Welding equipment for automobile parts welding

Abstract

The present invention relates to the technical field of welding equipment, and specifically discloses a welding device for welding automobile parts, comprising a workbench, a clamping mechanism and a welding mechanism, wherein the welding mechanism comprises two C-shaped plates and two welding guns, wherein a coaxially arranged C-shaped ring groove and a C-shaped guide groove are provided on the first side of the C-shaped plate, a conveyor belt and a driving component 1 are arranged in the C-shaped ring groove, the C-shaped guide groove is located on the outer side of the C-shaped ring groove, a sliding column is slidably connected in the C-shaped guide groove, the welding gun and the sliding column are rotationally matched, the welding gun and the sliding column are slidably matched and elastically connected, the welding gun is slidably connected with a driving column along its extension direction, the driving column and the welding gun are rotationally matched and fixedly connected to the conveyor belt, the conveyor belt drives the driving column to move along the C-shaped ring groove, and the driving column drives the welding gun and the sliding column to move along the C-shaped guide groove. The welding device for welding automobile parts of the present invention can be applied to the welding of double-row pipes, and the welding gun can realize continuous ring welding, thereby improving welding efficiency and weld quality.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to a welding device for welding automobile parts. Background Art

[0002] The automobile exhaust pipe is an important part of the automobile engine exhaust system, mainly composed of the exhaust manifold, exhaust straight pipe and muffler. When welding the muffler and the exhaust straight pipe, circumferential welding is required. However, since the muffler and the exhaust straight pipe need to be clamped and positioned by a clamping tool during welding, continuous welding is usually impossible during circumferential welding due to the interference between the clamping tool and the welding robot, which affects the processing efficiency and welding quality.

[0003] A Chinese patent with announcement number CN116765732B discloses a tooling fixture for welding automotive parts with a self-correcting function, including a rotary drive module and a clamping mechanism laterally arranged in the rotary drive module, and both ends of the clamping mechanism are coaxially connected to the rotary drive module through an axial connecting frame; a welding robot is vertically arranged on one side of the rotary drive module to weld the exhaust pipe assembly clamped on the clamping mechanism; the clamping mechanism also includes a left clamping module, a middle clamping module and a right clamping module arranged in sequence from left to right; adjacent clamping modules are coaxially movably connected through a rotating connecting frame, and an alternating connecting module is also arranged directly below the middle clamping module to fix the left clamping module, the middle clamping module and the right clamping module in series.

[0004] The above patent independently clamps the exhaust pipe components through the left clamping module, the middle clamping module and the right clamping module, and at the same time cooperates with the alternating connecting module to uniformly lock the adjusted welding posture, thereby ensuring the consistency of axial rotation during welding. Due to the connection design of the axial connecting frame, the connection point of the exhaust tail pipe and the muffler can be always exposed, and there is no need for the welding robot to move along the welding point, thereby maintaining the consistency of welding and solving the technical problem that traditional welding equipment cannot achieve one-time welding.

[0005] However, in the actual welding process of the above patent, it is necessary to drive the entire clamping mechanism to flip to adapt to the position of the welding robot, which requires providing the clamping mechanism with sufficient flipping space and flipping power, resulting in high energy consumption and high requirements on the flipping accuracy of the clamping mechanism. In addition, when welding the double exhaust pipes, since the distance between the double exhaust pipes is small, the two exhaust pipes will interfere with the welding head during welding, and the clamping mechanism still needs to be continuously flipped, and the welding robot continuously adjusts the position of the welding head, and continuous ring welding cannot be achieved, resulting in low processing efficiency.

[0006] Therefore, the art needs a welding device for welding automobile parts to solve the above problems. Summary of the invention

[0007] The present invention provides a welding device for welding automobile parts, aiming to solve the problems that the welding device in the related art needs to clamp the tooling to drive the automobile parts to turn over continuously during welding and cannot adapt to the welding of double exhaust pipes.

