Cooling device for film production

Abstract

The utility model discloses a cooling device for thin film production, which belongs to the technical field of thin film production equipment and is technically characterized by comprising a cooling device shell and two traction rollers arranged in the cooling device shell in a staggered manner, a water tank is arranged on one side of the cooling device shell, and a water outlet is formed in the other side of the cooling device shell. Two cover plates are symmetrically and rotationally connected to the top face of the water tank through hinges, and a water pump is installed on the surface of the water tank. Cooling water is atomized through the atomization nozzles and then sprayed to the inner wall of the aluminum traction roller, heat is absorbed through rapid evaporation of small water drops, instant cooling of a film is achieved, and the cooling effect is good. Scraping plates are matched with an exhaust fan and a dust collection system, scraped dust is collected into a dust collection box in a centralized mode, the situation that the dust is attached to the surface of a thin film, and consequently the product quality is affected is avoided, water vapor generated in a traction roller is sucked into a water tank through a first exhaust fan, part of the water vapor is condensed and then fused into cooling water again, and the other part of the water vapor is absorbed by sponge; the water resource waste is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of thin film production equipment, specifically relating to a cooling device for thin film production. Background Technology

[0002] Plastic film is a thin, flexible sheet material made of plastic. It typically has a transparent or translucent appearance and can be used for packaging, covering, and protecting various items. It possesses good tensile strength and durability, and offers waterproof, dustproof, and preservation functions, thus finding wide application across various fields. In the production process of plastic film, an extruder is usually used to heat the plastic material and extrude it through an extrusion head into a continuous film. During this process, the plastic is heated to a molten state, becoming soft and easy to process; however, if it is not cooled and solidified in time, the plastic film may lose its desired shape and properties.

[0003] A search revealed a Chinese patent with publication number CN220841383U, which discloses a cooling device for plastic film production. However, it still has the following defects: directly spraying air and water onto the film surface will cause the film to bear weight and experience uncontrollable shaking and stretching, which will cause the film to wrinkle when it is rolled up. Utility Model Content

[0004] The purpose of this invention is to provide a cooling device for thin film production to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a cooling device housing and two traction rollers staggered inside the cooling device housing. A water tank is provided on one side of the cooling device housing. Two cover plates are symmetrically connected to the top surface of the water tank via hinges. A water pump is installed on the surface of the water tank. A first water pipe is installed at the output end of the water pump. A positioning cylinder is provided inside the traction rollers. The positioning cylinder and the traction rollers are rotatably connected. Several holes are evenly distributed on the surface of the positioning cylinder. A filter screen is installed at one end of the positioning cylinder. The end of the filter screen away from the positioning cylinder is connected to the first water pipe. A limit shell is rotatably connected to the end of the traction roller away from the filter screen. A one-way valve is installed on the surface of the limit shell.

[0006] As a further improvement of this utility model, each of the positioning cylinders has an atomizing nozzle installed inside its hole.

[0007] As a further embodiment of this utility model, a first exhaust pipe is installed on the surface of the limiting shell via a flange, a first exhaust fan is installed on the top surface of the cooling device shell, an air collecting pipe is fixedly connected to the input end of the first exhaust fan via a flange, the end of the first exhaust pipe away from the limiting shell is fixedly connected to the air collecting pipe, a second exhaust pipe is installed on the output end of the first exhaust fan via a flange, a semi-circular hole is opened on the adjacent side of the two cover plates, and the end of the second exhaust pipe away from the first exhaust fan is inserted into the interior of the semi-circular hole.

[0008] As a further embodiment of this invention, a layer of sponge is attached to the bottom surface of each cover plate.

[0009] As a further embodiment of this utility model, two scrapers are fixedly connected to the inner wall of the cooling device housing, and the scrapers are in contact with the traction roller.

[0010] As a further embodiment of this utility model, a dust collection head is fixedly connected to the surface of the scraper by bolts, and a cover plate is inserted into the surface of the dust collection head. A dust collection pipe is fixedly connected to the outer surface of the cooling device housing, and the two ends of the dust collection pipe are respectively connected to two second suction pipes. A dust collection box is provided on one side of the cooling device housing, and a second exhaust fan is installed on the surface of the dust collection box. A first suction pipe is installed at the output end of the second exhaust fan through a flange, and the end of the first suction pipe away from the second exhaust fan is connected to the dust collection pipe.

