A tobacco loose conditioning machine feed tobacco sheet tumbling restraint correction device and a correction method thereof

Abstract

The application belongs to the technical field of tobacco industry silk-making equipment, and particularly relates to a tobacco loose conditioning machine feeding tobacco sheet tumbling constraint correction device and a correction method thereof, which comprises a belt conveyor, a loose conditioning machine, a constraint assembly and a swing lever assembly, the top of one side of the loose conditioning machine is fixedly connected with a moisture discharge cover, the constraint assembly is fixedly connected on one side of the moisture discharge cover, and the constraint assembly comprises a positioning base. The application can effectively adjust the falling point of the tobacco sheet into the roller by constraining and correcting the movement track of the tobacco sheet falling from the conveying belt machine, can guarantee the conditioning time and loose strength of the tobacco sheet in the roller, has the functions of constraint, correction and self-adaptive adjustment of the material channel spacing, forms a compact structure and an automatic operation system, the swing lever mechanism is elastically rotated downward, the constraint top rod is elastically retracted, impact load is absorbed and relieved, the channel spacing is increased, and the phenomenon of material overhead blocking the channel is effectively eliminated.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing equipment technology, specifically to a tobacco loosening and rehydration machine feeding tobacco sheet tumbling constraint correction device and its correction method. Background Technology

[0002] Tobacco processing equipment is a core component of cigarette production, encompassing multiple key steps from tobacco leaf processing to tobacco shred forming. It mainly includes equipment such as shredders, dryers, and feeders. With the gradual segmentation of the cigarette market and the increasing demands of consumers for product quality, the tobacco processing equipment industry will usher in new development opportunities.

[0003] In the existing tobacco processing technology, after the tobacco bales are unpacked, they are fed into a slicing machine and cut into tobacco blocks of a certain thickness. The blocks fall and are laid flat on the receiving belt conveyor. When the tobacco blocks reach the discharge roller of the conveyor belt, they are split into tobacco flakes of random thickness as the roller rotates. These flakes then fall and lie flat on the inclined slide of the lower vibrating conveyor. The flakes are conveyed by the high-frequency elastic vibration of the trough and slide into the rehumidification cylinder of the loosening and rehumidification machine. In the high-temperature and high-humidity environment, after a certain length of tumbling and loosening and rehumidification, they are transformed into loose tobacco leaves that meet the process requirements. Therefore, the distance between the landing point of the tobacco flakes in the rehumidification cylinder and the discharge end directly affects the loosening and rehumidification effect of the tobacco leaves, and thus affects the moisture control accuracy of the tobacco leaf feeding and storage processes.

[0004] In current production processes, tobacco sheets rotate around the circumference of the belt rollers along the belt conveyor surface. The tobacco sheets, broken into fragments, fall in a rotating posture, tumbling and rotating under rotational inertia. Due to the significant height difference between the belt conveyor and the inlet of the rehumidification drum, and the steep uphill angle of the belt conveyor, coupled with the downward slope of the vibrating conveyor's inclined slide, space is provided for the tumbling during the fall. When the tobacco sheets contact the surface of the inclined slide, a bouncing force is generated, causing the sheets to bounce and tumble downhill into the drum. This results in the tobacco sheets falling beyond their normal sliding depth into the drum, shortening their length within the rehumidification drum, leading to reduced bulk strength and a shorter rehumidification time. This, in turn, affects the loosening and re-permeability of the tobacco leaves, and makes the discharge port prone to forming cake-like tobacco leaves, impacting the quality of the tobacco loosening and rehumidification process. Therefore, this paper proposes a tobacco sheet tumbling constraint and correction device and method to address the problem of tobacco sheets tumbling into the rehumidification drum and affecting the rehumidification quality. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for constraining and correcting the tumbling of tobacco sheets in a tobacco loosening and rehumidifying machine, so as to solve the problem mentioned in the background art that the tumbling of tobacco sheets into the rehumidifying machine drum affects the rehumidification quality.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a tobacco sheet tumbling restraint and correction device for a tobacco loosening and rehumidifying machine, comprising a belt conveyor, a loosening and rehumidifying machine, a restraint assembly, and a swing arm assembly. A dehumidification hood is fixedly connected to the top of one side of the loosening and rehumidifying machine. The restraint assembly is fixedly connected to one side of the dehumidification hood. The restraint assembly includes a positioning base. The swing arm assembly includes a balance tube. One side of the positioning base is fixedly connected to one side of the dehumidification hood. A swing arm base is fixedly connected to the surface of the positioning base. A dust cover is fixedly connected to the inner side of the swing arm base. The inner wall of the dust cover... An assembly shaft is fitted in the middle of the tube. A torsion spring is fitted on the surface of the assembly shaft and inside the dust cover. One end of the balance tube is rotatably connected to the surface of the assembly shaft. A support bolt is threaded in the middle of the balance tube. A limiting block is fitted inside the balance tube. The balance bolt passes through the balance tube and the limiting block. A sliding shaft is fitted at one end of the balance tube. A compression spring is fitted on the surface of the sliding shaft inside the balance tube. An assembly sleeve is threaded at one end of the balance tube. A constraint rod is slidably connected inside the assembly sleeve. The sliding shaft and the constraint rod are coaxially assembled inside the assembly sleeve.

