Speed-adjustable filter automatic can seamer

Abstract

The utility model relates to adjustable speed filter automatic can sealing machine, including frame, the carousel of strip -shaped mouth of taking material of arc and the feed guide mechanism of arranging along carousel circumference, pre -press mechanism, edge sealing device (include press jar mechanism and sealing mechanism), discharge device etc. Sealing mechanism passes through double servo motor independent drive first / second transmission, and the speed difference of adjusting adapts different edge sealing demand, feed guide mechanism passes through adjustable connection mounting seat and integration detection element of strip -shaped hole, and pre -press / press jar mechanism fixes filter respectively through pre -press disc, press jar disc, and edge sealing subassembly is driven by cam (tension spring keeps contact), and discharge device takes the protection piece and prevents injury, and the material component (jacks, top material disc) auxiliary ejection. The equipment realizes efficient, stable, automatic can sealing operation, and promotes adaptability and product yield.

Description

Technical Field

[0001] This utility model specifically relates to an automatic sealing machine for adjustable speed filters. Background Technology

[0002] The filter housing is made of metal, and the inner filter element is a pre-assembled filtration unit that needs to be sealed inside the filter housing. To achieve high-speed, automated filter sealing, filter sealing machines have emerged on the market.

[0003] For example, prior art with application number "202022573783.6" discloses a rotary filter sealing machine, including a frame, with a working chamber at the top and a drive chamber at the bottom. The working chamber contains a rotary table and a material feeding mechanism. The rotary table has several arc-shaped notches, and the material feeding mechanism is located on one side of the rotary table. The drive chamber contains a sealing mechanism, which includes a sealing wheel, an actuator arm, a cam, a clutch, a product fixing seat, and a drive wheel assembly. The drive wheel assembly drives the clutch to rotate, and the clutch is linked to the cam. Under the action of the cam, the drive wheel drives the actuator arm to move, causing the sealing wheel to press against the product fixing seat to seal the filter, thus automating the filter sealing process and improving production efficiency. Correspondingly, 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.

[0004] Based on the two existing technologies mentioned above, it can be seen that the existing filter sealing machine has the following defects: First, when adjusting the speed of the existing edge sealing drive device, it is necessary to stop the machine, disassemble and install the first synchronous pulley and the second synchronous pulley with different numbers of teeth, and it is necessary to select the first synchronous pulley and the second synchronous pulley 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 sealing well), making the operation extremely cumbersome.

[0005] 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.

[0006] 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

[0007] The technical problem to be solved by this utility model is to provide an adjustable speed filter automatic sealing machine that addresses the shortcomings of the prior art. It does not require disassembling any mechanical parts; by simply adjusting the speed parameters of the first servo motor and the second servo motor, the speed difference between the first and second transmission wheels can be changed in real time to meet the needs of different sealing scenarios and greatly improve the production efficiency of the equipment.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an adjustable speed filter automatic can sealing machine, comprising a frame and a turntable rotatably mounted on the frame. The turntable has several sets of arc-shaped material inlets evenly spaced along its circumference. The frame also has a feeding guide mechanism, a sealing device, and a discharge device arranged sequentially along the circumference of the turntable. The sealing device includes a can-pressing mechanism located above the turntable and a can-sealing mechanism located below the turntable and opposite to the can-pressing mechanism. The can-sealing mechanism includes a main shaft and a disc that rotates synchronously with and is coaxial with the main shaft. Several sets of sealing components are mounted on the disc, arranged sequentially along its circumference. The outer circumference of the main shaft is also fitted with a cam, a clutch, a first transmission wheel, and a second transmission wheel that rotates synchronously with the main shaft. The cam rotates synchronously with the clutch, the clutch is linked to a moving component, and the moving component is used to control the clutch to reciprocate along the axial direction of the main shaft, thereby realizing the clutch's linkage or disengagement with the first transmission wheel. The first transmission wheel is linked to a first drive wheel via a first synchronous belt, the first drive wheel is linked to a first servo motor, the first servo motor drives the first synchronous belt to rotate via the first drive wheel, and the first synchronous belt then drives the first drive wheel to rotate relative to the main shaft; the second transmission wheel is linked to a second drive wheel via a second synchronous belt, the second drive wheel is linked to a second servo motor, the second servo motor drives the second synchronous belt to rotate via the second drive wheel, and the second synchronous belt then drives the second drive wheel to rotate, and the main shaft rotates synchronously with the second drive wheel.

