A waste recycling device for vehicle film production

Abstract

This invention relates to the technical field of vehicle film recycling devices, and discloses a waste recycling device for vehicle film production. The device includes a tank, with a multi-tooth intermittent transmission system mounted on the top of the tank. The multi-tooth intermittent transmission system is connected to a horizontally movable transverse vibrating table and a reversing shaft capable of reciprocating forward and reverse rotation within a set period. A vertically movable longitudinal vibrating frame, driven by the reversing shaft, is mounted on the transverse vibrating table. The reciprocating stroke of the longitudinal vibrating frame is periodically adjustable. A lifting cylinder is mounted on the bottom of the longitudinal vibrating frame, and a screening and lifting system is installed inside the lifting cylinder to circulate and lift waste materials from bottom to top and to screen the waste. This invention systematically solves the core problems of low recycling efficiency, high energy consumption, heavy pollution, and frequent maintenance in existing vehicle film recycling technologies through an integrated design of vibration dispersion, differential speed reversal, intermittent transmission, dynamic screening, composite crushing, sealing structure, and thermal softening.

Description

Technical Field

[0001] This invention relates to the field of vehicle film recycling devices, and more specifically, to a waste recycling device for vehicle film production. Background Technology

[0002] In the production process of automotive window film, the finished film needs to be wound into film rolls using a winding machine, and then packaged and sold. However, after winding, due to certain errors in the operation of the winding machine, uneven burrs will appear on the edges of the film rolls. These burrs will affect the sale of the film rolls, so the edges of the film rolls need to be trimmed. These trimmed burrs are film waste, which needs to be recycled and reused to save production costs. In the prior art, patent document with publication number CN220219300U discloses a gas separation membrane waste recycling device. The above device uses a circular knife and a cutting bottom roller to pre-cut the waste, coarsely cutting the waste. Then, the waste is thoroughly crushed by a first crushing roller and a second crushing roller, improving the crushing effect of the waste, so as to facilitate the subsequent recycling of the waste and improve its practicality. However, the above device has the following technical problems when in use:

[0003] The existing device lacks an efficient vibration dispersion mechanism, and the waste is easy to accumulate in the tank. The traditional device uses a single-direction driven blade, which is difficult to cope with the toughness and extensibility of the vehicle film, resulting in incomplete crushing. In the continuous shearing mode of the existing device, lightweight film waste is easy to wrap around the blade. The fixed blade of the existing device can only provide unidirectional shearing force for the extensible film, which can easily cause the waste to stretch and wrap. Moreover, the blade wear is concentrated in a local area, resulting in a short service life.

[0004] Based on this, the present invention provides a waste recycling device for vehicle film production to solve the technical problems mentioned in the background art. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a waste recycling device for automotive film production. Through the integrated design of vibration dispersion, differential direction change, intermittent transmission, dynamic screening, composite crushing, sealing structure, and thermal softening, this invention systematically solves the core problems of low recycling efficiency, high energy consumption, heavy pollution, and frequent maintenance of automotive film in existing technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a waste recycling device for vehicle film production, comprising a tank, a multi-tooth intermittent transmission system installed on the top of the tank, a transverse vibrating table that can move back and forth in the horizontal direction and a reversing shaft that can reciprocate in both forward and reverse directions within a set period are connected to the multi-tooth intermittent transmission system, a longitudinal vibrating frame that is driven by the reversing shaft and can move back and forth in the vertical direction is installed on the transverse vibrating table, the reciprocating stroke of the longitudinal vibrating frame is periodically adjustable, a lifting cylinder is installed on the bottom surface of the longitudinal vibrating frame, a screening and lifting system is provided inside the lifting cylinder for cyclically lifting and screening waste from bottom to top, a positive knife cylinder and a negative knife cylinder are respectively rotatably sleeved on the lifting cylinder from top to bottom, the positive knife cylinder and the negative knife cylinder rotate in opposite directions on the same axis, and multiple knife assemblies are installed on both the positive knife cylinder and the negative knife cylinder;

[0007] The tool assembly includes a tool holder and a fixed tooth ring. Both the forward and reverse tool barrels are fixedly connected to the tool holder at their corresponding positions. A tool shaft that can reciprocate within a set angle is rotatably mounted on the tool holder. A first torsion spring is fixedly installed at the rotatable connection between the tool shaft and the tool holder. A driven bevel tooth is installed at the tail end of the tool shaft. The fixed tooth ring is fixedly mounted on the lifting cylinder. The fixed tooth ring is provided with multiple bevel tooth surfaces and multiple toothless surfaces. The bevel tooth surfaces are adapted to and connected with the driven bevel tooth. A moving cutting edge is installed on the tool shaft.

[0008] The bottom of the tank is provided with a material collection area. Multiple sets of fixed blades are installed on the reverse blade cylinder at the position corresponding to the material collection area. A material collection cover is installed at the bottom of the material collection area. The material collection cover is fixedly connected to the lifting cylinder. The top of the tank is provided with a heat supply component that supplies heat to the inner cavity of the tank.

[0009] As a preferred embodiment of the present invention, the multi-tooth intermittent transmission system includes a servo motor mounted on the tank body, an eccentric shaft rotatably connected to the tank body, and a bracket fixedly mounted inside the tank body. The output shaft of the servo motor is connected to the eccentric shaft via a first synchronous belt. An eccentric wheel is mounted at the bottom of the eccentric shaft. A roller is rotatably mounted on the transverse vibration table. The outer contour of the eccentric wheel rolls in contact with the outer contour of the roller. A reset elastic element that is limited by the tank body is mounted on the side of the transverse vibration table. A guide rail frame that is slidably connected to the transverse vibration table is fixedly mounted on the inner wall of the tank body.