[0007] The present invention further illustrates that the dust cover is fixedly connected to the inner side of the swing arm base by bolts, the assembly shaft is fixedly connected to the swing arm base by bolts, and the balance tube is rotatably connected to the surface of the assembly shaft away from the dust cover.

[0008] The present invention further illustrates that one end of the torsion spring is fixedly connected to one side of the inner wall of the dust cover, the end of the torsion spring away from the dust cover is inserted into the inside of the balance tube, and one end of the sliding shaft is slidably connected to the inside of the limiting block.

[0009] The present invention further illustrates that a placement frame is fixedly connected to one side of the loosening and rehumidifying machine, a shock-absorbing damping rod is fixedly connected to the top of the placement frame, and an inclined slide is fixedly connected to the top of the placement frame and directly below the dehumidification hood via the shock-absorbing damping rod. A vibration motor is fixedly connected to one side of the inclined slide.

[0010] The present invention further illustrates that the belt conveyor is located on the side of the dehumidification hood away from the loosening and rehumidifying machine, the bottom of the belt conveyor is fixedly connected to a support leg, and tobacco blocks and tobacco sheets are placed on the surface of the belt conveyor. The belt conveyor is used to transport tobacco blocks and tobacco sheets.

[0011] The present invention further illustrates that each level of the constraint component and the swing arm component is made of food-grade stainless steel, and the positioning base adopts a stepped structure that matches the appearance structure of the moisture exhaust cover frame.

[0012] The present invention further illustrates that the balance tube, torsion spring and dust cover are fixed in series on the positioning base by an assembly shaft. One end of the balance tube rotates and swings downward around the assembly shaft. The torsion spring is made of 65Mn material.

[0013] The present invention further explains that the rocker arm mechanism is designed such that the downward twist angle is greater as the load is heavier, and the compression spring is made of 65Mn material.

[0014] The present invention further illustrates that the constraint top rod is assembled to the front end of the balance tube using an assembly sliding sleeve, and the front end of the constraint top rod is designed as a bent tube.

[0015] A method for correcting the tumbling constraint of tobacco sheets fed into a tobacco loosening and rehumidifying machine, wherein the steps of the tumbling constraint correction method are as follows: S1: The belt conveyor transports smoke blocks that rotate around the belt roller and crack into smoke sheets of different thicknesses. As the smoke sheets fall forward and downward in a rotating posture, they touch the constraint top rod at the front end of the swing arm assembly. S2: When the constraint rod is impacted by the rotating smoke sheet, it retracts inward, pushing the sliding axis to slide inward and compress the compression spring. The compression spring generates elastic force, which buffers and dissipates the impact force of the rotating smoke sheet. S3: While the constraint top rod is impacted by the rotating smoke sheet, the balance tube of the linkage swing rod mechanism is impacted by the downward gravity of the smoke sheet. The balance tube rotates and swings downward around the mounting axis of the swing rod base, and the transmission torsion spring twists. The torque generated by the torsion spring torsion buffers and dissipates the impact gravity, and the constraint smoke sheet stops rotating downward. S4: The constrained tobacco ends its downward rotation, the impact force disappears, the constraint mechanism spring rebounds, the sliding shaft slides outward, pushing the constraint top rod to pop out and generate a reaction force, pushing the tobacco to rotate upward in the opposite direction. At the same time, the torsion spring torque is released, the balance tube rebounds upward and generates a reaction force. The resultant force of the reaction force of the constraint mechanism and the torsion spring springs out upward and generates a reaction force, pushing the tobacco to rotate upward in the opposite direction. S5: The tobacco sheet reverses and rotates upwards, then falls as it changes to a rotating and swinging posture. After falling onto the inclined slide of the vibrating conveyor, it tilts to the side on the surface of the inclined slide under the action of rotational inertia.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: the present invention, (1) By constraining and correcting the movement trajectory of the tobacco sheets during the falling process from the conveyor belt, the landing point of the tobacco sheets entering the drum is effectively adjusted, ensuring the rehydration time and loosening strength of the tobacco sheets in the drum. It has functions such as constraining, correcting and adaptively adjusting the material channel spacing, forming a compact and automatically operating system. The swing arm mechanism swings down and rotates elastically, and the constraint top rod retracts elastically, which alleviates the impact load while increasing the channel spacing, effectively eliminating the phenomenon of material blocking the channel.