[0009] 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 locking washer fitted on the outer circumference of the main shaft is installed in the second inner ring groove. There is an installation gap between the inner edge of the second locking washer and the outer circumferential surface of the main shaft. The lower end face of the outer ring of the first bearing... The first bearing is pressed against the inner edge 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, and 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 is pressed against the upper end of the upper support ring. An isolation ring protruding outward and distributed between the first transmission wheel and the second transmission wheel is provided on the outer circumference of the transmission shaft sleeve. A third inner ring groove adapted to the isolation ring is provided above the inner ring of the second transmission wheel. There is a separation gap between the upper 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 periphery 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... A U-shaped opening groove is provided on the side facing the second bearing, with the opening of the U-shaped opening groove facing the second bearing, and the outer ring of the second bearing inserted into the U-shaped opening groove; 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, which is rotatably connected to the output end of the lifting cylinder. The body of the lifting cylinder is hinged to the frame.

[0012] This application can be further configured as follows: the disk is provided with a plurality of sets of mounting holes arranged sequentially at intervals along the circumference of the disk; the edge sealing assembly includes an actuator arm rotatably disposed at the mounting hole, and the two ends of the actuator arm extend out of the mounting hole respectively; the upper end of the actuator arm is linked to an upper connecting plate; the end of the upper connecting plate away from the actuator arm is rotatably connected to an edge sealing wheel; the lower end of the actuator arm is linked to a lower connecting plate; the end of the lower connecting plate away from the actuator arm is linked to an edge sealing drive wheel; the end of the lower connecting plate near the actuator arm is linked to a tension spring; the end of the tension spring away from the lower connecting plate is linked to a positioning post; the positioning post is distributed on the side near the edge sealing drive wheel; the tension spring pulls the lower connecting plate to cause the edge sealing drive wheel to always press against the outer peripheral surface of the cam.

[0013] This application can be further configured such that: the sealing mechanism further includes an inner shaft fixed on the frame, the main shaft is sleeved on the outer periphery of the inner shaft, the upper end of the inner shaft is provided with a positioning seat integrally formed with the inner shaft, and the inner shaft is linked to a material lifting assembly for lifting the filter that has completed sealing on the positioning seat.

[0014] This application can be further configured as follows: the ejector assembly includes an ejector rod and a pusher plate; the inner shaft has an ejection channel extending through the inner shaft along its axial direction in the middle; the ejector rod is slidably disposed in the ejection channel; the upper end of the ejector rod is linked to an ejector plate; the lower end of the ejector rod is linked to the middle of the pusher plate; ejection cylinders are symmetrically linked at both ends of the pusher plate; and the body of the ejection cylinder is fixed on the frame.

[0015] This application can be further configured such that: the pressure vessel mechanism includes a pressure vessel plate distributed above the turntable and a pressure vessel cylinder linked with the pressure vessel plate, the body of the pressure vessel cylinder being fixed on the frame.

[0016] This application can be further configured such that: the frame is also provided with a pre-compression mechanism distributed between the feeding guide mechanism and the sealing device, the pre-compression mechanism includes a pre-compression plate distributed above the turntable and a pre-compression cylinder linked with the pre-compression plate, the body of the pre-compression cylinder being fixed on the frame.

[0017] This application can be further configured such that: the discharge device includes a discharge push plate and a discharge cylinder linked to the discharge push plate, the body of the discharge cylinder is fixed on the frame, and a protective plate is connected to the end of the discharge push plate.

[0018] The beneficial effects of this utility model are:

[0019] (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.

[0020] (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.

[0021] (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.

