Optical film double-layer adhesive synchronous coating mechanism

Abstract

The utility model belongs to the technical field of optical thin films, and particularly discloses an optical film double-layer glue synchronous coating mechanism which comprises a conveying mechanism, the conveying mechanism comprises a pressing wheel, a rolling shaft and a transmission wheel, the pressing wheel, the rolling shaft and the transmission wheel are arranged in parallel from left to right at intervals, and the pressing wheel, the rolling shaft and the transmission wheel are all fixed through shaft rotation; the end part of the optical film bypasses the pressing wheel, then passes through the lower side of the rolling shaft, finally passes through the upper side of the transmission wheel and then is conveyed out; a gluing piece; a glue spraying piece; and a cured member. According to the optical film double-layer glue synchronous coating mechanism provided by the utility model, different layers of the same structure are formed by synchronously using two glues, and the picture representation and the transmittance of a product are effectively improved by using the refractive index difference of different glues.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical films, and in particular relates to a synchronous coating mechanism for double-layer adhesives of optical films. Background Art

[0002] A coating machine is a special machine used to automatically apply glue on planar materials.

[0003] A UV coater is a machine specifically designed for applying UV adhesive. It uses a microstructured roller to roll-coat the UV adhesive onto PET / PC optical film. This adhesive is then cured using UV lamps to form a structural layer on the optical PET film, achieving effects such as brightness enhancement and privacy protection.

[0004] Due to the small size of the microstructure, it is impossible to perform secondary coating on the surface after molding. Therefore, the existing technology can only process microstructures with a single layer of glue on the optical film, and cannot produce microstructure products with a double layer of glue, which in turn limits the product's picture performance and product transmittance. Utility Model Content

[0005] The purpose of the present invention is to overcome the above problems existing in the prior art and to provide a dual-layer adhesive synchronous coating mechanism for an optical film, which uses two types of glue to form different layers of the same structure simultaneously, and utilizes the difference in refractive index of different glues to effectively improve the product's picture performance and transmittance.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] A synchronous coating mechanism for a double-layer adhesive of an optical film, comprising:

[0008] The conveying mechanism includes a pressure wheel, a roller and a transmission wheel arranged in parallel and at intervals from left to right, and the pressure wheel, the roller and the transmission wheel are all fixed by shaft rotation;

[0009] An optical film, wherein an end portion of the optical film passes around the pressing wheel, then passes through the lower side of the roller, and finally passes through the upper side of the transmission wheel before being transmitted;

[0010] A gluing unit, located above the pressing wheel, containing glue A and used for spraying glue A on the optical film to form a first glue layer;

[0011] A glue spraying member, the glue spraying member is located above the roller, and the glue spraying member and the roller are both located to the right of the pressure wheel. The glue spraying member stores glue B and is used to spray glue B onto the roller. After the roller rotates, the glue B on the roller adheres to the first glue layer to form a second glue layer;

[0012] The curing component is located below the roller and faces the roller. The curing component is used to cure the first adhesive layer and the second adhesive layer.

[0013] Furthermore, the number of the pressure wheel, roller, and transmission wheel is no less than one.

[0014] Furthermore, the pressure wheel is a rubber wheel.

[0015] Furthermore, the curing member is cured by ultraviolet light curing.

[0016] Furthermore, the roller is a microstructure wheel.

[0017] Furthermore, the glue A and the glue B have different refractive indices.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The utility model provides a dual-layer adhesive synchronous coating mechanism for optical films, which uses two types of glue to form different layers of the same structure simultaneously. The difference in refractive index of different glues is used to effectively improve the product's picture performance and transmittance.

[0020] 2. The working principle of the present invention is as follows: it passes from the top of the pressure wheel (rubber wheel) downward around the bottom of the roller (microstructure wheel), and then passes upward around the top of the transmission wheel, thereby forming a U-shaped conveying path, so that the curing part is located under the roller (microstructure wheel) to irradiate and cure the microstructure adhesive layer to form a microstructure optical film.

[0021] 3. In the present invention, during the coating process, a glue spraying part corresponding to the width of the roller is added above the roller (microstructure wheel); after the optical film passes through the glue-applying part for the glue dripping operation of the first glue A, a first glue layer of glue A is formed on the optical film, which passes from the top of the pressure wheel (rubber wheel) downward through the bottom of the roller (microstructure wheel). At the same time, the glue spraying part synchronously sprays the second glue B on the surface of the roller (microstructure wheel), and the glue B is brought to the optical film with the first glue layer below through the rotation of the roller (microstructure wheel), and then passes through the curing part for ultraviolet light curing, that is, glue A and glue B are cured at the same time. Finally, the optical film passes over the transmission wheel to obtain an optical film with a double-layer glue microstructure.

[0022] 4. In the present invention, since the refractive indices of glue A and glue B are different, different layers of the same structure are formed on the optical film 4. The difference in the refractive indices of glue A and glue B can be utilized to effectively improve the image performance and transmittance of the product.

[0023] 5. The utility model forms two glue layers with the same structure and different refractive indices at one time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 It is a structural diagram of the present utility model.

