PVC plate recovery processing equipment with film tearing device

Abstract

The invention provides PVC plate recovery processing equipment with a film tearing device. The PVC plate recovery processing equipment comprises a rack, and a front conveying assembly is arranged on the rack; and the pulling-up assembly is used for pulling up the thin film at the end of the PVC plate, the pulling-up assembly is arranged on one side of the front conveying assembly, the pulling-up assembly and the pressing assembly are located on the same side of the front conveying assembly, an adsorption assembly used for adsorbing the pulled-up thin film is arranged on the other side of the pulling-up assembly, and a rear conveying assembly is arranged on one side of the adsorption assembly. By arranging the pulling-up assembly which can act on the end part of the plate in advance, the edge part of the film can be actively lifted up, separated or loosened before the film enters the main body film stripping area, so that the problem that an initial film tearing point is difficult to form due to the fact that the film is tightly attached to the plate surface is effectively avoided. After the film is pulled up, the adsorption assembly immediately applies adsorption force to the loose area, so that the edge of the film is stably pulled and fixed, and a reliable film tearing starting end is formed.

Description

Technical Field

[0001] This invention relates to the field of solid plastic recycling, specifically to a PVC sheet recycling and processing equipment with a film-tearing device. Background Technology

[0002] In the recycling or processing of PVC sheets, it is often necessary to first peel off the protective film or coating attached to the surface of the sheet. However, existing automated film removal equipment generally suffers from a common problem: the film adheres tightly to the sheet surface, lacking an effective initial peeling point. Since the edges of the film cannot be actively lifted, the sheet often has to rely on friction or passive pulling to attempt to separate the film when entering the peeling zone. This not only makes film removal difficult but also easily leads to localized tearing, breakage, or the film failing to peel off effectively even after being stretched.

[0003] Furthermore, without a stable initial film-tearing end, subsequent mechanical film pulling, roller peeling, or adsorption peeling actions are difficult to perform smoothly, affecting the overall peeling efficiency and peeling integrity of the machine. Especially for strong adhesive protective films or advertising films with high adhesion, where the film adheres tightly to the board surface, traditional devices struggle to ensure reliable film lifting, often requiring manual pre-processing, thus reducing the overall level of automation.

[0004] Therefore, how to lift or loosen the film end before it enters the main peeling area, and further form a stable tearing start end, has become a technical problem that needs to be solved by the existing technology.

[0005] Therefore, a PVC sheet recycling and processing device with a film-tearing device is provided to address the above-mentioned problems. Summary of the Invention

[0006] In order to solve the problem in the prior art that the film is tightly adhered to the surface of PVC board and it is difficult to form an initial peeling point, which leads to difficulties in film removal, easy tearing and subsequent film removal actions that cannot be carried out smoothly, thus seriously affecting the efficiency and integrity of automated film removal, the present invention provides a PVC board recycling and processing equipment with a film tearing device.

[0007] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0008] The present invention provides a PVC sheet recycling and processing equipment with a film-tearing device, including a frame, a front conveying component is provided on the frame, and a pressing component is provided on the top of one side of the front conveying component, the pressing component pressing the PVC sheet onto the surface of the front conveying component.

[0009] A lifting assembly for lifting the film at the end of a PVC sheet is provided. The lifting assembly is located on one side of the front conveying assembly and on the same side as the pressing assembly. An adsorption assembly for adsorbing the lifted film is provided on the other side of the lifting assembly. A rear conveying assembly is provided on one side of the adsorption assembly.

[0010] The crushing component is located on the bottom side of the rear conveyor component, and after the crushing component crushes the torn film, it is transported by the rear conveyor component to the PVC sheet on top of it.

[0011] The film on the end of the PVC sheet is first lifted or loosened by the lifting component, and then the film in the lifted or loosened area is adsorbed by the adsorption component, forming the starting end for tearing the film. The film is then torn off by the continuous movement of the PVC sheet.

[0012] In this technical solution, the conveying assembly includes two parallel and rotatable first conveying rollers, and the surfaces of the two first conveying rollers are wrapped with a tensioned first conveyor belt.

[0013] The pressing assembly includes three pressing rollers, and the surfaces of the three pressing rollers are wrapped with a tensioned pressing strip, wherein two pressing rollers are located above the first conveyor belt, and the other pressing roller is located on top of the other two pressing rollers;

[0014] The distance between the conveyor belt and the first conveyor belt between the two pressing rollers located below gradually decreases from the far end to the near end of the lifting assembly.

[0015] Among them, the pressing roller closest to the lifting component is located directly above the first conveying roller on the same side, that is, the central axis of the pressing roller and the central axis of the first conveying roller are on the same vertical plane.

[0016] The minimum spacing between the pressing belt and the first conveyor belt is equal to or forms an interference fit with the thickness of the PVC sheet.

[0017] In this technical solution, the lifting assembly includes a first driving unit and a lifting unit. The first driving unit is mounted on the frame, and the first driving unit drives the lifting unit to rotate in the direction of the forward conveying assembly. The rotating lifting unit lifts the film on the end of the PVC sheet at this location.

[0018] The lifting unit includes a rotating plate that can be pushed by a PVC sheet. The plate is tilted away from the front conveying assembly. A rotating lever is installed in a slot on the plate, and the lever protrudes from the surface of the plate.

