Friction stir welding tool

Abstract

The invention relates to a friction stir welding tool, and belongs to the technical field of cooling fin machining, the friction stir welding tool comprises a placing table and a tool unit arranged on the placing table, and the tool unit comprises a horizontal clamping assembly, a pressing seat and a pneumatic connecting rod assembly; the horizontal clamping assembly is used for pressing the cooling fin component located on the upper portion to the cooling fin component located on the lower portion, the pressing base is movably arranged on the containing table and used for pressing the cooling fin component located on the upper portion, and the starting connecting rod assembly is used for adjusting the pressing base to press or loosen the cooling fin component located on the upper portion. The welding device has the advantage that the welding efficiency of the cooling fin component is improved.

Description

Technical Field

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

[0002] A heat sink is a heat dissipation component used in electronic equipment. The processing of heat sinks is mainly done through turning, grinding, tooth cutting and other processes. For some complex forms of heat sinks, welding is also required to make a combined heat dissipation structure.

[0003] At present, stir friction welding is usually used to weld the upper and lower parts of the heat sink together, wherein the upper surface of the heat sink component located at the bottom is provided with a groove, and the upper heat sink component is used to be embedded in the groove. During operation, the two heat sink components embedded together are first placed on the tooling, and then clamped and fixed by the tooling so that the upper heat sink component is pressed tightly against the lower heat sink component, and then the welding head of the stir friction welding is used to spot weld the embedded position of the two heat sink components, and then the tooling is released to press the upper heat sink component to make way for the welding head, and then the welding head is used to weld along the circumference of the embedded position of the two heat sink components.

[0004] Since the tooling is mostly fixed by threads, it is time-consuming and the welding efficiency is low when adjusting the tooling to lock or make way for the heat sink component. Summary of the invention

[0005] In order to help improve the welding efficiency of heat sink components, the present invention provides a friction stir welding tool.

[0006] The friction stir welding tool provided by the present invention adopts the following technical solution: A friction stir welding tool comprises a placement table and a tool unit arranged on the placement table, the tool unit comprises a horizontal clamping assembly, a pressure 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 pressure seat is movably arranged on the placement table, the pressure seat is used to press the heat sink component located above, and the start connecting rod assembly is used to adjust the pressure seat to press or release the heat sink component located above.

[0007] Preferably, the pneumatic connecting rod assembly includes a first pneumatic rod arranged on a placing table and a connecting rod hinged on the placing table, the extension direction of the first pneumatic rod is arranged in a vertical direction, the pressure seat is hinged on the movable end of the first pneumatic rod, the hinge axis of the pressure seat is perpendicular to the extension direction of the first pneumatic rod, the hinge axis of the connecting rod is parallel to the hinge axis of the pressure seat, the connecting rod is located below the pressure seat, the connecting rod is located on the side of the first pneumatic rod close to the heat sink component, the side of the connecting rod away from the placing table is hinged to the pressure seat, and when the pressure seat is in a horizontal state, the connecting rod is in a vertical state.

[0008] Preferably, the horizontal clamping assembly includes a fixed limit seat arranged on the placing table, a clamping limit seat slidably arranged on the placing table and a pneumatic adjustment member arranged on the placing table, the fixed limit seat is arranged opposite to the clamping limit seat, the sliding direction of the clamping limit seat is arranged along the horizontal direction, and the pneumatic adjustment member is used to adjust the clamping limit seat to slide towards or away from the fixed limit seat.

[0009] Preferably, the pneumatic adjustment member includes a second pneumatic rod arranged on the placement table and a single-sided inclined block arranged on the movable end of the second pneumatic rod, the extension direction of the second pneumatic rod is arranged in the vertical direction, the single-sided inclined block is located on the side of the clamping limit seat away from the fixed limit seat, the side of the single-sided inclined block close to the clamping limit seat is an inclined surface, the inclined surface is inclined upward toward the side close to the clamping limit seat, and the clamping limit seat is slidably matched with the inclined surface of the single-sided inclined block.

[0010] Preferably, a guide block is provided on the placement table, and the guide block is located on a side of the unilateral inclined block away from the clamping limit seat, and a side of the unilateral inclined block away from the clamping limit seat is slidably matched with the guide block.

