A friction stir welding tooling

Abstract

The present invention relates to a friction stir welding tooling, belonging to the technical field of heat sink processing. The friction stir welding tooling includes a placement table and a tooling unit arranged on the placement table. The tooling unit includes a horizontal clamping assembly, a pressing seat, and a pneumatic connecting rod assembly. The horizontal clamping assembly is used to press the heat sink component located above onto the heat sink component located below. The pressing seat is movably arranged on the placement table and is used to press the heat sink component located above. The starting connecting rod assembly is used to adjust the pressing seat to press or release the heat sink component located above. The present invention has the advantage of improving the welding efficiency of heat sink components.

Description

Technical Field

[0001] The present invention relates to the technical field of heat sink processing, and in particular to a friction stir welding tooling. Background Art

[0002] A heat sink is a heat dissipation component used in electronic devices. The processing of the heat sink mainly includes processes such as turning, grinding, and fluting. For some complex-shaped heat sinks, a combined heat dissipation structure needs to be made by welding.

[0003] Currently, friction stir welding is usually used to weld the upper and lower parts of the heat sink together. A groove is provided on the upper surface of the heat sink component located below, and the heat sink component located above is used to be embedded in the groove. During operation, first, the two heat sink components fitted together are placed on the tooling, and then clamped and fixed by the tooling, so that the heat sink component located above is pressed against the heat sink component located below. Then, the welding head of the friction stir welding is used to spot-weld the fitting position of the two heat sink components. Then, the pressing of the tooling on the heat sink component located above is released to make way for the welding head. Then, the welding head is used to weld along the circumference of the fitting part of the two heat sink components.

[0004] Since the tooling mostly uses a threaded fixing method, it is time-consuming to adjust the tooling to lock or make way for the heat sink component, and the welding efficiency is low. Summary of the Invention

[0005] To help improve the welding efficiency of the heat sink component, the present invention provides a friction stir welding tooling.

[0006] The friction stir welding tooling provided by the present invention adopts the following technical solution:

[0007] A friction stir welding tooling includes a placement table and a tooling unit arranged on the placement table. The tooling unit includes a horizontal clamping assembly, a pressing seat, and a pneumatic link assembly. The horizontal clamping assembly is used to press the heat sink component located above against the heat sink component located below. The pressing seat is movably arranged on the placement table and is used to press the heat sink component located above. The starting link assembly is used to adjust the pressing seat to press or release the heat sink component located above.

[0008] Preferably, the pneumatic link assembly includes a first pneumatic rod disposed on the placement table and a link hinged to the placement table. The extending direction of the first pneumatic rod is arranged vertically. The pressing seat is hinged to the moving end of the first pneumatic rod. The hinge axis of the pressing seat is perpendicular to the extending direction of the first pneumatic rod. The hinge axis of the link is parallel to the hinge axis of the pressing seat. The link is located below the pressing seat. The link is located on the side of the first pneumatic rod close to the heat sink component. The side of the link away from the placement table is hinged to the pressing seat. When the pressing seat is in a horizontal state, the link is in a vertical state.

[0009] Preferably, the horizontal clamping assembly includes a fixed limit seat disposed on the placement table, a clamping limit seat slidably disposed on the placement table, and a pneumatic adjusting member disposed on the placement table. The fixed limit seat and the clamping limit seat are arranged oppositely. The sliding direction of the clamping limit seat is arranged horizontally. The pneumatic adjusting member is used to adjust the sliding of the clamping limit seat in a direction approaching or departing from the fixed limit seat.

[0010] Preferably, the pneumatic adjusting member includes a second pneumatic rod disposed on the placement table and a single-sided inclined block disposed on the moving end of the second pneumatic rod. The extending direction of the second pneumatic rod is arranged vertically. The single-sided inclined block is located on the side of the clamping limit seat away from the fixed limit seat. The surface of the single-sided inclined block close to the clamping limit seat is an inclined surface, and the inclined surface slopes upward toward the side close to the clamping limit seat. The clamping limit seat is in sliding fit with the inclined surface of the single-sided inclined block.

[0011] Preferably, a guiding block is disposed on the placement table. The guiding block is located on the side of the single-sided inclined block away from the clamping limit seat. The surface of the single-sided inclined block away from the clamping limit seat is in sliding fit with the guiding block.

[0012] Preferably, two sets of horizontal clamping assemblies are provided in the tooling unit. The arrangement direction of the fixed limit seat and the clamping limit seat in one set of the horizontal clamping assemblies is perpendicular to the arrangement direction of the fixed limit seat and the clamping limit seat in the other set of the horizontal clamping assemblies.

[0013] Preferably, four pressing seats are provided. The pneumatic link assemblies correspond to the pressing seats one by one. The four pressing seats are located at the four corners of the heat sink component.

[0014] Preferably, an air delivery cylinder is provided on the fixed limit seat. A plurality of nozzles are communicated on one side of the air delivery cylinder close to the clamping limit seat. The side of the air delivery cylinder far from the nozzles is communicated with an adjusting cylinder through a connecting pipe. A piston block is slidably arranged in the adjusting cylinder. A sliding rod is arranged on the side of the piston block far from the connecting pipe. The sliding rod slidably penetrates through the adjusting cylinder. An elastic member for driving the sliding rod to reset is arranged in the adjusting cylinder. A transmission assembly is arranged on the placing table. The transmission assembly is used for driving the sliding rod to slide towards the direction close to the connecting pipe when the first pneumatic rod extends or retracts.