[0019] The lever, which is driven to rotate by the PVC sheet, rotates through the transmission part to the side opposite to the direction of movement of the PVC sheet.

[0020] As the PVC sheet moves to the paddle plate and continues to move, the first motor drives the paddle plate to move to one side of the PVC sheet via the first drive shaft. The top area of ​​the paddle plate first touches the bottom end of the PVC sheet.

[0021] In this technical solution, the first drive unit includes a first motor, which is fixed on the frame. A first drive shaft is fixed on the output end of the first motor, and a lifting unit is fixed on the end of the first drive shaft.

[0022] The first motor drives the lifting unit to rotate towards one side of the forward conveying assembly via the first drive shaft until it disengages from the bottom side of the PVC sheet to be lifted or loosened. After the corresponding PVC sheet has completely passed, it resets.

[0023] In this technical solution, the lifting unit includes a mounting frame, which is fixed on the output end of the first drive unit. A bearing shaft arranged in a horizontal direction is fixed on the top of the mounting frame. The bearing shaft is arranged parallel to the first conveying roller and the pressing roller. A rotating sleeve that can rotate is sleeved on the surface of the bearing shaft. The surface of the rotating sleeve is fixed to the lifting plate by a fixing block.

[0024] A first coil spring is sleeved on the surface of the bearing shaft. The two ends of the first coil spring are fixed to the bearing shaft and the rotating sleeve, respectively. The first coil spring allows the lever to be tilted when it is not subjected to external force, and at the same time provides damping when the lever is rotated, so as to avoid the lever and lever contacting the bottom of the PVC sheet with too little pressure, which would affect the lifting and loosening.

[0025] The transmission unit is connected between the rotating sleeve and the lever.

[0026] The rotation of the self-rotating sleeve on the bearing shaft provides a structural basis for the rotation of the lever plate.

[0027] In this technical solution, the transmission unit includes a drive group connected to the rotating sleeve. The drive group rotates with the rotation of the rotating sleeve, and the rotating drive group drives the lever to rotate through the transmission group.

[0028] The drive assembly includes an annular drive rack, which is sleeved on the bearing shaft and concentrically arranged with the bearing shaft. The drive rack is fixedly connected to the surface of the rotating sleeve via a transmission rod. A rotatable transmission gear is meshed on the outer side of the drive rack. The transmission gear is mounted on the bearing shaft. The outer side of the transmission gear meshes with the inner wall of the annular driven rack. The driven rack is connected to the driven assembly via a second connecting rod.

[0029] The driven rack is fixedly connected to the outer ring sidewall of the connecting bearing via the first connecting rod. Both the driven rack and the connecting bearing are concentrically arranged with the bearing shaft. The inner ring sidewall of the connecting bearing is sleeved on the bearing shaft. The connecting bearing and the transmission part are located on both sides of the driving rack.

[0030] In this technical solution, the transmission assembly includes a winding ring, and the winding ring and the driven rack are fixedly connected by a second connecting rod. One end of the transmission rope is fixed to the surface of the winding ring, and the other end of the transmission rope is wound around the bottom of the guide member and wound on the annular groove sidewall of the lever surface. Specifically, the transmission rope is wound on the annular surface inside the groove.

[0031] The winding ring is also fitted onto the bearing shaft and is concentrically positioned with the bearing shaft.

[0032] The guide components are either round shafts or guide wheels, and both are mounted on the frame.

[0033] The driven rack rotates on the bearing shaft via a connecting bearing.

[0034] Specifically, the transmission rope is wound around the annular groove on the surface of the lever from the side closest to the front transmission assembly, ensuring that when the self-rotating winding ring winds up the transmission rope, it drives the lever to rotate in the opposite direction to the PVC sheet.

[0035] Preferably, there are two transmission units, which are symmetrically arranged on both sides of the rotating sleeve.

[0036] There are multiple first links, second links, and transmission rods, all arranged in a circular array.

[0037] In this technical solution, the adsorption component is set on the central axis of the front conveying component, that is, at the middle position of the first conveying roller. There are two rear conveying components, and the two rear conveying components are symmetrically arranged on both sides of the adsorption component.

[0038] The adsorption assembly includes an adsorption unit and a second driving unit. The second driving unit drives the adsorption unit of the adsorption film to rotate in a direction away from the front conveying assembly.

[0039] A through groove is provided on the surface of the frame on one side of the adsorption component, and a film placement frame is provided below the through groove.

[0040] After the adsorption unit adsorbs the film, during the movement of the PVC sheet or after the PVC sheet has completely passed the top of the adsorption unit, the second drive unit drives the adsorption unit to rotate in a direction away from the front conveying component, pulling the film into the through slot, and then releasing the film so that the film falls into the placement frame.

[0041] The placement of the frame slots is not shown in the figure.

[0042] In this technical solution, the second drive unit includes a second motor, which is fixed on the frame, and a second drive shaft is fixed on the output end of the second motor. At least three adsorption parts arranged side by side are installed on the surface of the second drive shaft, and the adsorption parts are retractable.

[0043] A guide section is provided at the adsorption section located in the middle region, and the rotating adsorption section gradually shortens on the guide section.

