Film flattening device
By installing a closed drive assembly and flattening roller on the support table, the taper surface roller provides outward tension, the problem of transverse movement of the film during flattening is solved, and the yield of the cast film is improved.
Patent Information
- Application Number
- CN202421884265.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-05
AI Technical Summary
When producing cast films with a thickness of less than 50um, the use of roller flattening devices with curves in the prior art is not effective, resulting in the film being easily slid horizontally during the traction process, resulting in wrinkling and uneven cutting, and reducing the yield rate.
The closed drive assembly and the film flattening assembly installed on the support table are used, including the flattening roller, which is clamped by the upper and lower pressing rollers by pneumatic means, and the tapered surface roller provides an outward tension when rotating to prevent the film from traversing.
Effectively prevent the film from slitting horizontally during flattening, ensure the cutting end surface is regular, and improve the yield of the cast film.
Smart Images
Figure CN223087271U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting film production, in particular to a film flattening device. Background Art
[0002] A casting film is a non-stretched and non-oriented flat extrusion film produced by melt casting and quenching. There are two methods: single-layer casting and multi-layer co-extrusion casting. Compared with blown film, its characteristics are high production speed, high output, and excellent transparency, gloss, and thickness uniformity of the film. It is mainly used in packaging, building materials, and industrial applications.
[0003] When producing casting films with a thickness below 50um, most current casting machines use arc-shaped rollers for flattening. However, the effect on casting films with a small width is poor, which easily causes lateral movement of the film during traction, resulting in wrinkling of the film during edge trimming, and further making the trimming end face irregular and generating impurities such as powder, reducing the product yield. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a film flattening device to solve the above problems.
[0005] The utility model specifically adopts the following technical solutions to achieve the above purpose, including:
[0006] A support table, on the upper end face of which support frames are symmetrically arranged. A closing drive assembly and a film flattening assembly are arranged on the support frames.
[0007] The film flattening assembly includes a flattening roller with a tapered surface, and the film flattening assembly is used to clamp the edge of the film.
[0008] As a further description of the above technical solution, the support frame includes a first support and a second support, and the second support is fixed inside the first support.
[0009] As a further description of the above technical solution, 1 - 2 groups of the closing drive assembly and the film flattening assembly are arranged at equal distances.
[0010] As a further description of the above technical solution, the closing drive assembly includes a drive cylinder and a telescopic rod, and the closing drive assembly is used to drive the film flattening assembly.
[0011] As a further description of the above technical solution, the drive cylinder is detachably installed on the first support, and a telescopic rod is connected below the drive cylinder.
[0012] As a further description of the above technical solution, the flattening rollers are symmetrically arranged on both sides of the film, and the flattening rollers include a first roller and a second roller.
[0013] As a further description of the above technical solution, the first roller is arranged above the film, the second roller is arranged below the film, and the materials of the first roller and the second roller are rubber.
[0014] As a further description of the above technical solution, the first roller is detachably installed on the telescopic rod on one side of the first bracket, and the first roller moves up and down through the telescopic rod.
[0015] As a further description of the above technical solution, the second roller is detachably installed on one side of the second bracket, and the second roller is used to support the film.
[0016] As a further description of the above technical solution, the taper of the tapered surface is 1:20 - 1:30.
[0017] The beneficial effects of the present utility model are as follows:
[0018] In the present utility model, a closing drive assembly and a film flattening assembly are installed on the support frame. During film production, the film is clamped at the edge by pneumatic means with two upper and lower pressure rollers. The two pressure rollers have a certain taper, and an outward pulling force can be applied to both sides of the film while rotating, so that the film will not move horizontally when being unfolded, thereby ensuring that the film will not wrinkle and effectively improving the yield rate of the cast film.
[0019] To more clearly illustrate the structural features and functions of the present utility model, the present utility model will be described in detail below in conjunction with the drawings and specific embodiments. Description of the Drawings
[0020] Figure 1 is a schematic structural diagram of the film flattening device of the present utility model;
[0021] Figure 2 is a top view of the film flattening assembly of the present utility model;
[0022] Figure 3 is a side view of the film flattening assembly of the present utility model;
[0023] Figure 4 is an enlarged schematic diagram of the film flattening assembly of the present utility model.
[0024] Reference Signs:
[0025] 1. Support platform; 2. Support frame; 21. First support; 22. Second support; 3. Closing drive assembly; 31. Drive cylinder; 32. Telescopic rod; 4. Film flattening assembly; 41. First roller; 42. Second roller; 43. Tapered surface; 5. Film. Detailed implementation manner
[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
[0027] As Figures 1 - 4 shown, in one embodiment, a film flattening device includes: a support platform 1, on the upper end face of the support platform 1, support frames 2 are symmetrically arranged, and a closing drive assembly 3 and a film flattening assembly 4 are arranged on the support frames 2. Among them, the closing drive assembly 3 is used to drive the film flattening assembly 4 to move, and the film flattening assembly 4 is used to clamp the edge of the film 5 and generate an outward pulling force on it to ensure that its edge does not wrinkle.
