A vacuum electron beam welding equipment for stainless steel cylinder

Abstract

The present invention discloses a stainless steel cylinder vacuum electron beam welding device, which relates to the technical field of welding equipment, including a welding chassis, a centering assembly is provided on a fixed frame, two symmetrically distributed clamping assemblies are provided on the centering assembly, a plugging head and a stainless steel cylinder are respectively installed on the two clamping assemblies, a fixed plate is fixedly connected to the middle of the outer wall of one side of the sealed box door close to the welding chassis, a grinding assembly is provided on the fixed plate, and the grinding assembly includes a cylinder, which is fixedly installed on the top surface of the fixed plate. The stainless steel cylinder vacuum electron beam welding device disclosed by the present invention has the advantages of relatively simple operation, that is, only the plugging head and the stainless steel cylinder need to be assembled on the clamping assembly, and there is no need to manually grind the welding surface of the plugging head and the stainless steel cylinder in advance, which saves time and labor, and the entire operation is performed outside the welding chassis, which is convenient for observation and operation, and the technical effect of greatly improving the efficiency of the welding operation.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a stainless steel cylinder vacuum electron beam welding device. Background Art

[0002] Vacuum electron beam welding uses a directional, high-speed electron beam to impact the workpiece, converting kinetic energy into heat energy to melt the workpiece and form a weld.

[0003] Austenitic stainless steel is one of the most important types of stainless steel. It has excellent plasticity, toughness, hot and cold processing properties, and corrosion resistance at both high and extremely low temperatures (-196°C). Therefore, large-diameter austenitic stainless steel cylinders are widely used.

[0004] The existing stainless steel cylinder is composed of a cylinder and a plug, which need to be welded by welding equipment, and a vacuum electron beam welding machine is mostly used for welding. After the welding surfaces of the cylinder and the plug are manually polished with sandpaper, the cylinder and the plug are placed in a welding room and the welding surfaces are butt-assembled. The box door is closed and vacuum is evacuated before vacuum electron beam welding is performed. The whole operation is relatively complicated, and the welding surfaces of the cylinder and the plug need to be manually polished in advance, and then the butt-assembly operation is performed inside the welding room. The visibility inside the welding room is poor, which is inconvenient to operate, resulting in low welding efficiency. Summary of the invention

[0005] The invention discloses a stainless steel cylinder vacuum electron beam welding device, which aims to solve the technical problems that the whole welding operation is relatively complicated, the welding surfaces of the cylinder and the plug need to be manually polished in advance, and then the docking and assembly work is carried out inside the welding room, the vision inside the welding room is poor, the operation is inconvenient, and the welding operation efficiency is low.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A stainless steel cylinder vacuum electron beam welding device comprises a welding case, a welding chamber is provided inside the welding case, a sealed case door is sealed inside the welding chamber, a fixed frame is fixedly connected to a fixing frame in the middle of a side close to the welding case, a centering component is provided on the fixing frame, two symmetrically distributed clamping components are provided on the centering component, a plugging head and a stainless steel cylinder are respectively installed on the two clamping components, a fixed plate is fixedly connected to a fixing plate in the middle of a side close to the welding case, a grinding component is provided on the fixing plate, the grinding component comprises a cylinder, and the cylinder is fixedly installed on the top surface of the fixing plate.

[0008] By providing a welding chassis, a welding room, a sealed box door, a fixing frame, a centering component, a clamping component, a plugging head, a stainless steel cylinder, a fixing plate and a grinding component, the plugging head and the stainless steel cylinder are clamped and fixed by two clamping components, the positions of the plugging head and the stainless steel cylinder are adjusted by the centering component, and the welding surfaces of the plugging head and the stainless steel cylinder are grinded by the grinding component. The operation is relatively simple, and the plugging head and the stainless steel cylinder only need to be assembled on the clamping component, and there is no need to manually grind the welding surfaces of the plugging head and the stainless steel cylinder in advance, which saves time and effort. The entire operation is carried out outside the welding chassis, which is convenient for observation and operation, and greatly improves the efficiency of the welding operation.