[0044] The second motor drives the adsorption unit to rotate via the second drive shaft. The rotating adsorption unit gradually shortens to avoid it occupying too much space.

[0045] In this technical solution, the adsorption unit includes a telescopic rod that is vertically distributed in the initial state. The top of the telescopic rod is fixed with a suction cup of an external air pump. A spring is sleeved on the surface of the telescopic rod, and the two ends of the spring are respectively fixed to the two ends of the telescopic rod.

[0046] The top and bottom of the telescopic rods on two adjacent adsorption sections are fixedly connected by an upper connecting rod and a lower connecting rod, respectively, and the bottom end of one of the telescopic rods is fixed to the end of the second drive shaft;

[0047] The upper connecting rod moves along the surface of the guide section when the adsorption section rotates.

[0048] The telescopic rods distributed vertically have the maximum length. When the lifted and loosened film end moves to the top of the suction cup, the air pump is turned on. The air pump draws in the film, thereby fixing the film end and forming a reliable film tearing start end.

[0049] The second drive shaft drives the telescopic rod connected to it to rotate, and the corresponding telescopic rod drives the other telescopic rods to rotate synchronously through the lower connecting rod. The upper connecting rod connected between the two corresponding telescopic rods moves on the guide part. Under the pull of the spring, the upper connecting rod always moves along the surface of the guide part, and the telescopic rod gradually shortens.

[0050] In this technical solution, the guide part includes two symmetrically arranged guide plates with the corresponding adsorption part as the axis of symmetry;

[0051] The corresponding upper connecting rod slides on the surface of the guide plate. Through the tension of the spring, the moving upper connecting rod always overlaps the surface of the guide plate. The guide plate is fixed to the frame by a fixing rod on the side of its surface away from the front conveyor assembly. The fixing rod protrudes in the direction away from the frame, forming an inverted "L" shaped structure.

[0052] A rotating wheel is fitted onto the surface of the upper connecting rod, and the rolling of the rotating wheel on the guide plate replaces the direct contact between the upper connecting rod and the guide plate.

[0053] The guide plate includes a horizontal plate and a vertical plate. The vertical plate is located at the bottom of the horizontal plate and is positioned away from the front conveyor assembly relative to the horizontal plate. The vertical plate and the horizontal plate are connected by a smooth arc plate, and the telescopic rod gradually shortens as the upper connecting rod moves from the arc plate to the vertical plate.

[0054] At the structural level, the diameter of the curved plate gradually decreases from the horizontal plate to the vertical plate on one side.

[0055] When the telescopic rod is installed vertically, its length is at its maximum and it is closest to the bottom side of the PVC sheet.

[0056] In this technical solution, the crushing assembly includes a crushing shell disposed at the bottom of the frame. Two parallel and rotatable mounting shafts are disposed in the inner cavity of the crushing shell. Multiple meshing crushing teeth are sleeved on the surfaces of the two mounting shafts. One of the mounting shafts is connected to the other drive motor. An open guide shell is fixed to the top of the crushing shell. The top of the guide shell extends to the bottom side of the rear conveying assembly. The bottom of the guide shell penetrates the top sidewall of the crushing shell and extends to the top between the two mounting shafts.

[0057] The mounting shaft is mounted on the side wall of the crushing shell by bearings on both sides, and both ends of the mounting shaft extend to the outside of the crushing shell. Meshing gears are fixed on the ends of the two mounting shafts on the same side, and the two meshing gears mesh with each other. One end of the mounting shaft is connected to the output end of the drive motor by one of the existing transmission structures of coupling, gear transmission and belt transmission.

[0058] The rear conveyor assembly includes two self-rotating second conveyor rollers, the surfaces of which are wrapped with a second conveyor belt, and both second conveyor rollers are mounted on a frame.

[0059] The first conveyor roller, the second conveyor roller, and the pressing roller all have fixed rotating shafts at their center points on both sides. Bearings are fitted onto the surface of these rotating shafts, and the bearings are fixed to the frame by rods. One side of the rotating shaft of one of the first conveyor rollers, the second conveyor roller, or the pressing roller is directly connected to the output ends of three drive motors or connected via a transmission component, preferably a belt drive or a gear drive. The drive motors are fixedly mounted on the frame.

[0060] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0061] The positive and progressive effects of this invention are as follows:

[0062] By incorporating a lifting component that can pre-act on the end of the sheet, the edge of the film can be actively lifted, separated, or loosened before it enters the main peeling area, effectively avoiding the problem of difficulty in forming a starting tear point due to the film being tightly attached to the sheet surface. After the film is lifted, the adsorption component immediately applies an adsorption force to the loosened area, ensuring stable traction and fixation of the film edge, forming a reliable tearing starting point.

