Novel high-speed end seal intermittent cutting device

Abstract

The utility model discloses a novel high-speed end seal intermittent cutting device, and relates to the technical field of packaging machinery. According to the novel high-speed end seal intermittent cutting-off device, the structure of an existing high-speed end seal intermittent cutting-off device is improved, gear transmission between the servo motor assembly and the eccentric shaft is improved into synchronous belt transmission or chain transmission, or the servo motor assembly is directly connected with the eccentric shaft through a coupler, and a supporting shaft and a swing arm component are omitted; and the needle bearing is directly assembled on the eccentric shaft. According to the end seal intermittent cutting device, the structure of an existing end seal intermittent cutting device is simplified, the weight of the end seal intermittent cutting device is reduced, vibration is reduced, the simplified structure effectively reduces materials, machining precision and assembling precision of all parts, and therefore the cost of the end seal intermittent cutting device is integrally reduced.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and more specifically to a novel high-speed end-sealing intermittent cutting device. Background Technology

[0002] Currently, for the packaging products output by pillow packaging machines or horizontal filling packaging machines, according to packaging requirements, several packaging products need to be connected together without being completely cut off to form a multi-pack product. After reaching the set quantity, the packaging film of the next two adjacent packaging products is cut to form a multi-pack product.

[0003] For example, the authorization announcement number CN214876071U, the authorization announcement date is November 26, 2021, and the name is a utility model patent entitled "A High-Speed ​​End-Sealing Intermittent Cutting Device". Specifically, it discloses: an active horizontal sealing shaft is provided at the lower part of the horizontal sealing bracket, a bearing seat is provided at the upper part of the horizontal sealing bracket, and a driven horizontal sealing shaft is provided in the bearing seat. The active horizontal sealing shaft and the driven horizontal sealing shaft are meshed by a first active gear provided on the active horizontal sealing shaft and a first driven gear provided on the driven horizontal sealing shaft. The bearing seat is also provided with a motor, a second active gear, an eccentric shaft and a support shaft. A second driven gear is provided on the eccentric shaft. The second active gear and the second driven gear are meshed. The bottom of the support shaft is fixedly connected to one end of the swing arm, and the other end of the swing arm is connected to the eccentric shaft. A needle roller bearing is provided at the center of the swing arm, and one end of the needle roller bearing is connected to a cam provided on the driven horizontal sealing shaft. Both the active horizontal sealing shaft and the driven horizontal sealing shaft are provided with a sealer, and a cutter is provided inside the sealer.

[0004] In the aforementioned prior art intermittent end-sealing cutting device, the transmission mechanism for the reciprocating motion required to perform intermittent cutting needs a certain amount of movement space on the end-sealing device, resulting in a certain distance between the position of the drive motor and the transmission mechanism. The prior art intermittent end-sealing cutting device uses gears for transmission, with the main gear on the motor meshing with the second driven gear on the eccentric shaft to achieve transmission.

[0005] On the one hand, the large size of the gears, due to the distance between the motor and the eccentric shaft, leads to an increase in the overall size of the intermittent end-sealing cutting device. On the other hand, the large size of the gears, eccentric shaft, support shaft, swing arm, and other structures in the intermittent end-sealing cutting device results in an increased overall weight, which reduces the starting frequency of the device and affects its stability. The only solution is to increase the rigidity and strength of the frame to reduce the impact of vibration on the sealing performance, indirectly increasing the cost of the device.

[0006] On the other hand, the existing end-sealing intermittent cutting device uses gears for transmission. Its transmission accuracy needs to be controlled by the machining accuracy of the center distance, and the transmission stability also needs to be ensured by the machining accuracy of the gears and their mounting base. This indirectly increases the processing cost of the end-sealing intermittent cutting device. Utility Model Content

[0007] To overcome the defects and shortcomings of the existing technology, this utility model provides a novel high-speed end-sealing intermittent cutting device. The purpose of this invention is to simplify the structure of existing end-sealing intermittent cutting devices, reduce their weight, decrease vibration, improve operational stability, and reduce material and processing costs. The novel high-speed end-sealing intermittent cutting device provided by this utility model is a structural improvement on existing high-speed end-sealing intermittent cutting devices. The gear transmission between the servo motor assembly and the eccentric shaft is changed to a synchronous belt or chain transmission, or the servo motor assembly is directly connected to the eccentric shaft via a coupling. The support shaft and swing arm components are eliminated, and the needle roller bearing is directly assembled onto the eccentric shaft. This simplifies the structure of existing end-sealing intermittent cutting devices, reduces their weight, and thus reduces vibration. The simplified structure effectively reduces the material, processing, and assembly precision requirements of each component, thereby reducing the overall cost of the end-sealing intermittent cutting device.

[0008] To address the problems existing in the prior art, the present invention is achieved through the following technical solution.