[0015] Preferably, the transmission assembly includes a rotating column rotatably sleeved on the sliding rod, an abutting rod arranged on the moving end of the first pneumatic rod close to one side, and a rotating member arranged on the placing table. The rotation axis of the rotating column is parallel to the sliding direction of the sliding rod. An abutting inclined surface is arranged on the side of the rotating column far from the sliding rod. The abutting rod is used for relatively sliding and abutting against the abutting inclined surface on the rotating column. The rotating member is used for adjusting the rotation of the rotating column.

[0016] Preferably, the rotating member includes a support plate, a rotating ring, a coil spring, a fixing rod, a locking rod, a first spring, a first magnet, a second magnet and a connecting rod. The support plate is arranged on the placing table. A through hole for the rotating column to pass through is formed on the support plate. The rotating ring is rotatably arranged on the support plate. The rotating ring is concentric with the rotating column. The outer wall of the rotating column is slidably connected with the rotating ring. The fixing rod is arranged on the first pneumatic rod close to the side. The coil spring is sleeved outside the rotating ring. One end of the inner circle of the coil spring is arranged on the rotating ring, and one end of the outer circle is arranged on the fixing rod. Two locking rods are provided. The two locking rods are aligned with the upper and lower sides of the rotating ring. The locking rods slidably penetrate through the support plate. The sliding direction of the locking rods is parallel to the sliding direction of the sliding rod. The locking rods are used for abutting against the rotating ring to limit the rotation of the rotating ring. The first spring is sleeved on the locking rods. One end of the first spring is arranged on the support plate, and the other end is arranged on the locking rods. The first spring is used for pulling the locking rods to slide towards the direction close to the rotating ring. The first magnet is arranged on the abutting rod. The second magnet is arranged on the locking rod. The first magnet is used for adsorbing the second magnet to drive the locking rod to slide away from the rotating ring. The adsorption force between the first magnet and the second magnet is greater than the elastic force of the first spring. The connecting rod connects the locking rods aligned with the upper and lower sides of the rotating ring.

[0017] In summary, the present invention includes the following beneficial technical effects:

[0018] In use, first place the two heat sink components that are vertically fitted together on the placement table. Then, clamp and fix the heat sink component at the bottom through the horizontal clamping assembly. Next, adjust the pressing seat through the pneumatic link assembly to press the heat sink component at the top onto the heat sink component at the bottom. Then, spot-weld the fitting part of the two vertically fitted heat sink components through the welding head of friction stir welding. Then, adjust the pressing seat through the pneumatic link assembly to loosen the heat sink component above to make way for the welding head of friction stir welding. Then, the welding head of friction stir welding can weld the fitting part of the two vertically fitted heat sink components circumferentially. Compared with the threaded fixing method, adjusting the state of the pressing seat through the pneumatic link assembly of the pneumatic method is simple and fast, saving operation time and helping to improve the welding efficiency of the heat sink components. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of the embodiment of the present invention.

[0020] Figure 2 is the overall structural sectional view of a single tooling unit in the embodiment of the present invention.

[0021] Figure 3 is the overall structural schematic diagram of the horizontal clamping assembly in the embodiment of the present invention.

[0022] Figure 4 is the overall structural schematic diagram of the transmission assembly in the embodiment of the present invention.

[0023] Figure 5 is the overall structural sectional view of the adjusting cylinder in the embodiment of the present invention.

[0024] Figure 6 is Figure 5 the enlarged view of part A in

[0025] Description of the Reference Numerals: 1. Placement table; 2. Tooling unit; 21. Horizontal clamping assembly; 211. Fixed limit seat; 212. Clamping limit seat; 213. Pneumatic adjusting member; 2131. Second pneumatic rod; 2132. Unilateral inclined block; 22. Pressing seat; 23. Pneumatic link assembly; 231. First pneumatic rod; 232. Link; 3. Guide block; 4. Air delivery cylinder; 5. Nozzle; 6. Adjusting cylinder; 7. Piston block; 8. Sliding rod; 9. Rotating column; 10. Abutting rod; 11. Support plate; 12. Rotating ring; 13. Torsion spring; 14. Fixed rod; 15. Locking rod; 16. First spring; 17. Second magnet; 18. Connecting rod; 19. Through hole; 20. Sliding groove; 24. Second spring; 25. Connecting plate; 26. Fixed frame; 27. Locking block; 28. Gear ring; 29. Connecting pipe. Detailed Embodiment

[0026] The following combinesFigures 1-6 A further detailed description of the present invention will be given below.

[0027] An embodiment of the present invention discloses a friction stir welding tooling. Referring to Figure 1 , the friction stir welding tooling includes a placement table 1 and a tooling unit 2. The placement table 1 is used to be installed on the body of a welding machine. The tooling unit 2 is arranged on the placement table 1. The tooling unit 2 is used to clamp and fix two heat sink components to be welded. Specifically, the number of the tooling units 2 can be set according to needs. In the embodiment of the present invention, two groups of tooling units 2 are arranged on the placement table 1.

