A friction stir welding apparatus

Abstract

The application belongs to the technical field of welding, in particular to a friction stir welding equipment, which comprises a fixed base, symmetrical positive clamping devices are arranged on the front and back sides of the fixed base, symmetrical side clamping devices are arranged on the left and right sides of the fixed base, and a welding device is arranged on the upper surface of the fixed base. The device generates high temperature through the high-speed rotation of the fine insertion shaft and the outer shoulder shaft, so that the joint of the welded metal block is hot-melted and fused together to realize the welding effect. After the friction stir welding, there is a very obvious gap at the position where the fine insertion shaft is pulled out. Therefore, after the end of the friction stir welding, the fine insertion shaft in the inside is pulled out under the condition that the central welding rod is attached to the welded metal block, the gap is filled with material by using the material spraying sliding shell, and then the gap is filled, so that the perfect welding work is completed, and the structural strength of the welded metal block is also increased.

Description

Technical Field

[0001] This invention belongs to the field of welding technology, specifically a friction stir welding equipment. Background Technology

[0002] Friction stir welding is similar to conventional friction welding. It also utilizes frictional heat and plastic deformation heat as the welding heat source. The difference lies in the welding process: a cylindrical or other shaped stirring needle is inserted into the joint of the workpiece. The high-speed rotation of the welding head causes friction between the needle and the workpiece material, raising the temperature and softening the material at the joint. Simultaneously, the material is stirred and frictionally stirred to complete the weld.

[0003] Because the tooling used for friction stir welding will have a very obvious notch at the point where the stirring pin is pulled out, if this is not addressed, it will leave obvious welding stains. However, after the stirring pin is pulled out, the notch will become irregular in shape due to factors such as temperature changes and shoulder friction, making subsequent filling work quite cumbersome. Therefore, improvements are needed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention is: a friction stir welding device, comprising a fixed base, with symmetrically arranged front clamping devices on the front and rear sides of the fixed base, symmetrically arranged side clamping devices on the left and right sides of the fixed base, and a welding device disposed on the upper surface of the fixed base.

[0005] The welding equipment includes a guide slide, with a guide groove at the center of the bottom of the guide slide's inner cavity. Two wire winders are symmetrically arranged on both sides of the inner wall of the guide slide. A steel cable is slidably connected to the inner cavity of each wire winder. A concentrated welding rod is fixedly connected to the end of the steel cable away from the wire winder. The wire winders control the concentrated welding rod to slide directionally along the guide groove by pulling the steel cable, and can also fix the concentrated welding rod by tightening the steel cable. The concentrated welding rod includes a control end, with a welding shaft component at the bottom of the control end. A material replenishment component is located inside the welding shaft component.

[0006] The control end includes a push cylinder, a control link is slidably connected to the axis of the inner wall of the push cylinder, and a torque sleeve is rotatably connected to the upper part of the outer surface of the control link. The push cylinder can operate the control link to slide vertically, and the torque sleeve can drive the control link to rotate at high speed. A push sleeve is fixedly connected to the axis of the lower surface of the torque sleeve. The push sleeve is composed of two sleeves. The outer cylinder is connected to the welding shaft component below. The control link drives the outer sleeve to rotate at high speed. The bottom end of the control link is fixedly connected to the axis of the inner cavity of the push sleeve. A return spring is fixedly connected to the axis of the inner wall of the push sleeve.

[0007] The welding shaft component includes an outer shoulder shaft. An inner rotary motor is fixedly connected to the center of the inner cavity of the outer shoulder shaft via a guide groove. A threaded rotating rod is fixedly connected to the outer surface of the output shaft of the inner rotary motor. A thin insertion shaft is threadedly connected to the bottom of the outer surface of the threaded rotating rod. When the thin insertion shaft rotates at high speed, it inserts into the interior of the metal. The high temperature generated by the rotation melts and fuses the joint of the metal together, achieving a welding effect. Meanwhile, the lower surface of the outer shoulder shaft fuses the upper surface of the metal together through high-speed frictional rotation, thereby achieving a welding effect.