[0009] The first aspect of this utility model provides a novel high-speed end-sealing intermittent cutting device, including a horizontal sealing bracket, an active horizontal sealing shaft, and a driven horizontal sealing shaft. The active and driven horizontal sealing shafts are driven by a meshing active gear and a driven gear. A support mounting plate is mounted on the horizontal sealing bracket at one end of the driven horizontal sealing shaft. An eccentric shaft bearing seat is provided on the support mounting plate, and an eccentric shaft is mounted inside the eccentric shaft bearing seat. A needle roller bearing is provided at the end of the eccentric shaft near the driven horizontal sealing shaft. A retaining block is fixedly mounted at the end of the driven horizontal sealing shaft, and the needle roller bearing is fitted with a retaining groove on the retaining block. A driven synchronous pulley is mounted at the end of the eccentric shaft away from the driven horizontal sealing shaft. A servo motor assembly is mounted on the support mounting plate, and an active synchronous pulley is mounted on the output shaft of the servo motor assembly. The active and driven synchronous pulleys are driven by a synchronous belt.

[0010] More preferably, the transverse sealing bracket includes a transverse sealing bottom plate, a first transverse sealing side plate, a second transverse sealing side plate, and a transverse sealing top plate; a sliding window is provided on the upper part of both the first transverse sealing side plate and the second transverse sealing side plate, and a support bearing seat is slidably assembled in the sliding window. A compression spring is connected above the support bearing seat, and the compression spring is located between the support bearing seat and the transverse sealing top plate.

[0011] More preferably, the horizontal sealing plate is threaded with an adjusting screw, the bottom of which abuts against a compression spring.

[0012] More preferably, the support bearing housing is provided with a self-lubricating bearing, which is connected to the driven transverse seal shaft via a keyway and a key.

[0013] More preferably, the support mounting plate is located at the end side of the active and driven transverse sealing shafts, which are driven by gear meshing.

[0014] More preferably, the support mounting plate is located above the end of the driven transverse sealing shaft, and the lower part of both ends of the support mounting plate is provided with reinforcing ribs. One side of the reinforcing ribs is fixed to the transverse sealing bracket, and the other side of the reinforcing ribs is fixed to the support mounting plate.

[0015] More preferably, the support mounting plate is located on one side of the driven transverse sealing shaft end; a reinforcing rib is provided on the upper edge of the support mounting plate, one side of the reinforcing rib is fixed to the transverse sealing bracket, and the other side of the reinforcing rib is fixed to the support mounting plate.

[0016] The second aspect of this utility model provides a novel high-speed end-sealing intermittent cutting device, including a horizontal sealing bracket, an active horizontal sealing shaft, and a driven horizontal sealing shaft. The active and driven horizontal sealing shafts are driven by a meshing active gear and a driven gear. A support mounting plate is mounted on the horizontal sealing bracket at one end of the driven horizontal sealing shaft. An eccentric shaft bearing seat is provided on the support mounting plate, and an eccentric shaft is mounted inside the eccentric shaft bearing seat. A needle roller bearing is provided at the end of the eccentric shaft near the driven horizontal sealing shaft. A retaining block is fixedly mounted at the end of the driven horizontal sealing shaft, and the needle roller bearing is fitted with a retaining groove on the retaining block. A driven sprocket is mounted at the end of the eccentric shaft away from the driven horizontal sealing shaft. A servo motor assembly is mounted on the support mounting plate, and an active sprocket is mounted on the output shaft of the servo motor assembly. The active sprocket and the driven sprocket are driven by a chain.

[0017] More preferably, the transverse sealing bracket includes a transverse sealing bottom plate, a first transverse sealing side plate, a second transverse sealing side plate, and a transverse sealing top plate; a sliding window is provided on the upper part of both the first transverse sealing side plate and the second transverse sealing side plate, and a support bearing seat is slidably assembled in the sliding window. A compression spring is connected above the support bearing seat, and the compression spring is located between the support bearing seat and the transverse sealing top plate.

[0018] More preferably, the horizontal sealing plate is threaded with an adjusting screw, the bottom of which abuts against a compression spring.

[0019] More preferably, the support bearing housing is provided with a self-lubricating bearing, which is connected to the driven transverse seal shaft via a keyway and a key.

[0020] More preferably, the support mounting plate is located at the end side of the active and driven transverse sealing shafts, which are driven by gear meshing.

[0021] More preferably, the support mounting plate is located above the end of the driven transverse sealing shaft, and the lower part of both ends of the support mounting plate is provided with reinforcing ribs. One side of the reinforcing ribs is fixed to the transverse sealing bracket, and the other side of the reinforcing ribs is fixed to the support mounting plate.

[0022] More preferably, the support mounting plate is located on one side of the driven transverse sealing shaft end; a reinforcing rib is provided on the upper edge of the support mounting plate, one side of the reinforcing rib is fixed to the transverse sealing bracket, and the other side of the reinforcing rib is fixed to the support mounting plate.

