaft 2. The first sliding table 112 is fixedly connected to the top of the end of the first toothed rod 111 away from the driving gear shaft 2. The folding angle chute 1112 is penetrated and opened inside the first sliding table 112. The convex tooth 1113 is fixedly connected to the inner wall of the first sliding table 112. A rotating shaft 119 is slidably connected inside the folding angle chute 1112. Both ends of the rotating shaft 119 are symmetrically and fixedly connected with brush rollers 1110. The ends of the brush rollers 1110 away from the rotating shaft 119 are all slidably connected to the upper surface of the welding base 1. On one side of the outer wall of the brush roller 1110 close to the rotating shaft 119, first tooth grooves 1111 are opened. The first tooth grooves 1111 mesh with the convex teeth 1113. Inside the welding base 1, racks 117 are symmetrically and fixedly connected. Inside the first sliding table 112, a first gear 118 is rotatably connected. The racks 117 mesh with the first gear 118. A transmission belt 1116 is connected in transmission between the first gear 118 and the rotating shaft 119. On the outer wall of the rotating shaft 119, collar rings 1114 are symmetrically and rotatably connected. Between the collar rings 1114 and the inner wall of the first sliding table 112 away from the driving gear shaft 2, third springs 1115 are fixedly connected. Inside the welding base 1, guide grooves 1117 are symmetrically opened. On the upper surface of the welding base 1, folding angle plates 1118 are symmetrically and fixedly connected.

[0041] The cleaning component 11 further includes support plates 113, first springs 114 and clamps 115. The support plates 113 are symmetrically slidably connected to the side of the first sliding table 112 close to the driving gear shaft 2. The first springs 114 are fixedly connected between the support plates 113 and the inside of the first sliding table 112. On the side of the support plates 113 close to the driving gear shaft 2, clamps 115 are rotatably connected. Between the clamps 115 and the support plates 113, second springs 116 are fixedly connected. When the first sliding table 112 is at the end on the upper surface of the welding base 1 away from the driving gear shaft 2, the brush rollers 1110 do not fit with the upper surface of the welding base 1 and the convex teeth 1113 are in a meshed state with the first tooth grooves 1111, and the third springs 1115 are in a stretched state. On the side of the folding angle plate 1118 close to the brush roller 1110, convex points are evenly arranged. The folding angle plate 1118 is in a folding angle shape and the height at the folding angle of the folding angle plate 1118 is the same as the height of the axis of the brush roller 1110.

[0042] In the actual application of the embodiment of the present invention:

[0043] During operation, the staff place the vehicle chassis on the welding base 1, and then start the driving gear shaft 2 to rotate. After the driving gear shaft 2 rotates, it drives the first rack bars 111 meshing with it on both sides to slide inside the welding base 1. When the first rack bars 111 slide, they drive the first sliding platforms 112 on both sides to move together and approach each other. When the clamps 115 on both sides are in contact with the vehicle frame, if the first rack bars 111 continue to move, the sides of the clamps 115 close to the vehicle frame will form a clamp on the vehicle frame. The clamps 115 will rotate around the support plate 113 due to the curvature of the vehicle frame surface. At the same time, the support plate 113 will drive the clamps 115 to move relatively on the first sliding platforms 112, thereby adjusting the distance between the two clamps 115, enabling the clamps 115 to fully fit the border of the vehicle frame, ensuring that when the curvature of the vehicle frame border is different, the clamps 115 can all stably clamp the vehicle frame, and avoiding the problem of messy welding lines caused by the shaking of the vehicle frame during welding;