[0011] As a further embodiment of this utility model, the top surface of the dust collection box is rotatably connected to a mesh plate via a hinge, and the bottom surface of the mesh plate is fitted with a filter screen via bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model uses an atomizing nozzle to spray cooling water onto the inner wall of an aluminum traction roller. The heat is absorbed by the rapid evaporation of the fine water droplets, thus achieving instantaneous cooling of the film.

[0014] 2. This utility model, by incorporating a scraper, a blower, and a dust collection system, can not only remove dust and debris from the surface of the traction roller, but also collect the scraped-off dust into a dust collection box, thus preventing dust from adhering to the film surface and affecting product quality.

[0015] 3. This utility model incorporates a first exhaust fan to draw water vapor generated within the traction roller into a water tank. Part of the water vapor condenses and re-integrates into the cooling water, while the remainder is absorbed by a sponge, reducing water waste. The water tank is continuously replenished with fresh cooling water, ensuring stable water temperature and preventing water vapor backflow from causing temperature increases that would affect the cooling effect, thus achieving sustainable operation of the cooling system. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the water tank and cover plate structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the scraper and dust collection head structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the sponge and cover plate structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the vertical cross-sectional structure of the traction roller of this utility model.

[0021] In the diagram: 1. Cooling device housing; 2. Traction roller; 3. Water tank; 4. Water pump; 5. First water pipe; 6. Positioning cylinder; 7. Atomizing nozzle; 8. Limiting shell; 9. One-way valve; 10. First exhaust fan; 11. Air collection pipe; 12. First exhaust pipe; 13. Second exhaust pipe; 14. Cover plate; 15. Sponge; 16. Dust collection pipe; 17. First suction pipe; 18. Second exhaust fan; 19. Dust collection box; 20. Mesh plate; 21. Filter screen; 22. Scraper; 23. Dust collection head; 24. Second suction pipe. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-5This utility model provides a cooling device for film production, including a cooling device housing 1 and two traction rollers 2 staggered inside the cooling device housing 1. A water tank 3 is provided on one side of the cooling device housing 1. The top surface of the water tank 3 is symmetrically connected to two cover plates 14 via hinges. A water pump 4 is installed on the surface of the water tank 3, and a first water pipe 5 is installed at the output end of the water pump 4. A positioning cylinder 6 is provided inside the traction roller 2, and the positioning cylinder 6 is rotatably connected to the traction roller 2. Several holes are evenly opened on the surface of the positioning cylinder 6. A filter screen 21 is installed at one end of the positioning cylinder 6. The end of the filter screen 21 away from the positioning cylinder 6 is connected to the first water pipe 5. A limit shell 8 is rotatably connected to the end of the traction roller 2 away from the filter screen 21. A one-way valve 9 is installed on the surface of the limit shell 8. An atomizing nozzle 7 is installed inside each hole of the positioning cylinder 6. When cooling is required during film production, the film is first passed under the lower traction roller 2 inside the cooling device housing 1, and then through the other traction roller 2. The film passes over the higher traction roller 2, causing it to form an S-shape. Then, the external winding device pulls the film, and the movement of the film drives the two traction rollers 2 to roll. At the same time as the film is being pulled, the water pump 4 is connected to an external power source and starts. The water pump 4 draws water from the inside of the water tank 3 and sprays it through the first water pipe 5 to the filter screen 21, and then into the inside of the positioning cylinder 6. Finally, the water is sprayed from the atomizing nozzle 7 onto the inner wall of the traction roller 2. The atomizing nozzle 7 sprays the water into a mist. The water mist increases the contact area with the air through the fine water droplets, which evaporates quickly and absorbs a large amount of heat. It can cover a large area while consuming little water, avoiding local overheating. The traction roller 2 is made of aluminum and has good thermal conductivity. Combined with the water mist, it can quickly and instantly cool the film. When the water inside the traction roller 2 reaches a certain height, the one-way valve 9 is connected to the external pipe to drain the excess water, preventing poor cooling effect due to excessive residual water inside the traction roller 2.

