Adjustable speed sealing edge driving device for filter can sealing machine

Abstract

The utility model relates to adjustable speed edge sealing drive arrangement for filter sealing tank machine, including frame, main shaft, disc, edge sealing mechanism, clutch and moving assembly etc. The coaxial disc is linked to the upper end of main shaft, and the edge sealing mechanism is arranged on the disc, and the clutch is sleeved on the outer periphery of main shaft, and the axial movement of clutch is controlled by moving assembly to link or separate first transmission wheel. First transmission wheel is driven by first servo motor through first synchronous belt, and second transmission wheel rotates synchronously with main shaft, and is driven by second servo motor through second synchronous belt. The transmission wheel speed difference can be changed in real time by adjusting the speed parameter of two servo motors, and the different edge sealing demand is adapted. The device also limits transmission wheel to move and rub through bearing, stop washer, isolation ring etc. Clutch part and linkage hole cooperate to realize reliable clutch, and moving assembly reduces friction by second bearing.

Description

Technical Field

[0001] This utility model specifically relates to an adjustable speed sealing drive device for a filter can sealing machine. Background Technology

[0002] For example, the prior art with application number "202120399739.X" discloses a sealing drive device for a filter can sealing machine. The sealing drive device includes a frame, a motor, a main shaft, a sealing assembly, a clutch, and a moving assembly that controls the up and down movement of the clutch. The output end of the motor is coaxially linked with a first drive wheel and a second drive wheel. The first drive wheel and the second drive wheel are respectively linked with a first synchronous pulley and a second synchronous pulley via a synchronous belt. The first synchronous pulley and the second synchronous pulley are sleeved on the main shaft, and the number of teeth of the first synchronous pulley is less than the number of teeth of the second synchronous pulley, that is, the rotation speeds of the first synchronous pulley and the second synchronous pulley are different, thus meeting the sealing requirements.

[0003] First, when adjusting the speed of the edge banding drive device, the machine must be stopped, and the first and second synchronous pulleys with different numbers of teeth must be disassembled and installed. It is also necessary to select the first and second synchronous pulleys with matching numbers of teeth (because if the speed difference is too large or too small, it will not be able to meet the actual working requirements of edge banding). The operation is extremely cumbersome.

[0004] Secondly, the first and second drive wheels are directly mounted on the main shaft without any axial limiting or isolation structure. When the equipment is running, the two drive wheels may move axially along the main shaft, causing contact friction between adjacent end faces, resulting in wear, heat generation, or even jamming.

[0005] Furthermore, when the clutch moves downwards to engage with the first synchronous pulley, the clutch needs to rotate synchronously with the first synchronous pulley. However, in the prior art, the moving component adopts a snap-fit ​​form where a fixed block is snapped into a connecting sleeve. The connecting sleeve is fitted around the outer circumference of the clutch, and the connecting sleeve and the clutch must be in a linkage relationship. Otherwise, the clutch will not maintain synchronous lifting and lowering movements with the connecting sleeve. Under this snap-fit ​​connection structure, high-speed friction will occur between the connecting sleeve and the fixed block, which is very easy to generate sparks and noise, and cannot meet the normal operation of the equipment. Utility Model Content

[0006] The technical problem to be solved by this utility model is to address the shortcomings of the prior art by providing an adjustable speed sealing drive device for filter sealing machines. This device does not require disassembling any mechanical parts; it only requires adjusting the speed parameters of the first servo motor and the second servo motor to change the speed difference between the first and second transmission wheels in real time, thus meeting the needs of different sealing scenarios and significantly improving the production efficiency of the equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an adjustable speed sealing drive device for a filter sealing machine, comprising a frame and a main shaft rotatably mounted on the frame. A disc, rotating synchronously with and coaxial with the main shaft, is linked to the upper end of the main shaft. A sealing mechanism for sealing the filter edge is mounted on the disc. The sealing mechanism is linked to a clutch sleeved around the outer periphery of the main shaft. The clutch is linked to a moving component. A first transmission wheel and a second transmission wheel rotating synchronously with the main shaft are also sleeved around the outer periphery of the main shaft. The clutch is distributed between the first transmission wheel and the sealing mechanism. The moving component controls the clutch to reciprocate along the axial direction of the main shaft, thereby enabling the clutch to be linked or disengaged from the first transmission wheel. The device is characterized in that: the first transmission wheel is linked to a first drive wheel via a first synchronous belt, and the first drive wheel is linked to a first servo motor; the second transmission wheel is linked to a second drive wheel via a second synchronous belt, and the second drive wheel is linked to a second servo motor.