[0008] The welding device for welding automobile parts of the present invention comprises a workbench, a clamping mechanism and a welding mechanism arranged on the workbench, the welding mechanism comprises two symmetrically arranged C-shaped plates and two welding guns, a first side of the C-shaped plate is provided with a coaxially arranged C-shaped annular groove and a C-shaped guide groove, a conveyor belt and a driving component for driving the conveyor belt to rotate are arranged in the C-shaped annular groove, the C-shaped guide groove is located outside the C-shaped annular groove, the central angle of the C-shaped guide groove is smaller than the central angle of the C-shaped annular groove, and the diagonal of the central angle of the C-shaped guide groove coincides with the diagonal of the central angle of the C-shaped annular groove;

[0009] A sliding column is slidably connected in the C-shaped guide groove, the welding gun is perpendicular to the sliding column and rotates with the sliding column, the welding gun slides with the sliding column and is elastically connected along its extension direction, the welding gun is slidably connected with a driving column along its extension direction, the driving column rotates with the welding gun and is fixedly connected to the conveyor belt, the conveyor belt drives the driving column to move along the C-shaped ring groove, the driving column drives the welding gun and the sliding column to move along the C-shaped guide groove, when the sliding column is located at the first end of the C-shaped guide groove and the driving column is located at the first end of the C-shaped ring groove, when the sliding column is located at the second end of the C-shaped guide groove and the driving column is located at the second end of the C-shaped ring groove, the contact point of the welding head of the welding gun and the exhaust pipe of the automobile is the same.

[0010] The present invention provides two symmetrical C-shaped plates so that the two C-shaped plates are arranged around two side-by-side automobile exhaust pipes, and drives the welding gun to move along the C-shaped plates, thereby realizing synchronous welding of the side-by-side automobile exhaust pipes and improving welding efficiency; and the clamping mechanism used for clamping the automobile exhaust pipe and the muffler in the present invention does not need to cooperate with the rotation of the welding gun during the welding process, thereby ensuring the stability of automobile parts and the accuracy of welding position docking during the welding process; the present invention realizes driving the welding gun to move along the periphery of the automobile exhaust pipe through the cooperation of the C-shaped guide groove, the C-shaped ring groove, the sliding column and the driving column, so that the welding head of the welding gun can move to the starting welding position, thereby realizing continuous ring welding and improving welding efficiency and weld quality.

[0011] Preferably, a support rod is fixedly connected to the welding gun, and a support wheel is rotatably connected to the support rod. The central axis of the support wheel is parallel to the central axis of the C-shaped plate. When the welding gun moves along the C-shaped guide groove, the support wheel abuts against the outer periphery of the automobile exhaust pipe, so that there is space between the welding head of the welding gun and the automobile exhaust pipe for outputting welding wire and inert gas.

[0012] When the welding gun moves along the C-shaped guide groove, the support wheel abuts against the outer periphery of the automobile exhaust pipe, so that there is space between the welding head of the welding gun and the automobile exhaust pipe for outputting welding wire and inert gas, thereby preventing the welding head of the welding gun from being completely covered by the automobile exhaust pipe and affecting welding.

[0013] Preferably, a driving component includes a transmission wheel arranged at both ends of the C-shaped ring groove and a motor fixedly connected to the C-shaped plate, the transmission wheel is rotatably connected to the C-shaped plate, and the conveyor belt is surrounded by two transmission wheels, one of which is fixedly connected to the output end of the motor, the motor drives the transmission wheel to rotate, and the transmission wheel drives the conveyor belt to rotate.

[0014] Preferably, a driving component 2 is provided on the workbench to drive the two C-shaped plates to move, and a positioning component is provided on the C-shaped plate. The driving component 2 drives the two C-shaped plates to be arranged around the corresponding outer periphery of the automobile exhaust pipe, and the positioning component is clamped on the outer periphery of the automobile exhaust pipe to fix the C-shaped plate relatively to the automobile exhaust pipe.

[0015] Preferably, drive component 2 includes a mounting block and two motors 2, the mounting block is connected to the workbench through drive component 3, motor 2 is fixedly connected to the mounting block, two C-shaped plates are rotatably connected to the mounting block through connecting rods, and the rotating shafts rotatably connected to the mounting block by the two connecting rods are fixedly connected to the corresponding motors 2.

[0016] The two C-shaped plates are controlled respectively by two motors. When single-tube welding is performed, only one of the C-shaped plates needs to be driven to move, thereby improving the flexibility of the welding device.

