A tobacco pushing mechanism for improving the efficiency of tobacco flow sealing and cutting

Abstract

The utility model discloses a kind of push tobacco mechanism for improving the efficiency of tobacco logistics to seal and cut, belong to carton tobacco stack film sealing packaging technical field;Including straight push plate and the straight push assembly of being set to the rear side of straight push plate, reciprocating movement is driven by straight push assembly straight push plate to constantly push out carton tobacco stack located in the front side of straight push plate;The straight push plate includes sub-push plate, and the straight push assembly includes sub-push assembly, and the straight push plate is formed using multiple sub-push plate arrangement, and sub-push assembly is respectively arranged in the rear side of each sub-push plate, and different number of sub-push plate is pushed out simultaneously to form straight push plate of different height;The utility model can know package tobacco stack height in advance by data, realize the height of push plate self-adapting adjustment when different layer tobacco stack film sealing, realize the pre-pressing of upper hot knife when small cigarette package film coating, reduce the total sealing and cutting height of upper hot knife, effectively improve the efficiency of sealing and cutting.

Description

Technical Field

[0001] This utility model relates to a cigarette pushing mechanism, and more particularly to a cigarette pushing mechanism for improving sealing and cutting efficiency in tobacco logistics, belonging to the field of cigarette packing and film sealing packaging technology. Background Technology

[0002] After the tobacco is processed into the shape commonly used for smoking, the processed cigarettes need to be packaged into small boxes, and a certain number of boxes are then packed into a carton. After the cigarette packs are packaged into cartons, they are transported in two ways. One method is to pack the cartons into cigarette boxes and transport the boxes directly; the other method is to stack the cartons together and wrap them in film to facilitate later transportation, while also providing sealing, moisture protection, and pollution prevention.

[0003] Traditionally, the wrapping of cigarette packs involves a combination of manual and mechanical processes. A stacking mechanism piles several packs of cigarettes, which are then manually transferred to a horizontal wrapping mechanism for horizontal wrapping. This horizontally wrapped cigarettes are then manually transferred to a vertical wrapping mechanism for vertical wrapping. However, manual wrapping of cigarette packs is extremely inefficient, and the wrapping process often results in wrinkles and uneven distribution of the film, leading to significant film waste, increased production costs, increased workload for operators, and wasted human resources. Therefore, fully automated cigarette pack wrapping devices have emerged, which can complete the entire process of stacking, wrapping, and unloading cigarette packs.

[0004] However, in practical use, some problems have been found with existing cigarette pack wrapping and sealing equipment. For example, existing cigarette pack wrapping and sealing equipment typically consists of a film output machine, a cigarette pushing mechanism, a cigarette stack transfer machine, and a wrapping machine. During use, the cigarette packs to be wrapped are stacked on the cigarette stack transfer machine, and then pushed into the wrapping machine by the cigarette pushing mechanism. The moving blade assembly of the wrapping machine moves downwards and cooperates with the fixed blade assembly to seal and cut the outer film of the cigarette pack. Because the pushing mechanism's straight push plate is a single piece (i.e., a single-piece straight push plate), regardless of whether sealing large or small cigarette packs, the moving blade assembly of the wrapping machine (especially the upper hot blade) remains at a high position, and the total sealing and cutting height cannot change; it needs to be much higher than the cigarette pack. Figure 8 As shown, in order to avoid the push plate of the cigarette pushing mechanism and prevent interference with its pushing of the cigarette stacks to be wrapped into the sealing and cutting station of the wrapping machine, the downward stroke of the moving knife assembly (upper hot knife) is longer when sealing cigarette stacks of all sizes, which affects the sealing and cutting efficiency of the cigarette stacks. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a tobacco pushing mechanism for improving the sealing and cutting efficiency of tobacco logistics.

[0006] The technical solution adopted by this utility model is: designing a cigarette pushing mechanism for improving the sealing and cutting efficiency of tobacco logistics, which is installed on a cigarette stack wrapping and sealing equipment to push the cigarette stack. The feature is that it includes a straight push plate and a straight push component set on the rear side of the straight push plate. The straight push component drives the straight push plate to move back and forth to continuously push out the cigarette stack located in front of the straight push plate.