[0008] This application can be further configured as follows: a first inner ring groove is provided below the inner ring of the first transmission wheel, and a plurality of first bearings arranged sequentially along the axial direction of the main shaft are installed in the first inner ring groove. The inner ring of the first bearing is linked with the main shaft, and the outer ring is linked with the first transmission wheel. The inner ring of the first transmission wheel is also provided with a second inner ring groove distributed below the first inner ring groove. A first stop washer sleeved on the outer circumference of the main shaft is installed in the second inner ring groove. There is an installation gap between the inner circle edge of the second stop washer and the outer circumference surface of the main shaft. The lower end face of the outer ring of the first bearing presses against the inner circle edge of the first stop washer. A transmission shaft sleeve fixedly sleeved on the outer circumference of the main shaft is provided between the second transmission wheel and the main shaft. An upper support ring inserted into the installation gap is provided above the transmission shaft sleeve. The lower end face of the inner ring of the first bearing presses against the upper end of the upper support ring.

[0009] This application can be further configured such that: the outer periphery of the transmission shaft sleeve is provided with an isolation ring that protrudes outward and is distributed between the first transmission wheel and the second transmission wheel; the inner ring of the second transmission wheel is provided with a third inner ring groove that is adapted to the isolation ring; and there is a separation gap between the upper cross-section of the isolation ring and the lower end face of the first transmission wheel.

[0010] This application can be further configured as follows: the lower end face of the clutch is provided with a plurality of linkage holes surrounding the outer circumference of the main shaft, the plurality of linkage holes are arranged sequentially at intervals along the circumference of the main shaft, the first transmission wheel is equipped with a set of clutch components corresponding to each set of first linkage holes, the clutch components include an upper cylinder and a lower cylinder arranged sequentially along the axial direction of the first transmission wheel, the outer diameter of the lower cylinder is larger than the outer diameter of the upper cylinder, the upper end of the first transmission wheel is provided with a first mounting hole adapted to the upper cylinder, and the lower end is provided with a second mounting hole adapted to the lower cylinder, the moving component is used to control the clutch to reciprocate along the axial direction of the main shaft so as to realize the insertion or disengagement of the upper cylinder into the linkage hole.

[0011] This application can be further configured as follows: the moving component includes a second bearing, two sets of push blocks, and a lifting drive mechanism that simultaneously drives the two sets of push blocks to reciprocate up and down synchronously along the main shaft axis; the outer peripheral surface of the clutch is provided with a limiting ring extending outward, the inner ring of the second bearing is sleeved on the outer peripheral surface of the clutch, and the lower end of the inner ring of the second bearing presses against the limiting ring, a second stop washer is provided above the inner ring of the second bearing, and the outer peripheral surface of the clutch is provided with a fourth inner ring groove that fits into the second stop washer; the two sets of push blocks are symmetrically distributed on both sides of the second bearing, and each set of push blocks is provided with a U-shaped opening groove on the side facing the second bearing, the opening of the U-shaped opening groove faces the second bearing, and the outer ring of the second bearing is inserted into the U-shaped opening groove.

[0012] This application can be further configured as follows: the lifting drive mechanism includes a lifting cylinder and a rotating shaft that is rotatably mounted on the frame at both ends. Each set of the pushing blocks and the rotating shaft are provided with a set of driven swing arms. One end of the driven swing arm is rotatably connected to the pushing block, and the other end of the driven swing arm is linked to the rotating shaft. The rotating shaft is also linked to an active swing arm. The active swing arm is rotatably connected to the output end of the lifting cylinder. The body of the lifting cylinder is hinged to the frame.