[0017] Preferably, the positioning assembly includes three claws evenly spaced along the outer circumference of the C-shaped plate, the three claws are slidingly connected to the C-shaped plate along the radial direction of the C-shaped plate, and a driving assembly four is provided in the C-shaped plate to drive the three claws to move synchronously.

[0018] The three clamping claws are clamped on the outer periphery of the automobile exhaust pipe, so that the C-shaped plate and the automobile exhaust pipe are relatively fixed, thereby ensuring the stability of the C-shaped plate during the welding process.

[0019] Preferably, drive component four includes gears corresponding to each claw and an arc-shaped rack arranged in a C-shaped plate, the arc-shaped rack is coaxially arranged with the C-shaped plate and slidably connected with the C-shaped plate, the arc-shaped rack is meshed with each gear, and the claw is provided with a tooth segment meshed with the corresponding gear. Motor three is fixedly connected to the C-shaped plate, and the output end of motor three is fixedly connected to one of the gears. Motor three drives the gear to drive the arc-shaped rack and the corresponding claw to move, and the arc-shaped rack drives other gears to drive the corresponding claws to move synchronously.

[0020] Preferably, a mounting arm is fixedly connected to the workbench, and the driving component three includes an electric telescopic cylinder 1 and an electric telescopic cylinder 2. The electric telescopic cylinder 1 is fixedly installed on the mounting arm, and the driving end of the electric telescopic cylinder 1 is fixedly connected to the mounting plate. The electric telescopic cylinder 2 is fixedly installed on the mounting plate, and the driving end of the electric telescopic cylinder 2 is connected to the mounting block. The electric telescopic cylinder 1 drives the mounting plate to drive the mounting block to move in the horizontal direction, and the electric telescopic cylinder 2 drives the mounting block to move in the vertical direction.

[0021] The electric telescopic cylinder 1 drives the mounting plate to move in the front-rear direction, and the electric telescopic cylinder 2 drives the mounting block to move in the up-down direction, so that when clamping and fixing the automobile exhaust pipe and muffler, the driving mounting block drives the C-shaped plate away from the top of the clamping mechanism, providing avoidance for the placement of the automobile exhaust pipe and muffler.

[0022] Preferably, the mounting block is slidingly connected to the second electric telescopic cylinder along the extension direction of the rotating shaft of the connecting rod, and the side of the clamping claw away from the welding gun is rotationally connected to a push rod, and a torsion spring is provided at the rotating connection. When the clamping claw moves in a direction close to the automobile exhaust pipe, the push rod contacts the automobile exhaust pipe before the clamping claw.

[0023] The beneficial effects of the present invention are:

[0024] (1) The present invention provides two symmetrical C-shaped plates so that the two C-shaped plates are arranged around two side-by-side automobile exhaust pipes, and drives the welding gun to move along the C-shaped plates, thereby achieving synchronous welding of the side-by-side automobile exhaust pipes and improving welding efficiency;

[0025] (2) The clamping mechanism for clamping the automobile exhaust pipe and the muffler in the present invention does not need to be rotated with the welding gun during the welding process, thereby ensuring the stability of the automobile parts and the accuracy of the welding position docking during the welding process;

[0026] (3) The present invention achieves driving the welding gun to move along the periphery of the automobile exhaust pipe through the cooperation of the C-shaped guide groove, the C-shaped ring groove, the sliding column and the driving column, so that the welding head of the welding gun can move to the starting welding position, thereby achieving continuous ring welding and improving welding efficiency and weld quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The figure is a schematic diagram of the overall structure of the welding device for welding automobile parts of the present invention.

[0028] Figure 2 It is a cross-sectional view of a welding device for welding automobile parts according to the present invention.

[0029] Figure 3 It is a structural schematic diagram of the welding mechanism of the welding device for welding automobile parts of the present invention when the right side is shown.

[0030] Figure 4It is a plan view showing the right side of the welding mechanism of the welding device for welding automobile parts of the present invention.

[0031] Figure 5 It is a structural schematic diagram of the welding mechanism of the welding device for welding automobile parts of the present invention when the left side is shown.

[0032] Figure 6 The present invention is a schematic structural diagram of a welding gun of a welding device for welding automobile parts.

[0033] Figure 7 It is a cross-sectional view of a C-shaped plate of a welding device for welding automobile parts according to the present invention showing the clamping claws.

