A metal hinge welding positioning fixture

Abstract

This invention relates to the field of positioning fixture technology and discloses a metal hinge welding positioning fixture, including a worktable, a welding arm on the top of the worktable, a welding platform fixedly connected to the top of the worktable, a U-shaped plate fixedly connected to the top of the welding platform, and a motor fixedly connected to the top of the worktable. When welding a hinge, the invention places the hinge in the welding area. After placement, the hinge contacts the pressure plate, thus fixing the hinge and preventing it from shaking or shifting during welding, thereby improving the quality and aesthetics of the weld. Simultaneously, the hinge can be adjusted before fixing by pushing it towards the center on the lifting plate, thus preventing misalignment and improving the welding accuracy.

Description

Technical Field

[0001] This invention relates to the field of positioning fixture technology, specifically to a metal hinge welding positioning fixture. Background Technology

[0002] In modern manufacturing, metal hinges are key components that connect various parts and enable rotation. They are widely used in many fields such as furniture, doors and windows, automobiles, and machinery. Their quality and performance directly affect the user experience, safety, and reliability of related products.

[0003] Patent CN222429779U discloses a novel hinge welding positioning fixture, comprising a copper rod, a brass plate mounted on the copper rod, and a copper plate disposed on the brass plate. The fixture includes a lifting cylinder and a cylindrical rod and cylinder top plate fixed to the lifting cylinder, arranged vertically. In use, the plate to be welded and the hinge positioning holes are placed together on the plane of the copper plate. The lifting cylinder is controlled by a throttle valve to lift the plate from the bottom surface, thus fixing the spatial concentricity of the hinge and the plate. This device can be used with a welding robot or other manual welding machine. After welding of sheet metal, the lifting cylinder returns to the zero position, and the cylindrical bar is released. The material is then manually removed. The lifting cylinder can extend or retract as needed, eliminating the need to change welding fixtures when changing products. This allows for efficient and rapid sheet metal welding operations, suitable for various applications. However, before fixing the hinges, mechanical vibration or incorrect hinge placement by the worker can lead to incorrect hinge and hinge positions after fixing, potentially causing welding errors. Therefore, a metal hinge welding positioning fixture is proposed to address these issues. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a metal hinge welding and positioning fixture to address the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a metal hinge welding positioning fixture, including a worktable, a welding arm provided on the top of the worktable, a welding table fixedly connected to the top of the worktable, a U-shaped plate fixedly connected to the top of the welding table, a motor fixedly connected to the top of the worktable, a lead screw fixedly connected to the output end of the motor, a sliding plate movably connected to the circumferential surface of the lead screw, an inclined plate fixedly connected to the surface of the sliding plate, a sliding rod fixedly connected to the front of the U-shaped plate, a lifting plate slidably connected to the circumferential surface of the sliding rod, an L-shaped plate fixedly connected to the inner wall of the U-shaped plate, a pressure plate fixedly connected to the inner wall of the L-shaped plate, an inclined strip fixedly connected to the left side of the L-shaped plate, a fixing rod fixedly connected to the inner wall of the lifting plate by a spring, a push plate slidably connected to the circumferential surface of the fixing rod, a U-shaped plate fixedly connected to the front of the push plate, an inclined plate fixedly connected to the top of the U-shaped plate, a triangular plate fixedly connected to the bottom of the lifting plate, and the U-shaped plate... The top of the workbench is equipped with a slag removal device for cleaning welding slag. The inner wall of the workbench is equipped with an anti-jamming device to prevent jamming during use. The inner wall of the welding table is rotatably connected to the circumferential surface of the lead screw. The top of the workbench is in contact with the bottom of the inclined plate one. The surface of the lifting plate is in contact with the inner wall of the welding table. The top of the lifting plate is in contact with the bottom of the U-shaped plate two. The bottom of the triangular plate is in contact with the top of the workbench. When welding the hinge, the hinge is placed in the welding area. After placement, the hinge contacts the pressure plate, thus fixing the hinge and preventing it from shaking or shifting during welding, thereby improving the quality and aesthetics of the weld. At the same time, the U-shaped plate two moves backward, causing the push plate one to move backward and stretching the spring. This allows for adjustment of the hinge before fixing it. The hinge placed on the lifting plate is pushed towards the center, thus preventing the hinge from shifting and improving the accuracy of the hinge welding.