[0010] As a preferred embodiment of the present invention, the multi-tooth intermittent transmission system further includes a first incomplete gear and a second incomplete gear mounted on an eccentric shaft. Two symmetrically arranged power interruption zones are provided between the first incomplete gear and the second incomplete gear. A large circular shaft, a small circular shaft, and a spiral shaft are rotatably mounted on the bracket. A second torsion spring is fixedly installed at the rotatable connection between the large circular shaft and the bracket. Two differential gears are mounted on the large circular shaft, and the two differential gears are respectively adapted and connected to the first incomplete gear and the second incomplete gear. A second synchronous belt is connected between the large circular shaft and the small circular shaft. First bevel gears are mounted on both the small circular shaft and the spiral shaft, and the two first bevel gears mesh with each other. A hollow bushing is rotatably mounted on the transverse vibration table. A first spline groove with open ends and slidably connected to the spiral shaft is fixedly opened inside the hollow bushing. The cross-section of the first spline groove and the spiral shaft are both regular hexagonal. The reversing shaft is rotatably mounted on the bracket, and second bevel gears are mounted on both the hollow bushing and the reversing shaft.

[0011] As a preferred embodiment of the present invention, the first incomplete gear and the second incomplete gear are symmetrically arranged on the eccentric shaft. The first incomplete gear and the second incomplete gear have different heights in the vertical direction. The central angles corresponding to the first incomplete gear and the second incomplete gear are both 120°. The central angles corresponding to the two power interruption zones are both 60°. The radii of the first incomplete gear and the second incomplete gear are different. The radii of the two differential gears are also different.

[0012] As a preferred embodiment of the present invention, the multi-tooth intermittent transmission system further includes a reciprocating lead screw rotatably connected to the support and vertically arranged. A third torsion spring is fixedly provided at the rotatable connection between the reciprocating lead screw and the support. A third synchronous belt is driven between the reciprocating lead screw and the reversing shaft. The reciprocating lead screw is driven between the longitudinal vibration frame.

[0013] As a preferred embodiment of the present invention, the screening and lifting system includes a lifting shaft rotatably installed inside the lifting cylinder. The top of the lifting shaft is fixedly provided with a second spline groove with a top opening and slidably connected to a reversing shaft. The cross-sections of the second spline groove and the reversing shaft are both regular hexagonal. A spiral screen blade is installed on the lifting shaft. The spiral screen blade is in contact with the lifting cylinder. Vertically arranged screen holes are evenly distributed on the spiral screen blade. A set of discharge ports arranged in a circumferential array is provided at the upper part of the lifting cylinder. A set of return ports arranged in a circumferential array is provided at the lower part of the lifting cylinder and at the position corresponding to the material collection area. An open leakage section is provided on the positive cutter cylinder and at the position corresponding to the discharge port. A feed nozzle is connected to the tank body.

[0014] As a preferred embodiment of the present invention, it further includes a sleeve and a rotating seat rotatably fitted onto the positive cutter cylinder. A set of connecting plates is installed between the sleeve, the rotating seat, and the negative cutter cylinder. A driven bevel gear is installed on both the rotating seat and the positive cutter cylinder. A steering shaft is rotatably mounted on the longitudinal vibration frame. A steering bevel gear is mounted on the steering shaft. Both driven bevel gears are connected to the steering bevel gear in a transmission manner. The two driven bevel gears are respectively located on both sides of the steering bevel gear. A belt shaft is rotatably mounted on the longitudinal vibration frame. A fourth synchronous belt is connected to the belt shaft and the lifting shaft in a transmission manner. A linkage gear is installed on both the belt shaft and the lifting shaft. The two linkage gears mesh with each other.

[0015] As a preferred embodiment of the present invention, the sleeve is a hollow cylindrical structure with openings at both ends, a sealing ring cotton is installed between the sleeve and the tank body, the sealing ring cotton is made of sponge material, and the material collection cover is made of silicone material.

[0016] As a preferred embodiment of the present invention, the heat delivery component includes a duct installed on the tank body, the bottom end of the duct being connected to the inner cavity of the tank body, a filter element and an electric heating fan being installed sequentially from top to bottom on the inner wall of the duct, a temperature probe for monitoring the temperature of the inner cavity of the tank body being installed on the tank body, a central control host being installed on the end face of the tank body, and the data terminal of the temperature probe being connected to the central control host.

[0017] As a preferred embodiment of the present invention, the number of conical tooth surfaces and toothless surfaces is the same, the central angles corresponding to the conical tooth surfaces and toothless surfaces are the same, and the plurality of conical tooth surfaces and the plurality of toothless surfaces are arranged in pairs on the fixed tooth ring.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] Existing technologies use a single-direction driven blade, which is difficult to effectively break the tough material of automotive films, resulting in incomplete breaking. This invention uses an eccentric shaft to drive a first incomplete gear and a second incomplete gear to alternately mesh with a differential gear. The difference in gear radius and height creates a speed difference, forcing the large circular shaft to reset through the energy stored in the second torsion spring. This achieves periodic forward and reverse rotation of the reversing shaft. The reversing shaft drives the positive and negative blade cylinders in the lifting cylinder to rotate coaxially and in opposite directions. The moving blade on the blade shaft oscillates back and forth under the action of the conical tooth surface of the fixed gear ring, forming a "impact shearing" composite breaking effect. At the same time, the fixed blade at the bottom of the negative blade cylinder performs secondary breaking on the falling material. This bidirectional, reversible shearing mode can destroy the fiber structure of automotive films from multiple angles, and is especially suitable for the layered breaking of multi-layer composite films. Compared with traditional unidirectional shearing, the breaking efficiency is significantly improved, and the film stretching and entanglement problems caused by unidirectional cutting can be effectively avoided.

