Uniform coating machine for quantum dot diffusion plate production

Abstract

The utility model discloses a uniform coater for quantum dot diffusion plate production, including movable feed table and coating roll, the movable feed table is equipped with the gantry, and the coating roll is rotatingly installed between the two side plates of the gantry, the inside top of the gantry is equipped with the liquid spray nozzle in a hoisting manner, and the top of the gantry is equipped with the shunt pipe, and the shunt pipe is equipped with the liquid spray nozzle. A glue solution box is further installed between two side plates of the door frame, the glue solution box is communicated with the flow dividing pipe through a guide pipe and an infusion pump, a scraping plate is arranged between the glue solution box and the coating roller, one end of the scraping plate is attached to the outer wall of the coating roller, the other end of the scraping plate is communicated with the interior of the glue solution box, and a stirring rod is rotationally installed in the glue solution box. According to the utility model, redundant glue on the surface of the coating roller can be scraped by arranging the scraping plate, so that the consistency of the thickness of a glue layer on the surface of the coating roller is further ensured, and meanwhile, the stirring rod in the glue box continuously rotates, so that quantum dot materials in the glue box are uniformly mixed, and the quantum dot materials in the extruded glue are uniformly distributed.

Description

Technical Field

[0001] The utility model relates to the technical field of diffusion plate production, in particular to a uniform coater for producing quantum dot diffusion plates. Background Technique

[0002] Optical diffusion plates are widely used in liquid crystal displays, LED lighting, and imaging display systems. Their main function is to fully scatter incident light to achieve a softer and more uniform illumination effect. Generally, when producing an optical diffusion plate, a quantum dot material needs to be coated on the substrate of the diffusion plate, so as to utilize the quantum dots in the quantum dot material to enhance the light diffusion effect of the diffusion plate.

[0003] When the existing coater is in use, the thickness of the glue layer distributed on the surface of the coating roller is uneven, resulting in poor surface flatness when it is coated on the substrate. Moreover, during the coating process, the quantum dot material in the glue stored in the glue box for a long time is prone to sedimentation, which further leads to uneven distribution of the quantum dot material in the glue and affects the light diffusion effect of the diffusion plate after coating.

[0004] Therefore, we propose a uniform coater for producing quantum dot diffusion plates to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a uniform coater for producing quantum dot diffusion plates to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A uniform coater for producing quantum dot diffusion plates includes a mobile feeding table and a coating roller. A gantry is installed on the mobile feeding table, and the coating roller is rotatably installed between the two side plates of the gantry. An electric motor one for driving the coating roller to rotate is also installed outside one of the side plates of the gantry. A liquid spraying nozzle is suspended from the inner top of the gantry, and a shunt pipe is installed at the top of the gantry. A glue box is also installed between the two side plates of the gantry, and the glue box is communicated with the shunt pipe through a conduit and a liquid extraction pump. A scraper is arranged between the glue box and the coating roller. One end of the scraper is attached to the outer wall of the coating roller, and the other end is communicated with the inside of the glue box. A stirring rod is rotatably installed inside the glue box.

[0008] In a further embodiment, the ends of the coating roller and the stirring rod on the same side are both connected with a first sprocket, and a first chain is sleeved between the two first sprockets.

[0009] In a further embodiment, the liquid spraying nozzle is communicated with the shunt pipe through a plurality of branch pipes, and the plurality of branch pipes are equidistantly distributed along the length direction of the liquid spraying nozzle.

[0010] In a further embodiment, the width of the side of the squeegee close to the coating roller is greater than the length of the coating roller, and the height of this side of the squeegee is higher than the height of the side of the squeegee close to the glue box. Both of the other two sides of the squeegee are provided with retaining strips, and the end of the retaining strip close to the coating roller is in close contact with the end face of the coating roller.

[0011] In a further embodiment, a plurality of rotating cylinders parallel to the coating roller are evenly distributed on the surface of the moving feeding table along the length direction, and the rotating cylinders are rotatably connected to the moving feeding table. A second sprocket is coaxially connected to the end of each rotating cylinder, and all the second sprockets are sleeved with the same second chain for synchronous transmission. A second motor for driving one of the rotating cylinders to rotate is installed on the outer shell of the moving feeding table.

