A device for uniform cooling and shaping of cast film

Abstract

This utility model discloses a device for uniform cooling and shaping of cast film, relating to the field of cast film cooling and shaping technology. It aims to solve the limitations of existing cooling and shaping devices in terms of rapid and uniform distribution of cooling energy and dehumidification of the cooling cylinder surface. Key technical features include bearing seats, with two bearing seats and an inner rotating cylinder between them. A first linkage shaft and a second linkage shaft are bolted to both ends of the inner rotating cylinder, respectively, and are installed in corresponding bearing seat mounting holes. Multiple helical blades are fixedly connected to the outer surface of the inner rotating cylinder, and a cooling cylinder is sleeved and fixed to the outside of the helical blades. This achieves rapid and uniform distribution of cooling energy, dehumidification of the cooling cylinder surface, avoidance of condensation during cast film cooling, and high cooling and shaping stability.

Description

Technical Field

[0001] This utility model relates to the field of casting film cooling and shaping technology, and in particular to a casting film uniform cooling and shaping device. Background Technology

[0002] In the production of cast film, cooling and setting are the core steps that determine product quality. After the melt is extruded through the die, it needs to be cooled quickly and evenly to fix the molecular structure. Uneven cooling will lead to film warping, thickness deviation, and decreased mechanical properties, directly affecting subsequent processing and use.

[0003] Existing cooling and shaping devices have limitations in rapidly and uniformly distributing cooling energy and in dehumidifying and drying the surface of the cooling cylinder. Utility Model Content

[0004] The purpose of this invention is to provide a casting film uniform cooling and shaping device that can quickly and uniformly distribute cooling energy and perform drying and dehumidification operations on the surface of the cooling cylinder, avoiding the influence of condensate water during casting film cooling, and achieving high cooling and shaping stability.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A device for uniform cooling and shaping of cast film includes bearing seats, two bearing seats, and an inner rotating cylinder between the two bearing seats. A first linkage shaft and a second linkage shaft are respectively bolted to the two end faces of the inner rotating cylinder. The first linkage shaft and the second linkage shaft are respectively installed in the mounting holes of the corresponding bearing seats. Multiple helical blades are fixedly connected to the outer surface of the inner rotating cylinder. A cooling cylinder is fixedly sleeved to the outside of the helical blades. A rubber scraper is fixedly installed between the two bearing seats, and one edge of the rubber scraper is attached to the outer surface of the cooling cylinder. A wiping cotton block is fixedly installed between the two bearing seats, and the wiping end of the wiping cotton block is attached to the outer surface of the cooling cylinder. An air nozzle is installed between the two bearing seats. The air outlet direction of the air nozzle is tangent to the arc bottom position of the cooling cylinder. An air guide pipe is installed at the air inlet end of the air nozzle.

[0007] By adopting the above technical solution, the cooling capacity can be evenly distributed, and rapid cooling and shaping can be effectively achieved. At the same time, the condensation on the surface of the low-temperature cooling cylinder can be avoided from affecting the cooling and shaping of the cast film.

[0008] Furthermore, a connecting cavity is provided at both ends of the cooling cylinder. A return pipe is installed on the inner end face of one of the connecting cavities by bolts. The return pipe passes through the through hole at the central axis position of the second linkage shaft. A return channel is provided at the central axis position of the cooling cylinder. One end of the return channel communicates with the inside of the return pipe, and the other end of the return channel communicates with the inside of one of the connecting cavities.

[0009] By adopting the above technical solution, the orderly flow of cooling water is ensured.

[0010] Furthermore, multiple through holes are provided on the inner walls of both of the communicating cavities, and a liquid guiding groove is provided between two adjacent spiral blades. The two ends of the liquid guiding groove are respectively connected to the two communicating cavities through through holes.

[0011] By adopting the above technical solution, it is ensured that the cooling capacity of the cooling water can be evenly distributed on the surface of the cooling cylinder.

[0012] Furthermore, a first connecting box is installed at one end of the second linkage shaft, and the second linkage shaft communicates with the interior of the first connecting box. A second connecting box is installed at one end of the return pipe, and the return pipe communicates with the interior of the second connecting box. A sealed bearing is installed between the second linkage shaft and the first connecting box. The return pipe passes through the interior of the first connecting box, and sealed bearings are installed at the connection points between the return pipe and the first connecting box and between the return pipe and the second connecting box.

[0013] By adopting the above technical solution, it is ensured that the device can rotate stably, and the cooling water can flow stably and orderly.

[0014] Furthermore, a refrigeration unit is installed outside the return liquid channel. A liquid guiding hose is installed at the liquid outlet and liquid inlet of the refrigeration unit, and the two liquid guiding hoses are respectively connected to the interior of the first connecting box and the second connecting box.