[0022] (iv) The guide plate is detachably connected to the mounting base through the strip hole, and its position can be adjusted by sliding along the length of the strip hole to adapt to filters of different diameters or widths. At the same time, it integrates detection elements (such as photoelectric sensors, proximity switches, etc.) to monitor the position status of the filter in real time. When there is an abnormality, it triggers an alarm or suspends subsequent actions. When it is normal, it sends a signal to allow the turntable to rotate, realizing precise control and automated connection of the feeding process, reducing the changeover and debugging time and the defect rate caused by feeding deviation.

[0023] (v) The lower connecting plate of the sealing assembly is connected to the positioning column by a tension spring. The continuous elastic tension of the tension spring makes the sealing drive wheel press tightly against the outer circumference of the cam. Even if the cam and the main shaft move relative to each other due to the speed difference, the contact state between the sealing drive wheel and the cam can still be ensured, and the contour change of the cam can be accurately transmitted to the sealing wheel, thus realizing stable can sealing action execution.

[0024] (vi) The moving component rotates relative to the inner and outer rings of the second bearing (rolling friction replaces sliding friction), avoiding the high-speed sliding friction caused by direct contact between the fixed block and the clutch in the prior art; the U-shaped slot structure of the push block allows it to slide slightly along the main shaft circumferentially, avoiding interference, reducing wear and noise, and improving the durability of the moving component.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the entire machine according to an embodiment of the present invention;

[0027] Figure 2 This is a partial schematic diagram of the edge-sealing device according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the cam, clutch, and moving assembly according to an embodiment of the present invention;

[0029] Figure 4 This is a partial cross-sectional schematic diagram of the edge-sealing device according to an embodiment of the present invention;

[0030] Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle;

[0031] Figure 6 for Figure 4 Enlarged view of a portion of point B in the middle;

[0032] Figure 7 for Figure 4 Enlarged view of a portion of point C in the middle;

[0033] Figure 8 This is a schematic diagram of the feeding guide mechanism according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the discharge device according to an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the edge sealing component according to an embodiment of the present invention.

[0036] Turntable a, arc-shaped material receiving port a1;

[0037] Feeding guide mechanism b, guide plate b1, mounting base b2, strip hole b3, detection element b4;

[0038] Edge sealing device c, main shaft c1, disc c2, inner shaft c3, cam c4, clutch c5, first transmission wheel c6, second transmission wheel c7, third bearing c8, fourth bearing c9, 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 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, actuator arm c39, upper connecting plate c40, edge sealing wheel c41, lower connecting plate c42, edge sealing drive wheel c43, tension spring c44, push rod c45, push plate c46, ejection cylinder c47;

[0039] Discharge device d, discharge push plate d1, discharge cylinder d2, protective plate d3;

[0040] Pressure tank mechanism e, pressure tank plate e1, pressure tank cylinder e2;

[0041] Pre-compression mechanism f, pre-compression plate f1, pre-compression cylinder f2. Detailed Implementation

[0042] 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.

[0043] like Figures 1 to 10The adjustable speed filter automatic can sealing machine shown includes a frame and a turntable a rotatably mounted on the frame. The turntable a has several sets of arc-shaped material inlets a1 arranged evenly and sequentially along its circumference. The frame also includes a feeding guide mechanism b, a sealing device c, and a discharging device d arranged sequentially along the circumference of the turntable a. The sealing device c includes a can-pressing mechanism e located above the turntable a and a can-sealing mechanism located below the turntable a and opposite to the can-pressing mechanism e. The can-sealing mechanism includes a main shaft c1. A disk c2 rotates synchronously with and is coaxially arranged with the main shaft c1. Several sets of edge-sealing assemblies are installed on the disk c2, arranged at intervals along its circumference. A cam c4, a clutch c5, a first transmission wheel c6, and a second transmission wheel c7, all arranged axially along the main shaft c1, are also fitted around the outer circumference of the main shaft c1. The cam c4 rotates synchronously with the clutch c5. A third bearing c8 is installed between the clutch c5 and the main shaft c1. A fourth bearing c9 is provided between the main shafts c1. The clutch c5 is linked to a moving component, which controls the reciprocating movement of the clutch c5 along the axial direction of the main shaft c1, thereby enabling the clutch c5 to be linked or disengaged from the first transmission wheel c6. The first transmission wheel c6 is linked to a first drive wheel c11 via a first synchronous belt c10. The first drive wheel c11 is linked to a first servo motor c15. The first servo motor c15 drives the first synchronous belt c10 to rotate via the first drive wheel c11, and then the first synchronous belt c10 drives the first drive wheel c11 to rotate relative to the main shaft c1. The second transmission wheel c7 is linked to a second drive wheel c13 via a second synchronous belt c12. The second drive wheel c13 is linked to a second servo motor c14. The second servo motor c14 drives the second synchronous belt c12 to rotate via the second drive wheel c13, and then the second synchronous belt c12 drives the second drive wheel c13 to rotate. The main shaft c1 rotates synchronously with the second drive wheel c13.

