A PVC film leveling device

Abstract

A PVC film leveling device includes a base, a housing, guide rollers, conveying rollers, a placement structure, a leveling structure, a heating structure, a drying structure, and a conveying structure. The placement structure includes a base platform and a support plate. The base platform has a first cavity and a second cavity. Two lifting components are installed in the first cavity. Each lifting component includes a first lifting rod, a second lifting rod, a first rack, a second rack, a fixing ring, a spring, and an intermediate gear. A linkage rod and a foot-operated drive component are installed in the second cavity. The linkage rod is fixed between the bottom ends of the two second lifting rods. The foot-operated drive component moves the linkage rod upwards. This invention allows the leveling rollers and the support plate to separate via a foot-operated drive component, enabling faster, more convenient, and less labor-intensive passage of the PVC film between the leveling rollers and the placement plate, thus improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of PVC film processing equipment, specifically a PVC film leveling device. Background Technology

[0002] PVC film is made from polyvinyl chloride resin and other modifiers such as plasticizers and stabilizers through calendering or blow molding processes. The surface of PVC film may have some unevenness, which can easily affect the subsequent processing results. Therefore, it needs to be leveled, and thus a PVC film leveling device is used.

[0003] Chinese Patent CN222271255U discloses a PVC film leveling device, including a leveling assembly and a feed inlet. The leveling assembly includes a base, a housing, guide rollers, a vent, a first housing, and a conveying structure placement plate. This invention incorporates a heating structure. A heating wire connected to a power source heats the interior of a first fixed frame, activating a drive motor. The drive motor rotates a first transmission wheel, which in turn drives a second transmission wheel via a second transmission belt. The first transmission wheel, via a transmission shaft, drives a first fan, which blows heat onto the PVC film below. Once heated, the PVC film is flattened by the leveling structure. A second transmission wheel, via a connecting shaft, drives a second fan, which then dries the flattened PVC film. This device enhances the leveling effect and improves its working efficiency.

[0004] Although this utility model does not describe in detail how the PVC film is passed between the leveling roller and the placement plate, those skilled in the art can understand from the appendix of this utility model... Figure 2 Appendix Figure 6The instruction manual describes a leveling structure 8 as including a support plate 801, a movable rod 802, a limiting plate 803, a return spring 804, a roller seat 805, and a leveling roller 806. The support plate 801 is fixed at the center of the top of the housing 102. Movable rods 802 are evenly distributed throughout the support plate 801. Limiting plates 803 are fixed to the top of each movable rod 802, and roller seats 805 are fixed to the bottom of each movable rod 802. A leveling roller 806 is installed inside the roller seat 805. The outer side of the movable rod 802 below the support plate 801... Each component is equipped with a return spring 804. The movable rod 802 and the roller seat 805 form a telescopic structure through the return spring 804. Both ends of the leveling roller 806 extend into the interior of the roller seat 805 and form a rotating structure with the roller seat 805. The bottom end of the leveling roller 806 contacts the top end of the placement plate 107. Therefore, because the bottom end of the leveling roller in this invention contacts the top end of the placement plate, when the PVC film needs to be passed between the leveling roller and the placement plate, the operator needs to pull the movable rod upward with one hand, thereby moving the roller seat upward. When the roller seat moves upward, it compresses the return spring and moves the leveling roller upward. After the leveling roller moves upward, it separates from the placement plate, creating a sufficient gap between the leveling roller and the placement plate. Then, the operator needs to maintain the state of pulling the movable rod while using the other hand to pass the PVC film between the leveling roller and the placement plate. Finally, the movable rod is released, and under the rebound force of the return spring, the leveling roller moves downward to reset. This method of installing PVC film is time-consuming and labor-intensive, reducing work efficiency.

[0005] Therefore, this utility model proposes a technical solution to solve the problem that the process of passing PVC film between the leveling roller and the placement plate is inconvenient, time-consuming, labor-intensive, and affects work efficiency. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a PVC film leveling device, which aims to achieve the technical effect of passing the PVC film through the leveling roller and the support plate more quickly and conveniently, thereby improving work efficiency.

[0007] A PVC film leveling device includes a base, a housing, guide rollers, conveying rollers, a placement structure, a leveling structure, a heating structure, a drying structure, and a conveying structure. The placement structure includes a base platform and a support plate. The base platform has a first cavity and a second cavity. Two symmetrically arranged lifting components are installed in the first cavity. Each lifting component includes a first lifting rod, a second lifting rod, a spring, and an intermediate gear. The top end of the first lifting rod is located above the base platform and is fixedly connected to the support plate. The bottom end of the first lifting rod slides into the first cavity and is fixed with a first tooth. The second lifting rod has its top end located inside the first cavity and is fixed with a second rack. The bottom end of the second lifting rod is slidably connected into the second cavity and is fixedly fitted with a fixing ring. The spring is fitted outside the second lifting rod and fixed between the fixing ring and the inner top wall of the second cavity. The intermediate gear is rotatably connected inside the first cavity and meshes between the first rack and the second rack. A linkage rod and a foot-operated drive component are installed inside the second cavity. The linkage rod is fixed between the bottom ends of the two second lifting rods, and the foot-operated drive component is used to drive the linkage rod to move upward.

