A high-precision dust-free laser welding equipment for sheet metal parts

Abstract

This invention discloses a high-precision, dust-free laser welding equipment for sheet metal parts, relating to the field of intelligent welding technology for sheet metal parts. It includes a base, a welding table, a conveyor, a welding arm assembly, a laser welding head, and a vision sensor. The welding table is fixed above the base, and the conveyor is mounted above the welding table. The outer end of the conveyor has evenly spaced insertion holes. A clamping assembly capable of fixing various workpieces is mounted on the conveyor. A welding arm assembly is located behind the welding table, and a laser welding head is mounted on the welding arm assembly. A vision sensor is located on the outer side of the laser welding head. A dust extraction assembly is located above the welding arm assembly, and a rapid unloading assembly is located on the left side of the welding arm assembly. This high-precision, dust-free laser welding equipment for sheet metal parts can fix sheet metal parts of different shapes in different ways and achieve rapid unloading using the unloading assembly.

Description

Technical Field

[0001] This invention relates to the field of intelligent welding technology for sheet metal parts, specifically to a high-precision dust-free laser welding equipment for sheet metal parts. Background Technology

[0002] Intelligent laser welding equipment can adapt to various weld seams, eliminating the need for workers to hold the welding head while welding. It can align the welding head with the weld seam at the same angle, and during the welding process, the welding head moves at a uniform speed on the weld seam, improving the welding effect of sheet metal parts.

[0003] Chinese invention patent CN116352269B discloses a laser welding device and method for processing hardware parts. A second slider is slidably connected between two support plates. A top rod is slidably connected at the center of the second slider. The bottom end of the top rod passes through the second slider and is rotatably connected to an inclined plate via a hinge. A first tension spring and a second spring are respectively provided on the upper and lower sides of the top rod. The two ends of the first tension spring are fixedly connected to the inner top of the top of the top rod and the top of the second slider, respectively. The two ends of the second spring are fixedly connected to the top of the inclined plate and the bottom of the second slider, respectively. An inclination sensor is provided at the bottom of the inclined plate. This invention can maintain the same moving speed, emission angle, and laser beam focusing length of the first laser welding head when welding on straight welds at different angles, preventing problems such as irregular welds, easy burn-through of the welded object, or insufficient welding.

[0004] Chinese invention patent CN113182677B discloses a laser welding workstation for turbine hardware, including a platform, a blister tray, a mounting frame, a feeding structure, a gripping structure, a clamping structure, a welding structure, and a dust removal structure. A support leg is fixedly connected to the top of the platform, and a fixed plate is fixedly connected to the end of the support leg away from the platform. A first motor is fixedly connected to the bottom of the fixed plate, and a rotating table is fixedly connected to one end of the output shaft of the first motor. The bottom of the blister tray has evenly distributed placement slots, in which hardware parts are placed. Beneficial effects: This workstation enables continuous, fully automated welding of hardware parts, resulting in uniform welds without beveling, cracks, or burrs. This significantly accelerates the welding efficiency and improves the welding quality of the hardware parts.

[0005] Based on existing solutions and actual production and processing, the existing high-precision dust-free laser welding equipment for sheet metal parts is inconvenient for fixing sheet metal parts of different shapes. During batch processing, it is not possible to quickly remove sheet metal parts and clamping components. Therefore, we propose a high-precision dust-free laser welding equipment for sheet metal parts to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a high-precision dust-free laser welding equipment for sheet metal parts, so as to solve the problems mentioned in the background art of existing high-precision dust-free laser welding equipment for sheet metal parts, which are inconvenient to fix sheet metal parts of different shapes and cannot quickly remove sheet metal parts and clamping components during batch processing.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-precision dust-free laser welding equipment for sheet metal parts, comprising a base, a welding table, a conveyor, a welding arm assembly, a laser welding head, and a vision sensor.

[0008] A welding table is fixed above the base, and a conveyor is installed above the welding table. The outer end of the conveyor is evenly provided with insertion holes, and a clamping assembly capable of fixing a variety of workpieces is installed on the conveyor.