[0028] Referring to Figure 1 and Figure 2 , each group of tooling units 2 includes a horizontal clamping assembly 21, a pressing seat 22 and a pneumatic link assembly 23. The horizontal clamping assembly 21 is arranged on the placement table 1 and is used to clamp and fix the heat sink component located below. The pressing seat 22 is movably arranged on the placement table 1 and is used to press the heat sink component located above onto the heat sink component located below. The pneumatic link assembly 23 is arranged on the placement table 1 and is used to adjust the pressing seat 22 to press or release the heat sink component located above.

[0029] During use, first place the two heat sink components that have been fitted up and down at the required position on the placement table 1. Then, clamp and fix the heat sink component located below through the horizontal clamping assembly 21. Then, adjust the pressing seat 22 through the pneumatic link assembly 23 to press the heat sink component located above onto the heat sink component located below. Then, spot-weld the fitting part of the two heat sink components that are fitted up and down through the welding head of the friction stir welding. Then, adjust the pressing seat 22 through the pneumatic link assembly 23 to release the heat sink component located above to make way for the welding head of the friction welding. Then, the welding head of the friction stir welding can be used to weld the two heat sink components that are fitted up and down along the circumference. Compared with the threaded fixing method, the state of the pressing seat 22 is adjusted through the pneumatic link assembly 23 of the pneumatic method, which is simple and fast, saves operation time, and helps to improve the welding efficiency of the heat sink components.

[0030] Referring to Figure 2 and Figure 3, To facilitate the clamping and fixing of the heat sink component located below, the horizontal clamping assembly 21 includes a fixed limit seat 211, a clamping limit seat 212, and a pneumatic adjusting member 213. The fixed limit seat 211 is fixed to the placement table 1 by bolts. A sliding groove 20 is formed on the placement table 1. The clamping limit seat 212 is slidably disposed in the sliding groove 20. The sliding direction of the clamping limit seat 212 is set in the horizontal direction. The fixed limit seat 211 and the clamping limit seat 212 are oppositely arranged. The heat sink component is placed between the fixed limit seat 211 and the clamping limit seat 212. Specifically, the sliding direction of the clamping limit seat 212 is parallel to the arrangement direction of the clamping limit seat 212 and the fixed limit seat 211. The pneumatic adjusting member 213 is disposed on the placement table 1. The pneumatic adjusting member 213 is used to adjust the sliding of the clamping limit seat 212 in a direction approaching or departing from the fixed limit seat 211.

[0031] Referring to Figure 2 and Figure 3 , To facilitate the adjustment of the sliding of the clamping limit seat 212 in a direction approaching or departing from the fixed limit seat 211, the pneumatic adjusting member 213 includes a second pneumatic rod 2131 and a unilateral inclined block 2132. The second pneumatic rod 2131 is fixedly embedded in the placement table 1. The extending direction of the second pneumatic rod 2131 is set in the vertical direction. The unilateral inclined block 2132 is fixed to the moving end of the second pneumatic rod 2131. The unilateral inclined block 2132 slidably penetrates through the sliding groove 20 and is located on the side of the clamping limit seat 212 away from the fixed limit seat 211. The surface of the unilateral inclined block 2132 close to the clamping limit seat 212 is an inclined surface, and the side of the inclined surface close to the clamping limit seat 212 is inclined upward. The clamping limit seat 212 is in sliding fit with the inclined surface of the unilateral inclined block 2132.

[0032] When it is necessary to drive the clamping limit seat 212 to slide in a direction approaching the fixed limit seat 211, start the second pneumatic rod 2131 to drive the unilateral inclined block 2132 to move downward. Since the inclined surface of the unilateral inclined block 2132 is in sliding fit with the clamping limit seat 212, during the downward movement of the unilateral inclined block 2132, it abuts against the clamping limit seat 212 through the inclined surface and slides in a direction approaching the fixed limit seat 211, thereby helping to clamp the heat sink component located below during welding; when it is necessary to drive the clamping limit seat 212 to slide in a direction departing from the fixed limit seat 211, start the second pneumatic rod 2131 to drive the unilateral inclined block 2132 to move upward. At this time, during the upward movement of the unilateral inclined block 2132, it pulls the clamping limit seat 212 to slide in a direction departing from the fixed limit seat 211, which helps to loosen the heat sink component located below during welding by the clamping limit seat 212 and facilitates the removal of the heat sink component.

[0033] Referring to Figure 2 and Figure 3, to facilitate guiding the sliding of the unilateral inclined block 2132, a guiding block 3 is fixedly arranged in the sliding groove 20. The guiding block 3 is located on the side of the unilateral inclined block 2132 away from the clamping and limiting seat 212. The plane on the side of the unilateral inclined block 2132 away from the clamping and limiting seat 212 is in sliding fit with the guiding block 3.