[0008] By employing the above technical solution, when the PVC film needs to be passed between the leveling roller and the placement plate, the worker steps down on the foot-operated drive unit, which in turn moves the linkage rod upward. The linkage rod moves the fixed ring upward, compressing the spring and creating a downward rebound force. Simultaneously, the linkage rod also moves the two second lifting rods upward. The second racks on the second lifting rods move upward accordingly. Since the intermediate gear meshes between the first and second racks, the upward movement of the second rack drives the intermediate gear to rotate. The rotation of the intermediate gear, in turn, moves the first rack downward. The first rack moves the first lifting rod downward. The first lifting rod causes the support plate to descend. The distance between the support plate and the placement plate increases. At this point, the worker can easily pass the PVC film between the leveling roller and the placement plate. After the film is threaded through the rollers, the foot pedal is released. Under the spring's rebound force, the retaining ring moves the second lifting rod downwards. The second lifting rod, through the second rack, intermediate gear, and first rack, moves the first lifting rod upwards. The first lifting rod then raises the support plate, causing it to engage with the placement plate to clamp the PVC film for subsequent leveling operations. This invention allows for faster and more convenient threading of the PVC film between the leveling rollers and the placement plate, improving work efficiency.

[0009] A further feature of this invention is that a first groove and a second groove are respectively provided at the bottom end of the first rack and the top end of the second rack. A first vertical rod and a second vertical rod are respectively fixed on the inner bottom wall and the inner top wall of the first cavity. The first rack is slidably sleeved on the outside of the first vertical rod through the first groove, and the second rack is slidably sleeved on the outside of the second vertical rod through the second groove.

[0010] By adopting the above technical solution, the first rack moves up and down along the first vertical rod, improving the stability of the first rack and the first lifting rod during their up and down movements. The second rack moves up and down along the second vertical rod, improving the stability of the second rack and the second lifting rod during their up and down movements.

[0011] Further features of this invention: The heating structure includes a first fixed frame, a first fan, a heating wire, and a first drive shaft; the drying structure includes a second fixed frame, a second fan, and a second drive shaft; the conveying structure is used to drive the first drive shaft, the second drive shaft, and the conveying roller to rotate simultaneously; the conveying structure includes a first support, a second support, a first drive wheel, a second drive wheel, a third drive wheel, a fourth drive wheel, a first gearbox, a second gearbox, and a motor; the first gearbox and the second gearbox are both fixed to the top of the housing; the top ends of the first drive shaft and the second drive shaft respectively penetrate into the interior of the first gearbox and the second gearbox, and are respectively fixed with a first driven gear and a second driven gear; the first support and the second support are both fixed to the top of the rear side wall of the housing; the first support and the first... A first rotating shaft is rotatably connected between gearboxes via bearings. One end of the first rotating shaft passes through the first gearbox and is fixedly fitted with a first driving gear that meshes with a first driven gear. A first transmission wheel is fixedly sleeved on the outside of the first rotating shaft. The motor is mounted on a first bracket and is used to drive the first rotating shaft to rotate. A second rotating shaft is rotatably connected between the second bracket and the second gearbox via bearings. One end of the second rotating shaft passes through the second gearbox and is fixedly fitted with a second driving gear that meshes with a second driven gear. The second and third transmission wheels are both fixedly sleeved on the outside of the second rotating shaft. A fourth transmission wheel is connected to one end of a conveyor roller. A first transmission belt is drivingly connected between the first and second transmission wheels, and a second transmission belt is drivingly connected between the third and fourth transmission wheels.

[0012] By adopting the above technical solution, the motor is started, driving the first rotating shaft to rotate. The first transmission wheel on the first rotating shaft rotates accordingly, transmitting power to the second transmission wheel via the first transmission belt. The second transmission wheel drives the second rotating shaft to rotate. The third transmission wheel on the second rotating shaft rotates synchronously, transmitting power to the fourth transmission wheel via the second transmission belt. The fourth transmission wheel drives the conveyor roller to rotate, thus realizing the conveyor roller's transport of the PVC film. Simultaneously, the rotation of the first rotating shaft drives the first driving gear to rotate, which in turn drives the first driven gear, thereby driving the first transmission shaft to rotate. The first fan on the first transmission shaft starts working, working with the heating wire to heat and level the passing PVC film. The rotation of the second rotating shaft drives the second driving gear to rotate, which in turn drives the second driven gear, thereby driving the second transmission shaft to rotate. The second fan on the second transmission shaft starts working, drying the heated and leveled PVC film.

