Thickness detection and adjustment device for PVC film calender

Abstract

The invention discloses a thickness detection and adjustment device for a PVC film calender, and belongs to the technical field of PVC film production, and the thickness detection and adjustment device comprises a shell assembly which is used for storing and protecting a detection assembly; the adjusting assembly is used for driving the detection assembly to move, moving the detection assembly into the shell assembly to be stored when the detection assembly is not used, and can drive the sweeping assembly to move to sweep impurities; and the first transmission assembly is used for driving the dust collection assembly to operate. A hydraulic telescopic rod is started to drive a thickness detector to move so as to drive a first rack to move, when the first rack moves, a second gear can be conveniently driven to rotate due to the fact that the second gear is in meshed connection with the first rack, and the second gear rotates to drive a third main gear to rotate; and when the third main gear rotates, a third auxiliary gear is driven to rotate, when the third auxiliary gear rotates, a second rack is driven to move, when the second rack moves, a cleaning brush can be driven to move, and then impurities on the film are cleaned.

Description

Technical Field

[0001] The present invention relates to a thickness detection and adjustment device, in particular to a thickness detection and adjustment device for a PVC film calender, belonging to the technical field of PVC film production. Background Art

[0002] When processing PVC films, a calender is required. After processing by the calender, thickness detection is needed. When it is detected that impurities affect the film thickness, workers need to clean the impurities.

[0003] However, for the existing thickness detection and adjustment device for PVC film calenders, during actual use, generally workers need to clean the impurities on the film to adjust the thickness detection. And when the thickness detector is not in use, it is not convenient to store and protect the thickness detector. Summary of the Invention

[0004] The main purpose of the present invention is to solve the problems that workers need to clean the impurities on the film and it is not convenient to store and protect the thickness detector, and to provide a thickness detection and adjustment device for a PVC film calender.

[0005] The purpose of the present invention can be achieved by adopting the following technical solutions: A thickness detection and adjustment device for a PVC film calender, comprising a housing assembly for storing and protecting the detection assembly; an adjustment assembly for driving the detection assembly to move, moving the detection assembly into the housing assembly for storage when the detection assembly is not in use, and capable of driving the cleaning assembly to move to clean impurities; a first transmission assembly for driving the dust collection assembly to operate to centrally collect the impurities swept by the cleaning assembly; a dust collection assembly for collecting the impurities swept by the cleaning assembly; a cleaning assembly for cleaning the impurities on the film; a thickness detection assembly for detecting the thickness of the film and thereby detecting whether there are impurities on the film; a moving assembly for driving the first transmission assembly to operate; a second transmission assembly for driving the cleaning assembly to move; a guiding assembly for guiding and limiting the cleaning assembly.

[0006] Preferably, the housing assembly includes an outer shell and side legs, and side legs are installed on both sides of the outer shell.

[0007] Preferably, the adjustment component includes a hydraulic telescopic rod, a support frame, and a side rod. A side rod is installed at the top of the housing. One end of the side rod is installed with a support frame, and a hydraulic telescopic rod is installed on the support frame. The output end of the hydraulic telescopic rod is connected to the thickness detection component.

[0008] Preferably, the first transmission component includes a first main gear, a first auxiliary gear, a first rotating rod, a support disk, a bottom rod, a first main pulley, a first auxiliary pulley, a first belt, a second main pulley, a second belt, and a second auxiliary pulley. A first main gear is installed on the moving component. A bottom rod is installed on the housing. One end of the bottom rod is installed with a support disk, and a first rotating rod is rotatably installed on the support disk. A first auxiliary gear meshingly connected to the first main gear is installed on the first rotating rod. A first main pulley is installed on the first rotating rod. A first auxiliary pulley is installed on the dust suction component. The first auxiliary pulley is connected to the first main pulley through a first belt. A second main pulley is installed on the dust suction component. A second belt is installed on the second main pulley. The second belt is connected to the second auxiliary pulley.