[0015] By adopting the above technical solution, a refrigeration unit can be used to provide a stable cooling capacity for the device.

[0016] Furthermore, a gear ring is externally sleeved on one end of the first linkage shaft, a reducer is provided on one side of the gear ring, a motor is installed at the input end of the reducer, and a gear is installed at the output end of the reducer, the gear meshing with the gear ring.

[0017] By adopting the above technical solution, the motor can drive the reducer to rotate, and under the transmission of gears and gear rings, the inner drum can be effectively driven to rotate.

[0018] In summary, the beneficial technical effects of this utility model are as follows:

[0019] 1. This invention allows the inner rotating cylinder and cooling cylinder to rotate during the cooling of the cast film. At this time, cooling water from inside the refrigeration unit is transported to the inside of the first connecting box through one of the liquid guiding hoses. The cooling water then passes through the inside of the second linkage shaft and enters one of the connecting chambers. After passing through the through holes in the inner wall of the connecting chamber, it evenly enters each liquid guiding groove. Following the transport of the liquid guiding grooves, it collects in another connecting chamber, and then flows into the second connecting box through the return channel and return pipe. Finally, it flows into the refrigeration unit through another liquid guiding hose. When the cooling water passes through the liquid guiding grooves, it can quickly and evenly reduce the temperature on the outer surface of the cooling cylinder, thereby quickly and effectively cooling the cast film. During the cooling and shaping process, air nozzles are installed at the bottom of the cooling cylinder. When cooling and shaping the cast film, compressed gas passes through the air guide pipe and is ejected from the air outlet of the air nozzle. This effectively prevents the cooled cast film from adhering to the outer surface of the cooling cylinder, enabling efficient demolding. At the same time, the rubber scraper and wiping cotton block can be used to scrape the liquid from the low-temperature surface of the cooling cylinder after demolding, preventing a large amount of condensation on the surface of the low-temperature cooling cylinder. After scraping, the surface of the cooling cylinder is wiped to ensure its dryness, thereby preventing the cast film from becoming wet during cooling. The speed and stability of cooling and shaping are effectively improved.

[0020] 2. By placing the first and second connecting boxes on one side of the inner rotating cylinder, this utility model allows for convenient installation and maintenance operations, effectively improving both the convenience and flexibility of maintenance. At the same time, the entire device can be flexibly assembled, and damaged parts can be easily disassembled and replaced. Attached Figure Description

[0021] Figure 1 This is a first-view perspective view of the three-dimensional structure of this utility model;

[0022] Figure 2 This is a second perspective view of the three-dimensional structure of this utility model;

[0023] Figure 3 This is a diagram of the internal structure of this utility model.

[0024] In the diagram: 1. Bearing housing; 2. First linkage shaft; 3. Gear ring; 4. Reducer; 5. Wiping cotton block; 6. Rubber scraper; 7. Air guide pipe; 8. First connecting box; 9. Second connecting box; 10. Refrigeration unit; 11. Liquid guide hose; 12. Liquid return pipe; 13. Second linkage shaft; 14. Cooling cylinder; 15. Air nozzle; 16. Gear; 17. Inner rotating cylinder; 18. Spiral blade; 19. Connecting cavity; 20. Liquid return channel. Detailed Implementation

