Film covering device and film covering method

Abstract

The invention relates to a film laminating device and a film laminating method.The film laminating device comprises a rack unit, a carrier unit, a plurality of clamping guide units and a film sucking and laminating unit, the carrier unit is used for positioning products, each clamping guide unit comprises a translation driving device and a clamping guide part, each clamping guide part is provided with a clamping guide face, and the clamping guide faces are arranged on the translation driving device; the lower portion of the clamping guide face is used for abutting against the edge of a protruding film covering area of a product, the film sucking and covering unit comprises a film sucking and covering component, and the film sucking and covering component is used for sucking a protective film and gets close to the protruding film covering area of the product under guiding of the upper portion of the clamping guide face. By means of the film covering device and the film covering method, the protective film can be accurately attached to the protruding film covering area of the product in position.

Description

Technical Field

[0001] The present invention relates to the field of film coating technology, and in particular to a film coating device and a film coating method. Background Art

[0002] Notebook computers, also known as "portable computers, handheld computers, PDAs or laptop computers", are characterized by their compact body and are more convenient to carry than desktop computers. They are small and easy to carry personal computers. Laptop computers can be divided into several parts: display, body, keyboard and touch mouse in terms of appearance. During the assembly of the notebook, the touch mouse needs to be filmed. In the prior art, there are usually two ways of filming, one is manual filming and the other is automatic filming. When filming manually, it is difficult for the filming personnel to align the position of the protective film with the touch mouse, resulting in the displacement of the position of the protective film and the touch mouse. When filming automatically, the body of the notebook is first placed on a carrier for positioning, and then the protective film is pasted on the touch mouse of the body through a film suction and coating unit related to the position of the carrier. The relative position of the body and the touch mouse will have more or less errors, so it is also difficult to align the position of the film suction and coating unit with the touch mouse. How to improve the accuracy of the film coating position is a technical problem to be solved in this field. Summary of the invention

[0003] To this end, the present invention provides a laminating device and a laminating method for improving the accuracy of laminating position.

[0004] In order to solve the above technical problems, the present invention provides a coating device, comprising: Rack units; A carrier unit, the carrier unit is mounted on the frame unit, and the carrier unit is used to position the product so that the raised film-coating area of ​​the product faces upward; A plurality of clamping guide units, the plurality of clamping guide units are mounted on the frame unit and arranged around the raised coating area of ​​the product, each of the clamping guide units comprises a translation driving device and a clamping guide component, the translation driving device is used to drive the clamping guide component to translate along a direction close to the raised coating area of ​​the product, a clamping guide surface is provided on one side of the clamping guide component close to the raised coating area of ​​the product, and a lower portion of the clamping guide surface is used to abut against an edge of the raised coating area of ​​the product; The film absorbing and coating unit comprises a film absorbing and coating component, the film absorbing and coating component is used for absorbing the protective film, and the film absorbing and coating component is close to the raised coating area of ​​the product under the guidance of the upper part of the clamping guide surface.

[0005] Furthermore, the clamping guide surface is an inclined surface, and the inclined surface faces obliquely upward.

[0006] Furthermore, each of the clamping and guiding units includes one of the translation driving devices and a plurality of the clamping and guiding components, and different clamping and guiding components abut against different positions of the edge of the raised coating area of ​​the product.

[0007] Furthermore, the translation drive device is a cylinder, and each of the clamping guide units also includes a spring seat and a spring component, the spring component is arranged between the spring seat and the clamping guide component, and the elastic force of the spring component drives the clamping guide component to translate in a direction away from the raised coating area of ​​the product.

[0008] Furthermore, the rack unit includes a fixed bracket, a lifting drive device and a lifting bracket, the carrier unit is installed on the fixed bracket, the lifting drive device is installed on the fixed bracket and drives the lifting bracket to rise, the lifting bracket is arranged above the carrier unit and can move up and down, the lifting bracket is provided with a coating through hole, the coating through hole is located directly above the raised coating area of ​​the product, the multiple clamping guide units are installed on the lifting bracket and arranged around the coating through hole, and the clamping guide component is located in the coating through hole.

[0009] Furthermore, the lifting drive device is a cylinder.

