Plastic film thickness uniformity regulation and control device
By designing adjustable adjustment rollers and moving devices, precise control of plastic film thickness and tension was achieved, solving the problems of uneven thickness and unstable tension, and improving the flexibility of the production line and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-04-07
AI Technical Summary
It is difficult to uniformly adjust the thickness and tension of plastic film during the production and stretching process, resulting in uneven thickness, which affects product quality and may cause wrinkles and misalignment.
A plastic film thickness uniformity control device was designed. Through an adjustable adjustment roller and a moving device, and using a threaded rod, gear transmission and motor drive, the film thickness and tension can be precisely controlled.
This ensures uniform thickness and tension stability of the film during stretching, prevents wrinkles and shifts, and improves the flexibility and applicability of the production line.
Smart Images
Figure CN224089660U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic film production and processing technology, specifically to a plastic film thickness uniformity control device. Background Technology
[0002] Plastic film refers to films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins. Generally, sheet-like plastics with a thickness of less than 0.25 mm are called films. The production of plastic films is mainly accomplished through production processes such as casting, calendering, and extrusion blown film. Films are further classified into barrier films, heat-sealing films, and light-blocking films.
[0003] During the stretching process of some plastic films, it is difficult to adjust their thickness uniformly. Inappropriate thickness will affect the quality of the product. The inability to flexibly adjust the film thickness according to the needs reduces the flexibility and applicability of the production line and may also lead to uneven thickness. The tension of the film will also be affected, resulting in wrinkles and displacement of the film. Utility Model Content
[0004] To address the problem of difficulty in adjusting film thickness and tension, the purpose of this invention is to provide a device for uniformly controlling the thickness of plastic films.
[0005] To solve the above technical problems, this utility model adopts the following technical solution: a plastic film thickness uniformity control device, including a first bracket, two adjusting rollers rotatably disposed between the inner walls of both sides of the first bracket, a second bracket fixedly mounted on one end of the first bracket, a moving device fixedly connected to the upper surface of the second bracket, slots formed on both outer surfaces of the first bracket, adjusting plates slidably connected to one inner surface of each of the two slots, one end of one adjusting roller rotatably connected to one side of each of the two adjusting plates, a sleeve plate slidably connected to the other inner surface of the slots, a threaded rod threadedly inserted into the inner surface of the sleeve plate, one end of the threaded rod rotatably connected to one end of the adjusting plate, and one adjusting roller rotatably connected to the other end of the adjusting plate. One end of the plate is fixedly fitted with a first gear, and one end of the other adjustment plate is fixedly fitted with a fourth gear. A motor is fixedly installed on one side of the first bracket, and the output end of the motor is fixedly connected to one end of the other adjustment plate. A second gear and a third gear are rotatably connected to the outer surface of one side of the first bracket. One end of the first gear is rotatably fitted with a first connecting plate. One end of the first connecting plate is rotatably connected to one end of the second gear. One end of the second gear and one end of the third gear are rotatably fitted with a second connecting plate. The outer surface of the second gear is meshed with the outer surface of the third gear. The outer surface of the third gear is meshed with the outer surface of the fourth gear. The outer surface of the first gear is meshed with the outer surface of the third gear.
[0006] Preferably, the moving device includes two support plates, a lead screw is rotatably connected between the inner walls of the two sides of the support plates, a second bevel gear is fixedly connected to one end of the lead screw, a slider is threaded onto the outer surface of the lead screw, a film-pulling roller is rotatably provided at one end of the two sliders, and a drive shaft is inserted and connected to one side of the two support plates, and two first bevel gears are fixedly sleeved on the outer surface of the drive shaft.
[0007] Preferably, the bottom end of the first bracket is fixedly connected to four support legs, and the four support legs are distributed in a rectangular array.
[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0009] 1. This utility model, by setting an adjustable adjustment roller, allows the adjustment roller to move at different intervals under the rotation of the threaded rod, which helps to uniformly control the thickness of the film during the stretching process and ensures that the film maintains a stable shape during the stretching process. Attached Figure Description
[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] Figure 2 This is a partial structural diagram of the present utility model.
[0013] Figure 3 This is a schematic diagram of the structure of the mobile device of this utility model.