[0023] The third aspect of this utility model provides a novel high-speed end-sealing intermittent cutting device, including a horizontal sealing bracket, an active horizontal sealing shaft, and a driven horizontal sealing shaft. The active and driven horizontal sealing shafts are driven by a meshing active gear and a driven gear. A support mounting plate is mounted on the horizontal sealing bracket at one end of the driven horizontal sealing shaft. An eccentric shaft bearing seat is provided on the support mounting plate, and an eccentric shaft is mounted inside the eccentric shaft bearing seat. A needle roller bearing is provided at the end of the eccentric shaft near the driven horizontal sealing shaft. A retaining block is fixedly mounted at the end of the driven horizontal sealing shaft, and the needle roller bearing is fitted with a retaining groove on the retaining block. The end of the eccentric shaft away from the driven horizontal sealing shaft is connected to the output shaft of a servo motor assembly via a coupling.

[0024] More preferably, the servo motor assembly includes a servo motor and a reducer, wherein the reducer is an angle reducer.

[0025] More preferably, the transverse sealing bracket includes a transverse sealing bottom plate, a first transverse sealing side plate, a second transverse sealing side plate, and a transverse sealing top plate; a sliding window is provided on the upper part of both the first transverse sealing side plate and the second transverse sealing side plate, and a support bearing seat is slidably assembled in the sliding window. A compression spring is connected above the support bearing seat, and the compression spring is located between the support bearing seat and the transverse sealing top plate.

[0026] More preferably, the horizontal sealing plate is threaded with an adjusting screw, the bottom of which abuts against a compression spring.

[0027] More preferably, the support bearing housing is provided with a self-lubricating bearing, which is connected to the driven transverse seal shaft via a keyway and a key.

[0028] More preferably, the support mounting plate is located at the end side of the active and driven transverse sealing shafts, which are driven by gear meshing.

[0029] More preferably, the support mounting plate is located above the end of the driven transverse sealing shaft, and the lower part of both ends of the support mounting plate is provided with reinforcing ribs. One side of the reinforcing ribs is fixed to the transverse sealing bracket, and the other side of the reinforcing ribs is fixed to the support mounting plate.

[0030] More preferably, the support mounting plate is located on one side of the driven transverse sealing shaft end; a reinforcing rib is provided on the upper edge of the support mounting plate, one side of the reinforcing rib is fixed to the transverse sealing bracket, and the other side of the reinforcing rib is fixed to the support mounting plate.

[0031] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0032] 1. Compared with the prior art, the novel high-speed end-sealing intermittent cutting device provided by the first aspect of this utility model replaces gear transmission with synchronous belt transmission. On the one hand, the accuracy requirements for the center distance of the mounting holes for eccentric shafts and servo motor components on the support mounting plate are reduced. At the same time, the machining accuracy requirements for the synchronous belt pulley are also reduced compared to gears. The tensioning of the synchronous belt only requires the addition of a tensioning pulley or guide pulley, thus reducing the machining accuracy requirements of the end-sealing intermittent cutting device. On the other hand, the synchronous belt pulley can be made of aluminum alloy to reduce weight, thereby reducing the requirements for the rigidity and strength of the horizontal sealing bracket, reducing material costs. After the weight of the transmission structure is optimized, the vibration during startup can also be reduced, improving the overall operational stability.

[0033] 2. In existing end-sealing intermittent cutting devices, the reciprocating trajectory of the needle roller bearing is achieved through a combination of an eccentric shaft, a swing arm, and a support shaft. The support shaft provides the rotation fulcrum, and the eccentric shaft drives the swing arm to reciprocate, resulting in forward and reverse motion of the eccentric shaft. This, in turn, causes the swing arm to swing, ultimately achieving the reciprocating motion of the needle roller bearing. This forward and reverse rotation increases vibration and reduces response accuracy. This application directly mounts the needle roller bearing on the eccentric shaft, allowing it to rotate in only one direction without requiring forward or reverse rotation. When the servo motor assembly drives the eccentric shaft, the response is more sensitive, and the starting vibration is reduced, improving overall operational stability. Furthermore, this application leverages the advantages of servo motors, designing the speed curve of the eccentric shaft to make the reciprocating motion of the needle roller bearing smoother. This application reduces the number of components, lowers device costs, changes the motion method, reduces starting vibration, and improves operational stability.

[0034] 3. The novel high-speed end-seal intermittent cutting device provided in the second aspect of this utility model replaces gear transmission with chain transmission. On the one hand, since this application directly connects the needle roller bearing to the eccentric shaft, the movement mode of the eccentric shaft changes from forward and reverse rotation to rotation in one direction (no forward and reverse rotation is required), reducing the strength requirements of the transmission components and allowing the use of chain transmission, which has lower material costs. On the other hand, the chain transmission method reduces the accuracy requirements for the center distance of the mounting holes for eccentric shaft assembly and servo motor assembly on the support mounting plate. Compared with gears, the machining accuracy requirements are also reduced. Chain tensioning only requires the addition of a tensioning wheel, reducing the machining accuracy requirements of the end-seal intermittent cutting device. Thirdly, the weight of the chain transmission is much lighter than that of gears, thereby reducing the requirements for the rigidity and strength of the horizontal seal support, reducing material costs. After the weight of the transmission structure is optimized, the vibration during startup can also be reduced, improving the overall operational stability.

