A casting film anti-rolling device

By combining the cooling structure, narrow-slit air duct, and width adjustment components, the casting film machine has achieved the ability to prevent edge curling of casting films of different widths and thicknesses, solving the problem of insufficient adaptability of existing equipment and improving the stability and applicability of the cooling effect.

CN224426200UActive Publication Date: 2026-06-30QUANZHOU LUOJIANG MINWANG PLASTIC CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QUANZHOU LUOJIANG MINWANG PLASTIC CO LTD
Filing Date
2025-05-29
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing cast film machines suffer from edge curling problems during production because their edge cooling structures cannot adapt to changes in product thickness and width.

Method used

By employing a cooling structure, a narrow-slit duct structure, and a width-adjusting component, and by using a thickness-measuring component to detect the thickness of the cast film in real time, the air supply power is automatically adjusted to change the cooling speed, thereby preventing the cast film of different widths and thicknesses from curling.

Benefits of technology

It improves the adaptability of the casting film machine to casting films of different widths and thicknesses, prevents edge curling, and enhances the stability and applicability of the cooling effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a casting film anti-rolling device, relating to the field of casting film machine technology. It includes a housing, a cooling structure below the housing, and a narrow-slit duct structure, a width adjustment component, and a thickness measuring component inside the housing. This utility model improves practicality by using the cooling structure to achieve qualitative cooling of the casting film, realizing initial cooling capability. Furthermore, the cooperation between the narrow-slit duct structure and the width adjustment component facilitates automatic adjustment of the cooling area to adapt to casting films of different widths, improving applicability and achieving anti-rolling capability for casting films of different widths. The thickness measuring component allows for real-time detection of the casting film thickness, thereby automatically adjusting the air supply power to change the cooling speed, further improving applicability and achieving anti-rolling capability for casting films of different thicknesses. Ultimately, this solves the problem that existing equipment cannot adapt to casting films of different widths and thicknesses.
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Description

Technical Field

[0001] This utility model relates to the field of casting film machine technology, and in particular to a casting film anti-rolling device. Background Technology

[0002] The causes of edge curling (edge ​​warping or uneven winding) during the production of cast film usually involve multiple factors such as materials, processes, and equipment. During the process, the film edges, due to their large exposed area and rapid heat dissipation, undergo excessive shrinkage, resulting in a difference in shrinkage rate between the edges and the center, ultimately leading to edge curling. The solution to this curling problem is usually to use an edge cooling reinforcement structure. Among the existing edge cooling reinforcement structures, auxiliary air cooling structures are the most widely used. However, existing auxiliary air cooling structures lack an adjustment structure to adapt to changes in the thickness and width of the produced products, resulting in them only being able to provide auxiliary cooling for a single product. Therefore, this utility model improves the existing equipment to address the above problems. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a casting film anti-rolling device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a casting film anti-rolling device, comprising a housing, a cooling structure below the housing, and a narrow slit duct structure, a width adjustment component, and a thickness measurement component inside the housing.

[0005] Preferably, the cooling structure includes a quenching cylinder with multiple cooling water channels on its left and right sides, a cooling roller at the front upper part of the quenching cylinder, the outer side of the cooling roller abutting against a thickness measuring component, two rubber rollers at the rear lower part of the outer side of the quenching cylinder, a traction roller at the front lower part of the outer side of the cooling roller, and a thin film attached to the outer surface of the cooling structure.

[0006] Preferably, the narrow duct structure includes a narrow duct, an air outlet is provided below the front end of the outer side of the narrow duct, and a supply hose is connected to the rear end of the narrow duct via a flange ring, the supply hose being a Y-type tee pipe.

[0007] Preferably, the width adjustment component includes a motor, which is mounted and fixed on the outer surface of the housing. A bidirectional threaded rod is connected to one side of the motor, and both ends of the bidirectional threaded rod are rotatably connected to a bearing disc.

