A welding displacement device for an automobile bumper beam

Abstract

The application discloses a kind of welding displacement devices of automobile crash beam, including track frame and displacement structure, the displacement structure includes function frame, the function frame includes main shaft, the main shaft is equipped with connecting frame, two support arms are hingedly equipped on the connecting frame, the support arm end is equipped with clamping structure, the clamping structure bottom is hingedly equipped with air cylinder between main shaft, the main shaft both ends are equipped with walking structure, the function frame is equipped with power structure for driving walking structure to move, the track frame includes two symmetrical side plates, the side plate is equipped with positioning slot, the walking structure moves in positioning slot, fixed shaft is equipped between two side plates, the fixed shaft is rotatably equipped with swing structure connected with function frame, the device realizes the efficient displacement of crash beam continuous welding operation, greatly reduces the clamping process of crash beam and the capacity limit to crash beam.

Description

Technical Field

[0001] This invention relates to the field of automotive anti-collision beam processing, specifically to a welding displacement device for automotive anti-collision beams. Background Technology

[0002] The anti-collision beam is an important component of the car body structure. It is located inside the front and rear bumpers and is usually made of materials such as steel or high-strength plastics. Its main functions are to absorb energy, protect passengers, and improve structural stability. The welding of the anti-collision beam is very critical because it directly affects the safety performance of the vehicle. In the car manufacturing process, advanced automated welding technologies, such as robotic welding systems, are usually used to ensure welding quality and consistency. Therefore, welding positioners used in conjunction with robotic welding systems are needed to improve welding efficiency.

[0003] For example, a Chinese patent discloses a welding displacement device for an automotive anti-collision beam (publication number: CN117161665A), which positions both the automotive anti-collision beam and the mounting beam, reducing the need for spot welding positioning before welding the anti-collision beam and the mounting beam, thus improving welding efficiency. Another example is a welding displacement device for welding automotive anti-collision beams (publication number: CN107671474A), which directly positions and fixes the automotive anti-collision beam using a first and third positioning device, and directly positions and fixes the connecting beam using a second positioning device. After positioning and fixing, welding can proceed directly without setting the position of the connecting beam on the automotive anti-collision beam or requiring spot welding, thus greatly saving welding time. Both of these patents improve processing efficiency through clamping, fixing, and positional changes of the anti-collision beam. However, neither of these patents, nor existing technologies, achieve efficient transfer of the anti-collision beam welding process. The clamping process of the anti-collision beam and the capacity limitations of the anti-collision beam greatly restrict the welding displacement efficiency of the anti-collision beam. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned difficulties and provide a welding displacement device for automobile anti-collision beams.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a welding displacement device for an automobile anti-collision beam, comprising a track frame and a displacement structure, wherein the displacement structure comprises a functional frame, the functional frame comprises a main shaft, a connecting frame is provided on the main shaft, two support arms are hinged on the connecting frame, a clamping structure is provided at the end of the support arms, a cylinder is hinged between the bottom of the clamping structure and the main shaft, a traveling structure is provided at both ends of the main shaft, a power structure for driving the traveling structure to move is provided on the functional frame, the track frame comprises two symmetrically arranged side plates, a positioning groove is provided on the side plates, the traveling structure moves in the positioning groove, a fixed shaft is provided between the two side plates, and a swing structure connected to the functional frame is rotatably provided on the fixed shaft.

[0006] As an improvement: the clamping structure includes a housing, on which a clamping member one is provided; a circular shell is provided on the rear side of the housing; a winding drum is rotatably provided inside the circular shell; a sliding groove is provided on the top of the housing; a clamping member two is slidably provided on the top of the housing; a slider that slidably engages with the sliding groove is provided at the bottom of the clamping member two; wire grooves are provided on both sides of the sliding groove; driving blocks are provided at both ends of the slider extending into the wire grooves; a wire wheel is rotatably provided at one end of the wire groove; and the other end is connected to the circular shell; a steel wire is wound on the winding drum; one end of the steel wire passes through the wire groove and connects to one end of the driving block; and the other end of the steel wire passes through another wire groove and the wire wheel and connects to the other end of the driving block. The clamping structure achieves efficient clamping of the anti-collision beam.

