An inner tearing paper tube end sealing mechanism

Abstract

The utility model discloses an inner tear type paper tube end part sealing mechanism, including the sealing cover, the one side of sealing cover is equipped with the connecting sleeve, the one side of connecting sleeve is equipped with the lock sleeve, the inside of lock sleeve is equipped with the lock rod, the outside of lock sleeve is equipped with the change sleeve, the inside of change sleeve is equipped with the change groove, is equipped with the change board in the change groove, the outside of lock sleeve is equipped with the fastening sleeve, the one side of change sleeve is equipped with the fastening frame, is equipped with the fastening rod in fastening frame, the outside of lock sleeve rotatory installation is equipped with the operating board, the one side of operating board is equipped with the coordination piece, the outside of lock sleeve is equipped with the matching piece, is equipped with the coordination spring between coordination piece and matching piece, the outside of fastening rod movable sleeve is equipped with the limit spring, the outside of lock sleeve is equipped with a plurality of fastening grooves that have been set up, the one side of fastening sleeve is equipped with the vertical board, is equipped with the horizontal board on vertical board, is equipped with the operation groove on operating board, the outside of lock rod is equipped with the lock groove, the one side of change board is equipped with the lock piece, the utility model discloses has realized to the tool -free convenient dismounting of sealing cover to the installation stability of sealing cover has been ensured.

Description

Technical Field

[0001] This utility model relates to the field of internal tear-type paper tube end sealing technology, and more specifically, it relates to an internal tear-type paper tube end sealing mechanism. Background Technology

[0002] The internal tear-off paper tube end sealing mechanism is widely used in various industrial production fields that require paper tube packaging, such as food packaging, chemical materials, pharmaceuticals, and building materials. Therefore, as a key piece of equipment in the paper tube packaging production line, the sealing mechanism needs to adapt to paper tube products of different specifications and wall thicknesses, and adjust and maintain the equipment according to production needs and product specification changes. In the existing technology, the sealing sleeve pushes the conveyed and stretched sealing film off and wraps the sealing film around the end of the paper tube to achieve end sealing. However, since there are various specifications of paper tube diameter, the sealing sleeve needs to be replaced to match the requirements of paper tubes of different diameters. However, in the existing technology, the disassembly and assembly of the sealing sleeve usually requires the assistance of various professional tools such as wrenches, Allen wrenches, and special disassembly and assembly pliers. The operation is cumbersome, and if the tool model is incompatible, or if the tool is incomplete, or if the tool is damaged or lost during production, the on-site operator may not be able to disassemble and replace the sealing sleeve in time, causing problems such as production line downtime, product specification switching delays, and failure to deliver batch orders on time.

[0003] Secondly, although some improved paper tube sealing equipment has achieved convenient disassembly and replacement of the sealing sleeve through the establishment of some devices, these quick connection structures generally have technical defects such as inadequate design considerations and poor stability. Their overall structure is simple and lacks stability. In the continuous packaging production process, these simple connection structures are easily affected by a variety of adverse external forces, such as the inertial impact generated by the reciprocating motion of the sealing sleeve, the reaction force formed by the tensile resistance of the sealing film, and the mechanical impact transmitted by the vibration of the paper tube conveying system. This causes the sealing sleeve fixing structure to gradually loosen, and even equipment failures such as the sealing sleeve suddenly falling off under high-load continuous production conditions. This not only leads to direct production losses such as unstable sealing quality, waste of sealing film, and damage to paper tubes, but may also cause a series of chain problems such as the falling sealing sleeve hitting other parts, sealing film winding equipment mechanism, emergency shutdown of production line, and unqualified product batches. Utility Model Content

