PVC film thickness detection mechanism and discharging device thereof

Abstract

The invention relates to the field of PVC thin films, and discloses a PVC thin film thickness detection mechanism and a discharging device.The PVC thin film discharging device comprises a first mounting frame, an adjusting mechanism is arranged at the top of the first mounting frame, fixing plates are symmetrically and fixedly connected to the top of the adjusting mechanism, first connecting columns are rotationally connected to the opposite sides of the fixing plates, and a second connecting column is rotationally connected to the opposite sides of the first connecting columns; first connecting blocks are fixedly connected to the opposite sides of the first connecting columns, limiting structures are fixedly connected to the opposite sides of the first connecting blocks, reset springs are uniformly and fixedly connected to the opposite sides of the first connecting columns, and first connecting plates are uniformly and fixedly connected to the opposite sides of the moving blocks. And the centers of the two sides of the PVC film are clamped through mutual approaching of fixing blocks, so that a second connecting block and a limiting block are driven to move, the inner diameters of the reel-shaped PVC films with different inner diameters are limited and fixed, and the reel-shaped PVC films with different diameters are discharged without other disassembly and assembly.

Description

Technical Field

[0001] The invention relates to the technical field of PVC films, in particular to a PVC film thickness detection mechanism and a material discharging device thereof. Background Art

[0002] The main component of PVC film is polyvinyl chloride, and other ingredients can be added to enhance heat resistance, toughness, ductility, etc. The top layer of this surface film is paint, the main component in the middle is polyvinyl chloride, and the bottom layer is back-coated adhesive. It is essentially a vacuum blister film, which is used for surface packaging of various panels, so it is also called decorative film and adhesive film. It is used in many industries such as building materials, packaging, and medicine. After the preparation of PVC film, it needs to be discharged and thickness tested to ensure the thickness consistency of the prepared PVC film and meet the corresponding specifications for subsequent processing.

[0003] PVC film is generally in the form of a roll, and the PVC film unloading device will encounter rolls of different diameters during use. The traditional PVC film unloading device often uses an air-expanding shaft to unload the roll-shaped PVC film of different diameters. However, when using it, the air-expanding shaft needs to be disassembled, and the roll-shaped PVC film needs to be passed through the air-expanding shaft before installation. The disassembly and assembly of the air-expanding shaft needs to be done manually and with corresponding equipment, which will waste a lot of manpower and material resources and affect the efficiency of unloading. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a PVC film thickness detection mechanism and a discharging device thereof, which solve the problem that traditional PVC film discharging devices often use an air inflation shaft to discharge roll-shaped PVC films of different diameters, but when using it, the air inflation shaft needs to be disassembled, and the roll-shaped PVC film needs to be passed through the air inflation shaft and then installed. The disassembly and assembly of the air inflation shaft needs to be done manually and with corresponding equipment, which will waste a lot of manpower and material resources and affect the efficiency of discharging.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a PVC film unloading device comprises a first mounting frame, an adjusting mechanism is arranged on the top of the first mounting frame, a fixing plate is symmetrically fixedly connected to the top of the adjusting mechanism, a first connecting column is rotatably connected to the opposite side of the fixing plate, a first connecting block is fixedly connected to the opposite side of the first connecting column, a limiting structure is fixedly connected to the opposite side of the first connecting block, a reset spring is evenly fixedly connected to the opposite side of the first connecting column, an end of the reset spring away from the first connecting column is fixedly connected to a moving block, an opposite side of the moving block is evenly fixedly connected to the first connecting plate, one end of the first connecting plate is rotatably connected to the first rotating shaft, an outer wall of the first rotating shaft is symmetrically rotatably connected to the second connecting plate, an end of the second connecting plate away from the first rotating shaft is rotatably connected to the second rotating shaft, a second connecting block is fixedly connected to the middle of the second rotating shaft, and a limiting block is fixedly connected to the top of the second connecting block.

