A coating device for an aluminum foil coating

Abstract

The utility model relates to the field of aluminium foil, especially a kind of coating device of aluminium foil coating layer.This device includes conveying mechanism, also includes workbench, the workbench top is provided with coating head, the coating head includes adjustable mould lip and slurry cavity, the sidewall of slurry cavity is provided with ultrasonic vibrator;The cleaning nozzle and corona processor are set in the upstream of the coating head;The conveying mechanism includes clamping stick group, directional roller group and winding roller group, and the clamping stick group, directional roller group and winding roller group are sequentially arranged;Directional roller group is set in the top of workbench.Ultrasonic vibrator makes slurry evenly dispersed by ultrasonic vibration in coating process, effectively controls material flow, avoids high viscosity or fast solidification coating to appear wire drawing or local accumulation phenomenon, improves coating uniformity from source, compared with the way that traditional only relies on rolling correction uniformity, significantly improves coating quality.

Description

Technical Field

[0001] This utility model relates to the field of aluminum foil, and more particularly to a coating device for aluminum foil coating. Background Technology

[0002] Aluminum foil, due to its excellent barrier properties, ductility, and lightweight characteristics, is widely used in food packaging, electronic components, and current collectors for new energy batteries. Applying functional coatings to the surface of aluminum foil is a key process for improving its performance. Traditional coating equipment typically uses a conveyor belt to transport aluminum foil, sprays the surface with a nozzle, and then cures it to form the coating.

[0003] In existing technologies, mechanical rolling is used to roll the sprayed aluminum foil to improve coating uniformity. However, the rolling rollers can only passively correct uniformity after the coating has formed and cannot control material flow in real time during the coating process. For high-viscosity or fast-curing coatings, rolling may cause coating stringing or localized peeling. The surface cleanliness and activation state of the aluminum foil directly affect coating adhesion, but existing devices do not integrate a surface treatment unit and require pre-processing, increasing process complexity. Furthermore, the lack of coordinated control between the spraying system and the conveyor belt speed means that fluctuations in the aluminum foil conveying speed can easily lead to inconsistent coating thickness, which is difficult to fully compensate for with subsequent rolling. Therefore, it is necessary to develop an aluminum foil coating device that integrates coating control, surface treatment, and dynamic adjustment functions to improve coating uniformity and adhesion from the source of the process. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This utility model provides a coating device for aluminum foil, including a conveying mechanism and a worktable. A coating head is arranged above the worktable. The coating head includes an adjustable die lip and a slurry chamber. An ultrasonic vibrator is arranged on the side wall of the slurry chamber. A cleaning nozzle and a corona processor are arranged upstream of the coating head. The conveying mechanism includes a clamping roller group, a directional roller group, and a take-up roller group, which are arranged sequentially. The directional roller group is arranged above the worktable.

[0005] Furthermore, the cleaning nozzles are uniformly arranged perpendicular to the conveying direction of the conveying mechanism.

[0006] Furthermore, the workbench is provided with vacuum adsorption holes evenly distributed in a matrix, and each vacuum adsorption hole is connected to a vacuum chamber located inside the workbench. The vacuum chamber is connected to a vacuum pump through a vacuum pipe.

[0007] Furthermore, a heating strip is provided inside the workbench, and the heating strip is arranged perpendicular to the conveying direction of the conveying mechanism.

[0008] Furthermore, a control box is provided on one side of the workbench, and the cleaning nozzle is connected to the argon gas source device located inside the control box.

[0009] The beneficial effects of this utility model are as follows: During the coating process, the ultrasonic vibrator uses ultrasonic vibration to evenly disperse the slurry, effectively controlling the material flow and preventing stringing or local accumulation of high-viscosity or fast-curing coatings. This improves the uniformity of the coating from the source, significantly enhancing the coating quality compared to the traditional method of correcting uniformity solely through rolling.

[0010] By configuring the clamping roller group, directional roller group, and winding roller group of the conveying mechanism, the smoothness and speed stability of the aluminum foil during the conveying process are ensured. At the same time, the coating head and the conveying mechanism can be controlled in a coordinated manner. When the aluminum foil conveying speed fluctuates, the coating head can adjust the output in time to ensure that the coating thickness is uniform and consistent, avoiding the problem of coating thickness difference caused by speed fluctuations, and providing a good foundation for subsequent processes. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the workbench of this utility model; Figure 3 This is a schematic diagram of the overall structure of this utility model; Figure 4 This is a schematic diagram of the coating head structure of this utility model.

[0012] Explanation of reference numerals in the attached drawings: 1. Conveying mechanism; 2. Coating head; 3. Cleaning nozzle; 4. Corona processor; 5. Worktable; 501. Vacuum adsorption hole; 502. Vacuum chamber; 503. Vacuum pipe; 504. Vacuum pump; 6. Heating strip; 7. Control box; 101. Clamping roller assembly; 102. Orienting roller assembly; 103. Rewinding roller assembly; 201. Adjustable die lip; 202. Slurry chamber; 203. Ultrasonic vibrator. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings.

