Coating device for production of aluminized paper

Abstract

The utility model relates to the field of aluminized paper production equipment, and discloses a coating device for aluminized paper production, which comprises a coating machine body, a coating roller I, a coating roller II and a coating roller III are rotatably mounted in the coating machine body, and the diameter sizes and the length sizes of the coating roller I, the coating roller II and the coating roller III are the same; the first coating roller is located under the coating machine body, the second coating roller is located under the first coating roller, the third coating roller is located on the right side of the second coating roller, the third coating roller makes contact with the second coating roller, a first coating liquid containing box and a second coating liquid containing box are fixedly installed in the coating machine body, and the first coating liquid containing box is located under the second coating roller. The bottom of the second coating roller extends into the first coating liquid containing box, the second coating liquid containing box is located under the third coating roller, and the bottom of the third coating roller extends into the second coating liquid containing box. The double-sided coating device has the following advantages and effects that double-sided simultaneous coating can be realized, and the coating uniformity and the coating quality can be improved.

Description

Technical Field

[0001] This application relates to the technical field of metallized paper production equipment, and in particular to a coating device for metallized paper production. Background Technology

[0002] Metallized paper is mainly composed of base paper, an aluminum layer, and a coating. Due to its good gloss and smoothness, good flexibility, high aluminum coating adhesion, and aesthetic appeal, it is environmentally friendly and has excellent printability and machinability. Therefore, it is widely used for the exquisite packaging of products such as cigarettes, alcohol, bottle labels, tea, food, cosmetics, daily chemicals, department store items, gifts, and handicrafts, and can also be used in building decoration materials. During the production and processing of metallized paper, the surface of the metallized paper substrate needs to be coated.

[0003] A search revealed a patent document with authorization announcement number CN222313664U, which discloses a coating device for aluminum paper production. The device includes a support frame, a second coating roller rotatably mounted on the support frame above a first coating liquid container, and a third coating roller rotatably mounted inside the second coating liquid container. This allows for simultaneous processing of both sides of the paper without secondary processing, significantly reducing production time and improving efficiency. Connecting rods are provided on both sides of the moving block and slidably connected to the bottom of the mounting frame. A pressure roller rotatably mounts between the two sets of connecting rods, allowing for precise tension adjustment of the aluminum-coated paper. This improves winding efficiency and reduces paper damage or wrinkling caused by uneven tension during winding. Multiple sets of paddles are provided on the outer wall of the rotating rod, and a tapping rod is provided between the two sets of first support plates to remove residual debris from the paper surface, ensuring no debris or pigment contamination during coating and significantly improving the coating quality.

[0004] While the aforementioned solutions can meet the basic requirement of simultaneous double-sided coating of aluminized paper substrates, at least the following shortcomings have been found in actual use: Due to the different sizes and rotation speeds of the first, second, and third coating rollers, the linear speeds of these three coating rollers will be different. This difference in linear speed will result in different amounts of coating liquid transferred to the two sides of the aluminized paper substrate. The side with the faster linear speed will have relatively more coating liquid transferred, which may result in a larger coating thickness, while the side with the slower linear speed will have a smaller coating thickness, causing inconsistent coating thickness and reducing coating quality.

[0005] Therefore, we propose a coating apparatus for the production of aluminized paper to solve the above problems. Utility Model Content

[0006] The purpose of this application is to provide a coating apparatus for the production of metallized paper, which has the effect of simultaneously coating both sides and improving coating uniformity and coating quality.

[0007] The above-mentioned technical objective of this application is achieved through the following technical solution: a coating device for producing aluminized paper, comprising a coating machine body, wherein coating roller 1, coating roller 2, and coating roller 3 are rotatably mounted inside the coating machine body, the diameter and length of coating roller 1, coating roller 2, and coating roller 3 are the same, coating roller 2 is located directly below coating roller 1, coating roller 3 is located directly to the right of coating roller 1, and coating roller 3 is in contact with coating roller 1, and coating liquid container 1 and coating liquid container 2 are fixedly mounted inside the coating machine body, coating liquid container 1 is located directly below coating roller 2, the bottom of coating roller 2 extends into coating liquid container 1, and coating liquid container 2 is located directly below coating roller 3, the bottom of coating roller 3 extends into coating liquid container 2, and a drive mechanism is provided on the coating machine body, the drive mechanism being used to control coating roller 1, coating roller 2, and coating roller 3 to rotate simultaneously at the same speed.