[0012] In a further embodiment, the liquid spraying nozzle adopts a flat strip structure, and the length of the liquid spraying nozzle is less than the length of the coating roller.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By arranging the squeegee, the present utility model can scrape off the redundant glue on the surface of the coating roller, thereby ensuring the consistency of the thickness of the glue layer on the surface of the coating roller. Moreover, the scraped glue can be recycled into the glue box for secondary use. At the same time, the stirring rod in the glue box rotates continuously to facilitate the uniform mixing of the quantum dot material in the glue box and prevent the problem of its sedimentation, so that the quantum dot material in the extruded glue is evenly distributed, thereby effectively enhancing the light diffusion effect after the diffusion plate is coated. Description of the Drawings

[0015] Figure 1 is a right front perspective structural schematic diagram of the present utility model;

[0016] Figure 2 is a left front perspective structural schematic diagram of the present utility model;

[0017] Figure 3 is a top-down perspective structural schematic diagram of the glue box of the present utility model after being opened and installed with the coating roller;

[0018] Figure 4 is a right front perspective structural schematic diagram of the moving feeding table of the present utility model after being partially cut.

[0019] In the figure: 1. Moving feeding table; 11. Rotating cylinder; 12. Second motor; 13. Second sprocket; 14. Second chain; 2. Gantry; 3. Coating roller; 31. First motor; 32. First sprocket; 33. First chain; 4. Liquid spraying nozzle; 5. Glue box; 51. Stirring rod; 6. Squeegee; 61. Retaining strip; 7. Conduit; 8. Liquid pumping pump; 9. Shunt pipe; 91. Branch pipe. Detailed Embodiments

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-3, A uniform coater for the production of quantum dot diffusion plates, including a mobile feeding table 1 and a coating roller 3. A gantry 2 is installed on the mobile feeding table 1. The gantry 2 is composed of two side plates and a top plate. The coating roller 3 is rotatably installed between the two side plates of the gantry 2. An electric motor 31 for driving the rotation of the coating roller 3 is installed outside one of the side plates of the gantry 2. The output shaft of the electric motor 31 is connected to the coating roller 3. A liquid spraying nozzle 4 is suspended from the inner top of the top plate of the gantry 2. A flow dividing pipe 9 is installed at the top end of the top plate of the gantry 2. A glue liquid box 5 is also installed between the two side plates of the gantry 2. The glue liquid box 5 is fixed to the two side plates of the gantry 2, and the glue liquid box 5 is communicated with the flow dividing pipe 9 through a conduit 7 and a liquid pumping pump 8, so as to pump the glue liquid in the glue liquid box 5 into the flow dividing pipe 9, and then extrude it from the liquid spraying nozzle 4. The extruded glue liquid falls on the coating roller 3. In order to ensure the uniformity of the glue liquid distribution on the surface of the coating roller 3, a scraping plate 6 is provided between the glue liquid box 5 and the coating roller 3. One end of the scraping plate 6 is attached to the outer wall of the coating roller 3, so as to scrape off the excess glue liquid on the surface of the coating roller 3. The other end of the scraping plate 6 is communicated with the inside of the glue liquid box 5, so as to recycle the scraped glue liquid into the glue liquid box 5. In order to ensure the uniformity of the distribution of quantum dot materials in the glue liquid in the glue liquid box 5, a stirring rod 51 is rotatably installed inside the glue liquid box 5.

[0024] Please refer to Figure 2 , In order to facilitate the control of the rotation of the stirring rod 51, both ends of the stirring rod 51 extend out of the shell of the glue liquid box 5, and the ends of the coating roller 3 and the stirring rod 51 on the same side are both connected with a first sprocket 32, and a first chain 33 is sleeved between the two first sprockets 32, so that when the coating roller 3 rotates, it can drive the stirring rod 51 to rotate.

[0025] Please refer to Figures 1-3 , The liquid spraying nozzle 4 is communicated with the flow dividing pipe 9 through a number of branch pipes 91, and the number of branch pipes 91 are equidistantly distributed along the length direction of the liquid spraying nozzle 4, so that the flow dividing pipe 9 injects liquid into the liquid spraying nozzle 4 through the branch pipes 91, enabling it to be quickly filled evenly in the liquid spraying nozzle 4. The liquid spraying nozzle 4 adopts a flat strip structure, and the length of the liquid spraying nozzle 4 is less than the length of the coating roller 3, so that the extruded glue liquid can quickly spread on the coating roller 3.

[0026] Please refer to Figures 1-3 , In order to further improve the use effect of the scraping plate 6, the width of the side of the scraping plate 6 close to the coating roller 3 is greater than the length of the coating roller 3, which is convenient for fully scraping the glue liquid on the circumferential side of the coating roller 3, and the height of this side of the scraping plate 6 is higher than the height of the side of the scraping plate 6 close to the glue liquid box 5, so that the scraping plate 6 can be inclined towards the glue liquid box 5, which is convenient for guiding the flow of the glue liquid. Both of the other two sides of the scraping plate 6 are provided with retaining strips 61, and the end of the retaining strip 61 close to the coating roller 3 is closely attached to the end face of the coating roller 3, so that the retaining strip 61 can reduce the overflow of the glue liquid from both end faces of the coating roller 3.

