A cooling device for polyester film production

Abstract

The utility model relates to polyester film cooling technical field discloses a cooling device for polyester film production, include: cooling box, the cooling box top part is provided with the water delivery cover less than the volume of cooling box, the water delivery cover bottom and cooling box top part all rotatory installation have the sealing bearing of multiple groups equidistance distribution. In the utility model, the cooling water in the cooling box is transported to the inside of the water delivery cover, the polyester film transported in the extruder is sequentially penetrated through multiple groups of cooling cylinders, the low-temperature cooling cylinder can efficiently cool the high-temperature polyester film, the driving motor drives the gear to rotate, the gear ring is installed in mesh with the gear, and the adjacent two groups of gear rings are meshed, which can synchronously drive multiple groups of cooling cylinders to rotate, so that the polyester film is in full contact with the cooling cylinder, the cooling area is increased, the uniformity of cooling is improved, the uneven quality of the polyester film caused by insufficient or excessive cooling in local area is avoided, and the overall quality of the product is improved.

Description

Technical Field

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

[0002] Currently, in the production process of polyester film, the cooling process is one of the key steps to ensure stable film quality and excellent performance. Traditional polyester film cooling methods mostly adopt static cooling or simple water bath cooling. Although these methods can achieve film cooling to a certain extent, they have many limitations.

[0003] Among them, static cooling relies on natural heat dissipation from the environment, which has low cooling efficiency. Especially in large-scale continuous production, it cannot meet the cooling requirements of high-speed production lines, which can easily lead to problems such as film deformation and adhesion due to insufficient cooling, seriously affecting product quality. Static cooling also makes it difficult to control the cooling rate of the film, which can easily cause uneven stress distribution inside the film, thereby affecting the flatness and mechanical properties of the film. While simple water bath cooling improves cooling efficiency, it suffers from uneven cooling. Because the movement trajectory and residence time of the membrane in the water bath are difficult to control precisely, the cooling effect varies across different parts of the membrane, easily leading to localized over- or under-cooling.

[0004] To address these issues, we propose a cooling device for polyester film production, which enables efficient and uniform cooling of the polyester film. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a cooling device for polyester film production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A cooling device for polyester film production includes: a cooling box, a water supply hood with a volume smaller than the cooling box distributed on the top of the cooling box, multiple sets of equally spaced sealed bearings rotatably mounted on the bottom of the water supply hood and the top of the cooling box, a cooling mechanism installed between two adjacent sets of sealed bearings, the cooling mechanism including multiple sets of cooling cylinders, an extruder installed on one side of the cooling box and the water supply hood, and polyester film conveyed in the extruder sequentially passing through the multiple sets of cooling cylinders.

[0007] Preferably, the cooling mechanism includes a cooling cylinder installed between two adjacent sets of sealed bearings, a gear ring fixedly installed on the outer side of the bottom of each set of cooling cylinders, and a gear meshing with the gear ring on one side. The gear rings are meshed between adjacent sets, and both ends of each set of cooling cylinders are distributed and installed in communication with the cooling box and the water supply cover to improve the uniformity of cooling.

[0008] Preferably, a mounting bracket is fixedly installed on the top of the side wall of the cooling box, and a motor is fixedly installed on the other end of the mounting bracket. The motor drive output end is connected to the transmission shaft, and the other end of the transmission shaft is fixedly installed to the gear shaft, which can synchronously drive multiple sets of cooling cylinders to rotate.

[0009] Preferably, a liquid pump is fixedly installed at one bottom end of the outer side of the cooling tank. The inlet of the liquid pump is connected to the cooling tank, and a conduit is connected to the outlet of the liquid pump. The other end of the conduit is connected to the side wall of the water supply cover, so that cooling water can be pumped into the water supply cover.

[0010] Preferably, an ice-releasing trough is provided at one end of the top of the cooling box, and a cover plate is installed on one side of the ice-releasing trough by means of a hinge. The cover plate corresponds to the ice-releasing trough, which makes it convenient for the operator to place ice blocks into the cooling box.