[0008] A further configuration of this application is as follows: the driving mechanism includes two motors and two gears. Both motors are fixedly mounted on the front outer wall of the coating machine body. The output shaft ends of the two motors are respectively fixedly connected to the front end of coating roller one and the front end of coating roller two. The rear ends of coating roller one and coating roller three extend out of the coating machine body. The two gears are respectively fixedly fitted on the rear ends of coating roller one and coating roller three, and the two gears mesh with each other.

[0009] A further configuration of this application is: the two motors are of the same model and rotate in opposite directions, and the two gears are of the same diameter.

[0010] A further provision of this application is that: a liquid storage tank is fixedly installed on the top of the coating machine body, the liquid storage tank is used to store the coating liquid for the production of aluminized paper, and a first infusion pipe and a second infusion pipe are fixedly installed on the bottom of the liquid storage tank. The bottom end of the first infusion pipe extends into the first coating liquid container, and the bottom end of the second infusion pipe extends into the second coating liquid container. Electromagnetic drain valves are fixedly installed on both the first infusion pipe and the second infusion pipe.

[0011] A further configuration of this application is: the first infusion tube is located to the left rear of the first coating roller, and the second infusion tube is located to the right rear of the third coating roller.

[0012] A further feature of this application is that the top of the liquid storage tank is provided with a liquid filling hole, and a plug is installed in the internal thread of the liquid filling hole.

[0013] A further provision of this application is that a plurality of lower wiping rollers and a plurality of upper wiping rollers are rotatably mounted inside the coating machine body, with the plurality of lower wiping rollers located directly below their respective upper wiping rollers.

[0014] A further feature of this application is that a coating liquid collection box is placed on the bottom inner wall of the coating machine body, and the coating liquid collection box is located below the lower wiping roller.

[0015] A further feature of this application is that a horizontal plate located to the right of the upper wiping roller is fixedly installed inside the coating machine body, and the number of horizontal plates is set to two. Multiple baking lamps are fixedly installed on the side of the two horizontal plates that are close to each other.

[0016] A further feature of this application is that a guide roller located on the right side of the horizontal plate is rotatably mounted inside the coating machine body, and the number of guide rollers is set to two.

[0017] This application includes at least one of the following beneficial technical effects:

[0018] 1. This application, through the synergistic action of the drive mechanism and coating rollers one, two, and three with the same diameter and length, can ensure that the linear speeds of coating rollers one, two, and three are the same, thereby ensuring that the coating liquid is evenly applied to the upper and lower surfaces of the aluminized paper substrate, improving coating uniformity, and reducing product defects caused by uneven coating.

[0019] 2. This application utilizes the synergistic effect of multiple lower and upper sizing rollers to perform secondary sizing of the coating liquid applied to the upper and lower surfaces of the aluminized paper substrate, thereby further improving the coating uniformity and coating quality.

[0020] 3. This application utilizes the synergistic effect of multiple baking lamps to rapidly and thoroughly heat and dry the coated and evenly spread aluminized paper substrate, ensuring uniform heating of both the upper and lower surfaces of the aluminized paper substrate, accelerating the drying and solidification speed of the coating liquid, and improving production efficiency.

[0021] 4. This application facilitates the replenishment of coating liquid into coating liquid container 1 and coating liquid container 2 through the coordinated use of the storage tank, infusion tube 1, infusion tube 2 and electromagnetic drain valve. When the coating liquid in coating liquid container 1 and coating liquid container 2 is insufficient, the two electromagnetic drain valves can be opened in time to replenish it. At the same time, they can be closed when no replenishment is needed to avoid waste of coating liquid. Attached Figure Description

[0022] Figure 1 This is a front-view stereoscopic structural diagram of this embodiment.

