A polygon stainless steel frame welding device

Abstract

The present invention discloses a welding device for a polygonal stainless steel frame, which relates to the technical field of stainless steel frame welding; it includes a base, a transportation mechanism is arranged on one side of the base, and a mounting column is arranged on the base. A positioning mechanism is rotatably mounted on the mounting column. The positioning mechanism includes a turntable rotatably mounted on the mounting column. Mounting brackets are arranged in an array on the turntable. A clamping mechanism is arranged on the mounting brackets. A control mechanism one and a control mechanism two are arranged on the turntable and below the positioning mechanism for controlling the clamping state of the workpiece by the clamping mechanism; A transfer mechanism is arranged in the top area of the mounting column for transferring the workpiece, and a welding mechanism is arranged in the top area of the mounting column; A detection mechanism is also arranged in the top area of the mounting column for quality inspection of the welded workpiece. The present invention can realize the butt joint operation of multiple rods and complete the welding operation, thereby improving work efficiency and eliminating cumbersome intermediate operations.

Description

Technical Field

[0001] The present invention relates to the technical field of stainless steel frame welding, and particularly relates to a welding device for a polygonal stainless steel frame. Background Art

[0002] A stainless steel frame is a frame or bracket made of stainless steel material, which is widely used in various fields, such as industry, construction, kitchen equipment, and storage systems, etc. In short, due to its durability, strength, and corrosion resistance characteristics, the stainless steel frame has become an important part of many industries, helping to improve work efficiency and space utilization rate. The existing stainless steel frames can be assembled according to structural requirements, and welding is a common connection method. The polygonal stainless steel frame is a common structure and is widely used, generally used as the base of a box or the base of a frame product, etc.; and this kind of polygonal steel frame is generally connected and fixed by welding, that is, multiple rods are butt-jointed end to end for welding operations, and the butt-joint operation requires manual operation. With a large number of rods, the butt-joint process is cumbersome and not convenient for improving welding efficiency; based on this, the present invention proposes a welding device that can realize the butt-joint operation of multiple rods and complete the welding operation, thereby improving work efficiency and eliminating the cumbersome intermediate operations. Summary of the Invention

[0003] Aiming at the above technical problems, the present invention can realize the butt-joint operation of multiple rods and complete the welding operation, thereby improving work efficiency and eliminating the cumbersome intermediate operations.

[0004] The solution adopted by the present invention is as follows: A welding device for a polygonal stainless steel frame, including a base. A transportation mechanism is arranged on one side of the base, and a mounting column is arranged on the base. A positioning mechanism is rotatably mounted on the mounting column. The positioning mechanism includes a turntable rotatably mounted on the mounting column. Mounting brackets are arranged in an array on the turntable. A clamping mechanism is arranged on the mounting brackets. The clamping mechanism includes two fixing plates slidably mounted on the mounting brackets; on the turntable and below the positioning mechanism, a control mechanism one and a control mechanism two are arranged for controlling the clamping state of the workpiece by the clamping mechanism; in the top area of the mounting column, a transfer mechanism is arranged for transferring the workpiece. The transfer mechanism includes a sliding seat three slidably mounted on the top of the mounting column. A transfer mounting frame is slidably arranged up and down on the sliding seat three. A clamping plate for clamping the workpiece is arranged on the transfer mounting frame; in the top area of the mounting column, a welding mechanism is arranged for welding the butt-jointed workpieces; the workpiece is in a polygonal closed structure, butt-jointed end to end, and the welding mechanism performs multi-angle welding at the butt-joint of the workpiece; in the top area of the mounting column, a detection mechanism is also arranged for quality inspection of the welded workpieces. The detection mechanism clamps the workpieces on both sides of the welding joint and applies pressure.

[0005] Preferably, the transportation mechanism includes a conveyor belt disposed on the base, and an installation part is arranged on the conveyor belt for positioning and installing the workpiece; a calibration mechanism is also arranged on the base for calibrating the position of the workpiece; the calibration mechanism includes a second motor and a second lead screw arranged on the base, the second motor is used to drive the second lead screw, a second sliding seat is slidably installed on the base, a positioning electric cylinder is arranged on the second sliding seat, a positioning plate is arranged on the telescopic rod of the positioning electric cylinder, and the second sliding seat and the second lead screw form a screw pair.