[0014] In the diagram: 1. First support; 2. Second support; 3. Moving device; 10. Adjusting roller; 11. Slot; 12. Sleeve plate; 13. Adjusting plate; 14. First gear; 15. Fourth gear; 16. Second gear; 17. Third gear; 18. First connecting plate; 19. Second connecting plate; 20. Motor; 21. Threaded rod; 30. Slider; 31. Support plate; 32. Lead screw; 33. Drive shaft; 34. First bevel gear; 35. Second bevel gear; 37. Film pulling roller. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Example: Figure 1-3 As shown, this utility model provides a plastic film thickness uniformity control device, including a first support 1. Two adjusting rollers 10 are rotatably arranged between the inner walls of both sides of the first support 1. A second support 2 is fixedly installed at one end of the first support 1. A moving device 3 is fixedly connected to the upper surface of the second support 2. Slots 11 are opened on both outer surfaces of the first support 1. Adjusting plates 13 are slidably connected to the inner surface of one side of each slot 11. The two ends of one adjusting roller 10 are rotatably connected to one side of each of the two adjusting plates 13. A sleeve plate 12 is slidably connected to the inner surface of the other side of the slot 11. A threaded rod 21 is threadedly inserted into the inner surface of the sleeve plate 12. One end of the threaded rod 21 is rotatably connected to one end of the adjusting plate 13. A first gear 14 is fixedly sleeved at one end of one adjusting plate 13, and a fourth gear 15 is fixedly sleeved at one end of the other adjusting plate 13. A motor 20 is fixedly installed on one side of the first support 1. The output end of the motor 20 is connected to the other adjusting plate 13. The first bracket 1 has a fixed connection at one end. A second gear 16 and a third gear 17 are rotatably connected to the outer surface of one side of the first bracket 1. A first connecting plate 18 is rotatably sleeved at one end of the first gear 14. One end of the first connecting plate 18 is rotatably connected to one end of the second gear 16. One end of the second gear 16 and one end of the third gear 17 are rotatably sleeved to a second connecting plate 19. The outer surface of the second gear 16 meshes with the outer surface of the third gear 17. The outer surface of the third gear 17 meshes with the outer surface of the fourth gear 15. The outer surface of the first gear 14 meshes with the outer surface of the third gear 17. Under the continuous transmission of the fourth gear 15, the third gear 17, the second gear 16, and the first gear 14, the two adjusting rollers 10 are driven to perform an extended conveying motion. The operator drives the two adjusting plates 13 to slide linearly between the slots 11 by rotating the threaded rods 21 on both sides, thereby helping the adjusting roller 10 on one side to move and adjusting the distance between the two adjusting rollers 10.
[0017] The moving device 3 includes two support plates 31. A lead screw 32 is rotatably connected between the inner walls of the two sides of the support plates 31. A second bevel gear 35 is fixedly connected to one end of the lead screw 32. A slider 30 is threaded onto the outer surface of the lead screw 32. A film-pulling roller 37 is rotatably mounted on one end of the two sliders 30. A drive shaft 33 is inserted and connected to one side of the two support plates 31. Two first bevel gears 34 are fixedly mounted on the outer surface of the drive shaft 33. The operator can rotate the drive shaft 33 to synchronously drive the two lead screws 32 to rotate under the transmission of the first bevel gears 34 and the second bevel gears 35. The rotating lead screws 32 synchronously drive the two sliders 30 to slide horizontally along the inner wall of the support plate 31, thereby driving the film-pulling roller 37 to adjust its position. This allows the tension of the film to be adjusted during the conveying process by the moving film-pulling roller 37, so as to achieve uniform tension control.
[0018] The two adjusting rollers 10 are the same size, and the outer surfaces of both adjusting rollers 10 are smooth. The slots 11, sleeves 12, adjusting plates 13, and threaded rods 21 are all mirror-distributed. A handwheel is fixedly sleeved on one end of the threaded rod 21 and the drive shaft 33. The two adjusting rollers 10 of the same size are to help the film pass through the gap between the two adjusting rollers 10 better, reducing friction and damage to the film. The mirror-distributed slots 11, sleeves 12, adjusting plates 13, and threaded rods 21 are to ensure that the adjustment on both sides can work synchronously, so that both sides always move on the same horizontal line. The handwheel is to facilitate manual adjustment by the operator. The four support feet at the bottom of the first support 1 are parallel to one side of the bottom of the second support 2 to ensure the stability and balance of the device during operation.
[0019] One end of the drive shaft 33 is rotatably connected to the inner wall of one side of the support plate 31, and the two first bevel gears 34 are respectively meshed with the outer surfaces of the two second bevel gears 35. The lead screw 32 and the slider 30 are mirror images of each other, and the outer surface of the slider 30 slides against the inner wall of the support plate 31. During the rotation of the drive shaft 33, the two lead screws 32 can be driven to rotate synchronously through the transmission of the first bevel gears 34 and the second bevel gears 35, so that the two lead screws 32 rotate in the same number of revolutions, which helps the two sliders 30 to drive the film-pulling roller 37 to move horizontally in a synchronous state.
