Polyester film cooling device with thickness detection function
By employing multiple cooling methods and a clamping assembly design, the problem of low cooling efficiency in polyester film production is solved, enabling rapid cooling and thickness detection, making it suitable for polyester film production and processing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-03
AI Technical Summary
Existing cooling devices used in polyester film production have low cooling efficiency and cannot achieve rapid and effective cooling.
Multiple cooling methods are employed, including liquid cooling, air cooling, and water mist cooling. Combined with optical thickness detection, multiple cooling and thickness detection of the thin film are achieved through clamping components and motor drive.
This technology enables rapid cooling and precise thickness detection of polyester films, improving cooling efficiency and facilitating subsequent processing.
Smart Images

Figure CN224074800U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polyester film production technology, and in particular to a polyester film cooling device with thickness detection function. Background Technology
[0002] Polyester film is a film material made from polyethylene terephthalate (PET) through extrusion to form thick sheets, which are then biaxially stretched. Currently, PET film is increasingly favored by consumers due to its excellent overall performance. It is widely used in packaging decoration, screen protection, mirror surface protection, electronics, and industrial films. During the production and processing of polyester film, it requires cooling.
[0003] A search revealed Chinese patent application number 202221760382.4, which discloses a cooling device for thin film production, relating to the field of thin film production technology. The device includes a cooling platform with a drive roller mounted on its top and a water-cooling tank inside. Rollers are installed inside the water-cooling tank, and a motor housing is installed at the bottom. A drive motor is installed inside the motor housing, and the output end of the drive motor is connected to a rotating rod inside the water-cooling tank. A stirring rod is mounted outside the rotating rod, and a cooling plate is provided outside the stirring rod. The aforementioned cooling device for thin film production has the following drawback: it cannot effectively and quickly cool the film using only a single water cooling process. Utility Model Content
[0004] The purpose of this invention is to further address the shortcomings of existing technologies by proposing a polyester film cooling device with thickness detection function.
[0005] This device is further configured to achieve the above objectives, and the present invention adopts the following technical solution:
[0006] A polyester film cooling device with thickness detection function includes a cooling device body, a cooling component inside the cooling device body, and clamping components at both ends of the cooling device body. The cooling component includes a liquid chiller installed at the front end of the cooling device body. A cooling roller with a hollow structure is rotatably mounted on the liquid chiller via a bracket. A water pump is installed on one side of the bracket on which the cooling roller is mounted. The liquid chiller is connected to the water pump via a pipe. The cooling device also includes a control panel installed on one side of the cooling device body. Several observation windows are provided on the outer wall of the cooling device body. An optical thickness detector is installed on the inner side of the rear end of the cooling device body.
[0007] As a further embodiment of this utility model: the cooling component also includes an air cooler, which is installed on the main body of the cooling device. The air cooler is located behind the liquid cooler. The air cooler has a U-shaped structure, with several air outlets arranged on the U-shaped surface of the air cooler. A dustproof plate is installed at the air inlet of the air cooler.
[0008] As a further embodiment of this utility model: the cooling assembly also includes a water tank, the water tank is provided inside the main body of the cooling device, a plurality of tension rollers are provided above the water tank, the tension rollers are rotatably mounted on the inner wall of the main body of the cooling device, and a water pump is provided at the bottom of the water tank.
[0009] As a further embodiment of this utility model: the cooling assembly further includes a tension roller, which is rotatably mounted on the inner wall of the cooling device body. Several tension rollers are provided, and a fan is installed on the inner wall of the cooling device body.
[0010] As a further embodiment of this utility model: the cooling assembly further includes a water tank, which is installed on the top of the cooling device body, and the second water pump is connected to the water tank through a pipe.
[0011] As a further embodiment of this utility model: the clamping assembly includes a slide rail, the slide rails are symmetrically arranged, a screw is rotatably installed inside the slide rail, a stepper motor is installed on the top of the slide rail, the output end of the stepper motor passes through the slide rail and is connected to the screw, and a roller is rotatably installed on the screw via a slide block.
[0012] As a further embodiment of this utility model: the cooling device further includes a fixing frame, which is installed inside the rear end of the main body of the cooling device. A servo motor is installed on one side of the fixing frame, a roller is installed at the output end of the servo motor, and a clamping assembly is installed on the top of the fixing frame.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. The polyester film is moved by a clamping assembly. During the movement, the film is initially cooled by a liquid cooler and cooling rollers. Then, the film undergoes a second cooling process by using an air cooler to cool both the top and bottom surfaces of the film. Next, water is sprayed from a nozzle by a water pump to form a water mist for a third cooling process. Finally, a fan blows the water droplets off the film. This multi-stage cooling process allows for rapid cooling of the film, thereby improving cooling efficiency. The film thickness after cooling is measured using an optical thickness gauge, which facilitates further processing and inspection.
