A tire inner liner calendering apparatus and process

Abstract

This invention relates to the field of tire liner processing technology, specifically a tire liner calendering apparatus and process. The apparatus includes a frame with two sets of horizontally arranged drive rollers inside. Each drive roller has an auxiliary roller above it. The frame also includes an adjustment structure for driving the auxiliary rollers up and down to adjust the roller spacing. A horizontally arranged slide rail is fixedly connected to one side of the frame via a crossbar, and two sets of sliders are slidably connected to the lower surface of the slide rail. By leveraging the cutting reaction force to trigger the mechanical linkage between the transmission and drive structures, automatic blade face switching, automatic unloading of worn blades, and automatic loading of new blades are achieved. The entire process requires no manual shutdown, effectively ensuring the continuity of tire liner calendering processing, significantly improving production efficiency, and eliminating the tedious manual blade changing operation, thus reducing labor costs and operational error risks.

Description

Technical Field

[0001] This invention relates to the field of tire liner processing technology, specifically to a tire liner calendering apparatus and process. Background Technology

[0002] In the tire manufacturing process, the tire inner liner is a key protective structure, and its production quality directly affects the tire's air tightness, wear resistance, and driving safety. The inner liner is usually formed by calendering rubber cord layers. During the calendering process, the overflowing edges need to be precisely cut by a slitting device to ensure that the width of the inner liner is consistent and meets the assembly requirements of subsequent tire body bonding, shaping, and other processes. Existing tire inner liner calendering equipment often uses fixed-mount blades in its cutting units. However, due to the presence of hard components such as reinforcing filaments in the inner liner substrate, the blades are subjected to high-temperature friction and mechanical impact over a long period, which can easily lead to blade dulling and accelerated wear. To maintain the cutting effect, existing technologies require manual disassembly and replacement of the blades periodically, as well as manual alignment and positioning. This operation is cumbersome and affects production continuity. The manual switching process requires machine downtime, which not only reduces production efficiency but may also cause fluctuations in cutting accuracy due to blade installation deviations, increasing the risk of product scrap. Although some studies have proposed using laser cutting technology to replace traditional mechanical blades to reduce wear and deformation, laser equipment is expensive, complex to maintain, and not suitable for large-scale industrial continuous production scenarios, making widespread application difficult. Therefore, this paper proposes a tire inner liner calendering device and process that can achieve automatic blade switching, solving the problems of high dependence on manual blade changing, unstable cutting effect, and limited production efficiency in existing technologies. Summary of the Invention

[0003] To address the problems in the prior art, this invention provides a tire inner liner calendering device and process that enables automatic tool switching, solving problems such as high dependence on manual tool changing, unstable cutting effect, and limited production efficiency in the prior art.

[0004] The technical solution adopted by this invention to solve its technical problem is a tire inner liner calendering device, including a frame, two sets of horizontally arranged drive rollers are provided in the frame, and an auxiliary roller is provided above each drive roller. An adjustment structure for driving the auxiliary rollers to move up and down to adjust the roller spacing is configured in the frame. A horizontally arranged slide rail is fixedly connected to one side of the frame by a crossbar. Two sets of sliders are slidably connected to the lower surface of the slide rail. A vertically arranged support plate is fixedly connected to the lower surface of each slider. Two sets of cutting structures are provided below the slide rail. Several sets of vertically arranged cutting blades are clamped in the cutting structures. A drive structure is provided on the side of the two sets of cutting structures that are far apart. The drive structure is used to drive the cutting blades to move. A transmission structure is connected between the drive structure and the support plate. When the cutting structure swings away from the frame due to the cutting reaction force of the material, the transmission structure drives the drive structure to work to drive the cutting blades to move.

[0005] After the cutting blade completes the blade face switching, the new sharp blade face is put into the cutting operation, the cutting resistance is greatly reduced, the cutting structure swings back to the vertical state, and the stable cutting position is restored, which facilitates the continuous and accurate cutting of the rubber substrate, ensures the stability of the cutting effect, avoids the fluctuation of cutting accuracy caused by blade dulling, and reduces the risk of product scrap.

[0006] Specifically, the cutting structure includes a vertically arranged mounting plate. A first clamping plate and a second clamping plate are fixedly connected to one side of the mounting plate. The first clamping plate is located above the second clamping plate. Both the first and second clamping plates have through vertical sliding grooves. The cutting blade slides in conjunction with the sliding grooves, and the cutting surface of the cutting blade faces the frame. Vertical positioning grooves that communicate with the sliding grooves are opened on the outer sides of the first and second clamping plates. The cutting blade has snap-fit ​​holes that are adapted to the driving structure.

[0007] Specifically, the drive structure includes a rotating shaft rotatably mounted on the side of the mounting plate away from the first clamping plate, with a drive gear fixedly connected to the rotating shaft via a one-way bearing; a rotating seat is fixedly connected to the rotating shaft, and several sets of telescopic rods evenly distributed along the circumference are provided on the outer side of the rotating seat; a horizontally positioned positioning cylinder is fixed to the output end of the telescopic rod; a movable pin is connected to the positioning cylinder via a support spring; the movable pin engages with the locking hole of the cutting blade; the end of the movable pin facing the locking hole has a chamfer; and a first spring is fixedly connected between the output end of the telescopic rod and the positioning cylinder.

