Polygonal stainless steel frame welding equipment

Abstract

The invention discloses polygonal stainless steel frame welding equipment, and relates to the technical field of stainless steel frame welding. Comprising a base, a conveying mechanism is arranged on one side of the base, a mounting column is arranged on the base, a positioning mechanism is rotationally mounted on the mounting column, the positioning mechanism comprises a rotating disc rotationally mounted on the mounting column, mounting supports are arranged on the rotating disc in an array mode, and clamping mechanisms are arranged on the mounting supports; a first control mechanism and a second control mechanism are arranged on the rotary disc and located below the positioning mechanism and used for controlling the workpiece clamping state of the clamping mechanism. A transferring mechanism is arranged in the top area of the mounting column and used for transferring workpieces, and a welding mechanism is arranged in the top area of the mounting column; and a detection mechanism is further arranged in the top area of the mounting column and used for conducting quality detection on the welded workpieces, butt joint operation of multiple rod pieces can be achieved, welding operation is completed, and therefore the working efficiency is improved, and tedious intermediate operation is omitted.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel frame welding, in particular to a polygonal stainless steel frame welding device. 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. In short, stainless steel frames have become an important part of many industries due to their durability, strength and corrosion resistance, helping to improve work efficiency and space utilization. Existing stainless steel frames can be built and combined according to structural requirements. Welding is a common connection method. Polygonal stainless steel frames are common structures and are widely used. They are generally used in the base of the box or the base of the frame product. Such polygonal steel frames are generally connected and fixed by welding, that is, multiple rods are butt-jointed end to end for welding operations. However, the butt-jointing operation requires manual operation, and the number of rods is large, which makes the butt-jointing process cumbersome and inconvenient to improve welding efficiency. Based on this, the present invention proposes a welding device that can realize the butt-jointing operation of multiple rods and complete the welding operation, thereby improving work efficiency and eliminating cumbersome intermediate operations. Summary of the invention

[0003] In view of the above technical problems, the present invention can realize the docking operation of multiple rods and complete the welding operation, thereby improving work efficiency and eliminating tedious intermediate operations.

[0004] The scheme used by the present invention is: a polygonal stainless steel frame welding device, including a base, a transport 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, and a clamping mechanism is arranged on the mounting bracket, and the clamping mechanism includes two fixed plates slidably mounted on the mounting bracket; a control mechanism 1 and a control mechanism 2 are arranged on the turntable and below the positioning mechanism, and are used to control the clamping state of the clamping mechanism on the workpiece; a turntable is arranged on the top area of ​​the mounting column. A transfer mechanism is used to transfer the workpiece, and the transfer mechanism includes a slide seat three slidably installed on the top of the installation column, and a transfer installation frame is set on the slide seat three for lifting and sliding, and a clamping plate for clamping the workpiece is set on the transfer installation frame; a welding mechanism is set in the top area of ​​the installation column for welding the workpiece that has been butted; the workpiece has a polygonal closed structure and is butted end to end, and the welding mechanism performs multi-angle welding at the butt joint of the workpiece; a detection mechanism is also set in the top area of ​​the installation column for quality inspection of the welded workpiece, and the detection mechanism clamps the workpieces on both sides of the welding point and applies pressure.

[0005] Preferably, the transport mechanism includes a transmission belt arranged on the base, and a mounting portion is provided on the transmission belt for positioning and mounting the workpiece; a correction mechanism is also provided on the base for correcting the position of the workpiece; the correction mechanism includes a second motor and a second screw rod arranged on the base, the second motor is used to drive the second screw rod, a second slide is slidably installed on the base, a positioning electric cylinder is provided on the second slide, a positioning plate is provided on the telescopic rod of the positioning electric cylinder, and the second slide and the second screw rod form a spiral pair.

[0006] Preferably, the positioning mechanism comprises a motor 1 arranged on the mounting column, a gear 1 is arranged on the output shaft of the motor 1, and the gear 1 and the turntable form a gear pair.