[0007] The push plate includes sub-push plates, and the push assembly includes sub-push assemblies. The push plate is composed of multiple sub-push plates arranged together, with a sub-push assembly installed on the rear side of each sub-push plate. Different numbers of sub-push plates are simultaneously pushed out to form push plates of different heights. This push plate structure, using multiple sub-push plates, allows for flexible adjustment of the number of sub-push plates pushed out according to the height of the tobacco stack. For example, in low stacking, only the bottom sub-push plate is pushed out; in high stacking, multiple sub-push plates are pushed out in tandem to form a complete push surface.

[0008] The above structure allows for adjustable height of the push plate, enabling adaptive adjustment to maintain a similar height when wrapping cigarette packs of different heights or layers. This allows the upper hot knife to descend earlier during the wrapping of small cigarette packs, reducing the total sealing and cutting height of the upper hot knife and effectively improving sealing and cutting efficiency.

[0009] Furthermore, this design also includes an extension push plate. The straight push plate includes a first sub-push plate and a second sub-push plate. The straight push assembly includes a first sub-push assembly and a second sub-push assembly. An extension push plate and at least one second sub-push plate are provided on the front side of the first sub-push plate. The first sub-push assembly and a second sub-push assembly corresponding to the second sub-push plate are provided on the rear side of the first sub-push plate. The telescopic end of the second sub-push assembly passes through the first sub-push plate and is connected to the second sub-push plate. The second sub-push plate can be pushed by the second sub-push assembly to be flush with the extension push plate. In use, based on the height of the stack of cigarettes to be wrapped, a suitable number of second pusher components are activated to push out an appropriate number of second pusher plates. All the pushed-out second pusher plates are flush with the extension pusher plate to form a straight pusher plate. At the same time, the upper hot knife (or moving knife component) of the cigarette stack wrapping and sealing equipment descends to a position slightly higher than the height of the straight pusher plate. Simultaneously, the straight pusher plate is pushed out by the action of the first pusher component until the cigarette stack in front of it is pushed to the sealing and cutting position and pressed down by the cigarette pressing mechanism before retracting. The upper hot knife (or moving knife component) of the cigarette stack wrapping and sealing equipment descends to complete the sealing and cutting.

[0010] Furthermore, the first sub-push assembly is a rack and pinion assembly, and the second sub-push assembly is a telescopic rod assembly. The rack and pinion assembly converts the motor's rotary motion into high-precision linear motion, ensuring minimal pushing position error of the first sub-push plate (main push plate). This characteristic is crucial for the precise positioning of tobacco stacks in tobacco logistics equipment, preventing wrapping deviation or uneven sealing caused by thrust deviation. The telescopic rod assembly uses an independent drive unit, with each second sub-push plate equipped with a separate electric or pneumatic push rod. This distributed design facilitates the dynamic activation of the corresponding number of sub-push plates based on the height of the tobacco stack and supports rapid replacement of individual components during later maintenance, reducing equipment maintenance time.

[0011] Furthermore, the extended push plate adopts a C-shaped plate, with its two ends beveled to form an isosceles trapezoidal structure. The C-shaped plate design of the extended push plate effectively resists deformation during the pushing process, and its structure is simple and easy to set up.

[0012] Furthermore, the two wing ends of the extended push plate each extend inwards to form ear plates, which are fixed to the first sub-push plate with screws. The two wing ends of the extended push plate are also each provided with a C-shaped groove, and its web is covered with circular holes. The screws securing the ear plates to the first sub-push plate achieve a rigid connection, capable of withstanding impact loads during high-frequency pushing. The circular holes and C-shaped groove structure in the web reduce material usage while ensuring the push plate's bending strength, resulting in lightweight logistics equipment. The array of circular holes also disperses airflow disturbances during the pushing process and reduces the contact area with the tobacco stack.