[0009] Preferably, the dust suction component includes a collection box, a support rod, a fan blade frame, fan blades, and a filter screen. A support rod is installed on the housing. One end of the support rod is installed with a collection box. A filter screen is installed on the collection box. A plurality of fan blade frames are installed on the inner wall of the collection box. Fan blades are installed on the fan blade frames. The second auxiliary pulley is installed on one of the fan blades. The first auxiliary pulley and the second main pulley are sequentially installed from top to bottom on the other first rotating rod.

[0010] Preferably, the cleaning component includes a connecting column and a cleaning brush. A connecting column is installed on the second transmission component. One end of the connecting column is installed with a cleaning brush.

[0011] Preferably, the thickness detection component includes a thickness detector, a guide rod, a guide ring, and a connecting rod. The output end of the hydraulic telescopic rod is installed with a thickness detector. A connecting rod is installed on the thickness detector. One end of the connecting rod is installed with a guide ring. A guide rod is installed on the housing. The guide ring is slidably connected to the guide rod.

[0012] Preferably, the moving component includes a first rack, a second gear, a second rotating rod, and a support column. A support column is installed on the guide ring. One end of the support column is installed with a first rack. A second rotating rod is rotatably installed on the housing. A first main gear is installed on the second rotating rod. A second gear meshingly connected to the first rack is installed on the second rotating rod.

[0013] Preferably, the second transmission assembly includes a second rack, a third main gear, a third rotating rod, a fourth rotating rod, and a third auxiliary gear. The second rack is slidably mounted on the housing. The connecting column is mounted at the bottom of the second rack. The third rotating rod is rotatably mounted on the housing. A fourth rotating rod rotatably connected to the housing is mounted below the third rotating rod. A third auxiliary gear meshing with the second rack is mounted on the fourth rotating rod. A third main gear meshing with the second gear and the third auxiliary gear is mounted on the third rotating rod.

[0014] Preferably, the guiding assembly includes a moving rod, a moving ring, and a side column. The moving rod is mounted on the housing. The moving ring is slidably mounted on the moving rod. The side column is mounted on the moving ring. One end of the side column is connected to the second rack.

[0015] The beneficial technical effects of the present invention: According to the thickness detection and adjustment device for a PVC film calender of the present invention, when the hydraulic telescopic rod is activated, it drives the thickness detector to move, and then drives the first rack to move. When the first rack moves, since the second gear is meshed with the first rack, it can facilitate driving the second gear to rotate. When the second gear rotates, it drives the third main gear to rotate. When the third main gear rotates, it drives the third auxiliary gear to rotate. When the third auxiliary gear rotates, it drives the second rack to move. When the second rack moves, it can drive the cleaning brush to move, thereby cleaning the impurities on the film.

[0016] By providing the thickness detector, the impurities on the film can be detected and the thickness can be measured. When the thickness detector senses a change in the film thickness, the hydraulic telescopic rod is activated to drive the thickness detector to move, move the thickness detector into the interior of the housing, and drive the first rack to move and drive the cleaning brush to move to clean the film. When the thickness detector is not in use, the hydraulic telescopic rod can move the thickness detector into the interior of the housing for storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the cleaning brush structure of the present invention; Figure 3 is a schematic diagram of the first rack structure of the present invention; Figure 4 is a schematic diagram of the second rack structure of the present invention; Figure 5 is a schematic diagram of the first auxiliary gear structure of the present invention; Figure 6 is a schematic diagram of the first main gear structure of the present invention; Figure 7 is a schematic diagram of the second gear structure of the present invention; Figure 8 Schematic diagram of the third auxiliary gear structure of the present invention; Figure 9 Schematic diagram of the thickness detector structure of the present invention; Figure 10 Schematic diagram of the collection box structure of the present invention; Figure 11 Schematic diagram of the fan blade structure of the present invention.