[0011] Preferably, a temperature sensor is fixedly installed on one side of the inner wall of the water supply cover, and a liquid level sensor is fixedly installed on the other side of the inside of the water supply cover, which can detect the liquid level and temperature of the cooling water.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a pump inside the cooling tank to deliver cooling water to the water supply hood. The water then flows along multiple cooling cylinders into the cooling tank. As the polyester film conveyed in the extruder passes through these cooling cylinders sequentially, the low-temperature cylinders efficiently cool the high-temperature polyester film. Simultaneously, a drive motor rotates gears, and adjacent sets of gear rings mesh with these gears, synchronously rotating multiple cooling cylinders. This ensures full contact between the polyester film and the cooling cylinders, increasing the cooling area and improving cooling uniformity. This avoids uneven polyester film quality caused by insufficient or excessive cooling, thereby improving the overall product quality.

[0013] An ice-discharging trough is located at one end of the top of the cooling tank, and a cover plate is mounted on one side of the ice-discharging trough via a hinge. In conjunction with a temperature sensor installed on the inner wall of the water supply hood, the temperature of the cooling medium inside the water supply hood can be monitored in real time, and the temperature data can be fed back to the control system. This allows the operator to open the cover plate in a timely manner based on the temperature data, add ice to the ice-discharging trough, and wait for the ice to melt and absorb heat, which can quickly reduce the temperature of the cooling medium and enhance the cooling effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a cooling device for polyester film production proposed in this utility model; Figure 2This is a schematic diagram of the cooling mechanism of a cooling device for polyester film production proposed in this utility model; Figure 3 This is a schematic diagram of the water supply cover structure of a cooling device for polyester film production proposed in this utility model.

[0015] In the diagram: 1. Cooling tank; 11. Water supply cover; 12. Extruder; 2. Sealed bearing; 21. Cooling cylinder; 22. Gear ring; 23. Gear; 24. Mounting bracket; 25. Motor; 3. Liquid pump; 31. Conduit; 32. Ice tank; 33. Cover plate; 34. Temperature sensor; 35. Liquid level sensor. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-3 A cooling device for polyester film production includes: a cooling tank 1; a water supply hood 11 with a volume smaller than the cooling tank 1 distributed on the top of the cooling tank 1; multiple sets of equally spaced sealed bearings 2 rotatably mounted on the bottom of the water supply hood 11 and the top of the cooling tank 1; a cooling mechanism installed between adjacent sets of sealed bearings 2; the cooling mechanism includes multiple sets of cooling cylinders 21; an extruder 12 is installed on one side of the cooling tank 1 and the water supply hood 11; polyester film conveyed in the extruder 12 passes sequentially through the multiple sets of cooling cylinders 21; the cooling mechanism includes cooling cylinders 21 installed between adjacent sets of sealed bearings 2; toothed rings 22 fixedly installed on the outer side of the bottom of each set of cooling cylinders 21; and gears 23 meshing with the toothed rings 22 on one side; adjacent sets of toothed rings 22 meshing with each other; and the two ends of each set of cooling cylinders 21 are distributed with the cooling tank 1. The water supply cover 11 is connected to improve the uniformity of cooling. The cooling water inside the cooling tank 1 is transported to the water supply cover 11 by the pump 3 inside the cooling tank 1. After that, the water flows into the cooling tank 1 along multiple sets of cooling cylinders 21. Since the polyester film conveyed in the extruder 12 passes through multiple sets of cooling cylinders 21 in sequence, the low-temperature cooling cylinders 21 can efficiently cool the high-temperature polyester film. At the same time, the drive motor 25 drives the gear 23 to rotate. The gear ring 22 meshes with the gear 23, and the adjacent sets of gear rings 22 mesh, which can synchronously drive multiple sets of cooling cylinders 21 to rotate. This allows the polyester film to fully contact the cooling cylinders 21, increases the cooling area, improves the uniformity of cooling, and avoids the problem of uneven quality of polyester film caused by insufficient or excessive cooling in some areas, thereby improving the overall quality of the product.