[0024] In this embodiment, a first exhaust pipe 12 is mounted on the surface of the limiting shell 8 via a flange, a first exhaust fan 10 is mounted on the top surface of the cooling device shell 1, the input end of the first exhaust fan 10 is fixedly connected to a gas collecting pipe 11 via a flange, the end of the first exhaust pipe 12 away from the limiting shell 8 is fixedly connected to the gas collecting pipe 11, and the output end of the first exhaust fan 10 is mounted on a second exhaust pipe 13 via a flange. A semi-circular hole is opened on the adjacent side of the two cover plates 14, and the end of the second exhaust pipe 13 away from the first exhaust fan 10 is inserted into the semi-circular hole. A layer of sponge 15 is attached to the bottom surface of each cover plate 14. Simultaneously with the start of the water pump 4, the first exhaust fan 10 is connected to an external power source and then started. A blower 10 draws air from the inside of the first exhaust pipe 12 through the air collection pipe 11. Because the first exhaust pipe 12 is interconnected with the inside of the traction roller 2, the water vapor generated when the water mist inside the traction roller 2 is vaporized will be discharged into the inside of the second exhaust pipe 13 through the first blower 10, and then into the inside of the water tank 3 through the second exhaust pipe 13. After the water vapor enters the inside of the water tank 3, part of it will mix with the water again and be cooled, and part of it will rise and be absorbed by the sponge 15, thus condensing and returning to the water. Since the water inside the water tank 3 will be continuously consumed, new cooling water will be continuously added to the inside during use. Therefore, the water vapor will not heat the water inside the water tank 3.

[0025] In this embodiment, two scrapers 22 are fixedly connected to the inner wall of the cooling device housing 1. The scrapers 22 are in contact with the traction roller 2. In order to prevent and reduce dust from being generated on the film surface, the second exhaust pipe 13 will scrape the surface of the traction roller 2 to remove the debris on the surface of the traction roller 2, so that the traction roller 2 is clean when it comes into contact with the film.

[0026] In this embodiment, a dust collection head 23 is fixedly connected to the surface of the scraper 22 by bolts. A cover plate 14 is inserted into the surface of the dust collection head 23. A dust collection pipe 16 is fixedly connected to the outer surface of the cooling device housing 1. Both ends of the dust collection pipe 16 are respectively connected to two second suction pipes 24. A dust collection box 19 is provided on one side of the cooling device housing 1. A second exhaust fan 18 is installed on the surface of the dust collection box 19. A first suction pipe 17 is installed at the output end of the second exhaust fan 18 through a flange. The end of the first suction pipe 17 away from the second exhaust fan 18 is connected to the dust collection pipe 16. A mesh plate 20 is rotatably connected to the top surface of the dust collection box 19 through a hinge. A filter screen 21 is bolted to the bottom surface of the mesh plate 20. When the traction roller 2 rotates, the second exhaust fan 18 is connected to an external power source and starts. The dust scraped off by the second exhaust pipe 13 is sucked in by the sponge 15 and enters the dust collection pipe 16 through the cover plate 14. Then it enters the dust collection box 19 through the first suction pipe 17. The gas entering the dust collection box 19 is discharged through the mesh plate 20, while the dust is blocked by the filter screen 21 and remains inside the dust collection box 19, thus achieving the cleaning and collection of dust. When the sponge 15 sucks in air, it can also absorb the heat on the surface of the traction roller 2, thus achieving the further cooling of the traction roller 2.

[0027] The use of this utility model involves the following steps:

[0028] S1: When cooling is required during film production, the film first passes under the lower traction roller 2 inside the cooling device housing 1, and then passes over the other higher traction roller 2, making the film S-shaped. Then, the external winding device pulls the film, and the movement of the film drives the two traction rollers 2 to roll. At the same time as pulling the film, the water pump 4 is connected to an external power source and starts. The water pump 4 draws water from inside the water tank 3, sprays it through the first water pipe 5 to the filter screen 21, and then enters the positioning cylinder 6. Finally, it is sprayed from the atomizing nozzle 7 onto the traction roller 2. On the inner wall, the atomizing nozzle 7 sprays water into a mist. The water mist increases the contact area with the air through tiny water droplets, quickly evaporates and absorbs a large amount of heat, and can cover a large area while consuming little water, avoiding local overheating. In addition, the traction roller 2 is made of aluminum and has good thermal conductivity. Combined with the water mist, it can quickly cool the film instantly. When the water inside the traction roller 2 reaches a certain height, the one-way valve 9 connects to the external pipe and removes the excess water through the one-way valve 9 to prevent poor cooling effect due to too much residual water inside the traction roller 2.