[0009] A welding arm assembly is provided at the rear of the welding station. A laser welding head is installed on the welding arm assembly, and a vision sensor is provided on the outside of the laser welding head. A dust collection assembly is provided above the welding arm assembly.

[0010] A quick unloading assembly is provided on the left side of the welding arm assembly.

[0011] By adopting the above technical solution, sheet metal parts of different shapes can be fixed in different forms, and unloading can be achieved quickly using the unloading assembly.

[0012] Preferably, the clamping assembly includes a first side plate, a second side plate, a screw, a lifting block, a first electric telescopic rod, a first clamping plate, a motor, a second clamping plate, a spring, and a push plate. The second side plate is provided on the front side of the first side plate. A screw is rotatably installed inside both the first and second side plates, and the outer end of the screw is threadedly connected to the lifting block. The first electric telescopic rod is fixed to the outer side of the lifting block. The first clamping plate is rotatably installed at the output end of the first electric telescopic rod on the first side plate. A motor is fixed to the output end of the first electric telescopic rod on the second side plate. The second clamping plate is fixed to the output end of the motor. Springs are fixed to the inner walls of both the first and second clamping plates, and a push plate is fixed to the outer end of the springs.

[0013] Preferably, both the first side plate and the second side plate are connected to the conveyor via insertion holes.

[0014] Preferably, the welding arm assembly includes a movable base, a base box, a flat plate, a motor base, a first robotic arm, a mounting base, a mounting box, a first U-shaped frame, a second U-shaped frame, a protective box, and a bracket. The base box is disposed above the movable base. A flat plate is fixed to the motor output end inside the base box. A motor base is mounted on the flat plate, and the motor on the motor base is fixedly connected to the first robotic arm. A mounting base is fixed to the output end of the motor at the end of the first robotic arm, and a mounting box is fixed to the outer side of the mounting base. A first U-shaped frame is fixed to the motor output end inside the mounting box, and a second U-shaped frame is fixed to the motor outside the first U-shaped frame. A protective box is fixed to the outer side of the second U-shaped frame, and a bracket is fixedly mounted to the motor output end inside the protective box. A laser welding head and a vision sensor are fixed on the bracket.

[0015] Preferably, the vacuuming assembly includes a processing box, a vacuum head, a processing plate, and an air pump. The processing box is connected to the vacuum head via a hose, and the processing plate is installed inside the processing box. The input end of the air pump is connected to the processing box.

[0016] Preferably, the unloading assembly includes a vertical plate, a mounting frame, a second electric telescopic rod, a connecting block, a truss, a T-shaped plate, a third electric telescopic rod, a disc, a connecting rod, a ring, a rectangular box, an adjusting rod, a suction cup, a suction box, and a negative pressure pump. The mounting frame is fixed to the inner top surface of the vertical plate, and the second electric telescopic rod is fixed to the upper surface of the mounting frame. A connecting block is fixed to the output end of the second electric telescopic rod, and a truss is fixed to the lower surface of the connecting block. A T-shaped plate is slidably installed inside the truss. The third electric telescopic rod is fixed below the T-shaped plate, and a disc is fixed to the bottom end of the third electric telescopic rod. The top end of the connecting rod is rotatably installed inside the disc, and a ring is fixed to the bottom end of the connecting rod. An adjusting rod passes through the inside of the ring, and a rectangular box is fixed to the outer side of the adjusting rod. A suction cup is fixed to the outer end of the rectangular box. A suction box is fixed to the upper surface of the truss, and a negative pressure pump is installed on the outer side of the suction box.

[0017] Preferably, the connecting block is located inside the mounting frame.

[0018] Preferably, the inner surface of the ring has screw holes at equal angles, and the ring is fixedly connected to the adjusting rod by screws.