[0035] 4. The novel high-speed end-sealing intermittent cutting device provided in the third aspect of this utility model adopts a direct connection between the servo motor assembly and the eccentric shaft, which eliminates the intermediate transmission components, further reduces material costs, and eliminates the requirement for center distance machining accuracy. Compared with the first two end-sealing intermittent cutting devices provided in this application, it has lower cost, simpler structure, and more stable operation.

[0036] 5. Compared with the novel high-speed end-sealing intermittent cutting device provided in the first and second aspects of this utility model, synchronous belt drive has the advantages of maintenance-free operation and low noise compared with chain drive.

[0037] 6. The transverse sealing bracket of this utility model is a rectangular frame composed of a transverse sealing base plate, a first transverse sealing side plate, a second transverse sealing side plate, and a transverse sealing top plate. Its structure has strong stability, ensuring the stability of the movement of the active and driven transverse sealing shafts. The sliding window, support bearing seat, compression spring, and adjusting screw facilitate adjustment of the sealing pressure between the seal on the driven transverse sealing shaft and the seal on the active transverse sealing shaft. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural diagram of the high-speed end-sealing intermittent cutting device of this utility model;

[0039] Figure 2 This is a schematic diagram of the main structure of the high-speed end-sealing intermittent cutting device of this utility model;

[0040] Figure 3 This is a schematic diagram of the structure of the transverse sealing side plate of the high-speed end-sealing intermittent cutting device of this utility model;

[0041] Figure 4This is a front view schematic diagram of the high-speed end-cap intermittent cutting device directly connected to the servo drive component of this utility model;

[0042] Figure 5 This is a side view of the high-speed end-cap intermittent cutting device directly connected to the servo drive component of this utility model.

[0043] Reference numerals: 1. Horizontal seal bracket; 2. Active horizontal seal shaft; 3. Driven horizontal seal shaft; 4. Active gear; 5. Driven gear; 6. Support mounting plate; 7. Eccentric shaft; 8. Eccentric shaft bearing housing; 9. Needle roller bearing; 10. Slot; 11. Slot block; 12. Driven synchronous pulley; 13. Active synchronous pulley; 14. Servo motor assembly; 15. Synchronous belt; 16. Horizontal seal bottom plate; 17. First horizontal seal side plate; 18. Second horizontal seal side plate; 19. Horizontal seal top plate; 20. Sliding window; 21. Support bearing housing; 22. Compression spring; 23. Adjusting screw; 24. Self-lubricating bearing; 25. Reinforcing rib plate; 26. Servo motor; 27. Reducer. Detailed Implementation

[0044] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0045] Example 1

[0046] As a preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 1 and attached Figure 2 As shown, this embodiment discloses a novel high-speed end-sealing intermittent cutting device, including a horizontal sealing bracket 1, an active horizontal sealing shaft 2, and a driven horizontal sealing shaft 3. The active horizontal sealing shaft 2 and the driven horizontal sealing shaft 3 are driven by a meshing transmission through an active gear 4 and a driven gear 5. A support mounting plate 6 is mounted on the horizontal sealing bracket 1 at one end of the driven horizontal sealing shaft 3. An eccentric shaft bearing seat 8 is provided on the support mounting plate 6. An eccentric shaft 7 is mounted inside the eccentric shaft bearing seat 8. A needle roller bearing 9 is provided at the end of the eccentric shaft 7 near the driven horizontal sealing shaft 3. A retaining block 11 is fixedly mounted at the end of the driven horizontal sealing shaft 3. The needle roller bearing 9 is fitted with a retaining groove 10 on the retaining block 11. A driven synchronous pulley 12 is mounted at the end of the eccentric shaft 7 away from the driven horizontal sealing shaft 3. A servo motor assembly 14 is mounted on the support mounting plate 6. An active synchronous pulley 13 is mounted on the output shaft of the servo motor assembly 14. The active synchronous pulley 13 and the driven synchronous pulley 12 are driven by a synchronous belt 15.

[0047] On the one hand, the precision requirements for the center distance of the mounting holes on the support mounting plate 6 for assembling the eccentric shaft 7 and the mounting holes for assembling the servo motor assembly 14 are reduced. At the same time, the machining precision requirements for the synchronous belt pulley are also reduced compared to gears. The tensioning of the synchronous belt 15 only requires the addition of a tensioning pulley or guide pulley, which reduces the machining precision requirements for the end-seal intermittent cutting device. On the other hand, the synchronous belt pulley can be made of aluminum alloy to reduce weight, thereby reducing the requirements for the rigidity and strength of the transverse seal bracket 1, reducing material costs. After the weight of the transmission structure is optimized, the vibration during startup can also be reduced, and the overall operational stability can be improved.