[0008] Specifically, the transmission structure includes a vertically arranged connecting plate, one end of a rotating shaft being rotatably connected to one side of the connecting plate, and the upper and lower parts of the connecting plate being fixedly connected to the first clamping plate and the second clamping plate via connecting rods; a horizontally arranged rack meshes above the drive gear, one end of the rack being pressed against one side of the support plate, and a horizontally arranged first fixing plate is fixedly connected to one side of the connecting plate, the first fixing plate being located above the rack, a limit groove being formed on the first fixing plate, and a positioning block that mates with the limit groove being fixedly connected to the upper surface of the rack; A second spring is fixedly connected between the first fixed plate and the support plate, and a third spring is fixedly connected between the first fixed plate and the end of the rack.

[0009] Specifically, a second fixing plate is fixedly connected to the upper side of the connecting plate. A horizontally arranged swing rod is provided on the side of the second fixing plate near the support plate. One end of the swing rod is fixedly connected to the support plate, and the other end of the swing rod is hinged to the second fixing plate through a hinge shaft.

[0010] Specifically, a moving groove is provided on the lower surface of the slide rail, and a horizontally set adjusting rod is rotatably connected in the moving groove. The two ends of the adjusting rod are provided with external threads with opposite directions of rotation. The slider slides in cooperation with the moving groove. Each slider is provided with a through threaded hole. The adjusting rod is threaded in cooperation with the threaded hole. One end of the adjusting rod passes through the slide rail and is fixedly connected to an adjusting knob.

[0011] Specifically, the adjustment structure includes an adjustment groove vertically opened on the frame, and adjustment seats rotatably connected to both ends of the auxiliary roller. The adjustment seats and the adjustment groove are vertically slidably connected. A vertically arranged screw is rotatably connected to the upper surface of the adjustment seat. An adjustment hole corresponding to the screw is opened on the upper surface of the frame. The screw passes through the adjustment hole and is threaded into the adjustment hole. A rotating handle is fixedly connected to the upper end of the screw.

[0012] Specifically, a drive motor for driving the drive roller is provided on the outside of the frame; a support base is fixedly connected to the lower surface of the frame, and a control switch for controlling the drive motor is provided on one side of the support base.

[0013] A tire inner liner calendering process, employing the aforementioned tire inner liner calendering apparatus, specifically includes the following steps: S1: According to the preset processing specifications of the tire inner liner, the operating adjustment structure drives the auxiliary roller to move vertically up and down, adjusting the roller spacing between the auxiliary roller and the drive roller to match the calendering thickness requirements of the rubber substrate; at the same time, the two sets of sliders are adjusted to drive the cutting structure to move synchronously, so that the spacing between the two sets of cutting structures matches the preset width of the tire inner liner, completing the specification debugging before equipment processing. S2: The rubber substrate is fed flat between the drive roller and the auxiliary roller, and the drive roller is driven to rotate horizontally. Through the rolling cooperation of the drive roller and the auxiliary roller, the rubber substrate is continuously calendered to form the tire inner liner substrate. S3: The rubber substrate is continuously conveyed under the drive of the drive roller and the auxiliary roller, and at the same time, the scrap material overflowing from both sides of the substrate during the calendering process is cut synchronously using vertical cutting blades. S4: When the cutting blade becomes dull during long-term cutting, the cutting blade is subjected to the cutting reaction force of the material, which pushes the cutting structure to swing away from the frame. The transmission structure drives the drive structure to work, and the drive structure drives the cutting blade to move, realizing the automatic switching of the cutting blade surface. S5: The finished tire inner liner after calendering and online cutting is continuously fed out from the discharge end of the frame by the conveying action of the drive roller and the auxiliary roller, completing the integrated calendering and cutting processing of the tire inner liner.

[0014] The beneficial effects of this invention are: The tire inner liner calendering device and process described in this invention utilizes the cutting reaction force to trigger the mechanical linkage between the transmission structure and the drive structure, thereby achieving automatic blade face switching, automatic unloading of waste blades, and automatic clamping and loading of new blades. The entire process requires no manual shutdown, effectively ensuring the continuity of tire inner liner calendering processing, significantly improving production efficiency, and eliminating the tedious manual blade changing operation, thus reducing labor costs and operational error risks.