[0044] When the first sliding platform 112 slides towards the side close to the driving gear shaft 2, the first gear 118 will mesh with the rack 117 and rotate. The first gear 118 rotates and drives the rotating shaft 119 to rotate together through the transmission belt 1116. The rotating shaft 119 rotates to drive the roller brushes 1110 at both ends to rotate. During the rotation of the roller brushes 1110, they will roll and clean the upper surface of the welding base 1, so that the debris on the upper surface of the welding base 1 is pushed into the inside of the guiding groove 1117 under the pushing of the rolling of the roller brushes 1110, thereby cleaning the debris on the welding base 1, making the welding base 1 in a clean state when the vehicle frame is placed on it. After the vehicle frame is welded and taken out, the staff control the driving gear shaft 2 to rotate forward and backward to make the first sliding platform 112 reciprocate on the welding base 1 once. When the first sliding platform 112 slides towards the side away from the driving gear shaft 2, the roller brushes 1110 will be blocked by the folding plate 1118 and cannot move synchronously with the first sliding platform 112. At this time, when the first sliding platform 112 continues to slide, the first tooth groove 1111 will move towards the direction close to the convex tooth 1113 inside the folding chute 1112 and mesh with the convex tooth 1113, so that the roller brushes 1110 are lifted and rotated under the combined action of the folding chute 1112 and the convex tooth 1113. After the roller brushes 1110 are lifted, they are no longer in contact with the upper surface of the welding base 1. The roller brushes 1110 rotate while fitting the folding plate 1118 under the action of the meshing of the first tooth groove 1111 and the convex tooth 1113. At this time, because the convex points on the folding plate 1118 will clean the surface of the roller brushes 1110, the debris attached to the surface of the roller brushes 1110 will fall down into the guiding groove 1117 during the idle rotation of the roller brushes 1110, thereby realizing the cleaning of the debris on the upper surface of the welding base 1 and the self-cleaning of the roller brushes 1110, and avoiding the problem that the staff need to clean repeatedly during welding.

[0045] Please refer to Figures 1 to 9, an inclination angle adjusting assembly 12 is further arranged inside the welding base 1. The inclination angle adjusting assembly 12 includes a gear disk 123, a lead screw 124 and a convex threaded rod 126. A second toothed rod 121 is slidably connected inside the welding base 1. The second toothed rod 121 meshes with the driving gear shaft 2. On one side of the top of the second toothed rod 121 away from the driving gear shaft 2, a second sliding table 122 is fixedly connected. The gear disk 123 is rotatably connected inside the second sliding table 122. The lead screw 124 is fixedly connected to the top of the gear disk 123. A carrier plate 125 is slidably connected inside the second sliding table 122. The carrier plate 125 is slidably connected to the outer wall of the lead screw 124. The convex threaded rod 126 is rotatably connected inside the second sliding table 122. The convex threaded rod 126 meshes with the gear disk 123. One end of the convex threaded rod 126 located outside the welding base 1 is fixedly connected with a turning handle 127. A chamfer is arranged on one side of the carrier plate 125 close to the driving gear shaft 2. One end of the convex threaded rod 126 close to the driving gear shaft 2 is rotatably connected inside the welding base 1.

[0046] In the actual application of the embodiment of the present invention:

[0047] When the angle of the welding torch 422 required for the frame welding cannot be adjusted, the staff rotates the turning handle 127. The rotation of the turning handle 127 drives the convex threaded rod 126 to rotate together. The rotation of the convex threaded rod 126 will cause the gear disk 123 to mesh with it and rotate. When the gear disk 123 rotates, it will drive the lead screw 124 to rotate together. The rotation of the lead screw 124 drives the carrier plate 125 sliding on its surface to lift upward, so that the whole frame to be welded is tilted, ensuring that the frame can maintain a stable state during welding at a specific angle, reducing the working difficulty of the staff during welding and improving the welding efficiency.

[0048] Please refer to Figure 10 and Figure 11 , hydraulic lifting platforms 3 are symmetrically and fixedly connected to the top of the welding base 1. A welding platform 4 is arranged between the hydraulic lifting platforms 3. An angle adjusting assembly 41 is arranged inside the welding platform 4. The angle adjusting assembly 41 includes a slip ring 411, a driving wheel 412 and a second tooth groove 413. The slip ring 411 is slidably connected inside the hydraulic lifting platform 3. The driving wheel 412 is rotatably connected inside the slip ring 411 in a driven manner. The second tooth groove 413 is annularly distributed on the outer wall of the welding platform 4. The driving wheel 412 meshes with the second tooth groove 413;

[0049] The bottom of the welding platform 4 is provided with a splash-proof component 42. The splash-proof component 42 includes a fan 423 and a filter plate 426. Circular rods 425 are fixedly connected to the bottom of the welding platform 4 in an annular array. The outer walls of the circular rods 425 are rotatably connected to the welding machine bases 421. The bottom of the welding machine bases 421 is fixedly connected to welding torches 422. A second protective cylinder 427 is fixedly connected to the bottom of the welding machine bases 421. A first protective cylinder 424 is fixedly connected to the outer wall of the welding torch 422. The fan 423 is rotatably connected to the outer wall of the welding torch 422 by being driven. The filter plate 426 is fixedly connected to the top of the first protective cylinder 424. An annular air outlet 429 is formed between the inner wall of the second protective cylinder 427 and the outer wall of the first protective cylinder 424. The bottom of the annular air outlet 429 is in an outward-expanded shape. An annular air inlet 428 is formed between the inner wall of the first protective cylinder 424 and the outer wall of the welding torch 422. The annular air inlet 428 is in a state parallel to the axis line of the welding torch 422.