[0020] In existing continuous shearing modes, lightweight film waste easily entangles the blades, and the unidirectional shearing force of the fixed blades leads to the stretching and entanglement of waste and severe local wear of the blades. This invention sets up a power interruption zone in the multi-tooth intermittent transmission system, allowing the reversing shaft to periodically enter a power-free transmission phase during the drive process. This provides relaxation time for the lightweight film entangled on the blade assembly, avoiding fiber accumulation or blade jamming caused by continuous shearing. At the same time, the reciprocating stroke of the longitudinal vibrating frame is periodically adjustable. Through the linkage between the reciprocating screw and the reversing shaft, the vibration stroke of the longitudinal vibrating frame is alternately and cyclically changed. During large-stroke vibration, a stronger tearing force can be applied to hard waste, while small-stroke vibration quickly cuts the film fibers with high-frequency, small-amplitude vibration. The change in vibration stroke also creates a dynamic opening and closing effect on the screen holes of the spiral screen blades, shaking off the attached fine particles and significantly reducing the screen clogging rate. Compared with the continuous transmission and fixed vibration modes of traditional devices, this invention effectively solves the industry pain points of "blade entanglement" and "screen clogging" by addressing both power transmission and vibration parameter adjustment, reducing equipment maintenance costs and improving recycling efficiency.

[0021] Existing technologies do not consider the material characteristics of vehicle-mounted film waste, resulting in high crushing resistance and low processing efficiency. This invention delivers hot air at 60℃-120℃ into the inner cavity through a heating element at the top of the tank. Temperature probes and a central control unit are used to achieve precise temperature control. The hot air penetrates the waste layer, reducing the intermolecular forces of the polymer chains and making the film more brittle. The softened waste experiences significantly reduced resistance during shearing by the blade assembly, resulting in more uniform particle size. Simultaneously, the vertical vibration of the longitudinal vibrating frame, the lifting and screening of the lifting cylinder, and the rotational crushing of the blade assembly form a multi-action synergy. For example, when processing waste containing adhesives, vibration can break the adhesive bonds, and the synchronously rotating blade assembly and screen blades quickly complete crushing and screening, improving efficiency by more than 50% compared to traditional step-by-step processing.

[0022] This invention utilizes a servo motor in a multi-tooth intermittent transmission system to drive an eccentric shaft and eccentric wheel. This, combined with rollers and a reset elastic element on the transverse vibrating table, enables the transverse vibrating table to reciprocate horizontally along the guide rail. This high-frequency vibrating screening principle allows waste materials to be rapidly dispersed and evenly heated within the tank. Compared to existing technologies that lack vibration dispersion leading to waste accumulation, this invention significantly improves waste processing efficiency and avoids insufficient crushing and uneven heat softening caused by accumulation. Simultaneously, the elastic limiting mechanism of the reset elastic element reduces the impact of vibration on the equipment, extending the device's service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a waste recycling device for vehicle film production according to the present invention;

[0024] Figure 2 For the present invention Figure 1 A schematic diagram of the cross-sectional structure;

[0025] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the local structure at point A;

[0026] Figure 4 For the present invention Figure 2 A partially enlarged structural diagram of the waste material disposal area for the CRRC film.

[0027] Figure 5 For the present invention Figure 2 A magnified schematic diagram of the local structure at point C;

[0028] Figure 6 This is a schematic diagram of the structure of the sleeve and belt shaft of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the large circular shaft and the support of the present invention;

[0030] Figure 8 This is a schematic diagram of the eccentric shaft and the lifting cylinder of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the positive and negative cutter barrels of the present invention;

[0032] Figure 10 For the present invention Figure 9 A magnified schematic diagram of the local structure at point D;

[0033] Figure 11 This is a schematic diagram of the fixed tooth ring.

[0034] In the diagram: 1. Tank body; 2. Horizontal vibrating table; 3. Reversing shaft; 4. Longitudinal vibrating frame; 5. Lifting cylinder; 6. Positive cutter cylinder; 7. Reverse cutter cylinder; 8. Cutter holder; 9. Fixed gear ring; 10. Cutter shaft; 11. First torsion spring; 12. Collection area; 13. Fixed cutter edge; 14. Collection cover; 15. Heating element; 16. Moving cutter edge; 17. Servo motor; 18. Eccentric shaft; 19. Support; 20. Eccentric wheel; 21. Roller; 22. Reset elastic element; 23. First incomplete gear; 24. Second incomplete gear. 25. Complete gear; 26. Large round shaft; 27. Small round shaft; 28. Flower shaft; 29. ​​Second torsion spring; 30. Differential gear; 31. Hollow bushing; 32. Reciprocating lead screw; 33. Third torsion spring; 34. Lifting shaft; 35. Spiral screen blade; 36. Screen hole; 37. Discharge port; 38. Return port; 39. Rotary seat; 40. Steering shaft; 41. Belt shaft; 42. Linkage gear; 43. Sleeve; 44. Sealing ring cotton; 45. Temperature probe; 46. Central control host; 47. Feed nozzle. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 11 As shown, the present invention provides a waste recycling device for vehicle film production, including a tank 1. A multi-tooth intermittent transmission system is installed on the top of the tank 1. A transverse vibration table 2 that can move back and forth in the horizontal direction and a reversing shaft 3 that can reciprocate in both forward and reverse directions within a set period are connected to the multi-tooth intermittent transmission system.

[0037] The transverse vibration table 2 is equipped with a longitudinal vibration frame 4, which is driven by a reversing shaft 3 and can move back and forth in the vertical direction. The back and forth stroke of the longitudinal vibration frame 4 is periodically adjustable.

[0038] The multi-tooth intermittent transmission system includes a servo motor 17 mounted on the tank 1, an eccentric shaft 18 rotatably connected to the tank 1, and a bracket 19 fixedly installed inside the tank 1. The output shaft end of the servo motor 17 is connected to the eccentric shaft 18 via a first synchronous belt. An eccentric wheel 20 is mounted at the bottom of the eccentric shaft 18. A roller 21 is rotatably mounted on the transverse vibration table 2. The outer contour of the eccentric wheel 20 rolls in contact with the outer contour of the roller 21. A reset elastic element 22 that is limited by the tank 1 is mounted on the side of the transverse vibration table 2. A guide rail frame that is slidably connected to the transverse vibration table 2 is fixedly mounted on the inner wall of the tank 1.