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

[0014] (i) By independently controlling the speed parameters of the first servo motor and the second servo motor, the speed difference between the first transmission wheel and the second transmission wheel can be adjusted in real time without disassembling mechanical parts, which can flexibly meet the needs of different edge sealing scenarios and greatly improve the production efficiency of the equipment. At the same time, it avoids the limitation of traditional synchronous wheels or drive wheels that need to be designed with a specific number of teeth ratio, and enhances the adjustability and adaptability of the transmission system.

[0015] (ii) The first inner ring groove provides installation space for the first bearing to ensure coaxiality. The two sets of first bearings arranged along the main shaft axis reduce the radial runout of the first transmission wheel when it rotates through radial support, and limit its axial movement range through the rigid contact between the inner and outer rings of the bearing. The first stop washer in the second inner ring groove cooperates with the upper support ring above the transmission shaft sleeve, which not only restricts the downward movement of the first transmission wheel, but also forms a physical isolation layer through the installation gap, avoiding direct friction between the first transmission wheel and the second transmission wheel when they experience slight movement due to vibration, thus improving the running stability of the transmission wheel.

[0016] (iii) The inner ring of the second bearing in the moving assembly is axially fixed to the clutch and rotates synchronously through the limiting ring and the second stop washer, and the outer ring is engaged with the push block through the U-shaped opening groove. When the push block is driven to move axially by the lifting drive mechanism, the inner and outer rings of the second bearing rotate relative to each other through the rolling elements, which avoids the sparks and noise generated by the high-speed sliding friction between the traditional connecting sleeve and the fixed block, and meets the normal operation requirements of the equipment.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the cam, clutch, and moving assembly according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic cross-sectional view of an embodiment of the present utility model;

[0021] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0022] Figure 5 for Figure 3 Enlarged view of a portion of point B in the middle;

[0023] Main shaft c1, disc c2, cam c4, clutch c5, first transmission wheel c6, second transmission wheel c7, first synchronous belt c10, first drive wheel c11, second synchronous belt c12, second drive wheel c13, second servo motor c14, first servo motor c15, first inner ring groove c16, first bearing c17, second inner ring groove c18, first stop washer c19, transmission shaft sleeve c20, isolation ring c21, third inner ring groove c22, linkage hole c23, clutch component c24, upper support ring c25, upper cylinder c26, lower cylinder c27, first mounting hole c28, second mounting hole c29, second bearing c30, push block c31, limit ring c32, second stop washer c33, fourth inner ring groove c34, lifting cylinder c35, rotating shaft c36, driven swing arm c37, active swing arm c38, sealing wheel c41. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 5 The adjustable speed sealing drive device for the filter sealing machine shown includes a frame and a main shaft c1 rotatably mounted on the frame. A disc c2, which rotates synchronously with the main shaft c1 and is coaxial with the main shaft c1, is linked to the upper end of the main shaft c1. A sealing mechanism for sealing the filter edge is mounted on the disc c2. The sealing mechanism is linked to a clutch c5 sleeved on the outer periphery of the main shaft c1. The clutch c5 is linked to a moving component. A first transmission wheel c6 and a second transmission wheel c7, which rotate synchronously with the main shaft c1, are also sleeved on the outer periphery of the main shaft c1. The clutch c5 is distributed between the first transmission wheel c6 and the sealing mechanism. The moving component is used to control the reciprocating movement of the clutch c5 along the axial direction of the main shaft c1, thereby realizing the linkage or disengagement of the clutch c5 with the first transmission wheel c6. The first transmission wheel c6 is linked to the first drive wheel c11 via a first synchronous belt c10. The first drive wheel c11 is linked to the first servo motor c15. The first servo motor c15 drives the first synchronous belt c10 to rotate via the first drive wheel c11, which in turn drives the first drive wheel c11 to rotate relative to the main shaft c1. The second transmission wheel c7 is linked to the second drive wheel c13 via a second synchronous belt c12. The second drive wheel c13 is linked to the second servo motor c14. The second servo motor c14 drives the second synchronous belt c12 to rotate via the second drive wheel c13, which in turn drives the second drive wheel c13 to rotate. The main shaft c1 rotates synchronously with the second drive wheel c13.

