A plastic film processing cooling device

Abstract

The utility model discloses a kind of plastic film processing cooling device, including cooling box, cooling speed adjusting mechanism, water cooling mechanism and circulating heat dissipation mechanism, cooling fan is fixedly arranged in the middle of cooling box top, electric telescopic rod is fixedly arranged in cooling box inside upper portion and is symmetrically arranged, electric telescopic rod telescopic end is fixedly arranged with lifting frame, lower pressure rotating roller is rotatably arranged in the lower portion of lifting frame, feeding rotating roller is rotatably arranged in the both sides of cooling box, water cooling mechanism is arranged in the lower portion of cooling box, circulating heat dissipation mechanism is arranged in the lower portion of cooling box;The utility model drives lower pressure rotating roller accurate control plastic film in cooling box's stroke by electric telescopic rod, prolongs or shortens air cooling path, realizes stepless switching of fast cooling and slow cooling, satisfies the differentiating demand of different materials to crystallinity, transparency, water in water tank is pumped into heat dissipation bin active heat dissipation by second water pump and heat dissipation fin, accelerates water tank water temperature balance, cooperate first water pump to realize the recycling of water resources, reduce energy consumption and water consumption.

Description

Technical Field

[0001] This utility model relates to the field of cooling device technology, and in particular to a cooling device for plastic film processing. Background Technology

[0002] Cooling is a crucial step in plastic film processing, primarily achieved through rapid cooling and shaping of molten plastic using either air or water cooling. In blown film production, plastic particles are heated and melted in an extruder to form a tubular preform, which is then blown into a bubble through a die. A cool airflow layer is then blown onto the outer surface of the bubble using an air ring, carrying away heat and achieving cooling and shaping. To avoid interference between the bubble and the inner wall of the cooling device, some devices employ adjustable airflow structures. Internal rotating blades accelerate the expulsion of hot air and guide cold air downwards for neutralization, thereby improving cooling efficiency. Furthermore, the cooling rate directly affects film performance: rapid cooling reduces crystallization, improving the transparency and toughness of materials like PP and PE, while slow cooling promotes increased crystallinity, enhancing mechanical strength. A cooling device for processing plastic film is disclosed in utility model application number 202422414724.2. By controlling the operation of a water pump, the water pump will input water into the water pan through the first connecting pipe. The water will then be sprayed upward through the atomizing nozzle, so that the water mist that comes into contact with the plastic film in the cooling box will achieve the effect of cooling the plastic film. By controlling the operation of a fan, the fan will input air into the air box through the second connecting pipe. The air will then be blown out obliquely upward through the air outlet, cooling the plastic film conveyed above and blowing away the water stains attached to the plastic film at the same time. Thus, the device achieves the effect of cooling the plastic film again and cleaning the water stains on the plastic film at the same time. However, in the aforementioned cooling device for plastic film processing, the time the plastic film spends in the cooling box is relatively short, making it impossible to adjust and switch the cooling speed according to processing requirements. Therefore, the film performance cannot be directly affected by adjusting the cooling speed. In the aforementioned cooling device for plastic film processing, water is continuously sprayed for cooling through a water pump and atomizing nozzles, resulting in a large consumption of water resources during the cooling process. It is also impossible to form an effective circulating water path to reduce cooling water consumption. Therefore, this utility model proposes a cooling device for plastic film processing to solve the problems existing in the prior art. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this invention is to propose a cooling device for plastic film processing. This device uses an electric telescopic rod to drive a downward pressure roller to precisely control the travel of the plastic film within the cooling chamber, extending or shortening the air-cooling path to achieve stepless switching between rapid and slow cooling. This satisfies the varying requirements of different materials for crystallinity and transparency, and solves the problem that the cooling speed cannot be adjusted according to processing needs during cooling processing, and that adjusting the cooling speed directly affects the film performance. A second water pump and heat dissipation fins pump water from the water tank into a heat dissipation chamber for active heat dissipation, accelerating the water temperature balance in the tank. Combined with the first water pump, this achieves water resource recycling, reducing energy and water consumption.