[0011] Preferably, two groups of horizontal clamping assemblies are provided in the tooling unit, and the arrangement direction of the fixed limit seats and the clamping limit seats in one group of horizontal clamping assemblies is perpendicular to the arrangement direction of the fixed limit seats and the clamping limit seats in the other group of horizontal clamping assemblies.

[0012] Preferably, four pressure seats are provided, the pneumatic connecting rod assemblies correspond to the pressure seats one by one, and the four pressure seats are located at the four corners of the heat sink component.

[0013] Preferably, an air cylinder is provided on the fixed limit seat, and a side of the air cylinder close to the clamping limit seat is connected to a plurality of nozzles, and a side of the air cylinder away from the nozzle is connected to an adjusting cylinder through a connecting pipe, a piston block is slidably provided in the adjusting cylinder, a sliding rod is provided on the side of the piston block away from the connecting pipe, the sliding rod is slidably passed through the adjusting cylinder, an elastic part for driving the sliding rod to reset is provided in the adjusting cylinder, and a transmission assembly is provided on the placement table, and the transmission assembly is used to drive the sliding rod to slide in a direction close to the connecting pipe when the first pneumatic rod is extended or retracted.

[0014] Preferably, the transmission assembly includes a rotating column rotatably mounted on the sliding rod, an abutment rod arranged on the movable end of the first pneumatic rod close to one side, and a rotating member arranged on the placement table, the rotating axis of the rotating column is parallel to the sliding direction of the sliding rod, and an abutment slope is arranged on the side of the rotating column away from the sliding rod, the abutment rod is used for relative sliding abutment with the abutment slope on the rotating column, and the rotating member is used for adjusting the rotation of the rotating column.

[0015] Preferably, the rotating member includes a support plate, a swivel, a coil spring, a fixed rod, a locking rod, a first spring, a first magnet, a second magnet and a connecting rod, the support plate is arranged on a placing table, a through hole for a rotating column to pass through is opened on the support plate, the swivel is rotatably arranged on the support plate, the swivel is concentrically arranged with the rotating column, the outer wall of the rotating column is slidably connected with the swivel, the fixing rod is arranged on a first pneumatic rod adjacent to the swivel, the coil spring is sleeved outside the swivel, one end of the inner ring of the coil spring is arranged on the swivel, and one end of the outer ring is arranged on the fixing rod, two locking rods are arranged, the two locking rods are aligned with the upper and lower sides of the swivel, and the locking rod is slidably penetrated On the support plate, the sliding direction of the locking rod is parallel to the sliding direction of the sliding rod, and the locking rod is used to abut the swivel to limit the rotation of the swivel. The first spring is sleeved on the locking rod, one end of the first spring is set on the support plate, and the other end is set on the locking rod. The first spring is used to pull the locking rod to slide in the direction close to the swivel, the first magnet is set on the abutment rod, and the second magnet is set on the locking rod. The first magnet is used to absorb the second magnet to drive the locking rod to slide in the direction away from the swivel, and the adsorption force between the first magnet and the second magnet is greater than the elastic force of the first spring, and the connecting rod will connect the locking rods on the upper and lower sides of the swivel.

[0016] In summary, the present invention includes the following beneficial technical effects: When in use, first place the two heat sink components that have been embedded in each other up and down on the placement table, then clamp and fix the heat sink component at the bottom through the horizontal clamping assembly, and then adjust the pressure seat through the pneumatic connecting rod assembly to press the heat sink component at the top onto the heat sink component at the bottom, and then spot weld the embedded parts of the two heat sink components embedded in each other up and down through the welding head of the stir friction welding, and then adjust the pressure seat through the pneumatic connecting rod assembly to loosen the heat sink component at the top to make way for the welding head of the friction welding, and then the embedded parts of the two heat sink components embedded in each other up and down can be welded circumferentially through the welding head of the stir friction welding. Compared with the threaded fixing method, the state of the pressure seat is adjusted by the pneumatic connecting rod assembly in a pneumatic manner, which is simple and quick, saves operation time, and helps to improve the welding efficiency of the heat sink components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0018] Figure 2 It is a cross-sectional view of the overall structure of a single tooling unit in an embodiment of the present invention.

[0019] Figure 3 It is a schematic diagram of the overall structure of the horizontal clamping assembly in an embodiment of the present invention.

[0020] Figure 4 Schematic diagram of the overall structure of the transmission assembly in an embodiment of the present invention.