[0008] Furthermore, the feeding component includes a molten material insulation shell. Symmetrically fixed docking shells are located on the front and rear sides of the inner cavity of the molten material insulation shell. A heat-resistant connecting cylinder is symmetrically arranged at the bottom of the inner cavity of the molten material insulation shell. A spraying slide shell is fixedly connected to the bottom end of the heat-resistant connecting cylinder. A docking button is located at the axis of the inner cavity of the spraying slide shell. A spraying nozzle is opened on the side of the bottom of the inner cavity of the spraying slide shell near the thin insertion shaft. It has good heat preservation inside the outer shoulder shaft and maintains a high internal temperature through the heat generated by friction. When the thin insertion shaft rises along the groove at the axis of the outer shoulder shaft, the spraying slide shells on both sides fill the empty space at the axis. Then, the spraying slide shells press against each other, triggering the spraying slide shells to work. At this time, the spraying slide shells spray feeding material downwards through the notch at the bottom. Because the sides of the spraying slide shell are arc-shaped, they gradually push the thin insertion shafts on both sides apart as the thin insertion shaft descends. Therefore, the docked thin insertion shafts will not get stuck at the bottom end of the thin insertion shaft, preventing the thin insertion shaft from failing to reset.

[0009] Furthermore, a strip-shaped guide rod is provided at the center of the inner cavity of the outer shoulder shaft via a guide groove. A docking guide groove is provided on the outer surface of the thin insertion shaft, and the outer surface of the docking guide groove is slidably connected to the center of the inner cavity of the outer shoulder shaft via the strip-shaped guide rod. The bottom end of the thin insertion shaft extends to the outside of the outer shoulder shaft. The bottom of the outer surface of the push sleeve is inserted into the bottom of the inner cavity of the outer shoulder shaft. Under the control of the internal rotating motor, the threaded rod can only rotate and cannot slide vertically. Therefore, when the threaded rod rotates clockwise, the thin insertion shaft will slide along the outer surface of the threaded rod, thereby controlling the threaded rod to rise. Similarly, when the threaded rod rotates counterclockwise, the threaded rod will descend.

[0010] Furthermore, there are two spraying slide shells. The lower surface of the spraying slide shell is slidably connected to the bottom of the inner wall of the outer shoulder shaft. The side of the spraying slide shell is connected to the side of the inner wall of the outer shoulder shaft via a push spring belt. The axis of the inner wall of the molten material insulation shell is fixedly connected to the axis of the inner wall of the outer shoulder shaft. The end of the docking shell away from the molten material insulation shell extends to the outside of the molten material insulation shell. The front and rear sides of the lower surface of the torque sleeve are slidably connected to the upper surface of the guide groove via insert rods. The outer surface of the torque sleeve is fixedly connected to the end of the steel cable away from the reel. The bottom of the push sleeve extends to the outside of the guide slide shell via the guide groove.

[0011] Furthermore, the fixed base includes a fixed base plate, a placement slot is formed at the center of the inner cavity of the fixed base plate, a welding metal block is provided in the middle of the placement slot, horizontal guide plates are symmetrically arranged on the front and rear sides of the upper surface of the fixed base plate, traction controllers are symmetrically arranged at both ends of the horizontal guide plates, and a height adjustment slide rod is slidably connected to the inner wall of the horizontal guide plate. The top end of the height adjustment slide rod is fixedly connected to the insertion port on the lower surface of the guide slide, the bottom of the outer surface of the thin insertion shaft extends to the center of the inner cavity of the welding metal block, and the lower surface of the welding metal block is in close contact with the bottom of the inner wall of the placement slot through an adsorption port.

[0012] Furthermore, the side clamping device includes an external pump housing. Segmented push rods are evenly arranged at the air outlet of the external pump housing. The external pump housing extends the segmented push rods by applying pressure and shortens them by reducing pressure. A side clamping plate is fixedly connected to the end of each segmented push rod furthest from it. The outer surface of the external pump housing is fixedly connected to the outer surface of the fixed base plate. The lower part of the outer surface of the fixed base plate is slidably connected to the inner cavity of the fixed base plate through a placement slot. The positive clamping device includes a straightening slide rail. The outer surface of the straightening slide rail is fixedly connected to the outer surface of the fixed base plate. A bending connecting rod is slidably connected to the inner wall of the straightening slide rail. A wall-mounted housing is fixedly connected to the end of the bending connecting rod furthest from the straightening slide rail. A coarse limiting plate is slidably connected to the inner cavity of the wall-mounted housing furthest from the bending connecting rod. The outer surface of the coarse limiting plate is slidably connected to the inner cavity of the fixed base plate. A positive clamping plate is fixedly connected to the front end of the coarse limiting plate.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. This device generates high-temperature friction through the high-speed rotation of the thin insert shaft and the outer shoulder shaft, causing the joint of the welded metal blocks to melt and fuse together, thus achieving a welding effect. After friction stir welding, there will be a very obvious gap at the point where the thin insert shaft is pulled out. Therefore, after the friction stir welding is completed, while ensuring that the concentrated welding rod is in close contact with the welded metal block, the inner thin insert shaft is pulled out, and the gap is filled with material using a sprayed sliding shell. This completes a more perfect welding work and also increases the structural strength of the welded metal block.

