A winding device for inner liner paper production

Abstract

The application relates to the technical field of inner lining paper processing equipment, in particular to a winding device for inner lining paper production, which comprises a side connecting frame, a winding roller is rotationally connected to the inner end face of one side of the side connecting frame, a shaft rod is fixedly connected to one side of the middle part of the winding roller, an arc-shaped pressure relief shaft sleeve is arranged on the inner arc surface of the winding roller, an air cavity is arranged on the inner arc surface of the arc-shaped pressure relief shaft sleeve, and a shaft moving block is slidably connected to the outer arc surface of the upper end of the shaft rod. Through the stress absorption structure of the arc-shaped pressure relief shaft sleeve and the bow-shaped elastic frame, the pressure transmission of the air cavity is utilized to make the top of the bow-shaped elastic frame sink and the bottom of the bow-shaped elastic frame expand outward to adaptively deform. The structure can actively absorb the extrusion stress of the outer layer on the inner layer of the winding material, reversely support the arc-shaped pressure relief plate through the bow-shaped elastic frame, disperse the stress to the elastic roller surface, effectively relieve the creep deformation of the inner layer of the winding material, avoid the problem that the tightness of the inner layer of the winding material is inconsistent with the tightness of the outer layer of the winding material, and reduce the quality defects of the exposed edge warping in the subsequent slitting process.

Description

Technical Field

[0001] This invention relates to the field of equipment technology for inner lining paper processing, and more particularly to a winding device for inner lining paper production. Background Technology

[0002] Inner liner paper (such as aluminum foil liner paper for cigarettes) is soft and easily wrinkled, presenting multiple technical challenges during the production and winding process. First, dust and debris easily adhere to the surface, causing the roll to bulge and break after winding, affecting subsequent use. Second, traditional leveling mechanisms are mostly unidirectional or fixed-spaced designs, which cannot adapt to the leveling requirements of inner liner paper of different thicknesses, and the leveling pressure cannot be dynamically adjusted with the winding progress. Third, deviation is prone to occur during winding, and existing deviation correction devices are slow to respond and difficult to quickly correct the deviated sections of the roll. Fourth, when the diameter of the winding roller increases, the tension on the inner liner paper is prone to abnormal fluctuations, leading to stretching deformation or loosening and wrinkling, and the various mechanisms lack coordinated control.

[0003] Inner liner paper is a key material in tobacco, food packaging and other fields. The final winding stage of its production process is the core process that determines the quality of finished products, production efficiency and equipment adaptability. Although traditional and existing winding devices can complete the basic winding function, they are limited by material characteristics, structural design and control logic. They generally have technical bottlenecks in tension control, roll shape regularity, surface protection, adaptability and degree of automation, which have become the main constraints on industry upgrading.

[0004] A Chinese invention patent with publication number CN119858837A discloses a liner paper winding device for a filament laying machine, comprising: a drive assembly, a guide assembly, a bearing assembly, and a locking assembly. The drive assembly includes a drive component and a rotating shaft. One end of the liner paper is attached to the surface of the liner paper roll. The locking assembly is installed at the end of the rotating shaft to clamp the liner paper roll. Then, the drive component is controlled to drive the liner paper roll to rotate to wind up the liner paper. After winding, the locking assembly is removed from the rotating shaft, and the liner paper roll is pulled out from the rotating shaft. Since the surface of the liner paper roll has axially extending grooves, the liner paper roll can be compressed by squeezing the liner paper wrapped around the outside of the liner paper roll, so that the outer wall of the liner paper roll is squeezed into the grooves. The outer diameter of the liner paper roll becomes smaller under compression, so that the liner paper roll can be taken out from the wound liner paper. Disassembly is very simple and labor-saving, thereby improving the efficiency of liner paper recycling and avoiding damage to the liner paper. Although the aforementioned device improves paper recycling efficiency and avoids paper damage during disassembly by creating axially extending grooves on the surface of the paper roll and compressing the outer diameter of the paper roll after winding, it only focuses on maintaining the tension of the surface paper during winding and ignores the stress accumulation effect inside the roll. Under the winding pressure, the inner roll is continuously squeezed by the outer roll. Prolonged exposure to high pressure will cause creep deformation, resulting in inconsistent tightness between the inside and outside of the finished roll. This internal and external stress difference will be concentrated and released in the subsequent slitting process, causing quality problems such as edge bursting or warping of the roll and reducing the finished product qualification rate. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a winding device for producing inner lining paper.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The device includes a side frame, with a take-up roller rotatably connected to the inner end face of one side of the side frame. A shaft is fixedly connected to one side of the middle portion of the take-up roller. An arc-shaped pressure relief bushing is fitted onto the inner arc surface of the take-up roller, and the inner arc surface of the arc-shaped pressure relief bushing has an air cavity. A shifting block is slidably connected to the upper end of the outer arc surface of the shaft. The top of the outer arc surface of the shifting block has a raised end, and the shifting block has a slanted concave contact surface near the raised end. An arc-shaped spring frame abuts against the inner arc surface of the arc-shaped pressure relief bushing. The lower surface of the arc-shaped spring frame has an arc-shaped bend, and the end face of the arc-shaped bend fits against the inner arc surface of the arc-shaped pressure relief bushing. A support section is provided at the top of the arc-shaped spring frame, and a hinge section is provided on the end face of the arc-shaped spring frame near the support section. The hinge section is positioned towards the shifting block and abuts against the raised end. The outer wall of the take-up roller has an elastic roller surface. The take-up roller and the arc-shaped spring frame... The pressure relief bushings are sealed together. The bottom of the inner arc surface of the elastic roller surface is provided with an arc-shaped pressure relief plate. The arc-shaped pressure relief plate is arranged in two layers. A support cavity is provided between the two arc-shaped pressure relief plates. The lower end surface of the arc-shaped pressure relief plate is adapted to the outer arc surface of the arc-shaped pressure relief bushing. An air outlet is opened on one side surface of the arc-shaped pressure relief bushing. An air inlet is provided between the two layers of the arc-shaped pressure relief plate. A series groove is opened on the outer arc surface of the arc-shaped pressure relief bushing. A lower bracket is movably connected to the outer arc surface of the shaft. The front end of the lower bracket is movably connected to an upper bracket through a rotating shaft. A pressure roller is movably connected to the connection between the front end of the upper bracket and the lower bracket through a rotating shaft. A crank is fixedly connected to the pressure roller. A pneumatic rod is fixedly connected to the top end of the crank. An air pipe is connected to the tail end of the pneumatic rod. The air pipe is connected to the air outlet on one side of the arc-shaped pressure relief bushing.