[0009] The transmission mechanism that the cam is used for the rotation of the transmission gear and the transmission gear of the transmission gear is connected with the transmission gear of the transmission gear of the transmission gear. There are three sliding bases, which are arranged in a circular array, and one sliding base is threadedly connected to the surface of the screw rod three; a side clamping seat is slidably arranged on the top surface of the sliding base, and a plurality of oblique grooves are opened on the top surface of the sliding base, and a plurality of strip blocks corresponding to the oblique grooves are fixedly connected to the bottom surface of the side clamping seat, and the strip blocks are slidably arranged in the oblique grooves, and the outer walls of the moving frame one and the moving frame two are fixedly connected with three guide frames distributed in a circular array, and the side clamping seat is slidably arranged on the surface of the guide frame; a rack one is fixedly connected to the outer wall of the sliding base, and an annular gear is meshed on the surface of the rack one, and the three racks one are distributed in a circular array around the annular gear, and the annular gear is rotatably arranged on the outer walls of the moving frame one and the moving frame two, and two guide rods two are fixedly installed on the outer walls of the moving frame one and the moving frame two, and two sliding bases not connected to the screw rod three are slidably arranged on the surface of the guide rod two, and a plurality of side clamping seats are against the outer walls of the sealing head and the stainless steel cylinder.

[0010] By providing a centering component and a clamping component, the plugging head is placed in one of the ring gears, and the driving motor is started to enable multiple side clamps to clamp the outer wall of the plugging head. The stainless steel cylinder is placed in the ring gear opposite to the plugging head. According to the above operations, the stainless steel cylinder is clamped and fixed. The dual-axis motor is adjusted to change the position of the plugging head and the stainless steel cylinder, which is convenient for grinding and assembling the plugging head and the stainless steel cylinder.

[0011] In a preferred solution, the output end of the cylinder is fixedly connected to a rotating frame, a gear 1 is rotatably provided on the inner wall of the rotating frame, a rack 2 is fixedly installed on the outer wall of the fixed frame, the gear 1 is meshed with the rack 2, and the gear 1 is fixedly connected to one end of the outer wall of the movable frame; a driving motor 2 is fixedly installed inside the movable frame, the power output shaft of the driving motor 2 is connected to a rotating plate through a coupling, a steering plate is rotatably provided on the end of the rotating plate away from the driving motor 2, a gear 2 is rotatably provided on the end of the steering plate away from the rotating plate, a slider is fixedly installed on the outer wall of the gear 2, a slide groove 1 is provided inside the movable frame, and the slider is slidably arranged on the slide Groove one; the surface of the gear two is meshed with a rack three, and the rack three is fixedly connected to the outer wall of the movable frame; the surface of the gear two is meshed with a rack four, and the rack four is slidably set on the outer wall of the movable frame, and the two ends of the outer wall on one side of the rack four are fixedly connected with a connecting rod one, and a sand disk one is fixedly installed on the outer wall of the connecting rod one on a side away from the rack four, and the sand disk one is set on the side of the stainless steel cylinder; the two ends of the outer wall on the side of the rack four away from the connecting rod one are fixedly connected with a connecting rod two, and the outer wall of the connecting rod two away from the rack four is fixedly connected with a sand disk two, and the side of the sand disk two is provided with a sealing head, and a slide groove two is opened inside the movable frame, and the connecting rod two is slidably set inside the slide groove two.

[0012] By providing a grinding component, starting the driving motor 2 makes the sand discs 1 and 2 reciprocate along the welding surface of the plugging head and the stainless steel cylinder, so as to realize the rapid grinding of the welding surface of the plugging head and the stainless steel cylinder. After the grinding is completed, the adjusting cylinder is retracted to move the sand discs 1 and 2 to the upper side of the plugging head and the stainless steel cylinder, which does not affect the welding operation of the plugging head and the stainless steel cylinder, and realizes the rapid grinding of the rapid welding surface.

[0013] From the above, it can be seen that the stainless steel cylinder vacuum electron beam welding equipment provided by the present invention has relatively simple operation. It only needs to assemble the sealing head and the stainless steel cylinder on the clamping assembly. There is no need to manually polish the welding surfaces of the sealing head and the stainless steel cylinder in advance, which saves time and effort. The entire operation is carried out outside the welding chassis, which is convenient for observation and operation, and the technical effect of greatly improving the efficiency of the welding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a stainless steel cylinder vacuum electron beam welding device proposed by the present invention.

