High-precision metal wire mesh forming and welding equipment
By designing high-precision wire mesh forming and welding equipment, the sliding rod and pneumatic cylinder are used to drive the forming device to move, and combining gears and threaded rod adjustment grippers, the problem of difficulty in adjusting the height and welding of existing equipment is solved, and the stable fixation and efficient welding of wire mesh is achieved, and the overall stability and efficiency of welding is improved.
Patent Information
- Application Number
- CN202411994250.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-04-18
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing welding equipment is difficult to adjust the height and welding wire mesh at different locations, and it is easy to cause the wire mesh to detach from its original position during the welding process, resulting in inefficiency and increased costs.
A high-precision wire mesh forming welding equipment is designed, using a motor-driven sliding rod and pneumatic cylinder to drive the forming device to move, and the extended width of the gripper is adjusted in combination with the gears and threaded rods to achieve stable fixation and efficient welding of the wire mesh.
Through this equipment, it is possible to achieve a tight connection between the various parts of the metal wire mesh, increase its stability and strength, prevent loosening and deformation, improve the stability of the overall structure, and quickly adjust the direction and reduce jitter during the welding process, and improve the overall stability of the welding.
Smart Images
Figure CN119839491A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of welding equipment, in particular to high-precision metal wire mesh forming welding equipment. Background Art
[0002] Wire mesh welding refers to the process of connecting wire meshes together through a welding process. Wire meshes are usually woven from steel wire, copper wire or other metal wires and have a variety of uses, such as screening, filtering, protection, etc. There are many technologies for welding wire meshes, including resistance spot welding, laser welding, electron beam welding and plasma arc welding. However, in the prior art, the welding equipment cannot adjust the height or weld wire meshes in different positions in time during welding, and during the welding process, if the wire mesh is not fixed, it is easy to move away from the original position, which will cause low efficiency and increase costs. Based on this, the present invention proposes a high-precision wire mesh forming welding equipment to solve the above problems. Summary of the invention
[0003] In view of the deficiencies in the prior art, the present invention provides a high-precision metal wire mesh forming welding device.
[0004] To achieve the above object, the present invention provides the following technical solutions: A high-precision metal wire mesh forming and welding device, comprising a base, a motor is fixedly connected to the outside of the base, a chopping board is fixedly connected to the top of the base, a fixing device is connected to the top of the chopping board, a connecting plate is fixedly connected to the rear side of the chopping board, a connecting round block is movably connected to the groove of the connecting plate, a first sliding rod is fixedly connected to the bottom end of the connecting round block, a welding device is movably connected to the front end convex part of the first sliding rod, the welding device comprises a moving device and a forming device, the rear end of the moving device is movably connected to the front end convex part of the first sliding rod, so it can slide back and forth at the front end of the first sliding rod, and when the moving device is in the active position, it also drives the movement of the forming device connected to the bottom end, so that the forming device can change its position to weld the metal wire mesh on the top of the fixing device; The fixing device comprises a gear and a threaded rod. When the gear is rotated by the rotation of the threaded rod, the expansion width of a gripper movably connected at one end can be adjusted, so that the gripper can fix metal wire meshes of different areas.
[0005] Preferably, the moving device comprises a pneumatic cylinder, a hollow plate is fixedly connected to the bottom end of the pneumatic cylinder, and a second sliding rod is fixedly connected to the bottom of the hollow plate.
[0006] Preferably, the output shaft end of the pneumatic cylinder is fixedly connected to a fixed block, both sides of the fixed block are movably connected to L-shaped plates, the bending parts of the two L-shaped plates are movably connected to the first rotating shaft, the grooves at the upper and lower ends of the two L-shaped plates are movably connected to the second rotating shaft, the bottom ends of the two second rotating shafts are movably connected to sliding blocks, and the top of the sliding block is movably connected to the bottom of the second sliding rod, and the bottoms of the two sliding blocks are fixedly connected to a molding device.
[0007] Preferably, the molding device includes a first rotating block, the top of the first rotating block is fixedly connected to the bottom of the two sliding blocks, the second rotating block is movably connected to the bottom of the first rotating block, the second rotating block is movably connected to the bottom of the third rotating block, and the third rotating block is movably connected to the fourth rotating block at the bottom groove.
