A slitting device in PVC film production

Abstract

The utility model discloses a kind of slitting devices in PVC film production, apply in PVC film production field, including bottom plate, the top of the bottom plate is bolted with two first support plates, bolted with crossbeam between the first support plate;The utility model makes worm gear rotate by rotating worm, worm gear rotation drives shaft to make gear rotate, gear rotation drives slide cylinder to move under the action of tooth plate, the mode that slide cylinder moves makes slitting knife move, can reach the purpose of facilitating adjustment cutter distance, reduce workload, improve the efficiency of adjustment, convenient to use, the utility model moves by rotating first screw rod first screw rod drives pressure plate, pressure plate moves to change the elasticity of spring, to change the pressure between first friction disc and second friction disc, to change friction, to change the mode of tension of film, can reach the purpose of adjusting tension, guarantee the slitting quality of film, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of PVC film production, and in particular to a slitting device for PVC film production. Background Technology

[0002] PVC film is primarily composed of polyvinyl chloride, with other components added to enhance its heat resistance, toughness, and ductility. PVC film can be divided into flexible PVC film and rigid PVC film. In PVC film production, a slitting device is used to cut the PVC film into films of the required width.

[0003] A search of Chinese patents revealed publication number CN212740097U, which discloses a film slitting device. The device includes a main body and a transmission mechanism. A base plate is located at one end of the main body, and a support plate is located at one end of the base plate. The transmission mechanism includes a motor, a first transmission gear, a second transmission gear, and a third transmission gear. A take-up roller is located at one end of the first transmission gear, which passes through the main body. A rotating roller is located at one end of the second transmission gear, and a feeding roller is located at one end of the third transmission gear. A cutter is located on the outer side of the rotating roller, and an adjustment mechanism is installed at one end of the cutter. The adjustment mechanism includes a retainer and a tightening screw. This film slitting device allows for easy adjustment of the distance between the two cutters according to production needs. The cutters are securely installed, their positions are adjustable, and it can produce films of different widths. The device is easy to operate, has a simple structure, and does not require multiple motors.

[0004] Existing slitting devices are not convenient for adjusting the blade spacing. Generally, the slitting blades of slitting devices are fixed to the crossbeam with bolts. When adjusting the blade spacing, tools are needed to remove the bolts, then adjust the blade spacing to the required position, and then tighten the bolts to fix it. The entire adjustment process is cumbersome, increases workload, and reduces adjustment efficiency. It also lacks a tensioning function, which can easily lead to uneven tension in the film during the slitting process, causing problems such as wrinkles and stretching deformation of the film, affecting the slitting effect and dimensional accuracy of the film, and impacting the slitting quality. It is also inconvenient to use. In order to solve the above problems, we propose a slitting device for PVC film production. Utility Model Content

[0005] The purpose of this invention is to provide a slitting device for PVC film production, which has the advantages of easy adjustment of blade spacing and tensioning function.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a slitting device for PVC film production, comprising a base plate, two first support plates bolted to the top of the base plate, a crossbeam bolted between the first support plates, a plurality of slide cylinders slidably sleeved on the surface of the crossbeam, a first fixed shell bolted to the top of the slide cylinders, a worm gear rotatably sleeved between the inner walls of the first fixed shells, a worm wheel meshing on the surface of the worm gear, a rotating shaft fixedly sleeved at the axis of the worm wheel, and the rotating shaft rotatably sleeved with the inner wall of the slide cylinder, a gear fixedly sleeved at the bottom of the rotating shaft, a toothed plate meshing on the surface of the gear, a sliding groove opened on the surface of the crossbeam, and the toothed plate embedded in the inner wall of the sliding groove, and a cutting mechanism provided at the bottom of the slide cylinder.

[0007] By adopting the above technical solution, the worm gear is rotated to make the worm wheel rotate, the worm wheel rotates to drive the shaft to rotate the gear, the gear rotates to drive the slide cylinder to move under the action of the gear plate, and the slide cylinder moves the slitting blade. This method can achieve the purpose of easy adjustment of the blade distance, reduce the workload, improve the adjustment efficiency, and make it convenient to use.

[0008] The present invention is further configured as follows: two second support plates are bolted to the top of the base plate; a first guide roller is rotatably sleeved between the second support plates; a second fixed shell is bolted to the surface of the second support plates; a first screw is threaded to the inner wall of the second fixed shell; a pressure plate is rotatably connected to the inner end of the first screw; a slide rod is slidably sleeved on the inner wall of the pressure plate; both ends of the slide rod are bolted to the inner wall of the second fixed shell and the surface of the second support plate, respectively; a first friction disc is slidably sleeved on the surface of the slide rod; the first friction disc penetrates the surface of the first guide roller; a spring is provided between the first friction disc and the pressure plate; a second friction disc is fixedly sleeved on both ends of the first guide roller; the first friction disc and the second friction disc are in contact; and an adjustment mechanism is provided between the second support plates.