[0018] In the figure: 1. Outer shell; 11. Side legs; 2. Hydraulic telescopic rod; 21. Support frame; 22. Side rod; 3. First main gear; 31. First auxiliary gear; 32. First rotating rod; 33. Support disk; 34. Bottom rod; 35. First main pulley; 351. First auxiliary pulley; 36. First belt; 37. Second main pulley; 38. Second belt; 39. Second auxiliary pulley; 4. Collection box; 41. Support rod; 42. Fan blade frame; 43. Fan blade; 44. Filter screen; 5. Cleaning brush; 51. Connecting column; 6. Thickness detector; 61. Guide rod; 62. Guide ring; 63. Connecting rod; 7. First rack; 71. Second gear; 72. Second rotating rod; 73. Support column; 8. Second rack; 81. Third main gear; 82. Third rotating rod; 83. Fourth rotating rod; 84. Third auxiliary gear; 9. Moving rod; 91. Moving ring; 92. Side column. Detailed implementation manners

[0019] To make the technical solutions of the present invention clearer and more definite to those skilled in the art, the present invention will be further described in detail below in conjunction with embodiments and the accompanying drawings. However, the implementation manners of the present invention are not limited thereto.

[0020] Such as Figures 1-11As shown in the figure, the thickness detection and adjustment device for a PVC film calender provided in this embodiment includes a housing assembly for accommodating and protecting the detection assembly; an adjustment assembly for driving the detection assembly to move, moving the detection assembly into the housing assembly for storage when the detection assembly is not in use, and capable of driving the cleaning assembly to move to clean impurities; a first transmission assembly for driving the dust suction assembly to operate to centrally collect the impurities swept by the cleaning assembly; a dust suction assembly for collecting the impurities swept by the cleaning assembly; a cleaning assembly for cleaning the impurities on the film; a thickness detection assembly for detecting the thickness of the film and further detecting whether there are impurities on the film; a moving assembly for driving the first transmission assembly to operate; a second transmission assembly for driving the cleaning assembly to move; a guiding assembly for guiding and limiting the cleaning assembly. The housing assembly includes an outer shell 1 and side legs 11. Side legs 11 are installed on both sides of the outer shell 1. The adjustment assembly includes a hydraulic telescopic rod 2, a support frame 21, and a side rod 22. The side rod 22 is installed on the top of the outer shell 1. One end of the side rod 22 is installed with a support frame 21. The hydraulic telescopic rod 2 is installed on the support frame 21. The output end of the hydraulic telescopic rod 2 is connected to the thickness detection assembly. The thickness detection assembly includes a thickness detector 6, a guiding rod 61, a guiding ring 62, and a connecting rod 63. The output end of the hydraulic telescopic rod 2 is installed with a thickness detector 6. The connecting rod 63 is installed on the thickness detector 6. One end of the connecting rod 63 is installed with a guiding ring 62. The guiding rod 61 is installed on the outer shell 1. The guiding ring 62 is slidably connected to the guiding rod 61. By setting the thickness detector 6, it is possible to detect the impurities on the film and then perform thickness testing. When the thickness detector 6 senses a change in the film thickness, the hydraulic telescopic rod 2 is activated to drive the thickness detector 6 to move, move the thickness detector 6 into the interior of the outer shell 1, and drive the first rack 7 to move and then drive the cleaning brush 5 to move to clean the film. And when the thickness detector 6 is not in use, the hydraulic telescopic rod 2 can move the thickness detector 6 into the interior of the outer shell 1 for storage. By setting the guiding ring 62 to be slidably connected to the guiding rod 61, it is possible to facilitate the guiding and limiting of the thickness detector 6. By setting the side legs 11, it is possible to facilitate the support of the outer shell 1. By setting the side rod 22 and the support frame 21 to cooperate with each other, it is possible to support the hydraulic telescopic rod 2.