[0019] Preferably, the rectangular box is fixedly connected to the suction box via a flexible tube.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the high-precision dust-free laser welding equipment for sheet metal parts can fix sheet metal parts of different shapes in different forms and achieve rapid unloading by using the unloading component;

[0021] 1. The conveyor is equipped with a clamping assembly capable of fixing various workpieces. The clamping assembly includes a first side plate, a second side plate, a screw, a lifting block, a first electric telescopic rod, a first clamping plate, a motor, a second clamping plate, a spring, and a push plate. The clamping assembly can fix sheet metal parts with circular, arc-shaped, and frame-shaped structures. The first and second clamping plates press down on the sheet metal parts, and the spring and push plate hold the sheet metal parts in place, thus fixing sheet metal parts of different shapes in different ways.

[0022] 2. A dust collection component is installed above the welding arm assembly. The dust collection component includes a processing box, a dust collection head, a processing plate, and an air pump. The dust collection component absorbs debris and fumes to prevent fumes from polluting the environment.

[0023] 3. A quick unloading assembly is provided on the left side of the welding arm assembly. The unloading assembly includes a vertical plate, a mounting frame, a second electric telescopic rod, a connecting block, a truss, a T-shaped plate, a third electric telescopic rod, a disc, a connecting rod, a ring, a rectangular box, an adjusting rod, a suction cup, a suction box, and a negative pressure pump. The unloading assembly is used for quick unloading. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the axial structure of the present invention from the front view;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the first and second side plates of the present invention;

[0026] Figure 3 This is a schematic diagram of the clamping component structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the welding arm assembly structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the cross-sectional structure of the processing box of the present invention;

[0029] Figure 6 This is a schematic diagram of the rear-view axis structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the T-shaped plate and truss connection structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the connection structure between the connecting rod and the disk of the present invention;

[0032] Figure 9 This is a bottom view of the second clamping plate structure of the present invention.

[0033] In the diagram: 1. Base; 2. Welding table; 3. Conveyor; 4. Insertion hole; 5. First side plate; 6. Second side plate; 7. Screw; 8. Lifting block; 9. First electric telescopic rod; 10. First clamping plate; 11. Motor; 12. Second clamping plate; 13. Spring; 14. Push plate; 15. Moving seat; 16. Base box; 17. Flat plate; 18. Motor base; 19. First robotic arm; 20. Mounting seat; 21. Mounting box; 22. First U-shaped frame; 23. Second U-shaped frame; 24. 25. Protective box; 26. Bracket; 27. Vision sensor; 28. Laser welding head; 29. ​​Processing box; 30. Dust suction head; 31. Processing plate; 32. Vertical plate; 33. Mounting frame; 34. Second electric telescopic rod; 35. Connecting block; 36. Truss; 37. T-shaped plate; 38. Third electric telescopic rod; 39. Disc; 40. Connecting rod; 41. Ring; 42. Rectangular box; 43. Adjusting rod; 44. Suction cup; 45. Suction box; 46. Negative pressure pump; 47. Air suction pump. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Please see Figures 1-9 Existing high-precision dust-free laser welding equipment for sheet metal parts is inconvenient for fixing sheet metal parts of different shapes. During batch processing, it is not possible to quickly remove sheet metal parts and clamping components. In order to solve this technical problem, this embodiment discloses the following technical content.

[0036] A high-precision dust-free laser welding equipment for sheet metal parts includes a base 1, a welding table 2, a conveyor 3, a welding arm assembly, a laser welding head 27, and a vision sensor 26.