[0050] In the actual application of the embodiment of the present invention:

[0051] After the vehicle frame is fixed, the staff manipulates the slip ring 411 to slide inside the hydraulic lifting platform 3, and controls the driving wheel 412 to rotate and drive the welding platform 4 to rotate together by meshing with the second tooth groove 413, so that the welding torch 422 below the welding platform 4 can adjust to a suitable angle to weld the vehicle frame. Subsequently, the electric drive rotates the welding machine base 421 to align the welding torch 422 to carry out the welding work on the vehicle frame. When the welding torch 422 is welding, the fan 423 starts to rotate synchronously. When the fan 423 rotates, the smoke generated by the welding torch 422 during the welding of the vehicle frame is extracted through the annular air inlet 428 into the interior of the first protective cylinder 424, thereby reducing the influence of the smoke on visual observation during welding. At the same time, the smoke extracted by the fan 423 will be filtered by the filter plate 426 inside the first protective cylinder 424, and then discharged outward at high speed through the annular air outlet 429 between the second protective cylinder 427 and the first protective cylinder 424. At this time, because the bottom end of the annular air outlet 429 is inclined outward in a ring shape, the gas discharged at high speed will form an umbrella-shaped air hood outside the welding torch 422, thereby preventing the slag generated during the welding of the welding torch 422 to the vehicle frame from splashing outward, and making the waste slag be blocked below the welding torch 422 by the blocking of the umbrella-shaped air hood, reducing the pollution to the surrounding environment during welding.

[0052] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0053] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-angle welding device for chassis used in automobile production, comprising a welding base (1), a driving gear shaft (2) and a cleaning assembly (11) arranged inside the welding base (1), characterized in that: The driving gear shaft (2) is driven to rotate and is connected to the inside of the welding base (1); the cleaning assembly (11) comprises a first gear rod (111), a first sliding platform (112), an angled slide groove (1112) and a convex tooth (1113); the first gear rod (111) is slidably connected to the inside of the welding base (1) and meshes with the driving gear shaft (2); the first sliding platform (112) is fixedly connected to the end of the first gear rod (111) away from the driving gear shaft (2) The top of the welding base (1) is provided with a folded angle slide groove (1112) extending through the interior of the first sliding platform (112), the convex teeth (1113) are fixedly connected to the inner wall of the first sliding platform (112), the interior of the folded angle slide groove (1112) is slidably connected to a rotating shaft (119), the two ends of the rotating shaft (119) are symmetrically fixedly connected to roller brushes (1110), and the ends of the roller brushes (1110) away from the rotating shaft (119) are slidably connected to the upper surface of the welding base (1) The outer wall of the roller brush (1110) is provided with a first tooth groove (1111) on one side close to the rotating shaft (119), the first tooth groove (1111) and the convex tooth (1113) are meshed with each other, a rack (117) is symmetrically fixedly connected inside the welding base (1), a first gear (118) is rotatably connected inside the first sliding platform (112), the rack (117) and the first gear (118) are meshed with each other, the first gear (118) and the rotating shaft (119) are meshed with each other, and the first gear (118) and the rotating shaft (119) are meshed with each other. A transmission belt (1116) is connected between the shafts (119) for transmission, a collar (1114) is symmetrically rotatably connected to the outer wall of the rotating shaft (119), a third spring (1115) is fixedly connected to the collar (1114) and the inner wall of the first sliding platform (112) away from the driving gear shaft (2), a guide groove (1117) is symmetrically opened inside the welding base (1), and a folded angle plate (1118) is symmetrically fixedly connected to the upper surface of the welding base (1).

2. The multi-angle welding device for chassis used in automobile production according to claim 1, characterized in that: The cleaning assembly (11) further comprises a support plate (113), a first spring (114) and a clamp (115); the support plate (113) is symmetrically slidably connected to a side of the first sliding platform (112) close to the driving gear shaft (2); the first spring (114) is fixedly connected between the support plate (113) and the inside of the first sliding platform (112); the side of the support plate (113) close to the driving gear shaft (2) is rotatably connected to the clamp (115); and a second spring (116) is fixedly connected between the clamp (115) and the support plate (113).