[0007] Preferably, the top of the shifting block is fitted to one side of the inner arc surface of the arc-shaped pressure relief bushing, the outer arc surface of the oblique concave contact surface is adapted to the arc surface inside the arc-shaped pressure relief bushing, and the top support section and the bottom arc-shaped bend of the bow-shaped spring frame are both annularly sleeved inside the arc-shaped pressure relief bushing.

[0008] Preferably, the side connecting frame has an outwardly protruding shaft on the side near the take-up roller, and the front end surface of the side connecting frame has a shaft edge.

[0009] Preferably, the tail end of the lower bracket is hinged to the tail end of the upper bracket, the upper surface of the upper bracket has a through hole, a pin is connected through the through hole of the upper bracket, the bottom end of the pin is connected to a bottom washer, a spring is provided between the pin and the bottom washer, and the bottom surface of the bottom washer abuts against the surface of the lower bracket.

[0010] Preferably, the pressure roller is placed in front of the take-up roller, a tension spring is connected to the pressure roller near the lower bracket, the end of the tension spring away from the pressure roller is connected to the external convex shaft, and a central hole is opened in the middle of one side surface of the crank.

[0011] Preferably, the inner arc surface of the shaft edge is connected to a self-locking assembly, the self-locking assembly includes a ratchet tooth disposed in the inner arc surface of the shaft edge, a connecting rod is connected through the inner arc surface of the central hole, a pawl is fixedly installed on the connecting rod, and the pawl corresponds to the crank.

[0012] Preferably, one end of the connecting rod is movably connected to the side connecting frame, and the end of the pneumatic rod away from the crank is connected to the external convex shaft and is located on one side of the tension spring.

[0013] Preferably, there are two clamping rollers, which are evenly distributed on both sides of the front end of the winding roller. Gear A is fixedly installed on the side of the connecting rod near the pawl, and gear B is fixedly installed at the bearing on one side of the clamping roller.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the coordinated stress absorption structure of the arc-shaped pressure relief bushing and the bow-shaped spring frame, the pressure transmission of the air cavity is utilized to achieve adaptive deformation of the top sinking and the bottom expansion of the bow-shaped spring frame. This structure can actively absorb the outer extrusion stress borne by the inner layer of the roll material. At the same time, through the reverse support of the arc-shaped pressure relief plate by the bow-shaped spring frame, the stress is dispersed to the elastic roller surface, effectively alleviating the creep deformation of the inner layer of the roll material, avoiding the problem of inconsistent tightness between the inner and outer layers of the roll material, and reducing the quality defects of edge warping in the subsequent slitting process.

[0015] 2. Based on the linkage control of air cavity pressure and pneumatic rod, the clamping force of the clamping roller can be automatically adjusted as the roll diameter increases. During the winding process, the pressurized gas in the air cavity drives the pneumatic rod to drive the crank to rotate, causing the clamping roller to fit against the winding roller. With the double buffer of tension spring and bracket spring, the clamping force is always matched with the thickness of the roll material. At the same time, the symmetrical distribution design of the double clamping rollers can press the two sides of the roll material simultaneously, avoiding problems such as misalignment or bulging.

[0016] 3. Through the flexible contact structure between the elastic roller surface and the double-layer arc-shaped pressure relief plate, combined with the adaptive buffer pressure of the pressure roller, the problem of indentation and scratches caused by hard contact in traditional winding devices is avoided. At the same time, the controllable slight deformation of the arc-shaped pressure relief bushing can effectively avoid trapezoidal superposition at the edge of the winding roller, prevent the interlayer separation of the inner liner paper composite layer or the breakage of the aluminum foil, ensure the flatness of the finished product surface and the integrity of the composite layer, and meet the usage requirements of tobacco and food packaging and other fields.

[0017] 4. The impact force of the cutting tool and the stress release of the inner layer of the coil will generate a reverse reaction force, which attempts to drive the pressure roller to rotate in the opposite direction, thereby pulling the edge of the coil and causing edge bursting or interlayer separation. At this time, the reverse rotation of the pressure roller is transmitted to the connecting rod through gear B and gear A, which drives the connecting rod to rotate in the opposite direction. The vertical tooth surfaces of the pawl and the ratchet teeth are rigidly engaged instantly, locking the rotational freedom of the connecting rod, and locking the pressure roller through the gear set. This locking effect can counteract the reverse reaction force and prevent the pressure roller from rebounding and pulling on the cutting edge.

[0018] 5. The shaft drives the connecting rod to rotate via a belt assembly. Gear A and gear B mesh to drive the pressure roller and take-up roller to rotate synchronously in the same direction. At this time, the rotation direction of the connecting rod is consistent with the one-way meshing direction of the ratchet. The pawl slides smoothly along the inclined surface of the ratchet without any locking interference. This ensures that the pressure roller can adaptively adjust its speed and pressure position as the roll diameter increases, avoiding relative sliding between the pressure roller and the inner liner paper. This effectively prevents surface defects such as scratches on the aluminum foil composite layer or fuzzing of the paper base layer, ensuring the surface flatness of the finished roll material. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a winding device for producing inner liner paper according to the present invention. Figure 2 This is a partial cross-sectional internal schematic diagram of the winding roller of a winding device for producing inner liner paper according to the present invention. Figure 3 This is a side view schematic diagram of the pressing and transmission structure of a winding device for producing inner liner paper according to the present invention; Figure 4 This is a schematic diagram of the bow-shaped spring frame and the shifting block of a winding device for producing inner liner paper according to the present invention; Figure 5 This is an overall side view of a winding device for producing inner liner paper according to the present invention. Figure 6 This is a structural diagram of the arc-shaped bend and the shifting block of a winding device for producing inner liner paper, as proposed in this invention. Figure 7 This is a partial schematic diagram of the bracket structure of a winding device for producing inner liner paper according to the present invention; Figure 8 This is a schematic diagram of the connection structure between the lower support and the upper support of a winding device for producing inner liner paper according to the present invention. Figure 9 This is a motion trend diagram of the pawl connecting gear in a winding device for producing inner liner paper according to the present invention. Figure 10 This is a schematic diagram of the gear disassembly structure of a winding device for producing inner liner paper according to the present invention.