[0013] A further feature of this invention is that the top of the housing is fixed with several bearing seats that are sleeved on the outside of the first and second rotating shafts.

[0014] By adopting the above technical solution and the setting of the bearing housing, the stability of the first and second rotating shafts is improved.

[0015] A further feature of this invention is that a mounting base is fixed to the top of the base, a speed reducer is fixed to the top of the mounting base, the fourth transmission wheel is fixedly sleeved on the input shaft of the speed reducer, and the output shaft of the speed reducer is fixedly connected to the conveying roller via a coupling.

[0016] By adopting the above technical solution, the speed reducer can be adjusted to regulate the rotational speed of the conveyor rollers, controlling the conveying speed of the PVC film according to actual processing requirements. When a slower conveying speed is needed to ensure a smoothing effect, the speed reducer can decrease the rotational speed transmitted to the conveyor rollers by the fourth drive wheel. When it is necessary to increase processing efficiency and speed up the conveying speed, the speed reducer can also be adjusted accordingly to allow the conveyor rollers to run at a suitable, faster speed, enhancing the equipment's adaptability to different processing scenarios. Moreover, the speed reducer has a compact structure and smooth transmission, ensuring that the conveyor rollers maintain a stable rotational speed during long-term operation, reducing the adverse effects of speed fluctuations on the smoothing quality of the PVC film, and further improving the overall processing stability and reliability.

[0017] Further features of this invention: the front side of the base platform has an opening communicating with the second cavity; the foot-operated drive component includes a rotating frame and a support rod; the support rod is fixedly connected between the left and right side walls of the second cavity; two rotating seats are fixed at the bottom of the rotating frame; both rotating seats are rotatably sleeved on the outside of the support rod via bearings; the rear end of the rotating frame abuts against the lower part of the linkage rod; the front end of the rotating frame extends upward at an angle and passes through the opening into the second cavity.

[0018] By adopting the above technical solution, when it is necessary to move the linkage rod upward by stepping on the driving component, the worker steps down on the front end of the rotating frame. The rotating frame rotates on the support rod via the rotating seat, thereby causing the rear end of the rotating frame to tilt upward, which in turn drives the linkage rod that is in contact with it to move upward.

[0019] A further feature of this invention is that the distance between the rear end of the rotating frame and the rotating seat is less than the distance between its front end and the rotating seat.

[0020] By adopting the above technical solution, the rotating frame is equivalent to a lever with a support rod as the fulcrum. According to the lever principle, if the distance of the effort arm from the fulcrum to the point of application of the effort is greater than the distance of the resistance arm from the fulcrum to the point of application of the resistance, then the required force will be less than the resistance, achieving a labor-saving effect. Therefore, it can save labor, allowing workers to more easily step down on the front end of the rotating frame.

[0021] Further features of this invention: A groove is provided on the front side of the base platform, and longitudinal grooves are provided on both the left and right sides of the groove. A mounting groove is provided on the front side wall of the second cavity, located directly above the longitudinal grooves. Through holes connect the mounting groove to both longitudinal grooves. The foot-operated drive component includes a pedal and two pulley sets, each corresponding to one of the two longitudinal grooves. Each pulley set includes a first mounting frame, a second mounting frame, a third mounting frame, a movable pulley, a first fixed pulley, a second fixed pulley, and a pull rope. The first mounting frame is fixed to the top of the linkage rod, and the movable pulley is rotatably connected to the first mounting frame via a pin. The second mounting bracket is fixed to the inner top wall of the second cavity and corresponds to the first mounting bracket. The first fixed pulley is rotatably connected to the second mounting bracket via a pin. The third mounting bracket is fixed to the inner top wall of the mounting groove and corresponds to the second mounting bracket. The second fixed pulley is rotatably connected to the third mounting bracket via a pin. One end of the pull rope is located in the longitudinal groove and is fixed with a slider that slides up and down along the longitudinal groove. The other end of the pull rope passes through a through hole into the mounting groove and passes around the second fixed pulley, the first fixed pulley, and the movable pulley in sequence, and is fixed to the bottom end of the second mounting bracket. The pedal is located in the groove and is fixedly connected between the two sliders.