[0009] By adopting the above technical solution, the first screw is rotated to move the pressure plate. The movement of the pressure plate changes the elastic force of the spring, thereby changing the pressure between the first friction disc and the second friction disc, thus changing the friction force and the tension of the film. This method can achieve the purpose of adjusting the tension, ensuring the slitting quality of the film and making it convenient to use.

[0010] The present invention is further configured such that: the cutting mechanism includes a blade holder, the blade holder is bolted to the bottom of the slide cylinder, a slidable cutting blade is slidably connected to the inner wall of the blade holder, and a fixing bolt is threadedly connected to the inner walls of the blade holder and the slid cutting blade.

[0011] By adopting the above technical solution, a cutting mechanism is set up to remove the fixing bolts and take out the slitting blade, which facilitates the replacement of the slitting blade.

[0012] The present invention is further configured such that: the adjusting mechanism includes a slide groove, the slide groove is formed on the surface of the second support plate, a slider is slidably connected to the inner wall of the slide groove, a second guide roller is rotatably connected between the sliders, and a second screw is threadedly connected to the inner wall of the slider, and the second screw is rotatably sleeved with the inner wall of the slide groove.

[0013] By adopting the above technical solution, and by setting an adjustment mechanism, rotating the second screw causes the slider to move the second guide roller, the pressure of the second guide roller can be adjusted to prevent film slippage and improve stability.

[0014] The present invention is further configured such that the surface of the crossbeam is printed with scale lines.

[0015] By adopting the above technical solution, the tool spacing can be easily adjusted by setting scale lines.

[0016] The present invention is further configured such that a fixing nut is threaded onto the surface of the first screw.

[0017] By adopting the above technical solution, the first screw is fixed by setting a fixing nut, thereby improving stability.

[0018] The present invention is further configured such that: a guide rod is bolted to the surface of the first friction disc, and the guide rod is slidably sleeved with the inner wall of the pressure plate, and a spring is sleeved on the surface of the guide rod.

[0019] By adopting the above technical solution, the spring is fixed by setting a guide rod to prevent spring displacement and improve stability.

[0020] The present invention is further configured such that a third guide roller is bolted to the top of the base plate.

[0021] By adopting the above technical solution, a third guide roller is set to guide the film, which facilitates subsequent winding.

[0022] In summary, this utility model has the following beneficial effects:

[0023] 1. This utility model achieves the purpose of easy adjustment of blade distance by rotating the worm gear to make the worm wheel rotate, the rotation of the worm wheel drives the rotating shaft to rotate the gear, the rotation of the gear drives the slide cylinder to move under the action of the toothed plate, and the movement of the slide cylinder moves the slitting blade. This reduces the workload, improves the adjustment efficiency, and is convenient to use.

[0024] 2. This utility model achieves the purpose of adjusting the tension by rotating the first screw, which drives the pressure plate to move. The movement of the pressure plate changes the elastic force of the spring, thereby changing the pressure between the first friction disc and the second friction disc, thus changing the friction force and the tension of the film. This ensures the slitting quality of the film and is convenient to use. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural view of the present invention;

[0026] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0027] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0028] Figure 4 This is a top sectional view of a partial structure of this utility model;

[0029] Figure 5 This is a utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0030] Reference numerals: 1. Base plate; 2. First support plate; 3. Crossbeam; 4. Slide cylinder; 5. First fixed shell; 6. Worm gear; 7. Worm wheel; 8. Rotating shaft; 9. Gear; 10. Tooth plate; 11. Sliding groove; 12. Cutting mechanism; 13. Second support plate; 14. First guide roller; 15. Second fixed shell; 16. First screw; 17. Pressure plate; 18. Slide rod; 19. First friction disc; 20. Spring; 21. Second friction disc; 22. Adjusting mechanism; 23. Knife holder; 24. Sliding knife; 25. Fixing bolt; 26. Slide groove; 27. Sliding block; 28. Second guide roller; 29. ​​Second screw; 30. Scale line; 31. Fixing nut; 32. Guide rod; 33. Third guide roller. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Example 1:

[0033] refer to Figure 1 , Figure 2 and Figure 4A slitting device for PVC film production includes a base plate 1. Two first support plates 2 are bolted to the top of the base plate 1. A crossbeam 3 is bolted between the first support plates 2. Multiple slide cylinders 4 are slidably sleeved on the surface of the crossbeam 3. A first fixed shell 5 is bolted to the top of the slide cylinders 4. A worm gear 6 is rotatably sleeved between the inner walls of the first fixed shells 5. A worm wheel 7 meshes with the surface of the worm gear 6. A rotating shaft 8 is fixedly sleeved at the axis of the worm wheel 7 and rotatably sleeved with the inner wall of the slide cylinder 4. A gear 9 is fixedly sleeved at the bottom of the rotating shaft 8. The surface of gear 9 is meshed with toothed plate 10, and the surface of crossbeam 3 is provided with sliding groove 11, with toothed plate 10 embedded in the inner wall of sliding groove 11. Cutting mechanism 12 is provided at the bottom of slide cylinder 4. By rotating worm gear 6, worm wheel 7 is rotated, and worm wheel 7 rotates to drive shaft 8 to rotate gear 9. The rotation of gear 9 drives slide cylinder 4 to move under the action of toothed plate 10. The movement of slide cylinder 4 causes slitting blade 24 to move. This method can achieve the purpose of easy adjustment of blade distance, reduce workload, improve adjustment efficiency, and facilitate use.

[0034] refer to Figure 2 The cutting mechanism 12 includes a blade holder 23, which is bolted to the bottom of the slide cylinder 4. A slidable cutting blade 24 is slidably connected to the inner wall of the blade holder 23. A fixing bolt 25 is threadedly connected to the inner walls of the blade holder 23 and the slid cutting blade 24. By setting the cutting mechanism 12, the fixing bolt 25 can be removed and the slid cutting blade 24 can be taken out for easy replacement of the slid cutting blade 24.

[0035] refer to Figure 1 The surface of the crossbeam 3 is printed with scale lines 30, which facilitates the adjustment of the blade distance.

[0036] refer to Figure 1 A third guide roller 33 is bolted to the top of the base plate 1. By setting the third guide roller 33, the film is guided to facilitate subsequent winding.

[0037] Example 2:

[0038] refer to Figure 1 , Figure 3 and Figure 5Two second support plates 13 are bolted to the top of the base plate 1. A first guide roller 14 is rotatably sleeved between the second support plates 13. A second fixed shell 15 is bolted to the surface of the second support plates 13. A first screw 16 is threaded to the inner wall of the second fixed shell 15. A pressure plate 17 is rotatably connected to the inner end of the first screw 16. A slide rod 18 is slidably sleeved on the inner wall of the pressure plate 17. The two ends of the slide rod 18 are respectively bolted to the inner wall of the second fixed shell 15 and the surface of the second support plate 13. A first friction disc 19 is slidably sleeved on the surface of the slide rod 18. The first friction disc 19 penetrates the surface of the first guide roller 14. A spring 20 is provided between the rubbing disc 19 and the pressure plate 17. The two ends of the first guide roller 14 are fixedly sleeved with second friction discs 21, and the first friction disc 19 and the second friction disc 21 are in contact. An adjustment mechanism 22 is provided between the second support plates 13. By rotating the first screw 16, the first screw 16 drives the pressure plate 17 to move. The movement of the pressure plate 17 changes the elastic force of the spring 20, thereby changing the pressure between the first friction disc 19 and the second friction disc 21, thus changing the friction force, and thus changing the tension of the film. This method can achieve the purpose of adjusting the tension, ensuring the slitting quality of the film and making it convenient to use.

[0039] refer to Figure 3 The adjusting mechanism 22 includes a slide groove 26, which is formed on the surface of the second support plate 13. A slider 27 is slidably connected to the inner wall of the slide groove 26. A second guide roller 28 is rotatably connected between the sliders 27. A second screw 29 is threadedly connected to the inner wall of the slider 27, and the second screw 29 is rotatably sleeved with the inner wall of the slide groove 26. By setting the adjusting mechanism 22, rotating the second screw 29 causes the slider 27 to drive the second guide roller 28 to move, which can adjust the pressure of the second guide roller 28, prevent the film from slipping, and improve stability.

[0040] refer to Figure 1 and Figure 5 The first screw 16 is threaded with a fixing nut 31. By setting the fixing nut 31, the first screw 16 is fixed and the stability is improved.

[0041] refer to Figure 5 A guide rod 32 is bolted to the surface of the first friction disc 19, and the guide rod 32 is slidably sleeved with the inner wall of the pressure plate 17. The spring 20 is sleeved on the surface of the guide rod 32. By setting the guide rod 32, the spring 20 is fixed to prevent the spring 20 from shifting and to improve stability.