[0026] Without disassembling any mechanical parts, simply adjusting the speed parameters of the first servo motor c15 and the second servo motor c14 allows for real-time adjustment of the speed difference between the first transmission wheel c6 and the second transmission wheel c7, meeting the needs of different edge-sealing scenarios and significantly improving the equipment's production efficiency. Furthermore, regardless of whether there are two sets of transmission wheels or two sets of drive wheels, there is no need to design a specific tooth ratio; the speed difference between the first transmission wheel c6 and the second transmission wheel c7 can be flexibly adjusted using only two servo motors.

[0027] This embodiment can be further configured as follows: a first inner ring groove c16 is provided below the inner ring of the first transmission wheel c6, and two sets of first bearings c17 arranged sequentially along the axial direction of the main shaft c1 are installed in the first inner ring groove c16. The inner ring of the first bearing c17 is linked with the main shaft c1, and the outer ring is linked with the first transmission wheel c6. The inner ring of the first transmission wheel c6 is also provided with a second inner ring groove c18 distributed below the first inner ring groove c16. A first bearing c17 sleeved on the outer circumference of the main shaft c1 is installed in the second inner ring groove c18. There is an installation gap between the inner edge of the retaining washer c19 and the inner edge of the second retaining washer c33 and the outer circumference of the main shaft c1. The lower end face of the outer ring of the first bearing c17 presses against the inner edge of the first retaining washer c19. A transmission shaft sleeve c20 is fixedly sleeved on the outer circumference of the main shaft c1 between the second transmission wheel c7 and the main shaft c1. An upper support ring c25 is inserted into the installation gap above the transmission shaft sleeve c20. The lower end face of the inner ring of the first bearing c17 presses against the upper end of the upper support ring c25.

[0028] The first inner ring groove c16 provides installation space for the first bearing c17 to ensure coaxiality. Two sets of first bearings c17 are arranged axially along the main shaft c1. Their inner rings are linked to the main shaft c1 (rotating with the main shaft c1), and their outer rings are linked to the first transmission wheel c6 (supporting the rotation of the first transmission wheel c6). This reduces radial runout of the first transmission wheel c6 during rotation through radial support, and limits its axial movement range through rigid contact between the inner and outer rings of the bearings. The second inner ring groove c18 is used to install the first stop washer c19. There is an installation gap between the inner edge of the first stop washer c19 and the outer circumference of the main shaft c1 (not only to avoid direct friction with the main shaft c1, but also to facilitate the passage of the upper support ring c25 and its contact with the lower end face of the inner ring of the first bearing c17). The lower end face of the outer ring of the first bearing c17 presses against the inner edge of the washer, restricting the downward movement of the outer ring of the first transmission wheel c6. The transmission shaft sleeve c20 is fixedly sleeved on the outer circumference of the main shaft c1 (rotating synchronously with the main shaft c1), serving as the connecting carrier between the second transmission wheel c7 and the main shaft c1. The upper support ring c25 above it is inserted into the installation gap between the first stop washer c19 and the main shaft c1, pressing against the lower end face of the inner ring of the first bearing c17 (the inner ring of the bearing rotates with the main shaft c1). By restricting the lower end of the first bearing c17, the downward movement of the first transmission wheel c6 is restricted. At the same time, with the clearance fit between the upper support ring c25 and the first stop washer c19, a physical isolation layer is formed between the first transmission wheel c6 and the second transmission wheel c7. Even if the two undergo slight axial movement due to vibration, direct friction between adjacent end faces can be avoided.

[0029] This embodiment can be further configured as follows: the outer periphery of the transmission shaft sleeve c20 is provided with an isolation ring c21 that protrudes outward and is distributed between the first transmission wheel c6 and the second transmission wheel c7; the inner ring of the second transmission wheel c7 is provided with a third inner ring groove c22 that is adapted to the isolation ring c21; and there is a separation gap between the upper section of the isolation ring c21 and the lower end face of the first transmission wheel c6.