[0063] Based on this, with the continuous movement of the PVC sheet along the conveying direction, the film is smoothly peeled off as a whole under the traction of the adsorption force and the relative stretching effect generated by the movement of the sheet. Through this synergistic method of "first lifting, then adsorbing, and then using the displacement of the sheet itself to peel off the film", the force required for the initial peeling of the film can be significantly reduced, avoiding local tearing, breakage, or inaccurate film peeling. Attached Figure Description

[0064] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0065] Figure 2 For the present invention Figure 1 A schematic diagram of the structure viewed from below;

[0066] Figure 3 This is a schematic diagram of the structure of the lifting component, the adsorption component, and the rear conveying component of the present invention;

[0067] Figure 4 For the present invention Figure 3 A schematic diagram of the side view structure;

[0068] Figure 5 This is a bottom view of the lifting component of the present invention;

[0069] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the local structure at point I;

[0070] Figure 7 This is a schematic diagram of the connection structure between the transmission part and the lever of the present invention;

[0071] Figure 8 This is a schematic diagram of the connection structure between the transmission part and the bearing rod of the present invention;

[0072] Figure 9 This is a schematic diagram of the transmission part of the present invention;

[0073] Figure 10 For the present invention Figure 9 A top-view structural diagram;

[0074] Figure 11 For the present invention Figure 10 Schematic diagram of the cross-sectional structure at point AA;

[0075] Figure 12 This is a schematic diagram of the adsorption component of the present invention;

[0076] Figure 13 For the present invention Figure 12 A magnified schematic diagram of the structure at point J.

[0077] Explanation of reference numerals in the attached figures

[0078] 1. Rack;

[0079] 2. Front conveyor assembly; 21. First conveyor roller; 22. First conveyor belt;

[0080] 3. Pressing assembly; 31. Pressing roller; 32. Pressing belt;

[0081] 4. Lifting assembly; 41. First motor; 42. First drive shaft; 43. Mounting bracket; 44. Bearing shaft; 45. Transmission unit; 451. Connecting bearing; 452. First connecting rod; 453. Driven rack; 454. Transmission gear; 455. Drive rack; 456. Transmission rod; 457. Second connecting rod; 458. Winding ring; 46. Guide member; 47. Transmission rope; 48. Lifting plate; 481. Lifting lever; 49. Rotating sleeve;

[0082] 5. Adsorption assembly; 51. Second motor; 52. Second drive shaft; 53. Adsorption part; 531. Telescopic rod; 532. Suction cup; 54. Lower connecting rod; 55. Upper connecting rod; 56. Rotating wheel; 57. Guide plate; 58. Fixing rod;

[0083] 6. Rear conveyor assembly; 61. Second conveyor roller; 62. Second conveyor belt;

[0084] 7. Crushing assembly; 71. Guide housing; 72. Crushing housing; 73. Mounting shaft; 74. Meshing gear; 75. Crushing teeth. Detailed Implementation

[0085] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0086] like Figure 1 As shown, a PVC sheet recycling and processing equipment with a film-tearing device includes a frame 1, a front conveying component 2 is provided on the frame 1, and a pressing component 3 is provided on the top of one side of the front conveying component 2. The pressing component 3 presses the PVC sheet onto the surface of the front conveying component 2.

[0087] The lifting component 4 is used to lift the film at the end of the PVC sheet. The lifting component 4 is located on one side of the front conveying component 2 and on the same side as the pressing component 3. The other side of the lifting component 4 is provided with an adsorption component 5 for adsorbing the lifted film. The rear conveying component 6 is provided on one side of the adsorption component 5.

[0088] The crushing component 7 is located on the bottom side of the rear conveyor component 6, and the crushing component 7 crushes the PVC sheet that is transported to the top of the rear conveyor component 6 after the film is torn.

[0089] The film on the end of the PVC sheet is first lifted or loosened by the lifting component 4, and then the film in the lifted or loosened area is adsorbed by the adsorption component 5, forming the starting end for tearing the film. The film is then torn off by the continuous movement of the PVC sheet.

[0090] like Figure 1 As shown, the front conveyor assembly 2 includes two parallel and rotatable first conveyor rollers 21, and the surfaces of the two first conveyor rollers 21 are wrapped with a tensioned first conveyor belt 22.

[0091] The pressing assembly 3 includes three pressing rollers 31, and the surfaces of the three pressing rollers 31 are wrapped with a tensioned pressing belt 32, wherein two pressing rollers 31 are located above the first conveyor belt 22, and the other pressing roller 31 is located on top of the other two pressing rollers 31.

[0092] The distance between the conveyor belt and the first conveyor belt 22 between the two pressing rollers 31 located below gradually decreases from the far end to the near end of the lifting assembly 4.

[0093] Among them, the pressing roller 31 closest to the lifting component 4 is located directly above the first conveying roller 21 on the same side, that is, the central axis of the pressing roller 31 and the central axis of the first conveying roller 21 are on the same vertical plane.

[0094] The minimum spacing between the pressing belt 32 and the first conveyor belt 22 is equal to or forms an interference fit with the thickness of the PVC sheet.

[0095] After the PVC sheet with film is transported to the pressing assembly 3 by the moving first conveyor belt 22, the moving pressing belt 32 works together with the first conveyor belt 22 to push the sheet between the pressing belt 32 and the first conveyor belt 22. While the sheet continues to move horizontally, the sheet is fixed vertically. The film at the end of the sheet is then lifted to provide a structural foundation.

[0096] like Figures 5-11 As shown, the lifting assembly 4 includes a first driving unit and a lifting unit. The first driving unit is mounted on the frame 1, and the first driving unit drives the lifting unit to rotate in the direction of the forward conveying assembly 2. The rotating lifting unit lifts the film on the end of the PVC sheet at this location.