[0039] The eccentric shaft 18 and eccentric wheel 20 are driven by the servo motor 17, and together with the roller 21 and the reset elastic element 22 on the transverse vibrating table 2, the transverse vibrating table 2 is made to reciprocate horizontally along the guide rail frame. This design effectively simulates the principle of high-frequency vibrating screening, so that the waste material is quickly dispersed and evenly heated in the tank 1, avoiding the decrease in processing efficiency caused by the accumulation of waste material. The elastic limiting mechanism of the reset elastic element 22 reduces the impact of vibration on the structure of the tank 1 and extends the service life of the equipment. At the same time, the sliding connection of the guide rail frame ensures the accuracy and stability of the movement of the transverse vibrating table 2.

[0040] By reciprocating in the horizontal direction of the transverse vibrating table 2, the moving blade 16 and the fixed blade 13 can move horizontally back and forth at a set speed during their revolution. Through the back and forth movement of the blades during rotation, synchronous rotary cutting and frictional transverse cutting of the vehicle film waste can be achieved, thereby improving the crushing efficiency and crushing effect of the vehicle film waste. At the same time, through the horizontal back and forth movement of the moving blade 16 and the fixed blade 13, the vehicle film waste adhering to or wrapped around the blades can be shaken off or transversely cut off, thereby reducing the entanglement rate of the vehicle film waste on the moving blade 16 and the fixed blade 13.

[0041] The multi-tooth intermittent transmission system also includes a first incomplete gear 23 and a second incomplete gear 24 mounted on the eccentric shaft 18, with two symmetrically arranged power interruption zones between the first incomplete gear 23 and the second incomplete gear 24.

[0042] A large round shaft 25, a small round shaft 26, and a flower shaft 27 are rotatably mounted on the bracket 19. A second torsion spring 28 is fixedly installed at the rotatable connection between the large round shaft 25 and the bracket 19. Two differential gears 29 are mounted on the large round shaft 25. The two differential gears 29 are respectively adapted and connected to the first incomplete gear 23 and the second incomplete gear 24.

[0043] The first incomplete gear 23 and the second incomplete gear 24 are symmetrically arranged on the eccentric shaft 18. The first incomplete gear 23 and the second incomplete gear 24 have different heights in the vertical direction. The central angles corresponding to the first incomplete gear 23 and the second incomplete gear 24 are both 120°. The central angles corresponding to the two power interruption zones are both 60°. The radii of the first incomplete gear 23 and the second incomplete gear 24 are different. The radii of the two differential gears 29 are also different.

[0044] The eccentric shaft 18 drives the first incomplete gear 23 and the second incomplete gear 24 to alternately mesh with the differential gear 29. The difference in gear radius and height creates a speed difference, which forces the large circular shaft 25 to reset through the energy stored in the second torsion spring 28, realizing the periodic forward and reverse rotation of the reversing shaft 3. This process provides reversing power for the recycling of vehicle film waste through the "intermittent meshing differential reversing" mechanism of gear transmission, breaking through the limitation of the traditional device's unidirectional drive. When the vehicle film waste needs to be crushed at multiple angles due to the toughness of the material, the forward and reverse rotation of the reversing shaft 3 can drive the spiral screen blades in the lifting cylinder 5 to alternately change the rotation direction, so that the vehicle film waste is subjected to bidirectional rubbing and screening during the lifting process, which significantly improves the screening accuracy. It is especially suitable for the layered crushing and screening needs of multi-layer composite film vehicle film waste.

[0045] Meanwhile, by periodically adjusting the rotation speed and direction of the reversing shaft 3, on the one hand, the crushing efficiency and crushing intensity of the moving blade 16 and the fixed blade 13 on the vehicle film waste can be changed cyclically, and on the other hand, the crushing and cutting direction of the moving blade 16 and the fixed blade 13 on the vehicle film waste can be changed cyclically, and finally the alternating direction-changing shearing and crushing effect of the vehicle film waste can be achieved.

[0046] The power interruption zone is formed by setting a symmetrical 60° central angle interruption zone between the first incomplete gear 23 and the second incomplete gear 24, so that the reversing shaft 3 periodically enters the power transmission-free stage during the driving process.

[0047] This intermittent transmission mechanism provides a brief pause in the power interruption zone during waste crushing, allowing the lightweight film wrapped around the blade assembly to relax and preventing fiber accumulation or blade jamming caused by continuous shearing. It is particularly suitable for the characteristics of easily entangled vehicle-mounted film waste. Combined with the radius difference of the differential gear 29, the power interruption zone causes the rotation direction of the reversing shaft 3 to switch periodically, driving the positive blade cylinder 6 and the negative blade cylinder 7 to rotate alternately in opposite directions, forming a dynamic change in shearing force. This process can tear the waste into more uniform particles, reduce large pieces of residue, and at the same time disperse the equipment load and reduce gear wear. The short pause in vibration during the interruption phase, in conjunction with the vertical stroke adjustment of the longitudinal vibration frame 4, ensures that the waste in the spiral screen blades 34 is fully dispersed in the screen holes 35, avoiding screen clogging caused by continuous vibration and significantly improving the screening efficiency of fine particles.

[0048] Compared to traditional continuous transmission devices, this design solves the industry pain points of "knife entanglement" and "screen blockage" in vehicle-mounted membrane waste crushing through precise intermittent power distribution. It reduces energy consumption and extends the life of key components while ensuring high recycling rate, demonstrating a deep integration of structural innovation and process adaptation.

[0049] A second synchronous belt is connected between the large round shaft 25 and the small round shaft 26. A first bevel gear is installed on both the small round shaft 26 and the spline shaft 27. The two first bevel gears mesh with each other. A hollow shaft sleeve 30 is rotatably installed on the transverse vibration table 2. The hollow shaft sleeve 30 has a first spline groove with open ends and slidably connected to the spline shaft 27. The cross-section of the first spline groove and the spline shaft 27 are both regular hexagonal. The reversing shaft 3 is rotatably installed on the bracket 19. A second bevel gear is installed on both the hollow shaft sleeve 30 and the reversing shaft 3.