[0020] In the diagram: 1. Side connecting frame; 2. Take-up roller; 211. Elastic roller surface; 22. Arc-shaped pressure relief plate; 23. Top support cavity; 3. Shaft; 31. Outwardly protruding shaft; 32. Shaft edge; 4. Arc-shaped pressure relief bushing; 41. Air cavity; 6. Shaft shifting block; 61. Upward-curving head; 62. Oblique concave joint surface; 7. Bow-shaped spring frame; 71. Arc-shaped bent edge; 72. Support section; 73. Hinge section; 8. Series groove; 9. Lower bracket; 10. Upper bracket; 11. Pin; 12. Sleeve bottom gasket; 13. Spring; 14. Pressure roller; 15. Tension spring; 16. Crank; 161. Center hole; 17. Racket tooth; 18. Connecting rod; 19. Pawl; 20. Pneumatic rod; 21. Air pipe. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0023] Reference Figure 2 , Figure 4 and Figure 5 A winding device for producing inner liner paper includes a side frame 1. A winding roller 2 is rotatably connected to the inner end face of one side of the side frame 1. A shaft 3 is fixedly connected to one side of the middle of the winding roller 2. An arc-shaped pressure relief bushing 4 is sleeved on the inner arc surface of the winding roller 2. An air cavity 41 is provided on the inner arc surface of the arc-shaped pressure relief bushing 4. A shaft shifting block 6 is slidably connected to the upper end of the outer arc surface of the shaft 3. A lifting head 61 is provided at the top of the outer arc surface of the shaft shifting block 6. The shaft shifting block 6 is close to the lifting head. A concave contact surface 62 is provided at position 61. The inner arc surface of the arc-shaped pressure relief bushing 4 abuts against the bow-shaped spring frame 7. The lower surface of the bow-shaped spring frame 7 is provided with an arc-shaped bend 71. The end face of the arc-shaped bend 71 fits against the inner arc surface of the arc-shaped pressure relief bushing 4. The top of the bow-shaped spring frame 7 is provided with a support section 72. The end face of the bow-shaped spring frame 7 near the support section 72 is provided with a hinge section 73. The hinge section 73 is set towards the direction of the shifting shaft block 6 and abuts against the upturned head 61.

[0024] In embodiments applying the above technical solution, gas at a preset pressure is simultaneously introduced into the air cavity 41 opened in the arc-shaped pressure relief sleeve 4 and the support cavity 23 between the bottom of the inner arc surface of the elastic roller surface 211 of the winding roller 2 and the double-layer arc-shaped pressure relief plate 22 inside the winding roller 2 supported by the side connecting frame 1. This causes the air cavity 41 and the support cavity 23 to expand synchronously. The expansion of the support cavity 23 pushes the double-layer arc-shaped pressure relief plate 22 outward to push the elastic roller surface 211, so that the elastic roller surface 211 of the winding roller 2 maintains a uniform initial pressure. The initial tension and the expansion of the air cavity 41 cause the arc-shaped pressure relief bushing 4 to fit tightly against the inner wall of the take-up roller 2, ensuring that the arc-shaped pressure relief bushing 4 fits against the outer arc surface of the arc-shaped pressure relief plate 22. At the same time, the sealing connection between the arc-shaped pressure relief bushing 4 and the take-up roller 2 prevents gas leakage and ensures the stability of the pre-tightened state. In addition, the air inlet between the double-layer structure of the arc-shaped pressure relief plate 22 and the series groove 8 on the outer arc surface of the arc-shaped pressure relief bushing 4 are interconnected to form a complete gas flow channel, providing a path for dynamic pressure adjustment during the winding process.

[0025] according to Figure 3 and Figure 7 The side connecting frame 1 has an outwardly protruding shaft 31 near the take-up roller 2. The front end surface of the side connecting frame 1 has a shaft edge 32. The outer arc surface of the shaft 3 is movably connected to the lower support 9. The front end of the lower support 9 is movably connected to the upper support 10 via a rotating shaft. The tail end of the lower support 9 is hinged to the tail end of the upper support 10. The upper surface of the upper support 10 has a through hole. A pin 11 is passed through the through hole of the upper support 10. The bottom end of the pin 11 is connected to a bottom washer 12. A spring 13 is provided between the pin 11 and the bottom washer 12. The bottom surface of the bottom washer 12 abuts against the surface of the lower support 9. A pressure roller 14 is movably connected to the connection between the front end of the upper support 10 and the lower support 9 via a rotating shaft. A tension spring 15 is connected to the shaft 3 on one side of the pressure roller 14 near the lower bracket 9. A crank 16 is fixedly connected to the shaft 3 of the pressure roller 14. The pressure roller 14 is placed in front of the take-up roller 2. The end of the tension spring 15 away from the pressure roller 14 is connected to the external convex shaft 31. A center hole 161 is opened in the middle of one side surface of the crank 16. The pressure roller 14 is movably connected to the front end of the upper bracket 10 and the lower bracket 9 through a rotating shaft. A tension spring 15 is connected to the pressure roller 14 near the lower bracket 9. A crank 16 is fixedly connected to the shaft 3 of the pressure roller 14. The pressure roller 14 is placed in front of the take-up roller 2. The end of the tension spring 15 away from the pressure roller 14 is connected to the external convex shaft 31.

[0026] During the winding process, the pressurized gas in the air cavity 41 pushes the pneumatic rod 20 to extend through the air pipe 21. The power transmission and structural linkage process is as follows: The tail end of the pneumatic rod 20 is fixedly connected to the top end of the crank 16. The crank 16 is sleeved on the connecting rod 18 through the central hole 161. One end of the connecting rod 18 is movably hinged to the side connecting frame 1, and the other end is connected to the belt assembly of the shaft 3, forming a lever transmission structure. Therefore, when the pneumatic rod 20 extends forward, it will apply a thrust to the top end of the crank 16, causing the crank 16 to rotate clockwise around the connecting rod 18 as the fixed rotation center point.