[0006] Preferably, the slag removal device includes a fixed block, which is fixedly connected to the top of the lifting plate. A rotating rod is rotatably connected to the inner wall of the fixed block via a torsion spring. A straight plate is fixedly connected to the circumferential surface of the rotating rod. A second rotating rod is fixedly connected to the side of the straight plate away from the fixed block. A slag-pushing plate is fixedly connected to the circumferential surface of the second rotating rod. A U-shaped frame is fixedly connected to the top of the sliding plate. An elastic telescopic plate is fixedly connected to the inner wall of the U-shaped frame. A roller is rotatably connected to the telescopic end of the elastic telescopic plate. A conduction plate is fixedly connected to the bottom of the welding table. A protrusion is fixedly connected to the bottom of the conduction plate. The top of the roller contacts the bottom of the slag-pushing plate, and the circumferential surface of the roller contacts the bottom of the transmission plate. During the welding process, the rotating rod rotates and drives the slag-pushing plate to move, thereby cleaning up the welding slag generated during the welding process and preventing excessive accumulation of welding slag, which would require manual cleaning by workers and make the work more cumbersome. At the same time, when the roller passes the protrusion, the elastic telescopic plate will return to its original position and retract, driving the roller to move upward, thereby generating vibration on the transmission plate. The vibration is transmitted to the welding table, causing the welding slag attached to it to loosen and fall off, thereby reducing the labor intensity of workers and improving their work efficiency.

[0007] Preferably, the anti-jamming device includes a collection box slidably connected to the inner wall of the workbench. A rotating plate is rotatably connected to the inner wall of the collection box via a torsion spring. An H-shaped frame is fixedly connected to the rear of the U-shaped frame, and a connecting plate is fixedly connected to the bottom of the H-shaped frame. A second push plate is fixedly connected to the inner wall of the connecting plate, a connecting block is fixedly connected to the front of the connecting plate, and a slag-removing ring is fixedly connected to the front of the connecting block. The surface of the collection box is in contact with the inner wall of the second push plate, the front of the rotating plate is in contact with the rear of the second push plate, and the circumferential surface of the lead screw is in contact with the inner wall of the slag-removing ring. This is done during the slag removal process. In the process, the moving connecting plate drives the second pusher plate to move, which disperses the welding slag that falls into the collection box, preventing it from accumulating in one place and wasting space. If the welding slag accumulates too high in one place, it may come into contact with the moving parts of the device, easily causing the device to jam and affecting normal welding. At the same time, the moving connecting block drives the slag removal ring to move, which can scrape off the welding slag that falls on the surface of the lead screw, preventing excessive accumulation of welding slag on the surface of the lead screw from affecting the normal operation of the device and causing welding to be unable to proceed normally, thus wasting time and resources and causing unnecessary losses.

[0008] The present invention, by adopting the above technical solution, can bring the following beneficial effects:

[0009] 1. This metal hinge welding positioning fixture, through the coordinated operation of a worktable, welding arm, welding table, U-shaped plate one, motor, lead screw, sliding plate, inclined plate one, sliding rod, lifting plate, L-shaped plate, pressure plate, inclined strip plate, fixing rod, push plate one, U-shaped plate two, inclined plate two, and triangular plate, allows the hinge to be placed in the welding area at the start of welding. After placement, the hinge contacts the pressure plate, thus fixing the hinge and preventing it from shaking or shifting during welding, thereby improving the quality and aesthetics of the weld. At the same time, the backward movement of U-shaped plate two drives the push plate one to move backward and stretches the spring, allowing the hinge to be adjusted before fixing. The hinge placed on the lifting plate is pushed towards the center, thus preventing the hinge from shifting and improving the accuracy of hinge welding.