[0037] A welding table 2 is fixed above the base 1, and a conveyor 3 is installed above the welding table 2. The outer end of the conveyor 3 has evenly spaced insertion holes 4. The conveyor 3 is equipped with clamping components capable of fixing various workpieces, such as… Figure 1 , Figure 2 , Figure 3 and Figure 9As shown, the clamping assembly includes a first side plate 5, a second side plate 6, a screw 7, a lifting block 8, a first electric telescopic rod 9, a first clamping plate 10, a motor 11, a second clamping plate 12, a spring 13, and a push plate 14. The second side plate 6 is provided on the front side of the first side plate 5. The screw 7 is rotatably installed inside both the first side plate 5 and the second side plate 6, and the lifting block 8 is threaded to the outer end of the screw 7. The first electric telescopic rod 9 is fixed to the outer side of the lifting block 8. The first clamping plate 10 is rotatably installed at the output end of the first electric telescopic rod 9 on the first side plate 5. The motor 11 is fixed to the output end of the first electric telescopic rod 9 on the second side plate 6. The second clamping plate 12 is fixed to the output end of the motor 11. The spring 13 is fixed to the inner wall of both the first clamping plate 10 and the second clamping plate 12, and the push plate 14 is fixed to the outer end of the spring 13. The first side plate 5 and the second side plate 6 are both connected to the conveyor 3 through the insertion hole 4.

[0038] Assemble the sheet metal parts that need to be welded, and perform spot welding first through the laser welding head 27. During spot welding, the dust collection component absorbs the fumes. Spot welding can slightly fix the sheet metal parts that need to be welded and fix the weld seam.

[0039] The bottom end of the first side plate 5 is inserted into the interior of the insertion hole 4. The frame-shaped sheet metal part is placed on the upper surface of the conveyor 3. The rear side of the sheet metal part is in contact with the inner side of the first side plate 5. The second side plate 6 is installed in a suitable position. The smooth outer side of the second side plate 6 is in contact with the outer side of the sheet metal part. When the spacing of the insertion hole 4 is not sufficient to fix the frame-shaped sheet metal part between the second side plate 6 and the first side plate 5, the second clamping plate 12 can be oriented towards the sheet metal part. The front and rear positions of the second clamping plate 12 can be adjusted by the first electric telescopic rod 9. The height of the lifting block 8, the first electric telescopic rod 9 and the second clamping plate 12 can be adjusted by rotating the screw 7, so that the outer side of the second clamping plate 12 is in close contact with the outer side of the sheet metal part.

[0040] When the sheet metal part has a circular structure, such as Figure 1 As shown, the first clamping plate 10 and the second clamping plate 12 are arranged opposite to each other. The height of the first clamping plate 10 and the second clamping plate 12 is adjusted according to the size of the circular sheet metal part. The height of the lifting block 8 is adjusted by rotating the screw 7, thereby adjusting the height of the first clamping plate 10 and the second clamping plate 12. The distance between the first clamping plate 10 and the second clamping plate 12 is adjusted by the first electric telescopic rod 9. The center of the sheet metal part coincides with the center of the output shaft of the motor 11. The circular sheet metal part is fixed by the first clamping plate 10 and the second clamping plate 12.

[0041] When welding with laser welding head 27, the second clamping plate 12 and the circular sheet metal part can be rotated by motor 11, and the first clamping plate 10 rotates at the output end of the first electric telescopic rod 9. The rotation of the circular sheet metal part can improve the welding speed.

[0042] When the sheet metal part has an elliptical structure, the height of the first clamping plate 10 and the second clamping plate 12 are adjusted according to the size of the elliptical sheet metal part. When the sheet metal part is fixed by the first clamping plate 10 and the second clamping plate 12, the center of the elliptical sheet metal part coincides with the center of the output shaft of the motor 11. After the laser welding head 27 welds the top of the elliptical sheet metal part, the remaining parts of the elliptical sheet metal part can be welded by rotating the second clamping plate 12 and the elliptical sheet metal part by the motor 11.