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides an internal tear-type paper tube end sealing mechanism to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: an internal tear-type paper tube end sealing mechanism, comprising a sealing sleeve, a connecting sleeve connected to one side of the sealing sleeve, a locking sleeve detachably provided to one side of the connecting sleeve, a locking rod detachably provided inside the locking sleeve, a changing sleeve rotatably fitted outside the locking sleeve, a changing groove formed by a changing diameter on the inner side of the changing sleeve, a changing plate slidably provided in the changing groove, a fastening sleeve fitted outside the locking sleeve, a fastening frame fixedly provided to one side of the changing sleeve, a fastening rod slidably provided in the fastening frame, an operating plate rotatably mounted outside the locking sleeve, and a fixed connection to one side of the operating plate. The device includes a coordinating block, a matching block fixedly mounted on the outer side of the locking sleeve, a coordinating spring connecting the coordinating block and the matching block, a limiting spring movably mounted on the outer side of the fastening rod, multiple fastening grooves on the outer side of the locking sleeve, a rounded corner design at one end of the fastening rod and the inner edge of the fastening groove, one end of the fastening rod being inserted into the fastening groove, a vertical plate fixedly connected to one side of the fastening sleeve, a horizontal plate fixedly mounted on the vertical plate, three horizontal plates, an operating groove on the operating plate, a locking groove on the outer side of the locking rod, and a locking block fixedly connected to one side of the changing plate, the locking block being engaged in the locking groove.

[0006] The present invention is further configured such that a bracket is provided below the sealing sleeve, a slide rail is detachably provided on the bracket, a slider is slidably provided on the slide rail, a movable frame is detachably provided on the slider, a movable rod is detachably provided in the movable frame, a connecting block is fixedly connected to one end of the movable rod, the connecting block is detachably inserted into the connecting sleeve, a rack is detachably provided on one side of the bracket, a motor is detachably provided on the movable frame, a gear is connected to the output end of the motor, and the gear meshes with the rack.

[0007] The present invention is further configured such that a linkage spring is movably sleeved on the outer side of the upright plate, and one end of the linkage spring is connected to the fastening sleeve.

[0008] The present invention is further configured such that a fastening plate is fixedly connected to one end of the fastening rod, and the two ends of the limiting spring are respectively connected to the fastening plate and the fastening frame.

[0009] The present invention is further configured such that a coordinating rod is connected to one side of the coordinating block, a coordinating hole is opened in the matching block, the coordinating spring is movably sleeved on the outside of the coordinating rod, and one end of the coordinating rod slides into the coordinating hole.

[0010] The present invention is further configured such that a thrust bearing is detachably provided on one side of the operation panel, and the other end of the linkage spring is connected to the thrust bearing.

[0011] The present invention is further configured such that a sliding groove is provided on the outer side of the locking sleeve, a sliding block is slidably provided in the sliding groove, and the sliding block is fixedly provided on the inner side of the fastening sleeve.

[0012] The present invention is further configured such that a receiving groove is provided on the outer side of the locking sleeve, and a movable spring is movably provided in the receiving groove, with both ends of the movable spring connected to the inner wall of the receiving groove and one side of the transformation plate, respectively.

[0013] (III) Beneficial Effects Compared with the prior art, this utility model provides an internal tear-type paper tube end sealing mechanism, which has the following beneficial effects: 1. By designing and coordinating components such as the changing sleeve, changing groove, changing plate, locking block, locking groove, and locking sleeve, a tool-free disassembly and assembly system has been constructed. This solves the technical problem in existing technologies where changing the sealing sleeve of an internal tear-type paper tube end sealing mechanism requires the assistance of various professional tools such as wrenches, Allen wrenches, and special disassembly pliers. Operators only need to manually rotate the changing sleeve forward, while the changing groove rotates, causing the changing plate to slide under the action of the movable spring, which drives the locking block to disengage from the locking groove, ultimately achieving convenient removal of the locking rod and locking sleeve. This simple and intuitive manual operation method allows production line operators to quickly change the sealing sleeve to adapt to the requirements of paper tubes of different diameters without carrying any professional tools. This avoids disassembly and assembly difficulties caused by incompatible tool models, incomplete tool equipment, or damage or loss during production, improving the efficiency of production line equipment adjustment and the speed of product specification switching. Especially in the multi-variety, small-batch production mode, it can ensure that the sealing mechanism can be quickly adapted to the required position, effectively guaranteeing the on-time delivery of batch orders and the smooth execution of production plans, and improving the flexibility and economic benefits of paper tube packaging production.