[0006] Preferably, the positioning mechanism includes a first motor arranged on the installation column, and a first gear is arranged on the output shaft of the first motor, and the first gear and the turntable form a gear pair.

[0007] Preferably, the clamping mechanism includes guide posts arranged at the end of the installation bracket, a control sliding seat is slidably matched with the guide posts, and a first spring is connected between the control sliding seat and the installation bracket; a control push wheel is arranged on the control sliding seat, an inclined surface is arranged on the fixed plate, and the control push wheel contacts the inclined surface to push the fixed plate, and a second spring for providing elastic force is connected between the two fixed plates.

[0008] Preferably, a fastening frame is arranged on the control sliding seat, a fastening seat is telescopically arranged at the bottom of the installation bracket, a third spring for providing elastic force is connected between the fastening seat and the installation bracket, and an adsorption part is arranged at one end of the fastening seat, and the fastening frame and the fastening seat are fastened to fix the control sliding seat; a pushing part is arranged at the bottom of the control sliding seat, the pushing part is pushed by a first control mechanism, and the adsorption part is adsorbed and controlled by a second control mechanism.

[0009] Preferably, the first control mechanism includes a first support plate arranged on the installation column, a control pushing electric cylinder is arranged on the first support plate, a push wheel is arranged on the telescopic rod of the control pushing electric cylinder, and the push wheel contacts the pushing part to push the control sliding seat.

[0010] Preferably, the second control mechanism includes a second support plate arranged on the installation column, an adsorption electromagnet is arranged on the second support plate, and the adsorption electromagnet adsorbs the adsorption part to move the fastening seat.

[0011] Preferably, the transfer mechanism includes a third support plate arranged on the installation column, a third motor and a third lead screw are arranged on the third support plate, and the third lead screw is driven by the third motor; a third sliding seat is slidably installed on the third support plate, and the third sliding seat and the third lead screw form a screw pair; position electric cylinders are arranged on both sides of the third sliding seat, the telescopic rods of the position electric cylinders are connected to the transfer installation frame, and a clamping electric cylinder is arranged on the transfer installation frame, and the clamping electric cylinder is used to control the movement of the clamping plate.

[0012] Preferably, the welding mechanism includes a fourth support plate disposed on the mounting post. A welding control cylinder is arranged on the fourth support plate. A welding mounting plate is arranged on the telescopic rod of the welding control cylinder. Two docking control cylinders are arranged on the welding mounting plate. An outer ring is arranged on the telescopic rod of the docking control cylinder. An inner ring is rotatably mounted on the inner side of the outer ring. A welding arm for welding is arranged on the inner side of the inner ring. A control motor is arranged on the outer side of the outer ring. A control gear is arranged on the output shaft of the control motor. The control gear and the inner ring form a gear pair.

[0013] Preferably, the detection mechanism includes a fifth support plate disposed on the mounting post. A torsion motor is arranged on the fifth support plate. A limit oil cylinder is arranged on the output shaft of the torsion motor. A mounting table is arranged on the telescopic rod of the limit oil cylinder. A limit clamping cylinder is arranged on the mounting table. A limit shaft is arranged on the telescopic rod of the limit clamping cylinder. The limit shaft clamps the workpiece and rotates to apply pressure to detect the welding quality of the workpiece.

[0014] The beneficial effects of the present invention compared with the prior art are as follows: (1) The workpiece is placed on the conveyor belt for transportation. The workpiece is transferred by the transfer mechanism, that is, it is transferred to the mounting bracket. The end of the workpiece is pushed by the positioning plate to correct the positions of both ends of the workpiece and complete the head-to-tail docking. (2) The control wheel is used to push the inclined surface at the lower end of the fixed plate, so that the two fixed plates approach each other to fix the workpiece, achieving stable docking and facilitating subsequent welding. (3) The limit shaft is controlled by the limit clamping cylinder to fix the workpiece. The fixed area is located on both sides of the welding area. Then, the torsion motor drives the limit oil cylinder to rotate to twist and press the workpiece to detect the welding quality, that is, whether the welded joint cracks under the application of a preset load. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the overall bottom structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the transportation mechanism structure of the present invention.

[0018] Figure 4 It is a schematic diagram of the clamping mechanism structure of the present invention.

[0019] Figure 5 It is a schematic diagram of the clamping mechanism and the second control mechanism of the present invention.

[0020] Figure 6 It is a schematic diagram of the partial structure of the clamping mechanism of the present invention.

