Eva fog film coating uniform coating device

Abstract

The utility model relates to the field discloses EVA mist elimination film coating even coating device, including shell, unwinding roller and winding roller, it is equipped with coating assembly, T -shaped groove and coating recovery system. The coating assembly includes motor, the connecting seat that transmission mechanism connects, scraper and limit block, the limit block is slidably fitted in the T -shaped groove, and motor drive connecting seat drives scraper reciprocating motion, realizes even coating. The coating recovery system includes the collecting box under, heating device, storage tank and liquid pump, and the coating scraped off is collected after liquefying by heating device, and is transported back coating tank by liquid pump and is recycled. The utility model structure design is ingenious, guarantees the evenness of coating through accurate orientation and drive, realizes the automatic recovery of coating simultaneously, saves the cost, reduces the pollution, has very high practical value.

Description

Technical Field

[0001] This utility model relates to the field of polymer film processing equipment technology, and in particular to an EVA anti-fog film coating uniform coating device. Background Technology

[0002] EVA anti-fog film, as a functional polymer material, is widely used in agriculture, packaging, and other fields. To further enhance its optical properties or endow it with specific functions, a functional coating is usually applied to its surface. Therefore, efficient and precise coating equipment plays a crucial role in the production and processing of EVA anti-fog film.

[0003] In conventional coating processes, the blade coating method is typically used to treat thin films. This method involves applying liquid coating to the film surface and then using a blade to reciprocate across the surface to spread the coating evenly, forming a wet film of uniform thickness. The final uniformity of the coating is directly related to the smoothness of the blade movement.

[0004] However, existing coating devices have shortcomings in achieving smooth squeegee movement. Some devices have relatively simple drive and guide structures, which can easily cause minor vibrations, deflections, or wobbling during high-speed reciprocating squeegee operation due to mechanical clearances or insufficient support rigidity. These unstable movements directly affect the interface between the coating and the film, leading to defects such as uneven thickness, streaks, or marks in the final cured coating. This affects the optical performance and overall quality of the product, making it difficult to meet high-precision coating requirements.

[0005] Therefore, this utility model proposes an EVA anti-fog film coating uniform coating device to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an EVA anti-fog film coating uniform coating device, which aims to improve the problems of poor coating uniformity caused by unstable scraper movement and waste and pollution caused by the difficulty in recycling scraped paint in the existing EVA anti-fog film coating uniform coating device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An EVA anti-fogging film coating uniform coating device includes: a housing; an unwinding roller and a winding roller disposed inside the housing; a support plate disposed on the housing; a paint tank fixed to the top of the support plate and a spray head in fluid communication with the paint tank; a T-groove disposed on the housing; a coating assembly; a collection tank located below the scraper; a heating device for heating the collection tank; a storage tank communicating with the bottom of the collection tank; and a liquid pump for conveying the paint in the storage tank to the paint tank.

[0008] The coating assembly is fixed to the outside of the housing by a support base and a support column, and includes a scraper, a connecting seat, a limiting block and a motor.

[0009] Furthermore, the connecting seat is fixedly connected to the scraper, the limiting block is fixed to the outside of the connecting seat and is slidably disposed in the T-shaped groove, and the motor drives the connecting seat to reciprocate through the transmission mechanism.

[0010] Preferably, the transmission mechanism includes a first transmission rod, a second transmission rod, and a transmission column; the output shaft of the motor is connected to one end of the first transmission rod, the other end of the first transmission rod is rotatably connected to the second transmission rod, and the second transmission rod is connected to the connecting seat through the transmission column.

[0011] Preferably, the device further includes a fixing plate and a limiting plate, and the first transmission rod and the second transmission rod are slidably disposed on the fixing plate and the limiting plate.

[0012] Preferably, a spring is provided between the connecting seat and the scraper, and the connection between the spring and the scraper is covered by a protective shell.

[0013] Preferably, the heating device includes a heating tube disposed along the inner wall of the collection box.

[0014] Preferably, the liquid pump is connected to the storage tank and the paint tank via a hose.

[0015] Preferably, the device further includes a control box disposed on the housing, which is electrically connected to the motor, the heating device and the liquid pump, for coordinated control of the overall operation of the device.