[0015] The present invention discloses a tire inner liner calendering device and process, wherein the cutting structure can adaptively swing around the hinge axis, and can automatically adjust the cutting angle according to the thickness of the rubber substrate, thereby increasing the effective cutting contact area with the thick substrate, dispersing the cutting stress, avoiding hard contact impact between the blade edge and the thick substrate, reducing the blade wear rate, extending the blade's single-use time, and improving the surface flatness of the cut thick substrate, effectively reducing the risk of product scrap. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is an isometric view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a side view from another perspective of the present invention; Figure 4 This is a schematic cross-sectional view of the frame structure of the present invention; Figure 5 for Figure 4 Enlarged view of region A; Figure 6 This is a schematic diagram of the slide rail connection structure of the present invention; Figure 7 for Figure 6 Enlarged view of region B; Figure 8 This is a schematic diagram of the connection structure of the connecting plate of the present invention; Figure 9 for Figure 8 Enlarged view of region C; Figure 10 This is a schematic diagram of the mounting plate connection structure of the present invention; Figure 11 This is a schematic diagram of the structure of the first clamping plate and the cutting blade of the present invention; Figure 12 This is a cross-sectional view of the positioning cylinder structure of the present invention; In the diagram: 1. Frame; 2. Drive roller; 3. Auxiliary roller; 4. Crossbar; 5. Slide rail; 6. Slider; 7. Support plate; 8. Cutting blade; 9. Mounting plate; 10. First clamping plate; 11. Second clamping plate; 12. Slide groove; 13. Vertical positioning groove; 14. Snap-fit ​​hole; 15. Rotating shaft; 16. One-way bearing; 17. Drive gear; 18. Rotating seat; 19. Telescopic rod; 20. Support spring; 21. Movable pin; 22. Chamfer; 23. First spring 24. Spring; 25. Connecting plate; 26. Connecting rod; 27. Rack; 28. First fixing plate; 29. ​​Limiting groove; 30. Positioning block; 31. Second spring; 32. Third spring; 33. Second fixing plate; 34. Swing rod; 35. Hinge shaft; 36. Moving groove; 37. Adjusting rod; 38. Adjusting knob; 39. Adjusting groove; 40. Screw; 41. Rotating handle; 42. Drive motor; 43. Support base; 44. Positioning cylinder. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] To achieve automatic tool switching and solve the problems of high reliance on manual tool changing, unstable cutting results, and limited production efficiency in existing technologies, as an embodiment of the present invention, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 As shown, the tire inner liner calendering device of the present invention includes a frame 1, with two sets of horizontally arranged drive rollers 2 inside the frame 1. Each drive roller 2 is equipped with an auxiliary roller 3 above it. The frame 1 is equipped with an adjustment structure for driving the auxiliary rollers 3 to move up and down to adjust the roller spacing. A horizontally arranged slide rail 5 is fixedly connected to one side of the frame 1 via a crossbar 4. Two sets of sliders 6 are slidably connected to the lower surface of the slide rail 5. Each slider 6 is fixedly connected to a vertically arranged support plate 7. Two sets of cutting structures are provided below the slide rail 5. Several sets of vertically arranged cutting blades 8 are clamped in the cutting structures. A driving structure is provided on the side of the two sets of cutting structures that are far apart. The driving structure is used to drive the cutting blades 8 to move. A transmission structure is connected between the driving structure and the support plate 7. When the cutting structure swings away from the frame 1 due to the cutting reaction force of the material, the transmission structure drives the driving structure to work and drive the cutting blades 8 to move.

[0020] When in use, first operate the adjustment structure of the device to adjust the roller gap between the auxiliary roller 3 and the drive roller 2 to adapt to the calendering processing requirements of rubber substrates of different thicknesses; feed the rubber substrate between the drive roller 2 and the auxiliary roller 3, and complete the calendering of the inner liner through the rolling of the roller body. During the calendering process, there will be excess scrap material overflowing from both sides of the substrate. At this time, the vertical cutting blades 8 in the two sets of cutting structures are used to precisely cut the overflowing scrap material vertically to ensure that the width of the tire inner liner is consistent, which meets the subsequent tire body bonding and shaping assembly requirements, replaces manual cutting, and improves cutting accuracy and calendering processing efficiency; As processing continues, the cutting edge of the cutting blade 8 becomes dull. When the dulled blade cuts, the cutting structure is pushed away from the frame 1 by the reaction force of the material cutting. The transmission structure drives the cutting blade 8 to move down, realizing automatic switching of the cutting blade surface. There is no need to manually stop the machine to replace the blade, avoiding the tedious operation of manual blade replacement, ensuring production continuity, and solving the problem of low production efficiency caused by manual blade replacement in traditional equipment. After the cutting blade 8 completes the blade face switching, the new sharp blade face is put into the cutting operation, the cutting resistance is greatly reduced, the cutting structure swings back to the vertical state, and the stable cutting position is restored, which facilitates the continuous and accurate cutting of the rubber substrate, ensures the stability of the cutting effect, avoids the fluctuation of cutting accuracy caused by blade dulling, and reduces the risk of product scrap.

[0021] To facilitate the vertical movement of the driven blade, for example, such as Figure 6 , Figure 8 , Figure 10 , Figure 11 As shown, the present invention also includes a cutting structure comprising a vertically arranged mounting plate 9, with a first clamping plate 10 and a second clamping plate 11 fixedly connected to one side of the mounting plate 9. The first clamping plate 10 is located above the second clamping plate 11. Both the first clamping plate 10 and the second clamping plate 11 have through vertical sliding grooves 12. The cutting blade 8 slides in cooperation with the sliding grooves 12, and the cutting surface of the cutting blade 8 faces the frame 1. The outer sides of the first clamping plate 10 and the second clamping plate 11 have vertical positioning grooves 13 that communicate with the sliding grooves 12. The cutting blade 8 has a snap-fit ​​hole 14 that is adapted to the driving structure.

[0022] In use, several sets of cutting blades 8 are respectively embedded in the vertical sliding grooves 12 of the first clamping plate 10 and the second clamping plate 11, so that the cutting blades 8 are kept vertical and the cutting surface faces the frame 1. The first clamping plate 10 and the second clamping plate 11 form a bidirectional clamping limit on the cutting blades 8, ensuring the structural stability of the cutting blades 8 after installation and preventing the blades from shifting and shaking during cutting. After the blade is installed, the drive structure engages with the snap-fit ​​hole 14 of the cutting blade 8. At the same time, the vertical positioning groove 13 on the outer side of the first clamping plate 10 and the second clamping plate 11 is adapted to the drive structure, providing vertical guidance for the drive structure to move the blade, ensuring that the drive structure always moves the blade in the vertical direction, and avoiding blade deviation and jamming. During the calendering process, the cutting blade 8 cuts the overflowing scrap. When the blade edge becomes dull and the material reaction force pushes the cutting structure to swing, the transmission structure drives the drive structure to work. The drive structure, through the engagement with the locking hole 14, drives the cutting blade 8 to slide downward along the vertical slide groove 12, realizing the switching of the cutting blade surface. After the cutting blade 8 moves down along the slide groove 12 to complete the blade surface switching, the new sharp blade surface is in the cutting position. The limiting of the clamping plate and the guiding of the slide groove 12 keep the new blade surface in a stable vertical cutting state, ensuring the consistency of the cutting effect, without the need for manual intervention to adjust the blade position.