[0021] Figure 5 It is a sectional view of the overall structure of the regulating cylinder in an embodiment of the present invention.

[0022] Figure 6 yes Figure 5 Enlarged view of part A.

[0023] Explanation of the accompanying drawings: 1. placing table; 2. tooling unit; 21. horizontal clamping assembly; 211. fixed limit seat; 212. clamping limit seat; 213. pneumatic adjustment member; 2131. second pneumatic rod; 2132. single-sided bevel block; 22. pressure seat; 23. pneumatic connecting rod assembly; 231. first pneumatic rod; 232. connecting rod; 3. guide block; 4. air cylinder; 5. nozzle; 6. adjusting cylinder; 7. piston block; 8. sliding rod; 9. rotating column; 10. abutting rod; 11. support plate; 12. swivel; 13. coil 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 DESCRIPTION

[0024] The following combination Figure 1-Figure 6 The present invention is described in further detail.

[0025] The embodiment of the present invention discloses a friction stir welding tool. 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 the 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 that need to be welded. Specifically, the number of tooling units 2 can be set as needed. In an embodiment of the present invention, two groups of tooling units 2 are arranged on the placement table 1.

[0026] Reference Figure 1 and Figure 2 Each set of tooling units 2 includes a horizontal clamping assembly 21, a pressure seat 22 and a pneumatic connecting rod 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 pressure 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 connecting rod assembly 23 is arranged on the placement table 1, and is used to adjust the pressure seat 22 to press or loosen the heat sink component located above.

[0027] When in use, first place the two heat sink components that have been embedded in each other up and down on the required position of the placement table 1, then clamp and fix the heat sink component located at the bottom through the horizontal clamping assembly 21, and then adjust the pressure seat 22 through the pneumatic connecting rod assembly 23 to press the heat sink component located at the top onto the heat sink component located at the bottom, and then spot weld the embedded parts of the two heat sink components embedded in each other up and down through the welding head of the stir friction welding, and then adjust the pressure seat 22 through the pneumatic connecting rod assembly 23 to loosen the heat sink component located at the top to make way for the welding head of the friction welding, and then the two heat sink components embedded in each other up and down can be welded circumferentially through the welding head of the stir friction welding. Compared with the threaded fixing method, the state of the pressure seat 22 is adjusted by the pneumatic connecting rod assembly 23 in a pneumatic manner, which is simple and quick, saves operation time, and helps to improve the welding efficiency of the heat sink components.

[0028] Reference Figure 2 and Figure 3In order 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 adjustment member 213. The fixed limit seat 211 is fixed to the placement table 1 by bolts. The placement table 1 is provided with a sliding groove 20. The clamping limit seat 212 is slidably set 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 arranged opposite to each other. 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 adjustment member 213 is set on the placement table 1. The pneumatic adjustment member 213 is used to adjust the clamping limit seat 212 to slide in the direction close to or away from the fixed limit seat 211.

[0029] Reference Figure 2 and Figure 3 In order to facilitate the adjustment of the clamping limit seat 212 to slide towards or away from the fixed limit seat 211, the pneumatic adjustment member 213 includes a second pneumatic rod 2131 and a single-sided inclined block 2132. The second pneumatic rod 2131 is fixedly embedded in the placement table 1, and the extension direction of the second pneumatic rod 2131 is set in the vertical direction. The single-sided inclined block 2132 is fixed on the movable end of the second pneumatic rod 2131. The single-sided inclined block 2132 is slidably penetrated in the sliding groove 20, and the single-sided inclined block 2132 is located on the side of the clamping limit seat 212 away from the fixed limit seat 211. The side of the single-sided inclined block 2132 close to the clamping limit seat 212 is an inclined surface, and the inclined surface close to the side of the clamping limit seat 212 is inclined upward, and the clamping limit seat 212 and the inclined surface of the single-sided inclined block 2132 are slidably matched.