[0014] 2. Through multiple structural designs, including the insertion and locking of the fastening rod and fastening groove, the positioning mechanism of the operating groove and the horizontal plate, the elastic support of the thrust bearing and the linkage spring, and the precision guidance of the sliding block and the sliding groove, a shock-resistant and anti-loosening locking protection system is constructed. This effectively solves the technical defects of insufficient stability of the quick connection structure in existing improved paper tube sealing equipment. When the locking block is engaged in the locking groove, the fastening rod is simultaneously inserted into the fastening groove and limited by the inner wall of the fastening sleeve, preventing the fastening frame from rotating accidentally. The operating plate locks the fastening sleeve in a fixed position through the misalignment of the operating groove and the horizontal plate. This multi-layered locking protection design can effectively resist the inertial impact generated by the high-frequency reciprocating motion of the sealing sleeve. The system effectively mitigates the impact of various adverse external forces, such as the reaction force generated by the tensile resistance of the sealing film and the mechanical impact transmitted by the vibration of the paper tube conveying system. This ensures the stability and reliability of the fixing structure, eliminating the potential equipment failure caused by the gradual loosening of the sealing sleeve fixing structure or even sudden detachment under high-load continuous production conditions. It avoids direct production losses such as unstable sealing quality, waste of sealing film, and damage to paper tubes, as well as a series of chain problems such as the detached sealing sleeve impacting other components, sealing film winding equipment mechanisms, emergency shutdown of the production line, and unqualified product batches. This improves the stability and reliability of the sealing of the paper tube ends, ensuring the continuous and stable operation of the packaging production line and the consistency of product quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an internal tear-type paper tube end sealing mechanism of this utility model; Figure 2 This is a schematic diagram of the dispersed structure of the movable rod, movable frame, and sealing sleeve in this utility model; Figure 3 This is a cross-sectional structural diagram of the locking sleeve, fastening sleeve, locking rod, locking block, changing sleeve and operating plate in this utility model; Figure 4 This is a schematic diagram of the dispersed structure of the locking sleeve, fastening sleeve, locking block, changing sleeve, and operating plate in this utility model; Figure 5 This is a schematic diagram of the dispersed structure of the locking sleeve and the changing sleeve in this utility model.

[0016] In the diagram: 1. Sealing sleeve; 2. Connecting sleeve; 3. Locking sleeve; 4. Locking rod; 5. Changing sleeve; 6. Changing groove; 7. Changing plate; 8. Fastening sleeve; 9. Fastening frame; 10. Fastening rod; 11. Operating plate; 12. Coordinating block; 13. Matching block; 14. Coordinating spring; 15. Restricting spring; 16. Fastening groove; 17. Upright plate; 18. Horizontal plate; 19. Operating groove; 20. Locking groove; 21. Locking block; 22. Bracket; 23. Slide rail; 24. Slider; 25. Moving frame; 26. Moving rod; 27. Connecting block; 28. Rack; 29. ​​Motor; 30. Gear; 31. Linkage spring; 32. Fastening plate; 33. Coordinating rod; 34. Coordinating hole; 35. Thrust bearing; 36. Sliding groove; 37. Sliding block; 38. Receiving groove; 39. Movable spring. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0020] Please see Figures 1-5A tear-off paper tube end sealing mechanism includes a sealing sleeve 1, a connecting sleeve 2 connected to one side of the sealing sleeve 1, a locking sleeve 3 detachably connected to one side of the connecting sleeve 2, a locking rod 4 detachably connected to the inner side of the locking sleeve 3, a changing sleeve 5 rotatably fitted to the outer side of the locking sleeve 3, a changing groove 6 with a changing diameter on the inner side of the changing sleeve 5, a changing plate 7 slidably mounted in the changing groove 6, a fastening sleeve 8 fitted to the outer side of the locking sleeve 3, a fastening frame 9 fixedly mounted to one side of the changing sleeve 5, a fastening rod 10 slidably mounted in the fastening frame 9, an operating plate 11 rotatably mounted to the outer side of the locking sleeve 3, a coordinating block 12 fixedly connected to one side of the operating plate 11, and a matching block 1 fixedly mounted to the outer side of the locking sleeve 3. 3. A coordinating spring 14 is provided between the coordinating block 12 and the matching block 13. A limiting spring 15 is movably sleeved on the outside of the fastening rod 10. Multiple fastening grooves 16 are opened on the outside of the locking sleeve 3. One end of the fastening rod 10 and the inner edge of the fastening groove 16 are both designed with rounded corners. One end of the fastening rod 10 is inserted into the fastening groove 16. An upright plate 17 is fixedly connected to one side of the fastening sleeve 8. A horizontal plate 18 is fixedly provided on the upright plate 17. There are three horizontal plates 18. An operating groove 19 is opened on the operating plate 11. A locking groove 20 is opened on the outside of the locking rod 4. A locking block 21 is fixedly connected to one side of the changing plate 7. The locking block 21 is inserted into the locking groove 20.