[0006] Preferably, the adjustment mechanism includes a first slide groove, the first slide groove is arranged on the top of the first mounting frame, the first slide groove is symmetrically and slidingly connected with a first slider inside, the middle part of the first slider is threadedly connected with a bidirectional screw rod, both ends of the bidirectional screw rod are rotatably connected to both sides of the first slide groove, one side of the first mounting frame is fixedly connected with a first servo motor, the output end of the first servo motor passes through one side of the first mounting frame and is fixedly connected to one end of the bidirectional screw rod, and the top of the first slider is fixedly connected with a fixing plate.

[0007] Preferably, the limiting structure includes a fixed block, the circumferential surface of the fixed block is evenly provided with grooves, the grooves on the circumferential surface of the fixed block are evenly provided with second slide grooves, the second slide groove is L-shaped, the first rotating shaft and the second rotating shaft are slidably connected at both ends inside the second slide groove, and the limiting block is slidably connected in the grooves on the circumferential surface of the fixed block.

[0008] Preferably, grooves are evenly arranged on the circumferential surface of the first connecting block, the return spring is located in the groove of the first connecting block, the inner wall of the movable block is slidably connected to the outer wall of the first connecting block, an I-shaped mounting plate is fixedly connected to the bottom of the first mounting frame, and the I-shaped mounting plate is symmetrically fixedly connected to the second mounting plate away from the top of the first mounting frame.

[0009] Preferably, an upper roller is rotatably connected to the side opposite to the second mounting plate, a second gear is fixedly connected to one side of the upper roller, an outer wall of the second gear is meshingly connected to the first gear, a lower roller is fixedly connected to the middle of the first gear, both ends of the lower roller are rotatably connected to the side opposite to the second mounting plate, a second servo motor is fixedly connected to one side of one of the second mounting plates, an output end of the second servo motor passes through one side of the second mounting plate and is fixedly connected to one end of the lower roller, and the lower roller is located below the second gear.

[0010] The PVC film thickness detection mechanism comprises a second mounting frame, a second electric slide rail is fixedly connected to one side of the second mounting frame, a third slider is arranged inside the second electric slide rail, a laser thickness gauge is arranged at the bottom of the third slider, a transition roller is rotatably connected inside the second mounting frame, the transition roller is located below the laser thickness gauge, and an I-shaped mounting plate is fixedly connected to the bottom of the second mounting frame.

[0011] Preferably, the top of the I-shaped mounting plate is symmetrically and fixedly connected to a first mounting plate, a first electric slide rail is provided on the side opposite to the first mounting plate, a second slider is provided inside the first electric slide rail, an adjusting roller is rotatably connected to the side opposite to the second slider, a third rotating shaft is rotatably connected to the side of the second slider opposite to the adjusting roller, a second connecting column is symmetrically and fixedly connected to one side of the third rotating shaft, a dust removal brush is provided at the end of the second connecting column away from the third rotating shaft, and the dust removal brush is V-shaped.

[0012] Preferably, a dust box is provided in the middle of the I-shaped mounting plate, a vacuum cleaner is provided on the top of the dust box, the output end of the vacuum cleaner is fixedly connected to the inside of the dust box, the input end of the vacuum cleaner is symmetrically fixedly connected to a dust pipe, the end of the dust pipe away from the vacuum cleaner is fixedly connected to a dust hopper, the bottom of the dust hopper is fixedly connected to the top of the I-shaped mounting plate, and the dust hopper is located below the dust removal brush.