[0023] Figure 2 This is a schematic diagram of the left-side stereoscopic structure of this embodiment.

[0024] Figure 3 This is a rear-view stereoscopic structural diagram of this embodiment.

[0025] Figure 4 This is a front view sectional three-dimensional structural schematic diagram of this embodiment.

[0026] In the diagram, 1. Coating machine body; 2. Coating roller one; 3. Coating roller two; 4. Coating roller three; 5. Coating liquid container one; 6. Coating liquid container two; 7. Motor; 8. Gear; 9. Storage tank; 10. Infusion pipe one; 11. Infusion pipe two; 12. Electromagnetic drain valve; 13. Stopcock; 14. Lower wiping roller; 15. Upper wiping roller; 16. Coating liquid collection box; 17. Horizontal plate; 18. Baking lamp; 19. Guide roller. Detailed Implementation

[0027] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This application provides a coating apparatus for producing metallized paper, including a coating machine body 1. Coating roller 1 2, coating roller 2 3, and coating roller 3 4 are rotatably mounted inside the coating machine body 1. The diameter and length of coating rollers 1 2, 2 3, and 3 4 are identical. Coating roller 2 3 is located directly below coating roller 1 2, and coating roller 3 4 is located directly to the right of coating roller 1 2, in contact with coating roller 1 2. Coating liquid container 1 5 and coating liquid container 2 6 are fixedly installed inside the coating machine body 1. Coating liquid container 1 5 is located directly below coating roller 2 3, and the bottom of coating roller 2 3 extends to the coating liquid container. Inside coating roller 2, coating liquid container 2 is located directly below coating roller 3. The bottom of coating roller 3 extends into coating liquid container 2. Both coating liquid container 2 and coating liquid container 2 are used to hold coating liquid. The design of coating roller 3 and coating roller 2 ensures that the coating liquid in coating liquid container 2 is evenly transferred from coating roller 3 to the surface of coating roller 2. Coating roller 2 can be used to apply coating liquid to the upper surface of the metallized paper substrate, and coating roller 2 can be used to apply coating liquid in coating liquid container 2 to the lower surface of the metallized paper substrate, thereby achieving simultaneous double-sided coating and greatly improving coating efficiency.

[0029] In this embodiment, a drive mechanism is provided on the coating machine body 1. The drive mechanism is used to control the simultaneous rotation of coating roller 1 2, coating roller 2 3, and coating roller 3 4 at the same speed. The drive mechanism includes two motors 7 and two gears 8. The two motors 7 are fixedly installed on the front outer wall of the coating machine body 1. The output shaft ends of the two motors 7 are fixedly connected to the front end of coating roller 1 2 and the front end of coating roller 2 3, respectively. The rear ends of coating roller 1 2 and coating roller 3 4 extend outside the coating machine body 1. The two gears 8 are fixedly fitted on the rear ends of coating roller 1 2 and coating roller 3 4, respectively. The two gears 8 mesh with each other. The two motors 7 are of the same model and rotate in opposite directions. The two gears 8 are of the same diameter. By utilizing the two motors of the same model... The motor 7, operating in opposite directions, controls the simultaneous rotation of coating roller 2 and coating roller 3, ensuring that their directions of rotation are opposite. Through the meshing transmission of two gears 8, the simultaneous rotation of coating roller 2 and coating roller 3, again ensuring their opposite directions of rotation, is achieved. This ensures that the rotational speeds of coating rollers 2, 3, and 4 are the same. Furthermore, by ensuring that the diameter and length of coating rollers 2, 3, and 4 are identical, their linear velocities are also identical. This ensures that the coating liquid is evenly distributed on the surface of the aluminized paper substrate, improving coating uniformity and reducing product defects caused by uneven coating.