[0022] By adopting the above technical solution, when it is necessary to move the linkage rod upward by stepping on the drive component, the worker inserts their toes into the groove and steps down on the pedal. The downward movement of the pedal causes the slider to slide down along the longitudinal groove. The downward movement of the slider pulls the pull rope, which successively passes over the second fixed pulley, the first fixed pulley, and the movable pulley. Since the other end of the pull rope is fixed to the bottom of the second mounting bracket, the movable pulley moves upward under the pull of the rope, thereby driving the first mounting bracket to move upward. The first mounting bracket is fixed to the top of the linkage rod, thus driving the linkage rod to move upward. Furthermore, the design of the first mounting bracket and the movable pulley saves effort, allowing the worker to step down on the pedal with less effort.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] A PVC film leveling device is disclosed. This utility model allows the leveling roller and the support plate to be separated by a foot-operated drive component, which enables the PVC film to pass between the leveling roller and the placement plate more quickly, conveniently and labor-savingly, thus improving work efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1;

[0026] Figure 2 This is a sectional view from the front view direction of Embodiment 1;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a sectional view of the placement structure in Embodiment 1 from the side;

[0029] Figure 5 This is a partial structural diagram of the foot-operated drive component, linkage rod, and two second lifting rods in Embodiment 1;

[0030] Figure 6 This is a top view of Embodiment 1;

[0031] Figure 7 This is a sectional view from the front view direction of Embodiment 2;

[0032] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0033] Figure 9 This is a sectional view of the base platform in Embodiment 2 from the side.

[0034] Figure 10 This is a sectional view of the base platform in Embodiment 2 from the front view direction;

[0035] Figure 11 This is a partial structural diagram of the linkage rod, two first mounting brackets, two movable pulleys, and two second lifting rods in Embodiment 2;

[0036] Reference numerals: 1. Base; 2. Housing; 3. Guide roller; 4. Conveying roller; 5. Leveling structure; 6. Ventilation port; 7. Feed inlet; 8. Discharge outlet; 9. First fixed frame; 10. First fan; 11. Heating wire; 12. First drive shaft; 13. Second fixed frame; 14. Second fan; 15. Second drive shaft; 16. First bracket; 17. Second bracket; 18. First drive wheel; 19. Second drive wheel; 20. Third drive wheel; 21. Fourth drive wheel; 22. First gearbox; 23. Second gearbox; 24. Mounting base; 25. Reducer; 26. Motor; 27. First driven gear; 28. Second driven gear; 29. ​​First rotating shaft; 30. First driving gear; 31. Second rotating shaft; 32. Second driving gear; 33. First drive shaft 34. Second transmission belt; 35. Bearing seat; 36. Base platform; 37. Support plate; 38. First cavity; 39. Second cavity; 40. First lifting rod; 41. Second lifting rod; 42. First vertical rod; 43. Second vertical rod; 44. Spring; 45. Intermediate gear; 46. First rack; 47. First slide groove; 48. Second rack; 49. Second slide groove; 50. Fixed ring; 51. Linkage rod; 52. Opening; 53. Rotating frame; 54. Support rod; 55. Rotating seat; 56. Groove; 57. Longitudinal groove; 58. Mounting groove; 59. Through hole; 60. Foot pedal; 61. First mounting bracket; 62. Second mounting bracket; 63. Third mounting bracket; 64. Movable pulley; 65. First fixed pulley; 66. Second fixed pulley; 67. Pull rope; 68. Slider. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example 1:

[0039] A PVC film leveling device, such as Figures 1-6 As shown, it includes a base 1, a box 2, a placement structure, a leveling structure 5, a heating structure, a drying structure, and a conveying structure.

[0040] The housing 2 is bolted to the top of the base 1. A door is provided on the front of the housing 2. Ventilation openings 6 are provided at the top of both the left and right sides of the housing 2. A feed inlet 7 and a discharge outlet 8 are respectively located in the middle of the left and right sides of the housing 2. A guide roller 3 corresponding to the feed inlet 7 is installed on the left outer wall of the housing 2. A conveying roller 4 corresponding to the discharge outlet 8 is installed on the right outer wall of the housing 2. Both the guide roller 3 and the conveying roller 4 are mature existing technologies, and their structure and installation method will not be described in detail in this embodiment.

[0041] The heating structure includes a first fixed frame 9, a first fan 10, a heating wire 11, and a first drive shaft 12. The drying structure includes a second fixed frame 13, a second fan 14, and a second drive shaft 15. Both the heating and drying structures can be found in the description of a PVC film leveling device in Chinese Patent No. CN222271255U, and will not be described in detail in this embodiment.

