A friction stir welding process and equipment

Abstract

The present invention relates to the technical field of friction welding, and discloses a friction stir welding device, comprising a workbench, a tilted welding table is fixedly connected to the top of the workbench, two welding plates are placed directly above the tilted welding table, a stirring head is arranged on the top of the welding plate, a motor is fixedly connected to the top of the stirring head, a top plate is fixedly connected to the top of the motor, and adjustment components are arranged on both sides of the top plate. When the stirring head is driven to rotate by starting the motor, the welding plate will be pushed to the stirring head through the pushing component for stirring welding, and the welding plate after welding will be directly pushed to the inside of a cooling box for cooling, thereby avoiding the possible coarsening of the structure or the degradation of the performance caused by the weld staying at high temperature for a long time, thereby ensuring the welding quality while reducing manual intervention, thereby improving the overall efficiency of the production line and avoiding the risk of scalding or burns.

Description

Technical Field

[0001] The invention belongs to the technical field of friction welding, and in particular relates to a friction stir welding process and equipment. Background Art

[0002] Friction stir welding is a purely mechanical continuous solid-phase joining method that uses the friction heat between a high-speed rotating stirring tool and the welding material to join the materials. During the welding process, the stirring head rotates into the workpiece, and the friction between the stirring head and the material generates heat, causing the material to reach a thermoplastic state. As the stirring head moves forward, the thermoplastic material is transferred from the front of the stirring head to the rear, and the solid-phase connection between the workpieces is achieved under the mechanical forging of the stirring head.

[0003] Friction stir welding uses the friction heat generated between the high-speed rotating stirring head and the workpiece to soften the material, and realizes the solid-state connection of the material through the mechanical stirring action of the stirring head. After the material is softened by the heat generated by the friction of the stirring head for welding, the overall temperature of the workpiece is high, and the workpiece needs to be quickly taken out and placed in a cooling area to allow the workpiece to be shaped. During the cooling process of the workpiece, friction stir welding needs to be performed on the next group of workpieces to improve production efficiency. However, due to the high surface temperature of the workpiece and the need for the operator to take it out to the cooling area, there is a risk of scalding or burns.

[0004] To this end, the present invention provides a friction stir welding process and equipment. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art: solve at least one technical problem raised in the background technology.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a stir friction welding device described in the present invention comprises a workbench, a tilted welding table is fixedly connected to the top of the workbench, two welding plates are placed directly above the tilted welding table, a stirring head is arranged on the top of the welding plate, a motor is fixedly connected to the top of the stirring head, a top plate is fixedly connected to the top of the motor, and adjustment components are arranged on both sides of the top plate, the adjustment components are used to drive the stirring head to adjust the height, two slide grooves are symmetrically opened on the top of the tilted welding table, the inner walls of the two slide grooves are both slidably connected with two inner sliders, a push plate is fixedly connected between the tops of the two inner sliders, the push plate is located on one side of the two welding plates, and a pushing component for pushing the push plate to slide on the surface of the tilted welding table is arranged at the bottom of the push plate, a cooling box is arranged on the top of the workbench, and a sponge pad is arranged inside the cooling box.

[0007] Preferably, the adjustment assembly includes two mounting seats, which are respectively fixedly mounted on both sides of the inclined welding platform, and the interiors of the two mounting seats are slidably connected with lifting blocks, and the tops of the two lifting blocks are fixedly connected to the bottom side of the top plate, and the two sides of the two inclined welding platforms are fixedly connected with telescopic cylinders, and the output ends of the two telescopic cylinders are respectively fixedly connected to the bottoms of the two lifting blocks.

[0008] Preferably, a slide groove is provided on the side of the two mounting seats, and a clamping piece is fixedly connected to one side of the two lifting blocks. The outer wall of the clamping piece is slidably connected to the slide groove and adapts to each other. A connecting rod is fixedly connected between the two clamping pieces, and a scraper is fixedly connected to the outer wall of the connecting rod.

[0009] Preferably, the pushing assembly includes a fixed seat, which is fixedly installed on the top of the inclined welding table. The inner wall of the fixed seat is rotatably connected to a threaded rod, and the outer wall of the threaded rod is threadedly connected to an inner slider 1. The top of the inner slider 1 is fixedly connected to the bottom of the push plate, a collection box is provided on one side of the push plate, and a linkage assembly for driving the threaded rod to rotate is provided between the fixed seat and the motor.