[0026] Among them, the accompanying drawings are marked as follows: 5, gluing part; 11, gluing part; 9, curing part; 10, conveying mechanism; 4, optical film; 6, pressure wheel; 7, roller; 8, transmission wheel. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] like Figure 1 As shown, a dual-layer adhesive synchronous coating mechanism for an optical film includes a glue-applying component 5, a glue-spraying component 11, a curing component 9, a conveying mechanism 10, and an optical film 4;

[0030] The conveying mechanism 10 includes a pressure wheel 6, a roller 7, and a transmission wheel 8 arranged in parallel and at intervals from left to right. The pressure wheel 6, roller 7, and transmission wheel 8 are all fixed by shaft rotation. The pressure wheel 6, roller 7, and transmission wheel 8 are arranged in parallel and at intervals for conveying the optical film 4. The pressure wheel 6 is a rubber wheel; the roller 7 is a microstructure wheel with a microstructure on the surface.

[0031] Among them, the number of the pressure wheel 6, the roller 7, and the transmission wheel 8 is not less than one;

[0032] The end of the optical film 4 first passes around the pressing wheel 6, then passes through the lower side of the roller 7, and finally passes through the upper side of the transmission wheel 8 before being transmitted;

[0033] A gluing member 5 is provided, which is installed above the pressing wheel 6. The gluing member 5 stores glue A and is used to spray the glue A on the optical film 4 to form a first glue layer.

[0034] The glue spraying member 11, i.e., the glue spraying device, stores glue B therein. The glue spraying member 11 is mounted above the roller 7, with both the glue spraying member 11 and the roller 7 being located to the right of the pressure wheel 6. The glue spraying member 11 is used to spray the glue B onto the roller 7. More specifically, after the glue spraying member 11 sprays the glue B onto the roller 7, the glue B adheres to the roller 7. The glue B on the roller 7 is then carried downward by the roller 7 as it rotates, thereby adhering to the first adhesive layer on the optical film 4, thereby forming a second adhesive layer. In this process, since the roller 7 is a microstructured wheel with a microstructure on its surface, the first adhesive layer and the second adhesive layer can be formed into the same structure.

[0035] In addition, the different refractive indices of glue A and glue B form two layers of glue with the same structure but different refractive indices, which can effectively improve the product's image performance and transmittance.

[0036] The curing component 9 is located below the roller 7 and faces the roller 7. The curing component 9 is used to cure the first adhesive layer and the second adhesive layer. The fixing component 9 cures the first adhesive layer and the second adhesive layer by ultraviolet light curing, thereby forming the same microstructure on the optical film 4.

[0037] The coating process of the optical film double-layer adhesive synchronous coating mechanism provided by the utility model is as follows:

[0038] S1: The optical film 4 is transferred to the left end of the conveying mechanism 10, passes through the pressing wheel 6, and then passes through the gluing unit 5 for the first glue A to be dispensed, thereby forming a first glue layer of glue A on the optical film 4;

[0039] S2: The optical film 4 continues to pass from above the pressure wheel 6 (rubber wheel) downwards and under the roller 7 (microstructure wheel). At the same time, the glue spraying part 11 sprays the second glue B on the surface of the roller 7 (microstructure wheel). The rotation of the roller 7 (microstructure wheel) carries the glue B to the optical film 4 with the first glue layer below, forming a second glue layer on the first glue layer.

[0040] S3: The first adhesive layer and the second adhesive layer on the optical film 4 are then cured by ultraviolet light through the curing component 9, that is, glue A and glue B are cured at the same time. After curing, the optical film 4 is transmitted over the transmission wheel 8, and an optical film with a double-layer glue microstructure is obtained.

[0041] The utility model provides a dual-layer adhesive synchronous coating mechanism for an optical film, which uses two glues simultaneously to form different layers of the same structure, and utilizes the difference in refractive index of different glues to effectively improve the product's picture performance and product transmittance.

[0042] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A synchronous coating mechanism for double-layer adhesives for optical films, characterized in that: include: A conveying mechanism (10), the conveying mechanism (10) comprising a pressure wheel (6), a roller (7) and a transmission wheel (8) arranged in parallel and at intervals from left to right, the pressure wheel (6), the roller (7) and the transmission wheel (8) being fixed by shaft rotation; An optical film (4), wherein the end of the optical film (4) passes around the pressing wheel (6), then passes through the lower side of the roller (7), and finally passes through the upper side of the transmission wheel (8) before being transmitted; A gluing member (5), the gluing member (5) being located above the pressing wheel (6), the gluing member (5) storing glue A therein, and the gluing member (5) being used to spray the glue A on the optical film (4) to form a first glue layer; a glue spraying member (11), the glue spraying member (11) being located above the roller (7), the glue spraying member (11) and the roller (7) both being located on the right side of the pressure wheel (6), the glue spraying member (11) storing glue B, the glue spraying member (11) being used to spray glue B onto the roller (7), the glue B on the roller (7) being adhered to the first glue layer to form a second glue layer after the roller (7) rotates; A curing component (9), the curing component (9) is located below the roller (7), the curing component (9) faces the roller (7), and the curing component (9) is used to cure the first adhesive layer and the second adhesive layer.

2. The optical film double-layer adhesive synchronous coating mechanism according to claim 1, characterized in that: The number of the pressing wheel (6), the roller (7), and the transmission wheel (8) is no less than one.

3. The optical film double-layer adhesive synchronous coating mechanism according to claim 1, characterized in that: The pressing wheel (6) is a rubber wheel.

4. The optical film double-layer adhesive synchronous coating mechanism according to claim 1, characterized in that: The curing element (9) is cured by ultraviolet light curing.

5. The optical film double-layer adhesive synchronous coating mechanism according to claim 1, characterized in that: The roller (7) is a microstructure wheel.

6. The optical film double-layer adhesive synchronous coating mechanism according to claim 1, characterized in that: The glue A and the glue B have different refractive indices.

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