[0017] (2) By using the compression spring to absorb the kinetic energy, the swing arm mechanism to absorb the downward gravity impact, and the torsion spring to generate the kinetic energy, the tobacco sheet is constrained to stop rotating downwards. At the same time, the kinetic energy stored in the two mechanisms is released, constraining the top rod to rebound and the balance tube to rebound upwards to generate a reaction force, changing the rotating and swinging posture of the tobacco sheet during the falling process, correcting the tobacco sheet fed into the loosening and rehydration machine from a rotating and tumbling posture to a flat posture and sliding in, effectively stabilizing the feeding tobacco sheet into the roller landing point, ensuring its loosening strength and rehydration time in the loosening and rehydration machine, and improving the quality of the loosening and rehydration process of the tobacco sheet. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a first perspective view of a tobacco sheet tumbling constraint and correction device for a tobacco loosening and rehumidifying machine according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the positioning base connection structure in an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the balance tube in an embodiment of the present invention; Figure 4 This is an exploded view of the constraint component in an embodiment of the present invention; Figure 5 This is an exploded view of the pendulum assembly in an embodiment of the present invention; In the diagram: 1. Belt conveyor; 2. Loosening and rehumidifying machine; 3. Dehumidifying hood; 4. Positioning base; 5. Balance pipe; 6. Swing rod base; 7. Dust cover; 8. Assembly shaft; 9. Torsion spring; 10. Support bolt; 11. Limiting block; 12. Sliding shaft; 13. Compression spring; 14. Assembly sleeve; 15. Constraint top rod; 16. Placement frame; 17. Vibration damping rod; 18. Inclined slide; 19. Vibration motor; 20. Support leg; 21. Smoke block; 22. Smoke sheet. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] refer to Figure 1 - Figure 5This invention provides a device for constraining and correcting the tumbling of tobacco sheets in a tobacco loosening and rehumidifying machine. The device includes a belt conveyor 1, a loosening and rehumidifying machine 2, a constraint assembly, and a swing arm assembly. A dehumidification hood 3 is fixedly connected to the top of one side of the loosening and rehumidifying machine 2. The constraint assembly is fixedly connected to one side of the dehumidification hood 3. The constraint assembly includes a positioning base 4. The swing arm assembly includes a balance tube 5. One side of the positioning base 4 is fixedly connected to one side of the dehumidification hood 3. A swing arm base 6 is fixedly connected to the surface of the positioning base 4. A dust cover 7 is fixedly connected to the inner side of the swing arm base 6. An assembly shaft 8 is sleeved in the middle of the inner wall of the dust cover 7. The surface of the assembly shaft 8... A torsion spring 9 is installed inside the dust cover 7. One end of the balance tube 5 is rotatably connected to the surface of the assembly shaft 8. A support bolt 10 is threadedly connected to the middle of the balance tube 5. A limiting block 11 is installed inside the balance tube 5. The support bolt 10 passes through the balance tube 5 and the limiting block 11. A sliding shaft 12 is installed at one end of the balance tube 5. A compression spring 13 is installed on the surface of the sliding shaft 12 inside the balance tube 5. An assembly sleeve 14 is threadedly connected to one end of the balance tube 5. A constraint rod 15 is slidably connected inside the assembly sleeve 14. The sliding shaft 12 and the constraint rod 15 are coaxially assembled inside the assembly sleeve 14.