[0010] Preferably, the linkage assembly includes bevel gear two, which is fixedly mounted on the outer wall of the motor output shaft, the teeth of bevel gear two are meshed with bevel gear one, one end of bevel gear one is fixedly connected to a rotating rod, the other end of the rotating rod is fixedly connected to a transmission ring, the outer wall of the transmission ring is transmission-connected to a transmission belt, the inner wall of one end of the transmission belt is transmission-connected to a connecting ring, and the connecting ring is fixedly connected to one end of the threaded rod.

[0011] Preferably, one side of the top plate is fixedly connected to a connecting plate, the bottom of the connecting plate is fixedly connected to a clamping rod shaft, the inner wall of the clamping rod shaft is rotatably connected to the outer wall of the rotating rod, the inner wall of one end of the transmission belt away from the connecting ring is transmission-connected to a fixing ring, the top of the fixing ring is rotatably connected to a fixing piece, and the fixing piece is fixedly installed on one side of the inclined welding table.

[0012] Preferably, a connecting seat is fixedly connected to the top of the inclined welding table, an electromagnet is fixedly installed on the middle inner wall of the connecting seat, magnet blocks are symmetrically slidably connected to the inner wall of the electromagnet, the tops of the two magnet blocks are fixedly connected to connecting rods, the tops of the connecting rods are fixedly connected to a movable plate, and a plurality of limit blocks are fixedly connected to one side of the movable plate.

[0013] Preferably, the surface magnetic poles of the electromagnet and the two magnet blocks that are close to each other are of opposite poles, a moving rod is fixedly connected to one side of the magnet block, a reset spring is provided on the outer wall of the moving rod, two ends of the reset spring are respectively fixedly connected to one side of the magnet block and the inner wall of the connecting seat, and the other ends of the two moving rods are fixedly connected to limiting sleeves.

[0014] A friction stir welding device is provided. A friction stir welding process suitable for the device is now proposed, comprising the following steps:

[0015] S1: Ensure that the friction stir welding equipment is in good working condition and select the appropriate stirring head shape and size according to welding requirements;

[0016] S2: placing two welding plates at specific positions, and starting the adjustment component to adjust the stirring head to the optimal welding position according to the thickness of the welding plates;

[0017] S3: Start the driving device, so that the stirring head starts to rotate, and the welding plate is pushed to the stirring head through the pushing component, so that the stirring head gradually performs friction welding on the weld;

[0018] S4: Before welding, the grease and other impurities adhering to the weld need to be processed to ensure the quality of the welding work;

[0019] S5: After welding, the welded plate needs to be placed in a cooling device for cooling immediately to ensure the stability of the weld;

[0020] S6: Perform visual and internal quality inspection on the completed welds to ensure that the weld quality meets the requirements.

[0021] A friction stir welding process, the specific use of the adjustment component and the push component includes the following steps:

[0022] S7: By starting the telescopic cylinder, its output end will drive the lifting block to slide inside the mounting seat. When the lifting block is lifted and slid, it will drive the top plate to adjust its height, so the motor and the stirring head are adjusted in height. By adjusting the height position of the stirring head, it is ensured that the stirring head can be kept in the best stirring welding position when facing welding plates of different thicknesses, so that the welding plate and the stirring head can reach an ideal plastic state;

[0023] S8: When the motor is started, its output shaft drives the stirring head to rotate, and at the same time, it drives the threaded rod to rotate through the linkage assembly. When the threaded rod rotates, it drives the inner slider to slide inside the fixed seat. During the sliding process of the fixed seat, it drives the push plate to move on the upper surface of the inclined welding table, thereby achieving the effect that the push plate can push the welding plate, and when the scraper scrapes off impurities such as grease on the welding plate, the impurities will eventually flow into the collection box along the surface of the welding plate.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. The friction stir welding process and equipment described in the present invention, when the stirring head is driven to rotate by starting the motor, the welding plate will be pushed to the stirring head through the pushing component for stirring welding, and the welding plate after welding will be directly pushed to the inside of the cooling box for cooling, avoiding the coarsening of the structure or the degradation of the performance caused by the weld staying at high temperature for a long time, thereby ensuring the welding quality while reducing manual intervention, thereby improving the overall efficiency of the production line and avoiding the risk of scalding or burns.