[0021] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 10 and Figure 11As shown in the figure, the first transmission assembly includes a first main gear 3, a first auxiliary gear 31, a first rotating rod 32, a support disk 33, a bottom rod 34, a first main pulley 35, a first auxiliary pulley 351, a first belt 36, a second main pulley 37, a second belt 38, and a second auxiliary pulley 39. The first main gear 3 is installed on the moving assembly, the bottom rod 34 is installed on the housing 1, one end of the bottom rod 34 is installed with the support disk 33, the first rotating rod 32 is rotatably installed on the support disk 33, the first auxiliary gear 31 meshed with the first main gear 3 is installed on the first rotating rod 32, the first main pulley 35 is installed on the first rotating rod 32, the first auxiliary pulley 351 is installed on the dust suction assembly, the first auxiliary pulley 351 is connected to the first main pulley 35 through the first belt 36, the second main pulley 37 is installed on the dust suction assembly, the second belt 38 is installed on the second main pulley 37, and the second belt 38 is connected to the second auxiliary pulley 39. The dust suction assembly includes a collection box 4, a support rod 41, a fan blade frame 42, fan blades 43, and a filter screen 44. The support rod 41 is installed on the housing 1, one end of the support rod 41 is installed with the collection box 4, the filter screen 44 is installed on the collection box 4, a plurality of fan blade frames 42 are installed on the inner wall of the collection box 4, the fan blades 43 are installed on the fan blade frames 42, the second auxiliary pulley 39 is installed on one of the fan blades 43, and the first auxiliary pulley 351 and the second main pulley 37 are installed on the other first rotating rod 32 in sequence from top to bottom. When the hydraulic telescopic rod 2 is started to drive the thickness detector 6 to move, the first rack 7 moves when the thickness detector 6 moves. When the first rack 7 moves, it can drive the second gear 71 to rotate. When the second gear 71 rotates, it can drive the second rotating rod 72 to rotate. When the second rotating rod 72 rotates, it can drive the first main gear 3 to rotate. When the first main gear 3 rotates, it can drive the first auxiliary gear 31 to rotate. When the first auxiliary gear 31 rotates, it can drive the first rotating rod 32 to rotate, and then can drive the first main pulley 35 to rotate. When the first main pulley 35 rotates, it drives the first auxiliary pulley 351 to rotate through the first belt 36. When the first auxiliary pulley 351 rotates, it drives one of the fan blades 43 to rotate. When one of the fan blades 43 rotates, it drives the second main pulley 37 to rotate, and drives the second auxiliary pulley 39 to rotate through the second belt 38, and then drives the other fan blade 43 to rotate, and cooperates with the filter screen 44 to centrally collect the impurities swept by the cleaning brush 5, avoiding the impurities floating and being adsorbed on the film again. By setting the bottom rod 34, the support disk 33 can be supported, and the first rotating rod 32 is rotatably connected to the support disk 33 through a bearing.

[0022] In this embodiment, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9As shown, the cleaning assembly includes a connecting column 51 and a cleaning brush 5. The connecting column 51 is installed on the second transmission assembly. One end of the connecting column 51 is installed with the cleaning brush 5. The moving assembly includes a first rack 7, a second gear 71, a second rotating rod 72 and a support column 73. The support column 73 is installed on the guiding ring 62. One end of the support column 73 is installed with the first rack 7. The second rotating rod 72 is rotatably installed on the housing 1. A first main gear 3 is installed on the second rotating rod 72. A second gear 71 meshed with the first rack 7 is installed on the second rotating rod 72. The second transmission assembly includes a second rack 8, a third main gear 81, a third rotating rod 82, a fourth rotating rod 83 and a third auxiliary gear 84. The second rack 8 is slidably installed on the housing 1. The connecting column 51 is installed at the bottom of the second rack 8. The third rotating rod 82 is rotatably installed on the housing 1. A fourth rotating rod 83 rotatably connected to the housing 1 is installed below the third rotating rod 82. A third auxiliary gear 84 meshed with the second rack 8 is installed on the fourth rotating rod 83. A third main gear 81 meshed with the second gear 71 and the third auxiliary gear 84 is installed on the third rotating rod 82. The guiding assembly includes a moving rod 9, a moving ring 91 and a side column 92. The moving rod 9 is installed on the housing 1. The moving ring 91 is slidably installed on the moving rod 9. The side column 92 is installed on the moving ring 91. One end of the side column 92 is connected to the second rack 8. When the hydraulic telescopic rod 2 is activated, it drives the thickness detector 6 to move, and then drives the first rack 7 to move. When the first rack 7 moves, since the second gear 71 is meshed with the first rack 7, it can drive the second gear 71 to rotate. When the second gear 71 rotates, it drives the third main gear 81 to rotate. When the third main gear 81 rotates, it drives the third auxiliary gear 84 to rotate. When the third auxiliary gear 84 rotates, it drives the second rack 8 to move. When the second rack 8 moves, it can drive the cleaning brush 5 to move, so as to clean the impurities on the film. By setting the moving rod 9 and the moving ring 91 to be slidably connected, it can facilitate the guiding and limiting of the second rack 8. The third rotating rod 82 is connected to the housing 1 through a bearing, and the fourth rotating rod 83 is connected to the housing 1 through a bearing.