[0044] The first transmission wheel c6 is linked to the first drive wheel c11, driven by the first servo motor c15 via the first synchronous belt c10, and can rotate relative to the main shaft c1. The second transmission wheel c7 is linked to the second drive wheel c13, driven by the second servo motor c14 via the second synchronous belt c12, and rotates synchronously with the main shaft c1. When it is necessary to adjust the speed difference, the speed difference between the first transmission wheel c6 and the second transmission wheel c7 can be changed by adjusting the speed parameters of the two servo motors. The moving component controls the clutch c5 to move axially along the main shaft c1. When the clutch c5 is linked with the first transmission wheel c6, the rotation of the first transmission wheel c6 is transmitted through the clutch c5 to the cam c4, which rotates synchronously with it, thereby driving the sealing assembly to move. Through this structure of "independent dual-motor drive - speed parameter adjustment - clutch c5 linkage / disengagement control", the equipment can flexibly adapt to different sealing requirements and achieve efficient and stable can sealing operations. This solution introduces a first servo motor c15 and a second servo motor c14 to independently drive the first transmission wheel c6 and the second transmission wheel c7, respectively. The speed difference between the two servo motors can be changed in real time simply by adjusting the speed parameters of the two servo motors, without disassembling any mechanical parts. This completely solves the limitations of traditional mechanical adjustment, significantly improves the equipment's ability to quickly adapt to different edge banding scenarios, and avoids the limitation of the synchronous wheel tooth ratio, greatly improving production efficiency and equipment versatility.

[0045] 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.

[0046] 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.

[0047] Furthermore, 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. 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.

[0048] 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, so as to prevent 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] Furthermore, 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.

[0054] 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.

[0055] This embodiment can be further configured as follows: the disc c2 is provided with a plurality of sets of mounting holes arranged sequentially and at intervals along the circumference of the disc c2; the edge sealing assembly includes an actuator arm c39 rotatably disposed at the mounting hole, and the two ends of the actuator arm c39 extend out of the mounting hole respectively; the upper end of the actuator arm c39 is linked to an upper connecting plate c40; the end of the upper connecting plate c40 away from the actuator arm c39 is rotatably connected to an edge sealing wheel c41; the lower end of the actuator arm c39 is linked to a lower connecting plate c42; the end of the lower connecting plate c42 away from the actuator arm c39 is linked to an edge sealing drive wheel c43; the end of the lower connecting plate c42 near the actuator arm c39 is linked to a tension spring c44; the end of the tension spring c44 away from the lower connecting plate c42 is linked to a positioning post; the positioning post is distributed on the side near the edge sealing drive wheel c43; the tension spring c44 pulls the lower connecting plate c42 to cause the edge sealing drive wheel c43 to always press against the outer circumferential surface of the cam c4.