[0008] Preferably, a hollow circle is fixedly connected to the bottom of the fourth rotating block, a plurality of movable tubes are fixedly connected to the center of the bottom of the hollow circle, and welding machines are fixedly connected to the bottom ends of the plurality of movable tubes.
[0009] Preferably, the fixing device comprises several support frames, several bottoms of the support frames are connected to the top of the chopping board, several tops of the support frames are movably connected to a first circular plate, several elliptical blocks are fixedly connected to the top of the first circular plate, and movable blocks are movably connected in the middle of several elliptical blocks.
[0010] Preferably, gears are fixedly connected to the middle grooves of several movable blocks, threaded rods are meshingly connected to the outer surfaces of several gears, and the bottom of the threaded rods is connected to the center of the top of the first circular plate, the top of the threaded rods is movably connected to the second circular plate, the top of the raised parts at the rear ends of several movable blocks are movably connected to one end of the movable rod, and the other ends of several movable rods are movably connected to grippers.
[0011] Compared with the prior art, the present invention provides a high-precision metal wire mesh forming welding device, which has the following beneficial effects: 1. The high-precision metal wire mesh forming welding equipment, by arranging the electric welding device at the front end protruding part of the first sliding rod, can use the connecting round block fixedly connected to the front end of the first sliding rod to move up and down at the groove of the connecting plate to adjust the height, thereby driving the electric welding device to move together. The electric welding device will slide to the top of the fixing device through the power generation of the motor, and the sliding electric welding device can make the connection between the various parts of the metal wire mesh tighter, increase its stability and strength, effectively prevent loosening and deformation, and thus improve the stability of the overall structure.
[0012] 2. The high-precision metal wire mesh forming welding equipment, by fixing the output shaft end of the pneumatic cylinder with the fixed block, can drive the L-shaped plates movably connected on both sides of the fixed block to move upward when the pneumatic cylinder is pulled upward, and the two bending parts of the L-shaped plates will pull the second rotating shaft movably connected at the groove at the bottom end of the L-shaped plate to move toward the center of the hollow plate under the movement of the first rotating shaft, and the bottom ends of the two second rotating shafts are connected to the sliding block, so during the movement, the two sliding blocks will move together with the L-shaped plate, and finally drive the forming device fixedly connected to the bottom of the sliding block to move above the metal wire mesh, so that the welding machine can quickly adjust the direction during welding.
[0013] 3. The high-precision wire mesh forming welding equipment can adjust the folding angle of the second rotating block to the left and right by setting a second rotating block with a movable connection at the bottom of the first rotating block. The bottom end of the second rotating block is movably connected to the top of the third rotating block. When the third rotating block drives the movable tube connected to the bottom to rotate, the welding machine located at the bottom of several movable tubes will rotate to weld the wire mesh, so that the wire mesh is evenly stressed in multiple directions. This welding method can enhance the overall performance of the wire mesh and make it show better stability and safety in various applications.
[0014] 4. The high-precision wire mesh forming welding equipment can manually adjust the height of the entire fixing device by setting a support frame at the bottom of the first circular plate. The outer surfaces of several of the gears are meshed and connected with the outer surface of the threaded rod. When the threaded rod rotates, the gears will drive the corresponding movable blocks on both sides to move up and down, and the movable movable blocks will drive the grippers fixedly connected to the rear end raised parts to shrink toward the center of the second circular plate, and finally fix the two sides of the wire mesh placed on the top of the second circular plate to provide stable support for the welding process. In addition, the jitter and deviation during the welding process can be greatly reduced, making the weld more uniform and smooth, thereby improving the overall stability of the welding. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the front structure of the present invention; Figure 2 It is a schematic diagram of the side structure of the present invention; Figure 3 It is a schematic diagram of the structure of the electric welding device in the present invention; Figure 4 It is a schematic diagram of the structure of the mobile device in the present invention; Figure 5 It is a schematic diagram of the structure of the connection relationship with the fixed block in the present invention; Figure 6 It is a schematic diagram of the structure of the molding device in the present invention; Figure 7 It is a schematic diagram of the structure of the fixing device in the present invention; Figure 8 It is a schematic diagram of the connection relationship structure of the outer surface of the threaded rod in the present invention.