[0015] Figure 2 The present invention provides a side view of the sealing box door structure of a stainless steel cylinder vacuum electron beam welding device.

[0016] Figure 3 The present invention provides a side view of the structure of a centering component of a stainless steel cylinder vacuum electron beam welding device.

[0017] Figure 4 The present invention provides a side view of the structure of a movable frame of a stainless steel cylinder vacuum electron beam welding device.

[0018] Figure 5 The present invention provides a side view of the structure of a clamping assembly of a stainless steel cylinder vacuum electron beam welding device.

[0019] Figure 6 The present invention provides a cross-sectional view of the side structure of a fixing frame of a stainless steel cylinder vacuum electron beam welding device.

[0020] Figure 7 The present invention provides a cross-sectional view of the side structure of a movable frame of a stainless steel cylinder vacuum electron beam welding device.

[0021] In the figure: 1, welding chassis; 2, welding room; 3, sealed box door; 4, fixed frame; 5, centering assembly; 501, double-axis motor; 502, connecting rod; 503, screw rod 1; 504, moving frame 1; 505, screw rod 2; 506, moving frame 2; 507, shaft seat; 508, guide rod 1; 6, clamping assembly; 601, driving motor 1; 602, screw rod 3; 603, sliding base; 604, side clamp seat; 605, oblique groove; 606, strip block; 607, guide frame; 608, rack 1; 609, ring gear; 61 0. Guide rod 2; 7. Sealing head; 8. Stainless steel cylinder; 9. Fixed plate; 10. Grinding assembly; 1001. Cylinder; 1002. Rotating frame; 1003. Gear 1; 1004. Rack 2; 1005. Movable frame; 1006. Drive motor 2; 1007. Rotating plate; 1008. Steering plate; 1009. Gear 2; 1010. Slide 1; 1011. Rack 3; 1012. Rack 4; 1013. Connecting rod 1; 1014. Sand disc 1; 1015. Connecting rod 2; 1016. Sand disc 2; 1017. Slide 2. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] The stainless steel cylinder vacuum electron beam welding equipment disclosed in the present invention is mainly used in the scenario where the entire welding operation is relatively complicated and requires manual pre-grinding of the welding surfaces of the cylinder and the plug, and then docking and assembly operations are performed inside the welding room. The visibility inside the welding room is poor, which is inconvenient to operate and leads to low welding operation efficiency.

[0024] Reference Figure 1-Figure 7 A stainless steel cylinder vacuum electron beam welding device comprises a welding chassis 1, a welding chamber 2 is provided inside the welding chassis 1, a sealed box door 3 is sealed inside the welding chamber 2, a fixed frame 4 is fixedly connected to the middle of one side of the sealed box door 3 close to the welding chassis 1, a centering component 5 is provided on the fixed frame 4, the centering component 5 is provided with two symmetrically distributed clamping components 6, a plugging head 7 and a stainless steel cylinder 8 are respectively installed on the two clamping components 6, a fixed plate 9 is fixedly connected to the middle of one side of the sealed box door 3 close to the welding chassis 1, a grinding component 10 is provided on the fixed plate 9, the grinding component 10 comprises a cylinder 1001, and the cylinder 1001 is fixedly installed on the top surface of the fixed plate 9.

[0025] Specifically, two clamping assemblies 6 are used to clamp and fix the plugging head 7 and the stainless steel cylinder 8 respectively, and the centering assembly 5 is adjusted to make the plugging head 7 and the stainless steel cylinder 8 gradually approach each other. When the plugging head 7 and the stainless steel cylinder 8 are in contact with the grinding assembly 10, the grinding assembly 10 is used to grind the welding surface of the plugging head 7 and the stainless steel cylinder 8. After grinding, the welding surface is cleaned, the adjusting cylinder 1001 is contracted, and the centering assembly 5 is continued to be adjusted so that the plugging head 7 and the stainless steel cylinder 8 are docked and assembled together, and then the sealing box door 3 is pushed into the welding chamber 2 and sealed. After vacuuming, the plugging head 7 and the stainless steel cylinder 8 can be vacuum electron beam welded. The whole operation is relatively simple. It only needs to assemble the plugging head 7 and the stainless steel cylinder 8 on the clamping assembly 6. There is no need to manually grind the welding surface of the plugging head 7 and the stainless steel cylinder 8 in advance, which saves time and effort. The whole operation is carried out outside the welding chassis 1, which is convenient for observation and operation, and greatly improves the efficiency of the welding operation.