[0013] Furthermore, this design also includes a detection mechanism and a controller. The detection mechanism, the first sub-push assembly, and the second sub-push assembly are electrically connected to the controller. The detection mechanism and the controller are respectively installed on the tobacco stack wrapping and sealing equipment. The detection mechanism is used to detect the size of the tobacco stack to be wrapped and transmits the detection data to the controller. The controller controls the start and stop of the first and second sub-push assemblies. The detection mechanism is a weight sensor or a vision inspection device. The weight sensor or vision inspection device acquires the size or height data of the tobacco stack in real time, and the controller automatically matches the optimal straight push plate height.

[0014] Furthermore, a right-angle plate and a rib are provided on the rear side of the first sub-push plate, and the second sub-push assembly is installed on the right-angle plate. An L-shaped notch is provided at one end of the rack of the first sub-push assembly near the first sub-push plate. A guide strip is provided on the back side of the rack. The guide strip extends to the L-shaped notch to form a C-shaped groove. The rib is inserted into the C-shaped groove and fixed with screws, which can achieve quick installation and fixation.

[0015] Furthermore, this design also includes a support base and a locking block disposed on the support base. The locking block is provided with a locking groove. The support base is fixedly disposed on the tobacco stack wrapping and sealing equipment. The guide strip is locked in the locking groove and slidably connected thereto. The gear of the first sub-push assembly is driven to rotate by a motor. The rotation of the gear causes the rack to slide along the locking groove of the locking block, thereby pushing the first sub-push plate.

[0016] Furthermore, the cigarette stack wrapping and sealing equipment includes a film feeding machine, a cigarette stack transfer machine, and a wrapping machine. The cigarette stack transfer machine is located between the film feeding machine and the wrapping machine. The direct push assembly is located on the film feeding machine, and its direct push plate faces the cigarette stack transfer machine. The wrapping machine includes a frame and an upper film feeding roller group, a lower film feeding roller group, and a sealing and cutting mechanism located on the frame. The upper and lower ends of the film feeding machine respectively release packaging film, which passes through the upper film feeding roller group and the lower film feeding roller group respectively before being sealed by the sealing and cutting mechanism.

[0017] Furthermore, the sealing and cutting mechanism includes a moving blade assembly and a smoke-pressing mechanism disposed on the upper part of the frame, and a fixed blade assembly disposed on the lower part of the machine tool. The moving blade assembly includes a transmission belt assembly and a hot blade disposed on the transmission belt assembly. The hot blade includes a blade groove and blade bodies located on both sides of the blade groove. A heating tube is disposed in the middle of the hot blade. The fixed blade assembly includes a blade holder and a cutting blade disposed in the middle of the blade holder. The cutting blade is controlled to extend and retract by a cylinder.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention employs a multi-piece pusher plate structure, allowing for flexible adjustment of the number of pusher plates based on the height of the cigarette stack. For example, in low stacks, only the bottom pusher plate is pushed out, while in high stacks, multiple pusher plates are pushed out in tandem to form a complete push surface. This makes the height of the pusher plate adjustable, enabling adaptive adjustment to a similar height when wrapping cigarette stacks of different heights or layers. It also allows the upper hot knife to descend earlier during wrapping of small cigarette packs, reducing the total sealing and cutting height of the upper hot knife. When used in conjunction with the sealing and cutting mechanism of the cigarette stack wrapping and sealing equipment, this invention can effectively improve sealing and cutting efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the maximum height of the push plate of this utility model.

[0022] Figure 2This is a schematic diagram of the state of the secondary height straight push plate of this utility model.

[0023] Figure 3 This is a schematic diagram of the lowest height straight push plate of this utility model.

[0024] Figure 4 This is a schematic diagram of the present invention installed on a tobacco stack wrapping and sealing device with the push plate at its maximum height.

[0025] Figure 5 This is a schematic diagram of the next-level height straight push plate installed on the tobacco stack wrapping and sealing equipment.

[0026] Figure 6 This is a schematic diagram of the present invention installed on a tobacco stack wrapping and sealing device with the lowest height straight push plate in the following state.