[0016] In the figure: 1, base; 2, motor; 3, chopping board; 4, connecting plate; 5, connecting circular block; 6, first sliding rod; 7, electric welding device; 71, moving device; 711, pneumatic cylinder; 712, hollow plate; 713, second sliding rod; 714, fixed block; 715, L-shaped plate; 716, first rotating shaft; 717, second rotating shaft; 718, sliding block; 72, forming device; 721, first rotating block; 722, second rotating block; 723, third rotating block; 724, fourth rotating block; 725, hollow circle; 726, movable tube; 727, welding machine; 8, fixing device; 81, supporting frame; 82, first circular plate; 83, elliptical block; 84, movable block; 85, gear; 86, threaded rod; 87, movable rod; 88, gripper; 89, second circular plate. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0018] Example: See Figure 1-Figure 2A high-precision metal wire mesh forming welding device comprises a base 1, a motor 2 is arranged on the outer side of the base 1, and the outer side of the base 1 is fixedly connected to the inner side of the motor 2, a cutting board 3 is arranged on the top of the base 1, and the top of the base 1 is fixedly connected to the bottom of the cutting board 3, a fixing device 8 is arranged on the top of the cutting board 3, and the top of the cutting board 3 is connected to the bottom of the fixing device 8, a connecting plate 4 is arranged on the rear side of the cutting board 3, and the rear side of the cutting board 3 is fixedly connected to the front end of the connecting plate 4, a connecting round block 5 is arranged at the groove of the connecting plate 4, and the groove of the connecting plate 4 is movably connected to the outer surface of the top end of the connecting round block 5, a first sliding rod 6 is arranged at the bottom of the connecting round block 5, and the connecting round block The bottom end of the first sliding rod 5 is fixedly connected to the front end of the first sliding rod 6. The front end convex part of the first sliding rod 6 is provided with an electric welding device 7. By arranging the electric welding device 7 at the front end convex part of the first sliding rod 6, the connecting round block 5 fixedly connected to the front end of the first sliding rod 6 can be used to move up and down at the groove of the connecting plate 4 to adjust the height, and the electric welding device 7 can be driven to move together. The electric welding device 7 will slide to the top of the fixing device 8 through the power generation of the motor 2. After sliding, the electric welding device 7 can make the connection between the various parts of the metal wire mesh tighter, increase its stability and strength, and effectively prevent loosening and deformation, thereby improving the stability of the overall structure. The front end convex part of the first sliding rod 6 is movably connected to the rear end convex part of the electric welding device 7. The electric welding device 7 includes a moving device 71 and a forming device 72. The rear end of the moving device 71 is in a movably connected relationship with the front end convex part of the first sliding rod 6, so it can slide back and forth at the front end of the first sliding rod 6. When the moving device 71 is in the active position, it also drives the movement of the forming device 72 connected at the bottom, so that the forming device 72 can change its position to weld the metal wire mesh on the top of the fixing device 8; See also Figure 7-Figure 8 The fixing device 8 includes a gear 85 and a threaded rod 86. When the gear 85 rotates through the rotation of the threaded rod 86, the expansion width of a gripper 88 movably connected at one end can be adjusted, so that the gripper 88 can fix metal wire meshes of different areas.
[0019] See also Figure 3-Figure 6 The moving device 71 includes a pneumatic cylinder 711, a hollow plate 712 is arranged at the bottom of the pneumatic cylinder 711, and the bottom of the pneumatic cylinder 711 is fixedly connected to the top of the hollow plate 712, a second sliding rod 713 is arranged at the bottom of the hollow plate 712, and the bottom of the hollow plate 712 is fixedly connected to the top of the second sliding rod 713.