[0015] 2. By using a stepper motor to adjust the height of the rollers, the polyester film is clamped, making it easy to move. This allows for the processing of films of different thicknesses. By using a servo motor to drive the rollers on the fixed frame to rotate, automatic film movement can be achieved. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a polyester film cooling device with thickness detection function proposed in this utility model;
[0017] Figure 2 This is a schematic cross-sectional view of a polyester film cooling device with thickness detection function proposed in this utility model.
[0018] Figure 3 This is a schematic diagram of the cooling component proposed in this utility model;
[0019] Figure 4 This is a schematic diagram of the clamping assembly proposed in this utility model.
[0020] In the diagram: 1-Main body of cooling device, 2-Control panel, 3-Observation window, 4-Cooling component, 5-Clamping component, 6-Water tank, 7-Water pump one, 8-Nozzle, 9-Water pool, 10-Tension roller, 11-Water pump two, 12-Fan, 13-Liquid cooler, 14-Fixed frame, 15-Air cooler, 16-Dustproof plate, 17-Cooling roller, 18-Water pump three, 19-Slide rail, 20-Stepper motor, 21-Screw, 22-Roller, 23-Servo motor, 24-Optical thickness gauge. Detailed Implementation
[0021] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.
[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0023] A polyester film cooling device with thickness detection function, such as Figure 1As shown, the device includes a cooling device body 1, a cooling component 4 inside the cooling device body 1, and clamping components 5 at both ends of the cooling device body 1. The cooling component 4 includes a liquid chiller 13, which is installed at the front end of the cooling device body 1. A cooling roller 17 is rotatably mounted on the liquid chiller 13 via a bracket. The cooling roller 17 has a hollow structure. A water pump 3 18 is installed on one side of the bracket on which the cooling roller 17 is mounted. The liquid chiller 13 is connected to the water pump 3 18 via a pipe. The cooling device also includes a control panel 2, which is installed on one side of the cooling device body 1. Several observation windows 3 are provided on the outer wall of the cooling device body 1. An optical thickness detector 24 is installed on the inner side of the tail end of the cooling device body 1.
[0024] The cooling assembly 4 also includes an air cooler 15, which is installed on the main body 1 of the cooling device. The air cooler 15 is located behind the liquid cooler 13. The air cooler 15 has a U-shaped structure, and several air outlets are arranged on the U-shaped surface of the air cooler 15. A dustproof plate 16 is installed at the air inlet of the air cooler 15.
[0025] The cooling assembly 4 also includes a water tank 9. The main body 1 of the cooling device has a water tank 9 inside. Several tension rollers 10 are arranged above the water tank 9. The tension rollers 10 are rotatably installed on the inner wall of the main body 1 of the cooling device. A water pump 2 11 is arranged at the bottom of the water tank 9.
[0026] The cooling assembly 4 also includes a tension roller 10, which is rotatably mounted on the inner wall of the cooling device body 1. Several tension rollers 10 are provided, and a fan 12 is installed on the inner wall of the cooling device body 1.
[0027] The cooling assembly 4 also includes a water tank 6, which is installed on the top of the cooling device body 1, and the water pump 2 11 is connected to the water tank 6 through a pipe.
[0028] The polyester film is moved by the clamping assembly 5. During the movement, the film is initially cooled by the liquid cooler 13 and the cooling roller 17. Then the film is cooled a second time by the air cooler 15 to cool the top and bottom surfaces of the film. Then, water is sprayed from the nozzle 8 by the water pump 7 to form water mist for the third cooling of the film. Finally, the fan 12 blows the water droplets off the film. Through multiple cooling processes, the film can be cooled quickly, thereby improving the cooling efficiency. The thickness of the film after cooling is detected by the optical thickness gauge 24, which is convenient for the next processing inspection.
[0029] This device is further configured such as Figure 3 , Figure 4As shown, the clamping assembly 5 includes a slide rail 19, which is symmetrically arranged. A screw 21 is rotatably installed inside the slide rail 19. A stepper motor 20 is installed on the top of the slide rail 19. The output end of the stepper motor 20 passes through the slide rail 19 and is connected to the screw 21. A roller 22 is rotatably installed on the screw 21 through a slide block.