[0004] To achieve the purpose of this utility model, the present utility model is implemented through the following technical solution: a cooling device for plastic film processing, including a cooling box, a cooling speed adjustment mechanism, a water cooling mechanism, and a circulating heat dissipation mechanism. The cooling speed adjustment mechanism includes a cooling fan, an electric telescopic rod, a lifting frame, a pressure roller, a feeding roller, and a motor. A cooling fan is fixedly installed in the middle of the top of the cooling box. An electric telescopic rod is symmetrically fixedly installed in the upper part of the cooling box. A lifting frame is fixedly installed at the telescopic end of the electric telescopic rod. A pressure roller is rotatably installed below the lifting frame. Feeding rollers are symmetrically rotatably installed on both sides of the cooling box. A water cooling mechanism is installed in the lower part of the cooling box. A circulating heat dissipation mechanism is installed below the cooling box.

[0005] A further improvement is that: guide rollers are symmetrically rotated at the top of the cooling box, and two sets of feeding rollers are symmetrically arranged above and below.

[0006] Further improvements are made in the following aspects: the water cooling mechanism includes a water tank, a first water pump, a water pan, a water supply pipe, an atomizing nozzle, and a scraper. The water tank is located below the cooling box, the first water pump is fixedly installed on the top of the water tank, the water pan is symmetrically and obliquely fixedly installed inside the cooling box, the water pan and the first water pump are connected by a water supply pipe, the atomizing nozzle is arranged and fixedly installed on the inner side of the water pan, the scraper is fixedly installed in the middle of the other side inside the cooling box, and a circulating heat dissipation mechanism is located below the cooling box.

[0007] A further improvement is that the water tray is hollow inside and is connected to the atomizing nozzle.

[0008] A further improvement is that the circulating heat dissipation mechanism includes a second water pump, a heat dissipation chamber, a return water pipe, and heat dissipation fins. The second water pump is fixedly installed on the upper side of one side of the water tank, and a heat dissipation chamber is installed on the lower side of the cooling tank. The heat dissipation chamber is connected to the water tank by a return water pipe, and heat dissipation fins are fixedly installed on the outer side of the heat dissipation chamber.

[0009] A further improvement is that the bottom of the cooling tank is connected to the top of the water tank via a pipe, and the heat dissipation chamber is connected to the second water pump via a pipe.

[0010] A further improvement is that: a bracket is fixedly provided on the upper side of the other side of the cooling box; a limit groove is symmetrically opened at the end of the bracket; a take-up shaft is rotatably provided between the limit grooves; a motor is fixedly provided on the front side of the bracket; a drive sleeve is driven by the output end of the motor; the drive sleeve is sleeved with the front end of the take-up shaft for drive; and a water-absorbing sponge roller is rotatably provided on one side of the bracket.

[0011] The beneficial effects of this utility model are as follows: This utility model uses an electric telescopic rod to drive a downward pressure roller to precisely control the travel of the plastic film in the cooling box, extending or shortening the air cooling path, realizing stepless switching between fast and slow cooling, meeting the different requirements of different materials for crystallinity and transparency, solving the problem that the cooling speed cannot be adjusted according to the processing requirements during cooling processing, and that adjusting the cooling speed directly affects the film performance. The second water pump and heat dissipation fins pump water from the water tank into the heat dissipation chamber for active heat dissipation, accelerating the water temperature balance in the water tank, and working with the first water pump to realize the recycling of water resources, reducing energy and water consumption. Attached Figure Description

[0012] Figure 1 This is the overall front sectional view of the present invention; Figure 2 This is a top view of the water tray of this utility model; Figure 3 This is the overall front view of the present invention; Figure 4 This is a top view of the drive sleeve of this utility model.

[0013] The components include: 1. Cooling box; 2. Cooling fan; 3. Electric telescopic rod; 4. Lifting frame; 5. Downward pressure roller; 6. Feeding roller; 7. Guide roller; 8. Water tank; 9. First water pump; 10. Water supply pipe; 11. Water tray; 12. Atomizing nozzle; 13. Scraper; 14. Second water pump; 15. Heat dissipation chamber; 16. Return water pipe; 17. Heat dissipation fins; 18. Support; 19. Limiting groove; 20. Rewinding shaft; 21. Motor; 22. Drive sleeve; 23. Water-absorbing sponge roller. Detailed Implementation