[0025] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Reference Figure 1 , Figure 2 , Figure 3A device for uniform cooling and shaping of cast film includes two bearing seats 1, with an inner rotating cylinder 17 positioned between them. A first linkage shaft 2 and a second linkage shaft 13 are bolted to the two end faces of the inner rotating cylinder 17, respectively, and are installed in corresponding mounting holes in the bearing seats 1. Multiple spiral blades 18 are fixedly connected to the outer surface of the inner rotating cylinder 17, and a cooling cylinder 14 is sleeved and fixed to the outside of the spiral blades 18. A rubber scraper 6 is fixedly installed between the two bearing seats 1, with one edge of the scraper 6 adhering to the outer surface of the cooling cylinder 14. A wiping cotton block 5 is fixedly installed between the two bearing seats 1, with the wiping end of the wiping cotton block 5 adhering to the outer surface of the cooling cylinder 14. A nozzle 15 is installed between the bearings 1. The outlet direction of the nozzle 15 is tangent to the arc bottom of the cooling cylinder 14. A guide pipe 7 is installed at the inlet end of the nozzle 15. A connecting cavity 19 is provided at both ends of the cooling cylinder 14. A return pipe 12 is bolted to the inner end face of one of the connecting cavities 19. The return pipe 12 passes through the through hole at the central axis position of the second linkage shaft 13. A return channel 20 is provided at the central axis position of the cooling cylinder 14. One end of the return channel 20 communicates with the inside of the return pipe 12, and the other end of the return channel 20 communicates with the inside of one of the connecting cavities 19. Multiple through holes are provided on the inner walls of both connecting cavities 19. A guide groove is provided between two adjacent spiral blades 18. The two ends of the guide groove are respectively connected to the two connecting cavities 19 through through holes. The passage 19 is connected to the first connecting box 8. One end of the second linkage shaft 13 is connected to the first connecting box 8. The second linkage shaft 13 is connected to the interior of the first connecting box 8. One end of the return pipe 12 is connected to the second connecting box 9. The return pipe 12 is connected to the interior of the second connecting box 9. A sealed bearing is installed between the second linkage shaft 13 and the first connecting box 8. The return pipe 12 passes through the interior of the first connecting box 8. Sealed bearings are installed at the connection points between the return pipe 12 and the first connecting box 8, and between the return pipe 12 and the second connecting box 9. A refrigeration unit 10 is installed outside the return channel 20. A liquid guide hose 11 is installed at the liquid outlet and liquid inlet of the refrigeration unit 10, respectively. The two liquid guide hoses 11 are connected to the interiors of the first connecting box 8 and the second connecting box 9, respectively. The gap between the pressure roller and the cooling cylinder 14 is adjusted during operation. The pressure roller is used to extrude and shape the cast film on the surface of the cooling cylinder 14. During the cooling of the cast film, the inner rotating cylinder 17 and the cooling cylinder 14 rotate. At this time, cooling water inside the refrigeration unit 10 is transported to the inside of the first connecting box 8 through one of the liquid guiding hoses 11. Then, the cooling water passes through the inside of the second linkage shaft 13 and enters the inside of one of the connecting cavities 19. After passing through the through holes on the inner wall of the connecting cavity 19, it enters the inside of each liquid guiding groove evenly. After being transported along the liquid guiding groove, it collects into the inside of another connecting cavity 19. Then, it flows into the inside of the second connecting box 9 along the return liquid channel 20 and the return liquid pipe 12. Finally, it flows into the inside of the refrigeration unit 10 through another liquid guiding hose 11.When cooling water passes through the liquid guiding groove, it can quickly and evenly reduce the temperature on the outer surface of the cooling cylinder 14, thereby enabling rapid and effective cooling and shaping of the cast film. Because an air nozzle 15 is provided at the bottom of the cooling cylinder 14, compressed gas passes through the air guiding pipe 7 and is ejected from the air outlet of the air nozzle 15 during the cooling and shaping of the cast film. This effectively prevents the cooled cast film from adhering to the outer surface of the cooling cylinder 14, achieving efficient demolding. Simultaneously, the rubber scraper 6 and wiping cotton block 5 allow for scraping the low-temperature surface of the cooling cylinder 14 after demolding, preventing excessive condensation on the surface. After scraping, the surface of the cooling cylinder 14 is wiped to ensure dryness, thus preventing the cast film from becoming damp during cooling. The speed and stability of cooling and shaping are effectively improved.

[0027] Reference Figure 1 , Figure 2 A gear ring 3 is externally sleeved at one end of the first linkage shaft 2. A reducer 4 is provided on one side of the gear ring 3. A motor is installed at the input end of the reducer 4, and a gear 16 is installed at the output end of the reducer 4. The gear 16 meshes with the gear ring 3. The motor can be started when the cast film is cooled, and the motor drives the reducer 4 to rotate. Then, under the linkage of the gear 16 and the gear ring 3, the reducer 4 can effectively drive the inner rotating cylinder 17 and the cooling cylinder 14 to rotate, thereby ensuring that the cooling and shaping of the cast film can be carried out stably.