[0030] When it is necessary to drive the clamping limit seat 212 to slide in the direction close to the fixed limit seat 211, the second pneumatic rod 2131 is started to drive the single-sided inclined block 2132 to move downward. Since the inclined surface of the single-sided inclined block 2132 slides with the clamping limit seat 212, the single-sided inclined block 2132 slides in the direction close to the fixed limit seat 211 during the downward movement, 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 the direction away from the fixed limit seat 211, the second pneumatic rod 2131 is started to drive the single-sided inclined block 2132 to move upward. At this time, the single-sided inclined block 2132 pulls the clamping limit seat 212 to slide in the direction away from the fixed limit seat 211 during the upward movement, which helps to loosen the clamping limit seat 212 and facilitate the removal of the heat sink component.

[0031] Reference Figure 2 and Figure 3In order to help guide the sliding of the single-sided inclined block 2132, a guide block 3 is fixedly arranged in the sliding groove 20. The guide block 3 is located on the side of the single-sided inclined block 2132 away from the clamping limit seat 212, and the side plane of the single-sided inclined block 2132 away from the clamping limit seat 212 is slidably matched with the guide block 3.

[0032] Reference Figure 1 and Figure 2 , each tooling unit 2 is provided with two groups of horizontal clamping components 21, wherein the arrangement direction of the fixed limit seat 211 and the clamping limit seat 212 in one group of horizontal clamping components 21 is perpendicular to the arrangement direction of the fixed limit seat 211 and the clamping limit seat 212 in the other group of horizontal clamping components 21, and the sliding groove 20 corresponds to the clamping limit seat 212 one by one. In order to adapt to the rectangular heat sink component, in the embodiment of the present invention, the length of the fixed limit seat 211 of one group of horizontal clamping components 21 is greater than the length of the fixed limit seat 211 in the other group of horizontal clamping components 21, so that the fixed limit seat 211 and the clamping limit seat 212 in the two tooling units 2 are located on the four sides of the rectangular heat sink component. Designing the horizontal clamping components 21 of each group of tooling units 2 into two groups helps to improve the clamping and fixing effect of the heat sink component.

[0033] Reference Figure 1 and Figure 2 In order to improve the pressing effect of the heat sink component located at the top during welding, a plurality of pressure seats 22 are provided. In the embodiment of the present invention, four pressure seats 22 are provided, and the pneumatic connecting rod assemblies 23 correspond to the pressure seats 22 one by one. The four pressure seats 22 are located at the four corners of the heat sink component, so that the pressure seats 22 are located between adjacent fixed limit seats 211, between adjacent clamping limit seats 212, or between adjacent fixed limit seats 211 and clamping limit seats 212.

[0034] Reference Figure 1 and Figure 2In order to facilitate the adjustment of the pressure seat 22 to tighten or loosen the heat sink component located above during welding, the pneumatic connecting rod assembly 23 includes a first pneumatic rod 231 and a connecting rod 232. The first pneumatic rod 231 is fixedly embedded in the placement table 1, and the extension direction of the first pneumatic rod 231 is set in the vertical direction. The side of the pressure seat 22 away from the heat sink component is hinged on the movable end of the corresponding 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 connecting rod 232 is located on the side of the corresponding first pneumatic rod 231 close to the heat sink component. One end of the connecting rod 232 is hinged on the placement table 1, and the other end is hinged at the middle part of the pressure seat 22. The hinge axis of the connecting rod 232 is parallel to the hinge axis of the corresponding pressure seat 22. The connecting rod 232 is located below the corresponding pressure seat 22. When the pressure seat 22 is in a horizontal state, the connecting rod 232 is in a vertical state. In order to facilitate the operation of the operator, the placement table 1 is provided with operating control levers for controlling the operation of the first pneumatic rod 231 and the second pneumatic rod 2131 .

[0035] When it is necessary to adjust the pressure seat 22 to press on the heat sink component located above during welding, start the first pneumatic rod 231, which drives the pressure seat 22 to move up away from the side of the heat sink component, and with the cooperation of the corresponding connecting rod 232, the side of the pressure seat 22 close to the heat sink component rotates downward to a horizontal state, thereby achieving the pressure and fixation of the heat sink component located above during welding by the pressure seat 22; when it is necessary to loosen the heat sink component, start the first pneumatic rod 231, which moves downward to pull the side of the pressure seat 22 away from the heat sink component to rotate downward, so that with the cooperation of the connecting rod 232, the end of the pressure seat 22 abutting against the heat sink component is tilted upward, thereby disengaging from the heat sink component located above during welding, thereby achieving rapid fixation or loosening of the heat sink component, which helps to improve welding efficiency.

