Positioning clamp for duplex stainless steel welding

Abstract

The invention relates to the technical field of positioning clamps, and discloses a duplex stainless steel welding positioning clamp which comprises a welding table, the inner wall of the welding table is rotatably connected with a one-way threaded rod, the circumferential surface of the one-way threaded rod is in threaded connection with a sliding block, and the top of the sliding block is fixedly connected with a moving frame. The device comprises a movable frame, the inner wall of the movable frame is rotatably connected with a bidirectional threaded rod, the circumferential surface of the bidirectional threaded rod is in threaded connection with a movable block, and the front side of the movable block is fixedly connected with a fixed clamping plate. And then the one-way threaded rod drives the welding part to adjust the position, displacement caused by welding thermal deformation, external force collision or misoperation is prevented, the position precision of a welding seam is ensured, the stability of the welding part during welding is further improved, and the quality of the welding part is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning jigs, and particularly to a positioning jig for welding duplex stainless steel. Background Art

[0002] When processing duplex stainless steel, welding is an extremely important link. During the welding process, accurate positioning and stable clamping play a decisive role in ensuring the welding quality.

[0003] The patent with the publication number CN217096392U relates to a welding positioning jig, belonging to the technical field of welding auxiliary tools; this patent is provided with a bottom plate; two brackets, which are fixedly connected to the bottom plate at intervals and support a circular tube through rolling elements; a fixed seat, which is arranged at one end of the bottom plate and rotatably connected with a handle capable of driving a positioning member for hanging a hanging head to rotate; and a gantry pressing arm, which is installed on the bottom plate and located at an intermediate position between the two brackets; wherein, the gantry pressing arm surrounds the outside of the circular tube, the gantry pressing arm is provided with a pressing rod capable of displacing towards the circular tube and pressing the circular tube from above the circular tube, and a rolling element for contacting the circular tube is installed at the end of the pressing rod. This patent has the beneficial effects of simple structure, convenient use, being able to effectively ensure the welding quality and improve the qualified rate of finished products. However, when this device positions and clamps a welding part during welding, it is easy to cause the bent pipe to shift, and it is difficult to ensure the stability of the welding part during welding. Therefore, a positioning jig for welding duplex stainless steel is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a positioning jig for welding duplex stainless steel in view of the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a positioning fixture for welding duplex stainless steel, including a welding table. The inner wall of the welding table is rotatably connected with a unidirectional threaded rod. The circumferential surface of the unidirectional threaded rod is threadedly connected with a sliding block. The top of the sliding block is fixedly connected with a moving frame. The inner wall of the moving frame is rotatably connected with a bidirectional threaded rod. The circumferential surface of the bidirectional threaded rod is threadedly connected with a moving block. The front side of the moving block is fixedly connected with a fixed clamping plate. The inner wall of the moving frame is provided with an anti-loosening mechanism for preventing the welded part from loosening. The top of the moving frame is provided with a positioning mechanism for assisting in positioning the welded part. During welding, first, the fixed clamping plate is driven by the bidirectional threaded rod to fix the welded part, and then the welded part is driven by the unidirectional threaded rod to adjust the position, preventing displacement caused by welding thermal deformation, external force collision or operation error, ensuring the position accuracy of the weld, thereby further improving the stability of the welded part during welding and further enhancing the quality of the welded part; The top of the welding table is fixedly connected with a connecting frame. The inner wall of the connecting frame is rotatably connected with a rotating rod. The circumferential surface of the rotating rod is fixedly connected with a rotating plate. The inner wall of the rotating plate is slidably connected with a sliding column. The top of the sliding column is fixedly connected with a pressing plate. The bottom of the sliding column is fixedly connected with a limiting plate. During adjustment, if the welded part has a certain bending arc, the pressing plate is elastically supported on the welded part by rotating the rotating plate, preventing delayed cracks caused by excessive stress, further improving the fixed positioning effect of the equipment on different pipes, making the overall quality of the welded part better, and reducing the deformation of the welded part during welding; The sliding block is slidably connected with the inner wall of the welding table. The bottom of the moving frame is in contact with the top of the welding table, and the moving frame is used to adjust the welded part. The moving block is slidably connected with the inner wall of the moving frame. The rear side of the fixed clamping plate is in contact with the front side of the moving frame, and the fixed clamping plate is used to clamp welded parts of different sizes; The limiting plate is fixedly connected with the inner wall of the rotating plate through a tension spring. The pressing plate is used to support welded parts with different bends. The rotating plate is in contact with the inner wall of the connecting frame.