[0023] To achieve pre-loading and automatic replacement of blades, for example, such as Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 12 As shown, the present invention also includes a drive structure comprising a rotating shaft 15 rotatably disposed on the side of the mounting plate 9 away from the first clamping plate 10, a drive gear 17 fixedly connected to the rotating shaft 15 via a one-way bearing 16; a rotating seat 18 fixedly connected to the rotating shaft 15, and a plurality of sets of telescopic rods 19 evenly distributed along the circumference provided on the outer side of the rotating seat 18; a horizontally disposed positioning cylinder 44 fixedly disposed at the output end of the telescopic rod 19; a movable pin 21 connected to the positioning cylinder 44 via a support spring 20; the movable pin 21 engaging with the snap-fit ​​hole 14 of the cutting blade 8; a chamfer 22 provided at the end of the movable pin 21 facing the snap-fit ​​hole 14; and a first spring 23 fixedly connected between the output end of the telescopic rod 19 and the positioning cylinder 44.

[0024] In use, in the initial state of the device, the two sets of cutting blades 8 are respectively installed in the slide grooves 12 of the first clamping plate 10 and the second clamping plate 11. The movable pin 21 in the positioning cylinder 44 in the drive structure smoothly engages with the locking holes 14 of the two sets of cutting blades 8 through its own chamfer 22. During the calendering and cutting operation, the blunting of the cutting blades 8 causes the cutting structure to swing. The transmission structure drives the rotating shaft 15 to rotate. The rotating shaft 15 drives the telescopic rod 19 to make a circular motion through the rotating seat 18. The telescopic rod 19 drives the positioning cylinder 44 and the movable pin 21 to move synchronously. The movable pin 21 drives the cutting blades 8 to move down along the vertical slide groove 12 to switch the blade surface through the locking hole 14. As the rotating shaft 15 continues to rotate, the blade continues to move downward. When the lower cutting blade 8 moves to its limit position, the chamfer 22 of the movable pin 21 contacts the edge of the locking hole 14 of the lower blade and generates pressure, causing the movable pin 21 to disengage from the locking hole 14 of the lower blade. The lower blade falls down automatically. The movable pin 21 is automatically disengaged from the locking hole 14 by the guiding and pressing action of the chamfer 22, thus completing the automatic unloading of the waste blade and avoiding the tedious operation of manually disassembling and removing materials. After the lower blade falls off, the rotating shaft 15 continues to rotate. The telescopic rod 19, relying on its own telescopicity and the elastic support of the first spring 23, ensures that the positioning cylinder 44 always fits against the vertical positioning groove 13 and moves vertically downward. This drives the upper cutting blade 8 to move smoothly down to the cutting position along the vertical positioning groove 13. The elastic cooperation between the telescopic rod 19 and the first spring 23 ensures that the positioning cylinder 44 always moves along the positioning groove, ensuring that the upper blade accurately takes over the cutting operation. There is no need to manually adjust the cutting position, thus maintaining production continuity. After the upper blade enters the cutting station, the new cutting blade 8 can be inserted into the upper part of the sliding groove 12 of the first clamping plate 10. The rotating shaft 15 continues to rotate, driving the telescopic rod 19 and the movable pin 21 to move. When the movable pin 21 rotates with the rotating shaft 15 to the corresponding position of the new blade engagement hole 14, the positioning cylinder 44 moves down along the vertical positioning groove 13. The movable pin 21 smoothly engages with the engagement hole 14 of the new blade again through the chamfer 22 to complete the engagement, realizing the automatic engagement of the new blade with the drive structure, completing the automatic feeding of the new blade, and adapting to the needs of continuous production. After the new blade is engaged, the rotating shaft 15 continues to rotate, which can drive the new blade to move down synchronously with the existing blade. When the existing blade moves to the limit position, the new blade can directly take over the cutting operation, realizing the pre-installation and automatic replacement of the blade, ensuring uninterrupted cutting operation, and greatly improving production efficiency.

[0025] To achieve a smooth transition of the cutting surface, for example, such as Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the present invention also includes a transmission structure comprising a vertically arranged connecting plate 24, one end of a rotating shaft 15 being rotatably connected to one side of the connecting plate 24, and the upper and lower parts of the connecting plate 24 being fixedly connected to the first clamping plate 10 and the second clamping plate 11 via connecting rods 25; a horizontally arranged rack 26 is meshed above the drive gear 17, one end of the rack 26 being pressed against one side of the support plate 7, and a horizontally arranged first fixing plate 27 is fixedly connected to one side of the connecting plate 24, the first fixing plate 27 being located above the rack 26, a limiting groove 28 being formed on the first fixing plate 27, and a positioning block 29 cooperating with the limiting groove 28 being fixedly connected to the upper surface of the rack 26; A second spring 30 is fixedly connected between the first fixing plate 27 and the support plate 7, and a third spring 31 is fixedly connected between the first fixing plate 27 and the end of the rack 26.