[0043] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, a welding arm assembly is located behind the welding station 2. A laser welding head 27 is mounted on the welding arm assembly, and a vision sensor 26 is located on the outer side of the laser welding head 27. The welding arm assembly includes a movable base 15, a base box 16, a flat plate 17, a motor base 18, a first robotic arm 19, a mounting base 20, a mounting box 21, a first U-shaped frame 22, a second U-shaped frame 23, a protective box 24, and a bracket 25. The base box 16 is located above the movable base 15, and the flat plate 17 is fixed to the motor output end inside the base box 16. A motor mount 18 is mounted on the plate 17, and the motor on the motor mount 18 is fixedly connected to the first robotic arm 19. The output end of the motor at the end of the first robotic arm 19 is fixed with a mounting base 20, and a mounting box 21 is fixed on the outer side of the mounting base 20. A first U-shaped frame 22 is fixed on the motor output end inside the mounting box 21, and a second U-shaped frame 23 is fixed on the motor outside the first U-shaped frame 22. A protective box 24 is fixed on the outer side of the second U-shaped frame 23, and a bracket 25 is fixedly mounted on the motor output end inside the protective box 24.

[0044] Before welding through the laser welding head 27, the vision sensor 26 acquires and processes images of the weld seam to extract information such as the position, shape, and size of the weld seam. This information is then combined with the motion control system of the welding arm assembly to achieve precise positioning and welding of the robot. The vision sensor 26 captures and processes images of the weld seam to calculate the positional deviation of the weld seam relative to the laser welding head 27. The welding arm assembly control system adjusts the posture and position of the welding arm assembly according to the deviation value, so that the welding arm assembly can accurately align with the weld seam and perform welding.

[0045] When the laser welding head 27 moves, the motor inside the base box 16 drives the plate 17 to rotate on the horizontal interface, the motor on the motor base 18 drives the first robotic arm 19 to rotate, the motor at the end of the first robotic arm 19 drives the mounting base 20 to rotate, the motor inside the mounting box 21 drives the first U-shaped frame 22 to rotate, the motor on the outside of the first U-shaped frame 22 drives the second U-shaped frame 23 to rotate, and the motor inside the protective box 24 drives the bracket 25 to rotate, thereby adjusting the position of the vision sensor 26 and the laser welding head 27;

[0046] A dust collection assembly is provided above the welding arm assembly. The dust collection assembly includes a processing box 28, a dust collection head 29, a processing plate 30, and an air suction pump 46. The processing box 28 is connected to the dust collection head 29 via a hose, and the processing plate 30 is installed inside the processing box 28. The input end of the air suction pump 46 is connected to the processing box 28.

[0047] During the welding process, welding debris and fumes are drawn into the processing box 28 through the suction head 29 and hose under the action of the suction pump 46. After being processed by the processing plate 30, clean air flows out from the inside of the suction pump 46.

[0048] A quick-unloading unloading assembly is provided on the left side of the welding arm assembly. The unloading assembly includes a vertical plate 31, a mounting frame 32, a second electric telescopic rod 33, a connecting block 34, a truss 35, a T-shaped plate 36, a third electric telescopic rod 37, a disc 38, a connecting rod 39, a ring 40, a rectangular box 41, an adjusting rod 42, a suction cup 43, a suction box 44, and a negative pressure pump 45. The mounting frame 32 is fixed to the inner side of the top of the vertical plate 31, and the second electric telescopic rod 33 is fixed to the upper surface of the mounting frame 32. The connecting block 34 is fixed to the output end of the second electric telescopic rod 33, and the truss 35 is fixed to the lower surface of the connecting block 34. The T-shaped plate 36 is slidably installed inside the truss 35, and the lower part of the T-shaped plate 36 is fixed. A third electric telescopic rod 37 is fixedly installed, and a disc 38 is fixedly installed at the bottom end of the third electric telescopic rod 37. The top end of a connecting rod 39 is rotatably installed inside the disc 38, and a ring 40 is fixed at the bottom end of the connecting rod 39. An adjusting rod 42 passes through the inside of the ring 40, and a rectangular box 41 is fixed on the outer side of the adjusting rod 42. A suction cup 43 is fixed at the outer end of the rectangular box 41. A suction box 44 is fixed on the upper surface of the truss 35, and a negative pressure pump 45 is installed on the outer side of the suction box 44. A connecting block 34 is located inside the mounting frame 32. Screw holes are opened at equal angles inside the ring 40. The ring 40 is fixedly connected to the adjusting rod 42 by screws, and the rectangular box 41 is fixedly connected to the suction box 44 by a hose.