[0026] 2. The friction stir welding process and equipment described in the present invention adjusts the height of the scraper while adjusting the height of the stirring head according to the thickness of the welding plate, so that the bottom of the scraper can fit the weld of the two welding plates, so that before welding, the scraper can scrape away impurities such as grease in the weld, so as to avoid the high surface temperature of the welding plate, the volatilization of grease at high temperature, and the generation of a large amount of gas and smoke, which may interfere with the stability of the welding process.

[0027] 3. The friction stir welding process and equipment described in the present invention, by moving two magnet blocks closer to each other, will drive the movable plates to move closer to each other through the connecting rod until the two sets of limit blocks are attached to the two sides of the two welding plates. When the two welding plates are pushed by the push plates, the positions of the two welding plates are restricted by the limit blocks, so that the positions of the two welding plates will not shift when they are pushed to the welding position, ensuring that the welds are compact and complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 It is an overall stereogram of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the stirring head in the present invention;

[0031] Figure 3 It is a schematic diagram of the structure of the mounting seat in the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the scraper in the present invention;

[0033] Figure 5 It is a structural schematic diagram of the welding plate in the present invention;

[0034] Figure 6 It is a structural schematic diagram of the connecting seat in the present invention;

[0035] Figure 7 It is a schematic diagram of the structure of the connecting plate in the present invention;

[0036] Figure 8It is a structural schematic diagram of the fixing seat in the present invention;

[0037] Fig. 9 It is a structural schematic diagram of the inclined welding table in the present invention;

[0038] Fig.10 It is a welding process flow chart of the present invention.

[0039] In the figure: 1. workbench; 2. tilt welding table; 3. welding plate; 4. stirring head; 5. motor; 6. top plate; 7. mounting seat; 8. lifting block; 9. telescopic cylinder; 10. slideway 1; 11. clamping piece; 12. connecting rod; 13. scraper; 14. push plate; 15. inner slideway 1; 16. fixing seat; 17. threaded rod; 18. inner slideway 2; 19. slideway 2; 20. connecting ring; 21. transmission belt; 2 2. Transmission ring; 23. Fixed ring; 24. Fixing piece; 25. Clamping rod shaft; 26. Rotating rod; 27. Bevel gear one; 28. Connecting plate; 29. ​​Bevel gear two; 30. Connecting seat; 31. Electromagnet; 32. Magnet block; 33. Connecting rod; 34. Moving plate; 35. Limit block; 36. Reset spring; 37. Moving rod; 38. Limit sleeve; 39. Collecting box; 40. Cooling box; 41. Sponge pad. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0041] like Figures 1 to 9 As shown, a friction stir welding device comprises a workbench 1, the top of the workbench 1 is fixedly connected with an inclined welding table 2, two welding plates 3 are placed directly above the inclined welding table 2, a stirring head 4 is arranged on the top of the welding plate 3, a motor 5 is fixedly connected to the top of the stirring head 4, a top plate 6 is fixedly connected to the top of the motor 5, and adjustment components are arranged on both sides of the top plate 6, and the adjustment components are used to drive the stirring head 4 to adjust the height, a slide groove 19 is symmetrically opened on the top of the inclined welding table 2, the inner walls of the two slide grooves 19 are slidably connected with an inner slider 18, a push plate 14 is fixedly connected between the tops of the two inner sliders 18, the push plate 14 is located on one side of the two welding plates 3, and a pushing component for pushing the push plate 14 to slide on the surface of the inclined welding table 2 is arranged at the bottom of the push plate 14, a cooling box 40 is arranged on the top of the workbench 1, and a sponge pad 41 is arranged inside the cooling box 40.