[0015] 2. During the filling process, since the notch where the fine insert shaft is pulled out has not yet cooled, and the filler material will be sprayed from top to bottom through the hole of the fine insert shaft, the filling material will be precisely poured into this part of the notch. The outer shoulder shaft will block and isolate the filling material to prevent leakage. This will avoid irregular deformation of the notch due to cooling issues, which would make filling difficult. Furthermore, the upper surface of the notch will be further smoothed by the outer shoulder shaft to eliminate filling marks and make the outer surface of the welded metal block more aesthetically pleasing.

[0016] 3. During the upward withdrawal of the fine insert shaft, the spraying slides on both sides will automatically extend their spraying nozzles from the bottom of the outer shoulder shaft and automatically add material by touching each other through the docking buttons. Therefore, no manual operation is required, and the feeding work can be carried out automatically, giving the device a certain degree of automation. In addition, during the reset process of the fine insert shaft, the spraying slides on both sides will definitely push them apart, thereby stopping the addition of material and avoiding the problem of adding too much material.

[0017] 4. After the welding metal block is placed in the middle of the slot, the position of the welding metal block needs to be corrected by using both the front clamping device and the side clamping device. Since the combined welding metal blocks may be of different lengths, two side clamping plates are used on both sides to clamp the two welding metal blocks respectively. Then, the front and rear front clamping plates clamp the sides of the welding metal blocks to ensure that the welding metal blocks can stick together tightly and will not be misaligned due to the high-speed rotation of the thin insertion shaft during the welding process. Attached Figure Description

[0018] Figure 1 This is the front view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is a cross-sectional view of the welding equipment of the present invention;

[0021] Figure 4 This is a cross-sectional view of the concentrated welding rod of the present invention;

[0022] Figure 5 This is a cross-sectional view of the control terminal of the present invention;

[0023] Figure 6 This is a cross-sectional view of the welding shaft component of the present invention;

[0024] Figure 7 This is a schematic diagram of the feeding component of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the fixed base of the present invention;

[0026] Figure 9 This is a schematic diagram of the side clamping device of the present invention;

[0027] Figure 10 This is a schematic diagram of the structure of the positive clamping device of the present invention.

[0028] In the diagram: 1. Fixed base; 2. Positive clamping device; 3. Side clamping device; 4. Welding metal block; 5. Welding equipment; 51. Guide slide; 52. Guide chute; 53. Winding reel; 54. Steel cable; 6. Concentrated welding rod; 61. Control end; 62. Welding shaft assembly; 63. Feeding assembly; 611. Push cylinder; 612. Torque sleeve; 613. Control linkage; 614. Return spring sleeve; 615. Push sleeve; 621. Outer shoulder shaft; 622. Internal rotary motor; 623. Threaded rotating rod; 624. Fine insertion shaft 625. Docking guide groove; 626. Strip guide rod; 631. Molten material insulation shell; 632. Docking shell; 633. Heat-resistant connecting cylinder; 634. Spraying sliding shell; 635. Spraying nozzle; 636. Docking button; 11. Fixed base plate; 12. Placement slot; 13. Horizontal guide plate; 14. Traction controller; 15. Height adjustment slide rod; 31. External pump shell; 32. Segmented push rod; 33. Side clamping plate; 21. Correction slide rail; 22. Bending connecting rod; 23. Wall-mounted box shell; 24. Coarse limiting plate; 25. Forward clamping plate. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0030] Example 1, please refer to Figures 1-7 The present invention provides a technical solution: a friction stir welding device, comprising a fixed base 1, with front clamping devices 2 symmetrically arranged on the front and rear sides of the fixed base 1, side clamping devices 3 symmetrically arranged on the left and right sides of the fixed base 1, and a welding device 5 arranged on the upper surface of the fixed base 1.