[0006] Preferably, the anti-loosening mechanism includes a fixing plate, the inner wall of the fixing plate is slidably connected with a moving column, one side of the moving column close to the rotating rod is fixedly connected with a clamping plate, one end of the moving column far away from the clamping plate is fixedly connected with an arc plate, and both ends of the rotating rod are fixedly connected with clamping discs. When fixing and positioning a bent welded part, the rotating rod drives the clamping discs to rotate, and the clamping discs cooperate with the clamping plate to limit the rotating rod, avoiding the rebound of the rotating plate due to excessive extrusion stress when supporting and positioning the welded part, making the positioning of the rotating plate more accurate, making the welded part more stable during welding, and further improving the overall quality of the welded part during welding; the inner wall of the moving frame is slidably connected with a lifting plate, the top of the lifting plate is fixedly connected with a first elastic telescopic rod, the elastic end of the first elastic telescopic rod is fixedly connected with a support plate, and pulleys are installed on both sides of the lifting plate. The top of the welding table is fixedly connected with a Z-shaped plate. When adjusting the welded part, the moving frame moves to drive the support plate to move upward, thereby elastically supporting and positioning the welded part, further reducing the risk of cracks caused by stress concentration, avoiding the deviation of the clamped position due to the shaking of the welded part during adjustment, making the clamping more stable, improving the welding speed, reducing the risk for the staff to correct the welded part, and improving the safety of welding; the fixing plate is fixedly connected to both sides of the connecting frame, the arc plate contacts both sides of the connecting frame, the clamping plate contacts both sides of the connecting frame, a clamping groove is formed in the inner wall of the clamping disc, the clamping plate contacts the clamping groove in the inner wall of the clamping disc, the clamping plate is fixedly connected to one side of the fixing plate close to the clamping disc through a spring, a Z-shaped sliding groove is formed in the inner wall of the Z-shaped plate, the pulley contacts the sliding groove in the inner wall of the Z-shaped plate, and the movement track of the pulley is consistent with the Z-shaped sliding groove of the Z-shaped plate.

[0007] Preferably, the positioning mechanism includes a positioning block. A brush barrel is rotatably connected to the inner wall of the positioning block. Both ends of the brush barrel are fixedly connected with rollers. After welding, the lifting plate drives the brush barrel to roll and clean the tabletop of the welding table, avoiding welding slag remaining on the top of the welding table and causing equipment damage during the next welding, improving the comfort of the welding environment, enabling a faster welding speed during welding, and further improving the overall quality of the welded parts. A rotating plate is rotatably connected to the top of the lifting plate through a torsion spring. A second elastic telescopic rod is fixedly connected to the side of the rotating plate close to the support plate. The elastic telescopic end of the second elastic telescopic rod is fixedly connected with a clamping plate. A trapezoidal block is fixedly connected to the side of the rotating plate close to the clamping plate. A limiting block is fixedly connected to the top of the lifting plate. While supporting and positioning the welded part, the support plate drives the clamping plate to rotate to position the welded part, making the welding stability of the equipment better, also avoiding position deviation or assembly error caused by manual placement, reducing the welding deviation, and making the welding accuracy more accurate. The positioning block is fixedly connected to the bottom of the lifting plate. The circumferential surface of the roller contacts the top of the welding table, and a rubber ring is sleeved on the circumferential surface of the roller to increase the friction force. The circumferential surface of the brush barrel contacts the top of the welding table, and the brush barrel is used to clean the tabletop of the welding table. The top inclined surface of the trapezoidal block contacts the bottom inclined surface of the support plate.