[0008] Preferably, the bearing disc is mounted and fixed on both sides of the outer casing, and threaded seats are sleeved on both sides of the outer side of the bidirectional threaded rod, and the threaded seats are mounted and fixed above the front end of the outer side of the narrow slit duct.

[0009] Preferably, the thickness measuring component includes an inclined sleeve, which is obliquely fixed below the front end of the outer side of the narrow slit duct. A sliding hole is provided inside the inclined sleeve, and a thickness sensor is installed and fixed on the bottom surface of the sliding hole. A sliding frame is provided in front of the thickness sensor, and a spring is provided between the sliding frame and the bottom surface of the sliding hole. A detection wheel is rotatably connected to the sliding frame.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model improves practicality by using a cooling structure to cool and stabilize the cast film, thus achieving initial cooling capability for the cast film; furthermore, the combination of a narrow-slit duct structure and a width-adjusting component facilitates automatic adjustment of the cooling area to adapt to cast films of different widths, improving applicability and achieving anti-rolling capability for cast films of different widths; furthermore, the thickness measuring component facilitates real-time detection of the cast film thickness, thereby automatically adjusting the air supply power to change the cooling speed, improving applicability and achieving anti-rolling capability for cast films of different thicknesses; ultimately, it solves the problem that existing equipment cannot adapt to cast films of different widths and thicknesses. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0012] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the device proposed in this utility model;

[0013] Figure 2 This is a three-dimensional schematic diagram of the internal structure of the cooling system proposed in this utility model;

[0014] Figure 3 This is a three-dimensional schematic diagram of the narrow-slit duct structure proposed in this utility model;

[0015] Figure 4 This is a three-dimensional schematic diagram of the width adjustment component structure proposed in this utility model;

[0016] Figure 5 This is a three-dimensional schematic diagram of the thickness measuring component structure proposed in this utility model.

[0017] The components in the diagram are numbered as follows: 1. Outer shell; 2. Rapid cooling cylinder; 3. Cooling roller; 4. Traction roller; 5. Film; 6. Rubber roller; 7. Narrow slit duct; 8. Air supply hose; 9. Motor; 10. Bidirectional threaded rod; 11. Bearing disc; 12. Threaded seat; 13. Inclined sleeve; 14. Thickness sensor; 15. Sliding frame; 16. Spring; 17. Detection wheel. Detailed Implementation

[0018] 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.

[0019] Example: See Figure 1-5 This utility model discloses a casting film anti-rolling device, which includes a housing 1. A cooling structure is provided below the housing 1. The housing 1 contains a narrow slit duct structure, a width adjustment component, and a thickness measuring component. The modular design facilitates device maintenance and upgrades, providing practicality. The cooling structure includes a quenching cylinder 2. Multiple cooling water channels are provided on the left and right sides of the quenching cylinder 2. A cooling roller 3 is provided above the front of the quenching cylinder 2. The outer side of the cooling roller 3 abuts against the thickness measuring component. Two rubber rollers 6 are provided below the rear of the outer side of the quenching cylinder 2. A traction roller 4 is provided below the front of the outer side of the cooling roller 3. A thin film 5 is attached to the outer surface of the cooling structure. The casting film is cooled and stabilized by the cooling structure, which improves practicality.

[0020] In this utility model, to solve the problem that existing equipment cannot adapt to cast films of different widths and thicknesses, the following technical solution is adopted: A narrow-slit duct structure includes a narrow-slit duct 7. An air outlet is provided below the front end of the outer side of the narrow-slit duct 7. A supply hose 8 is connected to the rear end of the narrow-slit duct 7 via a flange ring. The supply hose 8 is a Y-shaped tee pipe. The width adjustment component includes a motor 9, which is mounted and fixed on the outer side of the housing 1. A bidirectional threaded rod 10 is connected to one side of the motor 9. Both ends of the bidirectional threaded rod 10 are rotatably connected to bearing discs 11. The bearing discs 11 are mounted and fixed on both sides of the housing 1. Threaded seats 12 are sleeved on both sides of the outer side of the bidirectional threaded rod 10. The thickness measuring component, including an inclined sleeve 13, is fixed above the front end of the outer side of the narrow duct 7. The inclined sleeve 13 is tilted and fixed below the front end of the outer side of the narrow duct 7. A sliding hole is opened inside the inclined sleeve 13, and a thickness sensor 14 is installed and fixed on the bottom surface of the sliding hole. A sliding frame 15 is provided in front of the thickness sensor 14, and a spring 16 is provided between the sliding frame 15 and the bottom surface of the sliding hole. A detection wheel 17 is rotatably connected to the sliding frame 15. Through the cooperation of the narrow duct structure and the width adjustment component, the cooling area can be automatically adjusted to adapt to the casting film of different widths, thus improving applicability. The thickness measuring component facilitates real-time detection of the casting film thickness, thereby automatically adjusting the air supply power to change the cooling speed, further improving applicability.