[0026] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5In a preferred embodiment, the centering component 5 includes a dual-axis motor 501, and the two output shafts of the dual-axis motor 501 are connected to the connecting rod 502 through a coupling transmission, and one end of the connecting rod 502 away from the dual-axis motor 501 is fixedly connected to a screw rod 1 503, and the surface of the screw rod 1 503 is threadedly connected to a movable frame 1 504; the connecting rod 502 away from the screw rod 1 503 is fixedly connected to a screw rod 2 505, and the surface of the screw rod 2 505 is threadedly connected to a movable frame 2 506, and the circumferential surfaces of the ends of the screw rod 1 503 and the screw rod 2 505 away from each other are sleeved with a shaft seat 507, and the two shaft seats 5 07 A guide rod 1 508 is fixedly connected to the outer wall of one side close to each other, and the mobile frame 1 504 and the mobile frame 2 506 are both slidably arranged on the surface of the guide rod 1 508; In a preferred embodiment, a clamping assembly 6 is arranged on the outer wall of the one side close to each other of the mobile frame 1 504 and the mobile frame 2 506, and the clamping assembly 6 includes a drive motor 1 601, and the drive motor 1 601 is fixedly installed on the outer wall of the mobile frame 1 504 and the mobile frame 2 506, and the power output shaft of the drive motor 1 601 is connected to the screw rod 3 602 through a coupling transmission, and the outer wall of the mobile frame 1 504 and the mobile frame 2 506 is both slidably arranged on the surface of the guide rod 1 508. The movable frame 504 is provided with three sliding bases 603, and the three sliding bases 603 are arranged in a circular array, one of the sliding bases 603 is threadedly connected to the surface of the screw rod 3 602; the top surface of the sliding base 603 is slidably provided with a side clamping seat 604, and the top surface of the sliding base 603 is provided with a plurality of oblique grooves 605, and the bottom surface of the side clamping seat 604 is fixedly connected with a plurality of strip blocks 606 corresponding to the oblique grooves 605, and the strip blocks 606 are slidably arranged in the oblique grooves 605, and the outer walls of the movable frame 1 504 and the movable frame 2 506 are fixedly connected with three guide frames 607 distributed in a circular array, and the side clamping seat 604 slides It is arranged on the surface of the guide frame 607; the outer wall of the sliding base 603 is fixedly connected with a rack 1 608, and the surface of the rack 1 608 is meshed with a ring gear 609, and three rack 1s 608 are distributed in a circular array around the ring gear 609, and the ring gear 609 is rotatably arranged on the outer walls of the moving frame 1 504 and the moving frame 2 506, and the outer walls of the moving frame 1 504 and the moving frame 2 506 are fixedly installed with two guide rods 2 610, and two sliding bases 603 that are not connected to the screw rod 3 602 are slidably arranged on the surface of the guide rod 2 610, and a plurality of side clamp seats 604 are against the outer walls of the sealing head 7 and the stainless steel cylinder 8.

[0027] Specifically, the plugging head 7 is placed in one of the ring gears 609, and the driving motor 1 601 is started to rotate the screw rod 3 602, which drives one of the sliding bases 603 to move, and the rack 1 608 is meshed with the ring gear 609. When the sliding base 603 moves, the ring gear 609 is driven to rotate, and then the other two sliding bases 603 are moved, and the side clamping seat 604 slides along the inside of the oblique groove 605 through the bar block 606, and the guide frame 607 is used to The side clamp seat 604 pulls and guides, so that multiple side clamp seats 604 clamp the outer wall of the plugging head 7, and then the stainless steel cylinder 8 is placed in the ring gear 609 opposite to the plugging head 7. According to the above operation, the stainless steel cylinder 8 is clamped and fixed, and the dual-axis motor 501 is driven to make the two connecting rods 502 rotate at the same time, so that the movable frame 1 504 and the movable frame 2 506 slide along the surface of the screw rod 1 503 and the screw rod 2 505, so as to adjust the position of the plugging head 7 and the stainless steel cylinder 8.