[0008] The present invention adopts the above technical solutions and can bring the following beneficial effects: 1. For this positioning fixture for duplex stainless steel welding, through the coordinated operation among the welding table, sliding block, threaded rod, moving frame, bidirectional threaded rod, moving block, fixed clamping plate, connecting frame, rotating rod, rotating plate, pressing plate, sliding column, and limiting plate, during welding, first, the bidirectional threaded rod drives the fixed clamping plate to fix the welded part, and then the unidirectional threaded rod drives the welded part to adjust its position, preventing displacement caused by welding thermal deformation, external force collision, or operation error, ensuring the position accuracy of the weld seam, thereby further improving the stability of the welded part during welding and further enhancing the quality of the welded part. During adjustment, if the welded part has a certain bending curvature, by rotating the rotating plate, the pressing plate elastically supports the welded part, preventing delayed cracks caused by excessive stress, further improving the fixed positioning effect of the equipment on different pipes, making the overall quality of the welded part better, and reducing the deformation of the welded part during welding.

[0009] 2. For this positioning fixture for duplex stainless steel welding, through the coordinated operation among the chuck, fixed plate, arc plate, moving column, and clamping plate, when fixing and positioning a bent welded part, the rotating rod drives the chuck to rotate, and the chuck cooperates with the clamping plate to limit the rotating rod, avoiding the rebound of the rotating plate due to excessive extrusion stress during the support and positioning of the welded part, making the positioning of the rotating plate more accurate, making the welded part more stable during welding, and further improving the overall quality of the welded part during welding.

[0010] 3. The positioning fixture for welding duplex stainless steel, through the coordinated operation among the lifting plate, pulley, Z-shaped plate, first elastic telescopic rod, and support plate, when adjusting the welded part, the moving frame moves to drive the support plate to move upward, thereby elastically supporting and positioning the welded part, further reducing the risk of cracks caused by stress concentration, avoiding the offset of clamping due to the shaking of the welded part during adjustment, making the clamping more stable, improving the welding speed, reducing the risk for the staff during the correction of the welded part, and enhancing the welding safety.

[0011] 4. The positioning fixture for welding duplex stainless steel, through the coordinated operation among the positioning block, brush barrel, and roller, after the welding is completed, the lifting plate drives the brush barrel to roll and clean the tabletop of the welding table, avoiding the residue of welding slag on the top of the welding table, which may cause equipment damage during the next welding, improving the comfort of the welding environment, enabling a faster welding speed during welding, and further improving the overall quality of the welded part.

[0012] 5. The positioning fixture for welding duplex stainless steel, through the coordinated operation among the limiting block, second elastic telescopic rod, and clamping plate, while supporting and positioning the welded part, the support plate drives the clamping plate to rotate to position the welded part, making the welding stability of the equipment better, also avoiding the position offset or assembly error caused by manual placement, reducing the welding deviation, and making the welding accuracy more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the schematic diagram of the overall structure of the present invention; Figure 2 is the schematic diagram of the fixed clamping plate structure of the present invention; Figure 3 is the schematic diagram of the clamping plate structure of the present invention; Figure 4 is the present invention Figure 3 the enlarged view of the structure at A in; Figure 5 is the schematic diagram of the support plate structure of the present invention; Figure 6 is the schematic diagram of the clamping plate structure of the present invention; Figure 7 is the present invention Figure 6 the enlarged view of the structure at B in.

[0014] In the figure: 1, welding table; 2, sliding block; 3, unidirectional threaded rod; 4, moving frame; 5, bidirectional threaded rod; 6, moving block; 7, fixed clamping plate; 8, anti-loosening mechanism; 81, chuck; 82, fixed plate; 83, arc plate; 84, moving column; 85, clamping plate; 86, lifting plate; 87, pulley; 88, Z-shaped plate; 89, first elastic telescopic rod; 810, support plate; 9, positioning mechanism; 91, positioning block; 92, brush barrel; 93, roller; 94, rotating plate; 95, limiting block; 96, second elastic telescopic rod; 97, clamping plate; 98, trapezoidal block; 10, connecting frame; 11, rotating rod; 12, rotating plate; 13, pressing plate; 14, sliding column; 15, limiting plate. Detailed implementation manner