[0013] Working principle: When in use, one side of the roll of the roll-like PVC film is passed through the outer wall of one of the fixed blocks, and the operation of the first servo motor drives the bidirectional screw to operate, thereby driving the first slider to move away from or closer to each other inside the first slide slot, thereby driving the fixed plate to move away from or closer to each other, thereby driving the fixed block to move closer to or away from each other, thereby clamping the centers of both sides of the roll-like PVC film of different widths, and then the two sides of the PVC film will squeeze the moving block, so that the inner wall of the moving block slides on the outer wall of the first connecting block, thereby compressing the reset spring and driving the first connecting plate to approach the first connecting column, thereby driving the first rotating shaft to move, thereby driving the second rotating shaft to move through the second connecting plate, thereby driving the second connecting block and the limit block to move, so that the inner diameter of the roll-like PVC film with different inner diameters can be limited and fixed. After the PVC film is clamped and fixed, it is pulled so that a layer of PVC film passes through the bottom of the adjusting roller, and the operation of the first electric slide rail drives the second slider to move vertically. The PVC film moves up and down, thereby driving the adjusting roller and the third rotating shaft to move, so that the tension of the PVC film when it moves can be adjusted by the adjusting roller to keep it in a straight state, thereby enhancing the accuracy of thickness measurement, and removing dust on its surface through the dust removal brush. Through the operation of the vacuum cleaner, the dust removed by the dust removal brush is collected through the dust hopper and the dust suction pipe, and stored through the dust collection box. After a layer of PVC film passes through the bottom of the adjusting roller, it is pulled through the top of the transition roller, and then through the operation of the second electric slide rail, the third slider is driven to move horizontally, thereby driving the laser thickness gauge to move, so that the thickness of the PVC film on the upper surface of the transition roller can be detected in different areas according to needs. After a layer of PVC film passes through the top of the third slider, it is pulled into between the upper roller shaft and the lower roller shaft, and through the operation of the second servo motor, the lower roller shaft is driven to rotate, thereby driving the first gear to rotate, thereby driving the second gear to rotate, thereby driving the upper roller shaft to rotate, so that the PVC film can be clamped and conveyed between the upper roller shaft and the lower roller shaft, thereby completing thickness detection and material discharge.

[0014] The present invention provides a PVC film thickness detection mechanism and a material discharging device thereof, which have the following beneficial effects:

[0015] 1. The present invention clamps the centers of both sides of the PVC film by bringing the fixed blocks closer to each other. The two sides of the PVC film squeeze the moving blocks, so that the moving blocks slide, thereby compressing the reset spring and driving the first connecting plate and the first rotating shaft to move, thereby driving the second connecting block and the limiting block to move, so as to limit and fix the inner diameter of the roll-shaped PVC film with different inner diameters, thereby realizing the discharge of the roll-shaped PVC film with different diameters without the need for other disassembly and assembly, saving manpower and material resources, and being applicable to PVC films of different widths, thereby increasing the discharge efficiency.

[0016] 2. The present invention drives the bidirectional screw to operate through the operation of the first servo motor, thereby driving the fixed plate to move away from or towards each other, thereby driving the first connecting column, the first connecting block, the moving block, and the fixed block to move towards or away from each other, thereby clamping roll-shaped PVC films of different widths, making it suitable for PVC films of different widths, thereby increasing the practicality of the present invention.

[0017] 3. The present invention drives the second slider to move vertically up and down through the operation of the first electric slide rail, thereby driving the adjusting roller and the third rotating shaft to move, so that the tension of the PVC film during movement can be adjusted by the adjusting roller to keep it in a straight state, thereby enhancing the accuracy of thickness measurement, and dust on the surface can be removed by a dust removal brush, thereby further enhancing the accuracy of thickness measurement, thereby making the present invention more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention;

[0019] Figure 2 It is a schematic diagram of the return spring of the present invention;

[0020] Figure 3 It is a schematic diagram of the limit block of the present invention;

[0021] Figure 4 is a schematic diagram of a second connection block of the present invention;

[0022] Figure 5 is a schematic diagram of a second chute of the present invention;

[0023] Figure 6 A schematic diagram of a dust removal brush according to the present invention;

[0024] Figure 7 A schematic diagram of a dust collection box of the present invention;

[0025] Figure 8 It is a schematic diagram of the second gear of the present invention.