[0034] Referring to Figure 1 and Figure 2 , two sets of horizontal clamping assemblies 21 are provided for each tooling unit 2. The arrangement direction of the fixed limiting seat 211 and the clamping and limiting seat 212 in one set of the horizontal clamping assemblies 21 is perpendicular to the arrangement direction of the fixed limiting seat 211 and the clamping and limiting seat 212 in the other set of the horizontal clamping assemblies 21. The sliding grooves 20 correspond to the clamping and limiting seats 212 one by one. In the embodiment of the present invention, in order to adapt to the rectangular heat sink component, the length of the fixed limiting seat 211 in one set of the horizontal clamping assemblies 21 is greater than the length of the fixed limiting seat 211 in the other set of the horizontal clamping assemblies 21, so that the fixed limiting seats 211 and the clamping and limiting seats 212 in the two tooling units 2 are located on the four sides of the rectangular heat sink component. Designing the horizontal clamping assemblies 21 of each tooling unit 2 into two sets helps to improve the clamping and fixing effect on the heat sink component.

[0035] Referring to Figure 1 and Figure 2 , to improve the pressing effect on the heat sink component located above during welding, a plurality of pressing seats 22 are provided. In the embodiment of the present invention, four pressing seats 22 are provided. The pneumatic link assemblies 23 correspond to the pressing seats 22 one by one. The four pressing seats 22 are located in the four corner directions of the heat sink component, so that the pressing seats 22 are located between adjacent fixed limiting seats 211, between adjacent clamping and limiting seats 212, or between adjacent fixed limiting seats 211 and clamping and limiting seats 212.

[0036] Referring to Figure 1 and Figure 2, To facilitate the adjustment of the pressing seat 22 to clamp or release the heat sink component located above during welding, the pneumatic link assembly 23 includes a first pneumatic rod 231 and a link 232. The first pneumatic rod 231 is fixedly embedded in the placement table 1, and the extending direction of the first pneumatic rod 231 is arranged in the vertical direction. One side of the pressing seat 22 away from the heat sink component is hinged to the moving end of the corresponding first pneumatic rod 231, and the hinge axis of the pressing seat 22 is perpendicular to the extending direction of the first pneumatic rod 231. The link 232 is located on the side of the corresponding first pneumatic rod 231 close to the heat sink component. One end of the link 232 is hinged to the placement table 1, and the other end is hinged to the middle of the pressing seat 22. The hinge axis of the link 232 is parallel to the hinge axis of the corresponding pressing seat 22. The link 232 is located below the corresponding pressing seat 22. When the pressing seat 22 is in the horizontal state, the link 232 is in the vertical state. For the convenience of operators, the placement table 1 is respectively provided with operation control rods for controlling the operation of the first pneumatic rod 231 and the second pneumatic rod 2131.

[0037] When it is necessary to adjust the pressing seat 22 to clamp the heat sink component located above during welding, start the first pneumatic rod 231. The first pneumatic rod 231 drives the side of the pressing seat 22 away from the heat sink component to move upward. With the cooperation of the corresponding link 232, the side of the pressing seat 22 close to the heat sink component rotates downward to the horizontal state, so as to realize the pressing and fixing of the heat sink component located above during welding by the pressing seat 22. When it is necessary to release the heat sink component, start the first pneumatic rod 231. The first pneumatic rod 231 moves downward to pull the side of the pressing seat 22 away from the heat sink component to rotate downward, so that one end of the pressing seat 22 abutting against the heat sink component warps upward under the cooperation of the link 232, so as to disengage from the heat sink component located above during welding, realizing the rapid fixing or releasing of the heat sink component, and thus contributing to improving the welding efficiency.

[0038] Refer to Figure 2 , To help save materials, the upper surface of the end of the pressing seat 22 close to the heat sink component is an inclined surface, and the distance from the inclined surface to the bottom wall of the pressing seat 22 decreases in the direction away from the corresponding first pneumatic rod 231.

[0039] Refer to Figure 2 and Figure 4 , On the longer fixed limit seat 211 in each set of tooling units 2, an air delivery cylinder 4 is fixedly arranged. The length direction of the air delivery cylinder 4 is parallel to the length direction of the corresponding fixed limit seat 211. A plurality of nozzles 5 are communicated on the side of the air delivery cylinder 4 close to the corresponding clamping limit seat 212. The plurality of nozzles 5 are arranged at intervals along the length direction of the air delivery cylinder 4. The side of the air delivery cylinder 4 away from the nozzles 5 is communicated with an adjusting cylinder 6 through a connecting pipe 29. The length direction of the adjusting cylinder 6 is parallel to the length direction of the corresponding air delivery cylinder 4. The connecting pipe 29 is located in the middle of the adjusting cylinder 6.

[0040] Refer to Figure 4 andFigure 5 Both ends of the adjusting cylinder 6 are internally provided with piston blocks 7 in a sliding manner. The connecting pipe 29 is located between the two piston blocks 7. A sliding rod 8 is fixed on the side of the piston block 7 away from the connecting pipe 29. The sliding rod 8 slidably penetrates through the corresponding end of the adjusting cylinder 6. The sliding direction of the sliding rod 8 is parallel to the length direction of the adjusting cylinder 6. A guiding strip is arranged between the sliding rod 8 and the adjusting cylinder 6 to guide the sliding, so that the sliding rod 8 will not rotate. An elastic member for driving the sliding rod 8 to reset is arranged in the adjusting cylinder 6. A transmission assembly is arranged on the placing table 1. The transmission assembly is used to drive the sliding rod 8 to slide towards the direction close to the connecting pipe 29 when the first pneumatic rod 231 extends or retracts.