[0097] The lifting unit includes a rotating lever 48 that can be pushed by a PVC sheet. The lever 48 is inclined to the side away from the front conveying assembly 2. A rotating lever 481 is installed on the through groove of the lever 48. The lever 481 protrudes from the surface of the lever 48.

[0098] The lever 48, which is driven to rotate by the PVC sheet, drives the lever 481 to rotate to the side opposite to the direction of movement of the PVC sheet through the transmission part 45.

[0099] When the PVC sheet moves to the dial plate 48 and continues to move, the first motor 41 drives the dial plate 48 to move to one side of the PVC sheet through the first drive shaft 42, and the top area of ​​the dial plate 48 first touches the bottom end of the PVC sheet.

[0100] On the one hand, the lever 48 rotates towards one side of the PVC sheet; on the other hand, the lever 48 is pushed by the bottom end of the PVC sheet, thus rotating on its own axis. The rotation of the lever 48 compensates for this rotation and prevents the lever 48 from hindering the continuous movement of the PVC sheet.

[0101] As the first drive shaft 42 rotates as a whole and rotates on its own axis, the lever 48, after abutting against the bottom end of the PVC sheet, is pushed to the bottom surface of the PVC sheet. During the above process, the surface of the lever 48 and the lever 481 protruding from the surface of the lever 48 and rotating on its own axis successively contact the bottom end of the PVC sheet, thereby lifting or loosening the film in the corresponding area.

[0102] By using lever 481, whose rotation direction is opposite to the movement direction of the PVC sheet, a better lifting and loosening effect can be achieved.

[0103] The rotation of lever 481 does not require an additional power source; its driving force comes from the rotation of lever 48.

[0104] The lever 481 has a cylindrical structure.

[0105] Specifically, the first drive unit includes a first motor 41, which is fixed on the frame 1. A first drive shaft 42 is fixed on the output end of the first motor 41, and a lifting unit is fixed on the end of the first drive shaft 42.

[0106] The first motor 41 drives the lifting unit to rotate in one direction of the forward conveying assembly 2 via the first drive shaft 42 until it disengages from the bottom side of the end of the PVC sheet to be lifted or loosened. After the corresponding PVC sheet has completely passed, it resets.

[0107] Sufficient space is provided between the lifting assembly 4 and the front conveying assembly 2 to allow the lifting unit to rotate.

[0108] The lifting unit includes a mounting frame 43, which is fixed on the output end of the first drive unit, i.e., fixed on the first drive shaft 42. A bearing shaft 44 arranged in a horizontal direction is fixed on the top of the mounting frame 43. The bearing shaft 44 is arranged parallel to the first conveying roller 21 and the pressing roller 31. A rotating sleeve 49 that can rotate is sleeved on the surface of the bearing shaft 44. The surface of the rotating sleeve 49 is fixed with a lifting plate 48 by a fixing block.

[0109] A first coil spring is sleeved on the surface of the bearing shaft 44. The two ends of the first coil spring are fixed on the bearing shaft 44 and the rotating sleeve 49 respectively. The first coil spring allows the lever 48 to be tilted when it is not subjected to external force, and at the same time provides damping for the lever 48 when it rotates, so as to avoid the lever 48 and lever 481 having too little pressure when they contact the bottom of the PVC sheet, which would affect the lifting and loosening.

[0110] The transmission unit 45 is connected between the rotating sleeve 49 and the lever 481.

[0111] The rotation of the self-rotating sleeve on the bearing shaft 44 provides a structural basis for the rotation of the lever plate 48.

[0112] The transmission unit 45 includes a drive group connected to the rotating sleeve. The drive group rotates with the rotation of the rotating sleeve. The rotating drive group drives the lever 481 to rotate through the transmission group.

[0113] The drive assembly includes an annular drive rack 455, which is sleeved on the bearing shaft 44 and is concentrically arranged with the bearing shaft 44. The drive rack 455 is fixedly connected to the surface of the rotating sleeve through the transmission rod 456. A rotatable transmission gear 454 is meshed on the outer side of the drive rack 455. The transmission gear 454 is mounted on the bearing shaft 44. The outer side of the transmission gear 454 is meshed with the inner wall of the annular driven rack 453. The driven rack 453 is connected to the driven assembly through the second connecting rod 457.

[0114] The driven rack 453 is fixedly connected to the outer ring sidewall of the connecting bearing 451 via the first connecting rod 452. Both the driven rack 453 and the connecting bearing 451 are concentrically arranged with the bearing shaft 44. The inner ring sidewall of the connecting bearing 451 is sleeved and installed on the bearing shaft 44. The connecting bearing 451 and the transmission part 45 are located on both sides of the driving rack 455.

[0115] The transmission assembly includes a winding ring 458, which is fixedly connected to the driven rack 453 via a second connecting rod 457. One end of the transmission rope 47 is fixed to the surface of the winding ring 458, and the other end of the transmission rope 47 is wound around the bottom of the guide member 46 and then wound onto the annular groove sidewall on the surface of the lever 481. Specifically, the transmission rope 47 is wound on the annular surface inside the groove.

[0116] The winding ring 458 is also fitted onto the bearing shaft 44 and is concentrically positioned with the bearing shaft 44.

[0117] The guide component 46 is a round shaft or a guide wheel, both of which are mounted on the frame 1.