[0049] like Figure 1 and Figure 6 As shown, multiple sets of clamping components are installed on the conveyor 3, which enables the mass production of sheet metal parts. Each set of sheet metal parts is arranged in the same way as the clamping components, and the distance between each set of sheet metal parts and the clamping components is the same. The state is the same each time it moves to the laser welding head 27, so there is no need to frequently adjust the welding route.

[0050] The welded sheet metal workpiece is conveyed to the leftmost end by the conveyor 3. The electric wheel on the T-shaped plate 36 slides inside the truss 35. The third electric telescopic rod 37 drives the suction cup 43 to move downward, so that a set of suction cups 43 is in close contact with the first side plate 5, a set of suction cups 43 is in close contact with the second side plate 6, and a set of suction cups 43 is in close contact with the sheet metal workpiece. Under the action of the negative pressure pump 45, the gas flows from the suction cup 43 to the suction box 44, and then flows out from the output end of the negative pressure pump 45, so that the suction cup 43 is in close contact with the clamping assembly and the sheet metal workpiece. The third electric telescopic rod 37 raises the suction cup 43, so that the clamping assembly and the sheet metal workpiece leave the conveyor 3. Then, under the action of the second electric telescopic rod 33, the connecting block 34 and the truss 35 move to the left, thereby moving the clamping assembly and the sheet metal workpiece, and unloading the clamping assembly and the sheet metal workpiece. A receiving device for the clamping assembly and the sheet metal workpiece is set on the left side of the device.

[0051] Rotate the connecting rod 39 on the disc 38 to rotate the suction cup 43 on the horizontal interface. Rotate the adjusting rod 42 on the outside of the ring 40 to rotate the suction cup 43 on the vertical interface. After rotating the suction cup 43 on the vertical interface, fix the adjusting rod 42 and the ring 40 with screws. Adjust the orientation of the disc 43 according to the clamping assembly and sheet metal parts.

[0052] The above completes a series of operations for the high-precision dust-free laser welding equipment for sheet metal parts. Any content not described in detail in this manual is existing technology known to those skilled in the art.

[0053] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sheet metal high-precision dust-free laser welding equipment, comprising a base (1), a welding table (2), a conveyor (3), a welding arm assembly, a laser welding head (27) and a visual sensor (26), characterized in that: the welding table (2) is fixed above the base (1), the conveyor (3) is installed above the welding table (2), and the outer end of the conveyor (3) is uniformly provided with a jack (4), and the conveyor (3) is provided with a clamping assembly capable of fixing various workpieces; a welding arm assembly is arranged behind the welding table (2), a laser welding head (27) is arranged on the welding arm assembly, a visual sensor (26) is arranged on the outer side of the laser welding head (27), and a dust suction assembly is arranged above the welding arm assembly; a quick discharging unloading assembly is arranged on the left side of the welding arm assembly, the unloading assembly comprises a vertical plate (31), a mounting frame (32), a second electric telescopic rod (33), a connecting block (34), a truss (35), a T-shaped plate (36), a third electric telescopic rod (37), a disc (38), a connecting rod (39), a circular ring (40), a rectangular box (41), an adjusting rod (42), a suction cup (43), a suction box (44) and a negative pressure pump (45), the mounting frame (32) is fixed to the inner side of the top end of the vertical plate (31), the second electric telescopic rod (33) is fixed to the upper surface of the mounting frame (32), the output end of the second electric telescopic rod (33) is fixed with the connecting block (34), the lower surface of the connecting block (34) is fixed with the truss (35), the T-shaped plate (36) is slidably installed in the truss (35), the third electric telescopic rod (37) is fixed below the T-shaped plate (36), the bottom end of the third electric telescopic rod (37) is fixedly installed with the disc (38), the top end of the connecting rod (39) is rotatably installed in the disc (38), the bottom end of the connecting rod (39) is fixed with the circular ring (40), the adjusting rod (42) penetrates through the inside of the circular ring (40), the outer side of the adjusting rod (42) is fixed with the rectangular box (41), the outer end of the rectangular box (41) is fixed with the suction cup (43), the upper surface of the truss (35) is fixed with the suction box (44), and the outer side of the suction box (44) is installed with the negative pressure pump (45).