[0042] Brief description of the usage process: The film passes between the first guide roller 14 and the second guide roller 28, then through the slitting blade 24, and then through the third guide roller 33 to connect with the winding device. During winding, the film moves, and the slitting blade 24 cuts the film, thus achieving the purpose of slitting. Rotating the worm gear 6 drives the worm wheel 7 to rotate, which in turn drives the rotating shaft 8 to rotate. The rotating shaft 8 drives the gear 9 to rotate, and the gear 9, under the action of the toothed plate 10, drives the slide cylinder 4 to move. The movement of the slide cylinder 4 moves the slitting blade 24 to the desired position. Stop rotating the worm gear 6. The worm gear 6 and the worm wheel 7 have self-locking properties, moving to the desired position. After placement, it automatically locks, thus facilitating the adjustment of the blade distance. Loosening the fixing nut 31 and rotating the first screw 16 causes the first screw 16 to move the pressure plate 17. The movement of the pressure plate 17 changes the elastic force of the spring 20, which in turn changes the pressure between the first friction disc 19 and the second friction disc 21, thereby changing their friction and thus changing the rotational resistance of the first guide roller 14, which in turn changes the tension of the film, thus achieving the purpose of tensioning. By rotating the second screw 29, the slider 27 moves the second guide roller 28, which can adjust the pressure of the second guide roller 28, prevent the film from slipping, and improve stability.

[0043] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0044] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A slitting device for PVC film production, comprising a base plate (1), characterized in that, Two first support plates (2) are bolted to the top of the base plate (1). A crossbeam (3) is bolted between the first support plates (2). Multiple slide cylinders (4) are slidably sleeved on the surface of the crossbeam (3). A first fixed shell (5) is bolted to the top of the slide cylinder (4). A worm gear (6) is rotatably sleeved between the inner walls of the first fixed shell (5). A worm wheel (7) is meshed on the surface of the worm gear (6). A rotating shaft (8) is fixedly sleeved at the axis of the worm wheel (7). The rotating shaft (8) is rotatably sleeved with the inner wall of the slide cylinder (4). A gear (9) is fixedly sleeved at the bottom of the rotating shaft (8). A toothed plate (10) meshes on the surface of the gear (9). A sliding groove (11) is opened on the surface of the crossbeam (3). The toothed plate (10) is embedded in the inner wall of the sliding groove (11). A cutting mechanism (12) is provided at the bottom of the slide cylinder (4).

2. The slitting device for PVC film production according to claim 1, characterized in that, Two second support plates (13) are bolted to the top of the base plate (1). A first guide roller (14) is rotatably sleeved between the second support plates (13). A second fixed shell (15) is bolted to the surface of the second support plate (13). A first screw (16) is threadedly connected to the inner wall of the second fixed shell (15). A pressure plate (17) is rotatably connected to the inner end of the first screw (16). A slide rod (18) is slidably sleeved on the inner wall of the pressure plate (17), and both ends of the slide rod (18) are respectively connected to the second fixed shell (15). The inner wall and the surface of the second support plate (13) are bolted together. The surface of the slide rod (18) is slidably sleeved with the first friction disc (19), and the first friction disc (19) is connected to the surface of the first guide roller (14). A spring (20) is provided between the first friction disc (19) and the pressure plate (17). The two ends of the first guide roller (14) are fixedly sleeved with the second friction disc (21), and the first friction disc (19) and the second friction disc (21) are in contact. An adjustment mechanism (22) is provided between the second support plates (13).

3. A slitting device for PVC film production according to claim 1, characterized in that, The cutting mechanism (12) includes a blade holder (23), which is bolted to the bottom of the slide cylinder (4). A sliding blade (24) is slidably connected to the inner wall of the blade holder (23), and a fixing bolt (25) is threadedly connected to the inner walls of the blade holder (23) and the sliding blade (24).

4. A slitting device for PVC film production according to claim 2, characterized in that, The adjusting mechanism (22) includes a slide groove (26), which is formed on the surface of the second support plate (13). A slider (27) is slidably connected to the inner wall of the slide groove (26). A second guide roller (28) is rotatably connected between the sliders (27). A second screw (29) is threadedly connected to the inner wall of the slider (27), and the second screw (29) is rotatably sleeved with the inner wall of the slide groove (26).

5. A slitting device for PVC film production according to claim 1, characterized in that, The surface of the crossbeam (3) is printed with scale lines (30).

6. A slitting device for PVC film production according to claim 2, characterized in that, The first screw (16) has a fixed nut (31) threadedly connected to its surface.

7. A slitting device for PVC film production according to claim 2, characterized in that, A guide rod (32) is bolted to the surface of the first friction disc (19), and the guide rod (32) is slidably sleeved with the inner wall of the pressure plate (17), and a spring (20) is sleeved on the surface of the guide rod (32).

8. A slitting device for PVC film production according to claim 1, characterized in that, A third guide roller (33) is bolted to the top of the base plate (1).

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