[0042] The conveying structure drives the first drive shaft 12, the second drive shaft, and the conveying roller 4 to rotate simultaneously. The conveying structure includes a first support 16, a second support 17, a first drive wheel 18, a second drive wheel 19, a third drive wheel 20, a fourth drive wheel 21, a first gearbox 22, a second gearbox 23, a mounting base 24, a reducer 25, and a motor 26. Both the first gearbox 22 and the second gearbox 23 are bolted to the top of the housing 2. The top ends of the first drive shaft 12 and the second drive shaft 15 respectively pass into the interiors of the first gearbox 22 and the second gearbox 23, and are respectively fixed with a first driven gear 27 and a second driven gear 28 by set screws. The first support 16 and the second support 17 are both fixed to the top of the rear side wall of the housing 2. A first rotating shaft 29 is rotatably connected between the first support 16 and the first gearbox 22 via bearings. One end of the first rotating shaft 29 passes into the first gearbox 22 and is fixed with a first driving gear 30 that meshes with the first driven gear 27. The first drive wheel 18 is fixedly sleeved on the outside of the first rotating shaft 29 by set screws. The motor 26 is bolted to the first bracket 16 to drive the first rotating shaft 29 to rotate. The second bracket 17 and the second gearbox 23 are rotatably connected to the second rotating shaft 31 by bearings. One end of the second rotating shaft 31 passes into the second gearbox 23 and is fixed with the second driving gear 32, which meshes with the second driven gear 28, by set screws. The second drive wheel 19 and the third drive wheel 20 are both fixedly sleeved on the outside of the second rotating shaft 31 by set screws. The mounting base 24 is fixed to the top of the base 1 by bolts. The reducer 25 is bolted to the top of the mounting base 24. The fourth drive wheel 21 is fixedly sleeved on the input shaft of the reducer 25 by set screws. The output shaft of the reducer 25 is fixedly connected to the conveying roller 4 by a coupling. The first drive wheel 18 and the second drive wheel 19 are connected by a first drive belt 33. The third drive wheel 20 and the fourth drive wheel 21 are connected by a second drive belt 34. The top of the housing 2 is also fixed with several bearing seats 35 that are rotatably sleeved on the outside of the first rotating shaft 29 and the second rotating shaft 31 by bolts. The setting of the bearing seats 35 improves the stability of the first rotating shaft 29 and the second rotating shaft 31.

[0043] It is worth noting that the first transmission wheel 18, the second transmission wheel 19, the third transmission wheel 20, the fourth transmission wheel 21, the first transmission belt 33, and the second transmission belt 34 in this embodiment are all mature existing technologies. In this embodiment, the first transmission wheel 18, the second transmission wheel 19, the third transmission wheel 20, and the fourth transmission wheel 21 can all be sprockets, and the corresponding first transmission belt 33 and second transmission belt 34 can be chains. Those skilled in the art have the ability and motivation to perform routine maintenance and subsequent replacement of sprockets and chains.

[0044] The leveling structure 5 can be referred to in the relevant description of a PVC film leveling device in Chinese Patent No. CN222271255U, and will not be described in detail in this embodiment.

[0045] The placement structure includes a base platform 36 and a support plate 37. The base platform 36 is fixed to the top of the base 1 and is directly below the leveling structure 5. The interior of the base platform 36 has a first cavity 38 and a second cavity 39 arranged sequentially from top to bottom. Two symmetrically arranged lifting components are installed in the first cavity 38. Each lifting component includes a first lifting rod 40, a second lifting rod 41, a first vertical rod 42, a second vertical rod 43, a spring 44, and an intermediate gear 45. The first vertical rod 42 and the second vertical rod 43 are welded and fixed to the inner bottom wall and inner top wall of the first cavity 38, respectively. The first lifting rod 40 extends vertically. The top of the first lifting rod 40 is located above the base platform 36 and is fixedly connected to the support plate 37 by bolts. The bottom end of the first lifting rod 40 slides into the first cavity 38 and is welded and fixed to a first rack 46. The bottom end of the first rack 46 has a first sliding groove 47. The first rack 46 slides through the first sliding groove 47 and is fitted onto the outside of the first vertical rod 42. The top end of the second lifting rod 41 is located inside the first cavity 38, and a second rack 48 is welded and fixed thereon. A second groove 49 is formed at the top end of the second rack 48. The second rack 48 is slidably fitted onto the outside of the second vertical rod 43 via the second groove 49. The bottom end of the second lifting rod 41 is slidably inserted into the second cavity 39, and a fixing ring 50 is integrally formed on its exterior. A spring 44 is fitted onto the outside of the second lifting rod 41 and welded and fixed between the fixing ring 50 and the inner top wall of the second cavity 39. An intermediate gear 45 is rotatably connected between the front and rear side walls of the first cavity 38 via a pin shaft and meshes between the first rack 46 and the second rack 48. A linkage rod 51 and a foot-operated drive component are installed inside the second cavity 39. The linkage rod 51 is welded and fixed between the bottom ends of the two second lifting rods 41. The foot-operated drive component is used to move the linkage rod 51 upwards.