[0030] In this embodiment, a liquid storage tank 9 is fixedly installed on the top of the coating machine body 1. The liquid storage tank 9 is used to store the coating liquid for the production of aluminized paper. A first infusion pipe 10 and a second infusion pipe 11 are fixedly installed on the bottom of the liquid storage tank 9. The bottom end of the first infusion pipe 10 extends into the first coating liquid container 5, and the bottom end of the second infusion pipe 11 extends into the second coating liquid container 6. Electromagnetic drain valves 12 are fixedly installed on both the first infusion pipe 10 and the second infusion pipe 11. This design facilitates the replenishment of coating liquid into the first coating liquid container 5 and the second coating liquid container 6. When the coating liquid in the first coating liquid container 5 and the second coating liquid container 6 is insufficient, the two electromagnetic drain valves 12 can be opened in time to replenish it. At the same time, they can be closed when no replenishment is needed to avoid waste of coating liquid.

[0031] In this embodiment, the first infusion tube 10 is located to the left rear of the first coating roller 2, and the second infusion tube 11 is located to the right rear of the third coating roller 4. This ensures that the first coating roller 2, the second coating roller 3, and the third coating roller 4 will not come into contact with the first infusion tube 10 and the second infusion tube 11 during rotation. The top of the liquid storage tank 9 is provided with a liquid filling hole, and a stopcock 13 is installed in the threaded part of the liquid filling hole to facilitate the addition of coating liquid to the liquid storage tank 9.

[0032] In this embodiment, multiple lower sizing rollers 14 and multiple upper sizing rollers 15 are rotatably installed inside the coating machine body 1. The multiple lower sizing rollers 14 are respectively located directly below the corresponding upper sizing rollers 15. By using the multiple lower sizing rollers 14 and multiple upper sizing rollers 15 in coordination, the coating liquid applied to the upper and lower surfaces of the aluminized paper substrate can be smeared evenly a second time, thereby further improving the coating uniformity and coating quality.

[0033] In this embodiment, a coating liquid collection box 16 is placed on the bottom inner wall of the coating machine body 1. The coating liquid collection box 16 is located below the lower spreading roller 14. The setting of the coating liquid collection box 16 can effectively collect the coating liquid dripping from the aluminized paper substrate during the coating process, realize the recycling and reuse of the coating liquid, reduce production costs, and at the same time keep the production environment clean and reduce the risk of corrosion to the equipment.

[0034] In this embodiment, a horizontal plate 17 located to the right of the upper spreading roller 15 is fixedly installed inside the coating machine body 1. The number of horizontal plates 17 is set to two. Multiple baking lamps 18 are fixedly installed on the side of the two horizontal plates 17 that are close to each other. The heat generated by the multiple baking lamps 18 when they are powered on can fully heat and dry the metallized paper substrate that has been coated and spread. The even distribution of multiple baking lamps 18 can ensure that the upper and lower surfaces of the metallized paper substrate are heated evenly, accelerate the drying and solidification speed of the coating liquid, and improve production efficiency. It should be noted that the baking lamps 18 can be commercially available infrared baking lamps.

[0035] In this embodiment, a guide roller 19 located on the right side of the horizontal plate 17 is rotatably installed inside the coating machine body 1. The number of guide rollers 19 is set to two. The coordinated use of the two guide rollers 19 facilitates the guiding and conveying of the dried aluminized paper substrate, so that the aluminized paper substrate can smoothly enter the subsequent processing stage, ensuring the continuity of the entire production process, avoiding the aluminized paper substrate from deflection, jamming and other phenomena during the conveying process, and helping to improve the stability of production.

[0036] In this embodiment, it should be noted that the wiring connection method and control method of the motor 7, the electromagnetic drain valve 12 and the baking lamp 18 are all mature technologies in the field and have been fully disclosed, so they will not be described again in this article.