[0029] S2: At the same time as the water pump 4 starts, the first exhaust fan 10 is connected to an external power source and then started. The first exhaust fan 10 will draw air from the inside of the first exhaust pipe 12 through the air collection pipe 11. Because the first exhaust pipe 12 is interconnected with the inside of the traction roller 2, when the water mist inside the traction roller 2 is vaporized, the water vapor generated will be discharged into the inside of the second exhaust pipe 13 through the first exhaust fan 10, and then into the inside of the water tank 3 through the second exhaust pipe 13. After the water vapor enters the inside of the water tank 3, part of it will mix with the water again and be cooled, and part of it will rise and be absorbed by the sponge 15, thus condensation will occur, and it will return to the water. Because the water inside the water tank 3 will be continuously consumed, new cooling water will be continuously added to the inside during use. Therefore, the water vapor will not heat the water inside the water tank 3.

[0030] S3: In order to prevent and reduce dust from forming on the film surface, the second exhaust pipe 13 will scrape the surface of the traction roller 2 to remove debris from the surface of the traction roller 2, so that the traction roller 2 is clean when it comes into contact with the film.

[0031] S4: When the traction roller 2 rotates, the second exhaust fan 18 is connected to an external power source and starts. The dust scraped off by the second exhaust pipe 13 is sucked in by the sponge 15 and enters the dust collection pipe 16 through the cover plate 14. Then it enters the dust collection box 19 through the first suction pipe 17. The gas entering the dust collection box 19 is discharged through the mesh plate 20, while the dust is blocked by the filter screen 21 and remains inside the dust collection box 19, thus achieving the cleaning and collection of dust. When the sponge 15 sucks in air, it can also absorb the heat on the surface of the traction roller 2, thus achieving the further cooling of the traction roller 2.

[0032] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0033] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cooling device for film production, comprising a cooling device housing (1) and two traction rollers (2) alternately arranged inside the cooling device housing (1), characterized in that: A water tank (3) is provided on one side of the housing (1) of the cooling device. Two cover plates (14) are symmetrically connected to the top surface of the water tank (3) by hinges. A water pump (4) is installed on the surface of the water tank (3). A first water pipe (5) is installed at the output end of the water pump (4). A positioning cylinder (6) is provided inside the traction roller (2). The positioning cylinder (6) and the traction roller (2) are rotatably connected. Several holes are evenly opened on the surface of the positioning cylinder (6). A filter screen (21) is installed at one end of the positioning cylinder (6). The end of the filter screen (21) away from the positioning cylinder (6) is connected to the first water pipe (5). A limit shell (8) is rotatably connected to the end of the traction roller (2) away from the filter screen (21). A one-way valve (9) is installed on the surface of the limit shell (8).

2. The cooling device for thin film production according to claim 1, characterized in that: Each of the positioning cylinders (6) has an atomizing nozzle (7) installed inside its hole.

3. The cooling device for thin film production according to claim 1, characterized in that: The surface of the limiting shell (8) is fitted with a first exhaust pipe (12) via a flange. The top surface of the cooling device housing (1) is fitted with a first exhaust fan (10). The input end of the first exhaust fan (10) is fixedly connected to a gas collecting pipe (11) via a flange. The end of the first exhaust pipe (12) away from the limiting shell (8) is fixedly connected to the gas collecting pipe (11). The output end of the first exhaust fan (10) is fitted with a second exhaust pipe (13) via a flange. A semi-circular hole is opened on the adjacent side of the two cover plates (14), and the end of the second exhaust pipe (13) away from the first exhaust fan (10) is inserted into the semi-circular hole.

4. The cooling device for thin film production according to claim 3, characterized in that: The bottom surface of each of the cover plates (14) is covered with a layer of sponge (15).

5. The cooling device for thin film production according to claim 1, characterized in that: Two scrapers (22) are fixedly connected to the inner wall of the cooling device housing (1), and the scrapers (22) are in contact with the traction roller (2).

6. The cooling apparatus for thin film production according to claim 5, characterized in that: The scraper (22) is fixedly connected to a dust collection head (23) by bolts. A cover plate (14) is inserted into the surface of the dust collection head (23). A dust collection pipe (16) is fixedly connected to the outer surface of the cooling device housing (1). The two ends of the dust collection pipe (16) are respectively connected to two second suction pipes (24). A dust collection box (19) is provided on one side of the cooling device housing (1). A second exhaust fan (18) is installed on the surface of the dust collection box (19). A first suction pipe (17) is installed at the output end of the second exhaust fan (18) through a flange. The end of the first suction pipe (17) away from the second exhaust fan (18) is connected to the dust collection pipe (16).

7. The cooling apparatus for thin film production according to claim 6, characterized in that: The top surface of the dust collection box (19) is rotatably connected to a mesh plate (20) via a hinge, and the bottom surface of the mesh plate (20) is fitted with a filter screen (21) via bolts.

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