[0026] During use, when the cutting blade 8 is blunted and squeezed by the reaction force of the material, it drives the mounting plate 9 and the connecting plate 24 to swing synchronously away from the frame 1. During the swinging process, the connecting plate 24 drives the rack 26 to mesh with the drive gear 17, thereby driving the rotating shaft 15 to rotate and realize the automatic switching of the blade cutting surface. The positioning block 29 on the rack 26 cooperates with the limiting groove 28 to form a horizontal guide and limit the movement of the rack 26, avoiding deviation and jamming when the rack 26 is meshed, ensuring the meshing stability of the rack 26 and the drive gear 17, and realizing a smooth cutting surface. When the cutting blade 8 is dulled and squeezed by the reaction force of the material, it will drive the mounting plate 9 and the connecting plate 24 to swing synchronously away from the frame 1. During the swinging process, the connecting plate 24 drives the rack 26 to mesh with the drive gear 17, which in turn drives the rotating shaft 15 to rotate to realize the automatic switching of the blade cutting surface. The positioning block 29 and the limiting groove 28 cooperate to form a horizontal guide and limit the movement of the rack 26, so as to avoid the rack 26 from deviating or jamming during meshing transmission, and ensure the stability of the meshing between the rack 26 and the drive gear 17, so as to realize the smooth switching of the cutting surface. After the blade completes the cutting surface switching, it regains its sharpness, reducing cutting resistance. The elastic restoring force of the second spring 30 can drive the connecting plate 24, the mounting plate 9, and the cutting structure to swing back to the vertical cutting state, realizing the automatic reset of the cutting structure without manual adjustment, quickly restoring a stable cutting position, and ensuring the consistency of cutting accuracy. The third spring 31 can drive the rack 26 to retract to the initial position after the cutting structure resets, realizing the automatic reset of the rack 26, preparing for the next meshing transmission, and ensuring the continuity of the device's operation during continuous operation. The one-way bearing 16 on the rotating shaft 15 engages with the rack 26 for transmission. The rotating shaft 15 rotates to change the tool only when the cutting structure swings backward and the rack 26 presses against the drive gear 17. When the cutting structure resets, the one-way bearing 16 locks the rotating shaft 15, effectively preventing the blade from moving erroneously due to the reverse rotation of the rotating shaft 15 during the reset process. This ensures the accuracy of the tool changing action, and no manual intervention is required throughout the process. This avoids the time loss of downtime for tool changing, greatly improves production continuity and processing efficiency, and reduces the risk of cutting accuracy deviation caused by manual operation.

[0027] To improve the adaptability and flexibility of the device to different processing conditions, for example, such as Figure 2 , Figure 8 As shown, the present invention also includes a second fixing plate 32 fixedly connected to the upper side of the connecting plate 24. The second fixing plate 32 is provided with a horizontally arranged swing rod 33 on the side near the support plate 7. One end of the swing rod 33 is fixedly connected to the support plate 7, and the other end of the swing rod 33 is hinged to the second fixing plate 32 through a hinge shaft 34.

[0028] When in use, after the cutting blade 8 is blunted and subjected to the reaction force of the material, the cutting structure swings away from the frame 1 with the hinge shaft 34 as the swing center. The hinge shaft 34 provides a rotation positioning center for the swing of the cutting structure, making the meshing transmission of the rack 26 and the drive gear 17 and the rotation of the shaft 15 more precise. For the case where the thickness of the tire inner liner substrate increases during calendering, the thicker substrate will generate greater cutting resistance on the cutting blade 8, pushing the cutting structure to swing further around the hinge axis 34 and maintain an inclined cutting state. This allows the cutting blade 8 to form a suitable inclined cutting angle with the thickened substrate, increasing the effective cutting contact area between the blade and the substrate, dispersing cutting stress, effectively avoiding hard contact impact between the blade edge and the thick substrate, reducing the blade wear rate when cutting thick substrates, improving the cutting smoothness and surface flatness of the thick substrate edge, extending the single-use time of the blade, reducing the frequency of blade face switching, and further improving overall production efficiency. Through the hinged cooperation between the swing rod 33 and the hinge axis 34, the swing of the cutting structure has an adaptive adjustment capability, which can automatically adjust the swing tilt angle according to the actual thickness of the substrate. There is no need to manually disassemble and adjust the installation angle of the cutting structure, adapting to the cutting needs of inner liner substrates of different thicknesses, greatly improving the adaptability and flexibility of the device to different processing conditions. After the substrate thickness returns to normal, the cutting resistance decreases. Under the elastic restoring force of the second spring 30, the cutting structure can swing back to the vertical initial cutting state around the hinge axis 34 without manual calibration. This meets the dual requirements of cutting thick substrates and cutting conventional substrates. No additional angle adjustment control components are needed, which reduces the structural complexity and maintenance cost of the device. At the same time, it realizes the adaptive dynamic adjustment of the cutting posture according to the processing conditions, which improves the automation and intelligent processing level of the device.

[0029] For example, such as Figure 6 As shown, the present invention also includes a sliding groove 35 on the lower surface of the slide rail 5, a horizontally arranged adjusting rod 36 rotatably connected in the sliding groove 35, the two ends of the adjusting rod 36 having external threads with opposite directions of rotation, the slider 6 slidingly engaging with the sliding groove 35, the slider 6 having through threaded holes, the adjusting rod 36 threadedly engaging with the threaded holes, and one end of the adjusting rod 36 passing through the slide rail 5 and fixedly connected to an adjusting knob 37.