[0048] This application directly mounts the needle roller bearing 9 onto the eccentric shaft 7, allowing the eccentric shaft 7 to rotate in only one direction, eliminating the need for forward and reverse rotation. When the servo motor assembly 14 drives the eccentric shaft 7, the response is more sensitive, and the starting vibration is reduced, which is beneficial to improving overall operational stability. Furthermore, this application can leverage the advantages of the servo motor 26, using it to design the speed curve of the eccentric shaft 7 during operation, resulting in a smoother reciprocating motion of the needle roller bearing 9. This application reduces the number of components used, lowers device costs, and changes the motion mode, reducing starting vibration and improving operational stability.

[0049] The high-speed end-sealing intermittent cutting device provided in this embodiment reduces the number of structural parts, lowers part costs, improves assembly efficiency, reduces maintenance costs, and achieves structural miniaturization.

[0050] As one implementation method of this embodiment, please refer to the appendix to the specification. Figure 2 As shown, the transverse sealing bracket 1 includes a transverse sealing base plate 16, a first transverse sealing side plate 17, a second transverse sealing side plate 18, and a transverse sealing top plate 19. The transverse sealing bracket 1 is a rectangular frame composed of the transverse sealing base plate 16, the first transverse sealing side plate 17, the second transverse sealing side plate 18, and the transverse sealing top plate 19. Its structure has strong stability, ensuring the stability of the movement of the active transverse sealing shaft 2 and the driven transverse sealing shaft 3.

[0051] Refer to the instruction manual appendix Figure 3 As shown, a sliding window 20 is provided on the upper part of the first horizontal sealing side plate 17 and the second horizontal sealing side plate 18. A support bearing seat 21 is slidably assembled in the sliding window 20. A compression spring 22 is connected above the support bearing seat 21. The compression spring 22 is located between the support bearing seat 21 and the horizontal sealing top plate 19.

[0052] Furthermore, an adjusting screw 23 is threadedly connected to the transverse sealing plate 19, and the bottom of the adjusting screw 23 abuts against the compression spring 22. The arrangement of the sliding window 20, the support bearing seat 21, the compression spring 22, and the adjusting screw 23 facilitates the adjustment of the sealing pressure between the seal on the driven transverse sealing shaft 3 and the seal on the active transverse sealing shaft 2.

[0053] As an example of this embodiment, a self-lubricating bearing 24 is provided inside the support bearing housing 21. The self-lubricating bearing 24 is connected to the driven transverse sealing shaft 3 via a keyway and a key. Due to the presence of the key, the self-lubricating bearing 24 and the driven transverse sealing shaft 3 are in clearance fit, preventing rotational misalignment, and the driven transverse sealing shaft 3 can reciprocate along its own axial direction.

[0054] As another example of this embodiment, refer to the appendix to the specification. Figure 1 and attached Figure 2 As shown, the support mounting plate 6 is located at the end of the active horizontal sealing shaft 2 and the driven horizontal sealing shaft 3, which are driven by gear meshing. As a structural variation, the support mounting plate 6 can also be located at the other end of the active horizontal sealing shaft 2 and the driven horizontal sealing shaft 3 (the other end away from their gear meshing end).

[0055] As another example of this embodiment, the support mounting plate 6 is located above the end of the driven transverse sealing shaft 3. Reinforcing ribs 25 are provided at the lower parts of both ends of the support mounting plate 6. One side of the reinforcing rib 25 is fixed to the transverse sealing bracket 1, and the other side of the reinforcing rib 25 is fixed to the support mounting plate 6. The support mounting plate 6 is used to fix and assemble the synchronous pulley and servo motor assembly 14, providing the necessary support force. Furthermore, to enhance the structural stability of the support mounting plate 6, reinforcing ribs 25 are added to improve its structural stability.

[0056] As another example of this embodiment, the support mounting plate 6 is located on one side of the end of the driven horizontal sealing shaft 3; a reinforcing rib plate 25 is provided on the upper edge of the support mounting plate 6, one side of the reinforcing rib plate 25 is fixed to the horizontal sealing bracket 1, and the other side of the reinforcing rib plate 25 is fixed to the support mounting plate 6. The position of the support mounting plate 6 can be adjusted according to the position requirements of the end-sealing intermittent cutting device on the packaging machine to avoid interference with other components.