[0018] Furthermore, an ice-releasing trough 32 is provided at one end of the top of the cooling tank 1. A cover plate 33 is hinged to one side of the ice-releasing trough 32, and the cover plate 33 corresponds to the ice-releasing trough 32, making it convenient for the operator to place ice blocks into the cooling tank 1. With the ice-releasing trough 32 at one end of the top of the cooling tank 1 and the cover plate 33 hinged to one side of the ice-releasing trough 32, in conjunction with the temperature sensor 34 installed on the inner wall of the water supply cover 11, the temperature of the cooling medium in the water supply cover 11 can be monitored in real time, and the temperature data can be fed back to the control system. This allows the operator to open the cover plate 33 in time according to the temperature data, add ice blocks to the ice-releasing trough 32, and wait for the ice blocks to melt and absorb heat, which can quickly reduce the temperature of the cooling medium and enhance the cooling effect.

[0019] Furthermore, a mounting bracket 24 is fixedly installed on the top of the side wall of the cooling box 1, and a motor 25 is fixedly installed on the other end of the mounting bracket 24. The drive output end of the motor 25 is connected to the transmission shaft, and the other end of the transmission shaft is fixedly installed on the central shaft of the gear 23. This allows multiple sets of cooling cylinders 21 to rotate synchronously. The motor 25 on the mounting bracket 24 drives the gear 23 to rotate, thereby driving multiple sets of cooling cylinders 21 to rotate. The operator can precisely adjust the speed of the motor 25 according to production needs, thereby controlling the rotation speed of the cooling cylinders 21 and better controlling the cooling time and cooling effect of the polyester film.

[0020] Furthermore, a liquid pump 3 is fixedly installed at one bottom outer side of the cooling tank 1. The inlet of the liquid pump 3 is connected to the cooling tank 1, and the outlet of the liquid pump 3 is connected to a conduit 31. The other end of the conduit 31 is connected to the side wall of the water supply cover 11, which can pump cooling water into the water supply cover 11. By driving the liquid pump 3 inside the cooling tank 1, the cooling water inside the cooling tank 1 is transported into the water supply cover 11, which can keep the cooling medium in good cooling performance at all times, and remove the heat generated during the cooling process of the polyester film in time, ensuring the continuity and stability of the cooling effect. At the same time, it improves the utilization rate of the cooling medium, reduces production costs, and avoids the problem of cooling medium accumulating in local areas, which leads to a decrease in cooling effect.

[0021] Furthermore, a temperature sensor 34 is fixedly installed on one side of the inner wall of the water supply cover 11, and a liquid level sensor 35 is fixedly installed on the other side of the inside of the water supply cover 11, which can detect the liquid level and temperature of the cooling water.

[0022] During use, the temperature sensor 34 can monitor the temperature of the cooling medium inside the water supply cover 11 in real time and feed the temperature data back to the control system. The liquid level sensor 35 can monitor the liquid level of the cooling medium inside the water supply cover 11 in real time. When the liquid level inside the water supply cover 11 is low, the power of the pump 3 can be increased to accelerate the introduction of cooling water from the cooling tank 1 into the water supply cover 11.