[0010] Furthermore, the film absorbing and coating component is a handheld film absorbing and coating component.

[0011] Furthermore, the raised coating area of ​​the product is rectangular, and the plurality of clamping guide components respectively clamp four straight sides of the raised coating area of ​​the product.

[0012] The present invention also provides a coating method, using the coating device, the coating method comprises the following steps performed in sequence: S1. Place the product on the carrier unit, with the raised film-coated area of ​​the product facing upwards; S2, the translation driving device drives the clamping guide component to translate toward the direction close to the raised coating area of ​​the product, and the clamping guide surface clamps the edge of the raised coating area of ​​the product; S3, the film absorbing and coating component moves downward under the guidance of the clamping guide surface until the protective film is attached to the raised coating area of ​​the product; S4, the translation driving device drives the clamping guide component to translate in a direction away from the raised coating area of ​​the product, and the clamping guide component releases the edge of the raised coating area of ​​the product; S5. Take away the product on the carrier unit.

[0013] Furthermore, in step S1, the lifting bracket is first driven upward by the lifting drive device of the coating device described in claim 5 or 6, and then the product is placed on the carrier unit; in step S2, the lifting bracket is first driven downward by the lifting drive device of the coating device described in claim 5 or 6, and then the raised coating area of ​​the product is clamped by the clamping guide component; in step S5, the lifting bracket is first driven upward by the lifting drive device of the coating device described in claim 5 or 6, and then the product on the carrier unit is taken away.

[0014] The above technical solution of the present invention has the following advantages compared with the prior art: The film coating device and film coating method described in the present invention include a frame unit, a carrier unit, a plurality of clamping guide units and a film suction and coating unit, wherein the plurality of clamping guide components clamp the raised coating area of ​​the product, the relative position of the raised coating area and the clamping guide components is determined, and the clamping guide components guide the film suction and coating components to approach the raised coating area of ​​the product, so that the protective film can be accurately attached to the raised coating area of ​​the product; In the film coating device and film coating method of the present invention, the clamping guide surface is an inclined surface, which can better guide the film absorbing and coating component; 3) In the coating device and coating method described in the present invention, each clamping and guiding unit includes a translation driving device and a plurality of clamping and guiding components. The contact area between the clamping and guiding components and the convex coating area of ​​the product and the film absorbing and coating components is large, and the clamping and guiding effects are good; 4) In the coating device and coating method described in the present invention, the translation driving device is a cylinder, the cylinder drives the clamping guide component to approach the raised coating area, and the elastic force of the spring component drives the clamping guide component away from the raised coating area, and the driving cost is relatively low; 5) The laminating device and laminating method described in the present invention, the frame unit includes a fixed frame, a lifting drive device and a lifting bracket, and the clamping guide unit can be lifted and lowered relative to the carrier mechanism, so that the clamping guide unit can more easily clamp the raised laminating area of ​​the product; 6) In the coating device and coating method described in the present invention, the lifting drive device is a cylinder, and the cylinder drives the lifting bracket and the plurality of clamping guide units to rise, and the lifting bracket and the plurality of clamping guide units descend under the action of their own weight, and the driving cost is relatively low; 7) The film-covering device and the film-covering method described in the present invention, wherein the film-covering component is a handheld film-covering component, is suitable for small-scale film-covering work through manual film-covering. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0016] Figure 1is a schematic diagram of a coating device in the present invention; Figure 2 It is a schematic diagram of the connection between multiple clamping guide units and the lifting bracket in the present invention; Figure 3 It is a schematic diagram of assembling the slide rail, the slider, the clamping guide component, the spring seat and the spring component in the present invention; Figure 4 It is a partial exploded schematic diagram of the slide rail, the sliding block, the clamping guide component, the spring seat and the spring component in the present invention.

[0017] Description of the accompanying drawings: 1. Rack unit; 11. Fixed bracket; 12. Lifting drive device; 13. Lifting bracket; 131. Laminating through hole; 14. Guide column; 15. Guide sleeve; Carrier unit; 3. Clamping guide unit; 31. Translation drive device; 32. Clamping guide component; 321. Clamping guide surface; 33. Spring seat; 34. Spring component; 35. Slide rail; 36. Slider; 41. Film-absorbing and laminating components. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Embodiment 1

[0019] See also Figures 1 to 4 As shown, one embodiment of the coating device provided by the present invention.