[0030] In use, according to the preset width processing requirements of the tire inner liner, rotating the adjustment knob 37 drives the adjustment rod 36 to rotate synchronously. The adjustment rod 36 drives the two sets of sliders 6 to move inward or outward synchronously along the moving groove 35. The sliders 6 drive the cutting structure below to move synchronously through the support plate 7 until the distance between the two sets of cutting structures matches the preset width of the inner liner. Then, stop rotating the adjustment knob 37. This achieves synchronous and symmetrical movement of the two sets of cutting structures, eliminating the need to adjust the single-sided cutting structure separately. It quickly and accurately matches the processing requirements of inner liners with different widths, improving the efficiency and accuracy of width adjustment.

[0031] For example, such as Figure 4 , Figure 5 As shown, the present invention also includes an adjustment structure comprising an adjustment groove 38 vertically formed on the frame 1, and adjustment seats 39 rotatably connected to both ends of the auxiliary roller 3, the adjustment seats 39 and the adjustment groove 38 being vertically slidably engaged; a vertically arranged screw 40 is rotatably connected to the upper surface of the adjustment seat 39, and adjustment holes corresponding to the screw 40 are formed on the upper surface of the frame 1, the screw 40 passes through the adjustment holes upward and is threadedly engaged with the adjustment holes, and a rotating handle 41 is fixedly connected to the upper end of the screw 40.

[0032] In use, according to the preset thickness processing requirements of the tire inner liner, rotate the rotation handle 41 of the corresponding auxiliary roller 3 to drive the screw 40 to rotate along the adjustment hole, thereby driving the adjustment seat 39 to move vertically up and down. The adjustment seat 39 drives the auxiliary roller 3 to rise and fall synchronously until the roller gap between the auxiliary roller 3 and the lower drive roller 2 matches the preset thickness of the inner liner. Stop rotating the rotation handle 41 to realize the height adjustment of the auxiliary roller 3. It can adapt to the calendering requirements of rubber substrates of different thicknesses and ensure the uniformity and accuracy of the calendering thickness of the inner liner.

[0033] For example, such as Figure 2 , Figure 3 As shown, the present invention also includes a drive motor 42 for driving the drive roller 2 to rotate on the outer side of the frame 1; a support base 43 is fixedly connected to the lower surface of the frame 1, and a control switch for controlling the drive motor 42 is provided on one side of the support base 43.

[0034] When in use, the device is placed on a flat processing table by the support base 43 at the bottom to ensure the overall level and stability of the device; after the power is turned on, the drive motor 42 is started by the control switch on one side of the support base 43. The drive motor 42 drives the drive roller 2 in the frame 1 to rotate and start the calendering operation.

[0035] The present invention also provides a tire inner liner calendering process, which uses the above-mentioned tire inner liner calendering apparatus and specifically includes the following steps: S1: According to the preset processing specifications of the tire inner liner, the operating adjustment structure drives the auxiliary roller 3 to move vertically up and down, adjusting the roller spacing between the auxiliary roller 3 and the drive roller 2 to match the calendering thickness requirements of the rubber substrate; at the same time, adjust the two sets of sliders 6 to drive the cutting structure to move synchronously, so that the spacing between the two sets of cutting structures matches the preset width of the tire inner liner, and complete the specification debugging before equipment processing. S2: The rubber substrate is flattened and fed between the drive roller 2 and the auxiliary roller 3. The drive roller 2 is driven to rotate horizontally. Through the rolling cooperation of the drive roller 2 and the auxiliary roller 3, the rubber substrate is continuously calendered to form the tire inner liner substrate. S3: The rubber substrate is continuously conveyed under the drive of the drive roller 2 and the auxiliary roller 3, and the scrap material overflowing from both sides of the substrate during the calendering process is simultaneously cut by the vertical cutting blade 8. S4: When the cutting edge of the cutting blade 8 becomes dull during long-term cutting, the cutting blade 8 is subjected to the cutting reaction force of the material, which pushes the cutting structure to swing away from the frame 1. The transmission structure drives the drive structure to work, and the drive structure drives the cutting blade 8 to move, realizing the automatic switching of the cutting blade surface. S5: The finished tire inner liner after calendering and online cutting is continuously fed out from the discharge end of the frame 1 by the conveying action of the drive roller 2 and the auxiliary roller 3, completing the integrated calendering and cutting processing of the tire inner liner.