[0021] Figure 7 It is a schematic diagram of the transfer mechanism structure of the present invention.

[0022] Figure 8 This is a schematic diagram of the partial structure of the transfer mechanism of the present invention.

[0023] Figure 9 This is a schematic diagram of the structure of the welding mechanism of the present invention.

[0024] Figure 10 This is a schematic diagram of the outer ring structure of the present invention.

[0025] Figure 11 This is a schematic diagram of the partial structure of the welding mechanism of the present invention.

[0026] Figure 12 This is a schematic diagram of the structure of the detection mechanism of the present invention.

[0027] Reference numerals: 1 - base; 2 - mounting column; 3 - turntable; 301 - mounting bracket; 4 - first motor; 5 - first gear; 6 - transmission belt; 601 - mounting portion; 7 - second motor; 8 - second lead screw; 9 - second sliding seat; 10 - positioning cylinder; 11 - positioning plate; 12 - first support plate; 13 - control push cylinder; 14 - push wheel; 15 - fixing plate; 16 - guide post; 17 - first spring; 18 - second spring; 19 - second support plate; 20 - adsorption electromagnet; 21 - control sliding seat; 22 - control push wheel; 23 - buckle seat; 24 - third spring; 25 - adsorption portion; 26 - buckling frame; 27 - pushing portion; 28 - third support plate; 29 - third motor; 30 - third sliding seat; 31 - position cylinder; 32 - transfer mounting frame; 33 - clamping cylinder; 34 - clamping plate; 35 - third lead screw; 36 - fourth support plate; 37 - welding control cylinder; 38 - welding mounting plate; 39 - docking control cylinder; 40 - outer ring; 41 - control motor; 42 - control gear; 43 - inner ring; 44 - welding arm; 45 - fifth support plate; 46 - torsion motor; 47 - limit oil cylinder; 48 - mounting table; 49 - limit clamping cylinder; 50 - limit shaft. Detailed implementation manners

[0028] Embodiment: As Figures 1 to 12 shown, a transportation mechanism is provided on one side of the base 1, and a mounting column 2 is provided on the base 1. The transportation mechanism includes a transmission belt 6 provided on the base 1, and a mounting portion 601 is provided on the transmission belt 6 for positioning and mounting a workpiece; a calibration mechanism is further provided on the base 1 for performing position calibration on the workpiece; the calibration mechanism includes a second motor 7 and a second lead screw 8 provided on the base 1, the second motor 7 is used to drive the second lead screw 8, a second sliding seat 9 is slidably mounted on the base 1, a positioning cylinder 10 is provided on the second sliding seat 9, a positioning plate 11 is provided on the telescopic rod of the positioning cylinder 10, and the second sliding seat 9 and the second lead screw 8 form a screw pair.

[0029] A positioning mechanism is rotatably mounted on the mounting post 2. The positioning mechanism includes a turntable 3 rotatably mounted on the mounting post 2. Mounting brackets 301 are arranged in an array on the turntable 3. A clamping mechanism is provided on the mounting brackets 301. The clamping mechanism includes two fixing plates 15 slidably mounted on the mounting brackets 301. Below the turntable 3 and within the positioning mechanism, a control mechanism one and a control mechanism two are provided to control the clamping state of the clamping mechanism on the workpiece. A transfer mechanism is provided in the top region of the mounting post 2 for transferring the workpiece. The transfer mechanism includes a sliding seat three 30 slidably mounted on the top of the mounting post 2. A transfer mounting frame 32 is vertically slidably arranged on the sliding seat three 30. A clamping plate 34 for clamping the workpiece is provided on the transfer mounting frame 32. A welding mechanism is provided in the top region of the mounting post 2 for welding the butted workpieces. The workpiece has a polygonal closed structure with the head and tail butted, and the welding mechanism performs multi-angle welding at the butting joint of the workpiece. A detection mechanism is also provided in the top region of the mounting post 2 for quality inspection of the welded workpiece. The detection mechanism clamps the workpiece on both sides of the welded joint and applies pressure.