[0031] The welding equipment 5 includes a guide slide 51, a guide groove 52 is provided at the axis of the bottom of the inner cavity of the guide slide 51, and a winding device 53 is symmetrically arranged on both sides of the inner wall of the guide slide 51. A steel cable 54 is slidably connected to the inner cavity of the winding device 53. A concentrated welding rod 6 is fixedly connected to the end of the steel cable 54 away from the winding device 53. The winding device 53 controls the concentrated welding rod 6 to slide directionally along the guide groove 52 by pulling the steel cable 54, and can also fix the concentrated welding rod 6 by tightening the steel cable 54. The concentrated welding rod 6 includes a control end 61, a welding shaft component 62 is provided at the bottom of the control end 61, and a material feeding component 63 is provided inside the welding shaft component 62.

[0032] The control end 61 includes a push cylinder 611, a control link 613 is slidably connected to the axis of the inner wall of the push cylinder 611, a torque sleeve 612 is rotatably connected to the upper part of the outer surface of the control link 613, the push cylinder 611 can operate the control link 613 to slide vertically, the torque sleeve 612 can drive the control link 613 to rotate at high speed, a push sleeve 615 is fixedly connected to the axis of the lower surface of the torque sleeve 612, the push sleeve 615 is composed of two sleeves, the outer sleeve is connected to the welding shaft component 62 below, the outer sleeve is driven to rotate at high speed by the control link 613, the bottom end of the control link 613 is fixedly connected to the axis of the inner cavity of the push sleeve 615, and a return spring sleeve 614 is fixedly connected to the axis of the inner wall of the push sleeve 615.

[0033] The welding shaft component 62 includes an outer shoulder shaft 621. An inner rotary motor 622 is fixedly connected to the shaft center of the inner cavity of the outer shoulder shaft 621 via a guide groove 52. A threaded rotating rod 623 is fixedly connected to the outer surface of the output shaft of the inner rotary motor 622. A thin insertion shaft 624 is threadedly connected to the bottom of the outer surface of the threaded rotating rod 623. When the thin insertion shaft 624 rotates at high speed, it will insert into the interior of the metal. The high temperature generated by the rotation will melt and fuse the joint of the metal together, achieving a welding effect. Meanwhile, the lower surface of the outer shoulder shaft 621 will fuse the upper surface of the metal together through high-speed frictional rotation, thereby achieving a welding effect.

[0034] The feeding component 63 includes a molten material insulation shell 631. A docking shell 632 is symmetrically fixed to the front and rear sides of the inner cavity of the molten material insulation shell 631. A heat-resistant connecting cylinder 633 is symmetrically arranged at the bottom of the inner cavity of the molten material insulation shell 631. A spraying slide shell 634 is fixedly connected to the bottom end of the heat-resistant connecting cylinder 633. A docking button 636 is provided at the axis of the inner cavity of the spraying slide shell 634. A spraying nozzle 635 is opened on the side of the bottom of the inner cavity of the spraying slide shell 634 near the thin insertion shaft 624. This provides good insulation inside the outer shoulder shaft 621 and maintains a high internal temperature through the heat generated by friction. When the thin insert shaft 624 rises along the groove at the center of the outer shoulder shaft 621, the spraying slide shells 634 on both sides will fill the empty space at the center of the shaft. Then, the spraying slide shells 634 will press against each other, thus triggering the spraying slide shells 634 to work. At this time, the spraying slide shells 634 will spray material downward through the notch at the bottom. Since the side of the spraying slide shell 634 is arc-shaped, when the thin insert shaft 624 descends, it will gradually push the thin insert shafts 624 on both sides apart. Therefore, the mating thin insert shafts 624 will not get stuck at the bottom of the thin insert shaft 624, causing the thin insert shaft 624 to be unable to reset.