[0036] Reference Figure 2 To help save materials, the upper surface of the press seat 22 near one end of the heat sink component is an inclined surface, and the distance from the inclined surface to the bottom wall of the press seat 22 decreases in the direction away from the corresponding first pneumatic rod 231.

[0037] Reference Figure 2 and Figure 4 A gas cylinder 4 is fixedly arranged on the fixed limit seat 211 with a larger length in each set of tooling units 2. The length direction of the gas cylinder 4 is parallel to the length direction of the corresponding fixed limit seat 211. The side of the gas cylinder 4 close to the corresponding clamping limit seat 212 is connected with multiple nozzles 5. The multiple nozzles 5 are arranged at intervals along the length direction of the gas cylinder 4. The side of the gas cylinder 4 away from the nozzle 5 is connected 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 gas cylinder 4. The connecting pipe 29 is located in the middle of the adjusting cylinder 6.

[0038] Reference Figure 4 and Figure 5 , piston blocks 7 are slidably arranged at both ends of the adjusting cylinder 6, the connecting tube 29 is located between the two piston blocks 7, a sliding rod 8 is fixed to the side of the piston block 7 away from the connecting tube 29, the sliding rod 8 is slidably penetrated through the end of the corresponding adjusting cylinder 6, the sliding direction of the sliding rod 8 is parallel to the length direction of the adjusting cylinder 6, and a guide bar is arranged between the sliding rod 8 and the adjusting cylinder 6 to guide the sliding, so that the sliding rod 8 does not rotate, an elastic member for driving the sliding rod 8 to reset is arranged in the adjusting cylinder 6, and a transmission assembly is arranged on the placing table 1, and the transmission assembly is used to drive the sliding rod 8 to slide in the direction close to the connecting tube 29 when the first pneumatic rod 231 is extended or retracted.

[0039] Reference Figure 4 and Figure 5 Specifically, in order to facilitate 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 to the end of the sliding rod 8 close to the corresponding piston block 7, and the other end is fixed to the inner wall of the adjustment cylinder 6. In other embodiments, the second spring 24 can be replaced by an arc elastic rod.

[0040] Reference Figure 5 and Figure 6 In order to facilitate the sliding rod 8 to slide toward the direction close to the connecting tube 29 when the first pneumatic rod 231 is extended or retracted, 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, and the rotating axis of the rotating column 9 is parallel to the sliding direction of the sliding rod 8. An abutting inclined surface is provided 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 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 a horizontal direction and extends in the direction of the rotating column 9 on the corresponding side. The abutting rod 10 is used to slide relative to 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 an outward convex arc surface, and the rotating member is set on the placement table 1. The rotating member is used to adjust the rotation of the rotating column 9.

[0041] Reference Figure 5 and Figure 6, in order to facilitate the adjustment of the rotation of the rotating column 9, the rotating member includes a support plate 11, a rotating ring 12, a coil 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 plate 11 corresponds to the rotating column 9 one by one. The support plate 11 is fixed on the placement table 1. The plane of the support plate 11 is perpendicular to the rotation axis of the corresponding rotating column 9. A through hole 19 is provided on the support plate 11 for the corresponding rotating column 9 to pass through; the rotating ring 12 is rotatably arranged on the support plate 11, and the rotating ring 12 is located on the side of the corresponding support plate 11 close to the abutment rod 10. The rotating ring 12 is concentrically arranged with the rotating column 9, and the outer wall of the rotating column 9 is slidably connected with the rotating ring 12. Specifically, a guide protrusion is fixed on the inner wall of the rotating ring 12, and a guide groove is provided on the outer wall of the rotating column 9. The guide protrusion and the guide groove are slidably matched, 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.

[0042] Reference Figure 5 and Figure 6 The fixing rod 14 is fixed on the connecting plate 25 near one side, and the fixing rod 14 is located above the abutting rod 10 on the corresponding connecting plate 25. The coil spring 13 is sleeved outside the rotating ring 12, and one end of the inner ring of the coil 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, so that 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 coil spring 13 to change its displacement. When the fixing rod 14 is driven by the first pneumatic rod 231 from the pressure seat 22 (refer to Figure 2 ) is moved from the state of pressing the heat sink component to the state of releasing the heat sink component from the press seat 22 or from the press seat 22 (refer to Figure 2 ) When the state of loosening the heat sink component moves to the state of pressing the heat sink component by the pressure seat 22, the fixing rod 14 drives one end of the coil spring 13 to displace and change so that the coil spring 13 drives the rotating ring 12 to rotate by 180 degrees.