[0030] The positioning mechanism includes a motor one 4 provided on the mounting post 2. A gear one 5 is provided on the output shaft of the motor one 4. The gear one 5 and the turntable 3 form a gear pair. The clamping mechanism includes a guide post 16 provided at the end of the mounting bracket 301. A control sliding seat 21 is slidably fitted on the guide post 16. A spring one 17 is connected between the control sliding seat 21 and the mounting bracket 301. A control push wheel 22 is provided on the control sliding seat 21. An inclined surface is arranged on the fixing plate 15. The control push wheel 22 contacts the inclined surface to push the fixing plate 15. A spring two 18 for providing elastic force is connected between the two fixing plates 15. A fastening frame 26 is provided on the control sliding seat 21. A fastening seat 23 is telescopically arranged at the bottom of the mounting bracket 301. A spring three 24 for providing elastic force is connected between the fastening seat 23 and the mounting bracket 301. And an adsorption portion 25 is provided at one end of the fastening seat 23. The fastening frame 26 and the fastening seat 23 are fastened to fix the control sliding seat 21. A pushing portion 27 is provided at the bottom of the control sliding seat 21. The pushing portion 27 is pushed by the control mechanism one, and the adsorption portion 25 is adsorbed and controlled by the control mechanism two.

[0031] The control mechanism one includes a support plate one 12 provided on the mounting post 2. A control pushing electric cylinder 13 is provided on the support plate one 12. A push wheel 14 is provided on the telescopic rod of the control pushing electric cylinder 13. The push wheel 14 contacts the pushing portion 27 to push the control sliding seat 21. The control mechanism two includes a support plate two 19 provided on the mounting post 2. An adsorption electromagnet 20 is provided on the support plate two 19. The adsorption electromagnet 20 adsorbs the adsorption portion 25 to move the fastening seat 23.

[0032] The transfer mechanism includes a third support plate 28 arranged on the mounting column 2. A third motor 29 and a third lead screw 35 are arranged on the third support plate 28, and the third lead screw 35 is driven by the third motor 29. A third slider 30 is slidably mounted on the third support plate 28, and the third slider 30 and the third lead screw 35 form a screw pair. Position cylinders 31 are arranged on both sides of the third slider 30. The telescopic rod of the position cylinder 31 is connected to the transfer mounting bracket 32. A clamping cylinder 33 is arranged on the transfer mounting bracket 32, and the clamping cylinder 33 is used to control the movement of the clamping plate 34.

[0033] The welding mechanism includes a fourth support plate 36 arranged on the mounting column 2. A welding control cylinder 37 is arranged on the fourth support plate 36. A welding mounting plate 38 is arranged on the telescopic rod of the welding control cylinder 37. Two docking control cylinders 39 are arranged on the welding mounting plate 38. An outer ring 40 is arranged on the telescopic rod of the docking control cylinder 39. An inner ring 43 is rotatably mounted on the inner side of the outer ring 40. A welding arm 44 for welding processing is arranged on the inner side of the inner ring 43. A control motor 41 is arranged on the outer side of the outer ring 40. A control gear 42 is arranged on the output shaft of the control motor 41, and the control gear 42 and the inner ring 43 form a gear pair.

[0034] The detection mechanism includes a fifth support plate 45 arranged on the mounting column 2. A torsion motor 46 is arranged on the fifth support plate 45. A limit oil cylinder 47 is arranged on the output shaft of the torsion motor 46. An installation table 48 is arranged on the telescopic rod of the limit oil cylinder 47. A limit clamping cylinder 49 is arranged on the installation table 48. A limit shaft 50 is arranged on the telescopic rod of the limit clamping cylinder 49. The limit shaft 50 clamps the workpiece and applies pressure by rotation to detect the welding quality of the workpiece.

[0035] The working principle is as follows: As Figures 1 to 12 shown, the workpiece is placed on the conveyor belt 6 for transportation. The workpiece is transferred by the transfer mechanism, that is, it is transferred to the mounting bracket 301. Specifically, by the operation of the third motor 29, the third lead screw 35 rotates, the third slider 30 slides, the transfer mounting bracket 32 moves, the height is adjusted by the position cylinder 31, the clamping cylinder 33 controls the clamping plate 34 to clamp and fix the workpiece, and then it is transferred to the mounting bracket 301 and located between the two fixing plates 15. The position of the positioning plate 11 is controlled by the positioning cylinder 10 so that it is located at both ends of the workpiece. By the operation of the second motor 7, the second lead screw 8 rotates, the second slider 9 slides, and the end of the workpiece is pushed by the positioning plate 11 to correct the positions of both ends of the workpiece for subsequent docking.