[0118] When the lever plate 48 is pushed to rotate by the PVC sheet, the rotating sleeve rotates on the bearing shaft 44, thereby driving the drive rack 455 connected to the rotating sleeve to rotate. The rotating drive rack 455 drives the transmission gear 454 meshing with it to rotate, thereby driving the driven rack 453 meshing with the transmission gear 454 to rotate. During the rotation, the driven rack 453 drives the winding ring 458 connected to it to rotate.

[0119] The rotating winding ring 458 begins to wind up the transmission rope 47 connected to it, while the transmission rope itself wound inside the groove of the lever 481 is pulled to form an unwinding, thereby driving the lever 481 to rotate.

[0120] A second coil spring is provided at the rotatable connection between the lever 481 and the inner wall of the through groove of the lever 48. When the lever 481 is pulled by the transmission rope 47 to unwind, the coil spring deforms. When the lever 48 returns to its original position under the action of the first coil spring, the lever 481 also returns to its original position under the action of the second coil spring, thereby achieving the winding of the transmission rope 47.

[0121] The spring force coefficient of the first coil spring is greater than that of the second coil spring.

[0122] The driven rack 453 rotates on the bearing shaft 44 via the connecting bearing 451.

[0123] Specifically, the transmission rope 47 is wound around the annular groove on the surface of the lever 481 from the side closer to the front transmission assembly 2, ensuring that the rotating take-up ring 458 drives the lever 481 to rotate in the opposite direction to the PVC sheet when it takes up the transmission rope 47.

[0124] The transmission part 45 is preferably two, and is symmetrically arranged on both sides of the rotating sleeve.

[0125] There are multiple first connecting rods 452, second connecting rods 457, and transmission rods 456, all of which are arranged in a circular array.

[0126] like Figure 12 and Figure 13 As shown, the adsorption component 5 is located on the central axis of the front conveying component 2, that is, at the middle position of the first conveying roller 21. There are two rear conveying components 6, and the two rear conveying components 6 are symmetrically arranged on both sides of the adsorption component 5.

[0127] The adsorption component 5 includes an adsorption unit and a second driving unit. The second driving unit drives the adsorption unit of the adsorption film to rotate in a direction away from the front conveying component 2.

[0128] A through groove is provided on the surface of the frame 1 on one side of the adsorption component 5, and a film placement frame is provided below the through groove.

[0129] After the adsorption part 53 adsorbs the film, during the movement of the PVC sheet or after the PVC sheet has completely passed the top of the adsorption part 53, the second drive unit drives the adsorption part 53 to rotate in a direction away from the front conveying component 2, pulling the film into the through groove, and then releasing the film so that the film falls into the placement frame.

[0130] The placement of the frame slots is not shown in the figure.

[0131] The second drive unit includes a second motor 51, which is fixed on the frame 1. A second drive shaft 52 is fixed on the output end of the second motor 51. At least three adsorption parts 53 arranged side by side are installed on the surface of the second drive shaft 52. The adsorption parts 53 are retractable.

[0132] A guide is provided at the adsorption part 53 located in the middle region, and the rotating adsorption part 53 gradually shortens on the guide.

[0133] The second motor 51 drives the adsorption part 53 to rotate via the second drive shaft 52. The rotating adsorption part 53 gradually shortens to avoid the rotating adsorption part 53 occupying too much space.

[0134] The adsorption unit 53 includes a telescopic rod 531 that is vertically distributed in the initial state. The top of the telescopic rod 531 is fixed with a suction cup 532 of an external air pump. A spring is sleeved on the surface of the telescopic rod 531, and the two ends of the spring are respectively fixed to the two ends of the telescopic rod 531.

[0135] The top and bottom of the telescopic rods 531 on two adjacent adsorption parts 53 are fixedly connected by an upper connecting rod 55 and a lower connecting rod 54, respectively, and the bottom end of one of the telescopic rods 531 is fixed to the end of the second drive shaft 52.

[0136] The upper connecting rod 55 moves along the surface of the guide section when the adsorption section 53 rotates.

[0137] The telescopic rod 531, which is distributed vertically, has the maximum length. When the lifted and loosened film end moves to the top of the suction cup 532, the air pump is turned on. The air pump draws in the film, thereby sucking it onto the suction cup 532, thus fixing the film end and forming a reliable film tearing start end.

[0138] The second drive shaft 52 drives the telescopic rod 531 connected to it to rotate, and the corresponding telescopic rod 531 drives the other telescopic rods 531 to rotate synchronously through the lower connecting rod 54. The upper connecting rod 55 connected between the two corresponding telescopic rods 531 moves on the guide part. Under the pull of the spring, the upper connecting rod 55 always moves along the surface of the guide part, and the telescopic rod 531 gradually shortens.

[0139] The guide section includes two symmetrically arranged guide plates 57, with the corresponding adsorption section 53 as the axis of symmetry.

[0140] The corresponding upper connecting rod 55 slides on the surface of the guide plate 57. Through the tension of the spring, the moving upper connecting rod 55 is always attached to the surface of the guide plate 57. The guide plate 57 is fixed to the frame 1 by the fixing rod 58 on the side of its surface away from the front conveying assembly 2. The fixing rod 58 protrudes in the direction away from the frame 1, forming an inverted "L" shaped structure.