[0020] The laminating device includes: Rack unit 1; A carrier unit 2, the carrier unit 2 is installed on the frame unit 1, and is used to position the product so that the raised film-coated area of ​​the product faces upward; A plurality of clamping guide units 3, the plurality of clamping guide units 3 are mounted on the frame unit 1 and arranged around the raised coating area of ​​the product, each of the clamping guide units 3 comprises a translation driving device 31 and a clamping guide component 32, the translation driving device 31 is used to drive the clamping guide component 32 to translate along a direction close to the raised coating area of ​​the product, a clamping guide surface 321 is provided on one side of the clamping guide component 32 close to the raised coating area of ​​the product, and a lower portion of the clamping guide surface 321 is used to clamp the edge of the raised coating area of ​​the product; The film suction and coating unit includes a film suction and coating component 41 , and the film suction and coating component 41 is used for adsorbing the protective film and the raised coating area close to the product under the guidance of the upper part of the clamping guide surface 321 .

[0021] The rack unit 1 serves as the installation base of the entire coating device. The carrier unit 2 has the function of supporting the product, and should also have a limiting function, that is, it can limit the horizontal movement of the product on the carrier unit 2, so as to facilitate the clamping guide component 32 to clamp the raised coating area of ​​the product. The clamping guide surface 321 is parallel to the edge of the raised coating area of ​​the product abutted, and the clamping guide surface 321 is parallel to the edge of the film-absorbing coating component abutted. The film-absorbing coating component 41 can absorb the unfolded protective film and keep the protective film in an unfolded state. Transferring the protective film by adsorption is not only relatively easy to achieve, but also will not cause damage to the protective film.

[0022] The laminating device includes a frame unit 1, a carrier unit 2, multiple clamping and guiding units 3 and a film suction and laminating unit. Multiple clamping and guiding components 32 clamp the raised laminating area of ​​the product. The relative position of the raised laminating area of ​​the product and the clamping and guiding components 32 is determined. The clamping and guiding components 32 guide the film suction and laminating components 41 to approach the raised laminating area of ​​the product, so that the protective film can be accurately attached to the raised laminating area of ​​the product.

[0023] In this embodiment, the clamping guide surface 321 is an inclined surface, and the inclined surface faces obliquely upward.

[0024] The above-mentioned inclined surfaces face obliquely upward, so the distance between the upper ends of the plurality of inclined surfaces is relatively large, which is larger than the size of the film-absorbing and coating component 41, so that the film-absorbing and coating component 41 can easily enter between the plurality of inclined surfaces. The distance between the lower ends of the plurality of inclined surfaces is relatively small, which just matches the size of the film-absorbing and coating component 41, and the film-absorbing and coating component can be accurately guided to the required position.

[0025] In this embodiment, each of the clamping and guiding units 3 includes one of the above-mentioned translation driving devices 31 and a plurality of the above-mentioned clamping and guiding components 32, and different clamping and guiding components 32 abut against different positions of the edge of the raised coating area of ​​the product.

[0026] Each clamping and guiding unit 3 includes a translation driving device 31 and a plurality of clamping and guiding components 32. The contact area between the clamping and guiding components 32 and the convex coating area of ​​the product and the film suction and coating component 41 is large, and the clamping and guiding effect is good. Specifically in this embodiment, each of the above-mentioned clamping and guiding units 3 includes two clamping and guiding components 32.

[0027] In this embodiment, the above-mentioned translation driving device 31 is a cylinder, and each of the above-mentioned clamping guide units also includes a spring seat 33 and a spring component 34. The above-mentioned spring component 34 is arranged between the above-mentioned spring seat 33 and the above-mentioned clamping guide component 32. The elastic force of the above-mentioned spring component 34 drives the above-mentioned clamping guide component 32 to translate in a direction away from the center of the above-mentioned coating through hole 131.

[0028] The translation drive device 31 adopts a cylinder, which has the advantages of simple structure, large output force, low price, strong durability and strong adaptability. The translation drive device 31 is a cylinder, and the cylinder drives the clamping guide component 32 to approach the raised coating area, and the elastic force of the spring component 34 drives the clamping guide component 32 away from the raised coating area, and the driving cost is low. In this embodiment, the above-mentioned spring component 34 is a compression spring.