[0042] During operation: after the material is softened by the heat generated by the friction of the stirring head for welding, the overall temperature of the workpiece is high, and the workpiece needs to be taken out quickly and placed in the cooling area so that the workpiece can be shaped. However, due to the high surface temperature of the workpiece and the need for the operator to take it out to the cooling area, there is a risk of scalding or burning. The two welding plates 3 that need to be stirred and welded are placed directly above the inclined welding table 2 and merged together. The height position of the motor 5 and the stirring head 4 is adjusted by the adjustment component so that the distance between the stirring head 4 and the inclined welding table 2 is equal to the thickness of the welding plate 3. The stirring head 4 is adjusted to the optimal welding position for the welding task, and then the motor 5 is started. Its output shaft will drive the stirring head 4 to rotate. When the stirring head 4 rotates, the push plate 14 on one side will move along the slide groove 19 on the surface of the inclined welding table 2 through the pushing component. During the movement of the push plate 14, it will push The two welding plates 3 are moved to move. When the two welding plates 3 gradually contact the stirring head 4, the stirring head 4 will weld the weld formed by the two welding plates 3 when rotating. After welding is completed, the welding plate 3 will continue to be pushed by the pushing plate 14 until the welding plate 3 is pushed to the inclined position of the inclined welding table 2, and the welding plate 3 will slide along the inclined surface to the cooling box 40 for cooling. Through the above embodiment, when the stirring head 4 is driven to rotate by starting the motor 5, the welding plate 3 will be pushed to the stirring head 4 for stirring welding through the pushing assembly, and the welding plate 3 after welding will be directly pushed to the inside of the cooling box 40 for cooling, avoiding the coarsening of the structure or the degradation of the performance caused by the weld staying at high temperature for a long time, thereby ensuring the welding quality while reducing manual intervention, thereby improving the overall efficiency of the production line and avoiding the risk of scalding or burns.

[0043] like Figure 3 to Figure 4 As shown, the adjustment assembly includes two mounting seats 7, and the two mounting seats 7 are respectively fixedly mounted on both sides of the inclined welding platform 2. The interiors of the two mounting seats 7 are slidably connected with lifting blocks 8, and the tops of the two lifting blocks 8 are fixedly connected to the bottom side of the top plate 6. Both sides of the two inclined welding platforms 2 are fixedly connected with telescopic cylinders 9, and the output ends of the two telescopic cylinders 9 are respectively fixedly connected to the bottoms of the two lifting blocks 8.

[0044] During operation: by starting the telescopic cylinder 9, its output end will drive the lifting block 8 to slide inside the mounting seat 7. When the lifting block 8 is lifted and slid, it will drive the top plate 6 to adjust its height, so the motor 5 and the stirring head 4 are adjusted in height. By adjusting the height position of the stirring head 4, it is ensured that when the stirring head 4 faces welding plates 3 of different thicknesses, the stirring head 4 can be maintained at the optimal stirring welding position, so that the welding plate 3 and the stirring head 4 reach an ideal plastic state, thereby improving the flexibility and scope of use of the device.

[0045] like Figure 3 to Figure 4As shown, a slide groove 10 is provided on the side of the two mounting seats 7, and a clamping member 11 is fixedly connected to one side of the two lifting blocks 8. The outer wall of the clamping member 11 is slidably connected to the slide groove 10 and adapts to each other. A connecting rod 12 is fixedly connected between the two clamping members 11, and a scraper 13 is fixedly connected to the outer wall of the connecting rod 12.

[0046] During operation: when the height position of the stirring head 4 is adjusted by the lifting block 8, the clamping piece 11 will be driven to slide on the slide groove 10, and the height position of the scraper 13 will be adjusted by the clamping pieces 11 and 12. Therefore, the height position of the scraper 13 will be adjusted while adjusting the height position of the stirring head 4 according to the thickness of the welding plate 3, so that the bottom of the scraper 13 can fit the welds of the two welding plates 3, so that before welding, the scraper 13 can scrape away impurities such as grease in the welds, so as to avoid the high surface temperature of the welding plate 3, the grease volatilizes at high temperature, and produces a large amount of gas and smoke, which may interfere with the stability of the welding process.