[0028] It should be noted that the thread structures of the screw rod 1 503 and the screw rod 2 505 are in opposite directions. When the dual-axis motor 501 is driven, the moving frame 1 504 and the moving frame 2 506 move in opposite directions.

[0029] Reference Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7In a preferred embodiment, the output end of the cylinder 1001 is fixedly connected to a rotating frame 1002, and a gear 1003 is rotatably provided on the inner wall of the rotating frame 1002. A rack 1004 is fixedly installed on the outer wall of the fixed frame 4, and the gear 1003 is meshed with the rack 1004, and the gear 1003 is fixedly connected to one end of the outer wall of the movable frame 1005; a driving motor 1006 is fixedly installed inside the movable frame 1005, and the power output shaft of the driving motor 1006 is connected to a rotating plate 1007 through a coupling transmission, and a steering plate 1008 is rotatably provided on the end of the rotating plate 1007 away from the driving motor 1006, and a gear 2 1009 is rotatably provided on the end of the steering plate 1008 away from the rotating plate 1007, and a slider is fixedly installed on the outer wall of the gear 2 1009, and a slide groove 1010 is opened inside the movable frame 1005, and the slider is slidably arranged in the slide groove 1010 The surface of the gear 2 1009 is meshed with a rack 3 1011, and the rack 3 1011 is fixedly connected to the outer wall of the movable frame 1005. The surface of the gear 2 1009 is meshed with a rack 4 1012, and the rack 4 1012 is slidably arranged on the outer wall of the movable frame 1005, and the two ends of the outer wall of one side of the rack 4 1012 are fixedly connected with a connecting rod 1013, and the outer wall of the connecting rod 1013 away from the side of the rack 4 1012 is fixedly installed with a sand tray 1014, Sand disc 1014 is arranged on the side of the stainless steel cylinder 8; both ends of the outer wall of the rack 4 1012 on the side away from the connecting rod 1 1013 are fixedly connected with connecting rod 2 1015, and the outer wall of the connecting rod 2 1015 on the side away from the rack 4 1012 is fixedly connected with sand disc 2 1016, and the sand disc 2 1016 is arranged on the side of the sealing head 7, and a slide groove 2 1017 is opened inside the movable frame 1005, and the connecting rod 2 1015 is slidably arranged inside the slide groove 2 1017.

[0030] Specifically, when the plugging head 7 and the stainless steel cylinder 8 are in contact with the sand tray 1 1014 and the sand tray 2 1016 respectively, the driving motor 2 1006 is started to rotate the rotating plate 1007, and the steering plate 1008 drives the gear 2 1009 to slide along the slide groove 1010, and the gear 2 1009 is meshed with the rack 3 1011 and the rack 4 1012, and the rack 3 1011 is fixed on the movable frame 1005, and the rack 4 1012 is movably arranged on the movable frame 1005, so that the gear 2 1009 rotates and drives the rack 4 1012 to reciprocate along the outer wall of the movable frame 1005, and the sand tray 1 1014 and the sand tray 2 1016 reciprocate along the welding surface of the plugging head 7 and the stainless steel cylinder 8, so as to realize the plugging of the plugging head 7 and The welding surface of the stainless steel cylinder 8 is quickly polished. After the polishing is completed, the regulating cylinder 1001 is retracted to move the movable frame 1005 to the side of the sealing box door 3. The gear 1003 is meshed with the rack 2 1004, so that the gear 1003 drives the movable frame 1005 to flip upward, and the sand tray 1 1014 and the sand tray 2 1016 are moved to the upper side of the sealing head 7 and the stainless steel cylinder 8 without affecting the welding operation of the sealing head 7 and the stainless steel cylinder 8. Then the dual-axis motor 501 is continued to be driven to make the sealing head 7 and the stainless steel cylinder 8 docked and assembled together, and the sealing box door 3 is pushed to seal the welding chamber 2. After vacuuming, the sealing head 7 and the stainless steel cylinder 8 can be vacuum electron beam welded. The operation is simple and the welding efficiency is high.