[0041] Refer to Figure 4 and Figure 5 Specifically, for the convenience of driving the sliding rod 8 to reset, the elastic member includes a second spring 24 sleeved on the sliding rod 8. One end of the second spring 24 is fixed at the end of the sliding rod 8 close to the corresponding piston block 7, and the other end is fixed on the inner wall of the adjusting cylinder 6. In other embodiments, the second spring 24 can be replaced by an arc-shaped elastic rod.

[0042] Refer to Figure 5 and Figure 6 For the convenience of driving the sliding rod 8 to slide towards the direction close to the connecting pipe 29 when the first pneumatic rod 231 extends or retracts, the transmission assembly includes a rotating column 9, an abutting rod 10 and a rotating member. The rotating column 9 is rotatably sleeved on the sliding rod 8. The rotation axis of the rotating column 9 is parallel to the sliding direction of the sliding rod 8. An abutting inclined surface is arranged on the side of the rotating column 9 away from the sliding rod 8. A connecting plate 25 is fixed on the moving end of the first pneumatic rod 231 on the side close to the rotating column 9. The abutting rod 10 is fixed on the corresponding connecting plate 25. The abutting rod 10 is arranged in the horizontal direction and extends towards the direction of the corresponding rotating column 9. The abutting rod 10 is used for relatively sliding and abutting against the abutting inclined surface on the rotating column 9. Specifically, the end of the abutting rod 10 close to the corresponding rotating column 9 can be set as a convex arc surface. The rotating member is arranged on the placing table 1. The rotating member is used to adjust the rotation of the rotating column 9.

[0043] Refer to Figure 5 and Figure 6, for facilitating the rotation of the rotating column 9, the rotating member includes a support plate 11, a rotating ring 12, a torsion spring 13, a fixing rod 14, a locking rod 15, a first spring 16, a first magnet, a second magnet 17 and a connecting rod 18. The support plates 11 correspond to the rotating columns 9 one by one. The support plates 11 are fixed on the placing table 1, and the plane where the support plates 11 are located is perpendicular to the rotation axis of the corresponding rotating column 9. Through holes 19 for the corresponding rotating columns 9 to pass through are formed in the support plates 11; the rotating rings 12 are rotatably arranged on the support plates 11. The rotating rings 12 are located on one side of the corresponding support plates 11 close to the abutting rods 10. The rotating rings 12 are concentric with the rotating columns 9. The outer wall of the rotating column 9 is slidably connected with the rotating ring 12. Specifically, a guiding convex block is fixed on the inner wall of the rotating ring 12, and a guiding groove is formed on the outer wall of the rotating column 9. The guiding convex block is slidably matched with the guiding groove, so that the rotating ring 12 and the corresponding rotating column 9 can slide relative to each other but cannot rotate relative to each other.

[0044] Referring to Figure 5 and Figure 6 , the fixing rod 14 is fixed on the connecting plate 25 close to one side. The fixing rod 14 is located above the abutting rod 10 on the corresponding connecting plate 25. The torsion spring 13 is sleeved outside the rotating ring 12. One end of the inner ring of the torsion spring 13 is fixed on the outer wall of the corresponding rotating ring 12, and one end of the outer ring is fixed on the fixing rod 14. When the first pneumatic rod 231 drives the fixing rod 14 to move up and down, the fixing rod 14 can drive one end of the outer ring of the torsion spring 13 to change its displacement. When the fixing rod 14 moves from the state where the pressing seat 22 (referring to Figure 2 ) presses the heat sink component to the state where the pressing seat 22 releases the heat sink component or moves from the state where the pressing seat 22 (referring to Figure 2 ) releases the heat sink component to the state where the pressing seat 22 presses the heat sink component, the fixing rod 14 drives one end of the torsion spring 13 to change its displacement, and the torsion spring 13 drives the rotating ring 12 to rotate by an angle of 180 degrees.

[0045] Referring to Figure 5 and Figure 6 , two U-shaped fixing frames 26 are fixed on one side of the support plate 11 close to the corresponding connecting plate 25. The two fixing frames 26 are aligned with the upper and lower sides of the rotating ring 12. The locking rods 15 correspond to the fixing frames 26 one by one, so that the two locking rods 15 are aligned with the upper and lower sides of the rotating ring 12. The locking rods 15 are slidably inserted through the corresponding fixing frames 26. The sliding direction of the locking rods 15 is parallel to the sliding direction of the sliding rod 8. The locking rods 15 are used to abut against the rotating ring 12 to restrict the rotation of the rotating ring 12. Specifically, a locking block 27 is fixed at one end of the locking rod 15 close to the corresponding rotating ring 12. A toothed ring 28 is coaxially fixed on the rotating ring 12. The locking block 27 is used to engage with the toothed ring 28 to restrict the rotation of the rotating ring 12. In other embodiments, the locking block 27 and the toothed ring 28 can be replaced by friction plates fixed on the locking rods 15. By abutting the friction plates against the rotating ring 12, the rotation of the rotating ring 12 can also be restricted.