[0027] Figure 7 for Figure 5 Enlarged view of part A.

[0028] Figure 8 A schematic diagram illustrating the installation and use of an existing smoke-pushing mechanism.

[0029] In the diagram: 1. Extended push plate; 2. First sub-push plate; 3. Second sub-push plate; 4. First sub-push assembly; 5. Second sub-push assembly; 6. Ear plate; 7. Right angle plate; 8. Rib plate; 9. Guide strip; 10. Support base; 11. Clamping block; 12. Film output machine; 13. Transfer tobacco stack machine; 14. Wrapping machine; 15. Frame; 16. Upper film output roller assembly; 17. Lower film output roller assembly; 18. Packaging film; 19. Smoke pressing mechanism; 20. Fixed knife assembly; 21. Transmission belt assembly; 22. Hot knife; 23. Knife groove; 24. Knife body; 25. Heating element; 26. Knife holder; 27. Cutting knife; 28. Tobacco stack. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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, not all, of the embodiments of this utility model. 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.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Example 1

[0033] like Figure 1 As shown, a cigarette pushing mechanism for improving sealing and cutting efficiency in tobacco logistics is primarily installed on cigarette pack wrapping and sealing equipment to push cigarette stacks 28, but can also be used in other similar scenarios. It includes a straight push plate and a straight push assembly located behind the straight push plate. In use, the straight push assembly drives the straight push plate to reciprocate, continuously pushing out the cigarette stacks 28 located in front of the straight push plate. More specifically, the straight push plate includes sub-push plates, and the straight push assembly includes sub-push components. The straight push plate is composed of multiple sub-push plates arranged longitudinally, with a sub-push assembly located behind each sub-push plate. The sub-push assembly can drive the sub-push plate to reciprocate laterally. In use, different numbers of sub-push plates are pushed out simultaneously to form straight push plates of different heights.

[0034] Example 2

[0035] This embodiment proposes a more specific tobacco pushing mechanism based on Embodiment 1. The tobacco pushing mechanism described in this embodiment for improving sealing and cutting efficiency in tobacco logistics further includes an extended push plate 1. The direct push plate specifically includes a first sub-push plate 2 and a second sub-push plate 3. The direct push assembly includes a first sub-push assembly 4 and a second sub-push assembly 5. The extended push plate 1 and two second sub-push plates 3 are arranged on the front side of the first sub-push plate 2. The first sub-push assembly 4 and a second sub-push assembly 5 corresponding one-to-one with the second sub-push plates 3 are arranged on the rear side of the first sub-push plate 2. The telescopic end of the second sub-push assembly 5 passes through the first sub-push plate 2 and connects to the second sub-push plate 3. The second sub-push plate 3 can be pushed by the second sub-push assembly 5 to be flush with the extended push plate 1.