[0141] A rotatable wheel 56 is fitted onto the surface of the upper connecting rod 55, and the rolling of the wheel 56 on the guide plate 57 replaces the direct contact between the upper connecting rod 55 and the guide plate 57.

[0142] The guide plate 57 includes a horizontal plate and a vertical plate. The vertical plate is located at the bottom of the horizontal plate and is positioned away from the front conveyor assembly 2 relative to the horizontal plate. The vertical plate and the horizontal plate are connected by a smooth arc plate, and the telescopic rod 531 gradually shortens as the upper connecting rod 55 moves from the arc plate to the vertical plate.

[0143] At the structural level, the diameter of the curved plate gradually decreases from the horizontal plate to the vertical plate on one side.

[0144] When the telescopic rod 531 rotates to the connection between the arc plate and the vertical plate, the end of the film overlaps with the protruding fixed part, and then the air pump is turned off, so that the suction cup 532 no longer adheres to the film, allowing the film to fall naturally into the placement frame at the bottom of the channel.

[0145] If the film is long, it can be directly gripped into the groove using existing mechanical walls or grippers.

[0146] Since using a robotic arm to grasp the torn film is a common technique in existing technology, it will not be elaborated upon here, nor is it shown in the figure.

[0147] When the telescopic rod 531 is set vertically, its length is at its maximum and it is close to the bottom side of the PVC sheet.

[0148] The crushing assembly 7 includes a crushing shell 72 disposed at the bottom of the frame 1. Two side-by-side rotating mounting shafts 73 are disposed in the inner cavity of the crushing shell 72. Multiple meshing crushing teeth 75 are sleeved on the surfaces of the two mounting shafts 73. One of the mounting shafts 73 is connected to the other drive motor. An open guide shell 71 is fixed to the top of the crushing shell 72. The top of the guide shell 71 extends to the bottom side of the rear conveying assembly 6. The bottom of the guide shell 71 penetrates the top side wall of the crushing shell 72 and extends to the top between the two mounting shafts 73.

[0149] After the film is removed, the PVC sheet is thrown into the guide shell 71 by the rear conveyor assembly 6. The guide shell 71 guides the sheet to the top between the two mounting shafts 73, where it is crushed by the crushing teeth 75 on the mounting shafts 73. The crushed PVC sheet flows out from the bottom of the crushing shell 72. This provides a foundation for the subsequent recycling and utilization of solid PVC sheets.

[0150] The two sides of the mounting shaft 73 are mounted on the side wall of the crushing shell 72 by bearings, and both ends of the mounting shaft 73 extend to the outside of the crushing shell 72. The two mounting shafts 73 located on the same side are fixed with meshing gears 75, and the two meshing gears 75 mesh with each other. One end of the mounting shaft 73 is connected to the output end of the drive motor through one of the existing transmission structures of coupling, gear transmission and belt transmission.

[0151] The rear conveyor assembly 6 includes two self-rotating second conveyor rollers 61, and the surfaces of the two second conveyor rollers 61 are wrapped with a second conveyor belt 62. Both second conveyor rollers 61 are mounted on the frame 1.

[0152] The first conveyor roller 21, the second conveyor roller 61, and the pressing roller 31 all have rotating shafts fixed at their center points on both sides. Bearings are fitted onto the surface of these rotating shafts, and the bearings are fixed to the frame 1 by rods. One side of the rotating shaft of one of the first conveyor rollers 21, the second conveyor roller 61, or the pressing roller 31 is directly connected to the output ends of three drive motors or connected via a transmission component, preferably a belt drive or a gear drive. The drive motors are fixedly mounted on the frame 1.

[0153] The two rear conveyor components 6 are driven by separate drive motors.

[0154] Place the PVC sheet with the film side down on the first conveyor belt 22, so that the end of the PVC sheet is parallel to the first drive roller and located as close as possible to the center of the first conveyor belt 22, while the length direction of the PVC sheet is parallel to its moving direction.

[0155] Under the conveyor belt 22, the PVC sheet moves to the bottom of the pressing assembly 3, thus fixing the PVC sheet vertically. The PVC sheet continues to move, passing sequentially through the lifting assembly 4 and the adsorption assembly 5, tearing off the film. During this process, the end that is lifted first comes into contact with the second conveyor belt 62, thus completing the relay of transport of the PVC sheet.

[0156] The scheme described in this application is applicable to the recycling of large-volume solid PVC sheets.

[0157] by Figure 3Based on the orientation, the first conveyor belt 22 and the pressing belt 32 move clockwise and counterclockwise, respectively. The clockwise moving first conveyor belt 22 and the counterclockwise moving pressing belt 32 push the PVC sheet between them, thereby fixing the PVC sheet vertically.

[0158] As a preferred technical solution in this application, a hot air assembly is provided between the pressing assembly 3 and the lifting assembly 4. The hot air emitted by the hot air assembly is blown to the bottom of the PVC sheet with the film to assist in peeling and tearing off the film.