[0021] A bracket 22 is provided below the sealing sleeve 1. A slide rail 23 is detachably provided on the bracket 22. A slider 24 is slidably provided on the slide rail 23. A movable frame 25 is detachably provided on the slider 24. A movable rod 26 is detachably provided in the movable frame 25. A connecting block 27 is fixedly connected to one end of the movable rod 26. The connecting block 27 can be detachably inserted into the connecting sleeve 2. A rack 28 is detachably provided on one side of the bracket 22. A motor 29 is detachably provided on the movable frame 25. A gear 30 is connected to the output end of the motor 29. The gear 30 meshes with the rack 28.

[0022] In this embodiment, when the sealing sleeve 1 needs to be removed, the operating plate 11 is first rotated forward, causing the operating plate 11 to drive the coordinating block 12 on one side to rotate forward. Then, the coordinating block 12 will drive the coordinating rod 33 on one side to rotate forward along the coordinating hole 34. The coordinating block 12 will cooperate with the matching block 13 to squeeze the coordinating spring 14. At the same time, the operating plate 11 will drive the operating groove 19 and the thrust bearing 35 on one side to rotate forward. When the coordinating spring 14 is squeezed to the limit, the operating groove 19 will rotate to the position corresponding to the horizontal plate 18. Then, the fastening sleeve 8 is pushed. The fastening sleeve 8 will drive the inner sliding block 37 to slide along the sliding groove 36. The fastening sleeve 8 will also simultaneously drive the upright plate 17 and the horizontal plate 18 on one side to slide forward. The plate gradually slides into the operating groove 19. At the same time, the fastening sleeve 8 cooperates with the operating plate 11 to compress the linkage spring 31 sleeved on the outside of the upright plate 17. When the linkage spring 31 is compressed to its limit, the horizontal plate 18 closest to the fastening sleeve 8 just slides through the operating groove 19 and moves to the other side of the operating plate 11. Then the operating plate 11 is released, and the coordinating spring 14 will reset and push the coordinating block 12, so that the coordinating block 12 drives the coordinating rod 33 on one side to rotate in the opposite direction along the coordinating hole 34 to reset. The coordinating block 12 will also drive the operating groove 19 and the thrust bearing 35 on one side to rotate in the opposite direction to reset through the operating plate 11, so that the operating groove 19 rotates to a position that does not correspond to the horizontal plate 18. At this time, the upright plate 17 cooperates with the horizontal plate 18 at this point. The fastening sleeve 8 is positioned to one side of the operating plate 11, so that the fastening sleeve 8 no longer restricts the outer wall of the fastening plate 32. Then, the changing sleeve 5 is rotated forward. The changing sleeve 5 will drive one side of the fastening frame 9 to rotate forward. Then, the fastening frame 9 will drive the fastening rod 10, the fastening plate 32, and the limiting spring 15 to rotate forward. Then, the inner wall of the fastening groove 16 will press against one end of the fastening rod 10. Due to the rounded corner structure design at the edge of the inner wall of the fastening groove 16, one end of the fastening rod 10 will gradually slide out of the fastening groove 16. At the same time, the fastening rod 10 will drive the fastening plate 32 connected to the other end to slide outward, and the fastening plate 32 will drive the limiting spring 15 to stretch outward. Meanwhile, the changing sleeve 5 will drive the changing groove with a variable diameter on the inner side. 6. Rotate forward so that the wider side of the inner wall of the transformation groove 6 corresponds to the position of the transformation plate 7. During this rotation, the movable spring 39 set in the receiving groove 38 will gradually return to its original position, so that the movable spring 39 pushes the transformation plate 7 outward, thereby keeping the outer wall of the transformation plate 7 in contact with the inner wall of the transformation groove 6. At the same time, the transformation plate 7 will drive one side of the locking block 21 to slide outward, so that the locking block 21 disengages from the locking groove 20. Then, the locking sleeve 3 is pulled to one side, so that the locking sleeve 3 is removed from the outside of the locking rod 4. Then, the locking rod 4 is pulled to the other side to remove the locking rod 4 and the locking sleeve 3. Then, the other locking sleeve 3 and the locking rod 4 are removed by referring to the above process. Then, the sealing sleeve 1 can be removed.