[0027] The other end of the crank 16 is fixedly connected to the shaft 3 of the pressure roller 14, and the pressure roller 14 is movably mounted at the connection between the upper bracket 10 and the lower bracket 9 via a rotating shaft, forming a synchronously rotating linkage structure. The lower bracket 9 is movably sleeved on the shaft 3. The upper bracket 10 and the lower bracket 9 are hinged at their tail ends and connected in series at their front ends via a pin 11. A bottom pad 12 is provided at the bottom end of the pin 11 and abuts against the surface of the lower bracket 9. A spring 13 is sleeved on the outside of the pin 11, and its two ends abut against the bottom surface of the upper bracket 10 and the top surface of the bottom pad 12, respectively, forming a self-adaptive buffer bracket structure. The crank 16 rotates smoothly... As the clock hand rotates, it synchronously drives the pressure roller 14 to swing closer to the winding roller 2 until the two pressure rollers 14, which are symmetrically distributed on both sides of the front end of the winding roller 2, are both in contact with the surface of the inner liner paper roll, thus achieving edge pressing on both sides and effectively preventing misalignment. At the same time, one end of the tension spring 15 is connected to the shaft of the pressure roller 14, and the other end is connected to the outer convex shaft 31 of the side connecting frame 1. Its tension and the elasticity of the spring 13 in the bracket structure work together to buffer the pressure fluctuation caused by the change in the thickness of the roll in real time, so that the pressure of the pressure roller 14 remains stable and avoids damaging the surface of the inner liner paper, thus adapting to the winding and pressing requirements of rolls of different thicknesses.

[0028] The preferred technical solution in this embodiment is: Reference Figure 1 , Figure 3 and Figure 7 The top protrusion 61 of the shifting block 6 fits against one side of the inner arc surface of the arc-shaped pressure relief bushing 4, the outer arc surface of the oblique concave contact surface 62 is adapted to the arc surface inside the arc-shaped pressure relief bushing 4, and the top support section 72 and the bottom arc-shaped bend 71 of the bow-shaped cartridge 7 are both ring-fitted into the inside of the arc-shaped pressure relief bushing 4.

[0029] Meanwhile, the arc-shaped pressure relief bushing 4 and the bow-shaped spring frame 7 work together to actively absorb and buffer the deformation of the outer layer stress of the inner layer material. The arc-shaped pressure relief bushing 4 inside the winding roller 2 simultaneously bears the outward expansion force of the pressurized gas in the air cavity 41 and the inward extrusion force generated by the inner layer material being squeezed by the outer layer material. Under the dual forces, the arc-shaped pressure relief bushing 4 will undergo a controllable slight arc deformation in the direction of the shaft 3. The degree of deformation changes dynamically with the winding progress. The greater the pressure on the outer layer of the inner roll material, the greater the inward deformation of the arc-shaped pressure relief bushing 4. At this time, the outer layer extrusion stress accumulated by the inner roll material also increases. During the deformation process of the arc-shaped pressure relief bushing 4, its inner arc surface will fit against the oblique concave contact surface 62 of the shifting shaft block 6 on the shaft rod 3. Since the arc surface of the oblique concave contact surface 62 is adapted to the inner arc surface of the arc-shaped pressure relief bushing 4, the deformation lateral force of the arc-shaped pressure relief bushing 4 will be smoothly transmitted to the shifting shaft block 6, pushing the shifting shaft block 6 to slide smoothly along the axial direction of the shaft rod 3.

[0030] The deformation process of the bow-shaped cartridge 7 perfectly matches the stress change, achieving dynamic adaptive buffering. The bow-shaped cartridge 7 has a symmetrical bow-shaped structure, with a flat support section 72 at the top and an arc-shaped curved edge 71 at the bottom that fully fits the inner arc surface of the arc-shaped pressure relief bushing 4. The entire cartridge is annularly fitted inside the arc-shaped pressure relief bushing 4. Its top support section 72 abuts against the hinge section 73 of the shifting block 6, and its bottom arc-shaped curved edge 71 fully fits the inner arc surface of the arc-shaped pressure relief bushing 4. It maintains a slight preload in the initial state and has good elastic restoring ability. When the shifting block 6 is subjected to the arc-shaped pressure relief bushing... When the deformation force pushes and slides, its hinge section 73 will apply a continuous compressive force to the support section 72 of the bow-shaped spring frame 7, forcing the bow-shaped spring frame 7 to undergo targeted elastic deformation. After being compressed, the support section 72 bends and sinks towards the arc-shaped pressure relief bushing 4, while simultaneously driving the bottom arc-shaped bend 71 to expand outward, forming a deformation state of top sinking and bottom outward expansion. The deformation amplitude is positively correlated with the sliding distance of the shifting block 6, that is, the greater the pressure of the outer layer roll material, the more obvious the deformation of the arc-shaped pressure relief bushing 4, the farther the sliding distance of the shifting block 6, and the greater the deformation amplitude of the bow-shaped spring frame 7.

[0031] The arc-shaped pressure relief bushing 4 and the bow-shaped spring frame 7 form a synergistic stress absorption structure. The bow-shaped spring frame 7 is preferably made of spring steel, which has excellent elastic deformation capacity and fatigue resistance due to its tensile strength, yield strength and elastic modulus.

[0032] Reference Figure 2 , Figure 5 and Figure 6The outer wall of the take-up roller 2 is provided with an elastic roller surface 211. The take-up roller 2 is sealed to the arc-shaped pressure relief bushing 4. The bottom of the inner arc surface of the elastic roller surface 211 is provided with an arc-shaped pressure relief plate 22. The arc-shaped pressure relief plate 22 is arranged in two layers. A support cavity 23 is provided between the two arc-shaped pressure relief plates 22. The lower end face of the arc-shaped pressure relief plate 22 is adapted to the outer arc surface of the arc-shaped pressure relief bushing 4. An air outlet is opened on one side surface of the arc-shaped pressure relief bushing 4. An air inlet is provided between the two layers of the arc-shaped pressure relief plate 22. A series groove 8 is opened on the outer arc surface of the arc-shaped pressure relief bushing 4.