[0023] In this embodiment, as Figures 1-11 shown, the working process of a thickness detection and adjustment device for a PVC film calender provided in this embodiment is as follows: Step 1: When the thickness detector 6 senses a change in the film thickness, the hydraulic telescopic rod 2 is activated to drive the thickness detector 6 to move, moving the thickness detector 6 into the interior of the housing 1, thereby driving the first rack 7 to move. When the first rack 7 moves, since the second gear 71 is meshed with the first rack 7, it is convenient to drive the second gear 71 to rotate. When the second gear 71 rotates, it drives the third main gear 81 to rotate. When the third main gear 81 rotates, it drives the third auxiliary gear 84 to rotate. When the third auxiliary gear 84 rotates, it drives the second rack 8 to move. When the second rack 8 moves, it drives the cleaning brush 5 to move, thereby cleaning the impurities on the film and moving the impurities to the position of the collection box 4. Step 2: The hydraulic telescopic rod 2 is activated to drive the thickness detector 6 to move. When the thickness detector 6 moves, it drives the first rack 7 to move. When the first rack 7 moves, it drives the second gear 71 to rotate. When the second gear 71 rotates, it drives the second rotating rod 72 to rotate. When the second rotating rod 72 rotates, it drives the first main gear 3 to rotate. When the first main gear 3 rotates, it drives the first auxiliary gear 31 to rotate. When the first auxiliary gear 31 rotates, it drives the first rotating rod 32 to rotate, thereby driving the first main pulley 35 to rotate. When the first main pulley 35 rotates, it drives the first auxiliary pulley 351 to rotate through the first belt 36. When the first auxiliary pulley 351 rotates, it drives one of the fan blades 43 to rotate. When one of the fan blades 43 rotates, it drives the second main pulley 37 to rotate, and drives the second auxiliary pulley 39 to rotate through the second belt 38, thereby driving the other fan blade 43 to rotate, and cooperating with the filter screen 44 to centrally collect the impurities swept by the cleaning brush 5.