[0046] An opening 52 communicating with the second cavity 39 is provided on the front side of the base 36. The foot-operated drive component includes a rotating frame 53 and a support rod 54. The support rod 54 is fixedly connected to the left and right cavity walls of the second cavity 39 by bolts. Two rotating seats 55 are fixed to the bottom end of the rotating frame 53 by bolts. Both rotating seats 55 are rotatably sleeved on the outside of the support rod 54 via bearings. The rear end of the rotating frame 53 abuts against the lower part of the linkage rod 51. The front end of the rotating frame 53 extends obliquely upward and passes through the opening 52 into the second cavity 39. The distance between the rear end of the rotating frame 53 and the rotating seat 55 is less than the distance between its front end and the rotating seat 55. In this embodiment, a limiting ring that fits against both sides of the rotating seat 55 can be fixedly sleeved on the outside of the support rod 54, thereby improving the connection stability between the rotating seat 55 and the support rod 54.

[0047] Working principle:

[0048] When the PVC film needs to be passed between the leveling roller and the placement plate, the worker steps down on the front end of the rotating frame 53. The rotating frame 53 rotates on the support rod 54 via the rotating seat 55, causing the rear end of the rotating frame 53 to tilt upwards, which in turn drives the linkage rod 51 to move upwards. The linkage rod 51 drives the fixed ring 50 to move upwards, and the spring 44 is compressed, creating a downward rebound force. At the same time, the linkage rod 51 also drives the two second lifting rods 41 to move upwards. The second rack 48 on the second lifting rod 41 moves upwards accordingly. Since the intermediate gear 45 meshes between the first rack 46 and the second rack 48, the upward movement of the second rack 48 drives the intermediate gear 45 to rotate. The rotation of the intermediate gear 45 then drives the first rack 46 to move downwards. The first rack 46 drives the first lifting rod 40 to move downwards. The first lifting rod 40 drives the support plate 37 to descend. The distance between the support plate 37 and the placement plate increases. At this point, the worker can easily pass the PVC film between the leveling roller and the placement plate. After the film is inserted, release the foot drive component. Under the rebound force of the spring 44, the fixing ring 50 drives the second lifting rod 41 to move downward. The second lifting rod 41 drives the first lifting rod 40 to move upward through the second rack 48, the intermediate gear 45 and the first rack 46. The first lifting rod 40 drives the support plate 37 to rise, so that the support plate 37 cooperates with the placement plate to clamp the PVC film.

[0049] Next, motor 26 is started, driving the first shaft 29 to rotate. The first transmission wheel 18 on the first shaft 29 rotates accordingly, transmitting power to the second transmission wheel 19 via the first transmission belt 33. The second transmission wheel 19 drives the second shaft 31 to rotate. The third transmission wheel 20 on the second shaft 31 rotates synchronously, transmitting power to the fourth transmission wheel 21 via the second transmission belt 34. The fourth transmission wheel 21 drives the conveyor roller 4 to rotate, thus conveying the PVC film. Simultaneously, the rotation of the first shaft 29 drives the first drive gear 30 to rotate, which in turn drives the first driven gear 27, thereby driving the first transmission shaft 12 to rotate. The first fan 10 on the first transmission shaft 12 starts working, working with the heating wire 11 to heat and level the passing PVC film. The rotation of the second shaft 31 drives the second drive gear 32 to rotate, which in turn drives the second driven gear 28, thereby driving the second transmission shaft 15 to rotate. The second fan 14 on the second transmission shaft 15 starts working, drying the heated and leveled PVC film.

[0050] This invention enables PVC film to pass through the leveling roller and the placement plate more quickly and conveniently, thus improving work efficiency.

[0051] Example 2:

[0052] The difference from Embodiment 1 is that the opening 52 is no longer provided on the front side of the base 36. The foot-operated drive component also no longer includes the rotating frame 53 and the support rod 54. Instead, it is as follows... Figures 7-11 As shown, a groove 56 is formed on the front side of the base 36. Longitudinal grooves 57 are formed on both the left and right sides of the groove 56. A mounting groove 58 is formed on the front side wall of the second cavity 39, located directly above the longitudinal grooves 57. Through holes 59 connect the mounting groove 58 to both longitudinal grooves 57. The foot-operated drive component includes a pedal 60 and two pulley sets. The two pulley sets correspond to the two longitudinal grooves 57 respectively. The pulley sets include a first mounting bracket 61, a second mounting bracket 62, a third mounting bracket 63, a movable pulley 64, a first fixed pulley 65, a second fixed pulley 66, and a pull rope 67. The first mounting bracket 61 is fixed to the top of the linkage rod 51 by bolts. The movable pulley 64 is rotatably connected to the first mounting bracket 61 by a pin. The second mounting bracket 62 is fixed to the inner top wall of the second cavity 39 by bolts and corresponds to the first mounting bracket 61. The first fixed pulley 65 is rotatably connected to the second mounting bracket 62 by a pin. The third mounting bracket 63 is bolted to the inner top wall of the mounting groove 58 and corresponds to the second mounting bracket 62. The second fixed pulley 66 is rotatably connected to the third mounting bracket 63 via a pin. One end of the pull rope 67 is located in the longitudinal groove 57 and is bound to a slider 68 that slides up and down along the longitudinal groove 57. The other end of the pull rope 67 passes through the through hole 59 into the mounting groove 58, and successively passes around the second fixed pulley 66, the first fixed pulley 65, and the movable pulley 64, and is bound to the bottom end of the second mounting bracket 62. The pedal 60 is located in the groove 56 and is bolted between the two sliders 68.

[0053] When the foot-operated drive mechanism is needed to move the linkage rod 51 upwards, the operator inserts their toes into the groove 56 and presses down on the foot pedal 60. The downward movement of the foot pedal 60 causes the slider 68 to slide downwards along the longitudinal groove 57. The downward movement of the slider 68 pulls the pull rope 67, which passes sequentially around the second fixed pulley 66, the first fixed pulley 65, and the movable pulley 64. Since the other end of the pull rope 67 is fixed to the bottom of the second mounting bracket 62, the movable pulley 64 moves upwards under the pull of the rope 67, thereby causing the first mounting bracket 61 to move upwards. The first mounting bracket 61 is fixed to the top of the linkage rod 51, thus causing the linkage rod 51 to move upwards. Furthermore, the design of the first mounting bracket 61 and the movable pulley 64 reduces effort, allowing the operator to press down on the foot pedal 60 with less strain.

[0054] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0057] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A PVC film leveling device comprising a base (1), a box (2), a guide roller (3), a conveying roller (4), a placing structure, a leveling structure (5), a heating structure, a blow-drying structure and a conveying structure, characterized in that: The placement structure includes a base (36) and a support plate (37). The base (36) has a first cavity (38) and a second cavity (39) inside. Two symmetrically arranged lifting components are installed in the first cavity (38). The lifting components include a first lifting rod (40), a second lifting rod (41), a spring (44), and an intermediate gear (45). The top end of the first lifting rod (40) is located above the base (36) and is fixedly connected to the support plate (37). The bottom end of the first lifting rod (40) is slidably inserted into the first cavity (38) and is fixedly attached to a first rack (46). The top end of the second lifting rod (41) is located in the first cavity (38) and is fixedly attached to a first rack (46). The second rack (48) and the bottom end of the second lifting rod (41) are slidably connected into the second cavity (39), and a fixing ring (50) is fixedly sleeved on its outside. The spring (44) is sleeved on the outside of the second lifting rod (41) and fixed between the fixing ring (50) and the inner top wall of the second cavity (39). The intermediate gear (45) is rotatably connected in the first cavity (38) and meshes between the first rack (46) and the second rack (48). A linkage rod (51) and a foot drive component are installed in the second cavity (39). The linkage rod (51) is fixed between the bottom ends of the two second lifting rods (41). The foot drive component is used to drive the linkage rod (51) to move upward.

2. A PVC membrane leveling apparatus as claimed in claim 1, wherein: The bottom end of the first rack (46) and the top end of the second rack (48) are respectively provided with a first groove (47) and a second groove (49). The bottom wall and the top wall of the first cavity (38) are respectively fixed with a first vertical rod (42) and a second vertical rod (43). The first rack (46) is slidably sleeved on the outside of the first vertical rod (42) through the first groove (47), and the second rack (48) is slidably sleeved on the outside of the second vertical rod (43) through the second groove (49).