2. The high-precision dust-free laser welding equipment for sheet metal parts according to claim 1, characterized in that: Said clamping assembly comprises a first side plate (5), a second side plate (6), a screw rod (7), a lifting block (8), a first electric telescopic rod (9), a first clamping plate (10), a motor (11), a second clamping plate (12), a spring (13) and a push plate (14), the front side of the first side plate (5) is provided with the second side plate (6), the inside of the first side plate (5) and the second side plate (6) is rotatably installed with the screw rod (7), the outer end of the screw rod (7) is threadedly connected with the lifting block (8), the outer side of the lifting block (8) is fixedly connected with the first electric telescopic rod (9), the output end of the first electric telescopic rod (9) on the first side plate (5) is rotatably installed with the first clamping plate (10), the output end of the first electric telescopic rod (9) on the second side plate (6) is fixedly connected with the motor (11), the output end of the motor (11) is fixedly connected with the second clamping plate (12), the inner wall of the first clamping plate (10) and the second clamping plate (12) is fixedly connected with the spring (13), and the outer end of the spring (13) is fixedly connected with the push plate (14).

3. The high-precision dust-free laser welding equipment for sheet metal parts according to claim 2, characterized in that: The first side plate (5) and the second side plate (6) are connected with the conveyor (3) through the jack (4).

4. The high-precision dust-free laser welding equipment for sheet metal parts according to claim 1, characterized in that: Said welding arm assembly comprises a moving seat (15), a bottom box (16), a flat plate (17), a motor seat (18), a first mechanical arm (19), a mounting seat (20), a mounting box (21), a first U-shaped frame (22), a second U-shaped frame (23), a protection box (24) and a support (25), the top of the moving seat (15) is provided with the bottom box (16), the motor output end in the bottom box (16) is fixedly connected with the flat plate (17), the flat plate (17) is installed with the motor seat (18), and the motor on the motor seat (18) is fixedly connected with the first mechanical arm (19), the output end of the motor at the tail end of the first mechanical arm (19) is fixedly connected with the mounting seat (20), the outer side of the mounting seat (20) is fixedly connected with the mounting box (21), the motor output end in the mounting box (21) is fixedly connected with the first U-shaped frame (22), the motor on the outer side of the first U-shaped frame (22) is fixedly connected with the second U-shaped frame (23), the outer side of the second U-shaped frame (23) is fixedly connected with the protection box (24), the motor output end in the protection box (24) is fixedly connected with the support (25), and the support (25) is fixedly connected with the laser welding head (27) and the visual sensor (26).

5. The high-precision dust-free laser welding equipment for sheet metal parts according to claim 1, characterized in that: Said dust suction assembly comprises a processing box (28), a dust suction head (29), a processing plate (30) and a suction pump (46), the dust suction head (29) is connected with the processing box (28) through a hose, and the processing plate (30) is installed in the processing box (28), and the input end of the suction pump (46) is connected with the processing box (28).

6. The high-precision dust-free laser welding equipment for sheet metal parts according to claim 1, characterized in that: The connecting block (34) is located in the inside of the mounting frame (32).

7. The high-precision dust-free laser welding equipment for sheet metal parts according to claim 1, characterized in that: The inside of the circular ring (40) is equiangularly provided with screw holes, and the circular ring (40) is fixedly connected with the adjusting rod (42) through screws.

8. The high-precision dust-free laser welding equipment for sheet metal parts according to claim 1, characterized in that: The rectangular box (41) is fixedly connected with the suction box (44) through a hose.

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