[0010] 2. This metal hinge welding positioning fixture, through the coordinated operation of a fixed block, rotating rod one, straight plate, rotating rod two, slag pusher plate, U-shaped frame, elastic telescopic plate, roller, transmission plate, and protrusion, allows the rotating rod two to rotate and drive the slag pusher plate to move during the welding process. This helps to clean up the welding slag generated during welding, preventing excessive slag accumulation that would require manual cleaning and make the work more tedious. Simultaneously, when the roller passes the protrusion, the elastic telescopic plate retracts and moves the roller upward, vibrating the transmission plate. This vibration is transmitted to the welding table, causing the attached welding slag to loosen and fall off, thus reducing the labor intensity of workers and improving their work efficiency.

[0011] 3. This metal hinge welding positioning fixture, through the coordinated operation of the collection box, rotating plate, H-shaped frame, connecting plate, push plate II, connecting block, and slag removal ring, allows the connecting plate to move and drive the push plate II to move during the slag cleaning process. This disperses the slag that falls into the collection box, preventing it from accumulating in one place and wasting space. If the slag accumulates too high in one place, it may come into contact with the moving parts of the device, easily causing jamming and affecting normal welding. At the same time, the moving connecting block drives the slag removal ring to scrape off the slag that falls on the lead screw surface, preventing excessive slag accumulation from affecting the normal operation of the device and causing welding to be impossible, thus wasting time and resources and resulting in unnecessary losses. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 This is a half-sectional view of the lead screw structure of the present invention;

[0014] Figure 3 This is a half-sectional view of the welding station structure of the present invention;

[0015] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle;

[0016] Figure 5 This is a half-sectional view of the slag removal device of the present invention;

[0017] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point B in the middle;

[0018] Figure 7 This is a half-sectional view of the anti-jamming device of the present invention;

[0019] Figure 8 For the present invention Figure 7 Enlarged view of the structure at point C.