[0046] Referring to Figure 5 and Figure 6 A first spring 16 is sleeved on a locking rod 15. One end of the first spring 16 is fixed on a corresponding fixed frame 26, and the other end is fixed on a side of the locking rod 15 away from a rotating ring 12. The first spring 16 is used to pull the locking rod 15 to slide towards the direction close to the rotating ring 12. A first magnet is embedded on a side of an abutting rod 10 close to a corresponding rotating column 9, and a second magnet 17 is fixed at one end of the locking rod 15 away from the rotating ring 12. When a moving end of a first pneumatic rod 231 moves downward to release a pressing seat 22 from a heat sink component, the first magnet on the abutting rod 10 aligns with the locking rod 15 located below the rotating ring 12; when the moving end of the first pneumatic rod 231 moves upward to press the pressing seat 22 against the heat sink component, the first magnet on the abutting rod 10 aligns with the locking rod 15 located above the rotating ring 12. The first magnet is used to adsorb the second magnet 17 to drive the locking rod 15 to slide away from the rotating ring 12. The adsorption force between the first magnet and the second magnet 17 is greater than twice the elastic force of the first spring 16. A connecting rod 18 is U-shaped, and the connecting rod 18 fixedly connects the upper and lower locking rods 15 aligned with the same rotating ring 12.

[0047] In the initial state, the moving end of the first pneumatic rod 231 is in the retracted state. At this time, the abutting rod 10 on the connecting plate 25 is aligned with the locking rod 15 below the rotating ring 12. The first magnet is adsorbed and matched with the second magnet 17 on the aligned locking rod 15, so that the locking block 27 is disengaged from the corresponding gear ring 28, and the abutting slope of the rotating column 9 is inclined upward in the direction away from the connecting pipe 29, and the coil spring 13 is in the natural state. Then, the moving end of the first pneumatic rod 231 moves upward to press the upper heat sink component by the pressing seat 22. The moving end of the first pneumatic rod 231 drives the abutting rod 10 and the fixing rod 14 to move upward through the connecting plate 25, so that the first magnet on the abutting rod 10 is disengaged from the second magnet 17. Under the pulling force of the first spring 16, the locking rod 15 drives the locking block 27 to approach the rotating ring 12, so that the locking block 27 meshes with the corresponding gear ring 28, realizing the limitation of the rotating ring 12. As the fixing rod 14 moves upward, the fixing rod 14 gradually pulls the coil spring 13, making the coil spring 13 tighten. Since the rotating ring 12 cannot rotate, the coil spring 13 deforms. The abutting rod 10 and the abutting slope of the corresponding rotating column 9 slide relative to each other. By abutting against the abutting slope, the rotating column 9 and the sliding rod 8 slide toward the connecting pipe 29, so that the piston block 7 approaches the connecting pipe 29, and the second spring 24 is stretched. The piston block 7 pushes out the gas, so that the nozzle 5 blows air onto the surface of the heat sink component, which helps to blow off the impurities on the surface of the heat sink component and improve the welding quality. Then, the abutting rod 10 is disengaged from the abutting slope of the rotating column 9. As the abutting force decreases, the sliding rod 8 moves in the direction away from the connecting pipe 29 under the pulling force of the second spring 24 for resetting. Then, the abutting rod 10 moves to align with the locking rod 15 above the rotating ring 12. Through the adsorption force between the first magnet and the aligned second magnet 17, the locking block 27 is disengaged from the gear ring 28. At this time, since the coil spring 13 has deformed, the coil spring 13 drives the rotating ring 12 to rotate. The rotation of the rotating ring 12 drives the corresponding rotating column 9 to rotate, so that the rotating column 9 rotates 180 degrees. At this time, the abutting slope on the rotating column 9 is inclined downward on the side away from the sliding rod 8, and the coil spring 13 returns to the natural state again.

[0048] When the moving end of the first pneumatic rod 231 moves downward to release the heat sink component located above when the pressing seat 22 is welding, the moving end of the first pneumatic rod 231 drives the abutting rod 10 and the fixed rod 14 to move downward through the connecting plate 25, so that the first magnet on the abutting rod 10 is separated from the second magnet 17. Under the pulling of the first spring 16, the locking rod 15 drives the locking block 27 to approach the rotating ring 12, so that the locking block 27 meshes with the corresponding toothed ring 28 to realize the limitation of the rotating ring 12; As the fixed rod 14 moves downward, the fixed rod 14 drives the coil spring 13, so that the coil spring 13 becomes loose. Since the rotating ring 12 cannot rotate, the coil spring 13 deforms, and the abutting inclined surface of the abutting rod 10 and the corresponding rotating column 9 continues to slide relatively. The rotating column 9 and the sliding rod 8 are pushed to slide in the direction close to the connecting pipe 29 through the abutting inclined surface, so that the piston block 7 pushes out the gas, and the nozzle 5 blows air to the surface of the heat sink component, which helps to cool the welding position and improve the welding quality. Then the abutting inclined surface of the abutting rod 10 and the rotating column 9 is separated. As the abutting force decreases, the sliding rod 8 moves in the direction away from the connecting pipe 29 under the pulling force of the second spring 24 to reset. Then the abutting rod 10 moves to align with the locking rod 15 on the lower side of the rotating ring 12. Through the adsorption force between the first magnet and the aligned second magnet 17, the locking block 27 is separated from the toothed ring 28. At this time, since the coil spring 13 is deformed, the coil spring 13 drives the rotating ring 12 to rotate. The rotation of the rotating ring 12 drives the corresponding rotating column 9 to rotate, so that the rotating column 9 rotates 180 degrees, and the abutting inclined surface on the rotating column 9 is inclined upward, and the coil spring 13 returns to the natural state again.