[0036] At the position where the transportation mechanism is located, the pushing wheel 22 is controlled to move by controlling the pushing electric cylinder 13. The pushing wheel 14 pushes the pushing part 27, causing the control sliding seat 21 to slide. The fastening frame 26 moves and fastens with the fastening seat 23 to fix the control sliding seat 21. When the control sliding seat 21 moves, the control pushing wheel 22 pushes the inclined surface at the lower end of the fixing plate 15, causing the two fixing plates 15 to approach each other to fix the workpiece.

[0037] By the operation of the first motor 4, the turntable 3 rotates, that is, the orientation of the turntable 3 is switched one by one, and the workpieces are transferred to the mounting bracket 301 one by one for docking, finally forming a polygonal closed structure. During welding, the welding mounting plate 38 is controlled to move by the welding control electric cylinder 37, so that the workpiece is located inside the inner ring 43. The outer ring 40 is controlled to move by the docking control electric cylinder 39, and the outer ring 40 is docked into a ring shape. By controlling the operation of the motor 41, the inner ring 43 rotates, that is, rotates around the workpiece docking area, and the welding operation is performed by the welding arm 44.

[0038] After welding is completed, the adsorption electromagnet 20 can be used to adsorb and control the adsorption part 25, causing the fastening seat 23 to slide, that is, the fastening seat 23 is disengaged from the fastening frame 26, and the control sliding seat 21 moves, and the fixing plate 15 releases the fixation of the workpiece. At this time, the workpieces are connected to form a polygonal structure. The height of the mounting table 48 is controlled by the limit oil cylinder 47, so that the limit shaft 50 is located outside the workpiece. The limit shaft 50 is controlled by the limit clamping electric cylinder 49 to fix the workpiece, and the fixing area is on both sides of the welding area. Then, the limit oil cylinder 47 is driven to rotate by the torsion motor 46 to apply torsion pressure to the workpiece, so as to detect the welding quality, that is, whether the welded joint cracks under the application of a preset load.

Claims

1. A polygonal stainless steel frame welding device, comprising a base (1), a transport mechanism being arranged on one side of the base (1), and a mounting column (2) being arranged on the base (1), characterized in that: A positioning mechanism is rotatably mounted on the mounting column (2), the positioning mechanism comprising a turntable (3) rotatably mounted on the mounting column (2), mounting brackets (301) are arranged in an array on the turntable (3), a clamping mechanism is provided on the mounting bracket (301), the clamping mechanism comprises two fixing plates (15) slidably mounted on the mounting bracket (301); a control mechanism 1 and a control mechanism 2 are provided on the turntable (3) and below the positioning mechanism, and are used to control the clamping state of the clamping mechanism on the workpiece; a transfer mechanism is provided in the top area of ​​the mounting column (2), and is used to transfer the workpiece, and the transfer mechanism comprises a sliding A slide seat (30) is mounted on the top of the mounting column (2), and a transfer mounting frame (32) is provided on the slide seat (30) for lifting and sliding, and a clamping plate (34) for clamping a workpiece is provided on the transfer mounting frame (32); a welding mechanism is provided in the top area of ​​the mounting column (2) for welding the workpieces that have been butted together; the workpieces are in a polygonal closed structure, butted end to end, and the welding mechanism performs multi-angle welding at the butt joint of the workpieces; a detection mechanism is also provided in the top area of ​​the mounting column (2) for performing quality detection on the welded workpieces, and the detection mechanism clamps the workpieces on both sides of the welding joint and applies pressure; The welding mechanism comprises a support plate four (36) arranged on the mounting column (2), a welding control electric cylinder (37) being arranged on the support plate four (36), a welding mounting plate (38) being arranged on the telescopic rod of the welding control electric cylinder (37), two docking control electric cylinders (39) being arranged on the welding mounting plate (38), an outer ring (40) being arranged on the telescopic rod of the docking control electric cylinder (39), an inner ring (43) being rotatably mounted on the inner side of the outer ring (40), and a welding arm (44) for welding processing being arranged on the inner side of the inner ring (43); a control motor (41) being arranged on the outer side of the outer ring (40), a control gear (42) being arranged on the output shaft of the control motor (41), and the control gear (42) and the inner ring (43) forming a gear pair.