[0021] The belt conveyor 1 transports the smoke block 21 to the corner of the belt roller. Under the rotation of the belt roller, the smoke block 21 gradually cracks into smoke flakes 22 of different thicknesses. These smoke flakes 22 detach from the belt conveyor 1 with a certain rotational posture and move forward and downward. The movement trajectory changes from a straight line to a curved motion. As the smoke flakes 22 rotate and fall forward and downward, their movement trajectory is interfered with by the front restraint rod 15 of the swing arm assembly, which restricts the smoke flakes 22 from continuing to rotate and roll forward. Under the reaction force of the restraint mechanism and the swing arm mechanism, the smoke flakes 22 are rotated from counterclockwise... The tobacco sheet 22 is rotated and corrected to a reverse rotational posture. It falls in a clockwise rotation and flattens out on the inclined slide 18 of the vibrating conveyor. Under the high-frequency elastic vibration force of the inclined slide 18, it slides downhill and lies flat into the loosening and rehumidifying machine 2. At the same time, the sliding shaft 12 elastically retracts under the action of the compression spring 13, further absorbing the kinetic energy of the tobacco sheet 22, so that the impact force of the collision is initially buffered, and it is prevented from violently rolling due to excessive inertia. Under the impact of the gravity of the tobacco sheet 22, the balance tube 5 swings downward around the assembly shaft 8, and the torsion spring 9 twists and stores torque energy. This process effectively suppresses the disorderly rotation trend of the tobacco sheet 22. Once the impact force of the smoke sheet 22 is completely dissipated, the compression spring 13 in the constraint mechanism rebounds rapidly, pushing the sliding shaft 12 to slide outward. Simultaneously, the constraint top rod 15 pops out and applies a reaction force to the smoke sheet 22. At this time, the torsion spring 9 releases its stored torque, causing the balance tube 5 to rebound upward. The two work together to form a resultant force, changing the motion posture of the smoke sheet 22. Ultimately, under the action of the resultant force, the smoke sheet 22 changes from a rotating state to a stable swinging state, and naturally tilts to the side on the inclined slide 18 surface of the vibrating conveyor during its descent, thereby achieving effective correction and control of the motion trajectory of the smoke sheet 22. The entire system, through constraint correction of the motion trajectory of the smoke sheet 22 during its descent from the conveyor belt, effectively adjusts the landing point of the smoke sheet 22 entering the drum, ensuring its rehydration time and loosening strength within the drum. It possesses functions such as constraint, correction, and adaptive adjustment of the material channel spacing, forming a compact and automatically operating system. The swing arm mechanism elastically swings downward and rotates, while the constraint top rod 15 elastically retracts, absorbing the impact load while increasing the channel spacing, effectively eliminating the phenomenon of material bridging and blocking the channel.

[0022] Figure 3 and Figure 4 As shown, the dust cover 7 is fixedly connected to the inner side of the swing arm base 6 by bolts, the assembly shaft 8 is fixedly connected to the swing arm base 6 by bolts, and the balance tube 5 is rotatably connected to the surface of the assembly shaft 8 away from the dust cover 7; one end of the torsion spring 9 is fixedly connected to one side of the inner wall of the dust cover 7, and the other end of the torsion spring 9 away from the dust cover 7 is inserted into the inside of the balance tube 5; one end of the sliding shaft 12 is slidably connected to the inside of the limiting block 11.

[0023] In actual operation, the stable connection between the swing arm base 6 and the dust cover 7 ensures the stability of the entire mechanism, while the precise positioning of the assembly shaft 8 provides the basis for the flexible rotation of the balance tube 5. The elastic characteristics of the torsion spring 9 are fully utilized, which can quickly rebound and release the stored energy while absorbing the impact force of the smoke sheet 22, thereby changing the falling posture of the smoke sheet 22. The cooperation between the sliding shaft 12 and the limiting block 11 further enhances the reliability of the system and avoids structural displacement or failure caused by external forces.

[0024] Figure 1 As shown, a placement frame 16 is fixedly connected to one side of the loosening and rehumidifying machine 2, and a shock-absorbing damping rod 17 is fixedly connected to the top of the placement frame 16. An inclined slide 18 is fixedly connected to the top of the placement frame 16 and directly below the dehumidification hood 3 through the shock-absorbing damping rod 17. A vibration motor 19 is fixedly connected to one side of the inclined slide 18. The belt conveyor 1 is located on the side of the dehumidification hood 3 away from the loosening and rehumidifying machine 2. A support leg 20 is fixedly connected to the bottom of the belt conveyor 1. Smoke blocks 21 and smoke sheets 22 are placed on the surface of the belt conveyor 1. The belt conveyor 1 is used to transport smoke blocks 21 and smoke sheets 22.