[0034] Figure 8 It is a cross-sectional view of a C-shaped plate of a welding device for welding automobile parts according to the present invention when an arc-shaped rack is displayed.

[0035] Fig. 9 The present invention is a schematic diagram of assembling a welding gun and a C-shaped plate of a welding device for welding automobile parts.

[0036] Reference numerals:

[0037] 1. Workbench; 11. Mounting arm; 12. Electric telescopic cylinder 1; 13. Mounting plate; 14. Electric telescopic cylinder 2; 15. Mounting block; 16. Motor 2; 2. Placement seat; 21. Clamping arm; 22. Electric telescopic cylinder 3; 3. Automobile exhaust pipe; 4. Muffler; 5. Welding gun; 50. Driving column; 51. Driving block; 52. Support rod; 53. Support wheel; 6. C-shaped plate; 61. Connecting rod; 62. Claw; 63. Gear; 64. Arc rack; 65. Tooth segment; 66. Motor 3; 7. C-shaped ring groove; 71. Conveyor belt; 72. Transmission wheel; 73. Motor 1; 8. C-shaped guide groove; 81. Sliding column; 82. Sliding block; 83. Spring; 9. Push rod. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0039] like Figures 1 to 9As shown, the welding device for welding automobile parts of the present invention comprises a workbench 1, a clamping mechanism and a welding mechanism arranged on the workbench 1. The clamping mechanism comprises a placement seat 2 arranged at intervals on the workbench 1 and a clamping arm 21 rotatably connected to the placement seat 2, and an electric telescopic cylinder 3 22 driving the clamping arm 21 to rotate is installed on the placement seat 2. The automobile exhaust pipe 3 and the muffler 4 are placed on the placement seat 2, so that the automobile exhaust pipe 3 and the holes on the muffler 4 that need to be welded are aligned, and the electric telescopic cylinder 3 22 drives the clamping arm 21 to rotate and press on the automobile exhaust pipe 3 and the muffler 4, so as to clamp and fix the automobile exhaust pipe 3 and the muffler 4.

[0040] The extension direction of the automobile exhaust pipe 3 is defined as the left-right direction. The welding mechanism includes two welding guns 5 and two C-shaped plates 6 symmetrically arranged front and back. A coaxially arranged C-shaped annular groove 7 and a C-shaped guide groove 8 are provided on the right side of the C-shaped plate 6. A conveyor belt 71 and a driving component 1 for driving the conveyor belt 71 to rotate are provided in the C-shaped annular groove 7. The C-shaped guide groove 8 is located on the outside of the C-shaped annular groove 7. The central angle of the C-shaped guide groove 8 is smaller than the central angle of the C-shaped annular groove 7, and the diagonal of the central angle of the C-shaped guide groove 8 coincides with the diagonal of the central angle of the C-shaped annular groove 7.

[0041] like Figure 3 , Figure 6 and Fig. 9 As shown, a slide post 81 is slidably connected in the C-shaped guide groove 8, and a slider 82 is rotatably connected to the slide post 81. The welding gun 5 is arranged perpendicular to the slide post 81. The slider 82 is slidably connected to the welding gun 5 along the extension direction of the welding gun 5. One end of the welding gun 5 located on the outer periphery of the C-shaped plate 6 is elastically connected to the slider 82 through a spring 83. The welding gun 5 is slidably connected to the driving post 50 along its extension direction. The driving post 50 is rotatably matched with the welding gun 5 and is fixedly connected to the conveyor belt 71 through a driving block 51. The conveyor belt 71 drives the driving post 50 to move along the C-shaped annular groove 7, and the driving post 50 drives the welding gun 5 and the slide post 81 to move along the C-shaped guide groove 8. When the slide post 81 is located at the first end of the C-shaped guide groove 8 and the driving post 50 is located at the first end of the C-shaped annular groove 7, and when the slide post 81 is located at the second end of the C-shaped guide groove 8 and the driving post 50 is located at the second end of the C-shaped annular groove 7, the contact point between the welding head of the welding gun 5 and the automobile exhaust pipe 3 is the same.