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figures 1-7 , an embodiment of the present invention is a positioning fixture for duplex stainless steel welding, including a welding table 1. The inner wall of the welding table 1 is rotatably connected with a unidirectional threaded rod 3. The circumferential surface of the unidirectional threaded rod 3 is threadedly connected with a sliding block 2. The top of the sliding block 2 is fixedly connected with a moving frame 4. The inner wall of the moving frame 4 is rotatably connected with a bidirectional threaded rod 5. The circumferential surface of the bidirectional threaded rod 5 is threadedly connected with a moving block 6. The front side of the moving block 6 is fixedly connected with a fixed clamping plate 7. An anti-loosening mechanism 8 for preventing the welded part from loosening is arranged on the inner wall of the moving frame 4. A positioning mechanism 9 for assisting in positioning the welded part is arranged on the top of the moving frame 4; When welding a welded part, the welded part can be first placed on the moving frame 4 by the staff. At this time, the staff can manually shake or use a motor to drive the bidirectional threaded rod 5 to rotate. The rotation of the bidirectional threaded rod 5 drives the moving block 6 to move closer to the middle through the bidirectional thread groove on the circumferential surface. The moving block 6 drives the fixed clamping plate 7 to move closer to the middle, so that the fixed clamping plate 7 can fix the pressing plate 13. After the welded part is fixed, the staff can start the motor to work. The work of the motor will drive the unidirectional threaded rod 3 to rotate through the output end. The rotation of the unidirectional threaded rod 3 will drive the moving frame 4 to adjust its position through the unidirectional thread groove on the circumferential surface. The moving frame 4 will drive the welded part to adjust its position. After adjustment, the welding device can be started to weld the welded part, preventing displacement caused by welding thermal deformation, external force collision or operation error, ensuring the position accuracy of the weld, and further improving the stability of the welded part during welding, so that the quality of the welded part is further improved; A connecting frame 10 is fixedly connected to the top of the soldering table 1. A rotating rod 11 is rotatably connected to the inner wall of the connecting frame 10. A rotating plate 12 is fixedly connected to the circumferential surface of the rotating rod 11. A sliding column 14 is slidably connected to the inner wall of the rotating plate 12. A pressing plate 13 is fixedly connected to the top of the sliding column 14. A limiting plate 15 is fixedly connected to the bottom of the sliding column 14; the sliding block 2 is slidably connected to the inner wall of the soldering table 1. The bottom of the moving frame 4 contacts the top of the soldering table 1, and the moving frame 4 is used to adjust the welding piece. The moving block 6 is slidably connected to the inner wall of the moving frame 4. The rear side of the fixed clamping plate 7 contacts the front side of the moving frame 4, and the fixed clamping plate 7 is used to clamp welding pieces of different sizes; the limiting plate 15 is fixedly connected to the inner wall of the rotating plate 12 through a tension spring. The pressing plate 13 is used to support welding pieces with different curvatures. The rotating plate 12 contacts the inner wall of the connecting frame 10; When adjusting the welding piece, if the welding piece has a certain bending arc, the operator can manually rotate the rotating plate 12. The rotation of the rotating plate 12 will rotate the sliding column 14, and the sliding column 14 will drive the pressing plate 13 to rotate, so that the pressing plate 13 supports the bent end of the welding piece. While supporting and positioning, the pressing plate 13 will be pushed by the welding piece to move. The pressing plate 13 drives the sliding column 14 to move, and the sliding column 14 drives the limiting plate 15 to move. The limiting plate 15 will perform elastic buffering through the tension spring, so that the pressing plate 13 elastically supports the welding piece. The limiting plate 15 limits the sliding column 14 to prevent deviation during support and also prevent delayed cracks caused by excessive stress, further improving the fixing and positioning effect of the equipment on different pipes, making the overall quality of the welding piece better, and reducing the deformation of the welding piece during welding.

[0017] Working principle: During welding, first drive the fixed clamping plate 7 to fix the welding piece through the bidirectional threaded rod 5, and then drive the welding piece to adjust its position through the unidirectional threaded rod 3 to prevent displacement caused by welding thermal deformation, external force collision or operation error, improving the stability of the welding piece during welding; during adjustment, if the welding piece has a certain bending arc, rotate the rotating plate 12 to make the pressing plate 13 elastically support the welding piece, preventing delayed cracks caused by excessive stress, and further improving the fixing and positioning effect of the equipment on different pipes.