[0043] Reference Figure 5 and Figure 6 Two U-shaped fixed frames 26 are fixed on one side of the support plate 11 close to the corresponding connecting plate 25. The two fixed frames 26 are aligned with the upper and lower sides of the rotating ring 12. The locking rods 15 correspond to the fixed 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 arranged on the corresponding fixed 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 the rotating ring 12 to limit the rotation of the rotating ring 12. Specifically, a locking block 27 is fixed on one end of the locking rod 15 close to the corresponding rotating ring 12, and a gear ring 28 is coaxially fixed on the rotating ring 12. The locking block 27 is used to mesh with the gear ring 28 to limit the rotation of the rotating ring 12. In other embodiments, the locking block 27 and the gear ring 28 can be replaced by a friction plate fixed on the locking rod 15. The friction plate abuts against the rotating ring 12, which can also achieve the restriction of the rotation of the rotating ring 12.

[0044] Reference Figure 5 and Figure 6 The first spring 16 is sleeved on the locking rod 15, one end of the first spring 16 is fixed to the corresponding fixing frame 26, and the other end is fixed to the side of the locking rod 15 away from the rotating ring 12. The first spring 16 is used to pull the locking rod 15 to slide toward the direction close to the rotating ring 12. The first magnet is embedded in a side of the abutment rod 10 close to the corresponding rotating column 9, and the second magnet 17 is fixed to an end of the locking rod 15 away from the swivel 12. When the moving end of the first pneumatic rod 231 moves downward to cause the pressure seat 22 to loosen the heat sink component, the first magnet on the abutment rod 10 is aligned with the locking rod 15 located below the swivel 12; when the moving end of the first pneumatic rod 231 moves upward to cause the pressure seat 22 to press the heat sink component, the first magnet on the abutment rod 10 is aligned with the locking rod 15 located above the swivel 12. 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 swivel 12. The absorption force between the first magnet and the second magnet 17 is greater than twice the elastic force of the first spring 16. The connecting rod 18 is U-shaped, and the connecting rod 18 will be aligned with the upper and lower sides of the same swivel 12. The locking rods 15 are fixedly connected.

[0045] In the initial state, the moving end of the first pneumatic rod 231 is in a retracted state, at which time the abutting rod 10 on the connecting plate 25 is aligned with the locking rod 15 on the lower side of the rotating ring 12, and 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 inclined surface of the rotating column 9 is tilted upward in the direction away from the connecting tube 29, and the coil spring 13 is in a natural state; then the moving end of the first pneumatic rod 231 moves upward to make the pressure seat 22 press the heat sink component located above, and the moving end of the first pneumatic rod 231 drives the abutting rod 10 and the fixed 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, and under the pulling of the first spring 16 The lower locking rod 15 drives the locking block 27 to approach the swivel 12, so that the locking block 27 is meshed with the corresponding gear ring 28 to achieve the limitation of the swivel 12; as the fixing rod 14 moves upward, the fixing rod 14 gradually pulls the coil spring 13 to tighten the coil spring 13. Since the swivel 12 cannot rotate, the coil spring 13 is deformed, and the abutment rod 10 and the abutment inclined surface of the corresponding rotating column 9 slide relative to each other. The abutment inclined surface abuts the rotating column 9 and the sliding rod 8 to slide toward the connecting pipe 29, so that the piston block 7 approaches the connecting pipe 29, the second spring 24 is stretched, and the piston block 7 pushes out the gas, so that the nozzle 5 blows air toward the surface of the heat sink component, thereby helping to blow off impurities on the surface of the heat sink component and improving the welding quality. Then the abutment rod 10 and the abutment inclined surface of the rotating column 9 are disengaged. As the abutment force decreases, the sliding rod 8 moves toward the direction away from the connecting tube 29 under the pulling force of the second spring 24 to reset. Then the abutment rod 10 moves to the locking rod 15 aligned with the upper side of the swivel 12. The locking block 27 and the gear ring 28 are disengaged through the adsorption force between the first magnet and the aligned second magnet 17. At this time, due to the deformation of the coil spring 13, the coil spring 13 drives the swivel 12 to rotate. The rotation of the swivel 12 drives the corresponding rotating column 9 to rotate, so that the rotating column 9 rotates 180 degrees. At this time, the abutment inclined surface on the rotating column 9 is tilted downward away from the side of the sliding rod 8, and the coil spring 13 returns to its natural state again.