[0042] During welding, the C-shaped plate 6 is coaxially arranged with the corresponding automobile exhaust pipe 3, wherein the sliding column 81 on the rear side of the C-shaped plate 6 is located at the first end of the C-shaped guide groove 8, i.e., the upper end, and the driving column 50 is located at the first end of the C-shaped annular groove 7, i.e., the upper end; the sliding column 81 on the front side of the C-shaped plate 6 is located at the second end of the C-shaped guide groove 8, i.e., the lower end, and the driving column 50 is located at the second end of the C-shaped annular groove 7, i.e., the lower end; the welding head of the welding gun 5 is aligned with the welding point of the automobile exhaust pipe 3 and the muffler 4, so that during the simultaneous welding process, the welding guns 5 on the two C-shaped plates 6 will not interfere with each other, thereby improving the welding efficiency.

[0043] Taking the welding process of the C-shaped plate 6 on the front side as an example, the driving component 1 drives the conveyor belt 71 to rotate clockwise, and the conveyor belt 71 drives the driving column 50 to move clockwise along the C-shaped annular groove 7, and the driving column 50 drives the welding gun 5 and the sliding column 81 to move along the C-shaped groove. At the same time, the welding head of the welding gun 5 moves along the periphery of the automobile exhaust pipe 3. When the sliding column 81 moves to the second end of the C-shaped guide groove 8, the sliding column 81 stops moving, and the driving column 50 continues to move driven by the conveyor belt 71. While the driving column 50 pushes the welding gun 5 to rotate relative to the sliding column 81, the welding gun 5 moves upward relative to the driving column 50 and the sliding column 81 under the extrusion of the automobile exhaust pipe 3, stretching the spring 83, and when the driving column 50 moves to the shortest vertical distance with the sliding column 81, as shown in FIG. Figure 4 As shown in the state in the figure, and when it continues to move, the elastic force of the spring 83 is gradually released, so that the welding head of the welding gun 5 always moves along the weld. When the driving column 50 moves to the second end of the C-shaped ring groove 7, the welding head of the welding gun 5 moves to the starting position, thereby realizing continuous ring welding between the automobile exhaust pipe 3 and the muffler 4, improving the processing efficiency and the welding quality.

[0044] like Figure 3 and Figure 6 As shown, in order to prevent the welding head of the welding gun 5 from being completely covered by the automobile exhaust pipe 3 and affecting welding, in this embodiment, a support rod 52 is fixedly connected to the left side of the welding gun 5, and a support wheel 53 is rotatably connected to the support rod 52, and the central axis of the support wheel 53 is parallel to the central axis of the C-shaped plate 6. When the welding gun 5 moves along the C-shaped guide groove 8, the support wheel 53 abuts against the outer periphery of the automobile exhaust pipe 3, so that there is a space between the welding head of the welding gun 5 and the automobile exhaust pipe 3 for outputting welding wire and inert gas.

[0045] like Figure 4 and Figure 5 As shown, the driving component 1 includes a transmission wheel 72 arranged at both ends of the C-shaped ring groove 7 and a motor 73 fixedly connected to the C-shaped plate 6. The transmission wheel 72 is rotatably connected to the C-shaped plate 6. The conveyor belt 71 is surrounded by two transmission wheels 72, one of which is fixedly connected to the output end of the motor 73. The motor 73 drives the transmission wheel 72 to rotate, and the transmission wheel 72 drives the conveyor belt 71 to rotate.

[0046] like Figures 1 to 3As shown, a mounting arm 11 is fixedly connected to the workbench 1, an electric telescopic cylinder 12 is fixedly connected to the mounting arm 11, a mounting plate 13 is fixedly connected to the driving end of the electric telescopic cylinder 12, an electric telescopic cylinder 2 14 is fixedly connected to the mounting plate 13, a mounting block 15 is connected to the driving end of the electric telescopic cylinder 2 14, and two C-shaped plates 6 are rotatably connected to the mounting block 15 through connecting rods 61. The electric telescopic cylinder 12 drives the mounting plate 13 to move in the front-rear direction, and the electric telescopic cylinder 2 14 drives the mounting block 15 to move in the up-down direction, so that when clamping and fixing the automobile exhaust pipe 3 and the muffler 4, the mounting block 15 is driven to drive the C-shaped plate 6 away from the top of the clamping mechanism, providing a clearance for the placement of the automobile exhaust pipe 3 and the muffler 4.