[0049] The implementation principle of the embodiment of the present invention is as follows: When in use, first place the two heat sink components that are vertically fitted on the placing table 1. The heat sink components are located between the clamping and limiting seat 212 and the corresponding fixed limiting seat 211. The two adjacent sides of the heat sink component located below are respectively abutted against the two fixed limiting seats 211 of the tooling unit 2. Then start the second pneumatic rod 2131 to drive the single-sided inclined block 2132 to move downward. Since the inclined surface of the single-sided inclined block 2132 is slidably matched with the corresponding clamping and limiting seat 212, during the downward movement of the single-sided inclined block 2132, the clamping and limiting seat 212 is pushed to slide in the direction close to the corresponding fixed limiting seat 211 through the inclined surface, so that the clamping and limiting seat 212 presses the heat sink component located below during welding against the corresponding fixed limiting seat 211.

[0050] Then, the first pneumatic rod 231 is activated, and the moving end of the first pneumatic rod 231 moves upward. The moving end of the first pneumatic rod 231 drives the side of the pressing seat 22 away from the heat sink component to move upward. With the cooperation of the connecting rod 232, the side of the pressing seat 22 close to the heat sink component rotates downward to the horizontal state, thereby realizing the pressing and fixing of the heat sink component located above by the pressing seat 22. During the upward movement of the moving end of the first pneumatic rod 231, the transmission component drives the sliding rod 8 to drive the corresponding piston block 7 to slide in the direction of the connecting pipe 29. The air ejected from the nozzle 5 helps to blow off the impurities on the surface of the heat sink component, improving the welding quality. Until the moving end of the first pneumatic rod 231 moves to the upper limit position, the abutting rod 10 disengages from the sliding rod 8, and the sliding rod 8 is reset under the action of the second spring 24.

[0051] Then, the joints of the two heat sink components that are fitted up and down are spot-welded by the friction stir welding head. Then, the first pneumatic rod 231 is activated, and the moving end of the first pneumatic rod 231 moves downward to pull the side of the pressing seat 22 away from the heat sink component to rotate downward. With the cooperation of the connecting rod 232, one end of the pressing seat 22 abutting against the heat sink component tilts upward, and the pressing seat 22 disengages from the heat sink component, enabling the quick release of the heat sink component for making way. At the same time, during the downward movement of the moving end of the first pneumatic rod 231, the transmission component drives the sliding rod 8 to drive the corresponding piston block 7 to slide in the direction close to the connecting pipe 29 again. The air ejected from the nozzle 5 helps to cool the spot-welded position, improving the welding quality. Finally, the joints of the two heat sink components that are fitted up and down can be welded circumferentially by the friction stir welding head. Compared with the threaded fixing method, the method of fixing or releasing the heat sink component by pneumatic drive is simple and fast, saving operation time and helping to improve the welding efficiency of the heat sink component.

[0052] After the welding of the two heat sink components is completed, the second pneumatic rod 2131 is activated to drive the single-sided inclined block 2132 to move upward, so that the single-sided inclined block 2132 pulls the clamping and limiting seat 212 to slide away from the corresponding fixed limiting seat 211 through its own inclined surface, thereby helping to release the heat sink component located below during welding and facilitating the removal of the heat sink component, greatly accelerating the installation and disassembly speed of the heat sink component.