[0014] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0015] according to Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, this embodiment provides a cooling device for plastic film processing, including a cooling box 1, a cooling speed adjustment mechanism, a water cooling mechanism, and a circulating heat dissipation mechanism. The cooling speed adjustment mechanism includes a cooling fan 2, an electric telescopic rod 3, a lifting frame 4, a downward pressure roller 6, a feeding roller, and a motor 21. The cooling fan 2 is fixedly installed at the top center of the cooling box 1. The electric telescopic rod 3 is symmetrically fixedly installed at the front and back of the upper part of the cooling box 1. The lifting frame 4 is fixedly installed at the telescopic end of the electric telescopic rod 3. The downward pressure roller 6 is rotatably installed below the lifting frame 4. The feeding rollers are symmetrically rotatably installed on both sides of the cooling box 1. When it is necessary to adjust the cooling speed of the plastic film, the electric telescopic rod 3 extends to push the lifting frame 4 and the downward pressure roller 6 to descend, so that the length of the plastic film entering the cooling box 1 is adjusted under the guidance of the downward pressure roller 6, so that the plastic film can be cooled quickly in a shorter time. The cooling speed can be adjusted and switched according to the processing requirements of the plastic film. A water cooling mechanism is installed at the bottom of the cooling box 1, and a circulating heat dissipation mechanism is installed at the bottom of the cooling box 1.

[0016] Inside the cooling box 1, guide rollers 7 are symmetrically rotated at the top. Two sets of feeding rollers are symmetrically arranged above and below. The plastic film is guided by the guide rollers 7 and passes through the feeding rollers.

[0017] The water cooling mechanism includes a water tank 8, a first water pump 9, a water tray 11, a water supply pipe 10, an atomizing nozzle 12, and a scraper 13. The water tank 8 is located below the cooling box 1, and the first water pump 9 is fixedly installed on the top of the water tank 8. The water tray 11 is symmetrically and obliquely fixed inside the cooling box 1. The water supply pipe 10 connects the water tray 11 and the first water pump 9. The atomizing nozzles 12 are arranged and fixedly installed inside the water tray 11. The scraper 13 is fixedly installed in the middle of the other side inside the cooling box 1. The water tray 11 is hollow inside and connected to the atomizing nozzles 12. When cooling is performed, the cooling fan 2 starts to blow air from above, and at the same time, the first water pump 9 starts to pump water from the water tank 8 into the water tray 11 and then spray it out from the atomizing nozzles 12. This achieves cooling from both the top and bottom with air cooling and atomized water cooling, effectively improving cooling efficiency. After the water mist is cooled, it moves with the plastic film and is scraped off by the scraper 13 and flows back into the water tank 8 through the pipe for convenient water circulation. A circulating heat dissipation mechanism is provided below the cooling box 1.

[0018] The circulating heat dissipation mechanism includes a second water pump 14, a heat dissipation chamber 15, a return water pipe 16, and heat dissipation fins 17. The second water pump 14 is fixedly installed on the upper side of one side of the water tank 8, and the heat dissipation chamber 15 is installed on the lower side of the cooling box 1. The heat dissipation chamber 15 is connected to the water tank 8 by a return water pipe 16. The heat dissipation fins 17 are fixedly installed on the outer side of the heat dissipation chamber 15. The bottom of the cooling box 1 is connected to the top of the water tank 8 by a pipe, and the heat dissipation chamber 15 is connected to the second water pump 14 by a pipe. When the water in the water tank 8 needs to be cooled, the second water pump 14 is started to pump the water in the water tank 8 into the heat dissipation chamber 15, and the heat dissipation fins 17 are used to quickly dissipate heat, realizing circulating heat dissipation and facilitating circulating water treatment and cooling.

[0019] A bracket 18 is fixedly installed on the upper side of the other side of the cooling box 1. The bracket 18 has symmetrical limit grooves 19 at its end. A take-up shaft 20 is rotatably installed between the limit grooves 19. A motor 21 is fixedly installed on the front side of the bracket 18. The output end of the motor 21 drives a drive sleeve 22. The drive sleeve 22 is sleeved with the front end of the take-up shaft 20 for drive. A water-absorbing sponge roller 23 is rotatably installed on one side of the bracket 18. During cooling, the plastic film is first guided to pass through from one side and out from the other side and then wound onto the take-up shaft 20. The motor 21 drives the drive sleeve 22 to rotate, which drives the take-up shaft 20 to rotate in the limit grooves 19 to wind up the plastic film at the same time. Before winding up, the plastic film contacts the water-absorbing sponge roller 23 to fully absorb water.

