Release film coating device

Abstract

The utility model discloses a release film coating device. The release film coating device comprises a coating frame, an exhibit roller body and a coating assembly, the coating frame is used for supporting a film material reel, and the tension and the guiding direction of a film material are controlled through the unwinding roller frame, the guiding roller and the tension adjusting roller. The exhibit roller body is provided with the spindle curved surface and the extending edges of the double-spiral convex edge structure, the film material can be effectively guided, and the smoothness in the coating process can be guaranteed. The coating assembly comprises an end guide seat and a spraying pipe, the spraying pipe is connected with the exhibit roller body through the end guide seat and can transversely reciprocate in the coating process, and it is ensured that a coating is evenly sprayed. The device can effectively avoid the problems of wrinkles, non-uniform tension and the like of the film material in the coating process, and ensures that a coating on the surface of the film material is uniformly distributed, so that the coating quality and the production efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of coating device technology, specifically a release film coating device. Background Technology

[0002] Release films are a type of film product made by coating a polymer layer onto the surface of a plastic film, resulting in a surface that has release force against organic pressure-sensitive adhesives. In modern manufacturing, film coating technology is widely used in various industrial production processes, especially in electronics, optics, and packaging. The surface coating quality of the film material directly affects the performance and appearance of the final product. Traditional film coating equipment is mainly used to uniformly coat the film surface. Common coating methods include roller coating, spray coating, and dip coating, with roller coating and spray coating being the two most widely used methods.

[0003] However, existing film coating equipment has some significant problems in the film unwinding and coating processes, mainly including the following:

[0004] Traditional coating equipment typically relies on simple unwinding rollers to guide and unwind the film material during the unwinding process. Due to the material properties of the film itself or the imprecise design of the unwinding rollers, wrinkles and uneven tension can easily occur during unwinding. This unstable unwinding state not only affects the smoothness of the film surface but may also lead to problems such as missed areas during coating and uneven coating thickness, thus affecting the quality of the final film.

[0005] In traditional coating equipment, the film material is often not adequately flattened before entering the spraying or coating area. Wrinkles and unevenness on the film surface lead to uneven distribution of the liquid coating during spraying, resulting in missed areas or excessively thick localized coatings. This uneven coating effect affects the functionality of the film, especially in applications requiring uniform coating, easily leading to unstable product performance or non-reproducible issues.

[0006] In summary, existing film coating technologies have significant shortcomings in the unwinding, tension adjustment, leveling, and spraying processes, necessitating a new device to address these issues. In particular, existing technologies require improvement in precisely controlling the unwinding process, achieving uniform coating, and ensuring effective spraying. Summary of the Invention

[0007] The present invention aims to solve the technical problems existing in the prior art or related technologies.

[0008] The present invention provides a novel release film coating apparatus, comprising: a coating frame, wherein the coating frame is provided with an unwinding roller frame, a guide roller and a tension adjusting roller, the unwinding roller frame is used to support the film roll and to control the unwinding of the film by adjusting its tension;

[0009] The exhibit roller body, in cooperation with the guide roller and the tension regulating roller, further guides the film material. The surface of the exhibit roller body is provided with a spindle curved surface and symmetrically arranged double helical convex rib structure for spreading. Guide ring seats are fixedly installed at both ends of the exhibit roller body.

[0010] The coating assembly includes end guides and spray pipes. There are two end guides, which are symmetrically arranged on both sides of the exhibit roller and are movably connected to the end of the spray pipe through a linkage lug. Each end guide slides against the guide ring seats at both ends of the exhibit roller. One side of the guide ring seat has an inclined structure, and the inclined surfaces of the two guide ring seats are parallel to each other and slide in cooperation with the surface of the end guides.

[0011] The spray pipe is movably connected to the end via an end guide seat, enabling it to reciprocate laterally along the film surface during the film coating process, ensuring the uniformity and stability of the spraying.