[0020] A fixed block 714 is provided at the output shaft end of the pneumatic cylinder 711, and the output shaft end of the pneumatic cylinder 711 is fixedly connected to the top center of the fixed block 714, L-shaped plates 715 are provided on both sides of the fixed block 714, and both sides of the fixed block 714 are movably connected to the inner side of the L-shaped plate 715, first rotating shafts 716 are provided at the bending parts of the two L-shaped plates 715, and the bending parts of the two L-shaped plates 715 are movably connected to the top of the first rotating shaft 716, and the bottom end of the first rotating shaft 716 is movably connected to the two sides of the bottom of the hollow plate 712, second rotating shafts 717 are provided at the grooves at the upper and lower ends of the two L-shaped plates 715, and the grooves at the upper and lower ends of the two L-shaped plates 715 are movably connected to the top of the second rotating shaft 717, sliding blocks 718 are provided at the bottom ends of the two second rotating shafts 717, and the bottom ends of the two second rotating shafts 717 are movably connected to the grooves at the top of the sliding blocks 718, and the sliding blocks 7 18 is movably connected to the bottom of the second sliding rod 713, and the bottoms of the two sliding blocks 718 are both provided with a forming device 72. By fixing the output shaft end of the pneumatic cylinder 711 with the fixed block 714, when the pneumatic cylinder 711 is pulled upward, the L-shaped plates 715 movably connected on both sides of the fixed block 714 can also be driven to move upward. Under the movement of the first rotating shaft 716, the bending parts of the two L-shaped plates 715 will pull the second rotating shaft 717 movably connected at the groove at the lower end of the L-shaped plate 715 to move toward the center of the hollow plate 712, and the bottom ends of the two second rotating shafts 717 are connected to the sliding blocks 718, so during the movement, the two sliding blocks 718 will follow the L-shaped plate 715 to move together, and finally drive the forming device 72 fixedly connected at the bottom of the sliding block 718 to move above the metal wire mesh, so that the welding machine 727 can quickly adjust the direction during welding. And the bottoms of the two sliding blocks 718 are both fixedly connected to the top of the forming device 72.
[0021] See also Figure 6 The molding device 72 includes a first rotating block 721, the top of the first rotating block 721 is fixedly connected to the bottom of the two sliding blocks 718, a second rotating block 722 is arranged at the bottom groove of the first rotating block 721, and the bottom groove of the first rotating block 721 is movably connected to the top groove of the second rotating block 722, a third rotating block 723 is arranged at the bottom of the second rotating block 722, and the top of the third rotating block 723 is movably connected at the bottom of the second rotating block 722, a fourth rotating block 724 is arranged at the bottom groove of the third rotating block 723, and the bottom groove of the third rotating block 723 is movably connected to the top groove of the fourth rotating block 724.
[0022] A hollow circle 725 is provided at the bottom of the fourth rotating block 724, and the bottom of the fourth rotating block 724 is fixedly connected to the top of the hollow circle 725. Several movable tubes 726 are provided at the center of the bottom of the hollow circle 725, and the center of the bottom of the hollow circle 725 is fixedly connected to the top of several movable tubes 726. A welding machine 727 is provided at the bottom of several movable tubes 726. By providing a second rotating block 722 with a movable connection at the bottom of the first rotating block 721, the folding angle of the second rotating block 722 can be adjusted left and right. The bottom of the second rotating block 722 is movably connected to the top of the third rotating block 723. When the third rotating block 723 drives the movable tube 726 connected at the bottom to rotate, the welding machine 727 at the bottom of several movable tubes 726 will rotate and weld the metal wire mesh, so that the metal wire mesh is evenly stressed in multiple directions. This welding method can enhance the overall performance of the metal wire mesh and make it show better stability and safety in various applications. And the bottom of several movable tubes 726 is fixedly connected to the top of the welding machine 727.
[0023] The fixing device 8 includes several support frames 81, the bottoms of the several support frames 81 are connected to the top of the chopping board 3, the tops of the several support frames 81 are provided with first circular plates 82, and the tops of the several support frames 81 are movably connected to the bottoms of the first circular plates 82, the tops of the first circular plates 82 are provided with several elliptical blocks 83, and the tops of the first circular plates 82 are fixedly connected to the bottoms of the several elliptical blocks 83, movable blocks 84 are provided in the middle of the several elliptical blocks 83, and the middles of the several elliptical blocks 83 are movably connected to the outer sides of the movable blocks 84.