[0023] Please see Figures 3-5As a further implementation of the overall equipment: a linkage spring 31 is movably sleeved on the outside of the upright plate 17, and one end of the linkage spring 31 is connected to the fastening sleeve 8. One end of the fastening rod 10 is fixedly connected to a fastening plate 32, and the two ends of the limiting spring 15 are respectively connected to the fastening plate 32 and the fastening frame 9.

[0024] A coordinating rod 33 is connected to one side of the coordinating block 12, and a coordinating hole 34 is opened in the matching block 13. The coordinating spring 14 is movably sleeved on the outside of the coordinating rod 33, and one end of the coordinating rod 33 slides into the coordinating hole 34.

[0025] A thrust bearing 35 is detachably provided on one side of the control panel 11, and the other end of the linkage spring 31 is connected to the thrust bearing 35.

[0026] A sliding groove 36 is provided on the outer side of the locking sleeve 3, and a sliding block 37 is slidably provided in the sliding groove 36. The sliding block 37 is fixedly provided on the inner side of the fastening sleeve 8.

[0027] The outer side of the locking sleeve 3 is provided with a receiving groove 38, and a movable spring 39 is movably provided in the receiving groove 38. The two ends of the movable spring 39 are respectively connected to the inner wall of the receiving groove 38 and one side of the transformation plate 7.

[0028] More specifically, when the sealing sleeve 1 needs to be reinstalled, first install the sealing sleeve 1 onto one side of the moving rod 26, so that the connecting sleeve 2 connected to one side of the sealing sleeve 1 fits onto the outside of the connecting block 27. Then, the locking rod 4 passes through the pre-reserved installation holes of the connecting block 27 and the connecting sleeve 2 from one side. Then, the locking sleeve 3 fits onto the outside of the locking rod 4 from the other side. Then, rotate the changing sleeve 5 in the opposite direction. The changing sleeve 5 will drive the fastening bracket 9 on one side to rotate in the opposite direction. Then, the fastening bracket 9 will drive the fastening rod 10, the fastening plate 32, and the limiting spring 15 to rotate in the opposite direction. At the same time, the changing sleeve 5 will drive the inner diameter-changing groove 6 to rotate in the opposite direction, so that the inner wall of the changing groove 6 gradually applies pressure to the outer wall of the changing plate 7. Then, the changing plate 7 will rotate in the opposite direction. The reverse movement and reset in slot 6 causes the changing plate 7 to slide the locking block 21 inward, and the changing plate 7 will gradually press the movable spring 39 into the receiving slot 38. At the same time, the changing plate 7 will drive one side of the locking block 21 to re-lock into the locking slot 20. At this time, the fastening bracket 9 drives the fastening rod 10 and other components to rotate and reset to the original position corresponding to the fastening slot 16. Then, the limiting spring 15 resets and pulls the fastening plate 32, causing the fastening plate 32 to drive the fastening rod 10 to slide inward and reset. Then, one end of the fastening rod 10 will be reinserted into the original fastening slot 16. Then, the operating plate 11 is rotated forward again, and the operating plate 11 will drive one side of the coordinating block 12 to rotate forward again. Then, the coordinating block 12 will drive one side of the coordinating rod 3 to rotate forward again. 3. Rotate forward along the coordinating hole 34, and the coordinating block 12 will once again cooperate with the matching block 13 to squeeze the coordinating spring 14. At the same time, the operating plate 11 will once again drive the operating groove 19 and the thrust shaft on one side to rotate forward. When the operating groove 19 rotates to the position corresponding to the horizontal plate 18, the linkage spring 31 pushes the fastening sleeve 8 to drive the inner sliding block 37 to slide back along the sliding groove 36. The fastening sleeve 8 will drive the vertical plate 17 on one side and the three horizontal plates 18 to gradually slide back. When the linkage spring 31 is completely reset, the other two horizontal plates 18 will move back to their original sides on the operating plate 11. Then, the operating plate 11 is rotated in the opposite direction, so that the operating plate 11 once again drives the operating groove 19 and the thrust bearing 35 on one side to rotate in the opposite direction. The rotation resets the operating plate 11, causing the operating groove 19 to rotate and reset again to a position that does not correspond to the upright plate 17 and the horizontal plate 18. Then, the upright plate 17, in conjunction with the two corresponding horizontal plates 18, supports the fastening sleeve 8 to one side of the operating plate 11. With the sliding block 37 and the sliding groove 36 limiting the fastening sleeve 8, the fastening sleeve 8 cannot slide easily. Then, the inner wall of the fastening sleeve 8 re-limits the outer side of the fastening plate 32, preventing the fastening plate 32 and the fastening rod 10 from sliding outward. Then, the fastening rod 10 and the fastening groove 16 cooperate to limit the fastening frame 9, preventing the fastening frame 9 and the changing sleeve 5 from rotating accidentally. Then, the locking rod 4 and the locking sleeve 3 are engaged, thereby ensuring the installation stability of the sealing sleeve 1.