[0012] Specifically, the coating rack is the supporting structure of the device of this invention, mainly including an unwinding roller frame, a guide roller, and a tension adjusting roller. The unwinding roller frame supports the film roll and controls the unwinding of the film by adjusting its tension, ensuring that the film maintains a stable tension during the coating process. The guide roller and the tension adjusting roller work together to precisely guide and adjust the tension of the film, ensuring that the film does not become loose or overstretched throughout the coating process.

[0013] The display roller is the core component of this invention, which, in conjunction with the guide roller and tension regulating roller, further guides the film material. The display roller has a specially designed surface structure, including a spindle-shaped surface and symmetrically arranged double-helix convex ridges. This surface structure allows for better control of the film material's flattening effect, reducing wrinkles and ensuring a smooth and flat surface. Furthermore, guide ring seats are fixedly installed at both ends of the display roller to further improve the accuracy of film material guidance.

[0014] The coating assembly mainly consists of end guides and spray pipes, which spray the liquid coating. There are two end guides, symmetrically arranged on both sides of the display roller, and they are movably connected to the ends of the spray pipes via connecting lugs. The end guides slide against the guide ring seats at both ends of the display roller; the guide ring seats have an inclined structure and slide against the surface of the end guides. This design ensures that the spray pipes can make lateral reciprocating movements along the film surface during the coating process, guaranteeing the uniformity and stability of the coating.

[0015] The beneficial effects achieved by this utility model are as follows:

[0016] 1. In this utility model, a reasonable structural design is adopted, which can achieve more precise tension control and stable film material guidance during the film coating process, thereby ensuring the uniformity of coating and avoiding wrinkles or uneven coating distribution on the film surface.

[0017] 2. In this utility model, the horizontal reciprocating motion of the spray pipe and the design of the surface nozzles ensure that the liquid coating is evenly distributed and the coating thickness is consistent during the coating process, thereby improving the quality and stability of the film coating. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the inner cross-section of the coating rack according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the exhibit roller and coating assembly structure according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the surface structure of the exhibit roller body according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the coating component structure according to an embodiment of the present invention.

[0023] Figure label:

[0024] 100. Coating rack; 110. Unwinding roller rack; 120. Guide roller; 130. Tension adjusting roller;

[0025] 200. Display roller body; 210. Guide ring seat; 220. Drive motor; 201. Spindle surface; 202. Developing edge;

[0026] 300. Coating assembly; 310. End guide; 320. Spray pipe; 311. Linking lug. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0028] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0029] The following is in conjunction with the appendix Figures 1-5 This invention describes a release film coating apparatus provided by some embodiments of the present invention.

[0030] A release film coating apparatus includes the following parts:

[0031] The coating rack 100 serves as the framework for the entire unit, supporting all critical components. Several important components are mounted on the coating rack, including:

[0032] Unwinding roller 110: This part is used to support the film roll. By adjusting the tension device on the roller, the unwinding speed and tension of the film are controlled to ensure that the film does not have excessive or insufficient tension during the coating process.

[0033] Guide roller 120: The guide roller 120 is installed at the appropriate position on the coating rack and is mainly used to guide the film material to move forward along the correct path to ensure that the film material surface is flat and wrinkle-free.

[0034] Tension adjusting roller 130: Tension adjusting roller 130 is used to further adjust the tension generated by the film material during the unwinding process, to ensure that the film material remains stable during the coating process and to avoid wrinkles or uneven tension.

[0035] The exhibit roller 200 is used to further guide the film material and has a special surface structure. The specific structure is as follows:

[0036] Spindle surface 201: The surface of the exhibit roller 200 is designed with a spindle surface 201. This special surface design can provide uniform contact pressure when the film material passes through, avoiding irregular coating marks on the film material surface.