[0056] The main shaft c1 drives the sealing assembly to rotate around the center line of the main shaft c1 via the disc c2. When the moving component drives the clutch c5 to move down and is linked with the first transmission wheel c6, the cam c4 rotates synchronously with the first transmission wheel c6 (at this time, there is a speed difference between the cam c4 and the main shaft c1). The contour change of the outer circumference of the cam c4 pushes the sealing drive wheel c43 during the rotation, which drives the lower connecting plate c42 to rotate around the actuator arm c39. The actuator arm c39 is pushed by the lower connecting plate c42 and rotates around the mounting hole, which in turn drives the sealing wheel c41 to move towards the filter housing through the upper connecting plate c40 to complete the sealing action. During this process, one end of the tension spring c44 is fixed to the positioning post and the other end is connected to the lower connecting plate c42. The lower connecting plate c42 is pulled by the continuous elastic tension, so that the sealing drive wheel c43 is pressed tightly against the outer circumference of the cam c4. Even if the cam c4 and the main shaft c1 move relative to each other due to the difference in speed, the contact state between the sealing drive wheel c43 and the cam c4 can still be ensured, and the contour change of the cam c4 is accurately transmitted to the sealing wheel c41, so as to achieve stable can sealing action.

[0057] This embodiment can be further configured as follows: the feeding guide mechanism b includes a guide plate b1, a mounting base b2 distributed at one end of the guide plate b1, and a detection element b4 distributed at the other end of the guide plate b1. One end of the guide plate b1 is provided with a strip hole b3, and the mounting base b2 is provided with a locking hole corresponding to the strip hole b3. The locking hole and the strip hole b3 are detachably connected by fasteners. The other end of the guide plate b1 is provided with a connecting hole, and the detection element b4 is fixed in the connecting hole.

[0058] The guide plate b1 is aligned with the set hole of the mounting base b2 through a strip-shaped hole b3 at one end, and is fixed by fasteners (such as bolts) passing through the strip-shaped hole b3 and the set hole. Since the strip-shaped hole b3 is a long strip structure, after loosening the fasteners, the guide plate b1 can slide along the length of the strip-shaped hole b3 to adjust its relative position with the feed port or feed channel of the turntable a, so as to adapt to filters of different diameters or widths. After adjustment, the fasteners can be tightened again to lock the position. A detection element b4 (such as a photoelectric sensor, proximity switch, etc.) is fixed in the connection hole at the other end of the guide plate b1. When the filter slides along the surface of the guide plate b1 into the feeding position, the detection element b4 can sense its position status (such as whether it has reached the predetermined position, whether there is jamming or deviation) and feed the signal back to the equipment control system. If an abnormality is detected (such as not in position or deviation), the system can trigger an alarm or suspend the subsequent sealing action to avoid sealing failure due to feeding deviation. If the detection is normal, a signal is sent to allow the turntable a to continue rotating and transport the filter to the next process, realizing precise control and automated connection of the feeding process.

[0059] This embodiment can be further configured as follows: the pressure vessel mechanism e includes a pressure vessel plate e1 distributed above the turntable a and a pressure vessel cylinder e2 linked with the pressure vessel plate e1, and the body of the pressure vessel cylinder e2 is fixed on the frame.

[0060] Before the sealing action, the pressure plate e1 is driven by the pressure cylinder e2 to press down and fix the filter on the positioning seat to prevent it from shifting during the sealing process. This ensures that the sealing wheel c41 and the filter shell are in precise contact position, thereby improving the sealing performance and consistency of the sealing and reducing the defect rate.

[0061] This embodiment can be further configured as follows: a pre-compression mechanism f is also provided on the frame between the feeding guide mechanism b and the sealing device c. The pre-compression mechanism f includes a pre-compression plate f1 distributed above the turntable a and a pre-compression cylinder f2 linked with the pre-compression plate f1. The body of the pre-compression cylinder f2 is fixed on the frame.

[0062] The pre-pressure cylinder f2 drives the pre-pressure plate f1 to initially press down and fix the filter, which is mainly used to initially compact the filter.

[0063] This embodiment can be further configured as follows: the discharge device d includes a discharge push plate d1 and a discharge cylinder d2 that is linked with the discharge push plate d1. The body of the discharge cylinder d2 is fixed on the frame, and a protective plate d3 is connected to the end of the discharge push plate d1.

[0064] The protective plate d3 at the end of the discharge pusher d1 can disperse the contact pressure and buffer the thrust, reducing damage to the filter surface during the discharge process. At the same time, the automated structure driven by the discharge cylinder d2 achieves seamless connection from can sealing to discharge, avoiding manual intervention and improving the overall efficiency of the production line.