[0053] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A friction stir welding tool, characterized in that: The invention comprises a placing table (1) and a tooling unit (2) arranged on the placing table (1), wherein the tooling unit (2) comprises a horizontal clamping assembly (21), a pressure seat (22) and a pneumatic connecting rod assembly (23), wherein the horizontal clamping assembly (21) is used to clamp and fix a heat sink component located below, the pressure seat (22) is movably arranged on the placing table (1), the pressure seat (22) is used to press the heat sink component located above onto the heat sink component located below, the pneumatic connecting rod assembly (23) is used to adjust the pressure seat (22) to press or release the heat sink component located above, and the pneumatic connecting rod assembly (23) comprises a first pneumatic rod (231) arranged on the placing table (1) and a connecting rod (231) hinged on the placing table (1). 32), the horizontal clamping assembly (21) comprises a fixed limit seat (211) arranged on the placement platform (1), a clamping limit seat (212) slidably arranged on the placement platform (1) and a pneumatic adjustment member (213) arranged on the placement platform (1), the fixed limit seat (211) is provided with a gas cylinder (4), a side of the gas cylinder (4) close to the clamping limit seat (212) is connected to a plurality of nozzles (5), a side of the gas cylinder (4) away from the nozzles (5) is connected to an adjustment cylinder (6) through a connecting pipe (29), a piston block (7) is slidably arranged in the adjustment cylinder (6), a sliding rod (8) is provided on a side of the piston block (7) away from the connecting pipe (29), and the sliding rod (8) is slidably penetrated in the adjustment cylinder (6), an elastic member for driving the sliding rod (8) to reset is arranged in the adjusting cylinder (6), a transmission assembly is arranged on the placing platform (1), and the transmission assembly is used to drive the sliding rod (8) to slide in the direction close to the connecting pipe (29) when the first pneumatic rod (231) is extended or retracted, and the transmission assembly includes a rotating column (9) rotatably sleeved on the sliding rod (8), an abutment rod (10) arranged on the moving end of the first pneumatic rod (231) close to one side, and a rotating member arranged on the placing platform (1), the rotating axis of the rotating column (9) is parallel to the sliding direction of the sliding rod (8), the side of the rotating column (9) away from the sliding rod (8) is provided with an abutment inclined surface, and the abutment rod (10) is used to abut with the rotating column (9) ) on the support plate (1), the support plate (11) is provided with a through hole (19) for the support plate (11) to allow the support plate (11) to pass through, the support plate (11) is provided with a through hole (19) for the support plate (11) to pass through, the support plate (11) is provided with a support plate (11), ..., the support plate (11) is provided, the support plate (11) is provided, the support plate (11) is provided, the support plate (The coil spring (13) is sleeved outside the rotating ring (12), one end of the inner ring of the coil spring (13) is arranged on the rotating ring (12), and one end of the outer ring is arranged on the fixed rod (14). Two locking rods (15) are provided, and the two locking rods (15) are aligned with the upper and lower sides of the rotating ring (12). The locking rod (15) is slidably penetrated on the support plate (11), and the sliding direction of the locking rod (15) is parallel to the sliding direction of the sliding rod (8). The locking rod (15) is used to abut against the rotating ring (12) to limit the rotation of the rotating ring (12). The first spring (16) is sleeved on the locking rod (15), and one end of the first spring (16) One end is arranged on the support plate (11), and the other end is arranged on the locking rod (15); the first spring (16) is used to pull the locking rod (15) to slide in the direction close to the rotating ring (12); the first magnet is arranged on the abutting rod (10), and the second magnet (17) is arranged on the locking rod (15); the first magnet is used to absorb the second magnet (17) to drive the locking rod (15) to slide in the direction away from the rotating ring (12); the absorption force between the first magnet and the second magnet (17) is greater than the elastic force of the first spring (16); the connecting rod (18) connects the locking rods (15) aligned with the upper and lower sides of the rotating ring (12).

2. A friction stir welding tool according to claim 1, characterized in that: The extension direction of the first pneumatic rod (231) is arranged along the vertical direction, the pressure seat (22) is hinged on the movable end of the first pneumatic rod (231), the hinge axis of the pressure seat (22) is perpendicular to the extension direction of the first pneumatic rod (231), the hinge axis of the connecting rod (232) is parallel to the hinge axis of the pressure seat (22), the connecting rod (232) is located below the pressure seat (22), the connecting rod (232) is located on the side of the first pneumatic rod (231) close to the heat sink component, the connecting rod (232) is hinged to the pressure seat (22) on the side away from the placement table (1), and when the pressure seat (22) is in a horizontal state, the connecting rod (232) is in a vertical state.

3. A friction stir welding tool according to claim 2, characterized in that: The fixed limit seat (211) and the clamping limit seat (212) are arranged opposite to each other, the sliding direction of the clamping limit seat (212) is arranged in the horizontal direction, and the pneumatic adjustment member (213) is used to adjust the clamping limit seat (212) to slide in a direction close to or away from the fixed limit seat (211).

4. A friction stir welding tool according to claim 3, characterized in that: The pneumatic adjustment member (213) comprises a second pneumatic rod (2131) arranged on the placement table (1) and a single-sided inclined block (2132) arranged on the movable end of the second pneumatic rod (2131); the extension direction of the second pneumatic rod (2131) is arranged along the vertical direction; the single-sided inclined block (2132) is located on a side of the clamping limit seat (212) away from the fixed limit seat (211); a side of the single-sided inclined block (2132) close to the clamping limit seat (212) is an inclined surface, and the inclined surface is inclined upward toward the side close to the clamping limit seat (212); the clamping limit seat (212) and the inclined surface of the single-sided inclined block (2132) are slidably matched.

5. A friction stir welding tool according to claim 4, characterized in that: A guide block (3) is provided on the placement table (1), and the guide block (3) is located on a side of the single-sided inclined block (2132) away from the clamping limit seat (212), and a side of the single-sided inclined block (2132) away from the clamping limit seat (212) is slidably matched with the guide block (3).

6. A friction stir welding tool according to claim 3, characterized in that: The horizontal clamping components (21) in the tooling unit (2) are provided in two groups, and the arrangement direction of the fixed limit seats (211) and the clamping limit seats (212) in one group of the horizontal clamping components (21) is perpendicular to the arrangement direction of the fixed limit seats (211) and the clamping limit seats (212) in the other group of the horizontal clamping components (21).

7. A friction stir welding tool according to any one of claims 1 to 6, characterized in that: Four pressure seats (22) are provided, the pneumatic connecting rod assemblies (23) correspond to the pressure seats (22) one by one, and the four pressure seats (22) are located at the four corners of the heat sink component.

Images