[0037] Extending Ribs 202 with Double Helix Raised Ribs: The exhibit roller body 200 is also designed with symmetrically arranged extending ribs 202 with double helix raised ribs. This structure can form a uniform traction force on the surface of the film material, further ensuring that the film material remains flat when passing through the exhibit roller body, and preventing the film material from slipping or folding during the coating process.

[0038] Guide ring seats 210: Guide ring seats 210 are installed at both ends of the exhibit roller body 200. The guide ring seats 210 have an inclined surface structure and slide in engagement with the surface of the end guide seats 310, allowing the end guide seats 310 to slide in connection with both ends of the exhibit roller body 200. The inclined surfaces of the two guide ring seats 210 are parallel to each other and slide in engagement with the surface of the drive motor of the end guide seats 310.

[0039] The coating assembly 300 mainly consists of an end guide 310 and a spray pipe 320, and is used to achieve uniform coating on the surface of the film material.

[0040] End guide seats 310: End guide seats 310 are symmetrically arranged on both sides of the display roller body 200. Each end guide seat is movably connected to the end of the spray pipe 320 through a connecting lug 311. The surface of the end guide seat 310 slides in fit with the guide ring seat 210, so that the spray pipe can move laterally back and forth along the film surface during the coating process, ensuring the uniformity and stability of the spraying.

[0041] Spray pipe 320: The spray pipe 320 is mounted on the end guide 310. The spraying direction of the spray pipe can be adjusted via the movable connection of the end guide. The surface of the spray pipe is equipped with multiple nozzles, the distribution and direction of which are carefully designed to ensure uniform spraying of the coating liquid onto the film surface. During spraying, the spray pipe 320 can reciprocate laterally along the film surface to ensure uniform coating. The surface design of the spray pipe is consistent with the curvature of the spindle surface 201 on the surface of the display roller 200. Lateral oscillation of the spray pipe ensures uniform distribution of the liquid coating, avoiding problems of excessively thick or thin coatings. Example 2

[0042] In this embodiment, the spray pipe 320 can adjust the spray angle and spray volume of its nozzles according to different types of film materials and coating requirements. For example, for film materials of different thicknesses, the nozzles of the spray pipe can be adjusted to a suitable spray angle by adjusting the end guide seat 310 to ensure that the liquid coating is uniformly coated on the surface of the film material.

[0043] Specifically, a drive motor 220 is fixedly installed on one side of the coating rack 100, and the exhibit roller 200 is driven by the drive motor 220. The cooperation between the exhibit roller 200, the unwinding roller rack 110, the guide roller 120, and the tension adjusting roller 130 ensures uniform tension distribution of the film material during the coating process. The distance between the tension adjusting roller 130 and the exhibit roller 200 is adjustable, and the surface tension of the film is dynamically controlled by adjusting the position of the tension adjusting roller 130. The stretching rib 202 is a convex spiral guide bar with a double-segment structure. The two-segment stretching ribs 202 are symmetrically connected and connected at one end. The spindle curved surface 201 is used to guide the film material into a flat shape when the film material is unwound, eliminating possible wrinkles on the film surface and avoiding omissions during the spraying process. The double spiral convex rib structure of the stretching rib 202 is used to flatten and stretch the film material, ensuring a uniform and wrinkle-free film surface.

[0044] Specifically, the distance between the tension adjusting roller 130 and the display roller 200 is adjustable, and the surface tension of the film is dynamically controlled by adjusting the position of the tension adjusting roller 130. The spreading rib 202 is a convex spiral guide bar with a double-segment structure. The two-segment spreading ribs 202 are symmetrically connected and connected at one end. The spindle curved surface 201 is used to guide the film material into a flat shape when unwinding, eliminating possible wrinkles on the film surface and avoiding omissions during the spraying process. The spreading rib 202 with a double spiral convex rib structure is used to flatten and stretch the film material, ensuring that the film surface is uniform and wrinkle-free.