[0029] In this embodiment, each of the clamping guide units 3 further includes a translation guide assembly, and the translation guide assembly guides the clamping guide component 32 to move in translation.

[0030] The clamping guide unit 3 also includes a translation guide assembly, which can ensure that the clamping guide component 32 translates more smoothly. Specifically, the translation guide assembly is a slide rail and slider assembly, including a slide rail 35 and a slider 36, the slider 36 is slidably connected to the slide rail 35, and one or more clamping guide components 32 are installed on the slider 36. In this embodiment, one end of the compression spring abuts against the slider 36, and the other end abuts against the spring seat 33.

[0031] In this embodiment, the rack unit 1 includes a fixed bracket 11, a lifting drive device 12 and a lifting bracket 13. The carrier unit 2 is installed on the fixed bracket 11. The lifting drive device 12 is installed on the fixed bracket 11 and drives the lifting bracket 13 to rise. The lifting bracket 13 is arranged above the carrier unit 2 and can move up and down. The lifting bracket 13 is provided with a coating through hole 131. The coating through hole 131 is located directly above the raised coating area of ​​the product. The multiple clamping guide units 3 are installed on the lifting bracket 13 and arranged around the coating through hole 131. The clamping guide component 32 is arranged in the coating through hole 131.

[0032] If the clamping guide unit 3 and the carrier unit 2 are arranged at the same height, the clamping guide unit 3 is located outside the carrier unit 2, and is far away from the raised coating area of ​​the product, so that it is difficult for the clamping guide component 32 to clamp the raised coating area of ​​the product. By setting the above-mentioned lifting drive device 12 and the lifting bracket 13, the main body of the clamping guide unit can be arranged above the carrier unit 2, and the clamping guide component 32 is closer to the raised coating area of ​​the product after descending, so that it is easier for the clamping guide unit 3 to clamp the raised coating area of ​​the product. The size of the above-mentioned coating through hole 131 is related to the coating area of ​​the product and the clamping guide unit. Assuming that the orthographic projection of the raised coating area of ​​the product on the set horizontal plane is the first projection, the orthographic projection of the coating through hole on the above-mentioned lifting bracket 13 on the above-mentioned set horizontal plane is the second projection, and the orthographic projection of the clamping guide component 32 on the above-mentioned set horizontal plane is the third projection, then the second projection is larger than the first projection, and the third projection is located in the area between the outer edge of the second projection and the outer edge of the first projection. In this embodiment, the fixed support 11 is a workbench, the lifting support 13 is a flat mounting plate, and the coating through hole 131 passes through the mounting plate.

[0033] In this embodiment, the lifting drive device 12 is a cylinder.

[0034] The lifting drive device 12 uses a cylinder, which has the advantages of simple structure, large output force, low price, strong durability and strong adaptability. The lifting drive device 12 is a cylinder, which drives the lifting bracket 13 and multiple clamping guide units to rise, and the lifting bracket 13 and multiple clamping guide units descend under the action of their own weight, and the driving cost is low.

[0035] In this embodiment, the rack unit 1 further comprises a lifting guide assembly, which connects the rack unit 1 and the lifting bracket 13 and guides the lifting of the lifting bracket 13 .

[0036] The rack unit 1 also includes a lifting guide assembly, which can ensure that the lifting bracket and multiple clamping guide units are lifted more smoothly. Specifically, the lifting guide assembly is a guide column and guide sleeve assembly, including four guide columns 14 and four guide sleeves 15. The four guide columns 14 are erected at the four corners of the fixed bracket, and the four guide sleeves 15 are respectively installed at the four corners of the lifting bracket 13. The four guide sleeves 15 are slidably connected to the four guide columns 14.

[0037] In this embodiment, the film absorbing and coating component 41 is a handheld film absorbing and coating component.

[0038] The film-absorbing and laminating component 41 is a handheld film-absorbing and laminating component, which is suitable for small-scale laminating work through manual laminating. When laminating, the film-absorbing and laminating component is held by hand to absorb the protective film and stick it on the raised laminating area of ​​the product.