[0035] A strip-shaped guide rod 626 is provided at the center of the inner cavity of the outer shoulder shaft 621 via a guide groove 52. A docking guide groove 625 is provided on the outer surface of the thin insertion shaft 624, and the outer surface of the docking guide groove 625 is slidably connected to the center of the inner cavity of the outer shoulder shaft 621 via the strip-shaped guide rod 626. The bottom end of the thin insertion shaft 624 extends to the outside of the outer shoulder shaft 621. The bottom of the outer surface of the push sleeve 615 is inserted into the bottom of the inner cavity of the outer shoulder shaft 621. The threaded rotating rod 623 can only rotate and cannot slide vertically under the control of the inner rotating motor 622. Therefore, when the threaded rotating rod 623 rotates clockwise, the thin insertion shaft 624 slides along the outer surface of the threaded rotating rod 623, thereby controlling the threaded rotating rod 623 to rise. Similarly, when the threaded rotating rod 623 rotates counterclockwise, the threaded rotating rod 623 will descend.

[0036] There are two spraying slide shells 634. The lower surface of the spraying slide shell 634 is slidably connected to the bottom of the inner wall of the outer shoulder shaft 621. The side of the spraying slide shell 634 is connected to the side of the inner wall of the outer shoulder shaft 621 through a push spring belt. The axis of the inner wall of the molten material insulation shell 631 is fixedly connected to the axis of the inner wall of the outer shoulder shaft 621. The end of the docking shell 632 away from the molten material insulation shell 631 extends to the outside of the molten material insulation shell 631. The front and rear sides of the lower surface of the torque sleeve 612 are slidably connected to the upper surface of the guide groove 52 through insert rods. The outer surface of the torque sleeve 612 is fixedly connected to the end of the steel cable 54 away from the winding device 53. The bottom of the push sleeve 615 extends to the outside of the guide slide shell 51 through the guide groove 52.

[0037] The metal material to be welded is placed in the middle area of ​​the fixed base 1 and fixed by the positive clamping device 2 and the side clamping device 3. Then, friction stir welding is performed using the welding device 5. The specific operation is as follows:

[0038] Welding begins at the leftmost joint of the welding metal block 4. The thin insertion shaft 624 at the bottom of the concentrated welding rod 6 needs to be aligned with the joint. The position of the concentrated welding rod 6 is adjusted using the cable reel 53 so that it slides along the guide groove 52. After adjustment, the steel cable 54 is tightened to lock the position of the concentrated welding rod 6. Then, the torque sleeve 612 drives the control linkage 613 to rotate at high speed. The push top cylinder 611 pushes the control linkage 613 downward. At this time, the push sleeve 615 is stretched, and the lower outer shoulder shaft 621 also descends. At this time, the high-speed rotating outer shoulder shaft 621 and the thin insertion shaft 624 will melt the joint of the welding metal block 4 through the high temperature generated by the rotation, thereby achieving the insertion effect. The traction controller 14 on the upper surface of the fixed base 1 drives the metal block to slide from left to right along the joint of the metal block.

[0039] After the fine insertion shaft 624 melts the deep part of the joint of the welding metal block 4, the metal will fuse together to achieve the welding effect. The lower surface of the outer shoulder shaft 621 fits against the upper surface of the welding metal block 4, thereby eliminating the gaps generated by welding and making the outer surface of the welding metal block 4 smoother, until the concentrated welding rod 6 moves to the far right of the welding metal block 4.

[0040] As welding nears completion, the welding shaft assembly 62 is stopped from rotating. Then, the internal internal motor 622 controls the threaded rod 623 to rotate clockwise, causing the thin insertion shaft 624 to slide upwards and retract into the outer shoulder shaft 621. Next, the sprayed material sliding shells 634 on both sides fill the gaps on the welded metal block 4 that were left empty due to the removal of the thin insertion shaft 624. After the gaps are filled, the internal internal motor 622 controls the threaded rod 623 to rotate counterclockwise, causing the bottom end of the thin insertion shaft 624 to fill the bottom of the outer shoulder shaft 621. Then, the outer shoulder shaft 621 is rotated at high speed, causing the lower surface of the outer shoulder shaft 621 to rub against the upper surface of the welded metal block 4 at high speed, thereby completely welding the welded metal block 4.

[0041] Example 2, please refer to Figures 1-10 This invention provides a technical solution: Based on embodiment 1, the fixed base 1 includes a fixed base plate 11. A placement slot 12 is provided at the center of the inner cavity of the fixed base plate 11. A welding metal block 4 is provided in the middle of the placement slot 12. Horizontal guide plates 13 are symmetrically arranged on the front and rear sides of the upper surface of the fixed base plate 11. Traction controllers 14 are symmetrically arranged at both ends of the horizontal guide plates 13. An adjustment slide rod 15 is slidably connected to the inner wall of the horizontal guide plates 13. The top end of the adjustment slide rod 15 is fixedly connected to the insertion port on the lower surface of the guide slide shell 51. The bottom of the outer surface of the thin insertion shaft 624 extends to the center of the inner cavity of the welding metal block 4. The lower surface of the welding metal block 4 is tightly attached to the bottom of the inner wall of the placement slot 12 through the suction port.