[0033] This deformation process achieves active absorption and transmission of stress on the outer layer of the inner layer of the roll material. The linkage between the arc-shaped pressure relief plate 22 and the arc-shaped pressure relief bushing 4 completes stress buffering. On the one hand, when the arc-shaped bend 71 at the bottom of the bow-shaped spring frame 7 expands outward, it applies a uniform reverse support force to the inner arc surface of the arc-shaped pressure relief bushing 4. This support force dynamically increases with the deformation amplitude of the bow-shaped spring frame 7, offsetting the inward transitional deformation of the arc-shaped pressure relief bushing 4 caused by the outer layer pressure. At the same time, it actively absorbs the outer layer extrusion transmitted from the arc-shaped pressure relief bushing 4. To prevent stress from acting directly on the inner layer of the roll material, the first step of stress buffering is achieved. On the other hand, when the top support section 72 of the bow-shaped spring frame 7 sinks and deforms, it will simultaneously apply a vertically downward reverse support force to the inner side of the arc-shaped pressure relief plate 22, pushing the double-layer arc-shaped pressure relief plate 22 to always adhere to the elastic roller surface 211 of the take-up roller 2, and transferring part of the stress absorbed by the bow-shaped spring frame 7 to the elastic roller surface 211. The stress is further dispersed through the flexible deformation of the elastic roller surface 211, achieving the second step of stress buffering.

[0034] Based on the linkage control of the pressure of the air cavity 41 and the pneumatic rod 20, the clamping force of the clamping roller 14 can be automatically adjusted as the roll diameter increases. At the same time, the dual clamping roller structure improves adaptability and edge pressing effect. The spacing adjustment range of the dual clamping rollers 14 can flexibly adapt to the winding requirements of inner liner paper of different widths. There is no need to replace the clamping roller assembly. The specification can be switched by mechanical adjustment only, which can adapt to the width requirements of inner liner paper in different scenarios such as tobacco packaging and food packaging.

[0035] The center distance between the tension roller 14 and the take-up roller 2 is designed based on the minimum radius of the take-up roller, the radius of the tension roller, and the buffer gap of the maximum thickness of the inner liner paper. This ensures that the tension roller can always maintain a stable fit with the surface of the roll material from the initial stage to the end of the take-up process. This avoids edge pressing failure caused by excessive gaps and prevents surface damage caused by excessive gaps. The center distance adjustment range is adapted to the dynamic changes in the diameter of the take-up roller.

[0036] The rotation direction of the pressure roller 14 is designed to rotate synchronously with the take-up roller 2. The difference between the rotational linear velocity and the surface linear velocity of the take-up roller can effectively prevent relative slippage between the inner liner paper and the pressure roller, and prevent surface scratches, fuzzing and other defects. The surface material of the pressure roller 14 is preferably silicone with Shore hardness, which has good elasticity and wear resistance. It can ensure sufficient edge friction to prevent the roll from deviating, and can also buffer the pressure through the flexible deformation of silicone to avoid damaging the aluminum foil composite layer on the surface of the inner liner paper.

[0037] Throughout the process, the deformation of the bow-shaped spring frame 7 is always synchronized with the changes in the outer layer stress. The arc-shaped pressure relief bushing 4 is responsible for stress transmission and initial pressure relief. The bow-shaped spring frame 7 actively absorbs and buffers the stress. The arc-shaped pressure relief plate 22 disperses and transmits the outer layer extrusion stress borne by the inner layer roll material, effectively alleviating the creep deformation of the inner layer roll material and avoiding uneven tension inside and outside the roll material caused by stress accumulation. This reduces the quality risk of edge bursting and warping during subsequent slitting, while ensuring the regularity of the roll shape during the winding process.

[0038] Reference Figure 3 , Figure 8 and Figure 9 A central hole 161 is provided in the middle of one side surface of the crank 16. One end of the connecting rod 18 is movably connected to the side connecting frame 1. A pneumatic rod 20 is fixedly connected to the top of the crank 16. The end of the pneumatic rod 20 away from the crank 16 is connected to the external convex shaft 31 and placed on one side of the tension spring 15. The tail end of the pneumatic rod 20 is connected to the air pipe 21. The air pipe 21 is connected to the air outlet on one side of the arc-shaped pressure relief bushing 4. A belt assembly is connected in series at one end of the shaft 3 that passes through the side connecting frame 1. The belt assembly is connected to the connecting rod 18 away from the shaft 3. There are two pressure rollers 14, which are evenly distributed on both sides of the front end of the winding roller 2. A gear A is fixedly installed on the side of the connecting rod 18 near the pawl 19. A gear B is fixedly installed at the bearing on one side of the pressure roller 14.

[0039] After the inner liner paper is wound up, the finished roll needs to be slit at the top of the pressure roller 14. When the slitting tool cuts into the edge of the roll, it will generate a radial impact force. At the same time, the stress generated by the long-term pressure on the inner layer of the wound roll will be released in a concentrated manner. The superposition of these two forces will form a reverse reaction force on the pressure roller 14. The direction of this reaction force is opposite to the rotation direction of the pressure roller 14 when it is wound up. The dynamic tendency will drive the pressure roller 14 to rotate in the opposite direction, which will pull the edge of the roll at the slit, causing the paper base layer and aluminum foil composite layer to separate and the edge fibers to tear.

[0040] At this time, the reverse reaction force of the pressure roller 14 will be transmitted to the gear B at its bearing, causing the gear B to rotate in the opposite direction. The teeth of the gear B will then drive the gear A that meshes with it to rotate in the opposite direction synchronously, thereby causing the connecting rod 18 to rotate in the opposite direction to the winding. This reverse rotation will cause the pawl 19 on the connecting rod 18 to instantly engage rigidly with the ratchet 17 on the inner arc surface of the side connecting frame 1 shaft edge 32. The end of the pawl 19 will directly get stuck in the tooth groove of the ratchet 17 and fit tightly with the vertical tooth surface of the ratchet 17, forming an irreversible locking structure, thereby restricting the degree of freedom of the reverse rotation of the connecting rod 18.

[0041] Through the meshing and linkage of gear A and gear B, the locking state of connecting rod 18 is synchronously transmitted to the pressure roller 14, locking its rotational freedom and preventing reverse rotation. This locking effect can directly offset the reverse reaction force during slitting, preventing the pressure roller 14 from being stretched and deformed at the slitting point of the roll material due to the force rebound. At the same time, the locking state of the pressure roller 14 can fix the roll material in the preset position, preventing the roll material from shifting during the slitting process and ensuring the flatness and size of the slitting cut.