2. The polygonal stainless steel frame welding equipment according to claim 1, characterized in that: The transport mechanism comprises a transmission belt (6) arranged on a base (1), the transmission belt (6) being provided with a mounting portion (601) for positioning and mounting a workpiece; a correction mechanism is also provided on the base (1) for correcting the position of the workpiece; the correction mechanism comprises a second motor (7) and a second screw rod (8) arranged on the base (1), the second motor (7) being used to drive the second screw rod (8), a second slide seat (9) being slidably mounted on the base (1), a positioning electric cylinder (10) being provided on the second slide seat (9), a positioning plate (11) being provided on a telescopic rod of the positioning electric cylinder (10), and the second slide seat (9) and the second screw rod (8) forming a spiral pair.

3. The polygonal stainless steel frame welding equipment according to claim 1, characterized in that: The positioning mechanism comprises a motor 1 (4) arranged on a mounting column (2), a gear 1 (5) being arranged on an output shaft of the motor 1 (4), and the gear 1 (5) and the rotating disk (3) forming a gear pair.

4. The polygonal stainless steel frame welding equipment according to claim 1, characterized in that: The clamping mechanism comprises a guide column (16) arranged at the end of the mounting bracket (301), a control slide seat (21) being slidably matched on the guide column (16), a spring 1 (17) being connected between the control slide seat (21) and the mounting bracket (301); a control push wheel (22) being arranged on the control slide seat (21), an inclined surface being arranged on the fixing plate (15), the control push wheel (22) being in contact with the inclined surface to push the fixing plate (15), and a spring 2 (18) for providing elastic force being connected between the two fixing plates (15).

5. The polygonal stainless steel frame welding equipment according to claim 4, characterized in that: The control slide (21) is provided with a snap-fit ​​frame (26), a snap-fit ​​seat (23) is telescopically provided at the bottom of the mounting bracket (301), a spring (24) for providing elastic force is connected between the snap-fit ​​seat (23) and the mounting bracket (301), and an adsorption portion (25) is provided at one end of the snap-fit ​​seat (23), the snap-fit ​​frame (26) is snap-fitted with the snap-fit ​​seat (23) to fix the control slide (21); a pushing portion (27) is provided at the bottom of the control slide (21), the pushing portion (27) is pushed by a control mechanism one, and the adsorption portion (25) is adsorbed and controlled by a control mechanism two.

6. The polygonal stainless steel frame welding equipment according to claim 5, characterized in that: The control mechanism comprises a support plate (12) arranged on the mounting column (2), a control push electric cylinder (13) being arranged on the support plate (12), a push wheel (14) being arranged on the telescopic rod of the control push electric cylinder (13), and the push wheel (14) being in contact with the push portion (27) to push the control slide seat (21).

7. The polygonal stainless steel frame welding equipment according to claim 5, characterized in that: The second control mechanism comprises a second support plate (19) arranged on the mounting column (2), and an adsorption electromagnet (20) is arranged on the second support plate (19). The adsorption electromagnet (20) moves the buckle seat (23) through an adsorption adsorption portion (25).

8. The polygonal stainless steel frame welding equipment according to claim 1, characterized in that: The transfer mechanism comprises a support plate three (28) arranged on the mounting column (2), a motor three (29) and a screw rod three (35) being arranged on the support plate three (28), and the screw rod three (35) being driven by the motor three (29); a slide seat three (30) being slidably mounted on the support plate three (28), and the slide seat three (30) and the screw rod three (35) forming a spiral pair; a position electric cylinder (31) is arranged on both sides of the slide seat three (30), and a telescopic rod of the position electric cylinder (31) is connected to a transfer mounting frame (32), and a clamping electric cylinder (33) is arranged on the transfer mounting frame (32), and the clamping electric cylinder (33) is used to control the movement of the clamping plate (34).

9. The polygonal stainless steel frame welding equipment according to claim 1, characterized in that: The detection mechanism comprises a support plate five (45) arranged on the mounting column (2), a torsion motor (46) being arranged on the support plate five (45), a limit oil cylinder (47) being arranged on the output shaft of the torsion motor (46), a mounting platform (48) being arranged on the telescopic rod of the limit oil cylinder (47), a limit clamping electric cylinder (49) being arranged on the mounting platform (48), a limit shaft (50) being arranged on the telescopic rod of the limit clamping electric cylinder (49), the limit shaft (50) clamping the workpiece and applying pressure by rotating to detect the welding quality of the workpiece.

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