[0042] The side clamping device 3 includes an external pump housing 31. Segmented push rods 32 are evenly arranged at the air outlet of the external pump housing 31. The external pump housing 31 can extend the segmented push rods 32 by pressurizing, and can also shorten the segmented push rods 32 by depressurizing. A side clamping plate 33 is fixedly connected to the end of the segmented push rods 32 away from the segmented push rods 32. The outer surface of the external pump housing 31 is fixedly connected to the outer surface of the fixed base plate 11. The lower part of the outer surface of the fixed base plate 11 is slidably connected to the inner cavity of the fixed base plate 11 through the placement slot 12. The clamping device 2 includes a straightening slide rail 21. The outer surface of the straightening slide rail 21 is fixedly connected to the outer surface of the fixed base plate 11. A bending connecting rod 22 is slidably connected to the inner wall of the straightening slide rail 21. A wall-mounted housing 23 is fixedly connected to the end of the bending connecting rod 22 away from the straightening slide rail 21. A coarse limiting plate 24 is slidably connected to the side of the inner cavity of the wall-mounted housing 23 away from the bending connecting rod 22. The outer surface of the coarse limiting plate 24 is slidably connected to the inner cavity of the fixed base plate 11. A forward clamping plate 25 is fixedly connected to the front end of the coarse limiting plate 24.

[0043] After the welding metal block 4 is placed in the middle of the placement slot 12, the position of the welding metal block 4 needs to be corrected by using the positive clamping device 2 and the side clamping device 3. Since the combined welding metal blocks 4 may be of different lengths, two side clamping plates 33 are used on both sides to clamp the two welding metal blocks 4 respectively. Then, the front and rear positive clamping plates 25 clamp the sides of the welding metal blocks 4 to ensure that the welding metal blocks 4 can stick together tightly and will not be misaligned during the welding process due to the high-speed rotation of the thin insertion shaft 624.

[0044] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A friction stir welding apparatus, comprising a fixed base (1), wherein front clamping devices (2) are symmetrically arranged on the front and rear sides of the fixed base (1), side clamping devices (3) are symmetrically arranged on the left and right sides of the fixed base (1), and a welding device (5) is arranged on the upper surface of the fixed base (1), characterized in that: The welding equipment (5) includes a guide slide (51), a guide groove (52) is provided at the axis at the bottom of the inner cavity of the guide slide (51), and a winding device (53) is symmetrically arranged on both sides of the inner wall of the guide slide (51). A steel cable (54) is slidably connected to the inner cavity of the winding device (53), and a concentrated welding rod (6) is fixedly connected to one end of the steel cable (54) away from the winding device (53). The centralized welding rod (6) includes a control end (61), and a welding shaft component (62) is provided at the bottom of the control end (61). A material replenishment component (63) is provided inside the welding shaft component (62). The control end (61) includes a push cylinder (611), a control link (613) is slidably connected to the axis of the inner wall of the push cylinder (611), a torque sleeve (612) is rotatably connected to the upper part of the outer surface of the control link (613), a push sleeve (615) is fixedly connected to the axis of the lower surface of the torque sleeve (612), the bottom end of the control link (613) is fixedly connected to the axis of the inner cavity of the push sleeve (615), and a return spring sleeve (614) is fixedly connected to the axis of the inner wall of the push sleeve (615). The welding shaft component (62) includes an outer shoulder shaft (621). An inner rotary motor (622) is fixedly connected to the shaft center of the inner cavity of the outer shoulder shaft (621) through a guide slide (52). A threaded rotating rod (623) is fixedly connected to the outer surface of the output shaft of the inner rotary motor (622). A thin insertion shaft (624) is threadedly connected to the bottom of the outer surface of the threaded rotating rod (623). The feeding component (63) includes a molten material insulation shell (631), and docking shells (632) are symmetrically fixed on the front and rear sides of the inner cavity of the molten material insulation shell (631). A heat-resistant connecting cylinder (633) is symmetrically arranged at the bottom of the inner cavity of the molten material insulation shell (631). A spraying slide shell (634) is fixedly connected to the bottom end of the heat-resistant connecting cylinder (633). A docking button (636) is provided at the axis of the inner cavity of the spraying slide shell (634). A spraying port (635) is opened on the side of the bottom of the inner cavity of the spraying slide shell (634) near the thin insertion shaft (624).