[0025] The high-frequency vibration force generated by the vibrating motor 19 enables the inclined slide 18 to slide downhill with elasticity, providing a smooth downward path for the tobacco sheets 22. The belt conveyor 1 is located on the side of the dehumidification hood 3 away from the loosening and rehumidifying machine 2. Its bottom is stably supported by support legs 20. The surface of the belt conveyor 1 carries the tobacco blocks 21 and tobacco sheets 22, responsible for conveying them to the designated position, ensuring their stability during transport and preventing displacement or overturning due to external interference. The design of the support legs 20 not only enhances the overall stability of the belt conveyor 1 but also allows for height adjustment according to actual needs to adapt to different production environments. The position of the dehumidification hood 3 is precisely calculated to ensure that the tobacco sheets 22 accurately enter subsequent processing stages after leaving the belt conveyor 1, while effectively preventing smoke or moisture leakage, ensuring a clean and safe working environment. Furthermore, the damping rod 17 further enhances the system's stability by absorbing vibration energy and reducing shaking during equipment operation, thereby extending the equipment's service life. The angle of the inclined carriage 18 is optimized to ensure the smooth descent of the tobacco sheet 22 while avoiding impact or damage caused by excessive angle. The high-frequency vibration of the vibrating motor 19 not only provides uniform sliding force for the tobacco sheet 22 but also assists in adjusting its posture to better meet subsequent process requirements. The design of the entire device fully considers the actual needs of the tobacco processing process. Through the collaborative work of multiple components, precise control of the movement trajectory of the tobacco sheet 22 is achieved. From the moment the tobacco sheet 22 leaves the belt conveyor 1 to its entry into the loosening and rehumidifying machine 2, the components work closely together to ensure that the tobacco sheet 22 enters the drum in the best posture, thereby improving the rehumidification quality and loosening effect. This design not only improves production efficiency but also significantly reduces the equipment failure rate caused by material blockage or improper posture, providing an efficient and reliable solution for the tobacco processing industry.

[0026] like Figure 1 , Figure 4 and Figure 5 As shown, all levels of the constraint assembly and swing arm assembly are made of food-grade stainless steel. The positioning base 4 adopts a stepped structure that matches the appearance of the moisture exhaust cover 3 frame. The balance tube 5, torsion spring 9 and dust cover 7 are connected in series and fixed on the positioning base 4 via the assembly shaft 8. One end of the balance tube 5 rotates and swings downward around the assembly shaft 8. The torsion spring 9 is made of 65Mn material. The swing arm mechanism is designed to twist downward as the load increases. The compression spring 13 is made of 65Mn material. The constraint top rod 15 is assembled to the front end of the balance tube 5 using the assembly sleeve 14. The front end of the constraint top rod 15 is designed as a bent tube.

[0027] All levels of the constraint assembly and swing arm assembly are made of food-grade stainless steel to ensure the durability and hygiene of the equipment in tobacco processing environments. The positioning base 4 adopts a stepped structure that matches the appearance of the moisture exhaust hood 3 frame, ensuring the compactness and stability of the overall structure. The balance tube 5, torsion spring 9, and dust cover 7 are connected in series and fixed to the positioning base 4 via the assembly shaft 8. The balance tube 5 can rotate and swing downwards around the assembly shaft 8. The torsion spring 9 is made of 65Mn material, which has good elasticity and fatigue resistance. The swing arm mechanism is designed to withstand a larger downward torsion angle under heavier loads. The compression spring 13 is also made of 65Mn material to ensure sufficient elasticity and durability. The constraint top rod 15 is assembled to the front end of the balance tube 5 via the assembly sleeve 14. Its front end is designed as a curved tube to facilitate contact with the tobacco sheet 22 and guide its movement trajectory, avoiding damage to the tobacco sheet 22. The introduction of the assembly sleeve 14 not only improves the flexibility of the constraint top rod 15 but also ensures the accuracy of its movement trajectory. This design not only effectively corrects the tumbling posture of the smoke sheet 22, but also avoids equipment damage or damage to the smoke sheet 22 caused by excessive impact. The design of the constraint rod 15 fully considers the physical characteristics of the smoke sheet 22. Its curved front end can provide gentle intervention when contacting the smoke sheet 22, and can work continuously and stably on a high-speed production line, while adapting to smoke sheets 22 of different thicknesses and weights.