[0047] like Figures 7 and 8 As shown, the pushing assembly includes a fixed seat 16, which is fixedly installed on the top of the inclined welding table 2. The inner wall of the fixed seat 16 is rotatably connected to a threaded rod 17, and the outer wall of the threaded rod 17 is threadedly connected to an inner slider 15. The top of the inner slider 15 is fixedly connected to the bottom of the push plate 14, and a collection box 39 is provided on one side of the push plate 14. A linkage assembly is provided between the fixed seat 16 and the motor 5 to drive the threaded rod 17 to rotate.

[0048] During operation: when the motor 5 is started, its output shaft drives the stirring head 4 to rotate, and at the same time, it drives the threaded rod 17 to rotate through the linkage assembly. When the threaded rod 17 rotates, it drives the inner slider 15 to slide inside the fixed seat 16. During the sliding process of the fixed seat 16, it drives the push plate 14 to move on the upper surface of the inclined welding table 2, thereby achieving the effect of the push plate 14 being able to push the welding plate 3, and when the scraper 13 scrapes off impurities such as grease on the welding plate 3, the impurities will eventually flow into the collection box 39 along the surface of the welding plate 3, thereby achieving the effect of collecting impurities.

[0049] like Figures 7 and 8 As shown, the linkage assembly includes a bevel gear 29, which is fixedly mounted on the outer wall of the output shaft of the motor 5. The teeth of the bevel gear 29 mesh with the bevel gear 1 27. One end of the bevel gear 1 27 is fixedly connected to a rotating rod 26, and the other end of the rotating rod 26 is fixedly connected to a transmission ring 22. The outer wall of the transmission ring 22 is transmission-connected to a transmission belt 21, and the inner wall of one end of the transmission belt 21 is transmission-connected to a connecting ring 20. The connecting ring 20 is fixedly connected to one end of the threaded rod 17.

[0050] During operation: the output shaft of the motor 5 will drive the bevel gear 2 29 to rotate, and the bevel gear 2 29 will drive the bevel gear 1 27 to rotate. When the bevel gear 1 27 rotates, it will drive the transmission ring 22 to rotate through the rotating rod 26. When the transmission ring 22 rotates, it will drive the connecting ring 20 to rotate through the transmission belt 21. When the connecting ring 20 rotates, it drives the threaded rod 17 to rotate so that the push plate 14 can push the welding plate 3 to move.

[0051] like Figures 7 and 8 As shown, one side of the top plate 6 is fixedly connected to a connecting plate 28, the bottom of the connecting plate 28 is fixedly connected to a clamping rod shaft 25, the inner wall of the clamping rod shaft 25 is rotatably connected to the outer wall of the rotating rod 26, the inner wall of one end of the transmission belt 21 away from the connecting ring 20 is transmission-connected to a fixing ring 23, the top of the fixing ring 23 is rotatably connected to a fixing part 24, and the fixing part 24 is fixedly installed on one side of the inclined welding table 2.

[0052] During operation: since the connecting plate 28 is fixedly installed on one side of the top plate 6, when the height position of the top plate 6 is adjusted, the connecting plate 28 will also be adjusted, and the rotating rod 26 is fixedly installed on the bottom of the connecting plate 28 through the clamping rod shaft 25, so the bevel gear 1 27 and the bevel gear 2 29 can always maintain a meshing relationship, and when the rotating rod 26 is adjusted in position, the position of the transmission ring 22 will also change, and the other end of the transmission belt 21 is fixed by the fixing ring 23, so that the transmission ring 22 can always maintain a transmission relationship with the transmission belt 21 when the height position is adjusted.

[0053] like Figures 5 and 6 As shown, a connecting seat 30 is fixedly connected to the top of the inclined welding table 2, an electromagnet 31 is fixedly installed on the middle inner wall of the connecting seat 30, and a magnet block 32 is symmetrically slidably connected to the inner wall of the electromagnet 31. The tops of the two magnet blocks 32 are fixedly connected to connecting rods 33, the tops of the connecting rods 33 are fixedly connected to a movable plate 34, and one side of the movable plate 34 is fixedly connected to a plurality of limit blocks 35.