[0047] Motors 16 are fixedly installed on the left and right sides of the mounting block 15, respectively. The rotating shafts of the two connecting rods 61 rotatably connected to the mounting block 15 are fixedly connected to the corresponding motors 16, respectively. The motors 16 drive the two connecting rods 61 to drive the two C-shaped plates 6 to surround the outer periphery of the automobile exhaust pipe 3 or to be away from the automobile exhaust pipe 3. The two motors 16 are used to control the two C-shaped plates 6 respectively. When welding a single pipe, only one of the C-shaped plates 6 needs to be driven to move, thereby improving the flexibility of the welding device.

[0048] like Figure 4 , Figure 7 and Figure 8 As shown, a positioning assembly is provided on the C-shaped plate 6, and the positioning assembly includes three claws 62 evenly spaced along the outer periphery of the C-shaped plate 6, and the three claws 62 are slidably connected to the C-shaped plate 6 along the radial direction of the C-shaped plate 6, and a driving assembly 4 is provided inside the C-shaped plate 6 to drive the three claws 62 to move synchronously. The three claws 62 are clamped on the outer periphery of the automobile exhaust pipe 3, so that the C-shaped plate 6 and the automobile exhaust pipe 3 are relatively fixed, and the stability of the C-shaped plate 6 during the welding process is ensured.

[0049] Driving component four includes gears 63 corresponding to each claw 62 and an arcuate rack 64 arranged in the C-shaped plate 6. The arcuate rack 64 is coaxially arranged with the C-shaped plate 6 and slidably connected with the C-shaped plate 6. The arcuate rack 64 meshes with each gear 63. The claw 62 is provided with a tooth segment 65 meshing with the corresponding gear 63. A motor three 66 is fixedly connected to the C-shaped plate 6. The output end of the motor three 66 is fixedly connected to one of the gears 63. The motor three 66 drives the gear 63 to drive the arcuate rack 64 and the corresponding claw 62 to move. The arcuate rack 64 drives other gears 63 to drive the corresponding claw 62 to move synchronously.

[0050] like Figure 5As shown, the mounting block 15 is slidably connected with the electric telescopic cylinder 2 14 in the left-right direction, and the sliding distance is small. The side of the clamping claw 62 away from the welding gun 5 is rotatably connected with the push rod 9, and a torsion spring is provided at the rotation connection. The end of the push rod 9 close to the automobile exhaust pipe 3 is made of rubber material with greater friction. The C-shaped plate 6 is arranged around the outer periphery of the automobile exhaust pipe 3. When the motor 3 66 drives the clamping claw 62 to move in the direction close to the automobile exhaust pipe 3, the push rod 9 contacts the automobile exhaust pipe 3 before the clamping claw 62. After the push rod 9 contacts the automobile exhaust pipe 3, during the process of the clamping claw 62 continuing to move, the friction between the push rod 9 and the automobile exhaust pipe 3 causes the push rod 9 to push the C-shaped plate 6 to move in the direction close to the muffler 4, so that the welding head on the welding gun 5 is close to the position to be welded, and the welding wire sent out from the welding head can quickly contact the welding position.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A welding device for welding automobile parts, comprising a workbench, a clamping mechanism and a welding mechanism arranged on the workbench, characterized in that: The welding mechanism comprises two symmetrically arranged C-shaped plates and two welding guns, a first side of the C-shaped plate is provided with a coaxially arranged C-shaped ring groove and a C-shaped guide groove, a conveyor belt and a driving component for driving the conveyor belt to rotate are arranged in the C-shaped ring groove, the C-shaped guide groove is located outside the C-shaped ring groove, the central angle of the circle opposite to the C-shaped guide groove is smaller than the central angle of the circle opposite to the C-shaped ring groove, and the diagonal of the central angle of the circle opposite to the C-shaped guide groove coincides with the diagonal of the central angle of the circle opposite to the C-shaped ring groove; A slide column is slidably connected in the C-shaped guide groove, the welding gun is perpendicular to the slide column and rotates with the slide column, the welding gun slides with the slide column and is elastically connected along its extension direction, the welding gun is slidably connected with a driving column along its extension direction, the driving column rotates with the welding gun and is fixedly connected to the conveyor belt, the conveyor belt drives the driving column to move along the C-shaped annular groove, the driving column drives the welding gun and the slide column to move along the C-shaped guide groove, when the slide column is located at the first end of the C-shaped guide groove and the driving column is located at the first end of the C-shaped annular groove, when the slide column is located at the second end of the C-shaped guide groove and the driving column is located at the second end of the C-shaped annular groove, the contact point of the welding head of the welding gun and the exhaust pipe of the automobile is the same; The welding gun is fixedly connected with a support rod, and a support wheel is rotatably connected with the support rod. The central axis of the support wheel is parallel to the central axis of the C-shaped plate. When the welding gun moves along the C-shaped guide groove, the support wheel abuts against the outer periphery of the automobile exhaust pipe, so that there is a space between the welding head of the welding gun and the automobile exhaust pipe for outputting welding wire and inert gas; The driving assembly 1 includes a transmission wheel arranged at both ends of the C-shaped ring groove and a motor 1 fixedly connected to the C-shaped plate, the transmission wheel is rotatably connected to the C-shaped plate, and the conveyor belt is arranged around the two transmission wheels, one of which is fixedly connected to the output end of the motor 1, the motor 1 drives the transmission wheel to rotate, and the transmission wheel drives the conveyor belt to rotate; The workbench is provided with a driving component 2 for driving two C-shaped plates to move, and a positioning component is provided on the C-shaped plate. The driving component 2 drives the two C-shaped plates to surround the outer periphery of the corresponding automobile exhaust pipe, and the positioning component is clamped on the outer periphery of the automobile exhaust pipe so that the C-shaped plate is relatively fixed to the automobile exhaust pipe; Driving component 2 includes a mounting block and two motors 2. The mounting block is connected to the workbench through driving component 3. Motor 2 is fixedly connected to the mounting block. The two C-shaped plates are rotatably connected to the mounting block through connecting rods respectively. The rotating shafts rotatably connected to the mounting block by the two connecting rods are fixedly connected to the corresponding motors 2 respectively.

