Vacuum aluminum plating device for improving brightness of aluminum film

Abstract

The utility model discloses a vacuum aluminizing device for improving the brightness of an aluminum film, which comprises an aluminizing equipment body, a film releasing roller and a film collecting roller are arranged in the aluminizing equipment body, a first guide roller is arranged below the film releasing roller, a second guide roller is arranged below the film collecting roller, and two groups of tension adjusting devices are also arranged in the aluminizing equipment body. An aluminum plating roller is arranged between the first guide roller and the second guide roller, an aluminum evaporation assembly is arranged below the aluminum plating roller, a cooling assembly is arranged between the aluminum plating roller and the second guide roller, and a blowing assembly is arranged on the outer side of the second guide roller; two adjusting rollers are symmetrically arranged on the outer surface of the rotating disc; when the vacuum aluminum plating device for improving the brightness of the aluminum film is used, the tension of a film base material can be adjusted, the film base material is prevented from loosening or wrinkling to influence the brightness of a plating layer, the plating layer of the aluminum plating film can be quickly cooled and solidified, subsequent winding is facilitated, and the vacuum aluminum plating device is suitable for popularization and application.

Description

Technical Field

[0001] This utility model relates to the field of aluminum coating production technology, and in particular to a vacuum aluminum coating device for improving the brightness of aluminum films. Background Technology

[0002] Metallized film is produced by depositing a thin layer of aluminum atoms onto a PET film using a vacuum aluminum plating process, forming a barrier film. Metallized film has a bright metallic luster and can achieve moisture resistance, heat resistance, and puncture resistance, and can be used as a substitute for aluminum foil.

[0003] Traditional vacuum metallization equipment typically includes an unwinding mechanism, a winding mechanism, an aluminum evaporation assembly, and a wire feeding mechanism. In use, the thin film substrate to be coated is mounted on the unwinding station of the vacuum evaporation unit. The film is then passed through a cooling roller and wound onto the winding station. A vacuum pump is used to create a vacuum and heat the evaporation boat, causing the high-purity aluminum wire to melt and evaporate into gaseous aluminum at a temperature of 1300-1400℃. The baffle is then opened to allow the gaseous aluminum particles to adhere to the surface of the film substrate and precipitate.

[0004] However, traditional vacuum metallization equipment cannot adjust the tension of the thin film substrate during use, which is not conducive to ensuring the brightness of the metallized layer; in addition, the outer layer of the aluminum plating process cannot be cooled and solidified in time, which is not conducive to the subsequent winding of the metallized film, resulting in unsatisfactory performance. Utility Model Content

[0005] The purpose of this invention is to solve the above-mentioned problems by providing a vacuum aluminum plating device that can adjust the tension of the thin film substrate, prevent the thin film substrate from loosening or wrinkling and affecting the brightness of the coating, and enable the aluminum coating to cool and solidify quickly, facilitating subsequent winding, thereby improving the brightness of the aluminum film.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a vacuum aluminum plating device for improving the brightness of aluminum film, comprising an aluminum plating equipment body, wherein an feeding roller and a receiving roller are provided inside the aluminum plating equipment body, a first guide roller is provided below the feeding roller, a second guide roller is provided below the receiving roller, and two sets of tension adjustment devices are also provided inside the aluminum plating equipment body, the two sets of tension adjustment devices are respectively provided above the first guide roller and the second guide roller, an aluminum plating roller is provided between the first guide roller and the second guide roller, an aluminum evaporation component is provided below the aluminum plating roller, a cooling component is provided between the aluminum plating roller and the second guide roller, and a spraying component is provided on the outside of the second guide roller.

[0007] Preferably, the tension adjustment device includes a rotating disk, and two adjusting rollers are symmetrically arranged on the outer surface of the rotating disk, with the spindle of the adjusting rollers fixedly connected to the rotating disk.

[0008] Preferably, the first guide roller and the second guide roller are at the same axial height, and the axis of the aluminized roller is located below the first guide roller and the second guide roller.