[0020] In the diagram: 1. Workbench; 2. Welding arm; 3. Welding table; 4. U-shaped plate one; 5. Motor; 6. Lead screw; 7. Sliding plate; 8. Inclined plate one; 9. Sliding rod; 10. Lifting plate; 11. L-shaped plate; 12. Pressure plate; 13. Inclined strip plate; 14. Fixed rod; 15. Push plate one; 16. U-shaped plate two; 17. Inclined plate two; 18. Slag removal device; 181. Fixed block; 182. Rotating rod one ; 183. Straight plate; 184. Rotating rod II; 185. Slag pusher plate; 186. U-shaped frame; 187. Elastic telescopic plate; 188. Roller; 189. Transmission plate; 1810. Protrusion; 19. Anti-jamming device; 191. Collection box; 192. Rotating plate; 193. H-shaped frame; 194. Connecting plate; 195. Pusher plate II; 196. Connecting block; 197. Slag removal ring; 20. Triangular plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-8One embodiment of the present invention is as follows: a metal hinge welding positioning fixture includes a worktable 1, a welding arm 2 disposed on the top of the worktable 1, a welding table 3 fixedly connected to the top of the worktable 1, a U-shaped plate 4 fixedly connected to the top of the welding table 3, a motor 5 fixedly connected to the top of the worktable 1, a lead screw 6 fixedly connected to the output end of the motor 5, a sliding plate 7 movably connected to the circumferential surface of the lead screw 6, an inclined plate 8 fixedly connected to the surface of the sliding plate 7, a sliding rod 9 fixedly connected to the front part of the U-shaped plate 4, and a lifting plate 10 slidably connected to the circumferential surface of the sliding rod 9. When welding the hinge begins, the hinge is placed in the welding area. After placement, the motor 5 is started, driving the lead screw 6 to rotate. The rotation of the lead screw 6 will... The sliding plate 7 moves left and right by contacting the threaded contact between the slider inside and the lead screw 6. This movement of the sliding plate 7 causes the inclined plate 8 to move. During this movement, the inclined plate 8 contacts the inclined surface of the triangular plate 20, generating an upward pressure that causes the triangular plate 20 to move upward. This upward movement of the triangular plate 20 causes the lifting plate 10 to move, which in turn moves the hinge on the lifting plate 10, bringing it into contact with the pressure plate 12. This fixes the hinge, preventing it from shaking or shifting during welding, thus improving the quality and aesthetics of the weld. An L-shaped plate 11 is fixedly connected to the inner wall of the U-shaped plate 4, and the inner wall of the L-shaped plate 11 is fixedly connected to... A pressure plate 12 and an L-shaped plate 11 are fixedly connected to the left side of an inclined plate 13. A fixed rod 14 is fixedly connected to the inner wall of a lifting plate 10 via a spring. A push plate 15 is slidably connected to the circumferential surface of the fixed rod 14. A U-shaped plate 16 is fixedly connected to the front of the push plate 15. An inclined plate 17 is fixedly connected to the top of the U-shaped plate 16. A triangular plate 20 is fixedly connected to the bottom of the lifting plate 10. A slag removal device 18 for cleaning welding slag is provided on the top of the U-shaped plate 14. An anti-jamming device 19 is provided on the inner wall of the workbench 1 to prevent jamming during use. The inner wall of the welding table 3 is rotatably connected to the circumferential surface of the lead screw 6. The top of the workbench 1 is in contact with the bottom of the inclined plate 18. The surface of the lifting plate 10 is in contact with the inner wall of the welding table 3. The top of the lifting plate 10 contacts the bottom of the U-shaped plate 16, and the bottom of the triangular plate 20 contacts the top of the workbench 1. Simultaneously, the lifting plate 10 moves upward, causing the fixed rod 14 to move upward. The fixed rod 14 moves, causing the push plate 15 to move upward. The push plate 15 moves, causing the U-shaped plate 16 to move upward. The U-shaped plate 16 moves, causing the inclined plate 17 to move upward. During the upward movement of the inclined plate 17, it contacts the inclined strip 13, causing the inclined strip 13 to exert a backward squeezing force on the inclined plate 17, forcing it to move backward. The backward movement of the inclined plate 17 causes the U-shaped plate 16 to move backward, which in turn causes the push plate 15 to move backward and stretches the spring.This allows for adjustment of the hinges before they are fixed in place. The hinges placed on the lifting plate 10 are pushed towards the center, preventing misalignment and improving the precision of the hinge welding.

[0023] The slag removal device 18 includes a fixed block 181, which is fixedly connected to the top of the lifting plate 10. A rotating rod 182 is rotatably connected to the inner wall of the fixed block 181 via a torsion spring. A straight plate 183 is fixedly connected to the circumferential surface of the rotating rod 182. A rotating rod 184 is fixedly connected to the side of the straight plate 183 away from the fixed block 181. A slag pusher plate 185 is fixedly connected to the circumferential surface of the rotating rod 184. During welding, the lifting plate 10 moves upward, causing the fixed block 181 to move upward, which in turn causes the rotating rod 182 to move upward. The rotating rod 182 moves upward, causing the straight plate 183 to move upward. During the upward movement, the straight plate 183 rotates counterclockwise via a torsion spring. The rotation of the straight plate 183 causes the rotating rod 184 to rotate, which in turn causes the slag-pushing plate 185 to move. This allows the welding slag generated during the welding process to be cleaned, preventing excessive slag accumulation that would require manual cleaning and make the work more cumbersome. A U-shaped frame 186 is fixedly connected to the top of the sliding plate 7, and an elastic telescopic plate 187 is fixedly connected to the inner wall of the U-shaped frame 186. The telescopic end is rotatably connected to a roller 188. A guide plate 189 is fixedly connected to the bottom of the welding table 3. A protrusion 1810 is fixedly connected to the bottom of the guide plate 189. The top of the welding table 3 contacts the bottom of the slag-pushing plate 185. The circumferential surface of the roller 188 contacts the bottom of the guide plate 189. Simultaneously, the sliding plate 7 moves, causing the U-shaped frame 186 to move. The movement of the U-shaped frame 186 causes the elastic telescopic plate 187 to move. The movement of the elastic telescopic plate 187 causes the roller 188 to move. The moving roller 188 will contact the guide plate 189, generating friction. As roller 188 rotates, it comes into contact with protrusion 1810 during its movement, generating pressure that causes roller 188 to move downwards. This downward movement stretches elastic telescopic plate 187. When roller 188 passes protrusion 1810, elastic telescopic plate 187 retracts and drives roller 188 upwards, thereby generating vibration on conductive plate 189. This vibration is then transmitted to welding table 3, causing the weld slag attached to it to loosen and fall off, thus reducing the labor intensity of workers and improving their work efficiency.