2. The friction stir welding equipment according to claim 1, characterized in that: A strip guide rod (626) is provided at the center of the inner cavity of the outer shoulder shaft (621) through a guide groove (52). A docking guide groove (625) is provided on the outer surface of the thin insertion shaft (624), and the outer surface of the docking guide groove (625) is slidably connected to the center of the inner cavity of the outer shoulder shaft (621) through the strip guide rod (626). The bottom end of the thin insertion shaft (624) extends to the outside of the outer shoulder shaft (621), and the bottom of the outer surface of the push sleeve (615) is inserted into the bottom of the inner cavity of the outer shoulder shaft (621).

3. The friction stir welding equipment according to claim 2, characterized in that: There are two spraying slide shells (634). The lower surface of the spraying slide shell (634) is slidably connected to the bottom of the inner wall of the outer shoulder shaft (621). The side of the spraying slide shell (634) is connected to the side of the inner wall of the outer shoulder shaft (621) through a push spring belt. The axis of the inner wall of the molten material insulation shell (631) is fixedly connected to the axis of the inner wall of the outer shoulder shaft (621). The end of the docking shell (632) away from the molten material insulation shell (631) extends to the outside of the molten material insulation shell (631).

4. The friction stir welding equipment according to claim 3, characterized in that: The front and rear sides of the lower surface of the torque sleeve (612) are slidably connected to the upper surface of the guide groove (52) through the insertion rod. The outer surface of the torque sleeve (612) is fixedly connected to the end of the steel cable (54) away from the reel (53). The bottom of the push sleeve (615) extends to the outside of the guide slide shell (51) through the guide groove (52).

5. The friction stir welding equipment according to claim 1, characterized in that: The fixed base (1) includes a fixed base plate (11). A placement slot (12) is provided at the center of the inner cavity of the fixed base plate (11). A welded metal block (4) is provided in the middle of the placement slot (12). Horizontal guide plates (13) are symmetrically arranged on the front and rear sides of the upper surface of the fixed base plate (11). Traction controllers (14) are symmetrically arranged at both ends of the horizontal guide plates (13). A height adjustment slide rod (15) is slidably connected to the inner wall of the horizontal guide plates (13).

6. The friction stir welding equipment according to claim 5, characterized in that: The top of the height adjustment slide bar (15) is fixedly connected to the insertion port on the lower surface of the guide slide shell (51). The bottom of the outer surface of the thin insertion shaft (624) extends to the axis of the inner cavity of the welding metal block (4). The lower surface of the welding metal block (4) is in close contact with the bottom of the inner wall of the placement slot (12) through the adsorption port.

7. The friction stir welding equipment according to claim 6, characterized in that: The side clamping device (3) includes an external pump housing (31), and the air outlet of the external pump housing (31) is uniformly provided with segmented push rods (32). The end of the segmented push rod (32) away from the segmented push rod (32) is fixedly connected to a side clamping plate (33). The outer surface of the external pump housing (31) is fixedly connected to the outer surface of the fixed base plate (11). The lower part of the outer surface of the fixed base plate (11) is slidably connected to the inner cavity of the fixed base plate (11) through a placement slot (12).

8. The friction stir welding equipment according to claim 7, characterized in that: The positive clamping device (2) includes a corrective slide rail (21), the outer surface of which is fixedly connected to the outer surface of the fixed base plate (11), a bending connecting rod (22) is slidably connected to the inner wall of the corrective slide rail (21), a wall-mounted housing (23) is fixedly connected to the end of the bending connecting rod (22) away from the corrective slide rail (21), a coarse limiting plate (24) is slidably connected to the side of the inner cavity of the wall-mounted housing (23) away from the bending connecting rod (22), the outer surface of the coarse limiting plate (24) is slidably connected to the inner cavity of the fixed base plate (11), and a positive clamping plate (25) is fixedly connected to the front end of the coarse limiting plate (24).

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