[0018] Please refer to Figures 1-7 On the basis of the above embodiment, in another embodiment of the present invention, the anti-loosening mechanism 8 includes a fixing plate 82. A moving column 84 is slidably connected to the inner wall of the fixing plate 82. A clamping plate 85 is fixedly connected to the side of the moving column 84 close to the rotating rod 11. An arc plate 83 is fixedly connected to the end of the moving column 84 away from the clamping plate 85. Chucks 81 are fixedly connected to both ends of the rotating rod 11; When fixing and positioning a bent welded part, rotating the rotating plate 12 will drive the rotating rod 11 to rotate. The rotation of the rotating rod 11 will drive the chucks 81 to rotate on both sides. The rotation of the chucks 81 will cause the inclined surfaces of the inner wall slots to contact the inclined surfaces of the clamping plates 85, thereby driving the clamping plates 85 to move. The clamping plates 85 drive the moving columns 84 to move, and the moving columns 84 drive the arc plates 83 to move. Among them, the arc plates 83 will limit the moving columns 84 to prevent deviation when the moving columns 84 move. When the clamping plates 85 move to the next slot, the clamping plates 85 will be reset by the elasticity between the clamping plates 85 and the fixing plates 82, thereby driving the clamping plates 85 into the inner wall slots of the chucks 81, so that the clamping plates 85 limit the rotating rod 11, avoiding the rebound of the rotating plate 12 due to excessive extrusion stress when supporting and positioning the welded part, making the positioning of the rotating plate 12 accurate, making the welded part more stable during welding, and further improving the overall quality of the welded part during welding; A lifting plate 86 is slidably connected to the inner wall of the moving frame 4. A first elastic telescopic rod 89 is fixedly connected to the top of the lifting plate 86. The elastic end of the first elastic telescopic rod 89 is fixedly connected to a support plate 810. Pulleys 87 are installed on both sides of the lifting plate 86. A Z-shaped plate 88 is fixedly connected to the top of the welding table 1; the fixing plate 82 is fixedly connected to both sides of the connecting frame 10. The arc plates 83 are in contact with both sides of the connecting frame 10. The clamping plates 85 are in contact with both sides of the connecting frame 10. Slots are formed in the inner wall of the chuck 81. The clamping plates 85 are in contact with the inner wall slots of the chuck 81. The clamping plates 85 are fixedly connected to the side of the fixing plate 82 close to the chuck 81 through springs. A Z-shaped chute is formed in the inner wall of the Z-shaped plate 88. The pulleys 87 are in contact with the inner wall chute of the Z-shaped plate 88, and the movement track of the pulleys 87 is consistent with the Z-shaped chute of the Z-shaped plate 88; When adjusting the welded part, the movement of the moving frame 4 drives the lifting plate 86 to move. The lifting plate 86 drives the pulley 87 to move. The movement of the pulley 87 contacts the inner wall of the Z-shaped plate 88 through the circumferential surface, thereby driving the pulley 87 to move. The pulley 87 will rise along the Z-shaped groove on the inner wall of the Z-shaped plate 88. The pulley 87 drives the lifting plate 86 to move upward. The lifting plate 86 drives the first elastic telescopic rod 89 to move upward. The upward movement of the first elastic telescopic rod 89 will drive the support plate 810 to move upward through the elastic end, thereby elastically supporting and positioning the welded part, further reducing the risk of cracks caused by stress concentration, avoiding the deviation of the clamped part due to the shaking of the welded part during adjustment, making the clamping more stable, improving the welding speed, reducing the risk for the staff to correct the welded part, and improving the safety of welding.

[0019] Working principle: When fixing and positioning a bent welded part, the chuck 81 is driven to rotate by the rotating rod 11. The chuck 81 cooperates with the clamping plate 85 to limit the rotating rod 11, preventing the rotating plate 12 from rebounding due to excessive extrusion stress during the support and positioning of the welded part, and improving the overall quality of the welded part during welding; When adjusting the welded part, the moving frame 4 moves to drive the support plate 810 to move upward, thereby elastically supporting and positioning the welded part, further reducing the risk of cracks caused by stress concentration, increasing the welding speed, reducing the risk for workers when correcting the welded part, and improving the welding safety.