[0016] Preferably, a plurality of conveyor rollers are provided between the unwinding roller and the winding roller, which are used to support and guide the EVA anti-fog film.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by setting a coating component driven by a motor, and utilizing the sliding guide cooperation between the limiting block and the T-groove, as well as the elastic pressure adjustment of the scraper by the spring, the problem of uneven coating caused by unstable scraper movement and uneven scraping pressure in the prior art is solved. The technical effect of making the scraper move smoothly and with moderate pressure, ensuring uniform coating thickness, and significantly improving coating quality is achieved.

[0018] 2. In this utility model, by setting up a heating device to heat the collection box and using a liquid pump to transport the liquefied paint that has been scraped off back to the paint box, the problem of waste and pollution caused by the easy solidification and difficulty in recycling of the scraped paint in the prior art is solved. This achieves the technical effect of realizing automatic recycling and reuse of paint, effectively saving raw materials, reducing production costs and reducing environmental pollution. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the EVA anti-fog film coating uniform coating device proposed in this utility model; Figure 2 This is a cross-sectional schematic diagram of the outer shell of the EVA anti-fog film coating uniform coating device proposed in this utility model; Figure 3 This is a schematic diagram of the support base for the uniform coating device for EVA anti-fog film proposed in this utility model; Figure 4 This is a schematic diagram of the structure of the fixing plate of the EVA anti-fog film coating uniform coating device proposed in this utility model. Legend: 1. Outer shell; 2. Unwinding roller; 3. Rewinding roller; 4. Storage box; 5. Control box; 6. Coating assembly; 601. Motor; 602. Transmission rod two; 603. Transmission column; 604. Connecting seat; 605. Limiting block; 606. Spring; 607. Scraper; 608. Protective shell; 609. Support seat; 610. Support column; 611. Transmission rod one; 612. Fixing plate; 613. Limiting plate; 7. Heating device; 8. Paint tank; 9. T-slot; 10. Support plate; 11. Heating tube; 12. EVA anti-fog film; 13. Conveyor roller; 14. Collection box; 15. Hose; 16. Spray head; 17. Liquid pump. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 4 This utility model provides an EVA anti-fogging film coating uniform coating device, which aims to solve the problems of uneven coating caused by unstable scraper movement in the coating device in the prior art, and the waste and pollution caused by the difficulty of paint recycling.

[0022] like Figure 1 and Figure 2 As shown, the EVA anti-fog film coating uniform coating device includes a housing 1, which serves as the mounting base and main frame of the entire device. Inside the housing 1 are unwinding rollers 2 and take-up rollers 3 for conveying the EVA anti-fog film 12. Between the unwinding rollers 2 and the take-up rollers 3, there are also multiple conveying rollers 13 for supporting and guiding the EVA anti-fog film 12. These conveying rollers 13 ensure the flatness and stability of the EVA anti-fog film 12 during the conveying process.

[0023] The device mainly consists of a paint supply and coating system and a paint recycling system installed on the outer casing 1, forming an organic whole.

[0024] Specifically, a support plate 10 is provided on the outer shell 1, and a paint tank 8 is fixedly connected to the top of the support plate 10. The paint tank 8 sprays paint onto the surface of the moving EVA anti-fog film 12 through a spray head 16 that is in fluid communication.

[0025] The core component of the device is a coating assembly 6. To ensure its structural stability during operation, the coating assembly 6 is fixedly connected to the outside of the housing 1 via a support base 609 and a support column 610. A T-shaped groove 9 is provided on the housing 1 corresponding to the position of the coating assembly 6, providing precise guidance for the moving parts of the coating assembly 6. The coating assembly 6 includes a connecting seat 604, on which a scraper 607 for smoothing the coating is fixedly connected. A limiting block 605 is fixedly fixed to the outside of the connecting seat 604, and the limiting block 605 is slidably disposed inside the T-shaped groove 9. Through the sliding engagement between the limiting block 605 and the T-shaped groove 9, the connecting seat 604 and its driven scraper 607 can smoothly perform reciprocating linear motion. This stable guiding structure is a key guarantee for achieving coating uniformity. The coating assembly 6 also includes a motor 601, which drives the connecting seat 604 to reciprocate along the guide path of the T-groove 9 via a transmission mechanism, thereby achieving uniform coating of the EVA anti-fog film 12.