[0028] A method for correcting the tumbling constraint of tobacco sheets fed into a tobacco loosening and rehumidifying machine, the steps of which are as follows: S1: The belt conveyor 1 conveys the smoke block 21 to rotate around the belt roller and crack into smoke sheets 22 of different thicknesses. The smoke sheets 22 fall forward and downward in a rotating posture. During the fall, the smoke sheets 22 touch the constraint top rod 15 at the front end of the swing rod assembly. S2: The constraint rod 15 retracts inward due to the impact of the rotating smoke sheet 22, pushing the sliding shaft 12 to slide inward and compress the compression spring 13. The compression spring 13 generates elastic force to buffer and dissipate the impact force of the rotating smoke sheet 22. S3: While the constraint top rod 15 is impacted by the rotating smoke sheet 22, the balance tube 5 of the linkage swing rod mechanism is impacted by the downward gravity of the smoke sheet 22. The balance tube 5 rotates and swings downward around the assembly shaft 8 of the swing rod base, and the transmission torsion spring 9 twists. The torque generated by the torsion spring 9 torsion buffers and dissipates the impact gravity, and the constraint smoke sheet 22 stops rotating downward. S4: The constrained smoke sheet 22 ends its downward rotation, the impact force disappears, the constraint mechanism spring 13 rebounds, the sliding shaft 12 slides outward, pushing the constraint top rod 15 to pop out and generate a reaction force, pushing the smoke sheet 22 to rotate upward in the opposite direction. At the same time, the torque of the torsion spring 9 is released, the balance tube 5 rebounds upward and generates a reaction force. The resultant force of the reaction force of the constraint mechanism and the resultant force of the constraint mechanism push the smoke sheet 22 to rotate upward in the opposite direction. S5: The smoke sheet 22 reverses and rotates upwards, and falls down during the process of changing to a rotating and swinging posture. After falling down onto the inclined slide 18 of the vibrating conveyor, the smoke sheet 22 falls sideways onto the surface of the inclined slide 18 under the action of rotational inertia force.

[0029] In this way, the rotating, tumbling and falling posture of the tobacco sheet 22 is constrained and corrected, ensuring that the tobacco sheet 22 falls flat on the inclined slide 18, slides down the slope under high-frequency elastic vibration, and slides flat into the interior of the loosening and rehumidifying machine 2.

[0030] Working principle: In the actual production process of the existing technology, the tobacco sheet 22 rotates around the circumference of the belt roller along the belt surface. The tobacco sheet 22, which is split from the tobacco block 21, falls in a rotating posture. Under the action of rotational inertia, it falls in a suspended rotating and tumbling manner. Because the height difference between the belt conveyor 1 and the inlet of the re-humidification cylinder is large, and the belt conveyor 1 has a certain steep uphill angle, while the inclined slide 18 of the vibrating conveyor is a downward slope, it provides space for the tobacco sheet 22 to tumble during its fall. When the tobacco sheet 22 touches the surface of the inclined slide 18, a certain bouncing force is generated, which causes the tobacco sheet 22 to enter the cylinder in a bouncing and tumbling manner. In this way, the landing point of the tobacco sheet 22 exceeds the normal sliding depth into the cylinder. The tobacco sheet 22 is shortened in length in the loosening and re-humidification machine 2, resulting in a decrease in loosening strength and a shortening of re-humidification time. This affects the loosening and re-permeability of the tobacco leaves, and the phenomenon of caked tobacco leaves is prone to appear at the discharge port, affecting the quality of the loosening and re-humidification process of the tobacco leaves. During operation, the belt conveyor 1 transports the tobacco block 21 to the corner of the belt roller. Under the rotation of the belt roller, the tobacco block 21 gradually breaks into tobacco flakes 22 of different thicknesses. These tobacco flakes 22 detach from the belt conveyor 1 in a rotating posture and move forward and downward. During this process, the movement trajectory of the tobacco flakes 22 is interfered with by the front restraint rod 15 of the swing arm assembly, which restricts its continued forward rotation and tumbling. At the same time, under the influence of the reaction force of the restraint mechanism and the swing arm mechanism, the tobacco flakes 22 are corrected from a counterclockwise rotation posture to a clockwise rotation posture and fall. After falling onto the inclined slide 18 of the vibrating conveyor, the tobacco flakes 22 flatten and slide down the slope under the action of the high-frequency elastic vibration force of the inclined slide 18, and finally slide flat into the loosening and rehydration machine 2.