[0026] Among them, 1, I-shaped mounting plate; 2, first mounting frame; 3, first servo motor; 4, first mounting plate; 5, second mounting frame; 6, second mounting plate; 7, second servo motor; 8, upper roller; 9, first slide; 10, bidirectional screw rod; 11, first slider; 12, fixed plate; 13, first connecting column; 14, first connecting block; 15, reset spring; 16, moving block; 17, fixed block; 18, limit block; 19, first connecting plate; 20, first rotating shaft; 21, first Second connecting plate; 22, second rotating shaft; 23, second connecting block; 24, second slide groove; 25, first electric slide rail; 26, second slider; 27, adjusting roller; 28, third rotating shaft; 29, second connecting column; 30, dust brush; 31, transition roller; 32, second electric slide rail; 33, dust hopper; 34, laser thickness gauge; 35, dust box; 36, third slider; 37, dust pipe; 38, vacuum cleaner; 39, first gear; 40, second gear; 41, lower roller. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example:

[0029] Please refer to the attached Figure 1 -Attached Figure 8 The embodiment of the present invention provides a PVC film unloading device, comprising a first mounting frame 2, an adjusting mechanism is arranged on the top of the first mounting frame 2, a fixing plate 12 is symmetrically fixedly connected to the top of the adjusting mechanism, a first connecting column 13 is rotatably connected to the opposite side of the fixing plate 12, a first connecting block 14 is fixedly connected to the opposite side of the first connecting column 13, a limiting structure is fixedly connected to the opposite side of the first connecting block 14, a reset spring 15 is evenly fixedly connected to the opposite side of the first connecting column 13, a moving block 16 is fixedly connected to the end of the reset spring 15 away from the first connecting column 13, a first connecting plate 19 is evenly fixedly connected to the opposite side of the moving block 16, one end of the first connecting plate 19 is rotatably connected to a first rotating shaft 20, a second connecting plate 21 is symmetrically rotatably connected to the outer wall of the first rotating shaft 20, an end of the second connecting plate 21 away from the first rotating shaft 20 is rotatably connected to a second rotating shaft 22, a second connecting block 23 is fixedly connected to the middle of the second rotating shaft 22, and a limiting block 18 is fixedly connected to the top of the second connecting block 23.

[0030] Specifically, by the operation of the adjusting mechanism, the fixed plates 12 are driven to move closer to or farther from each other, thereby driving the first connecting column 13, the first connecting block 14, the moving block 16, and the fixed block 17 to move closer to or farther from each other, so that the centers of both sides of the roll-shaped PVC film of different widths can be clamped, so that it can be suitable for PVC films of different widths. The centers of both sides of the PVC film are clamped by the mutual approach of the fixed blocks 17, and then the two sides of the PVC film will squeeze the moving block 16, so that the inner wall of the moving block 16 slides on the outer wall of the first connecting block 14, thereby compressing the reset spring 15 and driving the first connecting plate 19 to move closer to the first connecting column 13, thereby driving the first rotating shaft 20 to move, and then driving the second rotating shaft 22 to move forward through the second connecting plate 21. The second connecting block 23 and the limiting block 18 are moved, thereby driving the second connecting block 23 and the limiting block 18 to move, so that the inner diameter of the roll-shaped PVC film with different inner diameters can be limited and fixed, thereby realizing the discharge of the roll-shaped PVC film with different diameters without the need for other disassembly and assembly, saving manpower and material resources, and being applicable to PVC films of different widths, increasing the discharge efficiency, thereby solving the problem that the traditional PVC film discharge device often uses an air expansion shaft to discharge the roll-shaped PVC film with different diameters, but when it is used, the air expansion shaft needs to be disassembled, and the roll-shaped PVC film needs to be inserted into the air expansion shaft before installation, and the disassembly and assembly of the air expansion shaft needs to be carried out manually and with corresponding equipment, which will waste a lot of manpower and material resources and affect the discharge efficiency.

[0031] Please see attached Figure 1 , Attachment Figure 2 The adjustment mechanism includes a first slide groove 9, which is arranged on the top of the first mounting frame 2. The first slider 11 is symmetrically slidably connected inside the first slide groove 9. The middle part of the first slider 11 is threadedly connected with a bidirectional screw rod 10. Both ends of the bidirectional screw rod 10 are rotatably connected to both sides of the first slide groove 9. A first servo motor 3 is fixedly connected to one side of the first mounting frame 2. The output end of the first servo motor 3 passes through one side of the first mounting frame 2 and is fixedly connected to one end of the bidirectional screw rod 10. A fixing plate 12 is fixedly connected to the top of the first slider 11.