[0036] In the above structure, each sub-push plate can push one or two layers of tobacco strips. For example... Figure 1 , 4As shown, when the stack of tobacco strips 28 to be wrapped has 5-6 layers, the two second sub-push plates 3 are pushed out by the second sub-push assembly 5 to be flush with the extension push plate 1, forming a straight push plate with maximum height. Then, the first sub-push assembly 4 pushes the first sub-push plate 2, thereby driving the straight push plate composed of the two second sub-push plates 3 and the extension push plate 1 forward until the 5-6 layers of tobacco strips 28 on its front side are pushed to the target position. Then, the tobacco pressing assembly moves down to press down the tobacco strip stack 28, and then the tobacco pushing mechanism returns to its original position to wait for the next tobacco pushing task. The upper hot knife 22 (moving knife assembly) moves down to complete the sealing and cutting. Figure 2 , 5 As shown, when the stack of tobacco strips 28 to be wrapped has 3-4 layers, a second sub-push plate 3 adjacent to the extension push plate 1 is pushed out by the second sub-push assembly 5 to be flush with the extension push plate 1, forming a straight push plate of a secondary height. At this time, the upper hot knife 22 and the tobacco pressing assembly of the tobacco stack wrapping and sealing equipment can move down to the upper side of the second sub-push plate 3 adjacent to the extension push plate 1 before or during the tobacco pushing process (achieving the effect of reducing the total sealing and pressing height and improving the sealing and cutting efficiency). Then, the first sub-push assembly 4 pushes the first sub-push plate 2, thereby driving the straight push plate composed of the second sub-push plate 3 adjacent to the extension push plate 1 and the extension push plate 1 to move forward until the 3-4 layers of tobacco strips 28 in front of it are pushed to the target position. Then, the tobacco pressing assembly moves down to press down the tobacco strip stack 28, and then the tobacco pushing mechanism returns to its original position to wait for the next tobacco pushing task. The upper hot knife 22 (moving knife assembly) moves down to complete the sealing and cutting. Figure 3 , 6 As shown, when the stack of tobacco strips 28 to be wrapped is 1-2 layers, both second sub-push plates 3 are pulled back by the second sub-push assembly 5 to fit against the first sub-push plate 2. The extended push plate 1 forms a straight push plate of a lower height. Then the first sub-push assembly 4 pushes the first sub-push plate 2, thereby driving the straight push plate formed by the extended push plate 1 forward until the 1-2 layers of tobacco strip stack 28 on its front side are pushed to the target position. Then the tobacco pressing assembly goes down to press down the tobacco strip stack 28. Then the tobacco pushing mechanism returns to its original position to wait for the next tobacco pushing task. The upper hot knife 22 (moving knife assembly) goes down to complete the sealing and cutting.

[0037] Example 3

[0038] This embodiment is a further optimization and refinement of the smoke-pushing mechanism based on Embodiment 2. In this embodiment, the first sub-push assembly 4 is a gear and rack assembly (the gear structure is not shown in the attached drawings; a conventional gear and rack transmission mechanism can be used), and the second sub-push assembly 5 is a telescopic rod assembly, which can be an electric or pneumatic telescopic rod, such as a cylinder assembly.

[0039] In this embodiment, the extension push plate 1 is a C-shaped plate with beveled ends forming an isosceles trapezoidal structure. A lug plate 6 extends inward from each end of the two wing plates of the extension push plate 1, and is fixed to the first sub-push plate 2 with screws via the lug plates 6. C-shaped grooves are also provided at the ends of the two wing plates of the extension push plate 1, and its web is covered with round holes.

[0040] Example 3

[0041] This embodiment is a further optimization and refinement of the tobacco pushing mechanism based on Embodiment 2. The tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics described in this embodiment also includes a detection mechanism and a controller (not shown in the accompanying drawings). The detection mechanism, the first sub-push assembly 4, and the second sub-push assembly 5 are electrically connected to the controller. The detection mechanism and the controller are respectively installed on a tobacco stack wrapping and sealing device, such as on a tobacco stack transfer machine 13. The detection mechanism is used to detect the size of the tobacco stack 28 to be pushed out and transmit the detection data to the controller. The detection mechanism can be, for example, a weight sensor or a visual inspection device (using conventional existing technology). The controller controls the start and stop of the first sub-push assembly 4 and a certain number of second sub-push assemblies 5, so that they adaptively adjust the number of second sub-push plates 3 (e.g., 0-2 plates) participating in pushing the tobacco stack 28. The controller can use conventional existing technology, such as a PLC controller. Through the setting of the detection mechanism and the controller, the adaptive adjustment of the straight push plate height becomes more automated and intelligent.

[0042] Example 4

[0043] This embodiment is a further optimization and refinement of the tobacco pushing mechanism based on Embodiment 3. The tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics described in this embodiment also includes a support base 10 and a locking block 11 disposed on the support base 10. The locking block 11 has a locking groove. The support base 10 is fixedly disposed on the tobacco stack wrapping and sealing equipment. A right-angle plate 7 and a reinforcing rib 8 are disposed on the rear side of the first sub-push plate 2. The second sub-push assembly 5 is mounted on the right-angle plate 7. An L-shaped notch is provided at one end of the rack of the first sub-push assembly 4 near the first sub-push plate 2. A guide strip 9 is provided on the back side of the rack. The guide strip 9 extends to the L-shaped notch to form a C-shaped groove. The reinforcing rib 8 is locked in the C-shaped groove and fixed with screws. The guide strip 9 is locked in the locking groove and slidably connected thereto.