[0050] The large circular shaft 25 drives the small circular shaft 26 to rotate via the second synchronous belt. The rotation is then transmitted to the spline shaft 27 via the first bevel gear. The spline shaft 27 drives the hollow bushing 30 to rotate synchronously via the first regular hexagonal spline groove. Finally, the second bevel gear transmits the power to the reversing shaft 3. This transmission chain, through the spline sliding connection design, ensures that the power transmission is uninterrupted when the horizontal vibration table 2 moves horizontally, thus solving the problem of easy jamming of traditional rigid transmission under vibration conditions.

[0051] The multi-tooth intermittent transmission system also includes a reciprocating lead screw 31 that is rotatably connected to the bracket 19 and is vertically arranged. A third torsion spring 32 is fixedly provided at the rotatable connection between the reciprocating lead screw 31 and the bracket 19. A third synchronous belt is connected between the reciprocating lead screw 31 and the reversing shaft 3. The reciprocating lead screw 31 is connected to the longitudinal vibration frame 4.

[0052] Servo motor 17 drives eccentric shaft 18 to rotate, and eccentric shaft 18 drives first incomplete gear 23 and second incomplete gear 24 to move. The first incomplete gear 23 and second incomplete gear 24 have different radii and different vertical heights on eccentric shaft 18. At the same time, a power interruption zone is set on eccentric shaft 18.

[0053] When the eccentric shaft 18 rotates, the first incomplete gear 23 and the second incomplete gear 24 will alternately mesh with the two differential gears 29. Since the radii of the first and second incomplete gears 24 and the differential gears 29 are different, the reciprocating screw 31 will alternately cycle to realize the difference in rotation speed and the difference in the number of rotations. The different number of rotations of the reciprocating screw 31 will lead to different reciprocating displacement strokes of the longitudinal vibration frame 4, and finally realize the alternating cyclic change of the vibration stroke of the longitudinal vibration frame 4.

[0054] In the power interruption zone, the differential gear 29 is in an idling state. The large circular shaft 25 stores energy and resets under the action of the second torsion spring 28, thereby driving the reversing shaft 3 to achieve periodic forward and reverse rotation. The third torsion spring 32 drives the reciprocating screw 31 to automatically reset, thereby forming the forward and reverse rotation of the reciprocating screw 31.

[0055] The stroke change of the longitudinal vibration frame 4 drives the positive cutter cylinder 6 and the negative cutter cylinder 7 inside the lifting cylinder 5 to rotate in opposite directions, and the swing of the cutter assembly forms a differentiated shearing frequency;

[0056] When the stroke increases, a stronger tearing force is applied to the hard waste. When the stroke decreases, the high-frequency small-amplitude vibration can quickly cut the film fiber and prevent the waste from tangling around the blade. The intermittent extension and contraction of the stroke allows the waste to obtain a brief relaxation gap after the blade is sheared. Combined with the power interruption zone, the power pause effectively reduces the problem of blade jamming caused by continuous force on long fiber waste.

[0057] The vertical vibration of the longitudinal vibrating frame 4 forces the waste material in the spiral screen blades 34 to jump, and the screen holes 35 form a dynamic opening and closing effect under the change of vibration stroke, which shakes the fine particles attached to the hole wall to the collection area 12, significantly reducing the screen hole clogging rate.

[0058] During large-stroke vibration, the waste material is thrown up significantly in the lifting cylinder 5. Light film fragments pass through the screen hole 35 first due to the difference in inertia, while heavy impurities continue to rise with the spiral screen blades 34. Small-stroke vibration finely separates the residual particles to ensure the purity of the recycled material.

[0059] The automatic adjustment function of the stroke can adapt to the processing needs of waste materials of different densities. By adjusting the residence time of the waste material in the feeding cylinder 5, hot air can penetrate the material layer evenly, accelerate the softening or drying of the membrane material, and improve the efficiency of subsequent crushing and screening.

[0060] The bottom surface of the longitudinal vibrating frame 4 is equipped with a lifting cylinder 5, and the lifting cylinder 5 is equipped with a screening and lifting system that circulates and lifts waste materials from bottom to top and screens the waste materials.

[0061] The material lifting cylinder 5 is fitted with a positive cutter cylinder 6 and a negative cutter cylinder 7 respectively from top to bottom. The positive cutter cylinder 6 and the negative cutter cylinder 7 rotate in opposite directions on the same axis.

[0062] The material screening and lifting system includes a lifting shaft 33 rotatably installed inside the lifting cylinder 5. The top of the lifting shaft 33 is fixedly provided with a second spline groove with a top opening and slidably connected to the reversing shaft 3. The cross-section of the second spline groove and the reversing shaft 3 is a regular hexagon. A spiral screen blade 34 is installed on the lifting shaft 33. The spiral screen blade 34 is in contact with the lifting cylinder 5. Vertically arranged screen holes 35 are evenly distributed on the spiral screen blade 34. A set of discharge ports 36 arranged in a circular array is provided at the upper part of the lifting cylinder 5. A set of return ports 37 arranged in a circular array is provided at the lower part of the lifting cylinder 5 and at the position corresponding to the collection area 12. An open leakage section is provided on the positive knife cylinder 6 and at the position corresponding to the discharge port 36. A feed nozzle 46 is connected to the tank body 1.

[0063] The reversing shaft 3 drives the lifting shaft 33 to rotate through the second spline groove. The spiral screen blades 34 transport the vehicle film waste from the collection area 12 from bottom to top. The screen holes 35 intercept large particles of vehicle film waste. Qualified particles enter the crushing area through the discharge port 36, and unqualified particles are recycled through the return port 37. This process forms a closed loop of "lifting-screening-returning". Multiple cutter assemblies are installed on both the positive cutter cylinder 6 and the negative cutter cylinder 7.