[0065] This embodiment can be further configured as follows: the sealing mechanism also includes an inner shaft c3 fixed on the frame, a main shaft c1 sleeved on the outer periphery of the inner shaft c3, a positioning seat integrally formed with the inner shaft c3 at the upper end of the inner shaft c3, and a material lifting assembly for lifting the filter with sealed can on the positioning seat in linkage with the inner shaft c3. The material lifting assembly includes a material lifting rod c45 and a push plate c46. The inner shaft c3 has an ejection channel in the middle that runs through the inner shaft c3 along the axial direction of the inner shaft c3. The material lifting rod c45 is slidably disposed in the ejection channel. The upper end of the material lifting rod c45 is linked with a material lifting plate. The lower end of the material lifting rod c45 is linked with the middle part of the push plate c46. The two ends of the push plate c46 are symmetrically linked with ejection cylinders c47. The body of the ejection cylinder c47 is fixed on the frame.

[0066] The inner shaft c3 is fixed to the frame, and the main shaft c1 is fitted inside it to allow rotation. The positioning seat at the upper end of the inner shaft c3 is used to support the filter after sealing. After the sealing process is completed, the ejector cylinder c47 pushes the push plate c46 upward, causing the push rod c45 to slide upward along the ejection channel. The ejector plate rises accordingly, lifting the filter on the positioning seat and detaching it from the positioning seat for easy removal by the subsequent discharge device d (such as a robot or conveyor belt). The ejector plate can be made of non-metallic material to reduce the risk of damage. After ejection, the ejector cylinder c47 reverses its movement, and the push plate c46 drives the push rod c45 and the ejector plate back to their initial positions, waiting for the next round of sealing to complete the cycle and repeat the process, achieving continuous automated discharge.

[0067] The specific working principle of this embodiment is as follows:

[0068] First, the filter enters the arc-shaped receiving port a1 of the turntable a along the guide plate b1 of the feeding guide mechanism b. The detection element b4 (such as a photoelectric sensor, proximity switch, etc.) in the connecting hole at the other end of the guide plate b1 detects the position status of the filter in real time. If the detection is normal, a signal is sent to allow the turntable a to rotate, and the filter is transported to the next station through the arc-shaped receiving port a1 on the turntable a. If the detection is abnormal, an alarm is triggered or subsequent actions are paused.

[0069] Subsequently, turntable a transports the filter to below the pre-compression mechanism f. The pre-compression cylinder f2 of the pre-compression mechanism f pushes the pre-compression plate f1 downwards to the top of the filter and applies pressure. After pre-compression is complete, turntable a continues to rotate, transporting the filter to the sealing device c. At this time, the pressure tank cylinder e2 pushes the pressure tank plate e1 downwards to the top of the filter and applies pressure, tightly pressing the filter against the positioning seat to form a stable clamping state and prevent displacement during the sealing process.

[0070] Next, the sealing mechanism of the sealing device c begins to perform the sealing action: the second servo motor c14 drives the second synchronous belt c12 to rotate through the second drive wheel c13, and the second synchronous belt c12 drives the second transmission wheel c7 (rotating synchronously with the main shaft c1), thereby driving the main shaft c1 and the disc c2 (sealing assembly) sleeved on the outer circumference of the main shaft c1 to rotate synchronously; the first servo motor c15 drives the first synchronous belt c10 to rotate through the first drive wheel c11, and the first synchronous belt c10 drives the first transmission wheel c6 (which can rotate relative to the main shaft c1) to rotate, and the speed difference between the first transmission wheel c6 and the second transmission wheel c7 is changed by adjusting the speed parameters of the two servo motors; the moving component controls the clutch c5 to move axially along the main shaft c1, and when the clutch c5 is linked with the first transmission wheel c6 (the linkage hole c23 on the lower end face of the clutch c5 is inserted into the upper cylinder of the clutch component c24 of the first transmission wheel c6), the first transmission wheel c6... Rotation is transmitted through clutch c5 to cam c4, which rotates synchronously with it (cam c4 is rotatably connected to main shaft c1 via fourth bearing c9). When cam c4 rotates with first transmission wheel c6 (there is a speed difference with main shaft c1), the contour change of its outer circumference pushes the sealing drive wheel c43 of the sealing assembly (the sealing assembly includes an actuator arm c39 rotatably mounted at the mounting hole of disc c2, the lower end of actuator arm c39 is linked to sealing drive wheel c43 via lower connecting plate c42, the end of lower connecting plate c42 near actuator arm c39 is connected to positioning post via tension spring c44, tension spring c44 continuously pulls lower connecting plate c42 so that sealing drive wheel c43 is always pressed against the outer circumference of cam c4), causing lower connecting plate c42 to rotate around actuator arm c39. After being pushed, actuator arm c39 rotates around mounting hole, and then drives sealing wheel c41 to move towards filter housing via upper connecting plate c40, completing the sealing action.