[0023] When in use, after the liquid pump 3 is started, the conduit 31 connected to its outlet port draws out the cooling water in the cooling tank 1 and delivers it to the inside of the water supply cover 11. Since the volume of the water supply cover 11 is smaller than that of the cooling tank 1, and each set of cooling cylinders 21 is connected to the cooling tank 1 and the water supply cover 11 at both ends respectively, after the cooling water enters the water supply cover 11, it will flow along multiple sets of cooling cylinders 21 into the cooling tank 1, forming a circulating flow of the cooling medium, which can promptly remove the heat generated during the cooling process of the polyester film, ensuring the continuity and stability of the cooling effect. When the motor 25 starts, it drives the gear 23 to rotate through the transmission shaft. Since the gear 23 meshes with the gear ring 22 and adjacent gear rings 22 also mesh with each other, multiple cooling cylinders 21 can be rotated synchronously. The low-temperature cooling cylinders 21 come into direct contact with the high-temperature polyester film, and the polyester film is cooled through heat transfer. The synchronous rotation of multiple cooling cylinders 21 can make the polyester film fully contact the cooling cylinders 21, increase the cooling area, improve the uniformity of cooling, and effectively avoid the problem of uneven polyester film quality caused by insufficient or excessive local cooling, thereby improving the overall quality of the product. When the temperature sensor 34 detects that the temperature of the cooling medium is too high, the operator can open the cover plate 33 and add ice to the ice tank 32 according to the temperature data fed back by the control system. The ice melts and absorbs heat, which can quickly reduce the temperature of the cooling medium, enhance the cooling effect, and ensure that the cooling medium is always in a suitable temperature range to meet the cooling requirements of polyester film under different production conditions. When the liquid level inside the water supply cover 11 is low, the liquid level sensor 35 feeds back the liquid level data to the control system. The control system increases the power of the pump 3 based on the received data to accelerate the introduction of cooling water from the cooling tank 1 into the water supply cover 11, ensuring that there is always enough cooling medium in the water supply cover 11 to participate in the circulation cooling, and avoiding the impact of insufficient cooling medium on the cooling effect and normal operation of the equipment.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cooling device for polyester film production, characterized in that, include: A cooling box (1) is provided with a water supply cover (11) with a volume smaller than that of the cooling box (1) on the top. Multiple sets of equally spaced sealed bearings (2) are rotatably installed at the bottom of the water supply cover (11) and the top of the cooling box (1). A cooling mechanism is installed between two adjacent sets of sealed bearings (2). The cooling mechanism includes multiple sets of cooling cylinders (21). An extruder (12) is installed on one side of the cooling box (1) and the water supply cover (11). The polyester film conveyed in the extruder (12) passes through multiple sets of cooling cylinders (21) in sequence.

2. The cooling device for polyester film production according to claim 1, characterized in that, The cooling mechanism includes a cooling cylinder (21) installed between two adjacent sets of sealed bearings (2), a gear ring (22) fixedly installed on the outer side of the bottom of each set of cooling cylinders (21), and a gear (23) meshing with the gear ring (22) on one side. The gear rings (22) mesh with each other in two adjacent sets. The two ends of each set of cooling cylinders (21) are connected to the cooling box (1) and the water supply cover (11).

3. A cooling device for polyester film production according to claim 2, characterized in that, A mounting bracket (24) is fixedly installed on the top of the side wall of the cooling box (1). A motor (25) is fixedly installed on the other end of the mounting bracket (24). The output end of the motor (25) is connected to the transmission shaft, and the other end of the transmission shaft is fixedly installed on the central shaft of the gear (23).

4. A cooling device for polyester film production according to claim 1, characterized in that, A liquid pump (3) is fixedly installed at one end of the bottom of the outer side of the cooling box (1). The inlet of the liquid pump (3) is connected to the cooling box (1). A conduit (31) is connected to the outlet of the liquid pump (3). The other end of the conduit (31) is connected to the side wall of the water supply cover (11).

5. A cooling device for polyester film production according to claim 1, characterized in that, The cooling box (1) has an ice discharge trough (32) at one end of its top. A cover plate (33) is mounted on one side of the ice discharge trough (32) via a hinge. The cover plate (33) corresponds to the ice discharge trough (32).

6. A cooling device for polyester film production according to claim 1, characterized in that, A temperature sensor (34) is fixedly installed on one side of the inner wall of the water supply cover (11), and a liquid level sensor (35) is fixedly installed on the other side of the inside of the water supply cover (11).

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