[0024] Working principle: When welding the hinge, the hinge is placed in the welding area. After placement, motor 5 starts, driving the lead screw 6 to rotate. The rotation of the lead screw 6 causes the slider inside the sliding plate 7 to contact the thread on the surface of the lead screw 6, thus allowing the sliding plate 7 to move left and right. The movement of the sliding plate 7 drives the inclined plate 8 to move. During the movement of the inclined plate 8, it contacts the inclined surface of the triangular plate 20, generating an upward compressive force on the triangular plate 20, causing the triangular plate 20 to move upward. The upward movement of the triangular plate 20 drives the lifting plate 10 to move, which in turn moves the hinge on the lifting plate 10, allowing the hinge to contact the pressure plate 12, thereby fixing the hinge and preventing it from shaking or shifting during welding. This improves the quality and aesthetics of the weld. The upward movement of the lifting plate 10 causes the fixing rod 14 to move upward. The movement of the fixing rod 14 causes the push plate 15 to move upward. The movement of the push plate 15 causes the U-shaped plate 16 to move upward. The movement of the U-shaped plate 16 causes the inclined plate 17 to move upward. During the upward movement of the inclined plate 17, the inclined plate 17 will come into contact with the inclined strip 13, so that the inclined strip 13 will exert a backward squeezing force on the inclined plate 17 through the inclined surface, forcing the inclined plate 17 to move backward. The backward movement of the inclined plate 17 causes the U-shaped plate 16 to move backward. The backward movement of the U-shaped plate 16 causes the push plate 15 to move backward and causes the spring to stretch. Thus, the hinge can be adjusted before fixing the hinge. The hinge placed on the lifting plate 10 is pushed towards the center, thereby avoiding the misalignment of the hinge placement position and improving the accuracy of the hinge welding.

[0025] During the welding process, the lifting plate 10 moves upward, causing the fixed block 181 to move upward. The fixed block 181 moves upward, causing the rotating rod 182 to move upward. The rotating rod 182 moves upward, causing the straight plate 183 to move upward. During the upward movement, the straight plate 183 rotates counterclockwise via a torsion spring. The rotation of the straight plate 183 causes the rotating rod 184 to rotate, which in turn causes the slag-pushing plate 185 to move. This allows the welding slag generated during the welding process to be cleaned, preventing excessive slag accumulation that would require manual cleaning and make the work more cumbersome. At the same time, the sliding plate 7 moves, causing the U-shaped frame 186 to move. The U-shaped frame 186 moves, causing the elastic telescopic plate 187 to move. The movement of the retractable plate 187 drives the roller 188 to move. The roller 188 comes into contact with the guide plate 189 and generates friction, causing the roller 188 to rotate. During the movement of the roller 188, it comes into contact with the protrusion 1810 and exerts a squeezing force on the roller 188, causing the roller 188 to move downward. The downward movement of the roller 188 causes the elastic telescopic plate 187 to stretch. When the roller 188 passes the protrusion 1810, the elastic telescopic plate 187 will return to its original position and retract, driving the roller 188 to move upward. This can generate vibration on the guide plate 189. The vibration is transmitted to the welding table 3, causing the weld slag attached to it to loosen and fall off, thereby reducing the labor intensity of workers and improving their work efficiency.