[0024] In summary, in this embodiment, according to the thickness detection and adjustment device for the PVC film calender in this embodiment, by setting the thickness detector 6, it is possible to detect impurities on the film and then perform thickness testing. When the thickness detector 6 senses a change in the film thickness, the hydraulic telescopic rod 2 starts to drive the thickness detector 6 to move, moves the thickness detector 6 into the interior of the housing 1, and drives the first rack 7 to move, thereby driving the cleaning brush 5 to move to clean the film. When the thickness detector 6 is not in use, the hydraulic telescopic rod 2 can move the thickness detector 6 into the interior of the housing 1 for storage. By setting the guide ring 62 to be slidably connected to the guide rod 61, it is possible to facilitate the guiding and limiting of the thickness detector 6. By setting the side legs 11, it is possible to facilitate the support of the housing 1. By setting the side rod 22 to cooperate with the support frame 21, it is possible to support the hydraulic telescopic rod 2. When the hydraulic telescopic rod 2 starts to drive the thickness detector 6 to move, the thickness detector 6 drives the first rack 7 to move when moving. When the first rack 7 moves, it can drive the second gear 71 to rotate. When the second gear 71 rotates, it can drive the second rotating rod 72 to rotate. When the second rotating rod 72 rotates, it can drive the first main gear 3 to rotate. When the first main gear 3 rotates, it can drive the first auxiliary gear 31 to rotate. When the first auxiliary gear 31 rotates, it can drive the first rotating rod 32 to rotate, and then can drive the first main pulley 35 to rotate. When the first main pulley 35 rotates, it drives the first auxiliary pulley 351 to rotate through the first belt 36. When the first auxiliary pulley 351 rotates, it drives one of the fan blades 43 to rotate. When one of the fan blades 43 rotates, it drives the second main pulley 37 to rotate, drives the second auxiliary pulley 39 to rotate through the second belt 38, and then drives the other fan blade 43 to rotate, and cooperates with the filter screen 44 to centrally collect the impurities swept by the cleaning brush 5, avoiding the impurities floating and being adsorbed on the film again. By setting the bottom rod 34, it is possible to support the support disc 33. The first rotating rod 32 is rotatably connected to the support disc 33 through a bearing. When the hydraulic telescopic rod 2 starts to drive the thickness detector 6 to move, it drives the first rack 7 to move. When the first rack 7 moves, since the second gear 71 is meshed with the first rack 7, it is possible to facilitate driving the second gear 71 to rotate. When the second gear 71 rotates, it drives the third main gear 81 to rotate. When the third main gear 81 rotates, it drives the third auxiliary gear 84 to rotate. When the third auxiliary gear 84 rotates, it drives the second rack 8 to move. When the second rack 8 moves, it can drive the cleaning brush 5 to move, thereby cleaning the impurities on the film. By setting the moving rod 9 to be slidably connected to the moving ring 91, it is possible to facilitate the guiding and limiting of the second rack 8. The third rotating rod 82 is connected to the housing 1 through a bearing, and the fourth rotating rod 83 is connected to the housing 1 through a bearing.

[0025] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but rather use the difference in the functions of components as the criterion for distinction. As used throughout the specification and claims, the term "comprising" is an open-ended term and should be interpreted as "comprising but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve technical problems within a certain error range and basically achieve the technical effects.

[0026] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the commodity or system including the element.

[0027] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and variations made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A thickness detection and adjustment device for a PVC film calender, characterized in that: include A housing assembly, used to store and protect the detection assembly; The adjustment component is used to drive the detection component to move, and when the detection component is not in use, the detection component is moved to the housing component for storage, and can drive the cleaning component to move to clean impurities; The first transmission component is used to drive the dust collection component to operate and collect the impurities swept by the cleaning component; A dust collecting component, used for collecting impurities swept by the cleaning component; A cleaning component, used to clean impurities on the film; A thickness detection component is used to detect the thickness of the film and then detect whether there are impurities on the film; A moving component, used to drive the first transmission component to operate; The second transmission assembly is used to drive the cleaning assembly to move; The guide component is used to guide and limit the cleaning component.

2. A thickness detection and adjustment device for a PVC film calender according to claim 1, characterized in that: The housing assembly comprises an outer shell (1) and side legs (11), and the side legs (11) are mounted on both sides of the outer shell (1).

3. A thickness detection and adjustment device for a PVC film calender according to claim 2, characterized in that: The adjustment component comprises a hydraulic telescopic rod (2), a support frame (21) and a side rod (22); the top of the housing (1) is provided with a side rod (22); one end of the side rod (22) is provided with a support frame (21); the support frame (21) is provided with a hydraulic telescopic rod (2); and the output end of the hydraulic telescopic rod (2) is connected to the thickness detection component.