[0032] Specifically, the operation of the first servo motor 3 drives the bidirectional screw rod 10 to operate, thereby driving the first slider 11 to move away from or closer to each other inside the first slide groove 9, thereby driving the fixed plate 12 to move away from or closer to each other, thereby driving the first connecting column 13, the first connecting block 14, the moving block 16, and the fixed block 17 to move closer to or away from each other, thereby clamping the roll-shaped PVC film of different widths, so that it can be suitable for PVC films of different widths, thereby increasing the practicality of the present invention.

[0033] Please see attached Figure 2-Attached Figure 5 The limiting structure includes a fixed block 17, the circumferential surface of the fixed block 17 is evenly provided with grooves, the grooves on the circumferential surface of the fixed block 17 are evenly provided with second slide grooves 24, the second slide groove 24 is L-shaped, the first rotating shaft 20 and the second rotating shaft 22 are slidably connected to the inside of the second slide groove 24, and the limiting block 18 is slidably connected to the groove on the circumferential surface of the fixed block 17.

[0034] Specifically, the first rotating shaft 20 and the second rotating shaft 22 are limited by the second sliding groove 24 to enhance the stability of their movement, and the limiting block 18 is limited by the groove on the circumferential surface of the fixing block 17 to enhance the stability of its movement, thereby making it convenient to limit and fix the rolled PVC films with different inner diameters.

[0035] Please refer to the attached Figure 1 -Attached Figure 8 The circumferential surface of the first connecting block 14 is evenly provided with grooves, the return spring 15 is located in the groove of the first connecting block 14, the inner wall of the moving block 16 is slidably connected to the outer wall of the first connecting block 14, the bottom of the first mounting frame 2 is fixedly connected with an I-shaped mounting plate 1, and the I-shaped mounting plate 1 is symmetrically fixedly connected with the second mounting plate 6 away from the top of the first mounting frame 2; the upper roller shaft 8 is rotatably connected to the opposite side of the second mounting plate 6, and the second gear 40 is fixedly connected to one side of the upper roller shaft 8. The outer wall of the second gear 40 is meshed with the first gear 39, and the middle part of the first gear 39 is fixedly connected to the lower roller shaft 41. The two ends of the lower roller shaft 41 are rotatably connected to the opposite side of the second mounting plate 6, and one side of one of the second mounting plates 6 is fixedly connected with a second servo motor 7, and the output end of the second servo motor 7 passes through one side of the second mounting plate 6 and is fixedly connected to one end of the lower roller shaft 41, and the lower roller shaft 41 is located below the second gear 40.

[0036] Specifically, the inner wall of the moving block 16 slides with the outer wall of the first connecting block 14 to enhance the stability of the moving block 16 during movement. After a layer of PVC film passes through the top of the third slider 36, it is pulled between the upper roller 8 and the lower roller 41. The second servo motor 7 is operated to drive the lower roller 41 to rotate, thereby driving the first gear 39 to rotate, thereby driving the second gear 40 to rotate, thereby driving the upper roller 8 to rotate, so that the PVC film can be clamped and conveyed between the upper roller 8 and the lower roller 41 to facilitate subsequent processing.

[0037] Please refer to the attached Figure 1 -Attached Figure 7The PVC film thickness detection mechanism includes a second mounting frame 5, a second electric slide rail 32 is fixedly connected to one side of the second mounting frame 5, a third slider 36 is arranged inside the second electric slide rail 32, a laser thickness gauge 34 is arranged at the bottom of the third slider 36, a transition roller 31 is rotatably connected inside the second mounting frame 5, the transition roller 31 is located below the laser thickness gauge 34, and an I-shaped mounting plate 1 is fixedly connected to the bottom of the second mounting frame 5.