[0159] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A PVC sheet recycling and processing device with a film-tearing device, comprising a frame (1), a front conveying assembly (2) disposed on the frame (1), and a pressing assembly (3) disposed on the top side of one side of the front conveying assembly (2), the pressing assembly (3) pressing the PVC sheet onto the surface of the front conveying assembly (2), characterized in that: A lifting assembly (4) for lifting the film at the end of a PVC sheet is provided. The lifting assembly (4) is located on one side of the front conveying assembly (2) and on the same side as the pressing assembly (3). An adsorption assembly (5) for adsorbing the lifted film is provided on the other side of the lifting assembly (4). A rear conveying assembly (6) is provided on one side of the adsorption assembly (5). The crushing component (7) is located on the bottom side of the rear conveying component (6), and the crushing component (7) crushes the torn film and is then transported by the rear conveying component (6) to the top of the PVC sheet.

2. The PVC sheet recycling and processing equipment with a film-tearing device as described in claim 1, characterized in that: The front conveying assembly (2) includes two parallel and rotatable first conveying rollers (21), and the surfaces of the two first conveying rollers (21) are wrapped with a tensioned first conveyor belt (22). The pressing assembly (3) includes three pressing rollers (31), and the surfaces of the three pressing rollers (31) are wrapped with a tensioned pressing belt (32), wherein two of the pressing rollers (31) are located above the first conveyor belt (22), and the other pressing roller (31) is located on top of the other two pressing rollers (31); The distance between the conveyor belt between the two pressing rollers (31) located below and the first conveyor belt (22) gradually decreases from the far end to the near end of the lifting assembly (4).

3. The PVC sheet recycling and processing equipment with a film-tearing device as described in claim 2, characterized in that: The lifting assembly (4) includes a first driving unit and a lifting unit. The first driving unit is mounted on the frame (1), and the first driving unit drives the lifting unit to rotate in the direction of the forward conveying assembly (2). The lifting unit, while rotating, lifts the film on the end of the PVC sheet at this location. The lifting unit includes a rotating plate (48) that can be pushed by the PVC sheet. The plate (48) is inclined to the side away from the front conveying assembly (2). A rotating lever (481) is installed on the through groove of the plate (48). The lever (481) protrudes from the surface of the plate (48). The lever (48), which is driven to rotate by the PVC sheet, drives the lever (481) to rotate to the side opposite to the direction of movement of the PVC sheet via the transmission part (45).

4. The PVC sheet recycling and processing equipment with a film-tearing device as described in claim 3, characterized in that: The first drive unit includes a first motor (41), which is fixed on the frame (1). A first drive shaft (42) is fixed on the output end of the first motor (41), and a lifting unit is fixed on the end of the first drive shaft (42).

5. A PVC sheet recycling and processing equipment with a film-tearing device as described in claim 3, characterized in that: The lifting unit includes a mounting bracket (43), which is fixed on the output end of the first drive unit. A bearing shaft (44) arranged in a horizontal direction is fixed on the top of the mounting bracket (43). A rotating sleeve (49) that can rotate is sleeved on the surface of the bearing shaft (44). The surface of the rotating sleeve (49) is fixed with a lifting plate (48) by a fixing block. The transmission unit (45) is connected between the rotating sleeve (49) and the lever (481).

6. A PVC sheet recycling and processing equipment with a film-tearing device as described in claim 5, characterized in that: The transmission unit (45) includes a drive group connected to the rotating sleeve. The drive group rotates with the rotation of the rotating sleeve. The rotating drive group drives the lever (481) to rotate through the transmission group.

7. A PVC sheet recycling and processing equipment with a film-tearing device as described in claim 1, characterized in that: The adsorption component (5) is arranged on the central axis of the front conveying component (2), and there are two rear conveying components (6), which are symmetrically arranged on both sides of the adsorption component (5). The adsorption assembly (5) includes an adsorption unit and a second driving unit. The second driving unit drives the adsorption unit of the adsorption film to rotate in a direction away from the front conveying assembly (2).

8. A PVC sheet recycling and processing equipment with a film-tearing device as described in claim 7, characterized in that: The second drive unit includes a second motor (51), which is fixed on the frame (1), and a second drive shaft (52) is fixed on the output end of the second motor (51). At least three adsorption parts (53) arranged side by side are installed on the surface of the second drive shaft (52), and the adsorption parts (53) are retractable. A guide portion is provided at the adsorption part (53) located in the middle region, and the rotating adsorption part (53) gradually shortens on the guide portion.

9. A PVC sheet recycling and processing equipment with a film-tearing device as described in claim 1, characterized in that: The crushing assembly (7) includes a crushing shell (72) disposed at the bottom of the frame (1). The inner cavity of the crushing shell (72) is provided with two side-by-side rotating mounting shafts (73). The surfaces of the two mounting shafts (73) are fitted with a plurality of meshing crushing teeth (75). One of the mounting shafts (73) is connected to the other drive motor. An open guide shell (71) is fixed to the top of the crushing shell (72). The top of the guide shell (71) extends to the bottom side of the rear conveying assembly (6). The bottom of the guide shell (71) penetrates the top side wall of the crushing shell (72) and extends to the top between the two mounting shafts (73).

10. A PVC sheet recycling and processing equipment with a film-tearing device as described in claim 7, characterized in that: The rear conveyor assembly (6) includes two self-rotating second conveyor rollers (61), and the surfaces of the two second conveyor rollers (61) are wrapped with a second conveyor belt (62). Both second conveyor rollers (61) are mounted on the frame (1).

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