[0044] Example 5

[0045] This embodiment is a further optimization and refinement of the structure of the tobacco stack wrapping and sealing equipment based on Embodiment 4. In this embodiment, the tobacco stack wrapping and sealing equipment includes a film output machine 12, a tobacco stack transfer machine 13, and a wrapping machine 14. The tobacco stack transfer machine 13 is located between the film output machine 12 and the wrapping machine 14. The direct push assembly is located on the film output machine 12, and its direct push plate faces the tobacco stack transfer machine 13. The tobacco stacks 28 to be wrapped are first piled on the tobacco stack transfer machine 13, and then pushed into the wrapping machine 14 for wrapping by the tobacco pushing mechanism. The wrapping machine 14 includes a frame 15 and an upper film-exiting roller group 16, a lower film-exiting roller group 17, and a sealing and cutting mechanism mounted on the frame 15. In the initial state, the upper and lower ends of the film-exiting machine 12 release packaging film 18, which passes through the upper film-exiting roller group 16 and the lower film-exiting roller group 17 respectively, and is then sealed by the sealing and cutting mechanism. During wrapping, the cigarette stack 28 is pushed into the wrapping machine 14 to complete the wrapping of its front and upper and lower sides. Then, the sealing and cutting mechanism completes the wrapping of its rear side and heat-seals it on the rear side. After heat-sealing, it is cut at the middle of the heat-sealed area, thereby completing the wrapping and cutting of the cigarette stack 28, while keeping the packaging film 18 that comes out after passing through the upper film-exiting roller group 16 and the lower film-exiting roller group 17 still in a connected state.

[0046] The sealing and cutting mechanism includes a moving blade assembly and a smoke-pressing mechanism 19 disposed on the upper part of the frame 15, and a fixed blade assembly 20 disposed on the lower part of the machine tool, such as... Figure 7 As shown, the moving blade assembly includes a drive belt assembly 21 and a hot blade 22 disposed on the drive belt assembly 21. The hot blade 22 includes a blade groove 23 and blade bodies 24 located on both sides of the blade groove 23. A heating element 25 is disposed in the middle of the hot blade 22. The fixed blade assembly 20 includes a blade holder 26 and a cutting blade 27 disposed in the middle of the blade holder 26. The cutting blade 27 is controlled to extend and retract by a cylinder. During heat sealing, the moving blade assembly descends until the hot blade 22 is in contact with the blade holder 26. The heating element 25 heats up instantly to complete the heat sealing of the two layers of packaging film 18 between the moving blade assembly and the fixed blade assembly 20. Then, the cutting blade 27 extends and enters the blade groove 23 to cut the middle of the heat-sealed portion of the packaging film 18.

[0047] In the attached diagram, H1 represents the total sealing and cutting height of the upper hot knife 22 (moving knife assembly), and H2 represents the height that the upper hot knife 22 (moving knife assembly) needs to be higher than the tobacco stack 28.

[0048] Furthermore, in the description of this utility model, unless otherwise stated, the terms "multiple", "multiple roots", and "multiple groups" mean two or more, and the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics, installed on a tobacco stack wrapping and sealing device to push tobacco stacks (28), characterized in that: It includes a push plate and a push assembly located behind the push plate. The push assembly drives the push plate to move back and forth to continuously push out the tobacco stacks located in front of the push plate (28). The push plate includes sub-push plates, the push assembly includes sub-push assemblies, and the push plate is composed of multiple sub-push plates arranged together. Each sub-push plate has a sub-push assembly on its rear side, and different numbers of sub-push plates are pushed out at the same time to form push plates of different heights.