[0030] The cooling device also includes a fixing frame 14, which is installed inside the rear end of the main body 1 of the cooling device. A servo motor 23 is installed on one side of the fixing frame 14, and a roller 22 is installed at the output end of the servo motor 23. A clamping assembly 5 is installed on the top of the fixing frame 14.
[0031] By using a stepper motor 20 to adjust the height of the roller 22, the polyester film is clamped, making it easy to move. This allows for the processing of films of different thicknesses. By using a servo motor 23 to drive the roller 22 on the fixed frame 14 to rotate, automatic film movement can be achieved.
[0032] Working principle: The height of the roller 22 is adjusted by stepper motor 20 to clamp the polyester film. The roller 22 on the fixed frame 14 is rotated by servo motor 23, thereby moving the polyester film. During the movement, the film is initially cooled by liquid cooler 13 and cooling roller 17. Then the film undergoes a second cooling by air cooler 15 to cool the top and bottom surfaces of the film. Then water is sprayed from nozzle 8 by water pump 7 to form water mist for a third cooling. Finally, the water droplets on the film are blown off by fan 12. Through multiple cooling, the film can be cooled quickly, thereby improving the cooling efficiency. When the film is about to leave the cooling device after cooling is completed, the thickness of the film is detected by optical thickness detector 24.
[0033] The above are merely preferred embodiments of this utility model. For parts that do not require creative effort in circuit control, signal control and transmission, please refer to the prior art. However, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and utility model concept of this utility model, should be included within the protection scope of this utility model.
Claims
1. A polyester film cooling device with thickness detection function, comprising a cooling device body (1), wherein a cooling component (4) is disposed inside the cooling device body (1), and clamping components (5) are disposed at the front and rear ends of the cooling device body (1), characterized in that, The cooling assembly (4) includes a liquid chiller (13), which is installed at the front end of the cooling device body (1). A cooling roller (17) is rotatably mounted on the liquid chiller (13) via a bracket. The cooling roller (17) is a hollow structure. A water pump (18) is installed on one side of the bracket on which the cooling roller (17) is mounted. The liquid chiller (13) is connected to the water pump (18) via a pipe. The cooling device also includes a control panel (2), which is installed on one side of the cooling device body (1). Several observation windows (3) are provided on the outer wall of the cooling device body (1). An optical thickness detector (24) is installed on the inner side of the tail end of the cooling device body (1).
2. The polyester film cooling device with thickness detection function according to claim 1, characterized in that, The cooling assembly (4) also includes an air cooler (15), which is installed on the main body (1) of the cooling device. The air cooler (15) is located behind the liquid cooler (13). The air cooler (15) has a U-shaped structure and several air outlets are arranged on the U-shaped surface of the air cooler (15). A dustproof plate (16) is installed at the air inlet of the air cooler (15).
3. The polyester film cooling device with thickness detection function according to claim 2, characterized in that, The cooling assembly (4) also includes a water tank (9). The water tank (9) is provided inside the cooling device body (1). Several tension rollers (10) are provided above the water tank (9). The tension rollers (10) are rotatably installed on the inner wall of the cooling device body (1). A water pump (11) is provided at the bottom of the water tank (9).
4. A polyester film cooling device with thickness detection function according to claim 3, characterized in that, The cooling assembly (4) also includes a tension roller (10), which is rotatably mounted on the inner wall of the cooling device body (1). Several tension rollers (10) are provided, and a fan (12) is installed on the inner wall of the cooling device body (1).
5. A polyester film cooling device with thickness detection function according to claim 4, characterized in that, The cooling assembly (4) also includes a water tank (6), which is installed on the top of the cooling device body (1), and the second water pump (11) is connected to the water tank (6) through a pipe.
6. A polyester film cooling device with thickness detection function according to claim 5, characterized in that, The clamping assembly (5) includes a slide rail (19) symmetrically arranged, a screw (21) rotatably mounted inside the slide rail (19), a stepper motor (20) mounted on the top of the slide rail (19), the output end of the stepper motor (20) passing through the slide rail (19) and connected to the screw (21), and a roller (22) rotatably mounted on the screw (21) via a slide block.
7. A polyester film cooling device with thickness detection function according to claim 6, characterized in that, The cooling device also includes a fixing frame (14), which is installed inside the rear end of the cooling device body (1). A servo motor (23) is installed on one side of the fixing frame (14), and a roller (22) is installed at the output end of the servo motor (23). A clamping assembly (5) is installed on the top of the fixing frame (14).
Citation Information
Patent Citations
Cooling device for film production
CN218286404U