[0009] Preferably, the aluminum evaporation assembly is further provided with a zinc evaporation assembly on the side near the second guide roller, and both the aluminum evaporation assembly and the zinc evaporation assembly are provided with plating nozzles.

[0010] Preferably, the cooling assembly includes an outer shell fixed inside the aluminum plating equipment body, and a cooling pipe is provided inside the outer shell. The cooling pipe is arranged in a U-shape and the outer wall of the cooling pipe is always in contact with the back of the aluminum plating film.

[0011] Preferably, the blowing assembly includes a rectangular frame, a semi-circular cavity on one side near the second guide roller, blowing holes arrayed in the middle of the semi-circular cavity, and a blowing pipe inside the rectangular frame, the blowing pipe corresponding one-to-one with the blowing holes through a pipe.

[0012] Preferably, the semi-circular cavity is further provided with two rows of adsorption nozzles, the blowing hole is located between the two rows of adsorption nozzles, the ends of the adsorption nozzles are inclined towards each other, and the adsorption nozzles are connected to the internal suction pipe.

[0013] This utility model discloses a vacuum aluminum plating apparatus for improving the brightness of aluminum films. It includes an aluminum plating equipment body, inside which are a film feeding roller and a film taking-up roller. A first guide roller is located below the film feeding roller, and a second guide roller is located below the film taking-up roller. The apparatus also includes two sets of tension adjustment devices. An aluminum plating roller is located between the first and second guide rollers. An aluminum evaporation component is located below the aluminum plating roller. A cooling component is located between the aluminum plating roller and the second guide roller. A blowing component is located outside the second guide roller. The tension adjustment device includes a rotating disk, and two symmetrically arranged adjustment rollers are located on the outer surface of the rotating disk. Compared with the prior art, this vacuum aluminum plating apparatus for improving the brightness of aluminum films has the advantages of being able to adjust the tension of the film substrate during use, preventing the film substrate from becoming loose or wrinkled and affecting the brightness of the coating, and allowing the aluminum coating to cool and solidify quickly, facilitating subsequent winding. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a vacuum aluminum plating device for improving the brightness of aluminum films according to this utility model. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the structure of a vacuum aluminum plating device for improving the brightness of aluminum films according to this utility model. Figure 2 .

[0016] Figure 3This is a schematic diagram of the blowing component in a vacuum aluminum plating device for improving the brightness of aluminum film according to this utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the spraying component and the aluminum coating in a vacuum aluminum plating device for improving the brightness of aluminum film according to this utility model.

[0018] Figure 5 This is a schematic diagram of the coating of this utility model. Figure 1 .

[0019] Figure 6 This is a schematic diagram of the coating of this utility model. Figure 2 .

[0020] In the diagram: 1. Aluminum plating equipment body; 2. Film feeding roller; 3. Film receiving roller; 4. Rotating disk; 5. Adjusting roller; 6. First guide roller; 7. Aluminum plating roller; 8. Aluminum evaporation assembly; 9. Zinc evaporation assembly; 10. Spray plating nozzle; 11. Second guide roller; 13. Cooling pipe; 14. Spraying assembly; 141. Semi-circular cavity; 142. Spraying hole; 143. Adsorption nozzle; 144. Spraying pipe; 145. Extraction pipe. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] Please refer to Figure 1-6 A vacuum aluminum plating apparatus for improving the brightness of aluminum film includes an aluminum plating equipment body 1. The aluminum plating equipment body 1 has a film feeding roller 2 and a film taking roller 3 inside, both driven synchronously by stepper motors. The film substrate to be aluminum-plated is placed on the film feeding roller 2, and the aluminum-plated film is wound onto the film taking roller 3. A first guide roller 6 is located below the film feeding roller 2, and a second guide roller 11 is located below the film taking roller 3. The aluminum plating equipment body 1 also has two sets of tension adjustment devices for adjusting the tension of the film substrate to ensure uniform plating. The two sets of tension adjustment devices are respectively located above the first guide roller 6 and the second guide roller 11. An aluminum plating roller 7 is located between the first guide roller 6 and the second guide roller 11. An aluminum evaporation component 8 is located below the aluminum plating roller 7. A cooling component is located between the aluminum plating roller 7 and the second guide roller 11. A blowing component 14 is located on the outside of the second guide roller 11.