[0020] Working principle: When film thickness adjustment is required, motor 20 is started. The output of motor 20 drives one of the adjusting rollers 10 to rotate. The rotating adjusting roller 10 drives the fourth gear 15 to rotate, which in turn drives the third gear 17 to rotate, which in turn drives the second gear 16 to rotate. The rotating second gear 16 drives the first gear 14 to rotate, thereby stretching the plastic film through the space between the two adjusting rollers 10 to the conveying area of the equipment. When the distance between the two adjusting rollers 10 needs to be adjusted, the operator rotates the two threaded rods 21 by handwheel. During the rotation of the two rotating threaded rods 21, the adjusting plate 13 slides linearly on the outer surface of the slot 11. This causes the first gear 14 connected to one end of the adjusting plate 13 to move slightly along with the rotation of the second gear 16 through the rotation of the first connecting plate 18. As the adjusting plate 13 moves, the distance between the two adjusting rollers 10 is adjusted, thereby controlling the thickness of the film during the stretching and conveying process.
[0021] When further adjustments are needed, the operator rotates the drive shaft 33 via the handwheel, causing the two first bevel gears 34 to rotate. During the rotation of the first bevel gears 34, the two second bevel gears 35 drive the two lead screws 32 to rotate horizontally. This causes the sliders 30 at both ends of the film-stretching roller 37 to move synchronously under the action of the lead screws 32, thereby driving the film-stretching roller 37 to move horizontally. The film adheres to the outer surface of the film-stretching roller 37 for conveying. During the movement of the film-stretching roller 37, it helps to achieve uniform tension control of the film, preventing wrinkles or deviations from occurring during the stretching or conveying process.
[0022] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A plastic film thickness uniformity control device, comprising a first support (1), characterized in that: Two adjusting rollers (10) are rotatably provided between the inner walls on both sides of the first bracket (1). A second bracket (2) is fixedly installed at one end of the first bracket (1). A moving device (3) is fixedly connected to the upper surface of the second bracket (2). The first bracket (1) has slots (11) on both outer surfaces. Adjusting plates (13) are slidably connected to the inner surfaces of one side of each slot (11). One end of an adjusting roller (10) is rotatably connected to one side of each of the two adjusting plates (13). A sleeve plate (12) is slidably connected to the inner surface of the other side of each slot (11). A threaded rod (21) is threadedly inserted into the inner surface of the sleeve plate (12). One end of the threaded rod (21) is rotatably connected to one end of an adjusting plate (13). One end of one adjusting plate (13) is fixedly fitted with a first gear (14), and one end of the other adjusting plate (13) is fixedly fitted with a fourth gear (15). A motor (20) is fixedly installed on one side of the first bracket (1). The output end of the machine (20) is fixedly connected to one end of another adjusting plate (13). A second gear (16) and a third gear (17) are rotatably connected to one side of the outer surface of the first bracket (1). A first connecting plate (18) is rotatably sleeved on one end of the first gear (14). One end of the first connecting plate (18) is rotatably connected to one end of the second gear (16). A second connecting plate (19) is rotatably sleeved on one end of the second gear (16) and one end of the third gear (17). The outer surface of the second gear (16) meshes with the outer surface of the third gear (17). The outer surface of the third gear (17) meshes with the outer surface of the fourth gear (15). The outer surface of the first gear (14) meshes with the outer surface of the third gear (17).
2. The plastic film thickness uniformity control device as described in claim 1, characterized in that, The moving device (3) includes two support plates (31). A lead screw (32) is rotatably connected between the inner walls of the two sides of the support plate (31). A second bevel gear (35) is fixedly connected to one end of the lead screw (32). A slider (30) is threaded onto the outer surface of the lead screw (32). A film-pulling roller (37) is rotatably provided at one end of the two sliders (30). A drive shaft (33) is inserted and connected to one side of the two support plates (31). Two first bevel gears (34) are fixedly sleeved on the outer surface of the drive shaft (33).
3. The plastic film thickness uniformity control device as described in claim 1, characterized in that, The two adjusting rollers (10) are the same size, and the outer surfaces of the two adjusting rollers (10) are smoothed.
4. The plastic film thickness uniformity control device as described in claim 1, characterized in that, The slot (11), sleeve (12), adjusting plate (13), and threaded rod (21) are all mirror-shaped.
5. The plastic film thickness uniformity control device as described in claim 1, characterized in that, A handwheel is fixedly sleeved at one end of both the threaded rod (21) and the transmission shaft (33).
6. The plastic film thickness uniformity control device as described in claim 2, characterized in that, One end of the drive shaft (33) is rotatably connected to the inner wall of one side of the support plate (31), and the two first bevel gears (34) are respectively meshed with the outer surfaces of the two second bevel gears (35).
7. The plastic film thickness uniformity control device as described in claim 2, characterized in that, The lead screw (32) and the slider (30) are mirror images of each other, and the outer surface of the slider (30) slides against the inner wall of the support plate (31).
8. The plastic film thickness uniformity control device as described in claim 1, characterized in that, The bottom end of the first bracket (1) is fixedly connected with four support legs, and the four support legs are distributed in a rectangular array.