[0007] As an improvement: a motor is provided inside the rear end of the support arm, a sprocket is provided at the output end of the motor, a chain groove is provided on the inner side of the support arm, a connector that is hinged to the circular shell is provided at the front end of the support arm, a sprocket is provided in the middle of the winding drum, an arc groove is provided on the rear side of the circular shell, the chain groove is connected to the inner side of the circular shell through the arc groove, and the sprockets one and two are connected by chain drive, providing power for the clamping action of the clamping structure through the support arm structure.

[0008] As an improvement: the power structure includes a second motor and a rotating shaft. The output end of the second motor is provided with a worm gear, and the rotating shaft is provided with a turbine gear that cooperates with the worm gear. The rotating shaft is rotatably located in the through hole inside the main shaft. The second motor, the worm gear, and the turbine gear are respectively located in a second fixed box and a first fixed box on the main shaft. The power structure provides power for the movement of the displacement structure.

[0009] As an improvement: the walking structure includes a fixed frame, a gear is rotatably mounted on the inner side of the fixed frame, a spline shaft is mounted on one side of the gear through a through hole on the fixed frame, the end of the rotating shaft is provided with a spline groove that mates with the spline shaft, the fixed frame is provided with a turntable on the same side of the spline shaft that rotatably mates with the end of the main shaft, a first rotating wheel and a second rotating wheel are rotatably mounted on the inner side of the fixed frame, the first rotating wheel and the second rotating wheel respectively mate with the inner side and the outer side of the positioning groove, and a toothed belt that meshes with the gear is provided on the outer side of the positioning groove. The walking structure drives the movement of the displacement structure.

[0010] As an improvement: the swing structure includes a rotating ring, which is rotatably coupled with a fixed shaft. The rotating ring is provided with a telescopic rod, and the end of the telescopic rod is provided with a connecting plate. The rear side of the main shaft is provided with a horizontal plate connected by a connecting frame. The connecting plate is connected to the horizontal plate. Through the swing structure, the angle control of the displacement structure at different positions can be realized.

[0011] As an improvement: multiple displacement structures and swing structures are provided around the fixed axis, and at least one swing structure connected to an adjacent displacement structure is adjacent. A limiting platform is provided on the side of the rotating ring, and the limiting platforms on adjacent rotating rings provide limiting cooperation to prevent collisions during individual movement of the displacement structures.

[0012] As an improvement: the positioning groove is a deformed structure of an equilateral triangle. The minimum inner diameter of the arc groove at the top of the positioning groove is greater than the distance between the traveling structure and the fixed shaft when the telescopic rod is retracted. This arc groove is set as a welding area. The distance between the two arc grooves at the bottom of the positioning groove and the fixed shaft is less than the distance between the traveling structure and the fixed shaft when the telescopic rod is fully extended. The two arc grooves are set as a gripping area and a placement area, respectively, to limit the range of the positioning groove.

[0013] The advantages of this invention compared to existing technologies are: this device achieves efficient displacement of the anti-collision beam during continuous welding operations, greatly reduces the clamping process of the anti-collision beam and the capacity limitation on the anti-collision beam, and improves processing efficiency. Specifically:

[0014] 1. By using the clamping structure in conjunction with the functional frame and cylinder, the anti-collision beam can be effectively clamped while changing the angle of the anti-collision beam to make it more conducive to welding operations. Furthermore, the anti-collision beam is clamped during movement, reducing the impact of the clamping process on the displacement action.

[0015] 2. By coordinating the power structure and the walking structure, the free drive and movement of the displacement structure are realized. Within the positioning slot that restricts the movement drive, multiple individually moving displacement structures increase the displacement capacity of the anti-collision beam. The periodic displacement structure movement design improves the overall welding efficiency and displacement efficiency.