[0036] In use, according to the preset thickness requirement of the tire inner liner, the rotating handle 41 corresponding to the auxiliary roller 3 is rotated, which drives the screw 40 to rotate along the adjustment hole of the frame 1, thereby driving the adjustment seat 39 to move vertically up and down along the adjustment groove 38. The adjustment seat 39 synchronously drives the auxiliary roller 3 to rise and fall until the roller gap between the auxiliary roller 3 and the lower drive roller 2 matches the preset thickness, and then the rotating handle 41 is stopped. According to the preset width requirement of the tire inner liner, the adjusting knob 37 on one side of the slide rail 5 is rotated, which drives the adjusting rod 36 to rotate synchronously. Using the external thread structure with opposite rotation directions at both ends of the adjusting rod 36, the two sets of sliders 6 are driven to move synchronously inward or outward along the moving groove 35. The sliders 6 drive the lower cutting structure to move synchronously through the support plate 7 until the gap between the two sets of cutting structures matches the preset width of the inner liner, and then the rotating knob is stopped. The rubber substrate is fed flat between the rotating drive roller 2 and the auxiliary roller 3. The drive roller 2 and the auxiliary roller 3 continuously calender the rubber substrate through rolling cooperation to form the tire inner liner substrate. While the substrate is continuously conveyed under the drive of the rollers, the vertical cutting blades 8 in the two sets of cutting structures accurately cut the scraps that overflow from both sides of the substrate during the calendering process, ensuring that the inner liner edge is neat. This achieves integrated calendering and cutting processing, replacing the traditional manual cutting method and greatly improving the cutting accuracy and calendering efficiency. When the cutting blade 8 becomes dull due to long-term cutting, the blade will be subjected to the cutting reaction force of the material, which will push the cutting structure to swing away from the frame 1 around the hinge shaft 34. The cutting structure will drive the connecting plate 24 to swing synchronously, which will cause the rack 26 to mesh with the drive gear 17 and drive the rotating shaft 15 to rotate. The rotating shaft 15 drives the telescopic rod 19 and the movable pin 21 to move through the rotating seat 18. The movable pin 21 will drive the cutting blade 8 to move down along the vertical slide 12 by engaging with the cutting blade 8's locking hole 14, thus realizing the automatic switching of the cutting blade surface. This effectively ensures the continuity of the tire inner liner calendering process, greatly improves production efficiency, and eliminates the tedious operation of manual blade changing, reducing labor costs and the risk of operational errors. As the rotating shaft 15 continues to rotate, when the cutting blade 8 located at the bottom moves down to the limit position, the chamfer 22 of the movable pin 21 contacts the edge of the waste blade locking hole 14 and generates pressure, causing the movable pin 21 to disengage from the locking hole 14, and the waste blade falls off automatically, completing the unloading. After the waste blades are unloaded, the rotating shaft 15 continues to rotate. The telescopic rod 19, in conjunction with the elastic support of the first spring 23, ensures that the positioning cylinder 44 moves vertically downward along the vertical positioning groove 13, driving the upper sharp blades to move down to the cutting station. At the same time, new blades can be inserted into the upper part of the sliding groove 12 of the first clamping plate 10 in advance. When the movable pin 21 rotates with the rotating shaft 15 to the corresponding position of the new blade engagement hole 14, the movable pin 21 smoothly engages with the engagement hole 14 through the chamfer 22, completing the automatic engagement of the new blade with the drive structure, realizing pre-installation and automatic replacement. If the rubber substrate thickness increases during processing, the increased cutting resistance will push the cutting structure to swing further around the hinge axis 34, so that the cutting blade 8 and the thickened substrate form a suitable tilted cutting angle. When the substrate thickness returns to normal, the elastic restoring force of the second spring 30 will drive the cutting structure to swing back to the vertical initial cutting state. The adaptive swing of the cutting structure can increase the effective cutting contact area with the thick substrate, disperse the cutting stress, avoid hard contact impact between the blade edge and the thick substrate, reduce the blade wear rate when cutting the thick substrate, extend the blade's single-use time, improve the cutting smoothness and cross-sectional flatness of the thick substrate edge, reduce the blade face switching frequency, and further improve production efficiency. After being calendered and precisely cut online, the finished tire inner liner is continuously fed out from the discharge end of the frame 1 under the continuous conveying action of the drive roller 2 and the auxiliary roller 3, completing the integrated calendering and cutting processing of the entire tire inner liner. This is suitable for industrial continuous production scenarios, solving the problem of low production efficiency caused by manual tool changing and segmented processing in traditional equipment, while ensuring the stability of finished product quality and reducing the risk of product scrap.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tire inner liner calendering apparatus, characterized in that, The system includes a frame (1), which contains two sets of horizontally arranged drive rollers (2). Each drive roller (2) is equipped with an auxiliary roller (3) above it. The frame (1) is equipped with an adjustment structure for driving the auxiliary rollers (3) to move up and down to adjust the roller spacing. The system is characterized in that a horizontally arranged slide rail (5) is fixedly connected to one side of the frame (1) via a crossbar (4). Two sets of sliders (6) are slidably connected to the lower surface of the slide rail (5). Each slider (6) is fixedly connected to a vertically arranged support plate (7). Two sets of cutting structures are provided below the slide rail (5). Several sets of vertically arranged cutting blades (8) are clamped in the cutting structures. A driving structure is provided on the side of the two sets of cutting structures that are far apart. The driving structure is used to drive the cutting blades (8) to move. A transmission structure is connected between the driving structure and the support plate (7). When the cutting structure swings away from the frame (1) due to the cutting reaction force of the material, the transmission structure drives the driving structure to work to drive the cutting blades (8) to move.

2. The tire inner liner calendering apparatus according to claim 1, characterized in that, The cutting structure includes a vertically arranged mounting plate (9). A first clamping plate (10) and a second clamping plate (11) are fixedly connected to one side of the mounting plate (9). The first clamping plate (10) is located above the second clamping plate (11). A through vertical sliding groove (12) is provided in both the first clamping plate (10) and the second clamping plate (11). The cutting blade (8) slides in cooperation with the sliding groove (12). The cutting surface of the cutting blade (8) faces the frame (1). A vertical positioning groove (13) communicating with the sliding groove (12) is provided on the outer side of the first clamping plate (10) and the second clamping plate (11). A snap-fit ​​hole (14) is provided on the cutting blade (8). The snap-fit ​​hole (14) is adapted to the driving structure.