[0020] This plastic film processing cooling device guides the plastic film into the cooling box via a feeding roller, then exits from the other side and winds it onto a take-up shaft. An electric telescopic rod drives a lifting frame, which in turn lowers the pressure roller, adjusting the film's travel path within the cooling box. A cooling fan at the top of the cooling box blows cold air downwards. Simultaneously, a first water pump in the water tank pressurizes water to a water tray, spraying fine mist onto the upper and lower surfaces of the film through atomizing nozzles. This combination of air cooling and atomized water cooling achieves rapid heat exchange. The cooled water mist is scraped off by a scraper and flows back to the water tank along a pipe. A second water pump then pumps water from the tank to a heat dissipation chamber, where it is cooled by heat dissipation fins and recycled. Finally, the film is dehydrated by an absorbent sponge roller and wound up by the take-up shaft. This design dynamically adjusts the cooling path length via an electric telescopic rod, combined with dual air and water cooling modes and a high-efficiency water circulation cooling system, enabling flexible switching of cooling speeds and energy-saving operation.

[0021] 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 plastic film processing, characterized in that: The cooling box (1) includes a cooling speed adjustment mechanism, a water cooling mechanism and a circulating heat dissipation mechanism. The cooling speed adjustment mechanism includes a cooling fan (2), an electric telescopic rod (3), a lifting frame (4), a pressure roller (5), a feeding roller (6) and a motor (21). The cooling fan (2) is fixedly installed in the middle of the top of the cooling box (1). The electric telescopic rod (3) is fixedly installed symmetrically in front and behind the upper part of the cooling box (1). The lifting frame (4) is fixedly installed at the telescopic end of the electric telescopic rod (3). The pressure roller (5) is rotatably installed below the lifting frame (4). The feeding roller (6) is rotatably installed on both sides of the cooling box (1). The water cooling mechanism is installed in the lower part of the cooling box (1). The circulating heat dissipation mechanism is installed below the cooling box (1).

2. The cooling device for plastic film processing according to claim 1, characterized in that: The cooling box (1) is symmetrically equipped with guide rollers (7) at the top, and the feeding rollers (6) are symmetrically arranged in two sets at the top and bottom.

3. The cooling device for plastic film processing according to claim 1, characterized in that: The water cooling mechanism includes a water tank (8), a first water pump (9), a water pan (11), a water pipe (10), an atomizing nozzle (12), and a scraper (13). The water tank (8) is located below the cooling box (1). The first water pump (9) is fixedly located on the top of the water tank (8). The water pan (11) is symmetrically and obliquely fixed inside the cooling box (1). The water pan (11) and the first water pump (9) are connected by a water pipe (10). The atomizing nozzle (12) is arranged and fixed inside the water pan (11). The scraper (13) is fixedly located in the middle of the other side inside the cooling box (1). A circulating heat dissipation mechanism is located below the cooling box (1).

4. The cooling device for plastic film processing according to claim 3, characterized in that: The water pan (11) is hollow inside and is connected to the atomizing nozzle (12).

5. A cooling device for plastic film processing according to claim 3, characterized in that: The circulating heat dissipation mechanism includes a second water pump (14), a heat dissipation chamber (15), a return water pipe (16), and heat dissipation fins (17). The second water pump (14) is fixedly installed on the upper side of one side of the water tank (8), and the heat dissipation chamber (15) is provided on the lower side of the cooling box (1). The heat dissipation chamber (15) is connected to the water tank (8) by a return water pipe (16), and heat dissipation fins (17) are fixedly installed on the outside of the heat dissipation chamber (15).

6. A cooling device for plastic film processing according to claim 5, characterized in that: The bottom of the cooling box (1) is connected to the top of the water tank (8) by a pipe, and the heat dissipation chamber (15) is connected to the second water pump (14) by a pipe.

7. A cooling device for plastic film processing according to claim 1, characterized in that: A bracket (18) is fixedly provided on the upper side of the other side of the cooling box (1). A limiting groove (19) is symmetrically opened at the end of the bracket (18). A winding shaft (20) is rotatably provided between the limiting grooves (19). A motor (21) is fixedly provided on the front side of the bracket (18). A driving sleeve (22) is driven at the output end of the motor (21). The driving sleeve (22) is sleeved and driven with the front end of the winding shaft (20). A water-absorbing sponge roller (23) is rotatably provided on one side of the bracket (18).

Images