[0016] 3. By combining the sway structure and the functional frame, the angle of the displacement structure is limited, so that the overall angle is limited during individual movement, which facilitates the appropriate operation of the displacement structure in the corresponding area when gripping, welding and placing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a welding displacement device for an automotive anti-collision beam according to the present invention.

[0018] Figure 2 This is a schematic diagram of the displacement structure of a welding displacement device for an automotive anti-collision beam according to the present invention.

[0019] Figure 3 This is an exploded view of the displacement structure of a welding displacement device for an automotive anti-collision beam according to the present invention.

[0020] Figure 4 This is a structural schematic diagram of the functional frame of the welding displacement device for an automotive anti-collision beam according to the present invention.

[0021] Figure 5 This is a cross-sectional view of the functional frame of the welding displacement device for an automotive anti-collision beam according to the present invention.

[0022] Figure 6 This is a schematic diagram of the clamping structure of the welding displacement device for an automotive anti-collision beam according to the present invention.

[0023] Figure 7 This is a cross-sectional view of the clamping structure of the welding displacement device for an automotive anti-collision beam according to the present invention. Figure 1 .

[0024] Figure 8 This is a cross-sectional view of the clamping structure of the welding displacement device for an automotive anti-collision beam according to the present invention. Figure 2 .

[0025] Figure 9 This is a schematic diagram of the power structure of the welding displacement device for an automotive anti-collision beam according to the present invention.

[0026] Figure 10 This is a schematic diagram of the walking structure of the welding displacement device for an automobile anti-collision beam according to the present invention.

[0027] Figure 11 This is a schematic diagram of the track frame of the welding displacement device for an automobile anti-collision beam according to the present invention.

[0028] Figure 12 This is a cross-sectional view of the walking structure of a welding displacement device for an automotive anti-collision beam according to the present invention.

[0029] Figure 13 This is a functional partition diagram of the rail frame of the welding displacement device for an automobile anti-collision beam according to the present invention.

[0030] Figure 14 This is a schematic diagram of the swing structure of the welding displacement device for an automobile anti-collision beam according to the present invention.

[0031] Figure 15 This is a structural diagram of a welding displacement device for an automotive anti-collision beam according to the present invention.

[0032] As shown in the figure: 01. Feeding conveyor belt; 02. Positioning conveyor belt; 03. Blocking frame; 04. Discharge conveyor belt; 05. Anti-collision beam assembly; 051. Anti-collision beam; 0511. Positioning component; 052. Energy absorption box; 1. Welding displacement device; 2. Track frame; 3. Displacement structure; 4. Functional frame; 5. Clamping structure; 6. Cylinder; 7. Power structure; 8. Walking structure; 9. Swinging structure; 21. Side plate; 211. Positioning groove; 212. Toothed belt; 22. Fixed shaft; 23. Gripping area; 24. Welding area; 25. Placement area; 41. Main shaft; 42. Fixed box one; 43. Fixed box two; 44. Connecting frame; 45. Horizontal plate; 46. Support arm; 461. Motor 1; 462. Sprocket 1; 463. Chain groove; 464. Connector; 51. Housing; 511. Clamping component 1; 512. Round shell; 513. Slide groove; 514. Arc groove; 515. Wire groove; 516. Wire wheel; 52. Clamping component 2; 521. Slider; 522. Drive block; 53. Winding drum; 54. Sprocket 2; 55. Steel wire; 71. Motor 2; 72. Worm gear; 73. Shaft; 74. Turbine; 75. Spline groove; 81. Fixing frame; 82. Gear; 83. Spline shaft; 84. Rotary wheel 1; 85. Rotary wheel 2; 86. Turntable; 91. Rotary ring; 911. Limiting platform; 92. Telescopic rod; 93. Connecting plate. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings.