[0057] Example 2

[0058] As a preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 1 and attached Figure 2 As shown, the instruction manual is attached. Figure 1 and attached Figure 2The synchronous belt pulley is replaced with a sprocket, and the synchronous belt 15 is replaced with a chain. Specifically, this embodiment provides a novel high-speed end-sealing intermittent cutting device, including a horizontal sealing bracket 1, an active horizontal sealing shaft 2, and a driven horizontal sealing shaft 3. The active horizontal sealing shaft 2 and the driven horizontal sealing shaft 3 are driven by a meshing transmission through an active gear 4 and a driven gear 5. A support mounting plate 6 is mounted on the horizontal sealing bracket 1 at one end of the driven horizontal sealing shaft 3. An eccentric shaft bearing seat 8 is provided on the support mounting plate 6. An eccentric shaft 7 is mounted inside the eccentric shaft bearing seat 8. A needle roller bearing 9 is provided at the end of the eccentric shaft 7 near the driven horizontal sealing shaft 3. A retaining block 11 is fixedly mounted at the end of the driven horizontal sealing shaft 3. The needle roller bearing 9 is fitted with a retaining groove 10 on the retaining block 11. A driven sprocket is mounted at the end of the eccentric shaft 7 away from the driven horizontal sealing shaft 3. A servo motor assembly 14 is mounted on the support mounting plate 6. An active sprocket is mounted on the output shaft of the servo motor assembly 14. The active sprocket and the driven sprocket are driven by a chain.

[0059] Replacing gear transmission with chain transmission offers several advantages. First, since the needle roller bearing 9 is directly connected to the eccentric shaft 7, the movement of the eccentric shaft 7 changes from forward and reverse rotation to rotation in one direction (eliminating the need for forward and reverse rotation). This reduces the strength requirements of the transmission components, allowing for the use of chain transmission, which has lower material costs. Second, chain transmission reduces the precision requirements for the center distance between the mounting holes on the support plate 6 used for mounting the eccentric shaft 7 and the mounting holes used for mounting the servo motor assembly 14. Compared to gears, the machining precision requirements are also reduced. Chain tensioning only requires the addition of a tensioning wheel, further lowering the machining precision requirements for the intermittent end-seal cutting device. Third, chain transmission is significantly lighter than gear transmission, thereby reducing the rigidity and strength requirements of the transverse seal bracket 1, lowering material costs. Optimizing the weight of the transmission structure also reduces starting vibration and improves overall operational stability.

[0060] The other structures in this embodiment are the same as in Embodiment 1, i.e., refer to the appendix of the specification. Figure 2 As shown, the horizontal sealing bracket 1 includes a horizontal sealing base plate 16, a first horizontal sealing side plate 17, a second horizontal sealing side plate 18, and a horizontal sealing top plate 19. (Refer to the appendix of the instruction manual.) Figure 3 As shown, both the first transverse sealing side plate 17 and the second transverse sealing side plate 18 have sliding windows 20 on their upper parts. A support bearing seat 21 is slidably fitted inside the sliding window 20. A compression spring 22 is connected above the support bearing seat 21, and the compression spring 22 is located between the support bearing seat 21 and the transverse sealing top plate 19. An adjusting screw 23 is threaded onto the transverse sealing top plate 19, and the bottom of the adjusting screw 23 abuts against the compression spring 22. A self-lubricating bearing 24 is installed inside the support bearing seat 21, and the self-lubricating bearing 24 is connected to the driven transverse sealing shaft 3 via a keyway and a key.

[0061] The support mounting plate 6 is located at the end of the active horizontal sealing shaft 2 and the driven horizontal sealing shaft 3, which are driven by gear meshing. The support mounting plate 6 is positioned above the end of the driven horizontal sealing shaft 3. Reinforcing ribs 25 are provided at the lower parts of both ends of the support mounting plate 6. One side of the reinforcing rib 25 is fixed to the horizontal sealing bracket 1, and the other side of the reinforcing rib 25 is fixed to the support mounting plate 6. Alternatively, the support mounting plate 6 is located on one side of the end of the driven horizontal sealing shaft 3; a reinforcing rib 25 is provided along the upper edge of the support mounting plate 6, one side of the reinforcing rib 25 is fixed to the horizontal sealing bracket 1, and the other side of the reinforcing rib 25 is fixed to the support mounting plate 6.

[0062] Example 3

[0063] As a preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 4 and attached Figure 5 As shown, this embodiment provides a novel high-speed end-sealing intermittent cutting device, including a horizontal sealing bracket 1, an active horizontal sealing shaft 2, and a driven horizontal sealing shaft 3. The active horizontal sealing shaft 2 and the driven horizontal sealing shaft 3 are driven by a meshing transmission through an active gear 4 and a driven gear 5. A support mounting plate 6 is mounted on the horizontal sealing bracket 1 at one end of the driven horizontal sealing shaft 3. An eccentric shaft bearing seat 8 is provided on the support mounting plate 6. An eccentric shaft 7 is mounted inside the eccentric shaft bearing seat 8. A needle roller bearing 9 is provided at the end of the eccentric shaft 7 near the driven horizontal sealing shaft 3. A retaining block 11 is fixedly mounted at the end of the driven horizontal sealing shaft 3. The needle roller bearing 9 is fitted with a retaining groove 10 on the retaining block 11. The end of the eccentric shaft 7 away from the driven horizontal sealing shaft 3 is connected to the output shaft of a servo motor assembly 14 through a coupling. By directly connecting the servo motor assembly 14 to the eccentric shaft 7, intermediate transmission components are eliminated, further reducing material costs. There are also no requirements for center distance machining accuracy. Compared with the two end-sealing intermittent cutting devices provided in this application, the cost is lower, the structure is simpler, and the operation is more stable.