3. The PVC film leveling equipment according to claim 1, characterized in that: The heating structure includes a first fixed frame (9), a first fan (10), a heating wire (11), and a first drive shaft (12). The drying structure includes a second fixed frame (13), a second fan (14), and a second drive shaft (15). The conveying structure is used to drive the first drive shaft (12), the second drive shaft, and the conveying roller (4) to rotate simultaneously. The conveying structure includes a first support (16), a second support (17), a first drive wheel (18), a second drive wheel (19), a third drive wheel (20), a fourth drive wheel (21), and a first gearbox. (22), second gearbox (23) and motor (26), the first gearbox (22) and the second gearbox (23) are both fixed to the top of the housing (2), the top ends of the first drive shaft (12) and the second drive shaft (15) respectively pass through the interior of the first gearbox (22) and the second gearbox (23), and are respectively fixed with the first driven gear (27) and the second driven gear (28), the first bracket (16) and the second bracket (17) are both fixed to the top of the rear side wall of the housing (2), the first bracket (16) and the first gearbox (26) A first rotating shaft (29) is rotatably connected between the first gearbox (22) and the second gearbox (23) via bearings. One end of the first rotating shaft (29) passes through the first gearbox (22) and is fixedly fitted with a first driving gear (30) that meshes with the first driven gear (27). The first transmission wheel (18) is fixedly sleeved on the outside of the first rotating shaft (29). The motor (26) is mounted on the first bracket (16) and is used to drive the first rotating shaft (29) to rotate. A second rotating shaft (31) is rotatably connected between the second bracket (17) and the second gearbox (23) via bearings. One end of (31) is inserted into the second gearbox (23) and a second driving gear (32) is fixed thereon that meshes with the second driven gear (28). The second transmission wheel (19) and the third transmission wheel (20) are both fixedly sleeved on the outside of the second rotating shaft (31). The fourth transmission wheel (21) is connected to one end of the conveying roller (4). A first transmission belt (33) is connected between the first transmission wheel (18) and the second transmission wheel (19). A second transmission belt (34) is connected between the third transmission wheel (20) and the fourth transmission wheel (21).

4. A PVC film leveling device according to claim 3, characterized in that: The top of the housing (2) is fixed with several bearing seats (35) sleeved on the outside of the first rotating shaft (29) and the second rotating shaft (31).

5. A PVC film leveling device according to claim 3, characterized in that: The top of the base (1) is fixed with a mounting seat (24), the top of the mounting seat (24) is fixed with a speed reducer (25), the fourth transmission wheel (21) is fixedly sleeved on the input shaft of the speed reducer (25), and the output shaft of the speed reducer (25) is fixedly connected to the conveying roller (4) through a coupling.

6. The PVC film leveling equipment according to claim 1, characterized in that: The base (36) has an opening (52) on its front side that communicates with the second cavity (39). The foot drive component includes a rotating frame (53) and a support rod (54). The support rod (54) is fixedly connected between the left and right side walls of the second cavity (39). The bottom end of the rotating frame (53) has two rotating seats (55). Both rotating seats (55) are rotatably sleeved on the outside of the support rod (54) through bearings. The rear end of the rotating frame (53) abuts against the bottom of the linkage rod (51). The front end of the rotating frame (53) extends upward at an angle and passes through the opening (52) out of the second cavity (39).

7. A PVC film leveling device according to claim 6, characterized in that: The distance between the rear end of the rotating frame (53) and the rotating seat (55) is less than the distance between its front end and the rotating seat (55).

8. A PVC film leveling device according to claim 1, characterized in that: The base (36) has a groove (56) on its front side. Longitudinal grooves (57) are formed on both the left and right sides of the groove (56). The second cavity (39) has a mounting groove (58) on its front side wall, located directly above the longitudinal grooves (57). A through hole (59) connects the mounting groove (58) to both longitudinal grooves (57). The foot-operated drive component includes a foot pedal (60) and two pulley sets. The two pulley sets correspond to the two longitudinal grooves (57). Each pulley set includes a first mounting bracket (61), a second mounting bracket (62), a third mounting bracket (63), a movable pulley (64), a first fixed pulley (65), a second fixed pulley (66), and a pull rope (67). The first mounting bracket (61) is fixed to the top of the linkage rod (51). The movable pulley (64) is rotatably connected to the first mounting bracket (61) via a pin. The second mounting bracket (65)... 62) Fixed on the inner top wall of the second cavity (39) and corresponding to the first mounting bracket (61), the first fixed pulley (65) is rotatably connected to the second mounting bracket (62) through a pin shaft, the third mounting bracket (63) is fixed on the inner top wall of the mounting groove (58) and corresponding to the second mounting bracket (62), the second fixed pulley (66) is rotatably connected to the third mounting bracket (63) through a pin shaft, one end of the pull rope (67) is located in the longitudinal groove (57) and is fixed with a slider (68) that slides up and down along the longitudinal groove (57), the other end of the pull rope (67) passes through the through hole (59) into the mounting groove (58) and passes around the second fixed pulley (66), the first fixed pulley (65) and the movable pulley (64) in sequence, and is fixed to the bottom end of the second mounting bracket (62), the pedal (60) is located in the groove (56) and is fixedly connected between the two sliders (68).

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