[0034] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 and attached Figure 11As shown, a welding displacement device for an automotive anti-collision beam includes a welding displacement device 1. The welding displacement device 1 includes a track frame 2 and a displacement structure 3. The displacement structure 3 includes a functional frame 4. The functional frame 4 includes a main shaft 41. A connecting frame 44 is provided on the main shaft 41. Two support arms 46 are hinged on the connecting frame 44. A clamping structure 5 is provided at the end of the support arm 46. A cylinder 6 is hinged between the bottom of the clamping structure 5 and the main shaft 41. Both ends of the main shaft 41 are provided with a traveling structure 8. A power structure 7 for driving the traveling structure 8 to move is provided on the functional frame 4. The track frame 2 includes two symmetrically arranged side plates 21. A positioning groove 211 is provided on the side plates 21. The traveling structure 8 moves in the positioning groove 211. A fixed shaft 22 is provided between the two side plates 21. A swing structure 9 connected to the functional frame 4 is rotatably provided on the fixed shaft 22.

[0035] Combined with appendix Figure 6 Appendix Figure 7 Appendix Figure 8 and attached Figure 15 As shown, the clamping structure 5 includes a housing 51, on which a clamping member 511 is provided. A circular shell 512 is provided on the rear side of the housing 51, and a winding drum 53 is rotatably provided inside the circular shell 512. A sliding groove 513 is provided on the top of the housing 51, and a second clamping member 52 is slidably provided on the top of the housing 51. The working surfaces of the first clamping member 511 and the second clamping member 52 match the anti-collision beam 051. The bottom of the second clamping member 52 is provided with a sliding engagement with the sliding groove 513. The slider 521 has wire grooves 515 on both sides of the sliding groove 513. The slider 521 has driving blocks 522 extending into the wire grooves 515 at both ends. One end of the wire groove 515 is equipped with a wire wheel 516, and the other end is connected to the round shell 512. The winding drum 53 has a steel wire 55 wound on it. One end of the steel wire 55 passes through the wire groove 515 and connects to one end of the driving block 522. The other end of the steel wire 55 passes through another wire groove 515 and the wire wheel 516 and connects to the other end of the driving block 522.

[0036] Working principle of clamping structure 5: The rotation of the winding drum 53 drives the steel wire 55 to move in the groove 515. The drive block 522 connected to both ends of the steel wire 55 moves under the drive of the steel wire 55, causing the slider 521 to move in the groove 513, which in turn drives the clamping part 2 52 to move on the housing 51. The clamping part 1 511 and the clamping part 2 52 cooperate to achieve the clamping effect on the anti-collision beam 051.

[0037] Combined with appendix Figure 5 and attached Figure 6As shown, a motor 461 is located inside the rear end of the support arm 46, and a sprocket 462 is located at the output end of the motor 461. A chain groove 463 is located on the inner side of the support arm 46, and a connector 464 is located at the front end of the support arm 46 that is hinged to the circular shell 512. A sprocket 54 is located in the middle of the winding drum 53, and an arc groove 514 is located on the rear side of the circular shell 512. The chain groove 463 communicates with the inner side of the circular shell 512 through the arc groove 514. The sprocket 462 and the sprocket 54 are connected by chain drive.

[0038] Working principle of support arm 46: Motor 1 461 drives sprocket 1 462 to rotate, which drives sprocket 2 54 to rotate through chain transmission, thereby realizing the rotation of the winding drum 53. The arc groove 514 prevents the round shell 512 from colliding with the chain during rotation. By setting motor 1 461 at the rear end of support arm 46, the volume of the front connector 464 and clamping structure 5 of support arm 46 is reduced, which facilitates gripping work.