[0020] The positioning mechanism 9 includes a positioning block 91. The inner wall of the positioning block 91 is rotatably connected with a brush barrel 92. Both ends of the brush barrel 92 are fixedly connected with rollers 93; After welding is completed, the moving frame 4 drives the welded part to reset. The moving frame 4 drives the lifting plate 86 to move. The lifting plate 86 drives the positioning block 91 to move. The positioning block 91 drives the brush barrel 92 to move. The brush barrel 92 drives the rollers 93 to move. The rollers 93 move and contact the top of the welding table 1 through the rubber ring on the circumferential surface, thereby driving the rollers 93 to rotate. The rotation of the rollers 93 drives the brush barrel 92 to rotate, so that the brush barrel 92 rolls and cleans the tabletop of the welding table 1, preventing welding slag from remaining on the top of the welding table 1 and causing equipment damage during the next welding, improving the comfort of the welding environment, enabling a faster welding speed during welding, and further improving the overall quality of the welded part; The top of the lifting plate 86 is rotatably connected with a rotating plate 94 through a torsion spring. One side of the rotating plate 94 close to the support plate 810 is fixedly connected with a second elastic telescopic rod 96. The elastic telescopic end of the second elastic telescopic rod 96 is fixedly connected with a clamping plate 97. One side of the rotating plate 94 close to the clamping plate 97 is fixedly connected with a trapezoidal block 98. The top of the lifting plate 86 is fixedly connected with a limiting block 95; The positioning block 91 is fixedly connected to the bottom of the lifting plate 86. The circumferential surface of the roller 93 contacts the top of the welding table 1, and the circumferential surface of the roller 93 is sleeved with a rubber ring to increase friction. The circumferential surface of the brush barrel 92 contacts the top of the welding table 1, and the brush barrel 92 is used to clean the tabletop of the welding table 1. The top inclined surface of the trapezoidal block 98 contacts the bottom inclined surface of the support plate 810; While supporting and positioning the welded part, the support plate 810 is subjected to a downward extrusion force from the welded part, which drives the support plate 810 to move downward. The support plate 810 moves downward and contacts the top inclined surface of the trapezoidal block 98, thereby driving the trapezoidal block 98 to rotate. The trapezoidal block 98 drives the rotating plate 94 to rotate, the rotating plate 94 drives the second elastic telescopic rod 96 to rotate, and the rotation of the second elastic telescopic rod 96 drives the clamping plate 97 to rotate through the elastic telescopic end. The rotation of the clamping plate 97 will position the welded part. When the support plate 810 is reset, it is reset through the elastic telescopic end of the first elastic telescopic rod 89, and the limit on the trapezoidal block 98 will be released, causing the rotating plate 94 to be reset. Among them, the limit block 95 will limit the rotation of the rotating plate 94 to prevent the rotating plate 94 from rotating excessively, making the welding stability of the equipment better, also avoiding position deviation or assembly error caused by manual placement, reducing the welding deviation, and making the welding accuracy more accurate.

[0021] Working principle: After welding is completed, the lifting plate 86 drives the brush barrel 92 to roll and clean the tabletop of the welding table 1, preventing welding slag from remaining on the top of the welding table 1 and causing equipment damage during the next welding, improving the comfort of the welding environment, enabling a faster welding speed during welding, and further improving the overall quality of the welded part; while supporting and positioning the welded part, the support plate 810 drives the clamping plate 97 to rotate to position the welded part, making the welding stability of the equipment better, also avoiding position deviation or assembly error caused by manual placement, reducing the welding deviation, and making the welding accuracy more accurate.

[0022] The present invention provides a positioning fixture for duplex stainless steel welding. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be implemented using existing technologies.

Claims

1. A positioning fixture for welding duplex stainless steel, comprising a welding table (1), characterized in that: The inner wall of the welding table (1) is rotatably connected with a unidirectional threaded rod (3). The circumferential surface of the unidirectional threaded rod (3) is threadedly connected with a sliding block (2). The top of the sliding block (2) is fixedly connected with a moving frame (4). The inner wall of the moving frame (4) is rotatably connected with a bidirectional threaded rod (5). The circumferential surface of the bidirectional threaded rod (5) is threadedly connected with a moving block (6). The front side of the moving block (6) is fixedly connected with a fixed clamping plate (7). An anti-loosening mechanism (8) for preventing the welded part from loosening is arranged on the inner wall of the moving frame (4). A positioning mechanism (9) for assisting in positioning the welded part is arranged on the top of the moving frame (4). The top of the welding table (1) is fixedly connected with a connecting frame (10). The inner wall of the connecting frame (10) is rotatably connected with a rotating rod (11). The circumferential surface of the rotating rod (11) is fixedly connected with a rotating plate (12). The inner wall of the rotating plate (12) is slidably connected with a sliding column (14). The top of the sliding column (14) is fixedly connected with a pressing plate (13). The bottom of the sliding column (14) is fixedly connected with a limiting plate (15).