[0064] When the spiral screen blades 34 are working, even if the lifting shaft 33 rotates in the opposite direction, the vertical vibration of the longitudinal vibrating frame 4 will still assist the jumping motion of the waste. Combined with the dynamically opening and closing screen holes 35, it ensures that the waste continues to move upward in the lifting cylinder 5. The periodic stroke change of the longitudinal vibrating frame 4 is adjusted by the reciprocating screw 31. Large stroke vibration can force the waste to overcome the resistance brought by the reverse rotation, while small stroke high-frequency vibration can offset the negative impact of the reverse rotation on the lifting through dynamic screening.

[0065] In addition, the design of the return port 37 allows substandard particles to re-enter the circulation, avoiding material accumulation caused by brief reversal. The power interruption zone in the multi-tooth intermittent transmission system provides a powerless transmission stage for the reversing shaft 3. At this time, the short pause of the lifting shaft 33 maintains the lifting state of the waste through the inertia and vibration of the spiral screen blades.

[0066] The tool assembly includes a tool holder 8 and a fixed tooth ring 9. The positive tool barrel 6 and the negative tool barrel 7 are fixedly connected to the tool holder 8 at corresponding positions. A tool shaft 10 that can reciprocate within a set angle is rotatably mounted on the tool holder 8. A first torsion spring 11 is fixedly provided at the rotatable connection between the tool shaft 10 and the tool holder 8. A driven bevel tooth is installed at the tail end of the tool shaft 10. The fixed tooth ring 9 is fixedly mounted on the lifting cylinder 5. The fixed tooth ring 9 is provided with multiple bevel tooth surfaces and multiple toothless surfaces. The bevel tooth surfaces are adapted to the driven bevel teeth. A moving cutting edge 16 is installed on the tool shaft 10.

[0067] The number of conical tooth surfaces and toothless surfaces is the same, the central angles corresponding to the conical tooth surfaces and toothless surfaces are the same, and multiple conical tooth surfaces and multiple toothless surfaces are arranged in pairs on the fixed tooth ring 9.

[0068] The positive cutter cylinder 6 and the negative cutter cylinder 7 rotate in opposite directions on the same axis. The driven bevel teeth on the cutter shaft 10 oscillate back and forth along the bevel tooth surface of the fixed tooth ring 9. The first torsion spring 11 provides the reset torque, so that the moving cutter 16 performs "impact-shear" compound crushing on the vehicle film waste. The fixed cutter 13 at the bottom of the negative cutter cylinder 7 simultaneously performs secondary crushing on the falling material. Compared with the traditional fixed blade structure, the crushing efficiency and precision are significantly improved.

[0069] When the longitudinal vibrating frame 4 moves vertically, the steering shaft 39 drives the positive cutter cylinder 6 and the negative cutter cylinder 7 to rotate synchronously through the steering bevel gear. The belt shaft 40 drives the lifting shaft 33 to rotate through the fourth synchronous belt and the linkage gear 41, forming a "vibration rotation" linkage mechanism. The sleeve 42 connects the rotating seat 38 and the negative cutter cylinder 7 through the connecting plate. The sealing ring cotton 43 prevents dust leakage. This design realizes the multi-action coordination of lifting of the lifting cylinder 5, crushing of the cutter group, and rotation of the screen leaf. For example, when processing vehicle heat insulation film waste with adhesive, the vibration of the longitudinal vibrating frame 4 can break the adhesive bond of the adhesive. The synchronously rotating cutter group and screen leaf quickly complete the crushing and screening. The efficiency is improved by more than 50% compared with the traditional step-by-step processing device. Moreover, the sealing structure reduces the dust concentration in the working environment to below 8mg / m³, which meets the environmental protection requirements.

[0070] The cutter shaft 10 meshes with the bevel tooth surface of the fixed tooth ring 9 through the driven bevel tooth, and swings back and forth under the action of the first torsion spring 11, driving the moving cutter 16 to apply alternating shearing force and impact force to the waste material. The coaxial and opposite rotation of the positive cutter cylinder 6 and the negative cutter cylinder 7 further expands the movement trajectory of the cutter, forming a "saw-like" tearing effect, which is especially suitable for the extensible material of vehicle film waste, avoiding the stretching and entanglement of the film due to unidirectional cutting.

[0071] The "point-to-surface" alternating contact method of the oscillating blade applies multi-directional shear force to the long fiber waste, physically destroying the continuous fiber structure and significantly reducing the probability of film entanglement with the blade shaft 10.

[0072] The reciprocating motion of the cutting edge disperses the wear area of ​​the cutting edge. Combined with the toothless intermittent design of the fixed tooth ring 9, it reduces the ineffective friction between the cutting edge and the waste material, extending the life of the cutting edge by 2 times compared to traditional fixed blades.

[0073] It also includes a sleeve 42 and a rotating seat 38 rotatably sleeved on the positive cutter cylinder 6. A set of connecting plates is installed between the sleeve 42, the rotating seat 38, and the negative cutter cylinder 7. A passive bevel gear is installed on both the rotating seat 38 and the positive cutter cylinder 6. A steering shaft 39 is rotatably installed on the longitudinal vibration frame 4. A steering bevel gear is installed on the steering shaft 39. Both passive bevel gears are connected to the steering bevel gear. The two passive bevel gears are respectively set on both sides of the steering bevel gear. A belt shaft 40 is rotatably installed on the longitudinal vibration frame 4. A fourth synchronous belt is connected to the belt shaft 40 and the lifting shaft 33. Both the belt shaft 40 and the lifting shaft 33 are equipped with linkage gears 41. The two linkage gears 41 mesh with each other.

[0074] The sleeve 42 is a hollow cylindrical structure with openings at both ends. A sealing ring cotton 43 is installed between the sleeve 42 and the tank body 1. The sealing ring cotton 43 is made of sponge material.

[0075] Sleeve 42 and rotating seat 38 are connected to reverse blade cylinder 7 via connecting plate, forming a dynamic sealing structure. Combined with a sponge-material sealing ring 43, this effectively prevents waste powder from spilling out. The silicone material collecting cover 14 combines flexibility and high-temperature resistance, adapting to the hot air environment inside tank 1 and ensuring centralized collection of crushed waste particles. This sealing solution solves the dust pollution problem of traditional open-type recycling devices, meets the environmental protection requirements of vehicle-mounted film production workshops, and reduces cleaning and maintenance costs.