4. A thickness detection and adjustment device for a PVC film calender according to claim 3, characterized in that: The first transmission assembly comprises a first main gear (3), a first auxiliary gear (31), a first rotating rod (32), a support plate (33), a bottom rod (34), a first main pulley (35), a first auxiliary pulley (351), a first belt (36), a second main pulley (37), a second belt (38) and a second auxiliary pulley (39); the first main gear (3) is mounted on the moving assembly; the bottom rod (34) is mounted on the housing (1); a supporting plate (33) is mounted on one end of the bottom rod (34); and the first rotating rod (32) is rotatably mounted on the support plate (33). The first rotating rod (32) is provided with a first auxiliary gear (31) meshingly connected with the first main gear (3); the first rotating rod (32) is provided with a first main pulley (35); the dust collecting assembly is provided with a first auxiliary pulley (351); the first auxiliary pulley (351) is connected to the first main pulley (35) via a first belt (36); the dust collecting assembly is provided with a second main pulley (37); the second main pulley (37) is provided with a second belt (38); the second belt (38) is connected to the second auxiliary pulley (39).

5. A thickness detection and adjustment device for a PVC film calender according to claim 4, characterized in that: The dust collection assembly comprises a collection box (4), a support rod (41), a fan blade frame (42), a fan blade (43) and a filter screen (44); the support rod (41) is mounted on the housing (1); one end of the support rod (41) is mounted on the collection box (4); the filter screen (44) is mounted on the collection box (4); a plurality of fan blade frames (42) are mounted on the inner wall of the collection box (4); the fan blade frames (42) are mounted on the fan blades (43); one of the fan blades (43) is mounted on the second auxiliary pulley (39); and the other first rotating rod (32) is mounted on the first auxiliary pulley (351) and the second main pulley (37) in sequence from top to bottom.

6. A thickness detection and adjustment device for a PVC film calender according to claim 5, characterized in that: The cleaning assembly comprises a connecting column (51) and a cleaning brush (5); the connecting column (51) is mounted on the second transmission assembly; and the cleaning brush (5) is mounted on one end of the connecting column (51).

7. A thickness detection and adjustment device for a PVC film calender according to claim 6, characterized in that: The thickness detection assembly comprises a thickness detector (6), a guide rod (61), a guide ring (62) and a connecting rod (63); the thickness detector (6) is mounted on the output end of the hydraulic telescopic rod (2); the connecting rod (63) is mounted on the thickness detector (6); one end of the connecting rod (63) is mounted on the guide ring (62); the housing (1) is mounted on the guide rod (61); and the guide ring (62) is slidably connected to the guide rod (61).

8. A thickness detection and adjustment device for a PVC film calender according to claim 7, characterized in that: The moving assembly comprises a first rack (7), a second gear (71), a second rotating rod (72) and a support column (73); the guide ring (62) is provided with a support column (73); one end of the support column (73) is provided with a first rack (7); a second rotating rod (72) is rotatably provided on the housing (1); a first main gear (3) is provided on the second rotating rod (72); and a second gear (71) meshingly connected with the first rack (7) is provided on the second rotating rod (72).

9. A thickness detection and adjustment device for a PVC film calender according to claim 8, characterized in that: The second transmission assembly comprises a second rack (8), a third main gear (81), a third rotating rod (82), a fourth rotating rod (83) and a third auxiliary gear (84); the second rack (8) is slidably mounted on the housing (1); the bottom of the second rack (8) is mounted with the connecting column (51); the third rotating rod (82) is rotatably mounted on the housing (1); a fourth rotating rod (83) rotatably connected to the housing (1) is mounted below the third rotating rod (82); a third auxiliary gear (84) meshingly connected to the second rack (8) is mounted on the fourth rotating rod (83); and a third main gear (81) meshingly connected to the second gear (71) and the third auxiliary gear (84) is mounted on the third rotating rod (82).

10. A thickness detection and adjustment device for a PVC film calender according to claim 9, characterized in that: The guide assembly comprises a moving rod (9), a moving ring (91) and a side column (92); the moving rod (9) is mounted on the housing (1); the moving ring (91) is slidably mounted on the moving rod (9); the side column (92) is mounted on the moving ring (91); one end of the side column (92) is connected to the second rack (8).

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