3. The multi-angle welding device for chassis used in automobile production according to claim 1, characterized in that: The welding base (1) is also provided with an inclination adjustment assembly (12) inside, and the inclination adjustment assembly (12) comprises a toothed disc (123), a screw rod (124) and a convex threaded rod (126). A second toothed rod (121) is slidably connected inside the welding base (1), and the second toothed rod (121) is meshed with the driving gear shaft (2). The second toothed rod (121) and the first toothed rod (111) are vertically distributed inside the welding base (1), and the upper surface of the second toothed rod (121) is in contact with the lower surface of the first toothed rod (111). The top of the second toothed rod (121) is fixed on a side away from the driving gear shaft (2). A second sliding platform (122) is connected, the toothed disc (123) is rotatably connected to the inside of the second sliding platform (122), the screw rod (124) is fixedly connected to the top of the toothed disc (123), the inside of the second sliding platform (122) is slidably connected to a carrier plate (125), the carrier plate (125) is slidably connected to the outer wall of the screw rod (124), the convex threaded rod (126) is rotatably connected to the inside of the second sliding platform (122), the convex threaded rod (126) is meshed with the toothed disc (123), and one end of the convex threaded rod (126) located outside the welding base (1) is fixedly connected to a turning handle (127).

4. The multi-angle welding device for chassis used in automobile production according to claim 1, characterized in that: A hydraulic lifting platform (3) is symmetrically fixedly connected to the top of the welding base (1); a welding platform (4) is arranged between the hydraulic lifting platforms (3); an angle adjustment component (41) is arranged inside the welding platform (4); the angle adjustment component (41) comprises a slip ring (411), a driving wheel (412) and a second tooth groove (413); the slip ring (411) is slidably connected to the inside of the hydraulic lifting platform (3); the driving wheel (412) is driven to rotate and is connected to the inside of the slip ring (411); the second tooth groove (413) is annularly distributed and opened on the outer wall of the welding platform (4); the driving wheel (412) and the second tooth groove (413) are meshed.

5. The multi-angle welding device for chassis used in automobile production according to claim 4, characterized in that: The bottom of the welding platform (4) is provided with an anti-splash component (42), the anti-splash component (42) includes a fan (423) and a filter plate (426), the bottom of the welding platform (4) is distributed in a circular array and fixedly connected to round rods (425), the outer walls of the round rods (425) are rotatably connected to a welding machine base (421), the bottom of the welding machine base (421) is fixedly connected to a welding gun (422), the bottom of the welding machine base (421) is fixedly connected to a second protective tube (427), the outer wall of the welding gun (422) is fixedly connected to a first protective tube (424), the fan (423) is driven to be rotatably connected to the outer wall of the welding gun (422), and the filter plate (426) is fixedly connected to the top of the first protective tube (424).

6. The multi-angle welding device for chassis used in automobile production according to claim 1, characterized in that: When the first sliding platform (112) is located at an end of the upper surface of the welding base (1) away from the driving gear shaft (2), the roller brush (1110) is not in contact with the upper surface of the welding base (1), and the convex teeth (1113) and the first tooth grooves (1111) are in a meshing state, the third spring (1115) is in a stretched state, and convex points are evenly arranged on a side of the angled plate (1118) close to the roller brush (1110), the angled plate (1118) is angled, and the height of the angled portion of the angled plate (1118) is consistent with the height of the axis of the roller brush (1110).

7. The multi-angle welding device for chassis used in automobile production according to claim 3, characterized in that: A chamfer is provided on one side of the carrier plate (125) close to the driving gear shaft (2), and one end of the convex threaded rod (126) close to the driving gear shaft (2) is rotatably connected to the inside of the welding base (1).

8. The multi-angle welding device for chassis used in automobile production according to claim 5, characterized in that: An annular air outlet (429) is formed between the inner wall of the second protective tube (427) and the outer wall of the first protective tube (424), and the bottom of the annular air outlet (429) is outwardly expanded. An annular air inlet (428) is formed between the inner wall of the first protective tube (424) and the outer wall of the welding gun (422), and the annular air inlet (428) is parallel to the axis of the welding gun (422).

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