[0030] The isolation ring c21 is embedded in the third inner ring groove c22. Through the radial limiting of the groove and the ring, the radial position of the second transmission wheel c7 is constrained, preventing the second transmission wheel c7 from moving upward and thus rubbing against the first transmission wheel c6. The separation gap between the upper section of the isolation ring c21 and the lower end face of the first transmission wheel c6 provides a safe distance when the two transmission wheels are running normally (even if the first transmission wheel c6 moves slightly downward due to vibration or load changes, its lower end face only approaches the upper section of the isolation ring c21 without contacting it). When the second transmission wheel c7 moves upward, the groove wall of the third inner ring groove c22 is blocked by the isolation ring c21 (the isolation ring c21 is fixed to the transmission shaft sleeve c20, and the transmission shaft sleeve c20 rotates synchronously with the main shaft c1 and is in a stable position), limiting its upward movement range. Thus, through the radial positioning of the "isolation ring c21 and the third inner ring groove c22" and the axial buffering of the "separation gap", direct friction between the adjacent end faces of the first transmission wheel c6 and the second transmission wheel c7 is completely avoided, further improving the stability of the transmission wheel operation and the service life of the equipment.

[0031] This embodiment can be further configured as follows: the lower end face of the clutch c5 is provided with a plurality of linkage holes c23 surrounding the outer periphery of the main shaft c1. The plurality of linkage holes c23 are arranged sequentially at intervals along the circumference of the main shaft c1. The first transmission wheel c6 is equipped with a set of clutch components c24 corresponding to each set of first linkage holes c23. The clutch component c24 includes an upper cylinder c26 and a lower cylinder c27 arranged sequentially along the axial direction of the first transmission wheel c6. The outer diameter of the lower cylinder c27 is larger than the outer diameter of the upper cylinder c26. The upper end of the first transmission wheel c6 is provided with a first mounting hole c28 adapted to the upper cylinder c26, and the lower end is provided with a second mounting hole c29 adapted to the lower cylinder c27. The moving component is used to control the clutch c5 to reciprocate along the axial direction of the main shaft c1, thereby realizing the insertion or disengagement of the upper cylinder c26 into the linkage hole c23.

[0032] The lower cylinder c27 is prevented from disengaging the clutch component c24 by the second mounting hole c29, ensuring the axial fixation of the clutch component c24 and the first transmission wheel c6 and preventing the clutch component c24 from moving up and down. When the moving component controls the clutch c5 to move axially along the main shaft c1, the clutch c5 and the first transmission wheel c6 are linked when the upper cylinder can be precisely inserted, and the linkage is disengaged when disengaged, realizing rapid switching of clutch state, while avoiding linkage failure caused by uneven force or structural loosening.

[0033] This embodiment can be further configured as follows: the moving component includes a second bearing c30, two sets of push blocks c31, and a lifting drive mechanism that simultaneously drives the two sets of push blocks c31 to reciprocate up and down synchronously along the main shaft c1 axial direction; the outer peripheral surface of the clutch c5 is provided with a limiting ring c32 extending outward, the inner ring of the second bearing c30 is sleeved on the outer peripheral surface of the clutch c5, and the lower end of the inner ring of the second bearing c30 presses against the limiting ring c32, a second stop washer c33 is provided above the inner ring of the second bearing c30, and the outer peripheral surface of the clutch c5 is provided with a fourth inner ring groove c34 that fits into the second stop washer c33; the two sets of push blocks c31 are symmetrically distributed on both sides of the second bearing c30, and each set of push blocks c31 is provided with a U-shaped opening groove on the side facing the second bearing c30, the opening of the U-shaped opening groove faces the second bearing c30, and the outer ring of the second bearing c30 is inserted into the U-shaped opening groove.