[0046] When the movable end of the first pneumatic rod 231 moves downward to make the pressure seat 22 release the heat sink component located above during welding, the movable 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 disengaged from the second magnet 17, and the locking rod 15 drives the locking block 27 to approach the rotating ring 12 under the pulling of the first spring 16, so that the locking block 27 is engaged with the corresponding gear ring 28 to achieve the limitation of the rotating ring 12; as the fixed rod 14 moves downward, the fixed rod 14 drives the coil spring 13 to loosen the coil spring 13. Since the rotating ring 12 cannot rotate, the coil spring 13 is deformed, and the abutting inclined surface of the abutting rod 10 and the corresponding rotating column 9 continue to slide relative to each other, and the rotating column 9 and the sliding rod 8 slide toward the direction close to the connecting pipe 29 through the abutting inclined surface, so that the piston block 7 pushes out the gas, so that 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 abutment rod 10 disengages from the abutment slope of the rotating column 9. As the abutment force decreases, the sliding rod 8 moves in a direction away from the connecting tube 29 under the pulling force of the second spring 24 to reset. Then the abutment rod 10 moves to align with the locking rod 15 on the lower side of the swivel 12. The locking block 27 is disengaged from the gear ring 28 through the adsorption force between the first magnet and the aligned second magnet 17. At this time, due to the deformation of the coil spring 13, the coil spring 13 drives the swivel 12 to rotate. The rotation of the swivel 12 drives the corresponding rotating column 9 to rotate, so that the rotating column 9 rotates 180 degrees. The abutment slope on the rotating column 9 tilts upward, and the coil spring 13 returns to its natural state again.

[0047] The implementation principle of the embodiment of the present invention is: when in use, first place the two heat sink components that have been embedded up and down on the placement table 1, the heat sink components are located between the clamping limit seat 212 and the corresponding fixed limit seat 211, and the adjacent two sides of the heat sink component located below are respectively abutted against the two fixed limit seats 211 of the tooling unit 2, and then the second pneumatic rod 2131 is started to drive the single-sided bevel block 2132 to move downward. Since the inclined surface of the single-sided bevel block 2132 slides with the corresponding clamping limit seat 212, the single-sided bevel block 2132 slides toward the corresponding fixed limit seat 211 through the inclined surface abutting the clamping limit seat 212 during the downward movement process, so that the clamping limit seat 212 presses the heat sink component located below during welding against the corresponding fixed limit seat 211.

[0048] Then the first pneumatic rod 231 is started, and the moving end of the first pneumatic rod 231 moves upward, and the first pneumatic rod 231 drives the pressure seat 22 to move upward away from the side of the heat sink component. With the cooperation of the connecting rod 232, the side of the pressure seat 22 close to the heat sink component rotates downward to a horizontal state, thereby realizing the pressure seat 22 to press and fix the heat sink component located above. During the upward movement of the moving end of the first pneumatic rod 231, the transmission assembly drives the sliding rod 8 to drive the corresponding piston block 7 to slide toward the direction of the connecting pipe 29. The wind sprayed from the nozzle 5 helps to blow off impurities on the surface of the heat sink component and improve the welding quality. Until the moving end of the first pneumatic rod 231 moves to the upper limit position, the abutment rod 10 disengages from the sliding rod 8, and the sliding rod 8 is reset under the action of the second spring 24.

[0049] Then, the friction stir welding head is used to spot weld the connection between the two heat sink components that are embedded in the upper and lower parts, and then the first pneumatic rod 231 is started. The moving end of the first pneumatic rod 231 moves downward to pull the pressure seat 22 away from the side of the heat sink component and rotates downward. Under the cooperation of the connecting rod 232, the pressure seat 22 abuts against the end of the heat sink component and tilts upward, and the pressure seat 22 disengages from the heat sink component, which can quickly realize the loosening of the heat sink component to make way. At the same time, during the downward movement of the moving end of the first pneumatic rod 231, the transmission assembly drives the sliding rod 8 to drive the corresponding piston block 7 to slide again in the direction close to the connecting pipe 29, and the air sprayed by the nozzle 5 helps to cool the spot welding position and improve the welding quality; finally, the friction stir welding welding head can be used to weld the embedded parts of the two heat sink components embedded in the upper and lower parts along the circumferential direction. Compared with the threaded fixing method, the heat sink component is fixed or loosened by pneumatic drive, which is simple and fast, saves operation time, and helps to improve the welding efficiency of the heat sink component.