[0028] Further, the support frame 2 includes a first support 21 and a second support 22. Specifically, the second support 22 is fixed inside the first support 21, and 1-2 groups of the closing drive assembly 3 and the film flattening assembly 4 are arranged at equal distances.
[0029] As Figures 1 - 4 shown, in this embodiment, the closing drive assembly 3 includes a drive cylinder 31 and a telescopic rod 32. Among them, the drive cylinder 31 is detachably installed on the first support 21, and a telescopic rod 32 is connected below the drive cylinder 31. During production, the drive cylinder 31 drives the film flattening assembly 4 to move through the telescopic rod 32, thereby adjusting the magnitude of the pressure applied to the film 5.
[0030] As Figures 1 - 4 shown, in this embodiment, the film flattening assembly 4 includes flattening rollers. Among them, the flattening rollers are symmetrically arranged on both sides of the film 5, and the flattening rollers include a first roller 41 and a second roller 42. Among them, the first roller 41 is arranged above the film 5, and the second roller 42 is arranged below the film 5.
[0031] Further, the first roller 41 is detachably installed on the telescopic rod 32 on one side of the first support 21, and the second roller 42 is detachably installed on one side of the second support 22. During production, the first roller 41 moves up and down through the telescopic rod 32 to apply pressure to the film 5; the second roller 42 is used to support the film 5. Specifically, the materials of the first roller 41 and the second roller 42 are rubber, which has good wear resistance and elasticity and will not cause damage or scratches when contacting the film 5; in addition, the flattening rollers are provided with a tapered surface 43, and the taper of the tapered surface 43 is 1:20 - 1:30.
[0032] Working principle: A closing drive assembly 3 and a film flattening assembly 4 are installed on the support frame 2. During the film production process, the upper and lower pressure rollers of the film 5 can be closed and clamped on the edge of the film 5 through a pneumatic method. The roller is provided with a rotating bearing and is a passive rotation, which can ensure that its rotation speed is consistent with the moving speed of the film 5. The magnitude of the closing pressure can be adjusted by the driving cylinder 31 to avoid squeezing damage to the film 5. At the same time, the two pressure rollers have a certain taper, and can apply an outward pulling force to both ends of the film 5 during rotation, so that the film 5 will not have a lateral displacement when being flattened, ensuring that the film 5 will not wrinkle, and effectively improving the yield rate of the cast film.
[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A film flattening device, characterized in that, Comprising: A support table (1), on the upper end face of the support table (1), support frames (2) are symmetrically arranged, and a closing drive assembly (3) and a film flattening assembly (4) are arranged on the support frames (2); The film flattening assembly (4) includes flattening rollers, the flattening rollers are provided with tapered surfaces (43), and the film flattening assembly (4) is used to clamp the edge of the film (5).
2. The film flattening device according to claim 1, wherein The support frame (2) includes a first support frame (21) and a second support frame (22), and the second support frame (22) is fixed inside the first support frame (21).
3. The film flattening device according to claim 1, characterized in that, One or two groups of the closing drive assembly (3) and the film flattening assembly (4) are arranged at equal intervals.
4. The film flattening device according to claim 1, characterized in that The closing drive assembly (3) includes a drive cylinder (31) and a telescopic rod (32), and the closing drive assembly (3) is used to drive the film flattening assembly (4).
5. The film flattening device according to claim 4, characterized in that, The drive cylinder (31) is detachably installed on the first support frame (21), and a telescopic rod (32) is connected below the drive cylinder (31).
6. The film flattening device according to claim 5, characterized in that, The flattening rollers are symmetrically arranged on both sides of the film (5), and the flattening rollers include a first roller (41) and a second roller (42).
7. The film flattening device according to claim 6, characterized in that, The first roller (41) is arranged above the film (5), the second roller (42) is arranged below the film (5), and the materials of the first roller (41) and the second roller (42) are rubber.
8. The film flattening device according to claim 6, characterized in that, The first roller (41) is detachably installed on the telescopic rod (32) on one side of the first support frame (21), and the first roller (41) moves up and down through the telescopic rod (32).
9. The film flattening device according to claim 6, characterized in that, The second roller (42) is detachably installed on one side of the second support frame (22), and the second roller (42) is used to support the film (5).
10. The film flattening device according to claim 1, characterized in that, The taper of the tapered surface (43) is 1:20 - 1:30.