[0042] Specific working principle: Inside the take-up roller 2 supported by the side connecting frame 1, gas at a preset pressure is simultaneously introduced into the air cavity 41 opened in the arc-shaped pressure relief bushing 4 and the support cavity 23 between the double-layer arc-shaped pressure relief plates 22 at the bottom of the inner arc surface of the elastic roller surface 211 of the take-up roller 2. This causes the air cavity 41 and the support cavity 23 to expand synchronously. The expansion of the support cavity 23 pushes the double-layer arc-shaped pressure relief plates 22 outward to push the elastic roller surface 211, so that the elastic roller surface 211 of the take-up roller 2 maintains a uniform initial tension. The expansion of the air cavity 41 causes the arc-shaped pressure relief bushing 4 to fit tightly against the inner wall of the take-up roller 2, ensuring that the arc-shaped pressure relief bushing 4 and the outer arc surface of the arc-shaped pressure relief plate 22 are in contact. At the same time, the sealing connection between the arc-shaped pressure relief bushing 4 and the take-up roller 2 prevents gas leakage and ensures the stability of the pre-tightened state.

[0043] In addition, the air inlet between the double-layer structure of the arc-shaped pressure relief plate 22 and the series groove 8 on the outer arc surface of the arc-shaped pressure relief bushing 4 are interconnected to form a complete gas flow channel. At the same time, one end of the shaft 3 is movably connected to the side connecting frame 1, and the other end passes through the middle of the winding roller 2 and is fixedly connected to the winding roller 2. The shaft shifting block 6 slidably connected on the shaft 3 fits against the bow-shaped spring frame 7 on the inner arc surface of the arc-shaped pressure relief bushing 4, and the lower bracket 9 and upper bracket 10 at the front end of the side connecting frame 1 are all in the initial standby state. The pin 11, the bottom gasket 12 and the spring 13 in the through hole of the upper bracket 10 are kept pre-tight to ensure the stability of the bracket structure.

[0044] When the inner liner paper enters the winding process, the power mechanism drives the shaft 3 on the side connecting frame 1 to rotate at a constant speed. The shaft 3 synchronously drives the winding roller 2 to rotate, and the inner liner paper gradually winds onto the elastic roller surface 211 of the winding roller 2. At the same time, the belt group connected in series through one end of the side connecting frame 1 rotates synchronously, providing support for the dynamic adaptation of the self-locking component. During the winding process, as the thickness of the roll material continuously increases, the roll diameter of the winding roller 2 continues to increase. The squeezing pressure of the inner roll material on the outer roll material gradually increases, resulting in creep deformation and stress accumulation. At this time, the inner roll material squeezes the elastic roller surface 211. The force is gradually transmitted to the double-layered arc-shaped pressure relief plate 22, and then from the arc-shaped pressure relief plate 22 to the arc-shaped pressure relief bushing 4, causing the gas in the air cavity 41 inside the arc-shaped pressure relief bushing 4 to be compressed and the pressure to rise synchronously. Since the air outlet on one side of the arc-shaped pressure relief bushing 4 is connected to the pneumatic rod 20 through the air pipe 21, and the other end of the air pipe 21 is connected to the tail end of the pneumatic rod 20, the compressed gas flows along the series groove 8 and the air inlet of the arc-shaped pressure relief plate 22 to the air outlet, and then enters the interior of the pneumatic rod 20 through the air pipe 21, pushing the rod of the pneumatic rod 20 forward, thereby driving the clamping mechanism to complete the linkage.

[0045] The power mechanism drives the shaft 3 to rotate at a constant speed. On the one hand, the shaft 3 drives the take-up roller 2 to rotate synchronously, pulling the inner liner paper to perform the winding operation. On the other hand, the belt group passing through one end of the side connecting frame 1 of the shaft 3 also rotates synchronously. Through the power transmission of the belt pulley, the connecting rod 18 is driven to rotate at a constant speed in the same direction of rotation as the shaft 3.

[0046] A gear A is fixedly installed on the side of the connecting rod 18 near the pawl 19. As the connecting rod 18 rotates, the gear A rotates synchronously. Its teeth mesh with the gear B fixedly installed at the bearing of the pressure roller 14, thereby driving the gear B to rotate, and finally driving the pressure roller 14 to rotate synchronously with the take-up roller 2 in the same direction.

[0047] During this process, the rotation direction of the connecting rod 18 is completely consistent with the one-way meshing direction of the ratchet 17. The end of the pawl 19 will slide smoothly along the inclined tooth profile of the ratchet 17 and will not make rigid contact with the vertical tooth surface of the ratchet 17. Therefore, no locking effect will be generated, ensuring that the pressure roller 14 can adaptively adjust the speed and pressure position according to the winding progress, and always maintain a non-slip contact with the surface of the inner liner paper roll. This not only achieves the pressing of the two sides of the roll to prevent deviation and mis-layering during winding, but also avoids defects such as scratches and fuzzing of the inner liner paper surface or wear of the aluminum foil layer caused by relative sliding.

[0048] The power transmission and linkage process of the pneumatic rod 20 with the clamping mechanism are as follows: The tail end of the pneumatic rod 20 is fixedly connected to the top end of the crank 16. The crank 16 is sleeved on the connecting rod 18 through the central hole 161. One end of the connecting rod 18 is movably hinged to the side connecting frame 1, and the other end is connected to the belt assembly of the shaft 3, forming a stable lever transmission structure. Therefore, when the pneumatic rod 20 extends forward, it will apply a thrust to the top end of the crank 16, causing the crank 16 to rotate clockwise around the connecting rod 18 as the fixed rotation center point. The other end of the crank 16 is fixedly connected to the shaft of the clamping roller 14, and the clamping roller 14 is movably mounted at the connection between the tail ends of the upper bracket 10 and the lower bracket 9 through a rotating shaft, forming a synchronously rotating structure. The lower bracket 9 is movably sleeved on the shaft 3, and the tail ends of the upper bracket 10 and the lower bracket 9 are hinged and connected in series by a pin 11. A bottom pad 12 is provided at the bottom of the pin 11 and abuts against the surface of the lower bracket 9. A spring 13 is sleeved on the outside of the pin 11, and its two ends abut against the bottom surface of the upper bracket 10 and the top surface of the bottom pad 12, respectively, forming an adaptive buffer bracket structure. When the crank 16 rotates clockwise, it will simultaneously drive the pressure roller 14 to swing closer to the winding roller 2 until the two pressure rollers 14 symmetrically distributed on both sides of the front end of the winding roller 2 are both in contact with the surface of the inner liner paper roll, realizing edge pressing on both sides, effectively preventing deviation and misalignment. At the same time, one end of the tension spring 15 is connected to the shaft of the pressure roller 14 and the other end is connected to the outer convex shaft 31 of the side connecting frame 1. Its tension and the elasticity of the spring 13 in the bracket structure work together to buffer the pressure fluctuation caused by the change in the thickness of the roll in real time, so that the pressure of the pressure roller 14 always remains stable, avoiding damage to the surface of the inner liner paper, and adapting to the winding and pressing requirements of rolls of different thicknesses.