[0039] In this embodiment, the raised coating area of ​​the product is rectangular, and the plurality of clamping and guiding units respectively abut against four straight sides of the raised coating area of ​​the product.

[0040] The product in this embodiment is the body of a laptop computer, the raised coating area is a touch mouse, and the touch mouse is rectangular. The coating device in this embodiment can be used to coat the touch mouse of the laptop computer.

[0041] In this embodiment, the film-absorbing coating component 41 is an electrostatic film-absorbing coating component. When an object with static electricity approaches another object without static electricity, due to electrostatic induction, the side of the object without static electricity close to the object with static electricity will accumulate charges of opposite polarity to the charges carried by the charged object (the other side will generate the same number of charges of the same polarity). Since opposite charges attract each other, the "electrostatic adsorption" phenomenon will occur. The electrostatic film-absorbing coating component is an electrostatic generator. The static electricity generated by the electrostatic generator when it is working is applied to the protective film to be adsorbed. The protective film immediately carries static electricity and adsorbs on the electrostatic film-absorbing coating component. When the electrostatic generator is not working, no static electricity is generated, and the protective film will be separated from the electrostatic film-absorbing coating component. The film-absorbing coating component is an electrostatic film-absorbing coating component. The film-absorbing coating component has a simple structure and is convenient for adsorbing and releasing the protective film.

[0042] In this embodiment, the coating method using the above coating device includes the following steps performed in sequence: S1.1, driving the lifting support 13 upward by the lifting driving device 12; S1.2. The translation drive device 31 drives the clamping guide component 32 to translate toward the direction close to the raised coating area of ​​the product, and the clamping guide surface 321 clamps the edge of the raised coating area of ​​the product; S1.3, driving the lifting support 13 downward by the lifting drive device 12; S1.4, the film-absorbing and coating component 41 moves downward under the guidance of the clamping guide surface 321 until the protective film is attached to the raised coating area of ​​the product; S1.5. The translation drive device 31 drives the clamping guide member 32 to translate in a direction away from the raised coating area of ​​the product, and the clamping guide member 32 releases the edge of the raised coating area of ​​the product; S1.6, driving the lifting support 13 upward by the lifting drive device 12; S1.7, taking away the product on the carrier unit 2.

[0043] In the above steps S1.1 and S1.6, the height of the lifting bracket 13 moving upward is based on not affecting the picking and placing of the product. In the above step S1.3, the height of the lifting bracket 13 moving downward is based on the clamping guide component 32 being located around the raised coating area of ​​the product, that is, the clamping guide component can translate to clamp the raised coating area of ​​the product. In step S1.3, the lifting bracket 13 moves downward under the weight of the lifting bracket 13 and the multiple clamping guide units 3; in step S1.5, the clamping guide component 32 translates in a direction away from the raised coating area of ​​the product under the elastic force of the spring component 34. Through the above coating method, the protective film can be accurately attached to the raised coating area of ​​the product. Embodiment 2

[0044] The rest is the same as the first embodiment, except that the lifting drive device, the lifting bracket and the lifting drive assembly are not included.

[0045] In this embodiment, the position requirements for the clamping guide unit and the product are relatively high. It is necessary to ensure that the clamping guide unit does not affect the placement of the product, and at the same time it is necessary to be able to clamp the raised coating area of ​​the product.

[0046] The coating method using the coating device in this embodiment includes the following steps performed in sequence: S2.1. Place the product on the above-mentioned carrier unit, with the raised film-coated area of ​​the product facing upwards; S2.2. The translation drive device drives the clamping guide component to translate toward the direction close to the raised coating area of ​​the product, and the clamping guide surface clamps the edge of the raised coating area of ​​the product; S2.3, the film absorbing and coating component moves downward under the guidance of the clamping guide surface until the protective film is attached to the raised coating area of ​​the product; S2.4. The translation drive device drives the clamping guide component to translate in a direction away from the raised coating area of ​​the product, and the clamping guide component releases the edge of the raised coating area of ​​the product; S2.5. Take away the products on the above-mentioned carrier unit. Embodiment 3

[0047] The rest is the same as the first embodiment, except that the above-mentioned film absorption coating unit also includes a moving platform, which drives the moving bracket to move, and the film absorption coating component is connected to the moving bracket in a floating manner in the horizontal direction. That is to say, when the film absorption coating component is not subjected to an external force in the horizontal direction, the positions of the film absorption coating component and the moving bracket remain unchanged. When the film absorption coating component is subjected to an external force in the horizontal direction, the film absorption coating component can adaptively move horizontally under the action of the external force in the horizontal direction.