[0039] Combined with appendix Figure 4 and Figure 9 As shown, the power structure 7 includes a second motor 71 and a rotating shaft 73. The output end of the second motor 71 is provided with a worm gear 72, and the rotating shaft 73 is provided with a turbine 74 that cooperates with the worm gear 72. The rotating shaft 73 is rotatably disposed in the through hole inside the main shaft 41. The second motor 71, the worm gear 72 and the turbine 74 are respectively disposed in the second fixed box 43 and the first fixed box 42 on the main shaft 41.

[0040] The working principle of the power structure 7 is as follows: Motor 2 71 drives worm 72 to rotate. Through the cooperation of worm 72 and turbine 74, turbine 74 rotates, which drives shaft 73 to rotate, providing kinetic energy to the walking structure 8. Worm 72 and turbine 74 have self-locking properties, so that the rotation of shaft 73 cannot drive turbine 74 to rotate worm 72. Therefore, when the displacement structure 3 moves to a certain position, motor 2 71 stops, thus achieving the fixing effect of displacement structure 3.

[0041] Combined with appendix Figure 10 and attached Figure 12 As shown, the walking structure 8 includes a fixed frame 81. A gear 82 is rotatably mounted on the inner side of the fixed frame 81. A splined shaft 83 is mounted on one side of the gear 82 through a through hole on the fixed frame 81. A splined groove 75 that mates with the splined shaft 83 is provided at the end of the rotating shaft 73. A turntable 86 that rotatably mates with the end of the main shaft 41 is provided on the same side of the fixed frame 81 as the splined shaft 83. A first rotating wheel 84 and a second rotating wheel 85 are rotatably mounted on the inner side of the fixed frame 81. The first rotating wheel 84 and the second rotating wheel 85 respectively mate with the inner and outer sides of the positioning groove 211. A toothed belt 212 that meshes with the gear 82 is provided on the outer surface of the positioning groove 211.

[0042] Working principle of the walking structure 8: Driven by the rotating shaft 73, the splined shaft 83 and splined groove 75 cooperate to drive the gear 82 to rotate. The gear 82 cooperates with the toothed belt 212, so that the gear 82 drives the walking structure 8 to move in the positioning groove 211. During this process, the cooperation between the rotating wheel 1 84 and the rotating wheel 2 85 and the positioning groove 211 not only reduces the frictional resistance between the walking structure 8 and the positioning groove 211, but also allows the gear 82 to maintain a cooperative relationship with the toothed belt 212. Through the cooperation between the turntable 86 and the main shaft 41, the weight of the anti-collision beam 051 carried by the displacement structure 3 is mainly borne by the rotating wheel 1 84 or the rotating wheel 2 85, and partly by the gear 82.

[0043] Combined with appendix Figure 1 Appendix Figure 4 and attached Figure 14 As shown, the swing structure 9 includes a rotating ring 91, which is rotatably engaged with the fixed shaft 22. The rotating ring 91 is provided with a telescopic rod 92, and the end of the telescopic rod 92 is provided with a connecting plate 93. The rear side of the main shaft 41 is provided with a horizontal plate 45 connected by a connecting frame 44. The connecting plate 93 is connected to the horizontal plate 45. Multiple displacement structures 3 and swing structures 9 are provided around the fixed shaft 22. At least one swing structure 9 connected to an adjacent displacement structure 3 is adjacent. The side of the rotating ring 91 is provided with a limiting platform 911, and the limiting platforms 911 on adjacent rotating rings 91 are in a limiting engagement.

[0044] Working principle of the swing structure 9: Driven by the walking structure 8, the displacement structure 3 moves along the positioning groove 211 and performs a unidirectional circling motion around the fixed shaft 22. Since the walking structure 8 and the functional frame 4 are in a rotating engagement relationship, the angle of the functional frame 4 cannot be controlled during the movement of the displacement structure 3. Through the swing structure 9, with the telescopic rod 92 connected, the horizontal plate 45 on the rear side of the functional frame 4 always faces the fixed shaft 22 during the circling movement, so that the angle of the functional frame 4 during the movement is controlled. During this process, the limiting platform 911 prevents adjacent displacement structures 3 from colliding during the movement.