[0050] After the welding of the two heat sink components is completed, the second pneumatic rod 2131 is started to drive the single-sided bevel block 2132 to move upward, so that the single-sided bevel block 2132 pulls the clamping limit seat 212 through its own inclined surface to slide in the direction away from the corresponding fixed limit seat 211, thereby helping to loosen the heat sink component located below during welding, facilitating the removal of the heat sink component, and greatly speeding up the installation and disassembly of the heat sink component.

[0051] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in 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 the 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, and the pneumatic connecting rod assembly (23) is used to adjust the pressure seat (22) to press or loosen the heat sink component located above.

2. A friction stir welding tool according to claim 1, characterized in that: The pneumatic connecting rod assembly (23) comprises a first pneumatic rod (231) arranged on the placement platform (1) and a connecting rod (232) hinged on the placement platform (1); the extension direction of the first pneumatic rod (231) is arranged in 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 a 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 a side away from the placement platform (1); 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 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) and the clamping limit seat (212) are arranged opposite to each other, the sliding direction of the clamping limit seat (212) is arranged along 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.

8. A friction stir welding tool according to claim 3, characterized in that: The fixed limit seat (211) is provided with an air delivery cylinder (4), and a side of the air delivery cylinder (4) close to the clamping limit seat (212) is connected to a plurality of nozzles (5), and a side of the air delivery cylinder (4) away from the nozzles (5) is connected to an adjustment cylinder (6) through a connecting pipe (29), and a piston block (7) is slidably arranged in the adjustment cylinder (6), and a sliding rod (8) is arranged on the side of the piston block (7) away from the connecting pipe (29), and the sliding rod (8) is slidably arranged on the adjustment cylinder (6), and an elastic member for driving the sliding rod (8) to reset is arranged in the adjustment cylinder (6), and a transmission assembly is arranged on the placement table (1), and the transmission assembly is used to drive the sliding rod (8) to slide in a direction close to the connecting pipe (29) when the first pneumatic rod (231) is extended or retracted.

9. A friction stir welding tool according to claim 8, characterized in that: The transmission assembly comprises a rotating column (9) rotatably sleeved on the sliding rod (8), an abutment rod (10) arranged on the movable end of the first pneumatic rod (231) close to one side, and a rotating member arranged on the placement table (1); the rotating axis of the rotating column (9) is parallel to the sliding direction of the sliding rod (8); a side of the rotating column (9) away from the sliding rod (8) is provided with an abutment inclined surface; the abutment rod (10) is used for relative sliding abutment with the abutment inclined surface on the rotating column (9); and the rotating member is used for adjusting the rotation of the rotating column (9).

10. A friction stir welding tool according to claim 9, characterized in that: The rotating member comprises a support plate (11), a rotating ring (12), a coil 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 plate (11) is arranged on the placing table (1); a through hole (19) for the rotating column (9) to pass through is opened on the support plate (11); the rotating ring (12) is rotatably arranged on the support plate (11); the rotating ring (12) and the rotating column (9) are connected to each other. The rotating column (9) is concentrically arranged, the outer wall of the rotating column (9) is slidably connected to the rotating ring (12), the fixing rod (14) is arranged on the first pneumatic rod (231) close to the rotating ring (12), 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 fixing rod (14), and two locking rods (15) are arranged, and the two locking rods (15) are aligned with the upper and lower sides of the rotating ring (12), and the locking rods (15) are arranged on the upper and lower sides of the rotating ring (12). 5) is slidably arranged on the support plate (11), 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 the rotating ring (12) to limit the rotation of the rotating ring (12), the first spring (16) is sleeved on the locking rod (15), one end of the first spring (16) 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), and the connecting rod (18) connects the locking rods (15) aligned with the upper and lower sides of the rotating ring (12).

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