[0034] The lower end of the inner ring of the second bearing c30 presses against the limiting ring c32 extending from the outer periphery of the clutch c5, restricting the downward axial movement of the inner ring of the second bearing c30. The second stop washer c33 is fitted into the fourth inner ring groove c34, restricting the upward axial movement of the inner ring of the second bearing c30. This achieves axial fixation between the inner ring of the second bearing c30 and the clutch c5, while the inner ring of the second bearing c30 can maintain synchronous rotation with the clutch c5. Two sets of push blocks c31 are symmetrically distributed on both sides of the second bearing c30. The side facing the bearing has a U-shaped opening groove (the opening faces the bearing). The outer ring of the second bearing c30 is inserted into the U-shaped groove. When the lifting drive mechanism drives the push blocks c31 to move axially along the main shaft c1, the push blocks c31 push the outer ring of the second bearing c30 to move axially through the U-shaped groove (the outer ring does not rotate with the clutch c5). The inner ring of the second bearing c30 rotates synchronously with the clutch c5. The inner and outer rings of the second bearing c30 achieve relative rotation through rolling elements (rolling friction replaces sliding friction), avoiding the high-speed sliding friction caused by direct contact between the connecting sleeve (linked with the clutch c5) and the fixed block (stationary) in the prior art.

[0035] This embodiment can be further configured as follows: the lifting drive mechanism includes a lifting cylinder c35 and a rotating shaft c36 that is rotatably mounted on the frame at both ends. Each set of push blocks c31 and rotating shaft c36 is provided with a set of driven swing arms c37. One end of the driven swing arm c37 is rotatably connected to the push block c31, and the other end of the driven swing arm c37 is linked to the rotating shaft c36. The rotating shaft c36 is also linked to an active swing arm c38. The active swing arm c38 is rotatably connected to the output end of the lifting cylinder c35. The body of the lifting cylinder c35 is hinged to the frame.

[0036] The lifting cylinder C35 is hinged to the frame, allowing it to adaptively adjust its position according to changes in the swing arm angle during operation, preventing rigid jamming. When the output end of the lifting cylinder C35 extends or retracts, it pushes the active swing arm C38 to swing around the center line of the rotating shaft C36, simultaneously driving the rotating shaft C36 to rotate around its own center line. The rotating shaft C36, in turn, drives the driven swing arm C37 to rotate around the center line of the rotating shaft C36. The end of the driven swing arm C37 connected to the push block C31 decomposes the circular motion into linear motion along the axis of the main shaft C1, thereby driving the push block C31 to reciprocate up and down along the axis of the main shaft C1. During this process, due to the "U-shaped slot" structure, the push block C31 slides relative to the outer ring of the second bearing C30 along the circumference of the main shaft C1, avoiding interference. However, this sliding distance is minimal and will not generate significant wear or noise.

[0037] The working principle of this embodiment is as follows: The second servo motor c14 drives the main shaft c1 to rotate, and the main shaft c1 drives the disc c2 to rotate synchronously. The sealing wheel c41 (this is prior art) in the sealing mechanism rotates synchronously with the disc c2. During this process, the clutch c5 does not rotate with the main shaft c1. At the same time, the first servo motor c15 drives the first transmission wheel c6 to rotate, and there is a speed difference between the first transmission wheel c6 and the second transmission wheel c7. When the moving component drives the clutch c5 to move down until the clutch c5 and the first transmission wheel c6 are linked, that is, the clutch c5 rotates synchronously with the first transmission wheel c6, the clutch c5 drives the cam c4 (this is prior art) in the sealing mechanism to rotate. Then the sealing wheel c41 (this is prior art) in the sealing mechanism will reciprocate towards the outer periphery of the filter to perform the sealing action.

Claims

1. An adjustable speed sealing drive device for a filter sealing machine, comprising a frame and a main shaft rotatably mounted on the frame. A disc, rotating synchronously with and coaxial with the main shaft, is linked to the upper end of the main shaft. A sealing mechanism for sealing the filter edge is mounted on the disc. The sealing mechanism is linked to a clutch sleeved around the outer circumference of the main shaft. The clutch is linked to a moving component. A first transmission wheel and a second transmission wheel, rotating synchronously with the main shaft, are also sleeved around the outer circumference of the main shaft. The clutch is distributed between the first transmission wheel and the sealing mechanism. The moving component controls the reciprocating movement of the clutch along the axial direction of the main shaft, thereby achieving linkage or disengagement between the clutch and the first transmission wheel. The device is characterized in that: The first transmission wheel is linked to a first drive wheel via a first synchronous belt, and the first drive wheel is linked to a first servo motor; the second transmission wheel is linked to a second drive wheel via a second synchronous belt, and the second drive wheel is linked to a second servo motor.