2. The welding device for welding automobile parts according to claim 1, characterized in that: The positioning assembly comprises three claws evenly spaced along the outer circumference of the C-shaped plate, the three claws are slidably connected to the C-shaped plate along the radial direction of the C-shaped plate, and a driving assembly 4 is arranged inside the C-shaped plate to drive the three claws to move synchronously.

3. The welding device for welding automobile parts according to claim 2, characterized in that: Driving component four includes gears corresponding to each claw and an arc-shaped rack arranged in the C-shaped plate. The arc-shaped rack is coaxially arranged with the C-shaped plate and slidably connected with the C-shaped plate. The arc-shaped rack is meshed with each gear. The claw is provided with a tooth segment meshing with the corresponding gear. Motor three is fixedly connected to the C-shaped plate. The output end of motor three is fixedly connected to one of the gears. Motor three drives the gear to drive the arc-shaped rack and the corresponding claw to move. The arc-shaped rack drives other gears to drive the corresponding claws to move synchronously.

4. The welding device for welding automobile parts according to claim 3, characterized in that: A mounting arm is fixedly connected to the workbench, and a driving component three includes an electric telescopic cylinder 1 and an electric telescopic cylinder 2. The electric telescopic cylinder 1 is fixedly installed on the mounting arm, and a driving end of the electric telescopic cylinder 1 is fixedly connected to a mounting plate. The electric telescopic cylinder 2 is fixedly installed on the mounting plate, and a driving end of the electric telescopic cylinder 2 is connected to a mounting block. The electric telescopic cylinder 1 drives the mounting plate to drive the mounting block to move in a horizontal direction, and the electric telescopic cylinder 2 drives the mounting block to move in a vertical direction.

5. The welding device for welding automobile parts according to claim 4, characterized in that: The mounting block is slidably connected to the second electric telescopic cylinder along the extending direction of the rotating shaft of the connecting rod. The side of the clamping claw away from the welding gun is rotatably connected to a push rod, and a torsion spring is provided at the rotating connection. When the clamping claw moves in the direction close to the automobile exhaust pipe, the push rod contacts the automobile exhaust pipe before the clamping claw.

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