Coating drum cleaning unit

Abstract

The invention relates to the technical field of coating drum cleaning, in particular to a coating drum cleaning unit which comprises an overturning assembly, a scraper assembly and a collecting assembly. Wherein the turnover assembly is arranged in the box body; the scraper assembly is arranged on the overturning assembly and is close to the main drum; the collecting assembly is rotationally connected into the box body and connected with the overturning assembly, the scraper assembly is arranged close to the collecting assembly, and the overturning assembly is used for driving the scraper assembly and the collecting assembly to rotate synchronously so that the scraper assembly can abut against the surface of the main drum. And the collecting assembly is used for collecting impurities scraped from the main drum. The method has the effect of reducing the possibility that the coating quality is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of coating drum cleaning, and in particular to a coating drum cleaning unit. Background Art

[0002] At present, vacuum coating winding equipment is widely used in a variety of coating processes, such as magnetron sputtering, multi-arc ion coating, resistance thermal evaporation, etc. One of the core components of this type of equipment is the coating drum (main drum), which is used to carry thin film materials for coating treatment, and the main drum is usually installed in a box to ensure that the coating process is in a vacuum environment. In recent years, with the advancement of thin film technology, especially in applications represented by the composite current collector industry, the requirements for coating substrates have become increasingly higher. Not only is the film itself becoming thinner, but the coating thickness is also gradually increasing. This trend has brought significant technical challenges, because a lot of heat will be generated during the coating process, which can easily cause coating defects such as perforation, coating splashing, and winding. At the same time, many pollutants or coating ash will also be plated on the main drum, forming many raised defects on the main drum. These defects will repeat on the plated film as the main drum is used during the coating process, resulting in a decrease in coating quality.

[0003] Therefore, a coating drum cleaning unit is urgently needed. Summary of the invention

[0004] In order to reduce the possibility of degradation of coating quality, the present application provides a coating drum cleaning unit.

[0005] The present application provides a coating drum cleaning unit, which adopts the following technical solution: A coating drum cleaning unit, comprising: A flip assembly is arranged in the box; A scraper assembly is arranged on the flip assembly and close to the main drum; The collecting assembly is rotatably connected to the casing and connected to the flipping assembly. The scraper assembly is arranged close to the collecting assembly. The flipping assembly is used to drive the scraper assembly and the collecting assembly to rotate synchronously so that the scraper assembly contacts the surface of the main drum. The collecting assembly is used to collect impurities scraped from the main drum.

[0006] By adopting the above technical solution, when the surface of the main drum needs to be cleaned, the flipping assembly works to drive the scraper assembly and the collecting assembly to rotate synchronously, so that one end of the scraper assembly can be in contact with the surface of the main drum, thereby facilitating the use of the scraper assembly to scrape off impurities on the surface of the main drum to achieve effective cleaning of the surface of the main drum. At the same time, the collecting assembly can promptly collect the impurities scraped off the main drum by the scraper assembly to avoid the impurities from contaminating the surface of the main drum again, which to a certain extent reduces the possibility of the raised defects on the surface of the main drum having an adverse effect on the coating process, thereby helping to reduce the possibility of reduced coating quality, so as to improve the overall qualified rate of the film roll after coating.

[0007] Optionally, the flipping assembly includes a flipping drive member, a transmission member and a rotating arm, the flipping drive member is arranged in the box, one end of the transmission member is connected to the flipping drive member, and the other end of the transmission member is connected to the rotating arm, the rotating arm is respectively connected to the collecting assembly and the scraper assembly, and the flipping drive member can drive the rotating arm to rotate through the transmission member.

[0008] By adopting the above technical solution, the flip driving member can drive the rotating arm to rotate through the transmission member, and the rotating arm can drive the scraper assembly to move, so that the scraper assembly can accurately contact the surface of the main drum, so that the scraper assembly can clean the surface of the main drum. At the same time, the collecting assembly can efficiently collect impurities scraped from the main drum by the scraper assembly, which is conducive to the effective cleaning of the raised defect points on the surface of the main drum, and to a certain extent avoids the film material quality problems caused by the main drum defects during the coating process. Optionally, the transmission member includes a gear and an arc-shaped rack, the gear is fixedly connected to the output end of the flip driving member, and the arc-shaped rack is arranged on the rotating arm and meshes with the gear.