2. The tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics according to claim 1, characterized in that: It also includes an extension push plate (1), the straight push plate includes a first sub-push plate (2) and a second sub-push plate (3), the straight push assembly includes a first sub-push assembly (4) and a second sub-push assembly (5), the first sub-push plate (2) is provided with an extension push plate (1) and at least one second sub-push plate (3) on the front side, the first sub-push plate (2) is provided with a first sub-push assembly (4) and a second sub-push assembly (5) corresponding to the second sub-push plate (3) on the rear side, the second sub-push assembly (5) has its telescopic end passing through the first sub-push plate (2) and connected to the second sub-push plate (3), the second sub-push plate (3) can be pushed by the second sub-push assembly (5) to be flush with the extension push plate (1).

3. The tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics according to claim 2, characterized in that: The first sub-push assembly (4) is a gear and rack assembly, and the second sub-push assembly (5) is a telescopic rod assembly.

4. The tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics according to claim 3, characterized in that: The extended push plate (1) is a C-shaped plate with beveled corners at both ends forming an isosceles trapezoidal structure.

5. The tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics according to claim 4, characterized in that: The two wing ends of the extended push plate (1) extend into ear plates (6), which are fixed to the first sub-push plate (2) by screws. The two wing ends of the extended push plate (1) are also provided with C-shaped grooves, and the web is covered with round holes.

6. The tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics according to claim 2, characterized in that: It also includes a detection mechanism and a controller. The detection mechanism, the first sub-push assembly (4) and the second sub-push assembly (5) are electrically connected to the controller. The detection mechanism and the controller are respectively set on the tobacco stack wrapping and sealing equipment. The detection mechanism is used to detect the size of the tobacco stack (28) to be wrapped and transmit the detection data to the controller. The controller controls the start and stop of the first sub-push assembly (4) and the second sub-push assembly (5). The detection mechanism is a weight sensor or a visual inspection device.

7. The tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics according to claim 3, characterized in that: The first sub-push plate (2) is provided with a right angle plate (7) and a rib plate (8) on its rear side. The second sub-push assembly (5) is installed on the right angle plate (7). The rack of the first sub-push assembly (4) is provided with an L-shaped notch at one end near the first sub-push plate (2). A guide strip (9) is provided on the back side of the rack. The guide strip (9) extends to the L-shaped notch to form a C-shaped groove. The rib plate (8) is inserted into the C-shaped groove and fixed with screws.

8. The tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics according to claim 7, characterized in that: It also includes a support base (10) and a locking block (11) disposed on the support base (10). The locking block (11) is provided with a locking groove. The support base (10) is fixedly disposed on the tobacco stack wrapping and sealing equipment. The guide strip (9) is locked in the locking groove and slidably connected thereto.

9. The tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics according to claim 1, characterized in that: The tobacco stack wrapping and sealing equipment includes a film output machine (12), a tobacco stack transfer machine (13), and a wrapping machine (14). The tobacco stack transfer machine (13) is located between the film output machine (12) and the wrapping machine (14). The direct push assembly is located on the film output machine (12), and the direct push plate on it faces the tobacco stack transfer machine (13). The wrapping machine (14) includes a frame (15) and an upper film output roller group (16), a lower film output roller group (17), and a sealing and cutting mechanism located on the frame (15). The film output machine (12) outputs packaging film (18) from its upper and lower ends, and the film is sealed by the sealing and cutting mechanism after passing through the upper film output roller group (16) and the lower film output roller group (17).

10. The tobacco pushing mechanism for improving sealing and cutting efficiency in tobacco logistics according to claim 9, characterized in that: The sealing and cutting mechanism includes a moving knife assembly and a smoke-pressing mechanism (19) located on the upper part of the frame (15), and a fixed knife assembly (20) located on the lower part of the machine tool. The moving knife assembly includes a transmission belt assembly (21) and a hot knife (22) located on the transmission belt assembly (21). The hot knife (22) includes a knife groove (23) and a knife body (24) located on both sides of the knife groove (23). A heating tube (25) is provided in the middle of the hot knife (22). The fixed knife assembly (20) includes a knife holder (26) and a cutter (27) located in the middle of the knife holder (26). The cutter (27) is controlled to extend and retract by a cylinder.

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