[0071] After the sealing is completed, the pressure tank cylinder e2 resets, releasing the pressure on the filter; at this time, the material ejection assembly on the inner shaft c3 is activated, and the ejection cylinder c47 pushes the push plate c46 to move upward, causing the ejector rod c45 to slide upward along the ejection channel in the middle of the inner shaft c3. The material ejection plate at the upper end of the ejector rod c45 rises accordingly, lifting the filter on the positioning seat at the upper end of the inner shaft c3 and causing it to disengage from the positioning seat.

[0072] Finally, turntable a transports the lifted filter to the discharge device d. The discharge cylinder d2 of the discharge device d is activated, and its piston rod extends forward to push the discharge push plate d1 (with a protective plate d3 connected to its end) towards the filter. The protective plate d3 (made of soft rubber, silicone, or elastic plastic) contacts the filter housing first, dispersing the contact pressure and buffering the thrust, and smoothly pushing the filter out from the arc-shaped receiving port a1 of turntable a, transferring it to the subsequent conveyor belt or collection device, completing the entire can sealing process.

Claims

1. An adjustable-speed filter automatic can sealing machine, comprising a rack, a rotating disc rotatably installed on the rack, a plurality of groups of arc-shaped material receiving ports being uniformly and sequentially arranged along the circumference of the rotating disc, a material feeding guide mechanism, an edge sealing device and a material discharging device being sequentially arranged along the circumference of the rotating disc, the edge sealing device comprising a can pressing mechanism arranged above the rotating disc and a can sealing mechanism arranged below the rotating disc and opposite to the can pressing mechanism, the can sealing mechanism comprising a main shaft and a disc synchronously rotating with the main shaft and coaxially arranged with the main shaft, a plurality of groups of edge sealing assemblies being sequentially and uniformly arranged along the circumference of the disc, a cam, a clutch, a first transmission wheel and a second transmission wheel synchronously rotating with the main shaft being sequentially arranged along the axial direction of the main shaft, the cam synchronously rotating with the clutch, the clutch being linked with a moving assembly, and the moving assembly being used to control the clutch to reciprocate along the axial direction of the main shaft so as to realize linkage or separation between the clutch and the first transmission wheel, characterized in that: The first transmission wheel is linked to a first drive wheel via a first synchronous belt. The first drive wheel is linked to a first servo motor. The first servo motor drives the first synchronous belt to rotate via the first drive wheel, and then the first synchronous belt drives the first drive wheel to rotate relative to the main shaft. The second transmission wheel is linked to a second drive wheel via a second synchronous belt. The second drive wheel is linked to a second servo motor. The second servo motor drives the second synchronous belt to rotate via the second drive wheel, and then the second synchronous belt drives the second drive wheel to rotate. The main shaft rotates synchronously with the second drive wheel.