[0007] Preferably, the clamping mechanism includes a guide column arranged at the end of the mounting bracket, a control slide is slidably fitted on the guide column, and a spring 1 is connected between the control slide and the mounting bracket; a control push wheel is arranged on the control slide, an inclined surface is arranged on the fixed plate, the control push wheel contacts the inclined surface to push the fixed plate, and a spring 2 for providing elastic force is connected between the two fixed plates.

[0008] Preferably, a snap-fit ​​frame is provided on the control slide, a snap seat is telescopically provided at the bottom of the mounting bracket, a spring three for providing elastic force is connected between the snap seat and the mounting bracket, and an adsorption portion is provided at one end of the snap seat, the snap-fit ​​frame is snapped with the snap seat to fix the control slide; a pushing portion is provided at the bottom of the control slide, the pushing portion is pushed by control mechanism one, and the adsorption portion is adsorption-controlled by control mechanism two.

[0009] Preferably, the control mechanism 1 comprises a support plate 1 arranged on the mounting column, a control push electric cylinder is arranged on the support plate 1, a push wheel is arranged on the telescopic rod of the control push electric cylinder, and the push wheel contacts the push part to push the control slide.

[0010] Preferably, the second control mechanism comprises a second support plate arranged on the mounting column, and an adsorption electromagnet is arranged on the second support plate, and the adsorption electromagnet moves the buckle seat through the adsorption part.

[0011] Preferably, the transfer mechanism includes a support plate three arranged on the mounting column, a motor three and a screw rod three are arranged on the support plate three, and the screw rod three is driven by the motor three; a slide seat three is slidably mounted on the support plate three, and the slide seat three and the screw rod three form a spiral pair; a positioning electric cylinder is arranged on both sides of the slide seat three, and the telescopic rod of the positioning electric cylinder is connected to the transfer mounting frame, and a clamping electric cylinder is arranged on the transfer mounting frame, and the clamping electric cylinder is used to control the movement of the clamping plate.

[0012] Preferably, the welding mechanism includes a support plate four arranged on the mounting column, a welding control electric cylinder is arranged on the support plate four, a welding mounting plate is arranged on the telescopic rod of the welding control electric cylinder, two docking control electric cylinders are arranged on the welding mounting plate, an outer ring is arranged on the telescopic rod of the docking control electric cylinder, an inner ring is rotatably mounted on the inner side of the outer ring, and a welding arm for welding processing 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, and the control gear and the inner ring constitute a gear pair.

[0013] Preferably, the detection mechanism includes a support plate five arranged on the mounting column, a torsion motor is arranged on the support plate five, a limit cylinder is arranged on the output shaft of the torsion motor, a mounting platform is arranged on the telescopic rod of the limit cylinder, a limit clamping electric cylinder is arranged on the mounting platform, a limit shaft is arranged on the telescopic rod of the limit clamping electric cylinder, the limit shaft clamps the workpiece and applies pressure by rotating to detect the welding quality of the workpiece.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) the workpiece is placed on a transmission belt for transportation, and the workpiece is transferred by a transfer mechanism, that is, it is transferred to a mounting bracket, and the ends of the workpiece are pushed by a positioning plate to correct the positions of the two ends of the workpiece and complete the end-to-end docking; (2) the push wheel is controlled to push the inclined surface of the lower end of the fixed plate so that the two fixed plates are close to each other to fix the workpiece, achieve stable docking, and facilitate subsequent welding; (3) the workpiece is fixed by controlling the limit axis through a limit clamping electric cylinder, and the fixed area is located on both sides of the welding area, and then the limit cylinder is driven to rotate by a torsion motor to twist and press the workpiece, so as to detect the welding quality, that is, whether the weld is cracked when a preset load is applied. 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 structure of the transport mechanism of the present invention.

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

[0019] Figure 5 It is a schematic diagram of the structures of the clamping mechanism and the 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 It is a schematic diagram of the local structure of the transfer mechanism of the present invention.

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

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

[0025] Fig.11 It is a schematic diagram of the local structure of the welding mechanism of the present invention.