[0021] Working principle: When using this utility model, firstly, power is supplied to all electrical equipment, then the motor 9 is started, which drives the bidirectional threaded rod 10 to rotate, thereby driving the threaded seat 12 sleeved on the outer side to make relative movement until the position of the narrow slit duct 7 is adjusted to a suitable position. Then, the air supply equipment is started to spray auxiliary air from the slot below the narrow slit duct 7 to form a cooling zone. When the film 5 is cooled and formed by the cooling cylinder 2 and the rubber roller 6 and then wound into the outer shell 1, the edge of the film 5 is cooled at a stable rate under the action of the cooling zone to prevent rapid shrinkage into curling. At the same time, the detection wheel 17 is compressed by the film 5 to compress the spring 16, thereby causing the thickness sensor 14 to detect the thickness of the film 5, and thus feeding back to the air supply equipment to adjust the air supply volume and temperature cooling rate, ultimately realizing the device's ability to prevent curling of cast films of different thicknesses and widths.

[0022] 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 casting film anti-rolling device, comprising a housing (1), characterized in that: A cooling structure is provided below the outer shell (1), and a narrow duct structure, a width adjustment component and a thickness measurement component are provided inside the outer shell (1); The cooling structure includes a quenching cylinder (2), which has multiple cooling water channels on its left and right sides. A cooling roller (3) is provided above the front of the quenching cylinder (2). The outer side of the cooling roller (3) abuts against the thickness measuring component. Two rubber rollers (6) are provided below the rear of the outer side of the quenching cylinder (2). A traction roller (4) is provided below the front of the outer side of the cooling roller (3). A thin film (5) is attached to the outer surface of the cooling structure.

2. The anti-rolling device for cast film according to claim 1, characterized in that: The narrow duct structure includes a narrow duct (7), an air outlet is provided below the front end of the outer side of the narrow duct (7), and a supply hose (8) is connected to the rear end of the narrow duct (7) through a flange ring. The supply hose (8) is a Y-type tee pipe.

3. The anti-rolling device for cast film according to claim 1, characterized in that: The width adjustment assembly includes a motor (9), which is mounted and fixed on the outer side of the housing (1). A bidirectional threaded rod (10) is connected to one side of the motor (9), and both ends of the bidirectional threaded rod (10) are rotatably connected to the bearing disc (11).

4. The anti-rolling device for cast film according to claim 3, characterized in that: The bearing disc (11) is installed and fixed on both sides of the outer shell (1), and the two-way threaded rod (10) is fitted with threaded seats (12) on both sides of its outer side. The threaded seats (12) are installed and fixed above the front end of the outer side of the narrow slit duct (7).

5. The anti-rolling device for cast film according to claim 1, characterized in that: The thickness measuring component includes an inclined sleeve (13), which is fixed at an angle below the front end of the outer side of the narrow slit duct (7). A sliding hole is provided inside the inclined sleeve (13), and a thickness sensor (14) is installed and fixed on the bottom surface of the sliding hole. A sliding frame (15) is provided in front of the thickness sensor (14), and a spring (16) is provided between the sliding frame (15) and the bottom surface of the sliding hole. A detection wheel (17) is rotatably connected to the sliding frame (15).