2. The adjustable speed filter automatic 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 each bearing is linked to the main shaft, and its 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 locking washer fitted onto the outer circumference of the main shaft is installed in the second inner ring groove. There is an installation gap between the inner edge of the first locking washer and the outer circumference of the main shaft. The lower end face of the outer ring of the first bearing presses against the first locking washer. At the inner edge of the moving washer; between the second transmission wheel and the main shaft, there is a transmission shaft sleeve fixedly fitted on the outer circumference of the main shaft. Above the transmission shaft sleeve, there is an upper support ring 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. The outer circumference of the transmission shaft sleeve is provided with an isolation ring protruding outward and distributed between the first transmission wheel and the second transmission wheel. Above the inner ring of the second transmission wheel, there is a third inner ring groove adapted to the isolation ring. There is a separation gap between the upper section of the isolation ring and the lower end face of the first transmission wheel.

3. The adjustable speed filter automatic 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.

4. The adjustable speed filter automatic sealing machine according to claim 3, characterized in that: The moving assembly 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 circumferential surface of the clutch has a limiting ring extending outwards. The inner ring of the second bearing is fitted onto 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 has a fourth inner ring groove that engages with the second stop washer. The two sets of push blocks are symmetrically distributed on both sides of the second bearing, with each set of push blocks located towards the second bearing. A U-shaped opening groove is provided on one side of the bearing, with the opening of the U-shaped opening groove facing the second bearing, and the outer ring of the second bearing inserted into the U-shaped opening groove; 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, which is rotatably connected to the output end of the lifting cylinder. The body of the lifting cylinder is hinged to the frame.

5. The adjustable speed filter automatic sealing machine according to any one of claims 1 to 4, characterized in that: The disc has several sets of mounting holes arranged at intervals along the circumference of the disc. The edge sealing assembly includes an actuator arm rotatably disposed at the mounting hole, with mounting holes extending from both ends of the actuator arm. An upper connecting plate is linked to the upper end of the actuator arm, and an edge sealing wheel is rotatably connected to the end of the upper connecting plate away from the actuator arm. A lower connecting plate is linked to the lower end of the actuator arm, and an edge sealing drive wheel is linked to the end of the lower connecting plate away from the actuator arm. A tension spring is linked to the end of the lower connecting plate near the actuator arm, and a positioning post is linked to the end of the tension spring away from the lower connecting plate. The positioning post is distributed on the side near the edge sealing drive wheel. The tension spring pulls the lower connecting plate to make the edge sealing drive wheel always press against the outer circumferential surface of the cam.

6. The adjustable speed filter automatic sealing machine according to claim 1, characterized in that: The sealing mechanism also includes an inner shaft fixed on the frame, the main shaft is sleeved on the outer circumference of the inner shaft, the upper end of the inner shaft is provided with a positioning seat integrally formed with the inner shaft, and the inner shaft is linked to a material lifting assembly for lifting the filter that has completed sealing on the positioning seat.

7. The adjustable speed filter automatic sealing machine according to claim 6, characterized in that: The ejector assembly includes an ejector rod and a pusher plate. The inner shaft has an ejection channel that runs through the inner shaft along its axial direction. The ejector rod is slidably disposed in the ejection channel. The upper end of the ejector rod is linked to an ejector plate. The lower end of the ejector rod is linked to the middle of the pusher plate. The two ends of the pusher plate are symmetrically linked to ejector cylinders. The body of the ejector cylinder is fixed on the frame.

8. The adjustable speed filter automatic sealing machine according to any one of claims 1 to 4, characterized in that: The pressure vessel mechanism includes a pressure vessel plate distributed above the turntable and a pressure vessel cylinder that is linked to the pressure vessel plate. The body of the pressure vessel cylinder is fixed on the frame.

9. The adjustable speed filter automatic sealing machine according to any one of claims 1 to 4, characterized in that: The frame is also provided with a pre-compression mechanism distributed between the feeding guide mechanism and the edge sealing device. The pre-compression mechanism includes a pre-compression plate distributed above the turntable and a pre-compression cylinder linked with the pre-compression plate. The body of the pre-compression cylinder is fixed on the frame.

10. The adjustable speed filter automatic sealing machine according to any one of claims 1 to 4, characterized in that: The discharge device includes a discharge push plate and a discharge cylinder that is linked to the discharge push plate. The body of the discharge cylinder is fixed on the frame, and a protective plate is connected to the end of the discharge push plate.

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