[0028] Working principle: In use, first install the device in the designated position, adjust the gap between the pressure roller and the cooling cylinder 14, and use the pressure roller to squeeze and shape the cast film on the surface of the cooling cylinder 14. When cooling the cast film, start the motor, and the motor drives the reducer 4 to rotate. Then, under the linkage of the gear 16 and the gear ring 3, the reducer 4 can effectively drive the inner rotating cylinder 17 and the cooling cylinder 14 to rotate. At this time, the cooling water inside the refrigeration unit 10 is transported to the inside of the first connecting box 8 through one of the liquid guiding hoses 11. Then, the cooling water passes through the inside of the second linkage shaft 13 and enters the inside of one of the connecting cavities 19. Then, it passes through the through holes on the inner wall of the connecting cavity 19 and enters the inside of each liquid guiding groove evenly. After being transported along the liquid guiding groove, it gathers into the inside of another connecting cavity 19, and then flows into the inside of the second connecting box 9 along the return liquid channel 20 and the return liquid pipe 12. Then, it flows into the refrigeration unit through another liquid guiding hose 11. Inside the cooling cylinder 10, when cooling water passes through the liquid guiding groove, it can quickly and evenly reduce the temperature on the outer surface of the cooling cylinder 14, thereby enabling rapid and effective cooling and shaping of the cast film. Since an air nozzle 15 is provided at the bottom of the cooling cylinder 14, when the cast film is being cooled and shaped, compressed gas passes through the air guiding pipe 7 and is ejected from the air outlet of the air nozzle 15. This effectively prevents the cooled cast film from adhering to the outer surface of the cooling cylinder 14, enabling efficient demolding. At the same time, the rubber scraper 6 and wiping cotton block 5 can be used to scrape the liquid from the low-temperature surface of the cooling cylinder 14 after demolding, preventing a large amount of condensation on the surface of the low-temperature cooling cylinder 14. After scraping, the surface of the cooling cylinder 14 is wiped to ensure the dryness of the surface of the cooling cylinder 14, thereby preventing the cast film molten material from being wet during cooling. The speed and stability of cooling and shaping are effectively improved.

[0029] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A uniform cooling and setting device for cast film comprising a bearing block (1) characterised in that: Two bearing seats (1) are provided, and an inner rotating cylinder (17) is provided between the two bearing seats (1). A first linkage shaft (2) and a second linkage shaft (13) are respectively installed on the two end faces of the inner rotating cylinder (17) by bolts. The first linkage shaft (2) and the second linkage shaft (13) are respectively installed in the mounting holes of the corresponding bearing seats (1). Multiple spiral blades (18) are fixedly connected to the outer surface of the inner rotating cylinder (17). A cooling cylinder (14) is sleeved and fixed to the outside of the spiral blades (18). A rubber scraper (6) is fixedly installed between the bearing seats (1). One side edge of the rubber scraper (6) is attached to the outer surface of the cooling cylinder (14). A wiping cotton block (5) is fixedly installed between the two bearing seats (1). The wiping end of the wiping cotton block (5) is attached to the outer surface of the cooling cylinder (14). An air nozzle (15) is installed between the two bearing seats (1). The air outlet direction of the air nozzle (15) is tangent to the arc bottom position of the cooling cylinder (14). An air guide pipe (7) is installed at the air inlet end of the air nozzle (15).

2. A uniform cooling and setting device for cast film as claimed in claim 1, wherein: The cooling cylinder (14) has a connecting cavity (19) at both ends. A return pipe (12) is installed on the inner end face of one of the connecting cavities (19) by bolts. The return pipe (12) passes through the through hole at the central axis position of the second linkage shaft (13). A return channel (20) is provided at the central axis position of the cooling cylinder (14). One end of the return channel (20) communicates with the inside of the return pipe (12), and the other end of the return channel (20) communicates with the inside of one of the connecting cavities (19).

3. A uniform cooling and setting device for cast film as claimed in claim 2, wherein: Multiple through holes are provided on the inner walls of the two connecting cavities (19), and a liquid guiding groove is provided between two adjacent spiral blades (18). The two ends of the liquid guiding groove are respectively connected to the two connecting cavities (19) through through holes.

4. A uniform cooling and setting device for cast film as claimed in claim 2, wherein: One end of the second linkage shaft (13) is equipped with a first connecting box (8), and the second linkage shaft (13) communicates with the interior of the first connecting box (8). One end of the return pipe (12) is equipped with a second connecting box (9), and the return pipe (12) communicates with the interior of the second connecting box (9). A sealed bearing is installed between the second linkage shaft (13) and the first connecting box (8). The return pipe (12) passes through the interior of the first connecting box (8), and sealed bearings are installed at the connection between the return pipe (12) and the first connecting box (8) and at the connection between the return pipe (12) and the second connecting box (9).

5. The casting film uniform cooling and shaping device according to claim 4, characterized in that: A refrigeration unit (10) is provided outside the return channel (20). A liquid guide hose (11) is installed at the liquid outlet and liquid inlet of the refrigeration unit (10). The two liquid guide hoses (11) are respectively connected to the interior of the first connecting box (8) and the second connecting box (9).

6. A uniform cooling and setting device for cast film as claimed in claim 1, wherein: A gear ring (3) is externally sleeved on one end of the first linkage shaft (2). A speed reducer (4) is provided on one side of the gear ring (3). A motor is installed at the input end of the speed reducer (4). A gear (16) is installed at the output end of the speed reducer (4). The gear (16) meshes with the gear ring (3).

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