2. The positioning fixture for welding duplex stainless steel according to claim 1, characterized in that: The sliding block (2) is slidably connected with the inner wall of the welding table (1). The bottom of the moving frame (4) is in contact with the top of the welding table (1), and the moving frame (4) is used for adjusting the welded part. The moving block (6) is slidably connected with the inner wall of the moving frame (4). The rear side of the fixed clamping plate (7) is in contact with the front side of the moving frame (4), and the fixed clamping plate (7) is used for clamping welded parts of different sizes.

3. A positioning fixture for welding duplex stainless steel according to claim 2, characterized in that: The limiting plate (15) is fixedly connected with the inner wall of the rotating plate (12) through a tension spring. The pressing plate (13) is used for supporting welded parts with different bends. The rotating plate (12) is in contact with the inner wall of the connecting frame (10).

4. A positioning fixture for welding duplex stainless steel according to claim 3, characterized in that: The anti-loosening mechanism (8) includes a fixing plate (82). A moving column (84) is slidably connected with the inner wall of the fixing plate (82). A clamping plate (85) is fixedly connected to the side of the moving column (84) close to the rotating rod (11). An arc plate (83) is fixedly connected to the end of the moving column (84) far from the clamping plate (85). Chucks (81) are fixedly connected to both ends of the rotating rod (11).

5. A positioning fixture for welding duplex stainless steel according to claim 4, characterized in that: A lifting plate (86) is slidably connected with the inner wall of the moving frame (4). A first elastic telescopic rod (89) is fixedly connected to the top of the lifting plate (86). The elastic end of the first elastic telescopic rod (89) is fixedly connected with a support plate (810). Pulleys (87) are installed on both sides of the lifting plate (86). A Z-shaped plate (88) is fixedly connected to the top of the welding table (1).

6. The positioning fixture for welding duplex stainless steel according to claim 5, characterized in that: The fixed plate (82) is fixedly connected to both sides of the connecting frame (10), the arc plate (83) contacts both sides of the connecting frame (10), the clamping plate (85) contacts both sides of the connecting frame (10), a clamping groove is formed in the inner wall of the chuck (81), the clamping plate (85) contacts the clamping groove in the inner wall of the chuck (81), the clamping plate (85) is fixedly connected to one side of the fixed plate (82) close to the chuck (81) through a spring, a Z-shaped chute is formed in the inner wall of the Z-shaped plate (88), the pulley (87) contacts the chute in the inner wall of the Z-shaped plate (88), and the movement track of the pulley (87) is consistent with the Z-shaped chute of the Z-shaped plate (88).

7. A positioning fixture for welding duplex stainless steel according to claim 6, characterized in that: The positioning mechanism (9) includes a positioning block (91), a brush barrel (92) is rotatably connected to the inner wall of the positioning block (91), and rollers (93) are fixedly connected to both ends of the brush barrel (92).

8. A positioning fixture for welding duplex stainless steel according to claim 7, characterized in that: A rotating plate (94) is rotatably connected to the top of the lifting plate (86) through a torsion spring, an elastic telescopic rod II (96) is fixedly connected to one side of the rotating plate (94) close to the support plate (810), a clamping plate (97) is fixedly connected to the elastic telescopic end of the elastic telescopic rod II (96), a trapezoidal block (98) is fixedly connected to one side of the rotating plate (94) close to the clamping plate (97), and a limiting block (95) is fixedly connected to the top of the lifting plate (86).

9. A positioning fixture for welding duplex stainless steel according to claim 8, characterized in that: The positioning block (91) is fixedly connected to the bottom of the lifting plate (86), the circumferential surface of the roller (93) contacts the top of the welding table (1), a rubber ring is sleeved on the circumferential surface of the roller (93) to increase the friction force, the circumferential surface of the brush barrel (92) contacts the top of the welding table (1), and the brush barrel (92) is used for cleaning the tabletop of the welding table (1), and the top inclined surface of the trapezoidal block (98) contacts the bottom inclined surface of the support plate (810).

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