[0045] Combined with appendix Figure 1 and Figure 13 As shown, the positioning groove 211 is a deformed equilateral triangle structure. The minimum inner diameter of the arc-shaped groove at the top of the positioning groove 211 is greater than the distance between the traveling structure 8 and the fixed shaft 22 when the telescopic rod 92 is retracted. Here, the arc-shaped groove is set as the welding area 24. The distance between the two arc-shaped grooves at the bottom of the positioning groove 211 and the fixed shaft 22 is less than the distance between the traveling structure 8 and the fixed shaft 22 when the telescopic rod 92 is fully extended. The two arc-shaped grooves are respectively set as the gripping area 23 and the placement area 25.

[0046] In specific implementations of this invention, as shown in the appendix Figure 1 and attached Figure 15As shown in the diagram, the anti-collision beam 051 is moved onto the positioning conveyor belt 02 via the feeding conveyor belt 01. After hitting the blocking frame 03 on the positioning conveyor belt 02, the anti-collision beam 051 stops moving, and the welding displacement device 1 is installed. At this time, the anti-collision beam 051 is located on one side of the welding displacement device 1. Driven by the power structure 7 and the walking structure 8, the displacement structure 3 moves along the positioning groove 211 to the gripping area 23. During this process, the two support arms 46 and the corresponding clamping structure 5 pass through the gaps between the feeding conveyor belt 01 and the positioning conveyor belt 02, and between the positioning conveyor belt 02 and the blocking frame 03, moving to below the anti-collision beam 051. The clamping structure 5 grips the anti-collision beam 051, and the gripping process is completed during the movement of the displacement structure 3. Subsequently, the displacement structure 3 carries the anti-collision beam 051 to the welding area 24. During this process, the angle of the clamping structure 5 is adjusted by the cylinder 6 so that the positioning part 0511 on the anti-collision beam 051 is in an upward position. The energy-absorbing box 052 is placed on the positioning part 0511 by the gripping robot or other means. The welding robot arm welds the anti-collision beam 051 and the energy-absorbing box 052 in the welding area 24 to form the anti-collision beam group 05. After welding, the displacement structure 3 moves to the placement area 25. The clamping structure 5 in this position places the anti-collision beam group 05 on the discharge conveyor belt 04. The anti-collision beam group 05 moves to the next process workshop with the discharge conveyor belt 04. The displacement structure 3 moves along the bottom positioning groove 211 to the gripping area 23 for the next gripping action. Multiple displacement structures 3 cycle to achieve continuous displacement of the anti-collision beam 051 during the welding operation.

[0047] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A welding displacement device for an automobile anti-collision beam, comprising a track frame (2) and a displacement structure (3), characterized in that: The displacement structure (3) includes a functional frame (4), the functional frame (4) includes a main shaft (41), a connecting frame (44) is provided on the main shaft (41), two support arms (46) are hinged on the connecting frame (44), a clamping structure (5) is provided at the end of the support arm (46), a cylinder (6) is hinged between the bottom of the clamping structure (5) and the main shaft (41), a walking structure (8) is provided at both ends of the main shaft (41), a power structure (7) for driving the walking structure (8) to move is provided on the functional frame (4), the track frame (2) includes two symmetrically arranged side plates (21), a positioning groove (211) is provided on the side plate (21), the walking structure (8) moves in the positioning groove (211), a fixed shaft (22) is provided between the two side plates (21), and a swing structure (9) connected to the functional frame (4) is rotatably provided on the fixed shaft (22). The swing structure (9) includes a rotating ring (91), which is rotatably engaged with a fixed shaft (22). The rotating ring (91) is provided with a telescopic rod (92), and the end of the telescopic rod (92) is provided with a connecting plate (93). The rear side of the main shaft (41) is provided with a horizontal plate (45) connected by a connecting frame (44), and the connecting plate (93) is connected to the horizontal plate (45). The displacement structure (3) and the swing structure (9) are provided in multiple ways around the fixed axis (22). At least one swing structure (9) connected to the displacement structure (3) is adjacent to each other. The side of the rotating ring (91) is provided with a limiting platform (911). The limiting platforms (911) on the adjacent rotating ring (91) are in a limiting fit. The positioning groove (211) is a deformed structure of an equilateral triangle. The minimum inner diameter of the arc groove at the top of the positioning groove (211) is greater than the distance between the walking structure (8) and the fixed shaft (22) when the telescopic rod (92) is retracted. The arc groove here is set as the welding area (24). The distance between the two arc grooves at the bottom of the positioning groove (211) and the fixed shaft (22) is less than the distance between the walking structure (8) and the fixed shaft (22) when the telescopic rod (92) is fully extended. The two arc grooves are set as the gripping area (23) and the placement area (25) respectively.