[0054] During operation: when the two welding plates 3 are combined and placed above the inclined welding table 2, current is passed through the electromagnet 31, so that the electromagnet 31 can attract the magnet block 32 to move toward the electromagnet 31. When the two magnet blocks 32 move closer to each other, the connecting rod 33 will drive the moving plate 34 to move closer to each other until the two sets of limit blocks 35 are attached to the two sides of the two welding plates 3. When the two welding plates 3 are pushed by the push plate 14, the two welding plates 3 are restricted in position by the limit blocks 35, so that the position of the two welding plates 3 will not be offset when they are pushed to the welding position, ensuring that the welds are compact and complete.

[0055] like Figures 5 and 6As shown, the surface magnetic poles of the electromagnet 31 and the two magnet blocks 32 that are close to each other are opposite poles, a moving rod 37 is fixedly connected to one side of the magnet block 32, and a reset spring 36 is provided on the outer wall of the moving rod 37. The two ends of the reset spring 36 are respectively fixedly connected to one side of the magnet block 32 and the inner wall of the connecting seat 30, and the other ends of the two moving rods 37 are fixedly connected to the limiting sleeve 38.

[0056] During operation: Since the surface magnetic poles of the electromagnet 31 and the two magnet blocks 32 are close to each other, when current is passed through the electromagnet 31, the two magnet blocks 32 will move, and when the welding plate 3 is welded and falls into the interior of the cooling box 40, the current passed through the electromagnet 31 is turned off, and the two magnet blocks 32 can be reset under the action of the reset spring 36 and the moving rod 37, so as to facilitate the next use.

[0057] A friction stir welding device is provided. A friction stir welding process suitable for the device is now proposed, comprising the following steps:

[0058] S1: Ensure that the friction stir welding equipment is in good working condition and select the appropriate shape and size of the stirring head 4 according to the welding requirements;

[0059] S2: placing two welding plates 3 at specific positions, and starting the adjustment component to adjust the stirring head 4 to the optimal welding position according to the thickness of the welding plates 3;

[0060] S3: starting the driving device so that the stirring head 4 starts to rotate, and the welding plate 3 is pushed to the stirring head 4 through the pushing component, so that the stirring head 4 gradually performs friction welding on the weld;

[0061] S4: Before welding, the grease and other impurities adhering to the weld need to be processed to ensure the quality of the welding work;

[0062] S5: After the welding is completed, the welding plate 3 needs to be immediately placed in a cooling device for cooling to ensure the stability of the weld;

[0063] S6: Perform visual and internal quality inspection on the completed welds to ensure that the weld quality meets the requirements.

[0064] A friction stir welding process, the specific use of the adjustment component and the push component includes the following steps:

[0065] S7: By starting the telescopic cylinder 9, its output end will drive the lifting block 8 to slide inside the mounting seat 7. When the lifting block 8 is lifted and slid, it will drive the top plate 6 to adjust its height, so that the motor 5 and the stirring head 4 are adjusted in height. By adjusting the height position of the stirring head 4, it is ensured that when the stirring head 4 faces welding plates 3 of different thicknesses, the stirring head 4 can be kept in the best stirring welding position, so that the welding plate 3 and the stirring head 4 reach an ideal plastic state;

[0066] S8: When the motor 5 is started, its output shaft drives the stirring head 4 to rotate, and at the same time, it drives the threaded rod 17 to rotate through the linkage assembly. When the threaded rod 17 rotates, it drives the inner slider 15 to slide inside the fixed seat 16. During the sliding process of the fixed seat 16, it drives the push plate 14 to move on the upper surface of the inclined welding table 2, thereby achieving the effect that the push plate 14 can push the welding plate 3, and when the scraper 13 scrapes off impurities such as grease on the welding plate 3, the impurities will eventually flow into the collection box 39 along the surface of the welding plate 3.