3. The tire inner liner calendering apparatus according to claim 2, characterized in that, The drive structure includes a rotating shaft (15) rotatably mounted on the side of the mounting plate (9) away from the first clamping plate (10). A drive gear (17) is fixedly connected to the rotating shaft (15) via a one-way bearing (16). A rotating seat (18) is fixedly connected to the rotating shaft (15). Several sets of telescopic rods (19) are evenly distributed around the circumference on the outer side of the rotating seat (18). A horizontally positioned positioning cylinder (44) is fixed to the output end of the telescopic rod (19). A movable pin (21) is connected to the positioning cylinder (44) via a support spring (20). The movable pin (21) engages with the snap-fit ​​hole (14) of the cutting blade (8). A chamfer (22) is provided at one end of the movable pin (21) facing the snap-fit ​​hole (14). A first spring (23) is fixedly connected between the output end of the telescopic rod (19) and the positioning cylinder (44).

4. The tire inner liner calendering apparatus according to claim 3, characterized in that, The transmission structure includes a vertically arranged connecting plate (24), one end of a rotating shaft (15) is rotatably connected to one side of the connecting plate (24), and the upper and lower parts of the connecting plate (24) are fixedly connected to the first clamping plate (10) and the second clamping plate (11) through connecting rods (25); a horizontally arranged rack (26) meshes with the drive gear (17), one end of the rack (26) is pressed against one side of the support plate (7), and a horizontally arranged first fixing plate (27) is fixedly connected to one side of the connecting plate (24). The first fixing plate (27) is located above the rack (26), and a limiting groove (28) is opened on the first fixing plate (27). A positioning block (29) that cooperates with the limiting groove (28) is fixedly connected to the upper surface of the rack (26). A second spring (30) is fixedly connected between the first fixed plate (27) and the support plate (7), and a third spring (31) is fixedly connected between the first fixed plate (27) and the end of the rack (26).

5. A tire inner liner calendering apparatus according to claim 4, characterized in that, A second fixing plate (32) is fixedly connected to the upper side of the connecting plate (24). The second fixing plate (32) is provided with a horizontally arranged swing rod (33) on the side near the support plate (7). One end of the swing rod (33) is fixedly connected to the support plate (7), and the other end of the swing rod (33) is hinged to the second fixing plate (32) through the hinge shaft (34).

6. A tire inner liner calendering apparatus according to claim 5, characterized in that, The lower surface of the slide rail (5) is provided with a moving groove (35). A horizontally arranged adjusting rod (36) is rotatably connected in the moving groove (35). The two ends of the adjusting rod (36) are provided with external thread structures with opposite rotation directions. The slider (6) is slidably engaged with the moving groove (35). The slider (6) is provided with through threaded holes. The adjusting rod (36) is threadedly engaged with the threaded holes. One end of the adjusting rod (36) passes through the slide rail (5) and is fixedly connected with an adjusting knob (37).

7. A tire inner liner calendering apparatus according to claim 6, characterized in that, The adjustment structure includes an adjustment groove (38) vertically opened on the frame (1), and adjustment seats (39) rotatably connected to both ends of the auxiliary roller (3). The adjustment seats (39) and the adjustment groove (38) are vertically slidably engaged. A vertically arranged screw (40) is rotatably connected to the upper surface of the adjustment seat (39). An adjustment hole corresponding to the screw (40) is opened on the upper surface of the frame (1). The screw (40) passes through the adjustment hole upward and is threadedly engaged with the adjustment hole. A rotating handle (41) is fixedly connected to the upper end of the screw (40).

8. A tire inner liner calendering apparatus according to claim 7, characterized in that, The frame (1) is provided with a drive motor (42) for driving the drive roller (2) to rotate; a support base (43) is fixedly connected to the lower surface of the frame (1), and a control switch for controlling the drive motor (42) is provided on one side of the support base (43).

9. A tire inner liner calendering process, characterized in that, The tire inner liner calendering apparatus according to any one of claims 1 to 8 specifically includes the following steps: S1: According to the preset processing specifications of the tire inner liner, the operating adjustment structure drives the auxiliary roller (3) to move vertically up and down, and adjusts the roller spacing between the auxiliary roller (3) and the driving roller (2) to match the calendering thickness requirements of the rubber substrate; at the same time, adjust the two sets of sliders (6) to drive the cutting structure to move synchronously, so that the spacing between the two sets of cutting structures matches the preset width of the tire inner liner, and complete the specification debugging before the equipment is processed. S2: The rubber substrate is flattened and fed between the drive roller (2) and the auxiliary roller (3). The drive roller (2) is driven to rotate horizontally. Through the rolling cooperation of the drive roller (2) and the auxiliary roller (3), the rubber substrate is continuously calendered to form the tire inner liner substrate. S3: The rubber substrate is continuously conveyed under the drive of the drive roller (2) and the auxiliary roller (3), and the scrap material overflowing from both sides of the substrate during the calendering process is simultaneously cut by the vertical cutting blade (8). S4: When the cutting edge of the cutting blade (8) becomes dull during long-term cutting, the cutting blade (8) is subjected to the cutting reaction force of the material, which pushes the cutting structure to swing away from the frame (1). The transmission structure drives the drive structure to work, and the drive structure drives the cutting blade (8) to move, thereby realizing the automatic switching of the cutting blade surface. S5: The finished tire inner liner after calendering and online cutting is continuously fed out from the discharge end of the frame (1) by the conveying action of the drive roller (2) and the auxiliary roller (3), completing the integrated calendering and cutting processing of the tire inner liner.

Images