2. The welding displacement device for an automobile anti-collision beam according to claim 1, characterized in that: The clamping structure (5) includes a housing (51), on which a clamping member (511) is provided. A circular shell (512) is provided on the rear side of the housing (51), and a winding drum (53) is rotatably provided inside the circular shell (512). A sliding groove (513) is provided on the top of the housing (51), and a clamping member (52) is slidably provided on the top of the housing (51). A slider (521) is provided at the bottom of the clamping member (52) that slidably engages with the sliding groove (513). The sliding groove (513) has two sides... A wire groove (515) is provided. The slider (521) has two ends extending into the wire groove (515) and a drive block (522) is provided. One end of the wire groove (515) is rotatably provided with a wire wheel (516), and the other end is connected to the round shell (512). A steel wire (55) is wound on the winding drum (53). One end of the steel wire (55) passes through the wire groove (515) and connects to one end of the drive block (522). The other end of the steel wire (55) passes through another wire groove (515) and the wire wheel (516) and connects to the other end of the drive block (522).

3. The welding displacement device for an automobile anti-collision beam according to claim 2, characterized in that: The support arm (46) has a motor (461) inside its rear end. The output end of the motor (461) has a sprocket (462). The support arm (46) has a chain groove (463) inside its inner side. The support arm (46) has a connector (464) at its front end that is hinged to the round shell (512). The winding drum (53) has a sprocket (54) in the middle. The round shell (512) has an arc groove (514) at its rear side. The chain groove (463) is connected to the inner side of the round shell (512) through the arc groove (514). The sprocket (462) and the sprocket (54) are connected by a chain drive.

4. The welding displacement device for an automobile anti-collision beam according to claim 1, characterized in that: The power structure (7) includes a second motor (71) and a rotating shaft (73). The output end of the second motor (71) is provided with a worm (72). The rotating shaft (73) is provided with a turbine (74) that cooperates with the worm (72). The rotating shaft (73) is rotatably located in the through hole inside the main shaft (41). The second motor (71), the worm (72), and the turbine (74) are respectively located in the second fixed box (43) and the first fixed box (42) on the main shaft (41).

5. The welding displacement device for an automobile anti-collision beam according to claim 4, characterized in that: The walking structure (8) includes a fixed frame (81), a gear (82) is rotatably provided on the inner side of the fixed frame (81), a spline shaft (83) is provided on one side of the gear (82) through a through hole on the fixed frame (81), a spline groove (75) is provided at the end of the rotating shaft (73) to cooperate with the spline shaft (83), a turntable (86) is provided on the same side of the fixed frame (81) to rotatably cooperate with the end of the main shaft (41), a first rotating wheel (84) and a second rotating wheel (85) are rotatably provided on the inner side of the fixed frame (81), the first rotating wheel (84) and the second rotating wheel (85) respectively cooperate with the inner and outer sides of the positioning groove (211), and a toothed belt (212) that meshes with the gear (82) is provided on the outer side of the positioning groove (211).

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