2. The adjustable speed sealing drive device for a filter can sealing machine according to claim 1, characterized in that: The first transmission wheel has a first inner ring groove below its inner ring. Several sets of first bearings are installed in the first inner ring groove, arranged sequentially along the axial direction of the main shaft. The inner ring of the first bearing is linked to the main shaft, and the outer ring is linked to the first transmission wheel. The inner ring of the first transmission wheel also has a second inner ring groove distributed below the first inner ring groove. A first stop washer is installed in the second inner ring groove and sleeved on the outer circumference of the main shaft. There is an installation gap between the inner circle of the first stop washer and the outer circumference of the main shaft. The lower end face of the outer ring of the first bearing presses against the inner circle of the first stop washer. A transmission shaft sleeve is fixedly sleeved on the outer circumference of the main shaft between the second transmission wheel and the main shaft. An upper support ring is provided above the transmission shaft sleeve and inserted into the installation gap. The lower end face of the inner ring of the first bearing presses against the upper end of the upper support ring.

3. The adjustable speed sealing drive device for a filter can sealing machine according to claim 2, characterized in that: The outer periphery of the transmission shaft sleeve is provided with an isolation ring that protrudes outward and is distributed between the first transmission wheel and the second transmission wheel. The inner ring of the second transmission wheel is provided with a third inner ring groove that is adapted to the isolation ring. There is a separation gap between the upper cross-section of the isolation ring and the lower end face of the first transmission wheel.

4. The adjustable speed sealing drive device for a filter can sealing machine according to claim 1, characterized in that: The lower end face of the clutch is provided with several sets of linkage holes surrounding the outer circumference of the main shaft. The several sets of linkage holes are arranged sequentially at intervals along the circumference of the main shaft. The first transmission wheel is equipped with a clutch component corresponding to each set of first linkage holes. The clutch component includes an upper cylinder and a lower cylinder arranged sequentially along the axial direction of the first transmission wheel. The outer diameter of the lower cylinder is larger than the outer diameter of the upper cylinder. The upper end of the first transmission wheel is provided with a first mounting hole adapted to the upper cylinder, and the lower end is provided with a second mounting hole adapted to the lower cylinder. The moving component is used to control the clutch to reciprocate along the axial direction of the main shaft, thereby realizing the insertion or disengagement of the upper cylinder into the linkage hole.

5. The adjustable speed sealing drive device for a filter can sealing machine according to claim 1 or 4, characterized in that: The moving component includes a second bearing, two sets of push blocks, and a lifting drive mechanism that simultaneously drives the two sets of push blocks to reciprocate and move up and down synchronously along the main shaft axis. The outer circumferential surface of the clutch is provided with a limiting ring extending outward. The inner ring of the second bearing is sleeved on the outer circumference of the clutch, and the lower end of the inner ring of the second bearing presses against the limiting ring. A second stop washer is provided above the inner ring of the second bearing. The outer circumferential surface of the clutch is provided with a fourth inner ring groove that fits into the second stop washer. The two sets of push blocks are symmetrically distributed on both sides of the second bearing. Each set of push blocks has a U-shaped opening groove on the side facing the second bearing. The opening of the U-shaped opening groove faces the second bearing, and the outer ring of the second bearing is inserted into the U-shaped opening groove.

6. The adjustable speed sealing drive device for a filter can sealing machine according to claim 5, characterized in that: The lifting drive mechanism includes a lifting cylinder and a rotating shaft that is rotatably mounted on the frame at both ends. Each set of push blocks and rotating shafts is provided with a set of driven swing arms. One end of the driven swing arm is rotatably connected to the push block, and the other end of the driven swing arm is linked to the rotating shaft. The rotating shaft is also linked to an active swing arm. The active swing arm is rotatably connected to the output end of the lifting cylinder. The body of the lifting cylinder is hinged to the frame.

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