[0031] Working principle: Place the plugging head 7 in one of the annular gears 609, start the driving motor 1 601 to rotate the screw 3 602, the screw 3 602 drives one of the sliding bases 603 to move, the rack 1 608 is meshed with the annular gear 609, when the sliding base 603 moves, the annular gear 609 is driven to rotate, and then the other two sliding bases 603 are moved, the side clamping seat 604 slides along the inside of the oblique groove 605 through the bar block 606, and the guide frame 607 is used to pull and guide the side clamping seat 604, so that multiple side clamping seats 604 are pressed against the outer wall of the plugging head 7. The stainless steel cylinder 8 is clamped, and then the stainless steel cylinder 8 is placed in the ring gear 609 opposite to the plugging head 7. According to the above operation, the stainless steel cylinder 8 is clamped and fixed, and the dual-axis motor 501 is driven to rotate the two connecting rods 502 at the same time, so that the moving frame 1 504 and the moving frame 2 506 slide along the surface of the screw rod 1 503 and the screw rod 2 505. When the plugging head 7 and the stainless steel cylinder 8 are respectively in contact with the sand plate 1 1014 and the sand plate 2 1016, the driving motor 2 1006 is started to rotate the rotating plate 1007, and the steering plate 1008 drives the gear 2 1009 along the slide groove 1010. The gear 2 1009 is meshed with the rack 3 1011 and the rack 4 1012, the rack 3 1011 is fixed on the movable frame 1005, and the rack 4 1012 is movably arranged on the movable frame 1005, so that the gear 2 1009 rotates and drives the rack 4 1012 to reciprocate along the outer wall of the movable frame 1005, and the sand tray 1 1014 and the sand tray 2 1016 reciprocate along the welding surface of the plugging head 7 and the stainless steel cylinder 8 to achieve rapid grinding of the welding surface of the plugging head 7 and the stainless steel cylinder 8. After grinding, the regulating cylinder 1001 is retracted to make the movable frame 1005 move toward the sealing box One side of the door 3 moves, and the gear 1 1003 is meshed with the rack 2 1004, so that the gear 1003 drives the movable frame 1005 to flip upward, and the sand tray 1 1014 and the sand tray 2 1016 move to the upper side of the sealing head 7 and the stainless steel cylinder 8 without affecting the welding operation of the sealing head 7 and the stainless steel cylinder 8, and then continue to drive the dual-axis motor 501 to make the sealing head 7 and the stainless steel cylinder 8 docked and assembled together, and push the sealing box door 3 to seal the welding chamber 2. After vacuuming, the sealing head 7 and the stainless steel cylinder 8 can be vacuum electron beam welded, which is simple to operate and has high welding efficiency.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stainless steel cylinder vacuum electron beam welding device, comprising a welding chassis (1), characterized in that: A welding chamber (2) is provided inside the welding machine box (1), and a sealed chamber door (3) is sealed inside the welding chamber (2). A fixing frame (4) is fixedly connected to the middle of a side of the sealed chamber door (3) close to the welding machine box (1), and a centering component (5) is provided on the fixing frame (4). Two symmetrically distributed clamping components (6) are provided on the centering component (5), and a plugging head (7) and a stainless steel cylinder (8) are respectively installed on the two clamping components (6). A fixing plate (9) is fixedly connected to the middle of a side of the sealed chamber door (3) close to the welding machine box (1), and a grinding component (10) is provided on the fixing plate (9). The grinding component (10) comprises a cylinder (1001), and the cylinder (1001) is fixedly mounted on the top surface of the fixed plate (9), the output end of the cylinder (1001) is fixedly connected to a rotating frame (1002), the inner wall of the rotating frame (1002) is rotatably provided with a gear 1 (1003), the outer wall of the fixed frame (4) is fixedly mounted with a rack 2 (1004), the gear 1 (1003) is meshed with the rack 2 (1004), and the gear 1 (1003) is fixedly connected to one end of the outer wall of the movable frame (1005), the interior of the movable frame (1005) is fixedly mounted with a driving motor 2 (1006), the power output shaft of the driving motor 2 (1006) is connected to a rotating plate (1007) through a coupling, and the rotating plate (1007) is away from the driving motor 2 (1006). 