[0014] This invention provides a coating device for aluminum foil, including a conveying mechanism and a worktable. A coating head 2 is disposed above the worktable 5. The coating head 2 includes an adjustable die lip 201 and a slurry chamber 202. An ultrasonic vibrator 203 is disposed on the side wall of the slurry chamber 202. A cleaning nozzle 3 and a corona processor 4 are disposed upstream of the coating head 2. The conveying mechanism 1 includes a clamping roller assembly 101, a directional roller assembly 102, and a take-up roller assembly 103, which are arranged sequentially. The directional roller assembly 102 is disposed above the worktable 5. When the coating head 2 is working, the slurry chamber 202 stores coating material, and the adjustable die lip 201 can adjust the size of the coating outlet to control the output amount. The ultrasonic vibrator 203 uses high-frequency vibration to evenly disperse the coating material in the slurry chamber 202, preventing stringing or localized accumulation of the coating material due to its high viscosity or fast curing characteristics. This ensures uniform flow of the coating material during application and improves coating uniformity. In the conveying mechanism 1, the clamping roller assembly 101 initially clamps and positions the aluminum foil, the directional roller assembly 102 ensures that the aluminum foil maintains the correct orientation and stable speed during conveying, and the winding roller assembly 103 winds up the coated aluminum foil.

[0015] The cleaning nozzles 3 are uniformly arranged perpendicular to the conveying direction of the conveying mechanism 1. The worktable 5 is provided with a matrix of uniformly distributed vacuum adsorption holes 501, all of which are connected to a vacuum chamber 502 located inside the worktable 5. The vacuum chamber 502 is connected to a vacuum pump 504 via a vacuum pipe 503. The uniform distribution of the cleaning nozzles 3 perpendicular to the conveying direction enables comprehensive and uniform cleaning of the aluminum foil surface. When the aluminum foil passes under the cleaning nozzles 3 driven by the conveying mechanism 1, the cleaning nozzles 3 spray a cleaning medium to remove dust, oil, and other impurities from the aluminum foil surface, providing a clean surface for subsequent coating and improving coating adhesion. After the vacuum pump 504 is started, a negative pressure environment is created inside the vacuum chamber 502 through the vacuum pipe 503. Because the vacuum adsorption holes 501 are evenly distributed in a matrix on the worktable 5 and connected to the vacuum chamber 502, when the aluminum foil is placed on the worktable 5, the negative pressure generated by the vacuum adsorption holes 501 will tightly adsorb the aluminum foil onto the surface of the worktable 5, preventing the aluminum foil from shifting or shaking during the coating process, thus ensuring the stability of the coating and the quality of the coating. A heating strip 6 is installed inside the workbench 5, and the heating strip 6 is arranged perpendicular to the conveying direction of the conveying mechanism 1. A control box 7 is installed on one side of the workbench 5, and the cleaning nozzle 3 is connected to the argon gas source device located inside the control box 7. The heating strip 6 is arranged perpendicular to the conveying direction of the conveying mechanism 1, which can uniformly heat the surface of the aluminum foil as it passes through the workbench 5. Heating can accelerate the curing process of the coating, allowing the coating to form a stable structure more quickly. At the same time, it can also improve the fluidity of the coating, further improve the uniformity and adhesion of the coating, and ensure the coating effect. The control box 7 serves as the control center of the entire device, and can set and adjust the operating parameters of each component. After the cleaning nozzle 3 is connected to the argon gas source device inside the control box 7, argon gas is sprayed out from the cleaning nozzle 3 as the cleaning medium. Argon gas has the characteristics of chemical stability and will not chemically react with the aluminum foil when cleaning the surface of the aluminum foil. It can effectively remove impurities while avoiding damage to the surface of the aluminum foil, thus ensuring the quality of the aluminum foil.

[0016] Through the above specific embodiments, those skilled in the art can easily implement this utility model. However, it should be understood that this utility model is not limited to the specific embodiments described above. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A coating device for coating of aluminium foil, comprising a conveying mechanism (1), characterised in that: It also includes a workbench (5), above which is a coating head (2), the coating head (2) including an adjustable die lip (201) and a slurry chamber (202), and an ultrasonic vibrator (203) is provided on the side wall of the slurry chamber (202); a cleaning nozzle (3) and a corona processor (4) are provided upstream of the coating head (2); the conveying mechanism (1) includes a clamping roller group (101), a directional roller group (102) and a winding roller group (103), the clamping roller group (101), the directional roller group (102) and the winding roller group (103) are arranged in sequence; the directional roller group (102) is located above the workbench (5).

2. A device for coating an aluminum foil coating according to claim 1, characterized in that: The cleaning nozzles (3) are uniformly arranged perpendicular to the conveying direction of the conveying mechanism (1).

3. The coating apparatus for aluminum foil coating according to claim 1, characterized in that: The workbench (5) is provided with vacuum adsorption holes (501) evenly distributed in a matrix. The vacuum adsorption holes (501) are all connected to the vacuum chamber (502) provided inside the workbench (5). The vacuum chamber (502) is connected to the vacuum pump (504) through the vacuum pipe (503).

4. The apparatus for coating an aluminum foil coating of claim 1, wherein: A heating strip (6) is provided inside the workbench (5), and the heating strip (6) is arranged perpendicular to the conveying direction of the conveying mechanism (1).

5. The coating apparatus for aluminum foil coating according to claim 1, characterized in that: A control box (7) is provided on one side of the workbench (5), and the cleaning nozzle (3) is connected to an argon gas source device located inside the control box (7).

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