[0027] Please refer toFigure 2 and Figure 4 To facilitate the transmission of the substrate to be processed of the diffusion plate on the moving feeding table 1, a number of rotating cylinders 11 parallel to the coating roller 3 are evenly distributed on the surface of the moving feeding table 1 along the length direction, and the rotating cylinders 11 are rotatably connected to the moving feeding table 1. A second sprocket 13 is coaxially connected to the end of each rotating cylinder 11, and all the second sprockets 13 are sleeved with the same second chain 14 for synchronous transmission. A second motor 12 for driving one of the rotating cylinders 11 to rotate is installed on the outer shell of the moving feeding table 1, and the output of the second motor 12 is connected to the end shaft of one of the rotating cylinders 11. By driving the rotation of this rotating cylinder 11, the rotation of other rotating cylinders 11 can be driven by the transmission of the second sprocket 13 and the second chain 14.

[0028] Working principle: During use, the substrate to be processed is placed at the front end of the moving feeding table 1, and then the second motor 12 is started to drive the rotating cylinder 11 to rotate clockwise, so that the substrate gradually approaches the coating roller 3. At the same time, the first motor 31 is started, and the first motor 31 drives the coating roller 3 to rotate counterclockwise. The substrate passes under the coating roller 3 and contacts the glue on the surface of the coating roller 3, so that the glue remains on the substrate, thus completing the coating operation.

[0029] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only includes an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A uniform coater for the production of quantum dot diffusion plates, comprising a moving feeding table (1) and a coating roller (3), characterized in that: A gantry (2) is installed on the movable feeding table (1), and the coating roller (3) is rotatably installed between the two side plates of the gantry (2). An electric motor one (31) for driving the coating roller (3) to rotate is also installed outside one of the side plates of the gantry (2). A liquid spraying nozzle (4) is suspended from the inner top of the gantry (2), and a flow dividing pipe (9) is installed at the top end of the gantry (2). A glue liquid box (5) is installed between the two side plates of the gantry (2), and the glue liquid box (5) is communicated with the flow dividing pipe (9) through a conduit (7) and a liquid pumping pump (8). A scraping plate (6) is arranged between the glue liquid box (5) and the coating roller (3). One end of the scraping plate (6) is attached to the outer wall of the coating roller (3), and the other end is communicated with the inside of the glue liquid box (5). A stirring rod (51) is rotatably installed inside the glue liquid box (5).

2. The uniform coater for producing a quantum dot diffusion plate according to claim 1, wherein: Ends of the coating roller (3) and the stirring rod (51) on the same side are both connected with a sprocket one (32), and a chain one (33) is sleeved between the two sprockets one (32).

3. A uniform coating machine for producing quantum dot diffusion plates according to claim 1, characterized in that: The liquid spraying nozzle (4) is communicated with the flow dividing pipe (9) through a plurality of branch pipes (91), and the plurality of branch pipes (91) are equidistantly distributed along the length direction of the liquid spraying nozzle (4).

4. The uniform coater for producing quantum dot diffusion plates according to claim 1, characterized in that: The width of the side of the scraping plate (6) close to the coating roller (3) is greater than the length of the coating roller (3), and the height of this side of the scraping plate (6) is higher than the height of the side of the scraping plate (6) close to the glue liquid box (5). Barriers (61) are arranged on the other two sides of the scraping plate (6), and one end of the barrier (61) close to the coating roller (3) is closely attached to the end face of the coating roller (3).

5. A uniform coating machine for producing quantum dot diffusion plates according to claim 1, characterized in that: A plurality of rotating cylinders (11) parallel to the coating roller (3) are uniformly distributed on the surface of the movable feeding table (1) along the length direction, and the rotating cylinders (11) are rotatably connected with the movable feeding table (1). A sprocket two (13) is coaxially connected to the end of each rotating cylinder (11), and all the sprockets two (13) are sleeved with the same chain two (14) for synchronous transmission. An electric motor two (12) for driving one of the rotating cylinders (11) to rotate is installed on the outer shell of the movable feeding table (1).

6. A uniform coating machine for producing a quantum dot diffusion plate according to claim 1, characterized in that: The liquid spraying nozzle (4) adopts a flat strip structure, and the length of the liquid spraying nozzle (4) is less than the length of the coating roller (3).

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