[0029] In summary, during the use or operation of the overall equipment: when it is necessary to remove the sealing sleeve 1, first rotate the operating plate 11 forward, causing the operating plate 11 to drive the coordinating block 12 on one side to rotate forward. Then, the coordinating block 12 will drive the coordinating rod 33 on one side to rotate forward along the coordinating hole 34. The coordinating block 12 will cooperate with the matching block 13 to compress the coordinating spring 14. At the same time, the operating plate 11 will drive the operating groove 19 and the thrust bearing 35 on one side to rotate forward. When the coordinating spring 14 is compressed to its limit, the operating groove 19 will rotate to the position corresponding to the horizontal plate 18. Then, push the fastening sleeve 8. The fastening sleeve 8 will drive the inner sliding block 37 to slide along the sliding groove 36. The fastening sleeve 8 will also simultaneously drive the vertical plate 17 on one side. As the horizontal plate 18 gradually slides into the operating groove 19, the fastening sleeve 8, in conjunction with the operating plate 11, compresses the linkage spring 31 fitted on the outer side of the upright plate 17. When the linkage spring 31 is compressed to its limit, the horizontal plate 18 closest to the fastening sleeve 8 slides through the operating groove 19 and moves to the other side of the operating plate 11. Then, the operating plate 11 is released, and the coordinating spring 14 resets and pushes the coordinating block 12, causing the coordinating block 12 to drive the coordinating rod 33 on one side to rotate in the opposite direction along the coordinating hole 34. The coordinating block 12, through the operating plate 11, drives the operating groove 19 and the thrust bearing 35 on one side to rotate in the opposite direction, causing the operating groove 19 to rotate and reset to a position not corresponding to the horizontal plate 18. At this time, the upright plate 17 cooperates with this position. The horizontal plate 18 limits the fastening sleeve 8 to one side of the operating plate 11, so that the fastening sleeve 8 no longer limits the outer wall of the fastening plate 32. Then, the changing sleeve 5 is rotated in the forward direction. The changing sleeve 5 will drive the fastening frame 9 on one side to rotate in the forward direction. Then, the fastening frame 9 will drive the fastening rod 10, the fastening plate 32 and the limiting spring 15 to rotate in the forward direction. Then, the inner wall of the fastening groove 16 will press against one end of the fastening rod 10. Due to the rounded corner structure design at the edge of the inner wall of the fastening groove 16, one end of the fastening rod 10 will gradually slide out of the fastening groove 16. At the same time, the fastening rod 10 will drive the fastening plate 32 connected to the other end to slide outward, and the fastening plate 32 will drive the limiting spring 15 to stretch outward. At the same time, the changing sleeve 5 will drive the inner variable diameter opening of the variable... The changing groove 6 rotates forward, so that the wider side of the inner wall of the changing groove 6 corresponds to the position of the changing plate 7. During this rotation, the movable spring 39 set in the receiving groove 38 will gradually return to its original position, so that the movable spring 39 pushes the changing plate 7 outward, thereby keeping the outer wall of the changing plate 7 in contact with the inner wall of the changing groove 6. At the same time, the changing plate 7 will drive one side of the locking block 21 to slide outward, so that the locking block 21 disengages from the locking groove 20. Then the locking sleeve 3 is pulled to one side, so that the locking sleeve 3 is removed from the outside of the locking rod 4. Then the locking rod 4 is pulled to the other side to remove the locking rod 4 and the locking sleeve 3. Then, the other locking sleeve 3 and locking rod 4 are removed by referring to the above process. Then the sealing sleeve 1 can be removed.