06) is rotatably provided with a steering plate (1008), and the steering plate (1008) is rotatably provided with a gear 2 (1009) at one end away from the rotating plate (1007), and a slider is fixedly installed on the outer wall of the gear 2 (1009), and a slide groove (1010) is opened inside the movable frame (1005), and the slider is slidably provided in the slide groove (1010), and the surface of the gear 2 (1009) is meshed with a rack 3 (1011), and the rack 3 (1011) is fixedly connected to the outer wall of the movable frame (1005), and the surface of the gear 2 (1009) is meshed with a rack 4 (1012), and the rack 4 (1012) is slidably provided on the outer wall of the movable frame (1005), and one side of the rack 4 (1012) Connecting rod 1 (1013) is fixedly connected to both ends of the outer wall, and a sand disk 1 (1014) is fixedly installed on the outer wall of the connecting rod 1 (1013) on the side away from the rack 4 (1012). The sand disk 1 (1014) is arranged on the side of the stainless steel cylinder (8). Connecting rod 2 (1015) is fixedly connected to both ends of the outer wall of the rack 4 (1012) on the side away from the connecting rod 1 (1013). The connecting rod 2 (1015) is fixedly connected to the outer wall of the rack 4 (1012) on the side away from the rack 4 (1012). The side of the sand disk 2 (1016) is provided with a plugging head (7). A sliding groove 2 (1017) is opened inside the movable frame (1005), and the connecting rod 2 (1015) is slidably arranged inside the sliding groove 2 (1017); The centering assembly (5) comprises a dual-axis motor (501), wherein the two output shafts of the dual-axis motor (501) are both connected to a connecting rod (502) via a coupling transmission, wherein one end of the connecting rod (502) away from the dual-axis motor (501) is fixedly connected to a screw rod 1 (503), and the surface of the screw rod 1 (503) is threadedly connected to a movable frame 1 (504); A screw rod 2 (505) is fixedly connected to another connecting rod (502) away from the screw rod 1 (503), and a movable frame 2 (506) is threadedly connected to the surface of the screw rod 2 (505), and a shaft seat (507) is sleeved on the circumferential surface of the ends of the screw rod 1 (503) and the screw rod 2 (505) away from each other, and a guide rod 1 (508) is fixedly connected to the outer wall of the side where the two shaft seats (507) are close to each other, and the movable frame 1 (504) and the movable frame 2 (506) are both slidably arranged on the surface of the guide rod 1 (508); A clamping assembly (6) is provided on the outer wall of the moving frame 1 (504) and the moving frame 2 (506) on one side close to each other, and the clamping assembly (6) includes a driving motor 1 (601), and the driving motor 1 (601) is fixedly installed on the outer wall of the moving frame 1 (504) and the moving frame 2 (506), and the power output shaft of the driving motor 1 (601) is connected to the screw rod 3 (602) through a coupling transmission, and three sliding bases (603) are slidably provided on the outer wall of the moving frame 1 (504) and the moving frame 2 (506), and the three sliding bases (603) are arranged in a circular array, and one of the sliding bases (603) is threadedly connected to the surface of the screw rod 3 (602); The top surface of the sliding base (603) is slidably provided with a side clamping seat (604), and the top surface of the sliding base (603) is provided with a plurality of oblique grooves (605), the bottom surface of the side clamping seat (604) is fixedly connected with a plurality of strip blocks (606) corresponding to the oblique grooves (605), the strip blocks (606) are slidably provided in the oblique grooves (605), the outer walls of the mobile frame 1 (504) and the mobile frame 2 (506) are both fixedly connected with three guide frames (607) distributed in a circumferential array, and the side clamping seat (604) is slidably provided on the surface of the guide frame (607); The outer wall of the sliding base (603) is fixedly connected to a rack one (608), the surface of the rack one (608) is meshed with a ring gear (609), three racks one (608) are distributed in a circular array around the ring gear (609), the ring gear (609) is rotatably arranged on the outer walls of the moving frame one (504) and the moving frame two (506), the outer walls of the moving frame one (504) and the moving frame two (506) are fixedly installed with two guide rods two (610), two sliding bases (603) not connected to the screw rod three (602) are slidably arranged on the surface of the guide rod two (610), and a plurality of side clamping seats (604) are against the outer walls of the plugging head (7) and the stainless steel cylinder (8).

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