[0026] To achieve the recycling and reuse of paint, the device is also equipped with a recycling system, which includes a collection box 14 located below the scraper 607, a heating device 7 for heating the collection box 14, a storage box 4 connected to the bottom of the collection box 14, and a liquid pump 17 for transporting the paint in the storage box 4 back to the paint box 8. These components together constitute a complete paint recycling and circulation path.

[0027] Please refer to the following carefully. Figure 3 and Figure 4 The core structure will be described in detail below: The power source for the coating component 6 is a motor 601. The output shaft of the motor 601 is connected to one end of the transmission rod 611 of the transmission mechanism. The transmission mechanism also includes a transmission rod 602 and a transmission column 603. The other end of the transmission rod 611 is rotatably connected to the transmission rod 602. The transmission rod 602 is connected to the connecting seat 604 through the transmission column 603. Through this crank-connecting rod type transmission mechanism, the rotational motion output by the motor 601 can be smoothly converted into the linear reciprocating motion of the connecting seat 604.

[0028] To further ensure the stability of the transmission process, the device is also equipped with a fixed plate 612 and a limiting plate 613. The transmission rod 611 and the transmission rod 602 slide between the fixed plate 612 and the limiting plate 613. The fixed plate 612 and the limiting plate 613 provide effective constraints and support for the movement trajectory of the transmission rods, avoiding shaking or swaying during the movement process, and ensuring that the power can be transmitted to the connecting seat 604 efficiently and accurately.

[0029] In terms of the scraping function, a spring 606 is provided between the connecting seat 604 and the scraper 607. The presence of the spring 606 enables the scraper 607 to have a certain buffering and adaptive adjustment capability when it comes into contact with the EVA anti-fog film 12. It can provide a continuous and gentle pressure to ensure that the scraper 607 is in close contact with the surface of the film, effectively scraping off excess paint and forming a coating of uniform thickness, while avoiding scratches on the film surface that may be caused by rigid contact. In order to protect the connection between the spring 606 and the scraper 607 from paint contamination and external impact, the connection is covered by a protective shell 608.

[0030] In a preferred embodiment, in order to efficiently and uniformly heat the coating in the collection box 14 to prevent it from curing, the heating device 7 specifically includes a heating tube 11, which is arranged along the inner wall of the collection box 14. This arrangement allows heat to be directly and quickly transferred to the coating adhering to the inner wall and deposited at the bottom, ensuring that the coating always maintains good fluidity so that it can flow smoothly into the storage box 4.

[0031] As another preferred embodiment, in order to achieve flexible delivery of recycled paint and simplify pipeline layout, the liquid pump 17 is connected to the storage tank 4 and the paint tank 8 via a hose 15. Using a hose 15 for connection can effectively absorb the vibration generated during equipment operation, prevent rigid pipelines from loosening or being damaged due to vibration, and facilitate installation and maintenance.

[0032] In another preferred embodiment, in order to achieve centralized control and coordinated operation of all functional modules of the entire device, the device also includes a control box 5 located on the outer casing 1. The control box 5 is electrically connected to the motor 601, the heating device 7 and the liquid pump 17. Through the control box 5, the start and stop of the coating component 6, the working temperature of the heating device 7 and the pumping timing of the liquid pump 17 can be controlled in a unified manner to realize an automated production process.

[0033] As another preferred embodiment, in order to ensure that the EVA anti-fog film 12 maintains a flat and stable tension before entering the coating area, a plurality of conveyor rollers 13 are provided between the unwinding roller 2 and the winding roller 3. These conveyor rollers 13 together form a stable film conveying path, which supports and guides the EVA anti-fog film 12, providing a reliable process basis for subsequent uniform coating.

[0034] Working principle: When performing the coating operation, the EVA anti-fog film 12 roll to be coated is first placed on the unwinding roller 2 inside the housing 1. The end of the EVA anti-fog film 12 is guided and supported by multiple conveying rollers 13 and finally wound onto the take-up roller 3. The equipment is started by the control box 5, and the unwinding roller 2 and the take-up roller 3 rotate synchronously, so that the EVA anti-fog film 12 passes smoothly through the coating area inside the equipment.