[0048] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A coating device, characterized in that: include: Rack units; A carrier unit, the carrier unit is mounted on the frame unit, and the carrier unit is used to position the product so that the raised film-coating area of ​​the product faces upward; A plurality of clamping guide units, the plurality of clamping guide units are mounted on the frame unit and arranged around the raised coating area of ​​the product, each of the clamping guide units comprises a translation driving device and a clamping guide component, the translation driving device is used to drive the clamping guide component to translate along a direction close to the raised coating area of ​​the product, a clamping guide surface is provided on one side of the clamping guide component close to the raised coating area of ​​the product, and a lower portion of the clamping guide surface is used to abut against an edge of the raised coating area of ​​the product; The film absorbing and coating unit comprises a film absorbing and coating component, the film absorbing and coating component is used for absorbing the protective film, and the film absorbing and coating component is close to the raised coating area of ​​the product under the guidance of the upper part of the clamping guide surface.

2. The coating device according to claim 1, characterized in that: The clamping guide surface is an inclined surface, and the inclined surface faces obliquely upward.

3. The coating device according to claim 1, characterized in that: Each of the clamping and guiding units includes one of the translation driving devices and a plurality of the clamping and guiding components, and different of the clamping and guiding components abut against different positions of the edge of the raised coating area of ​​the product.

4. The coating device according to claim 1, characterized in that: The translation driving device is a cylinder, and each of the clamping guide units also includes a spring seat and a spring component. The spring component is arranged between the spring seat and the clamping guide component. The elastic force of the spring component drives the clamping guide component to translate in a direction away from the raised coating area of ​​the product.

5. The coating device according to claim 1, characterized in that: The rack unit includes a fixed bracket, a lifting drive device and a lifting bracket, the carrier unit is installed on the fixed bracket, the lifting drive device is installed on the fixed bracket and drives the lifting bracket to rise, the lifting bracket is arranged above the carrier unit and can move up and down, the lifting bracket is provided with a coating through hole, the coating through hole is located directly above the raised coating area of ​​the product, the multiple clamping guide units are installed on the lifting bracket and arranged around the coating through hole, and the clamping guide component is located in the coating through hole.

6. The coating device according to claim 5, characterized in that: The lifting drive device is a cylinder.

7. The coating device according to claim 1, characterized in that: The film absorbing and coating component is a handheld film absorbing and coating component.

8. The coating device according to claim 1, characterized in that: The raised coating area of ​​the product is rectangular, and the plurality of clamping guide components respectively clamp the four straight sides of the raised coating area of ​​the product.

9. A coating method, using the coating device according to any one of claims 1 to 8, characterized in that: The coating method comprises the following steps performed in sequence: S1. Place the product on the carrier unit, with the raised film-coated area of ​​the product facing upwards; S2, the translation driving device drives the clamping guide component to translate toward the direction close to the raised coating area of ​​the product, and the clamping guide surface clamps the edge of the raised coating area of ​​the product; S3, the film absorbing and coating component moves downward under the guidance of the clamping guide surface until the protective film is attached to the raised coating area of ​​the product; S4, the translation driving device drives the clamping guide component to translate in a direction away from the raised coating area of ​​the product, and the clamping guide component releases the edge of the raised coating area of ​​the product; S5. Take away the product on the carrier unit.

10. The coating method according to claim 9, characterized in that: In step S1, the lifting bracket is first driven upward by the lifting drive device of the coating device described in claim 5 or 6, and then the product is placed on the carrier unit; in step S2, the lifting bracket is first driven downward by the lifting drive device of the coating device described in claim 5 or 6, and then the raised coating area of ​​the product is clamped by the clamping guide component; in step S5, the lifting bracket is first driven upward by the lifting drive device of the coating device described in claim 5 or 6, and then the product on the carrier unit is taken away.

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