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

[0027] Figure numerals: 1-base; 2-mounting column; 3-turntable; 301-mounting bracket; 4-motor 1; 5-gear 1; 6-transmission belt; 601-mounting part; 7-motor 2; 8-screw rod 2; 9-slide 2; 10-positioning electric cylinder; 11-positioning plate; 12-support plate 1; 13-control push electric cylinder; 14-push wheel; 15-fixed plate; 16-guide column; 17-spring 1; 18-spring 2; 19-support plate 2; 20-adsorption electromagnet; 21-control slide; 22-control push wheel; 23-buckle seat; 24-spring 3; 25-adsorption part; 26- snap-fit ​​frame; 27- pushing part; 28- support plate three; 29- motor three; 30- slide seat three; 31- position cylinder; 32- transfer mounting frame; 33- clamping cylinder; 34- clamping plate; 35- screw rod three; 36- support plate four; 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- support plate five; 46- torsion motor; 47- limit cylinder; 48- mounting table; 49- limit clamping cylinder; 50- limit shaft. DETAILED DESCRIPTION

[0028] Example: Figures 1 to 12 As shown, a transport mechanism is provided on one side of the base 1, and a mounting column 2 is provided on the base 1, the transport 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 the workpiece; a correction mechanism is also provided on the base 1 for correcting the position of the workpiece; the correction mechanism includes a motor 2 7 and a screw 2 8 provided on the base 1, the motor 2 7 is used to drive the screw 2 8, a slide 2 9 is slidably installed on the base 1, a positioning electric cylinder 10 is provided on the slide 2 9, a positioning plate 11 is provided on the telescopic rod of the positioning electric cylinder 10, and the slide 2 9 and the screw 2 8 form a spiral pair.

[0029] A positioning mechanism is rotatably mounted on the mounting column 2, and the positioning mechanism includes a turntable 3 rotatably mounted on the mounting column 2, and mounting brackets 301 are arranged in an array on the turntable 3. A clamping mechanism is provided on the mounting bracket 301, and the clamping mechanism includes 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 includes a sliding mounting A transfer mounting frame 32 is provided on the slide seat 30 at the top of the mounting column 2 for lifting and sliding, and a clamping plate 34 for clamping the 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 polygonal closed structures, 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 quality inspection of the welded workpieces, and the detection mechanism clamps the workpieces on both sides of the welding joint and applies pressure.

[0030] The positioning mechanism includes a motor 4 arranged on the mounting column 2, a gear 5 is arranged on the output shaft of the motor 4, and the gear 5 and the turntable 3 form a gear pair; the clamping mechanism includes a guide column 16 arranged at the end of the mounting bracket 301, a control slide 21 is slidably matched on the guide column 16, and a spring 17 is connected between the control slide 21 and the mounting bracket 301; a control push wheel 22 is arranged on the control slide 21, and an inclined surface is arranged on the fixed plate 15. The control push wheel 22 contacts the inclined surface to push the fixed plate 15, and the two fixed plates 15 A spring 2 18 for providing elastic force is connected therebetween; a snap-fit ​​frame 26 is arranged on the control slide 21, a snap seat 23 is telescopically arranged at the bottom of the mounting bracket 301, a spring 3 24 for providing elastic force is connected between the snap seat 23 and the mounting bracket 301, and an adsorption portion 25 is arranged at one end of the snap seat 23, the snap-fit ​​frame 26 is snapped with the snap seat 23 to fix the control slide 21; a pushing portion 27 is arranged at the bottom of the control slide 21, the pushing portion 27 is pushed by the control mechanism 1, and the adsorption portion 25 is adsorbed and controlled by the control mechanism 2.

[0031] The control mechanism 1 includes a support plate 12 arranged on the mounting column 2, and a control push electric cylinder 13 is arranged on the support plate 12. A push wheel 14 is arranged on the telescopic rod of the control push electric cylinder 13. The push wheel 14 contacts with the pushing part 27 to push the control slide 21; the control mechanism 2 includes a support plate 19 arranged on the mounting column 2, and an adsorption electromagnet 20 is arranged on the support plate 19. The adsorption electromagnet 20 moves the buckle seat 23 through the adsorption part 25.