[0076] The bottom of the tank 1 is provided with a material collection area 12. Multiple sets of fixed blades 13 are installed on the reverse blade cylinder 7 at the position corresponding to the material collection area 12. A material collection cover 14 is installed at the bottom of the material collection area 12. The material collection cover 14 is fixedly connected to the lifting cylinder 5. The material collection cover 14 is made of silicone.

[0077] The silicone material collecting cover 14 elastically fits the bottom of the collecting area 12 and collects the crushed vehicle film waste with the vibration of the lifting cylinder 5. Its flexible structure can buffer the impact of particles and prevent sharp-angled vehicle film waste from puncturing the equipment. This design addresses the impurities such as metal shavings and hard particles that may be contained in the vehicle film waste. By using a flexible collecting structure, it avoids the wear problem of traditional rigid collecting hoppers, extending the service life of the device to more than 5,000 hours. Compared with metal collecting components, the maintenance cycle is extended by 3 times, which significantly reduces the maintenance cost in industrial applications.

[0078] The top of the tank body 1 is provided with a heat supply component 15 for supplying heat to the inner cavity of the tank body 1;

[0079] The heat supply component 15 includes a duct installed on the tank body 1. The bottom end of the duct is connected to the inner cavity of the tank body 1. A filter element and an electric heating fan are installed on the inner wall of the duct from top to bottom. A temperature probe 44 for monitoring the temperature of the inner cavity of the tank body 1 is installed on the tank body 1. A central control host 45 is installed on the end face of the tank body 1. The data terminal of the temperature probe 44 is connected to the central control host 45.

[0080] The hot air blower delivers hot air into the tank through the air duct. The filter element filters impurities in the air. The heating element 15 controls the hot air temperature at 60℃-120℃ through the electric hot air blower. The hot air penetrates the waste layer, reduces the intermolecular forces of the polymer chains, and makes the film more brittle. The softened waste has significantly reduced resistance when sheared by the blade assembly, and the crushed particle size is more uniform. The hot air improves the fluidity of the waste and reduces the residual rate of waste on the blade edge through the wind force.

[0081] Working principle and usage process of this invention:

[0082] Servo motor 17 drives eccentric shaft 18 to rotate via first synchronous belt. Eccentric wheel 20 cooperates with roller 21 of transverse vibrating table 2. Under the action of reset elastic element 22 and guide rail frame, transverse vibrating table 2 causes horizontal reciprocating vibration, driving moving blade 16 and fixed blade 13 to move horizontally, realizing rotary cutting, transverse cutting and shaking off entanglement of waste material. Eccentric shaft 18 drives first incomplete gear 23 and second incomplete gear 24 to alternately mesh with differential gear 29. Utilizing the gear radius and height difference and second torsion spring 28, large circular shaft 25 drives reversing shaft 3 to periodically rotate forward and backward. At the same time, through intermittent transmission in the power interruption zone, tool jamming is avoided and dynamic changes in shearing force are realized. Reversing shaft 3 drives lifting shaft 33 to rotate via second spline groove. Spiral screen blade 34 conveys waste material from bottom to top. Screen hole 35 screens waste material. Qualified particles enter crushing zone through discharge port 36, while unqualified particles are crushed. The particles are circulated and screened through the return port 37. The forward cutter cylinder 6 and the reverse cutter cylinder 7 rotate coaxially in opposite directions. The driven conical teeth on the cutter shaft 10 oscillate back and forth along the conical tooth surface of the fixed tooth ring 9, so that the moving cutter 16 performs "impact-shear" compound crushing on the waste. The fixed cutter 13 at the bottom of the reverse cutter cylinder 7 performs secondary crushing on the falling material. When the longitudinal vibrating frame 4 moves vertically, the steering shaft 39 drives the forward cutter cylinder 6 and the reverse cutter cylinder 7 to rotate synchronously. The belt shaft 40 drives the lifting shaft 33 to rotate, forming a "vibration-rotation" linkage. The electric hot air blower of the heat supply component 15 controls the hot air temperature at 60℃-120℃ and sends it into the tank to soften the waste for easy crushing. The temperature probe 44 monitors the temperature and feeds it back to the central control host 45. Finally, the crushed waste particles are collected in the collection area 12 by the silicone collection cover 14. The whole process realizes the recycling, lifting, screening, crushing and heat softening treatment of waste, improving recycling efficiency and quality.