[0024] Gears 85 are provided at the middle grooves of several movable blocks 84, and the middle grooves of several movable blocks 84 are fixedly connected to both sides of the gears 85, threaded rods 86 are provided on the outer surfaces of several gears 85, and the outer surfaces of several gears 85 are meshed and connected with the outer surfaces of the threaded rods 86, and the bottom of the threaded rods 86 is connected to the center of the top of the first circular plate 82, and a second circular plate 89 is provided on the top of the threaded rods 86, and the top of the threaded rods 86 is movably connected to the bottom of the second circular plate 89, and movable rods 87 are provided on the tops of the rear end protrusions of several movable blocks 84, and the tops of the rear end protrusions of several movable blocks 84 are movably connected to one end of the movable rod 87, and the other ends of several movable rods 87 are provided with grippers. By setting a support frame 81 at the bottom of the first circular plate 82, the height of the entire fixing device 8 can be manually adjusted. The outer surfaces of the several gears 85 are meshed and connected with the outer surfaces of the threaded rod 86. When the threaded rod 86 rotates, the gears 85 will drive the movable blocks 84 correspondingly connected on both sides to move up and down, and the movable movable blocks 84 will drive the grippers 88 fixedly connected to the rear end protruding part to shrink toward the center of the second circular plate 89, and finally fix the two sides of the metal wire mesh placed on the top of the second circular plate 89 to provide stable support for the welding process. In addition, the jitter and deviation during the welding process can be greatly reduced, making the weld more uniform and smooth, thereby improving the overall stability of the welding. And the other ends of the several movable rods 87 are movably connected to the protruding part at the bottom of the grippers 88.
[0025] When in use, the connecting round block 5 will first drive the first sliding rod 6 to adjust the appropriate height up and down in the groove of the connecting plate 4 through the power generation of the motor 2. After the metal wire mesh is placed on the top of the fixing device 8 and fixed, the electric welding device 7 movably connected at the front end of the first sliding rod 6 will quickly slide to the top of the fixing device 8 for welding. The electric welding device 7 includes a moving device 71 and a forming device 72. The moving device 71 includes a pneumatic cylinder 711. The output shaft end of the pneumatic cylinder 711 is fixedly connected to a fixed block 714. L-shaped plates 715 are movable on both sides of the fixed block 714. The appearance of the L-shaped plate 715 is curved. When the pneumatic cylinder 711 moves upward, the L-shaped plates 715 on both sides of the fixed block 714 will move upward together through tension. At this time, the second rotating shaft 717 connected to the grooves at the bottom of the two L-shaped plates 715 will continuously move toward the center under the movement of the first rotating shaft 716 at the bend. During the movement, the sliding block 718 connected to the bottom end of the second rotating shaft 717 is also driven to slide toward the center on the outer surface of the second sliding rod 713. Finally, the forming device 72 fixedly connected to the bottom of the two sliding blocks 718 can quickly change position for welding. The forming device 72 includes a first rotating block 721, and the second rotating block 722 movably connected to the bottom protruding part of the first rotating block 721 can be folded left and right at different angles. The bottom end of the second rotating block 722 is movably connected to the top of the third rotating block 723. When the third rotating block 723 drives the movable tube 726 connected to the bottom to rotate, the welding machine 727 located at the bottom of the several movable tubes 726 will rotate in the direction to weld the metal wire mesh. By rotating in the direction of welding, it can adapt to the production needs of metal wire meshes of different specifications and materials. This flexibility makes the application range of the metal wire mesh wider and can meet the specific requirements of various engineering projects. The fixing device 8 includes a support frame 81, and the support frame 81 is movably connected to the first circular plate 82, so the support frame 81 can be manually adjusted to any height, which is convenient for the later placement of different metal meshes. The gears 85 fixedly connected to the centers of several movable blocks 84 have an outer surface meshingly connected to the outer surface of the threaded rod 86. When the threaded rod 86 is rotated by the power generation of the motor 2, the several gears 85 can drive the movable blocks 84 to swing up and down together, and the tops of the raised parts at the rear ends of the several movable blocks 84 are connected to movable rods 87, and the several movable rods 87 are movably connected to the grippers 88, so the movable rods 87 will bring the grippers 88 to shrink and approach the metal mesh above the second circular plate 89. By fixing both sides of the metal mesh, the heat transfer and current distribution during welding can be better controlled, which means that the weld depth and weld width can achieve the expected effect, thereby improving the strength and sealing of the welded joint. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A high-precision metal wire mesh forming welding device, comprising a base (1), a motor (2) fixedly connected to the outer side of the base (1), a cutting board (3) fixedly connected to the top of the base (1), a fixing device (8) connected to the top of the cutting board (3), a connecting plate (4) fixedly connected to the rear side of the cutting board (3), a connecting round block (5) movably connected to the groove of the connecting plate (4), a first sliding rod (6) fixedly connected to the bottom end of the connecting round block (5), and a welding device (7) movably connected to the front end convex part of the first sliding rod (6), characterized in that: The electric welding device (7) comprises a moving device (71) and a forming device (72), wherein the rear end of the moving device (71) is movably connected to the protruding portion of the front end of the first sliding rod (6), so that the moving device (71) can slide back and forth at the front end of the first sliding rod (6), and when the moving device (71) is in the active position, it also drives the forming device (72) connected to the bottom end to move, so that the forming device (72) can change position to weld the metal wire mesh on the top of the fixing device (8); The fixing device (8) comprises a gear (85) and a threaded rod (86); when the gear (85) is rotated by the rotation of the threaded rod (86), the expansion width of a gripper (88) movably connected at one end can be adjusted, so that the gripper (88) can fix metal wire meshes of different areas.
2. The high-precision metal wire mesh forming welding equipment according to claim 1, characterized in that: The moving device (71) comprises a pneumatic cylinder (711), the bottom end of the pneumatic cylinder (711) is fixedly connected to a hollow plate (712), and the bottom of the hollow plate (712) is fixedly connected to a second sliding rod (713).
3. The high-precision metal mesh forming welding equipment according to claim 2, characterized in that: The output shaft end of the pneumatic cylinder (711) is fixedly connected to a fixed block (714), both sides of the fixed block (714) are movably connected to L-shaped plates (715), the bending parts of the two L-shaped plates (715) are movably connected to a first rotating shaft (716), the grooves at the upper and lower ends of the two L-shaped plates (715) are movably connected to a second rotating shaft (717), the bottom ends of the two second rotating shafts (717) are movably connected to a sliding block (718), and the top end of the sliding block (718) is movably connected to the bottom of the second sliding rod (713), and the bottom ends of the two sliding blocks (718) are fixedly connected to a forming device (72).
4. The high-precision metal mesh forming welding equipment according to claim 3, characterized in that: The molding device (72) comprises a first rotating block (721), the top of the first rotating block (721) is fixedly connected to the bottoms of the two sliding blocks (718), the second rotating block (722) is movably connected to the bottom groove of the first rotating block (721), the third rotating block (723) is movably connected to the bottom groove of the second rotating block (722), and the fourth rotating block (724) is movably connected to the bottom groove of the third rotating block (723).
5. The high-precision metal wire mesh forming welding equipment according to claim 4, characterized in that: The bottom of the fourth rotating block (724) is fixedly connected to a hollow circle (725), the center of the bottom of the hollow circle (725) is fixedly connected to a plurality of movable tubes (726), and the bottom ends of the plurality of movable tubes (726) are fixedly connected to welding machines (727).
6. The high-precision metal mesh forming welding equipment according to claim 1, characterized in that: The fixing device (8) comprises a plurality of support frames (81), the bottoms of the plurality of support frames (81) being connected to the top of the chopping board (3), the tops of the plurality of support frames (81) being movably connected to a first circular plate (82), the tops of the first circular plate (82) being fixedly connected to a plurality of elliptical blocks (83), and the middles of the plurality of elliptical blocks (83) being movably connected to a movable block (84).
7. The high-precision metal mesh forming welding equipment according to claim 6, characterized in that: A gear (85) is fixedly connected to the middle groove of the plurality of movable blocks (84), a threaded rod (86) is meshedly connected to the outer surface of the plurality of gears (85), and the bottom of the threaded rod (86) is connected to the center of the top of the first circular plate (82), and the top of the threaded rod (86) is movably connected to the second circular plate (89), and the top of the rear end raised portion of the plurality of movable blocks (84) is movably connected to one end of a movable rod (87), and the other end of the plurality of movable rods (87) is movably connected to a gripper (88).