[0067] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A friction stir welding device, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to an inclined welding table (2), two welding plates (3) are placed directly above the inclined welding table (2), a stirring head (4) is arranged on the top of the welding plate (3), a motor (5) is fixedly connected to the top of the stirring head (4), a top plate (6) is fixedly connected to the top of the motor (5), adjustment components are arranged on both sides of the top plate (6), and the adjustment components are used to drive the stirring head (4) to adjust the height, a sliding groove (19) is symmetrically opened on the top of the inclined welding table (2), the inner walls of the two sliding grooves (19) are slidably connected to the inner sliding blocks (18), a push plate (14) is fixedly connected between the tops of the two inner sliding blocks (18), the push plate (14) is located on one side of the two welding plates (3), and a pushing component is arranged at the bottom of the push plate (14) for pushing the push plate (14) to slide on the surface of the inclined welding table (2), a cooling box (40) is arranged on the top of the workbench (1), and a sponge pad (41) is arranged inside the cooling box (40); The pushing assembly comprises a fixed seat (16), the fixed seat (16) is fixedly mounted on the top of the inclined welding table (2), the inner wall of the fixed seat (16) is rotatably connected to a threaded rod (17), the outer wall of the threaded rod (17) is threadedly connected to an inner slider (15), the top of the inner slider (15) is fixedly connected to the bottom of the push plate (14), a collecting box (39) is provided on one side of the push plate (14), and a linkage assembly is provided between the fixed seat (16) and the motor (5) for driving the threaded rod (17) to rotate; The linkage assembly comprises a second bevel gear (29), the second bevel gear (29) being fixedly mounted on the outer wall of the output shaft of the motor (5), the teeth of the second bevel gear (29) being meshed with the first bevel gear (27), one end of the first bevel gear (27) being fixedly connected to a rotating rod (26), the other end of the rotating rod (26) being fixedly connected to a transmission ring (22), the outer wall of the transmission ring (22) being transmission-connected to a transmission belt (21), the inner wall of one end of the transmission belt (21) being transmission-connected to a connecting ring (20), and the connecting ring (20) being fixedly connected to one end of the threaded rod (17); A connecting plate (28) is fixedly connected to one side of the top plate (6), a clamping rod shaft (25) is fixedly connected to the bottom of the connecting plate (28), an inner wall of the clamping rod shaft (25) is rotatably connected to an outer wall of a rotating rod (26), an inner wall of an end of the transmission belt (21) away from the connecting ring (20) is rotatably connected to a fixing ring (23), a top of the fixing ring (23) is rotatably connected to a fixing member (24), and the fixing member (24) is fixedly mounted on one side of the inclined welding table (2).

2. A friction stir welding device according to claim 1, characterized in that: The adjustment assembly comprises two mounting seats (7), the two mounting seats (7) are respectively fixedly mounted on two sides of the tilting welding platform (2), the interiors of the two mounting seats (7) are slidably connected with lifting blocks (8), the tops of the two lifting blocks (8) are fixedly connected to the bottom side of the top plate (6), and the two sides of the two tilting welding platforms (2) are fixedly connected with telescopic cylinders (9), and the output ends of the two telescopic cylinders (9) are respectively fixedly connected to the bottoms of the two lifting blocks (8).

3. A friction stir welding device according to claim 2, characterized in that: A slide groove (10) is provided on the side of the two mounting seats (7), a clamping member (11) is fixedly connected to one side of the two lifting blocks (8), the outer wall of the clamping member (11) is slidably connected to the slide groove (10) and is adapted to each other, a connecting rod (12) is fixedly connected between the two clamping members (11), and a scraper (13) is fixedly connected to the outer wall of the connecting rod (12).

4. A friction stir welding device according to claim 3, characterized in that: A connecting seat (30) is fixedly connected to the top of the inclined welding table (2); a conductive electromagnet (31) is fixedly installed on the inner wall of the middle portion of the connecting seat (30); a magnet block (32) is symmetrically slidably connected to the inner wall of the conductive electromagnet (31); a connecting rod (33) is fixedly connected to the top of the two magnet blocks (32); a movable plate (34) is fixedly connected to the top of the connecting rod (33); and a plurality of limit blocks (35) are fixedly connected to one side of the movable plate (34).

5. A friction stir welding device according to claim 4, characterized in that: The surface magnetic poles of the electromagnet (31) and the two magnet blocks (32) that are close to each other are opposite poles. A moving rod (37) is fixedly connected to one side of the magnet block (32). A return spring (36) is provided on the outer wall of the moving rod (37). Two ends of the return spring (36) are respectively fixedly connected to one side of the magnet block (32) and the inner wall of the connecting seat (30). The other ends of the two moving rods (37) are fixedly connected to the limiting sleeve (38).

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