[0031] When the tobacco sheet 22 collides with the constraint rod 15, the sliding shaft 12 elastically retracts under the action of the compression spring 13, absorbing part of the kinetic energy of the tobacco sheet 22, thus initially buffering its impact force and preventing violent rolling due to excessive inertia. At the same time, the balance tube 5 swings downward around the assembly shaft 8 under the impact of the tobacco sheet 22's gravity, and the torsion spring 9 twists accordingly and stores torque energy. This process effectively suppresses the disordered rotation tendency of the tobacco sheet 22. After the impact force of the tobacco sheet 22 is completely dissipated, the compression spring 13 in the constraint mechanism rebounds rapidly, pushing the sliding shaft 12 to slide outward. At the same time, the constraint rod 15 pops out and applies a reaction force to the tobacco sheet 22. At this time, the torsion spring 9 releases the stored torque, causing the balance tube 5 to rebound upward. The two work together to form a resultant force, changing the motion posture of the tobacco sheet 22, changing it from a rotating state to a stable swinging state, and naturally tilting it onto the surface of the inclined slide 18 of the vibrating conveyor during the fall, thereby achieving effective correction and control of the motion trajectory of the tobacco sheet 22.

[0032] Overall, this device constrains and corrects the movement trajectory of the tobacco sheets 22 as they fall from the conveyor belt, adjusting the landing point of the tobacco sheets 22 into the drum to ensure their rehydration time and loosening strength within the drum. This design not only achieves functions such as constraining, correcting, and adaptively adjusting the material channel spacing, but also forms a compact and automatically operating system. The swing arm mechanism elastically swings downward and rotates, while the constraint top rod 15 elastically retracts, which not only alleviates and absorbs impact loads but also increases the channel spacing, effectively eliminating the phenomenon of material clogging the channels and ensuring a more efficient and stable tobacco processing process.

[0033] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for constraining and correcting the tumbling of tobacco sheets in a tobacco loosening and rehumidifying machine, comprising a belt conveyor (1), a loosening and rehumidifying machine (2), a constraint assembly, and a swing arm assembly, characterized in that: A dehumidification hood (3) is fixedly connected to the top of one side of the loose rehumidifier (2). The constraint assembly is fixedly connected to one side of the dehumidification hood (3). The constraint assembly includes a positioning base (4). The swing rod assembly includes a balance tube (5). One side of the positioning base (4) is fixedly connected to one side of the dehumidification hood (3). A swing rod base (6) is fixedly connected to the surface of the positioning base (4). A dust cover (7) is fixedly connected to the inner side of the swing rod base (6). An assembly shaft (8) is sleeved in the middle of the inner wall of the dust cover (7). A torsion spring (9) is sleeved on the surface of the assembly shaft (8) and inside the dust cover (7). One end of the balance tube (5) is connected to the assembly shaft (8). The surface of the shaft (8) is rotated, and the middle thread of the balance tube (5) is connected to the support bolt (10). The inside of the balance tube (5) is fitted with a limiting block (11). The balance bolt passes through the balance tube (5) and the limiting block (11). One end of the balance tube (5) is fitted with a sliding shaft (12). The surface of the sliding shaft (12) located inside the balance tube (5) is fitted with a compression spring (13). One end of the balance tube (5) is threaded to an assembly sleeve (14). The inside of the assembly sleeve (14) is slidably connected to a constraint rod (15). The sliding shaft (12) and the constraint rod (15) are coaxially assembled inside the assembly sleeve (14).

2. The tobacco sheet tumbling constraint and correction device for a tobacco loosening and rehumidifying machine according to claim 1, characterized in that: The dust cover (7) is fixedly connected to the inner side of the swing arm base (6) by bolts, the assembly shaft (8) is fixedly connected to the swing arm base (6) by bolts, and the balance tube (5) is rotatably connected to the surface of the assembly shaft (8) away from the dust cover (7).

3. The tobacco sheet tumbling constraint and correction device for a tobacco loosening and rehumidifying machine according to claim 1, characterized in that: One end of the torsion spring (9) is fixedly connected to one side of the inner wall of the dust cover (7), and the end of the torsion spring (9) away from the dust cover (7) is inserted into the inside of the balance tube (5). One end of the sliding shaft (12) is slidably connected to the inside of the limiting block (11).