[0049] While the clamping mechanism is working, the coordinated action of the arc-shaped pressure relief bushing 4 and the bow-shaped spring frame 7 constitutes an active absorption and buffering structure for the stress of the inner layer of the coil material, simultaneously solving the problem of stress accumulation in the inner layer. Specifically, the arc-shaped pressure relief bushing 4 inside the take-up roller 2 simultaneously bears the outward expansion force of the pressurized gas in the air cavity 41 and the inward extrusion force generated by the inner layer of the coil material being squeezed by the outer layer of the coil material. Under the dual forces, the arc-shaped pressure relief bushing 4 will undergo a controllable slight arc deformation in the direction of the shaft 3, and the degree of deformation varies with the direction of the shaft 3. The winding progress changes dynamically. The deeper the winding goes, the greater the pressure on the outer layer of the material. The greater the inward deformation of the arc-shaped pressure relief bushing 4, the higher the outer layer extrusion stress accumulated in the inner layer of the material. During the deformation of the arc-shaped pressure relief bushing 4, its inner arc surface will precisely fit the oblique concave contact surface 62 of the upper sliding shaft block 6 on the shaft rod 3. Since the arc surface of the oblique concave contact surface 62 is perfectly matched with the inner arc surface of the arc-shaped pressure relief bushing 4, the deformation lateral force of the arc-shaped pressure relief bushing 4 will be smoothly transmitted to the sliding shaft block 6, pushing the sliding shaft block 6 to slide smoothly along the axial direction of the shaft rod 3.

[0050] The deformation process of the bow-shaped cartridge 7 perfectly matches the stress change, achieving dynamic adaptive buffering. The bow-shaped cartridge 7 has a symmetrical bow-shaped structure, with a flat support section 72 at the top and an arc-shaped curved edge 71 at the bottom that is completely fitted with the inner arc surface of the arc-shaped pressure relief bushing 4. The entire cartridge is annularly fitted inside the arc-shaped pressure relief bushing 4. Its top support section 72 is tightly abutted against the hinge section 73 of the shifting block 6, and the bottom arc-shaped curved edge 71 is fully fitted with the inner arc surface of the arc-shaped pressure relief bushing 4. It maintains a slight preload in the initial state. When the shifting block 6 is pushed by the deformation force of the arc-shaped pressure relief bushing 4, it slides... When in motion, its hinge section 73 will apply a continuous compressive force to the support section 72 of the bow-shaped spring frame 7, forcing the bow-shaped spring frame 7 to undergo targeted elastic deformation. Specifically, after being compressed, the support section 72 bends and sinks towards the arc-shaped pressure relief bushing 4, while simultaneously driving the bottom arc-shaped bend 71 to expand outward, forming a deformation state of top sinking and bottom outward expansion. The deformation amplitude is positively correlated with the sliding distance of the shifting block 6, that is, the greater the pressure of the outer layer roll material, the more obvious the deformation of the arc-shaped pressure relief bushing 4, and the farther the sliding distance of the shifting block 6, the greater the deformation amplitude of the bow-shaped spring frame 7.

[0051] This deformation process directly achieves the active absorption and transmission of stress on the outer layer of the inner layer membrane. The linkage between the arc-shaped pressure relief plate 22 and the arc-shaped pressure relief bushing 4 completes dual stress buffering. On the one hand, when the arc-shaped bend 71 at the bottom of the bow-shaped spring frame 7 expands outward, it applies a uniform reverse support force to the inner arc surface of the arc-shaped pressure relief bushing 4. This support force dynamically increases with the deformation amplitude of the bow-shaped spring frame 7, offsetting the inward transitional deformation of the arc-shaped pressure relief bushing 4 caused by the outer layer pressure. At the same time, it actively absorbs the outer layer pressure transmitted from the arc-shaped pressure relief bushing 4. The compression stress is prevented from acting directly on the inner layer of the roll material, thus achieving the first step of stress buffering. On the other hand, when the top support section 72 of the bow-shaped spring frame 7 sinks and deforms, it will simultaneously apply a vertically downward reverse support force to the inner side of the arc-shaped pressure relief plate 22, pushing the double-layer arc-shaped pressure relief plate 22 to always be tightly attached to the elastic roller surface 211 of the take-up roller 2, and transferring part of the stress absorbed by the bow-shaped spring frame 7 to the elastic roller surface 211. The stress is further dispersed through the flexible deformation of the elastic roller surface 211, thus achieving the second step of stress buffering.

[0052] Throughout the process, the deformation of the bow-shaped spring frame 7 is always synchronized with the changes in the outer layer stress. The arc-shaped pressure relief bushing 4 is responsible for stress transmission and initial pressure relief, the bow-shaped spring frame 7 is responsible for active stress absorption and buffering, and the arc-shaped pressure relief plate 22 is responsible for stress dispersion and transmission. This effectively alleviates the creep deformation of the inner layer of the roll material, avoids uneven tension inside and outside the roll material caused by stress accumulation, reduces the quality risk of edge warping during subsequent slitting from the root, and ensures the regularity of the roll shape during the winding process.

[0053] After the inner liner paper is wound up, the finished roll needs to be slit at the top of the pressure roller 14. When the slitting tool cuts into the edge of the roll, it will generate a radial impact force. At the same time, the stress generated by the long-term pressure on the inner layer of the wound roll will be released in a concentrated manner. The superposition of these two forces will form a reverse reaction force on the pressure roller 14. The direction of this reaction force is opposite to the rotation direction of the pressure roller 14 when it is wound up. The dynamic tendency will drive the pressure roller 14 to rotate in the opposite direction, which will pull the edge of the roll at the slit, causing the paper base layer and aluminum foil composite layer to separate and the edge fibers to tear.