[0038] Specifically, after a layer of PVC film passes through the bottom of the adjusting roller 27, it is pulled through the top of the transition roller 31, and then the operation of the second electric slide rail 32 drives the third slider 36 to move horizontally, thereby driving the laser thickness gauge 34 to move, so that the thickness of different areas of the PVC film on the upper surface of the transition roller 31 can be detected according to needs, thereby enhancing the practicality of the present invention.

[0039] Please refer to the attached Figure 1 -Attached Figure 6 A first mounting plate 4 is symmetrically fixedly connected to the top of the I-shaped mounting plate 1, a first electric slide rail 25 is arranged on the side opposite to the first mounting plate 4, a second slider 26 is arranged inside the first electric slide rail 25, an adjusting roller 27 is rotatably connected to the side opposite to the second slider 26, a third rotating shaft 28 is rotatably connected to the side of the second slider 26 away from the adjusting roller 27, a second connecting column 29 is symmetrically fixedly connected to one side of the third rotating shaft 28, a dust removal brush 30 is arranged on the end of the second connecting column 29 away from the third rotating shaft 28, and the dust removal brush 30 is V-shaped.

[0040] Specifically, after the PVC film is clamped and fixed, it is pulled so that a layer of PVC film passes through the bottom of the adjusting roller 27. Through the operation of the first electric slide rail 25, the second slider 26 is driven to move vertically up and down, thereby driving the adjusting roller 27 and the third rotating shaft 28 to move. Therefore, the tension of the PVC film during movement can be adjusted by the adjusting roller 27 to keep it in a straight state, thereby enhancing the accuracy of thickness measurement. The dust on its surface is removed by the dust removal brush 30, thereby further enhancing the accuracy of thickness measurement, making the present invention more practical.

[0041] Please refer to the attached Figure 1 -Attached Figure 7 A dust box 35 is provided in the middle of the I-shaped mounting plate 1, and a dust collector 38 is provided on the top of the dust box 35. The output end of the dust collector 38 is fixedly connected to the inside of the dust box 35, and the input end of the dust collector 38 is symmetrically fixedly connected to a dust suction pipe 37, and the end of the dust suction pipe 37 away from the dust collector 38 is fixedly connected to a dust suction hopper 33, and the bottom of the dust suction hopper 33 is fixedly connected to the top of the I-shaped mounting plate 1, and the dust suction hopper 33 is located below the dust removal brush 30.

[0042] Specifically, through the operation of the vacuum cleaner 38, the dust removed by the dust removal brush 30 is collected through the dust hopper 33 and the dust suction pipe 37, and stored in the dust collection box 35, thereby preventing the removed dust from flying around and affecting the operation of the device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PVC film unloading device, comprising a first mounting frame (2), characterized in that: An adjustment mechanism is provided at the top of the first mounting frame (2), a fixing plate (12) is symmetrically fixedly connected to the top of the adjustment mechanism, a first connecting column (13) is rotatably connected to the opposite side of the fixing plate (12), a first connecting block (14) is fixedly connected to the opposite side of the first connecting column (13), a limiting structure is fixedly connected to the opposite side of the first connecting block (14), a reset spring (15) is evenly fixedly connected to the opposite side of the first connecting column (13), and an end of the reset spring (15) away from the first connecting column (13) is fixedly connected A moving block (16) is provided, and a first connecting plate (19) is evenly and fixedly connected to an opposite side of the moving block (16); one end of the first connecting plate (19) is rotatably connected to a first rotating shaft (20); an outer wall of the first rotating shaft (20) is symmetrically and rotatably connected to a second connecting plate (21); an end of the second connecting plate (21) away from the first rotating shaft (20) is rotatably connected to a second rotating shaft (22); a second connecting block (23) is fixedly connected to the middle of the second rotating shaft (22); and a top of the second connecting block (23) is fixedly connected to a limiting block (18).

2. The PVC film unloading device according to claim 1, characterized in that: The adjustment mechanism comprises a first slide groove (9), the first slide groove (9) is arranged at the top of the first mounting frame (2), the first slide groove (9) is symmetrically slidably connected with a first slider (11) inside, the middle part of the first slider (11) is threadedly connected with a bidirectional screw rod (10), the two ends of the bidirectional screw rod (10) are rotatably connected to the two sides of the first slide groove (9), one side of the first mounting frame (2) is fixedly connected with a first servo motor (3), the output end of the first servo motor (3) passes through one side of the first mounting frame (2) and is fixedly connected to one end of the bidirectional screw rod (10), and the top of the first slider (11) is fixedly connected with a fixing plate (12).