[0023] In this embodiment, the aluminum evaporation assembly 8 is in a vacuum environment. During use, a vacuum pump is used to evacuate the vacuum, so that the vacuum degree of the internal evaporation chamber reaches 4×10⁻⁶. -2Above Pa, the evaporation boat is heated to melt the aluminum wire and evaporate it into gaseous aluminum; then the film feeding roller 2 is started to feed the film, and the baffle is opened to allow the gaseous aluminum particles to precipitate on the surface of the moving film substrate. After precipitation, the film passes through the cooling component and the blowing component 14 to form a continuous and bright metallic aluminum layer; after coating, an aluminum coating is formed and it is wound on the film taking roller 3.

[0024] Understandably, the aluminum evaporation unit 8 also includes an aluminum wire feeding mechanism, a heating mechanism, etc., which will not be elaborated on here.

[0025] The tension adjustment device includes a rotating disk 4, and two symmetrically arranged adjusting rollers 5 are provided on the outer surface of the rotating disk 4. The spindle of the adjusting roller 5 is fixedly connected to the rotating disk 4, and the adjusting roller 5 rotates through the spindle to facilitate the rotation of the film substrate or aluminized film.

[0026] In addition, the first guide roller 6 and the second guide roller 11 are at the same axial height, and the axis of the aluminum plating roller 7 is located below the first guide roller 6 and the second guide roller 11; thus, the film substrate is stretched taut as it passes through, avoiding loosening and wrinkling of the film substrate, which is beneficial to improving the brightness of the aluminum film and improving the aluminum plating quality.

[0027] Please refer to this again. Figure 5 When the two adjusting rollers 5 are at the same height, the tension of the film substrate (or aluminum coating) is at its maximum, ensuring the film substrate remains taut during coating, which is beneficial for the adhesion of gaseous aluminum particles; such as Figure 6 As shown, when the rotating disk 4 rotates synchronously at a certain angle, the two adjusting rollers 5 are staggered vertically to reduce tension and prevent the substrate from being overly taut. In other words, by rotating the disk and adjusting the position of the two adjusting rollers 5, the tension of the film substrate can be adjusted in real time, which is beneficial to improving the coating effect and increasing the brightness of the aluminum film.

[0028] In this embodiment, the aluminum evaporation assembly 8 is further provided with a zinc evaporation assembly 9 on the side near the second guide roller 11. Both the aluminum evaporation assembly 8 and the zinc evaporation assembly 9 are provided with plating nozzles 10. After aluminum plating is completed, zinc plating is performed through the zinc evaporation assembly, and the principle is the same as that of the aluminum evaporation assembly. Plating zinc after aluminum plating can improve the corrosion resistance of the aluminum film, thereby protecting the aluminum film. In addition, the zinc plating layer can improve the adhesion of the aluminum film to other materials. For example, when performing subsequent coating bonding processes, the zinc plating layer can provide a better substrate to ensure the firmness of the coating or adhesive layer.

[0029] In this embodiment, the cooling assembly includes an outer shell fixed inside the aluminum plating equipment body 1. A cooling pipe 13 is provided inside the outer shell. The cooling pipe 13 is arranged in a U-shape and the outer wall of the cooling pipe 13 is always in contact with the back side of the aluminum plating film. Cooling water flows inside the cooling pipe 13. Since the outer wall of the cooling pipe 13 is always in contact with the back side of the aluminum plating film, the film can be cooled and cooled without contacting the aluminum plating film (plating surface). This can accelerate the cooling and solidification of the aluminum plating layer and the zinc plating layer and protect the integrity of the plating layer.