[0045] Working principle:

[0046] When the release film coating apparatus starts working, the film material is pulled out from the unwinding roller 110, guided by the guide roller 120 and tension adjusting roller 130, and uniformly pulled on the display roller 200. The special surface structure of the display roller ensures the smoothness of the film surface. Next, the film material continues to advance, passing through the coating assembly 300, where the spray pipe 320 sprays coating liquid, evenly covering the film surface. The spray pipe 320 can perform lateral reciprocating motion along the film surface, ensuring uniform distribution of the coating liquid, while the nozzles of the spray pipe are precisely designed to avoid excessively thick or thin liquid coatings.

[0047] Implementation effect

[0048] The release film coating apparatus of this invention significantly improves the uniformity and stability of the film coating by combining the special surface design of the display roller 200, the precise control of the spray pipe 320, and the lateral oscillation mode of the coating assembly. By adjusting the tension of the film and the spraying direction, this apparatus can effectively avoid problems such as uneven coating, film slippage, and stretching during the film coating process, thereby improving the coating quality and performance of the release film.

[0049] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A release film coating apparatus characterized by, include: The coating rack (100) is provided with an unwinding roller frame (110), a guide roller (120) and a tension adjusting roller (130). The unwinding roller frame (110) is used to support the film roll and to control the unwinding of the film by adjusting its tension. The exhibit roller (200) guides the film material further by cooperating with the guide roller (120) and the tension regulating roller (130). The exhibit roller (200) has a spindle curved surface (201) and symmetrically arranged double helical convex rib structure extension ribs (202) on its surface. Both ends of the exhibit roller (200) are fixedly installed with guide ring seats (210). The coating assembly (300) includes end guides (310) and spray pipes (320). There are two end guides (310) and they are symmetrically arranged on both sides of the exhibit roller (200). They are movably connected to the end of the spray pipe (320) through a connecting lug (311). Each end guide (310) slides against the guide ring seats (210) at both ends of the exhibit roller (200). One side of the guide ring seat (210) has an inclined structure. The inclined surfaces of the two guide ring seats (210) are parallel to each other and slide in cooperation with the surface of the end guide (310).

2. The release film coating apparatus according to claim 1, wherein The spray pipe (320) is movably connected to the end via the end guide (310), and can make lateral reciprocating motion along the film surface during the film coating process to ensure the uniformity and stability of the spraying. The spray pipe (320) is provided with multiple nozzles facing the surface of the exhibit roller (200) for spraying a uniform liquid coating to ensure the uniform distribution of the coating on the film surface.

3. The release film coating apparatus according to claim 1, wherein The spray pipe (320) can adjust its spraying direction by moving the end guide (310), and the spray pipe (320) has a curvature that is the same as the curvature of the spindle surface (201). By swinging laterally, the spraying surface can cover the entire width of the film, ensuring that the film surface is coated without any omissions.

4. The release film coating apparatus according to claim 1, wherein A drive motor (220) is fixedly installed on one side of the coating rack (100). The exhibit roller (200) is driven by the drive motor (220). The cooperation between the exhibit roller (200) and the unwinding roller rack (110), the guide roller (120), and the tension adjusting roller (130) ensures that the tension of the film material is evenly distributed during the coating process.

5. The release film coating apparatus according to claim 1, wherein The distance between the tension regulating roller (130) and the exhibit roller (200) is adjustable, and the surface tension of the film is dynamically controlled by adjusting the position of the tension regulating roller (130).

6. The release film coating apparatus according to claim 1, wherein The spreading edge (202) is a convex spiral guide bar and has a two-segment structure. The two-segment spreading edges (202) are symmetrically connected and connected at one end. The spindle surface (201) is used to guide the film material into a flat shape when the film material is unwound, eliminate wrinkles that may exist on the film surface, and avoid omissions during the spraying process. The spreading edge (202) with a double spiral convex edge structure is used to flatten and stretch the film material to ensure that the film surface is uniform and wrinkle-free.

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