[0032] The transfer mechanism includes a support plate three 28 arranged on the mounting column 2, on which a motor three 29 and a screw rod three 35 are arranged, and the screw rod three 35 is driven by the motor three 29; a slide seat three 30 is slidably installed on the support plate three 28, and the slide seat three 30 and the screw rod three 35 form a spiral pair; a position electric cylinder 31 is arranged on both sides of the slide seat three 30, and the telescopic rod of the position electric cylinder 31 is connected to the 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.

[0033] The welding mechanism includes a support plate 43 arranged on the mounting column 2, a welding control electric cylinder 37 is arranged on the support plate 43, a welding mounting plate 38 is arranged on the telescopic rod of the welding control electric cylinder 37, two docking control electric cylinders 39 are arranged on the welding mounting plate 38, an outer ring 40 is arranged on the telescopic rod of the docking control electric cylinder 39, an inner ring 43 is rotatably mounted on the inner side of the outer ring 40, and 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 constitute a gear pair.

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

[0035] The working principle is as follows: Figures 1 to 12 As shown, the workpiece is placed on the transmission belt 6 for transportation, and the workpiece is transferred by the transfer mechanism, that is, it is transferred to the mounting bracket 301. Specifically, the motor 3 29 works, the screw rod 3 35 rotates, the slide 30 slides, the transfer mounting bracket 32 ​​moves, the height is adjusted by the position electric cylinder 31, the clamping electric 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 fixed plates 15. The position of the positioning plate 11 is controlled by the positioning electric cylinder 10 to be located at both ends of the workpiece. The motor 2 7 works, the screw rod 2 8 rotates, the slide 2 9 slides, and the end of the workpiece is pushed by the positioning plate 11 to correct the position of the two ends of the workpiece to facilitate subsequent docking.

[0036] In the position where the transport mechanism is located, the push wheel 22 is controlled to move by controlling the push electric cylinder 13, and the push wheel 14 pushes the push part 27 to make the control slide 21 slide, and the snap-fit ​​frame 26 moves and snaps with the snap seat 23 to fix the control slide 21. When the control slide 21 moves, the control push wheel 22 pushes the inclined surface at the lower end of the fixed plate 15 to make the two fixed plates 15 approach each other to fix the workpiece.

[0037] The motor 4 is operated to rotate the turntable 3, that is, the orientation of the turntable 3 is changed one by one, so that the workpieces are transferred to the mounting bracket 301 one by one for docking, and finally a polygonal closed structure is formed; during welding, the welding mounting plate 38 is controlled to move by the welding control electric cylinder 37 so that the workpiece is located on the inner side of the inner ring 43, and 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, and the inner ring 43 is rotated by controlling the motor 41, that is, it rotates around the docking area of ​​the workpiece, and the welding operation is performed by the welding arm 44.

[0038] After welding is completed, the adsorption part 25 can be controlled by the adsorption electromagnet 20 to make the buckle seat 23 slide, even if the buckle seat 23 is disengaged from the buckle frame 26, the slide seat 21 is controlled to move, and the fixed plate 15 releases the fixation of the workpiece; at this time, the workpieces are connected to each other into a polygonal structure, and the height of the mounting table 48 is controlled by the limit cylinder 47 so that the limit axis 50 is located outside the workpiece, and the limit axis 50 is controlled by the limit clamping electric cylinder 49 to fix the workpiece, and the fixed area is located on both sides of the welding area, and then the limit cylinder 47 is driven to rotate by the torsion motor 46 to twist and press the workpiece, so as to detect the welding quality, that is, whether the weld is cracked when a preset load is applied.

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 workpieces that have been welded, and the detection mechanism clamps the workpieces on both sides of the welding joint and applies pressure.

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 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.

10. 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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