[0064] Furthermore, the servo motor assembly 14 includes a servo motor 26 and a reducer 27, wherein the reducer 27 is an angle reducer.

[0065] The other structures in this embodiment are the same as those in Embodiments 1 and 2, i.e., refer to the appendix to the specification. Figure 2 As shown, the horizontal sealing bracket 1 includes a horizontal sealing base plate 16, a first horizontal sealing side plate 17, a second horizontal sealing side plate 18, and a horizontal sealing top plate 19. (Refer to the appendix of the instruction manual.) Figure 3As shown, both the first horizontal sealing side plate 17 and the second horizontal sealing side plate 18 have sliding windows 20 on their upper parts. A support bearing seat 21 is slidably fitted inside the sliding window 20. A compression spring 22 is connected above the support bearing seat 21, and the compression spring 22 is located between the support bearing seat 21 and the horizontal sealing top plate 19. An adjusting screw 23 is threaded onto the horizontal sealing top plate 19, and the bottom of the adjusting screw 23 abuts against the compression spring 22. A self-lubricating bearing 24 is installed inside the support bearing seat 21, and the self-lubricating bearing 24 is connected to the driven horizontal sealing shaft 3 via a keyway and a key. The support mounting plate 6 is located at the end of the drive horizontal sealing shaft 2 and the driven horizontal sealing shaft 3, which are driven by gear meshing. The support mounting plate 6 is located above the end of the driven horizontal sealing shaft 3, and reinforcing ribs 25 are provided at the lower parts of both ends of the support mounting plate 6. One side of the reinforcing rib 25 is fixed to the horizontal sealing bracket 1, and the other side of the reinforcing rib 25 is fixed to the support mounting plate 6. Alternatively, the support mounting plate 6 is located on one side of the end of the driven horizontal sealing shaft 3; a reinforcing rib plate 25 is provided on the upper edge of the support mounting plate 6, one side of the reinforcing rib plate 25 is fixed to the horizontal sealing bracket 1, and the other side of the reinforcing rib plate 25 is fixed to the support mounting plate 6.

[0066] In embodiments 1, 2, and 3 above, both the active horizontal sealing shaft 2 and the driven horizontal sealing shaft 3 are equipped with sealers, and cutters are installed inside the sealers. The cutter on the active horizontal sealing shaft 2 is a bottom cutter, and a small groove is opened at a predetermined distance L on the top surface of the bottom cutter. The cutter on the driven horizontal sealing shaft 3 is an upper cutter, and the cutting edge of the upper cutter is a Z-shaped cutting edge with a pitch length of L. In the cutting state, the cutting edge of the upper cutter cuts exactly at the position where the bottom cutter does not have a groove, and the packaging film is cut. In the non-cutting state, the cutting edge of the upper cutter cuts at the position where the bottom cutter has a groove, and the bottom of the packaging film is suspended and not cut. The packaging film is partially cut and partially not cut, forming a continuous package. The driven horizontal sealing shaft 3 reciprocates axially under the drive of the eccentric shaft 7 and the needle roller bearing 9, thereby controlling whether the upper cutter and the bottom cutter are in a cutting state or a non-cutting state when they are engaged.

[0067] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A new high-speed end-seal intermittent cutting device, comprising a transverse sealing support (1), a driving transverse sealing shaft (2) and a driven transverse sealing shaft (3), the driving transverse sealing shaft (2) and the driven transverse sealing shaft (3) being in meshing transmission through a driving gear (4) and a driven gear (5); characterized in that: A support mounting plate (6) is mounted on a horizontal sealing bracket (1) at one end of the driven horizontal sealing shaft (3). An eccentric shaft bearing seat (8) is provided on the support mounting plate (6). An eccentric shaft (7) is mounted inside the eccentric shaft bearing seat (8). A needle roller bearing (9) is provided at the end of the eccentric shaft (7) near the driven horizontal sealing shaft (3). A slot block (11) is fixedly mounted at the end of the driven horizontal sealing shaft (3). The needle roller bearing (9) is fitted with a slot (10) on the slot block (11). A driven synchronous pulley (12) is mounted at the end of the eccentric shaft (7) away from the driven horizontal sealing shaft (3). A servo motor assembly (14) is mounted on the support mounting plate (6). An active synchronous pulley (13) is mounted on the output shaft of the servo motor assembly (14). The active synchronous pulley (13) and the driven synchronous pulley (12) are driven by a synchronous belt (15).