[0037] With the above structure, when the coating device for producing aluminized paper provided in this application is in use, opening the two electromagnetic drain valves 12 allows the coating liquid in the storage tank 9 to flow into the coating liquid container 5 and the coating liquid container 6 respectively through the first infusion pipe 10 and the second infusion pipe 11. When the coating liquid container 5 and the coating liquid container 6 contain an appropriate amount of coating liquid (the bottom of the coating roller 3 is immersed in the coating liquid in the coating liquid container 5, and the bottom of the coating roller 4 is immersed in the coating liquid in the coating liquid container 6), closing the two electromagnetic drain valves 12 allows the coating liquid to be replenished into the coating liquid container 5 and the coating liquid container 6 as needed.

[0038] During the coating process, one end of the aluminized paper substrate is first passed between coating roller 1 2 and coating roller 2 3, so that coating roller 1 2 and coating roller 2 3 contact the upper and lower surfaces of the aluminized paper substrate, respectively. Then it passes between multiple upper sizing rollers 15 and multiple lower sizing rollers 14, so that multiple upper sizing rollers 15 contact the upper surface of the aluminized paper substrate and multiple lower sizing rollers 14 contact the lower surface of the aluminized paper substrate. Then it passes between two horizontal plates 17 and then between two guide rollers 19.

[0039] Next, the two motors 7 are started. The output shafts of the two motors 7 drive the coating roller 1 (2) and coating roller 2 (3) to rotate respectively. Under the meshing transmission of the two gears 8, coating roller 1 (2) and coating roller 3 (3) can rotate simultaneously, thus achieving simultaneous rotation of coating roller 1 (2), coating roller 2 (3), and coating roller 3 (4) at the same linear speed. By utilizing the rotation of coating roller 3 (4) and its contact with coating roller 2 (3), the coating liquid in the coating liquid container 2 (6) can be evenly transferred from coating roller 3 (4) to the surface of coating roller 1 (2). As the metallized paper substrate continuously passes between coating roller 1 (2) and coating roller 2 (3), the coating rollers... Coating roller 12 can apply the coating liquid in coating liquid container 26 to the upper surface of the aluminized paper substrate, and coating roller 23 can apply the coating liquid in coating liquid container 15 to the lower surface of the aluminized paper substrate, thereby achieving simultaneous double-sided coating, which greatly improves coating efficiency. Moreover, by using coating roller 12, coating roller 23 and coating roller 34 with the same diameter and length, and the same linear speed, it can be ensured that the coating liquid is evenly distributed on the upper and lower surfaces of the aluminized paper substrate, improving coating uniformity and reducing product defects caused by uneven coating.

[0040] Subsequently, as the aluminized paper substrate coated with coating liquid continuously passes between multiple lower wiping rollers 14 and multiple upper wiping rollers 15, the two work together to perform a secondary wiping of the coating liquid applied to the upper and lower surfaces of the aluminized paper substrate, further improving the coating uniformity and quality. During this process, the coating liquid collection box 16 can be used to collect the coating liquid dripping from the aluminized paper substrate during the coating process, so as to facilitate subsequent recycling and reuse, reduce costs, keep the production environment clean, and reduce the risk of equipment corrosion.

[0041] Then, as the aluminized paper substrate, which has been coated and spread evenly with the coating liquid after the second coating, passes between the two horizontal plates 17, the heat generated by the multiple baking lamps 18 can quickly and fully heat and dry the coated and spread aluminized paper substrate. Under the condition that the multiple baking lamps 18 are evenly distributed, it can ensure that the upper and lower surfaces of the aluminized paper substrate are heated evenly, accelerate the drying and solidification speed of the coating liquid, and improve production efficiency.

[0042] After drying, the aluminized paper substrate is finally guided out between two guide rollers 19, so that it can smoothly enter the subsequent processing stage, ensuring the continuity of the production process and avoiding deviations or jams during the conveying process.