4. The tobacco sheet tumbling constraint and correction device for a tobacco loosening and rehumidifying machine according to claim 1, characterized in that: A placement frame (16) is fixedly connected to one side of the loosening and rehumidifying machine (2). A damping rod (17) is fixedly connected to the top of the placement frame (16). An inclined slide (18) is fixedly connected to the top of the placement frame (16) and directly below the dehumidification hood (3) via the damping rod (17). A vibration motor (19) is fixedly connected to one side of the inclined slide (18).

5. The tobacco sheet tumbling constraint and correction device for a tobacco loosening and rehumidifying machine according to claim 1, characterized in that: The belt conveyor (1) is located on the side of the dehumidification hood (3) away from the loose rehumidifier (2). The bottom of the belt conveyor (1) is fixedly connected with a support leg (20). The surface of the belt conveyor (1) is covered with smoke blocks (21) and smoke sheets (22). The belt conveyor (1) is used to transport smoke blocks (21) and smoke sheets (22).

6. The tobacco sheet tumbling constraint and correction device for a tobacco loosening and rehumidifying machine according to claim 1, characterized in that: All levels of the constraint components and the swing arm components are made of food-grade stainless steel, and the positioning base (4) adopts a stepped structure that matches the appearance of the moisture exhaust cover (3) frame.

7. The tobacco sheet tumbling constraint and correction device for a tobacco loosening and rehumidifying machine according to claim 1, characterized in that: The balance tube (5), torsion spring (9) and dust cover (7) are connected in series and fixed on the positioning base (4) via the assembly shaft (8). One end of the balance tube (5) rotates and swings downward around the assembly shaft (8). The torsion spring (9) is made of 65Mn material.

8. The tobacco sheet tumbling constraint and correction device for a tobacco loosening and rehumidifying machine according to claim 1, characterized in that: The rocker arm mechanism is designed to twist more when subjected to heavier loads, and the compression spring (13) is made of 65Mn material.

9. The tobacco sheet tumbling constraint and correction device for a tobacco loosening and rehumidifying machine according to claim 1, characterized in that: The constraint rod (15) is assembled to the front end of the balance tube (5) using an assembly sleeve (14), and the front end of the constraint rod (15) is designed as a bent tube.

10. A method for constraining and correcting the tumbling of tobacco sheets in a tobacco loosening and rehumidifying machine as described in any one of claims 1-9, characterized in that: The steps of the roll constraint correction method are as follows: S1: The belt conveyor (1) transports the smoke block (21) around the belt roller and splits it into smoke sheets (22) of different thicknesses. The smoke sheet (22) falls forward and downward in a rotating posture. During this process, the smoke sheet (22) touches the constraint top rod (15) at the front end of the swing rod assembly. S2: The constraint rod (15) retracts inward due to the impact of the rotating smoke sheet (22), pushing the sliding shaft (12) to slide inward and compress the compression spring (13). The compression spring (13) generates elastic force, which buffers and dissipates the impact force of the rotating smoke sheet (22). S3: While the constraint rod (15) is impacted by the rotating smoke sheet (22), the balance tube (5) of the linkage swing rod mechanism is impacted by the downward gravity of the smoke sheet (22). The balance tube (5) rotates and swings downward around the assembly shaft (8) of the swing rod base. The transmission torsion spring (9) twists. The torque generated by the torsion spring (9) buffers and dissipates the impact gravity, and the constraint smoke sheet (22) stops rotating downward. S4: The constrained smoke sheet (22) ends its downward rotation action, the collision impact force disappears, the constraint mechanism spring (13) rebounds, the sliding shaft (12) slides outward, pushes the constraint top rod (15) to pop out and generate a reaction force, pushes the smoke sheet (22) to rotate upward in the opposite direction, and at the same time the torsion spring (9) releases its torque, the balance tube (5) rebounds upward and generates a reaction force, the resultant force of the reaction force of the constraint mechanism pushes the smoke sheet (22) to rotate upward in the opposite direction; S5: The smoke sheet (22) reverses and rotates upward. As the smoke sheet (22) changes to a rotating and swinging posture, it falls down. After falling down onto the inclined slide (18) of the vibrating conveyor, it falls sideways onto the surface of the inclined slide (18) under the action of rotational inertia force.

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