[0026] Please see Figures 1-8Based on the above embodiments, in another embodiment of the present invention, the anti-jamming device 19 includes a collection box 191, which is slidably connected to the inner wall of the workbench 1. A rotating plate 192 is rotatably connected to the inner wall of the collection box 191 via a torsion spring. An H-shaped frame 193 is fixedly connected to the rear of a U-shaped frame 186, and a connecting plate 194 is fixedly connected to the bottom of the H-shaped frame 193. A push plate 195 is fixedly connected to the inner wall of the connecting plate 194. During the cleaning of welding slag, the movement of the U-shaped frame 186 drives the movement of the H-shaped frame 193, which in turn drives the movement of the connecting plate 194, which in turn drives the movement of the push plate 195. This allows the welding slag falling into the collection box 191 to be dispersed, preventing it from accumulating in the same place and wasting space inside the collection box 191. If the welding slag accumulates too high in one place, it may come into contact with the operating parts of the device, easily causing jamming and other problems, thus affecting normal welding. When the welding slag in the collection box 191 is poured out, the movement of the collection box 191 causes the rotating plate 192 to move. The rotating plate 192 moves and contacts the rear of the push plate 195, thereby generating a squeezing force on the push plate 195 and causing the rotating plate 192 to rotate. Only then can the collection box 191 be pulled out normally. A connecting block 196 is fixedly connected to the front of the connecting plate 194, and a slag removal ring 197 is fixedly connected to the front of the connecting block 196. The surface of the collection box 191 and the inner wall of the push plate 195 are in contact with each other. The front part of the rotating plate 192 contacts the rear part of the push plate 195, and the circumferential surface of the lead screw 6 contacts the inner wall of the slag removal ring 197. At the same time, the connecting plate 194 moves, driving the connecting block 196 to move, and the connecting block 196 moves, driving the slag removal ring 197 to move. This can remove the welding slag that falls on the surface of the lead screw 6, preventing excessive accumulation of welding slag on the surface of the lead screw 6 from affecting the normal operation of the device, which would lead to welding failure and waste of time and resources, resulting in unnecessary losses.

[0027] Working principle: During the slag removal process, the U-shaped frame 186 moves, driving the H-shaped frame 193 to move. The H-shaped frame 193 moves, driving the connecting plate 194 to move. The connecting plate 194 moves, driving the push plate 195 to move. This disperses the slag that falls into the collection box 191, preventing it from accumulating in one place and wasting space. If the slag accumulates too high in one place, it may come into contact with the moving parts of the device, easily causing jamming and affecting normal welding. When the slag is poured out of the collection box 191... The movement of the collection box 191 causes the rotating plate 192 to move. The rotating plate 192 then contacts the rear of the push plate 195, exerting a squeezing force on the push plate 195 and causing the rotating plate 192 to rotate. Only then can the collection box 191 be pulled out normally. At the same time, the movement of the connecting plate 194 causes the connecting block 196 to move, which in turn causes the slag removal ring 197 to move. This scrapes away the welding slag that falls onto the surface of the lead screw 6, preventing excessive accumulation of welding slag on the surface of the lead screw 6 from affecting the normal operation of the device and causing welding to be unable to proceed normally. This would result in a waste of time and resources and unnecessary losses.