[0030] When the sealing sleeve 1 needs to be reinstalled, first install the sealing sleeve 1 onto one side of the moving rod 26, so that the connecting sleeve 2 connected to one side of the sealing sleeve 1 fits onto the outside of the connecting block 27. Then, pass the locking rod 4 through the pre-reserved installation holes of the connecting block 27 and the connecting sleeve 2 from one side. Then, fit the locking sleeve 3 onto the outside of the locking rod 4 from the other side. Then, rotate the changing sleeve 5 in the reverse direction. The changing sleeve 5 will drive the fastening bracket 9 on one side to rotate in the reverse direction. Then, the fastening bracket 9 will drive the fastening rod 10, the fastening plate 32, and the limiting spring 15 to rotate in the reverse direction. At the same time, the changing sleeve 5 will drive the inner diameter-type changing groove 6 to rotate in the reverse direction, so that the inner wall of the changing groove 6 gradually applies pressure to the outer wall of the changing plate 7. Then, the changing plate 7 will be in the changing groove 6. Reverse movement resets the locking block 21, causing the change plate 7 to slide inwards. The change plate 7 gradually presses the movable spring 39 into the receiving groove 38. Simultaneously, the change plate 7 causes one side of the locking block 21 to re-engage in the locking groove 20. At this point, the fastening bracket 9 rotates and resets the fastening rod 10 and other components to their original positions corresponding to the fastening groove 16. Then, the limiting spring 15 resets and pulls the fastening plate 32, causing it to slide the fastening rod 10 inwards. One end of the fastening rod 10 then re-inserts into the original fastening groove 16. Then, the operating plate 11 is rotated forward again, causing the coordinating block 12 to rotate forward again. The coordinating block 12 then causes the coordinating rod 33 to rotate along... The operating plate 11 rotates forward through the coordinating hole 34, and the coordinating block 12 will again cooperate with the matching block 13 to press the coordinating spring 14. At the same time, the operating plate 11 will again drive the operating groove 19 and the thrust shaft on one side to rotate forward. When the operating groove 19 rotates to the position corresponding to the horizontal plate 18, the linkage spring 31 pushes the fastening sleeve 8 to drive the inner sliding block 37 to slide back along the sliding groove 36. The fastening sleeve 8 will also drive the vertical plate 17 on one side and the three horizontal plates 18 to gradually slide back. When the linkage spring 31 is fully reset, the other two horizontal plates 18 will move back to their original sides on the operating plate 11. Then the operating plate 11 is rotated in the opposite direction, so that the operating plate 11 will again drive the operating groove 19 and the thrust bearing 35 on one side to rotate in the opposite direction. Rotation resets the operating plate 11, causing the operating groove 19 to rotate and reset again to a position that does not correspond to the upright plate 17 and the horizontal plate 18. Then, the upright plate 17, in conjunction with the two corresponding horizontal plates 18, supports the fastening sleeve 8 to one side of the operating plate 11. With the sliding block 37 and the sliding groove 36 limiting the fastening sleeve 8, the fastening sleeve 8 cannot slide easily. Then, the inner wall of the fastening sleeve 8 re-limits the outer side of the fastening plate 32, preventing the fastening plate 32 and the fastening rod 10 from sliding outward. Then, the fastening rod 10 and the fastening groove 16 cooperate to limit the fastening frame 9, preventing the fastening frame 9 and the changing sleeve 5 from rotating accidentally. Then, the locking rod 4 and the locking sleeve 3 are engaged, thereby ensuring the installation stability of the sealing sleeve 1.