Claims

1. A coating apparatus for producing aluminized paper, characterized in that, The coating machine includes a coating body (1), within which coating roller 1 (2), coating roller 2 (3), and coating roller 3 (4) are rotatably mounted. The diameter and length of coating roller 1 (2), coating roller 2 (3), and coating roller 3 (4) are identical. Coating roller 2 (3) is located directly below coating roller 1 (2), and coating roller 3 (4) is located directly to the right of coating roller 1 (2). Coating roller 3 (4) is in contact with coating roller 1 (2). A coating liquid container 1 is fixedly installed inside the coating machine body (1). 5) and coating liquid container 2 (6), the coating liquid container 1 (5) is located directly below the coating roller 2 (3), the bottom of the coating roller 2 (3) extends into the coating liquid container 1 (5), the coating liquid container 2 (6) is located directly below the coating roller 3 (4), the bottom of the coating roller 3 (4) extends into the coating liquid container 2 (6), the coating machine body (1) is provided with a drive mechanism, the drive mechanism is used to control the coating roller 1 (2), coating roller 2 (3) and coating roller 3 (4) to rotate at the same speed.

2. The coating apparatus for producing aluminized paper according to claim 1, characterized in that: The drive mechanism includes two motors (7) and two gears (8). The two motors (7) are fixedly installed on the front outer wall of the coating machine body (1). The output shaft ends of the two motors (7) are fixedly connected to the front end of the first coating roller (2) and the front end of the second coating roller (3), respectively. The rear end of the first coating roller (2) and the rear end of the third coating roller (4) extend to the outside of the coating machine body (1). The two gears (8) are fixedly fitted on the rear end of the first coating roller (2) and the rear end of the third coating roller (4), respectively, and the two gears (8) mesh with each other.

3. The coating apparatus for producing aluminized paper according to claim 2, characterized in that: The two motors (7) are of the same model and rotate in opposite directions, and the two gears (8) are of the same diameter.

4. The coating apparatus for producing aluminized paper according to claim 1, characterized in that: A liquid storage tank (9) is fixedly installed on the top of the coating machine body (1). The liquid storage tank (9) is used to store the coating liquid for the production of aluminized paper. A first infusion tube (10) and a second infusion tube (11) are fixedly installed on the bottom of the liquid storage tank (9). The bottom end of the first infusion tube (10) extends into the first coating liquid container (5), and the bottom end of the second infusion tube (11) extends into the second coating liquid container (6). Electromagnetic drain valves (12) are fixedly installed on both the first infusion tube (10) and the second infusion tube (11).

5. The coating apparatus for producing aluminized paper according to claim 4, characterized in that: The first infusion tube (10) is located to the left rear of the first coating roller (2), and the second infusion tube (11) is located to the right rear of the third coating roller (4).

6. The coating apparatus for producing aluminized paper according to claim 4, characterized in that: The top of the liquid storage tank (9) is provided with a liquid filling hole, and a plug (13) is installed in the internal thread of the liquid filling hole.

7. The coating apparatus for producing aluminized paper according to claim 1, characterized in that: The coating machine body (1) is rotatably equipped with a plurality of lower wiping rollers (14) and a plurality of upper wiping rollers (15), with the plurality of lower wiping rollers (14) located directly below the corresponding upper wiping rollers (15).

8. The coating apparatus for producing aluminized paper according to claim 7, characterized in that: A coating liquid collection box (16) is placed on the bottom inner wall of the coating machine body (1), and the coating liquid collection box (16) is located below the lower wiping roller (14).

9. The coating apparatus for producing aluminized paper according to claim 7, characterized in that: The coating machine body (1) is fixedly installed with a horizontal plate (17) located on the right side of the upper wiping roller (15). The number of the horizontal plates (17) is set to two. On the side of the two horizontal plates (17) that are close to each other, a number of baking lamps (18) are fixedly installed in a uniformly distributed manner.

10. The coating apparatus for producing aluminized paper according to claim 9, characterized in that: The coating machine body (1) is rotatably installed with a guide roller (19) located on the right side of the horizontal plate (17), and the number of the guide roller (19) is set to two.

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