2. The novel high speed end seal intermittent cut-off device of claim 1, wherein: The horizontal sealing bracket (1) includes a horizontal sealing bottom plate (16), a first horizontal sealing side plate (17), a second horizontal sealing side plate (18), and a horizontal sealing top plate (19); the upper part of the first horizontal sealing side plate (17) and the second horizontal sealing side plate (18) are provided with sliding windows (20), and a support bearing seat (21) is slidably assembled in the sliding window (20). A compression spring (22) is connected above the support bearing seat (21), and the compression spring (22) is located between the support bearing seat (21) and the horizontal sealing top plate (19).

3. The novel high speed end seal intermittent cut-off device of claim 2, wherein: An adjusting screw (23) is threaded onto the horizontal top plate (19), and the bottom of the adjusting screw (23) abuts against the compression spring (22).

4. The novel high speed end seal intermittent cut-off device of claim 2 or 3, wherein: The support bearing housing (21) is provided with a self-lubricating bearing (24), which is connected to the driven transverse sealing shaft (3) through a keyway and a key.

5. The novel high-speed end-sealing intermittent cutting device as described in any one of claims 1-3, characterized in that: The support mounting plate (6) is located at the end side of the active horizontal sealing shaft (2) and the driven horizontal sealing shaft (3) that are driven by gear meshing.

6. The novel high speed end seal intermittent cut-off device of any one of claims 1-3, wherein: The support mounting plate (6) is located above the end of the driven horizontal sealing shaft (3). The lower part of both ends of the support mounting plate (6) is provided with reinforcing ribs (25). One side of the reinforcing ribs (25) is fixed to the horizontal sealing bracket (1), and the other side of the reinforcing ribs (25) is fixed to the support mounting plate (6).

7. The novel high speed end seal intermittent cut-off device of any one of claims 1-3, wherein: The support mounting plate (6) is located on one side of the end of the driven horizontal sealing shaft (3); a reinforcing rib plate (25) is provided on the upper edge of the support mounting plate (6), one side of the reinforcing rib plate (25) is fixed to the horizontal sealing bracket (1), and the other side of the reinforcing rib plate (25) is fixed to the support mounting plate (6).

8. A novel high-speed end-sealing intermittent cutting device, comprising a transverse sealing bracket (1), an active transverse sealing shaft (2), and a driven transverse sealing shaft (3), wherein the active transverse sealing shaft (2) and the driven transverse sealing shaft (3) are driven by meshing transmission through an active gear (4) and a driven gear (5); characterized in that: A support mounting plate (6) is mounted on a horizontal sealing bracket (1) at one end of the driven horizontal sealing shaft (3). An eccentric shaft bearing seat (8) is provided on the support mounting plate (6). An eccentric shaft (7) is mounted inside the eccentric shaft bearing seat (8). A needle roller bearing (9) is provided at the end of the eccentric shaft (7) near the driven horizontal sealing shaft (3). A slot block (11) is fixedly mounted at the end of the driven horizontal sealing shaft (3). The needle roller bearing (9) is fitted with a slot (10) on the slot block (11). A driven sprocket is mounted at the end of the eccentric shaft (7) away from the driven horizontal sealing shaft (3). A servo motor assembly (14) is mounted on the support mounting plate (6). A drive sprocket is mounted on the output shaft of the servo motor assembly (14). The drive sprocket and the driven sprocket are driven by a chain.

9. A new type of high-speed end-seal intermittent cutting device, comprising a transverse sealing support (1), a driving transverse sealing shaft (2) and a driven transverse sealing shaft (3), the driving transverse sealing shaft (2) and the driven transverse sealing shaft (3) being in meshing transmission through a driving gear (4) and a driven gear (5); characterized in that: A support mounting plate (6) is mounted on a horizontal sealing bracket (1) at one end of the driven horizontal sealing shaft (3). An eccentric shaft bearing seat (8) is provided on the support mounting plate (6). An eccentric shaft (7) is mounted inside the eccentric shaft bearing seat (8). A needle roller bearing (9) is provided at the end of the eccentric shaft (7) near the driven horizontal sealing shaft (3). A slot block (11) is fixedly mounted at the end of the driven horizontal sealing shaft (3). The needle roller bearing (9) is fitted with a slot (10) on the slot block (11). The end of the eccentric shaft (7) away from the driven horizontal sealing shaft (3) is connected to the output shaft of the servo motor assembly (14) through a coupling.

10. The novel high speed end seal intermittent cut-off device of claim 9, wherein: The servo motor assembly (14) includes a servo motor (26) and a reducer (27), wherein the reducer (27) is a rotary reducer.

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