[0031] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An internal tear-off paper tube end sealing mechanism, comprising a sealing sleeve (1), characterized in that: The sealing sleeve (1) has a connecting sleeve (2) on one side, and a locking sleeve (3) on one side. The locking sleeve (3) has a locking rod (4) on the inner side, and a changing sleeve (5) is rotatably fitted on the outer side of the locking sleeve (3). The changing sleeve (5) has a changing groove (6) with a changing diameter on the inner side. A changing plate (7) is slidably provided in the changing groove (6). A fastening sleeve (8) is fitted on the outer side of the locking sleeve (3). A fastening frame (9) is provided on one side of the changing sleeve (5). A fastening rod (10) is slidably provided in the fastening frame (9). An operating plate (11) is rotatably installed on the outer side of the locking sleeve (3). A coordinating block (12) is provided on one side of the operating plate (11), a matching block (13) is provided on the outside of the locking sleeve (3), a coordinating spring (14) is provided between the coordinating block (12) and the matching block (13), a limiting spring (15) is movably sleeved on the outside of the fastening rod (10), a plurality of fastening grooves (16) are provided on the outside of the locking sleeve (3), an upright plate (17) is provided on one side of the fastening sleeve (8), a horizontal plate (18) is provided on the upright plate (17), an operating groove (19) is provided on the operating plate (11), a locking groove (20) is provided on the outside of the locking rod (4), and a locking block (21) is provided on one side of the changing plate (7).

2. The internal tear-type paper tube end sealing mechanism according to claim 1, characterized in that: The sealing sleeve (1) is provided with a bracket (22) below it. The bracket (22) is detachably provided with a slide rail (23). The slide rail (23) is slidably provided with a slider (24). The slider (24) is detachably provided with a moving frame (25). The moving frame (25) is detachably provided with a moving rod (26). One end of the moving rod (26) is fixedly connected to a connecting block (27). The connecting block (27) is detachably inserted into the connecting sleeve (2). The bracket (22) is detachably provided with a rack (28) on one side. The moving frame (25) is detachably provided with a motor (29). The output end of the motor (29) is connected to a gear (30). The gear (30) meshes with the rack (28).

3. A tear-off paper tube end sealing mechanism according to any one of claims 1 or 2, characterized in that: A linkage spring (31) is movably sleeved on the outside of the upright plate (17), and one end of the linkage spring (31) is connected to the fastening sleeve (8).

4. The internal tear-type paper tube end sealing mechanism according to claim 3, characterized in that: One end of the fastening rod (10) is fixedly connected to a fastening plate (32), and the two ends of the limiting spring (15) are respectively connected to the fastening plate (32) and the fastening frame (9).

5. The internal tear-type paper tube end sealing mechanism according to claim 4, characterized in that: The coordinating block (12) is connected to a coordinating rod (33) on one side, and a coordinating hole (34) is opened in the matching block (13). The coordinating spring (14) is movably sleeved on the outside of the coordinating rod (33), and one end of the coordinating rod (33) slides into the coordinating hole (34).

6. The internal tear-off paper tube end sealing mechanism according to claim 5, characterized in that: The operation panel (11) is detachably provided with a thrust bearing (35) on one side, and the other end of the linkage spring (31) is connected to the thrust bearing (35).

7. The internal tear-off paper tube end sealing mechanism according to claim 6, characterized in that: The locking sleeve (3) has a sliding groove (36) on its outer side, and a sliding block (37) is slidably provided in the sliding groove (36). The sliding block (37) is fixedly provided inside the fastening sleeve (8).

8. The internal tear-off paper tube end sealing mechanism according to claim 1, characterized in that: The locking sleeve (3) has a receiving groove (38) on its outer side, and a movable spring (39) is movably provided in the receiving groove (38). The two ends of the movable spring (39) are respectively connected to the inner wall of the receiving groove (38) and one side of the transformation plate (7).

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