[0028] This invention provides a welding and positioning fixture for metal hinges. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A welding and positioning fixture for metal hinges, comprising a worktable (1), characterized in that: The top of the workbench (1) is provided with a welding arm (2), the top of the workbench (1) is fixedly connected with a welding table (3), the top of the welding table (3) is fixedly connected with a U-shaped plate (4), the top of the workbench (1) is fixedly connected with a motor (5), the output end of the motor (5) is fixedly connected with a lead screw (6), the circumferential surface of the lead screw (6) is movably connected with a sliding plate (7), the surface of the sliding plate (7) is fixedly connected with an inclined plate (8), the front part of the U-shaped plate (4) is fixedly connected with a sliding rod (9), and the circumferential surface of the sliding rod (9) is slidably connected with a lifting plate (10). The inner wall of the U-shaped plate (4) is fixedly connected to an L-shaped plate (11), the inner wall of the L-shaped plate (11) is fixedly connected to a pressure plate (12), the left side of the L-shaped plate (11) is fixedly connected to a slanted strip plate (13), the inner wall of the lifting plate (10) is fixedly connected to a fixing rod (14) by a spring, the circumferential surface of the fixing rod (14) is slidably connected to a push plate (15), the front part of the push plate (15) is fixedly connected to a U-shaped plate (16), the top of the U-shaped plate (16) is fixedly connected to a slanted plate (17), and the bottom of the lifting plate (10) is fixedly connected to a triangular plate (20). The top of the U-shaped plate (4) is provided with a slag removal device (18) for cleaning welding slag. The slag removal device (18) includes a fixed block (181), which is fixedly connected to the top of the lifting plate (10). The inner wall of the fixed block (181) is rotatably connected to a rotating rod (182) via a torsion spring. A straight plate (183) is fixedly connected to the circumferential surface of the rotating rod (182). A rotating rod (184) is fixedly connected to the side of the straight plate (183) away from the fixed block (181). A slag pusher plate (185) is fixedly connected to the circumferential surface of the rotating rod (184). The top of the sliding plate (7) is fixedly connected to a U-shaped frame (186), the inner wall of the U-shaped frame (186) is fixedly connected to an elastic telescopic plate (187), the telescopic end of the elastic telescopic plate (187) is rotatably connected to a roller (188), the bottom of the welding table (3) is fixedly connected to a conduction plate (189), and the bottom of the conduction plate (189) is fixedly connected to a protrusion (1810). The inner wall of the workbench (1) is provided with an anti-jamming device (19) to prevent jamming during use. The anti-jamming device (19) includes a collection box (191), which is slidably connected to the inner wall of the workbench (1). The inner wall of the collection box (191) is rotatably connected to a rotating plate (192) via a torsion spring. The rear of the U-shaped frame (186) is fixedly connected to an H-shaped frame (193). The bottom of the H-shaped frame (193) is fixedly connected to a connecting plate (194). The inner wall of the connecting plate (194) is fixedly connected to a push plate (195). The front of the connecting plate (194) is fixedly connected to a connecting block (196). The front of the connecting block (196) is fixedly connected to a slag removal ring (197).

2. The metal hinge welding positioning fixture according to claim 1, characterized in that: The inner wall of the welding table (3) is rotatably connected to the circumferential surface of the lead screw (6), the top of the workbench (1) is in contact with the bottom of the inclined plate (8), the surface of the lifting plate (10) is in contact with the inner wall of the welding table (3), the top of the lifting plate (10) is in contact with the bottom of the U-shaped plate (16), and the bottom of the triangular plate (20) is in contact with the top of the workbench (1).

3. The welding and positioning fixture for metal hinges according to claim 1, characterized in that: The top of the welding table (3) is in contact with the bottom of the slag pusher plate (185), and the circumferential surface of the roller (188) is in contact with the bottom of the guide plate (189).

4. The welding and positioning fixture for metal hinges according to claim 1, characterized in that: The surface of the collection box (191) is in contact with the inner wall of the push plate (195), the front part of the rotating plate (192) is in contact with the rear part of the push plate (195), and the circumferential surface of the screw (6) is in contact with the inner wall of the slag removal ring (197).

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