[0035] When the EVA anti-fog film 12 moves, the paint in the paint box 8 fixed on the top of the support plate 10 is sprayed onto the surface of the EVA anti-fog film 12 through the spray head 16. At the same time, the coating assembly 6 fixed on the outside of the outer shell 1 starts to operate. The motor 601 inside it starts as a power source and transmits power to the connecting seat 604 through the transmission mechanism composed of transmission rod 1 611, transmission rod 2 602 and transmission column 603. The limiting block 605 fixed on the outside of the connecting seat 604 slides inside the T-shaped groove 9. This precise guiding fit ensures that the connecting seat 604 drives the scraper 607 fixed on it to perform a smooth reciprocating linear motion. The spring 606 between the scraper 607 and the surface of the EVA anti-fog film 12 plays a role in buffering and automatic pressure adjustment, ensuring that the pressure between the scraper 607 and the film surface is moderate, thereby scraping the sprayed paint evenly. Through this precise mechanical fit and pressure control, this utility model solves the problem of poor coating quality caused by unstable scraper movement and uneven pressure in the prior art.

[0036] During the coating process, the excess paint scraped off by the scraper 607 falls into the collection box 14 below. The heating tube 11 in the heating device 7 continuously heats the inner wall of the collection box 14, keeping the paint in a liquefied state and allowing it to flow smoothly into the storage box 4. This effectively prevents blockage and waste caused by paint curing. When the amount of paint collected in the storage box 4 reaches a certain level, the control box 5 starts the liquid pump 17 to transport the paint in the storage box 4 back to the paint box 8 through the hose 15. This realizes the automatic recycling and reuse of paint, reducing raw material waste and environmental pollution.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An EVA anti-fog film coating uniform coating device, comprising: Outer shell (1); Control box (5); The unwinding roller (2) and the winding roller (3) are located inside the outer casing (1); A paint tank (8) is located above the outer casing (1) and a spray head (16) is connected to the paint tank (8). A support base (609) is provided on the outside of the outer shell (1) and a support column (610) is fixed on the top of the support base (609). Its features are, The device further includes a coating assembly (6) and a T-groove (9) arranged along the conveying path of the EVA anti-fog film (12); the coating assembly (6) includes a scraper (607), a connecting seat (604) connected to the scraper (607), a limiting block (605) slidably arranged in the T-groove (9), and a motor (601) for driving the connecting seat (604) to reciprocate. The device also includes a collection box (14) located below the scraper (607), a heating device (7) for heating the collection box (14), a storage box (4) in communication with the collection box (14), and a liquid pump (17) for conveying the paint in the storage box (4) to the paint box (8).

2. The EVA anti-fogging film coating uniform coating device according to claim 1, characterized in that: The motor (601) of the coating assembly (6) is connected to the connecting seat (604) via a transmission rod (611), a fixing plate (612), a limiting plate (613), a transmission rod (602), and a transmission column (603).

3. The EVA anti-fogging film coating uniform coating device according to claim 1, characterized in that: A spring (606) is elastically connected between the connecting seat (604) and the scraper (607).

4. The EVA anti-fogging film coating uniform coating device according to claim 1, characterized in that: The limiting block (605) is fixed to the outside of the connecting seat (604).

5. The EVA anti-fogging film coating uniform coating device according to claim 1, characterized in that: The movement mechanism of the scraper (607) is covered by a protective shell (608).

6. The EVA anti-fogging film coating uniform coating device according to claim 1, characterized in that: The heating device (7) includes a heating tube (11) disposed on the inner wall of the collection box (14).

7. The EVA anti-fogging film coating uniform coating device according to claim 1, characterized in that: The liquid pump (17) connects the storage tank (4) and the paint tank (8) through a hose (15). The bottom of the paint tank (8) is provided with a support plate (10) for support, and the support plate (10) is fixed to the inside of the outer shell (1).

8. The EVA anti-fogging film coating uniform coating device according to claim 1, characterized in that: A plurality of conveyor rollers (13) for guiding the EVA anti-fog film (12) are provided between the unwinding roller (2) and the winding roller (3).

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