3. The PVC film unloading device according to claim 1, characterized in that: The limiting structure comprises a fixed block (17), the circumferential surface of the fixed block (17) is evenly provided with grooves, the grooves on the circumferential surface of the fixed block (17) are evenly provided with second slide grooves (24), the second slide grooves (24) are L-shaped, the first rotating shaft (20) and the second rotating shaft (22) are slidably connected at both ends inside the second slide grooves (24), and the limiting block (18) is slidably connected in the grooves on the circumferential surface of the fixed block (17).

4. The PVC film unloading device according to claim 1, characterized in that: The circumferential surface of the first connecting block (14) is evenly provided with grooves, the return spring (15) is located in the groove of the first connecting block (14), the inner wall of the moving block (16) is slidably connected to the outer wall of the first connecting block (14), the bottom of the first mounting frame (2) is fixedly connected to an I-shaped mounting plate (1), and the top of the I-shaped mounting plate (1) away from the first mounting frame (2) is symmetrically fixedly connected to a second mounting plate (6).

5. The PVC film unloading device according to claim 4, characterized in that: An upper roller shaft (8) is rotatably connected to the side opposite to the second mounting plate (6), and a second gear (40) is fixedly connected to one side of the upper roller shaft (8). The outer wall of the second gear (40) is meshingly connected to the first gear (39). A lower roller shaft (41) is fixedly connected to the middle of the first gear (39). Both ends of the lower roller shaft (41) are rotatably connected to the side opposite to the second mounting plate (6). A second servo motor (7) is fixedly connected to one side of one of the second mounting plates (6). The output end of the second servo motor (7) passes through one side of the second mounting plate (6) and is fixedly connected to one end of the lower roller shaft (41). The lower roller shaft (41) is located below the second gear (40).

6. A PVC film thickness detection mechanism, comprising a second mounting frame (5), characterized in that: A second electric slide rail (32) is fixedly connected to one side of the second mounting frame (5); a third slider (36) is arranged inside the second electric slide rail (32); a laser thickness gauge (34) is arranged at the bottom of the third slider (36); a transition roller (31) is rotatably connected inside the second mounting frame (5); the transition roller (31) is located below the laser thickness gauge (34); and an I-shaped mounting plate (1) is fixedly connected to the bottom of the second mounting frame (5).

7. The PVC film thickness detection mechanism according to claim 6, characterized in that: The top of the I-shaped mounting plate (1) is symmetrically fixedly connected to a first mounting plate (4); a first electric slide rail (25) is arranged on a side opposite to the first mounting plate (4); a second slider (26) is arranged inside the first electric slide rail (25); an adjusting roller (27) is rotatably connected to the side opposite to the second slider (26); a third rotating shaft (28) is rotatably connected to the side of the second slider (26) away from the adjusting roller (27); a second connecting column (29) is symmetrically fixedly connected to one side of the third rotating shaft (28); a dust removal brush (30) is arranged on the end of the second connecting column (29) away from the third rotating shaft (28); and the dust removal brush (30) is V-shaped.

8. The PVC film thickness detection mechanism according to claim 6, characterized in that: A dust collecting box (35) is arranged in the middle of the I-shaped mounting plate (1), a dust collector (38) is arranged on the top of the dust collecting box (35), an output end of the dust collector (38) is fixedly connected to the inside of the dust collecting box (35), an input end of the dust collector (38) is symmetrically fixedly connected to a dust collecting pipe (37), one end of the dust collecting pipe (37) away from the dust collector (38) is fixedly connected to a dust collecting hopper (33), the bottom of the dust collecting hopper (33) is fixedly connected to the top of the I-shaped mounting plate (1), and the dust collecting hopper (33) is located below the dust removal brush (30).

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