[0054] At this time, the reverse reaction force of the pressure roller 14 will be transmitted to the gear B at its bearing, causing the gear B to rotate in the opposite direction. The teeth of the gear B will then drive the gear A that meshes with it to rotate in the opposite direction synchronously, thereby causing the connecting rod 18 to rotate in the opposite direction to the winding. This reverse rotation will cause the pawl 19 on the connecting rod 18 to instantly engage rigidly with the ratchet 17 on the inner arc surface of the side connecting frame 1 shaft edge 32. The end of the pawl 19 will directly get stuck in the tooth groove of the ratchet 17 and fit tightly with the vertical tooth surface of the ratchet 17, forming an irreversible locking structure, thereby restricting the degree of freedom of the reverse rotation of the connecting rod 18.

[0055] Through the meshing and linkage of gear A and gear B, the locking state of connecting rod 18 is synchronously transmitted to the pressure roller 14, locking its rotational freedom and preventing reverse rotation. This locking effect can directly offset the reverse reaction force during slitting, preventing the pressure roller 14 from being stretched and deformed at the slitting point of the roll material due to the force rebound. At the same time, the locking state of the pressure roller 14 can fix the roll material in the preset position, preventing the roll material from shifting during the slitting process and ensuring the flatness and size of the slitting cut.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A winding device for producing inner liner paper, comprising: The side frame (1) is characterized in that a take-up roller (2) is rotatably connected to the inner end face of one side of the side frame (1), a shaft (3) is fixedly connected to one side of the middle part of the take-up roller (2), and an arc-shaped pressure relief bushing (4) is sleeved on the inner arc surface of the take-up roller (2), and an air cavity (41) is provided on the inner arc surface of the arc-shaped pressure relief bushing (4). The upper end of the outer arc surface of the shaft (3) is slidably connected to a shifting block (6), the top of the outer arc surface of the shifting block (6) is provided with a raised head (61), and the shifting block (6) is provided with a slanted concave contact surface (62) near the raised head (61). The inner arc surface of the arc-shaped pressure relief bushing (4) abuts against the bow-shaped spring frame (7). The lower surface of the bow-shaped spring frame (7) is provided with an arc-shaped bend (71). The end face of the arc-shaped bend (71) fits against the inner arc surface of the arc-shaped pressure relief bushing (4). The top of the bow-shaped spring frame (7) is provided with a support section (72). The end face of the bow-shaped spring frame (7) near the support section (72) is provided with a hinge section (73). The hinge section (73) is arranged in the direction of the shifting block (6) and abuts against the upturned head (61). The outer wall of the take-up roller (2) is provided with an elastic roller surface (211). The take-up roller (2) is sealed to the arc-shaped pressure relief bushing (4). The bottom of the inner arc surface of the elastic roller surface (211) is provided with an arc-shaped pressure relief plate (22). The arc-shaped pressure relief plate (22) is arranged in a double layer. A support cavity (23) is provided between the two arc-shaped pressure relief plates (22). The lower end face of the arc-shaped pressure relief plate (22) is adapted to the outer arc surface of the arc-shaped pressure relief bushing (4). An air outlet is opened on one side surface of the arc-shaped pressure relief bushing (4). An air inlet is provided between the two layers of the arc-shaped pressure relief plate (22). A series groove (8) is opened on the outer arc surface of the arc-shaped pressure relief bushing (4). The outer arc surface of the shaft (3) is movably connected to the lower bracket (9). The front end of the lower bracket (9) is movably connected to the upper bracket (10) via a rotating shaft. The connection between the upper bracket (10) and the front end of the lower bracket (9) is movably connected to the pressure roller (14) via a rotating shaft. The shaft of the pressure roller (14) is fixedly connected to the crank (16). The top end of the crank (16) is fixedly connected to the pneumatic rod (20). The tail end of the pneumatic rod (20) is connected to the air pipe (21). The air pipe (21) is connected to the air outlet on one side of the arc-shaped pressure relief bushing (4).

2. The winding device for producing inner lining paper according to claim 1, characterized in that, The top upturned end (61) of the shifting block (6) fits against one side of the inner arc surface of the arc-shaped pressure relief bushing (4). The outer arc surface of the oblique concave contact surface (62) is adapted to the arc surface inside the arc-shaped pressure relief bushing (4). The top support section (72) and the bottom arc-shaped bend (71) of the bow-shaped spring frame (7) are both ring-fitted into the inside of the arc-shaped pressure relief bushing (4).

3. The winding device for producing inner lining paper according to claim 1, characterized in that, The side frame (1) has an outwardly protruding shaft (31) on the side near the take-up roller (2), and the front end surface of the side frame (1) has a shaft edge (32).

4. A winding device for producing inner lining paper according to claim 3, characterized in that, The tail end of the lower bracket (9) is hinged to the tail end of the upper bracket (10). The upper surface of the upper bracket (10) has a through hole. A pin (11) is connected through the through hole of the upper bracket (10). A bottom pad (12) is connected to the bottom end of the pin (11). A spring (13) is provided between the pin (11) and the bottom pad (12). The bottom surface of the bottom pad (12) abuts against the surface of the lower bracket (9).

5. A winding device for producing inner lining paper according to claim 3, characterized in that, The pressure roller (14) is placed in front of the winding roller (2). A tension spring (15) is connected to the pressure roller (14) near the lower bracket (9). The end of the tension spring (15) away from the pressure roller (14) is connected to the external convex shaft (31). A central hole (161) is provided in the middle of one side surface of the crank (16).

6. A winding device for producing inner lining paper according to claim 5, characterized in that, The inner arc surface of the shaft edge (32) is connected to a self-locking assembly, which includes a ratchet (17) disposed in the inner arc surface of the shaft edge (32). A connecting rod (18) is connected through the inner arc surface of the center hole (161). A pawl (19) is fixedly installed on the connecting rod (18), and the pawl (19) corresponds to the crank (16).

7. A winding device for producing inner lining paper according to claim 6, characterized in that, One end of the connecting rod (18) is movably connected to the side connecting frame (1), and the end of the pneumatic rod (20) away from the crank (16) is connected to the external convex shaft (31) and is set on one side of the tension spring (15).

8. A winding device for producing inner lining paper according to claim 7, characterized in that, There are two pressure rollers (14), which are distributed on both sides of the front end of the winding roller (2). Gear A is fixedly installed on the side of the connecting rod (18) near the pawl (19), and gear B is fixedly installed at the bearing on one side of the pressure roller (14).

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