[0083] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0084] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste recycling device for vehicle-mounted film production, comprising a tank, characterized in that: The top of the tank is equipped with a multi-tooth intermittent transmission system. The multi-tooth intermittent transmission system is connected to a horizontal vibrating table that can move back and forth in the horizontal direction and a reversing shaft that can reciprocate in both forward and reverse directions within a set period. The horizontal vibrating table is equipped with a longitudinal vibrating frame that can move back and forth in the vertical direction and is driven by the reversing shaft. The reciprocating stroke of the longitudinal vibrating frame is periodically adjustable. The bottom surface of the longitudinal vibrating frame is equipped with a lifting cylinder. The lifting cylinder is equipped with a screening and lifting system that circulates and lifts waste material from bottom to top and screens the waste material. The lifting cylinder is fitted with a positive knife cylinder and a negative knife cylinder that rotate from top to bottom. The positive knife cylinder and the negative knife cylinder rotate in opposite directions on the same axis. Both the positive knife cylinder and the negative knife cylinder are equipped with multiple knife assemblies. The tool assembly includes a tool holder and a fixed tooth ring. Both the forward and reverse tool barrels are fixedly connected to the tool holder at their corresponding positions. A tool shaft that can reciprocate within a set angle is rotatably mounted on the tool holder. A first torsion spring is fixedly installed at the rotatable connection between the tool shaft and the tool holder. A driven bevel tooth is installed at the tail end of the tool shaft. The fixed tooth ring is fixedly mounted on the lifting cylinder. The fixed tooth ring is provided with multiple bevel tooth surfaces and multiple toothless surfaces. The bevel tooth surfaces are adapted to and connected with the driven bevel tooth. A moving cutting edge is installed on the tool shaft. The bottom of the tank is provided with a material collection area. Multiple sets of fixed blades are installed on the reverse blade cylinder at the position corresponding to the material collection area. A material collection cover is installed at the bottom of the material collection area. The material collection cover is fixedly connected to the lifting cylinder. The top of the tank is provided with a heat supply component that supplies heat to the inner cavity of the tank. The multi-tooth intermittent transmission system includes a servo motor mounted on the tank, an eccentric shaft rotatably connected to the tank, and a bracket fixedly mounted inside the tank. The output shaft of the servo motor is connected to the eccentric shaft via a first synchronous belt. An eccentric wheel is mounted at the bottom of the eccentric shaft. A roller is rotatably mounted on the transverse vibration table. The outer contour of the eccentric wheel rolls in contact with the outer contour of the roller. A reset elastic element that is limited by the tank is mounted on the side of the transverse vibration table. A guide rail frame that is slidably connected to the transverse vibration table is fixedly mounted on the inner wall of the tank. The multi-tooth intermittent transmission system further includes a first incomplete gear and a second incomplete gear mounted on an eccentric shaft. Two symmetrically arranged power interruption zones are provided between the first incomplete gear and the second incomplete gear. A large round shaft, a small round shaft, and a spline shaft are rotatably mounted on the bracket. A second torsion spring is fixedly installed at the rotatable connection between the large round shaft and the bracket. Two differential gears are mounted on the large round shaft, and the two differential gears are respectively adapted and connected to the first incomplete gear and the second incomplete gear. A second synchronous belt is connected between the large round shaft and the small round shaft. A first bevel gear is mounted on both the small round shaft and the spline shaft, and the two first bevel gears mesh with each other. A hollow bushing is rotatably mounted on the transverse vibration table. A first spline groove with open ends and slidably connected to the spline shaft is fixedly opened inside the hollow bushing. The cross-section of the first spline groove and the spline shaft are both regular hexagonal. The reversing shaft is rotatably mounted on the bracket. A second bevel gear is mounted on both the hollow bushing and the reversing shaft. The first incomplete gear and the second incomplete gear are symmetrically arranged on the eccentric shaft. The first incomplete gear and the second incomplete gear have different heights in the vertical direction. The central angles corresponding to the first incomplete gear and the second incomplete gear are both 120°. The central angles corresponding to the two power interruption zones are both 60°. The radii of the first incomplete gear and the second incomplete gear are different. The radii of the two differential gears are also different. The multi-tooth intermittent transmission system also includes a reciprocating lead screw that is rotatably connected to the support and is vertically arranged. A third torsion spring is fixedly installed at the rotatable connection between the reciprocating lead screw and the support. A third synchronous belt is driven between the reciprocating lead screw and the reversing shaft. The reciprocating lead screw is driven by the longitudinal vibration frame.

2. The waste recycling device for vehicle-mounted film production according to claim 1, characterized in that: The material screening and lifting system includes a lifting shaft rotatably installed inside the lifting cylinder. The top of the lifting shaft is fixedly provided with a second spline groove that has a top opening and is slidably connected to a reversing shaft. The cross-section of the second spline groove and the reversing shaft are both regular hexagonal. A spiral screen blade is installed on the lifting shaft. The spiral screen blade is in contact with the lifting cylinder. Vertically arranged screen holes are evenly distributed on the spiral screen blade. A set of discharge ports arranged in a circumferential array is provided at the upper part of the lifting cylinder. A set of return ports arranged in a circumferential array is provided at the lower part of the lifting cylinder and at the position corresponding to the material collection area. An open leakage section is provided on the positive cutter cylinder at the position corresponding to the discharge port. A feed nozzle is connected to the tank body.

3. The waste recycling device for vehicle-mounted film production according to claim 1, characterized in that: It also includes a sleeve and a rotating seat rotatably fitted onto the positive cutter cylinder. A set of connecting plates is installed between the sleeve, the rotating seat, and the negative cutter cylinder. A driven bevel gear is installed on both the rotating seat and the positive cutter cylinder. A steering shaft is rotatably installed on the longitudinal vibration frame. A steering bevel gear is installed on the steering shaft. Both driven bevel gears are connected to the steering bevel gear in a transmission manner. The two driven bevel gears are respectively located on both sides of the steering bevel gear. A belt shaft is rotatably installed on the longitudinal vibration frame. A fourth synchronous belt is connected to the lifting shaft in a transmission manner. A linkage gear is installed on both the belt shaft and the lifting shaft. The two linkage gears mesh with each other.

4. The waste recycling device for vehicle-mounted film production according to claim 3, characterized in that: The sleeve is a hollow cylindrical structure with openings at both ends. A sealing ring cotton is installed between the sleeve and the tank body. The sealing ring cotton is made of sponge material, and the material collection cover is made of silicone material.

5. A waste recycling device for vehicle-mounted film production according to claim 3, characterized in that: The heat delivery component includes a duct installed on the tank body, the bottom end of the duct being connected to the inner cavity of the tank body, a filter element and an electric heating fan being installed sequentially from top to bottom on the inner wall of the duct body, a temperature probe for monitoring the temperature of the inner cavity of the tank body being installed on the tank body, a central control host being installed on the end face of the tank body, and the data terminal of the temperature probe being connected to the central control host.

6. The waste recycling device for vehicle-mounted film production according to claim 1, characterized in that: The number of conical tooth surfaces and toothless surfaces is the same, the central angles corresponding to the conical tooth surfaces and toothless surfaces are the same, and the multiple conical tooth surfaces and multiple toothless surfaces are arranged in pairs on the fixed tooth ring.

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