[0030] As a preferred embodiment, the blowing assembly 14 includes a rectangular frame. A semi-circular cavity 141 is provided on one side of the rectangular frame near the second guide roller 11. Blowing holes 142 are arrayed in the middle of the semi-circular cavity 141. A blowing pipe 144 is provided inside the rectangular frame, and the blowing pipe 144 corresponds one-to-one with the blowing holes 142 via pipes. When air is injected into the blowing pipe through an external air pump, the air is blown towards the coating at the blowing holes 142, further accelerating the cooling and solidification of the coating. This is beneficial for subsequent winding and prevents the coating from sticking after winding. Two rows of suction nozzles 143 are also provided inside the semi-circular cavity 141. The blowing holes 142 are located between the two rows of suction nozzles 143. The ends of the suction nozzles 143 are inclined towards each other, and the suction nozzles 143 are connected to an internal extraction pipe 145. During use, the extraction pipe 145 draws in internal air through an external extraction pump, ensuring internal air circulation and accelerating the cooling and solidification of the coating.

[0031] The tension of the thin film substrate is adjusted by a rotating disk and adjusting rollers to prevent the substrate from loosening and wrinkling, ensuring uniform coating and improving coating brightness. At the same time, the aluminum-coated film becomes more stable after passing through the cooling and blowing components, preventing the aluminum coating layers from sticking together, facilitating subsequent winding, and making it highly practical.

[0032] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A vacuum aluminum plating apparatus for improving the brightness of aluminum films, characterized in that, The device includes an aluminum plating equipment body, which contains a film feeding roller and a film receiving roller. A first guide roller is located below the film feeding roller, and a second guide roller is located below the film receiving roller. The aluminum plating equipment body also contains two sets of tension adjustment devices, which are respectively located above the first guide roller and the second guide roller. An aluminum plating roller is located between the first guide roller and the second guide roller. An aluminum evaporation component is located below the aluminum plating roller. A cooling component is located between the aluminum plating roller and the second guide roller. A blowing component is located on the outside of the second guide roller. The tension adjustment device includes a rotating disk, and two symmetrically arranged adjusting rollers are provided on the outer surface of the rotating disk. The spindle of the adjusting roller is fixedly connected to the rotating disk.

2. The vacuum aluminum plating apparatus for improving the brightness of aluminum film according to claim 1, characterized in that, The first guide roller and the second guide roller have the same axial height, and the axis of the aluminum-plated roller is located below the first guide roller and the second guide roller.

3. The vacuum aluminum plating apparatus for improving the brightness of aluminum films according to claim 1 or 2, characterized in that, The aluminum evaporation assembly also has a zinc evaporation assembly on the side near the second guide roller, and both the aluminum evaporation assembly and the zinc evaporation assembly are equipped with plating nozzles.

4. The vacuum aluminum plating apparatus for improving the brightness of aluminum film according to claim 1, characterized in that, The cooling assembly includes an outer shell fixed inside the aluminum plating equipment body, and a cooling pipe is provided inside the outer shell. The cooling pipe is arranged in a U-shape and the outer wall of the cooling pipe is always in contact with the back of the aluminum plating film.

5. The vacuum aluminum plating apparatus for improving the brightness of aluminum film according to claim 1, characterized in that, The blowing assembly includes a rectangular frame with a semi-circular cavity on one side near the second guide roller. Blow holes are arranged in an array in the middle of the semi-circular cavity. A blow pipe is provided inside the rectangular frame, and the blow pipe corresponds to the blow holes one by one through a pipe.

6. The vacuum aluminum plating apparatus for improving the brightness of aluminum film according to claim 5, characterized in that, The semi-circular cavity is also provided with two rows of adsorption nozzles, and the blowing hole is located between the two rows of adsorption nozzles. The ends of the adsorption nozzles are inclined towards each other, and the adsorption nozzles are connected to the internal air extraction pipe.

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