[0009] By adopting the above technical solution, when the scraper assembly needs to be moved closer to or away from the surface of the main drum, the flip driving part is operated to drive the gear to rotate, and the gear can drive the arc-shaped rack to rotate, so that it is convenient to use the arc-shaped rack to accurately control the rotation of the rotating arm to achieve the precise fitting and cleaning of the scraper assembly to the surface of the main drum, and through the mutual cooperation of the gear and the arc-shaped rack, the contact force between the scraper assembly and the surface of the main drum can be accurately adjusted, which is beneficial to reduce the possibility of damage to the main drum due to improper cleaning force, ensure the flatness and cleanliness of the main drum surface, and improve the success rate of coating.

[0010] Optionally, the collecting assembly includes a powder receiving box, a sticky rubber roller and a brush roller, the sticky rubber roller is rotatably connected to the box body, the powder receiving box is sleeved on the sticky rubber roller and is rotatably connected to the sticky rubber roller, the powder receiving box is connected to the flip assembly, a collecting port is provided on a side of the powder receiving box close to the scraper assembly, the brush roller is rotatably connected in the powder receiving box and is arranged close to the collecting port, and the circumferential side walls of the brush roller are respectively in contact with the sticky rubber roller and the scraper assembly.

[0011] By adopting the above technical solution, when the surface of the main drum needs to be cleaned, the flipping assembly works to drive the scraper assembly to contact the surface of the main drum, and at the same time drives the powder box and the brush roller to move synchronously, so that when the scraper assembly cleans the surface of the main drum, the brush roller and the sticky rubber roller can rotate, so that the brush roller sweeps the impurities scraped off by the scraper assembly into the powder box through the collection port, and the brush roller can guide the impurities to the sticky rubber roller, so as to utilize the adhesion effect of the sticky rubber roller to adsorb the impurities, which is beneficial to reduce the possibility of impurities being scattered again and causing secondary pollution.

[0012] Optionally, a synchronous driving member is provided between the brush roller and the sticky rubber roller, and the synchronous driving member is used to drive the brush roller and the sticky rubber roller to rotate synchronously.

[0013] By adopting the above technical solution, the synchronous driving member can drive the brush roller and the sticky rubber roller to rotate synchronously, so that the brush roller and the sticky rubber roller can work together, so as to utilize the sticky rubber roller to absorb impurities on the brush roller, thereby facilitating improving the cleaning efficiency.

[0014] Optionally, a dust blocking rod is provided in the powder receiving box, the dust blocking rod is located between the brush roller and the sticky rubber roller, and the dust blocking rod is located on a side of the brush roller away from the collecting port and in contact with the brush roller.

[0015] By adopting the above technical solution, when the brush roller sweeps the impurities scraped off by the scraper assembly into the powder receiving box, the dust blocking rod can effectively block the impurities on the brush roller, so that the impurities are separated from the brush roller and guided to the sticky rubber roller, which is beneficial to reduce the possibility of impurities floating back into the vacuum chamber and causing secondary pollution, and further helps to improve the cleaning efficiency and the stability of the vacuum environment.

[0016] Optionally, the brush roller is made of antistatic material.

[0017] By adopting the above technical solution, the brush roller is made of anti-static material, which can effectively avoid electrostatic adsorption of additional dust or particles during the cleaning process, thereby helping to improve the efficiency and quality of cleaning, and to a certain extent ensure the cleanliness of the main drum surface, thereby reducing the secondary pollution caused by electrostatic adsorption, and helping to improve the overall coating quality.

[0018] Optionally, the powder receiving box is provided with an opening, and a sealing cover is hingedly connected to the powder receiving box, and the sealing cover is used to close or open the opening.

[0019] By adopting the above technical solution, an opening is provided on the powder collecting box and a sealing cover is hingedly connected thereto. The sealing cover can close or open the opening during maintenance and cleaning, thereby facilitating the cleaning of collected impurities, simplifying the maintenance steps to a certain extent, ensuring the cleanliness of the interior of the equipment, and further improving the overall work efficiency.

[0020] Optionally, the scraper assembly includes an upper scraper seat, a lower scraper seat and a scraper, the lower scraper seat is arranged on the flip assembly, the upper scraper seat is detachably connected to the lower scraper seat, the scraper is arranged between the upper scraper seat and the lower scraper seat, and the end of the scraper away from the upper scraper seat is arranged close to the main drum.

[0021] By adopting the above technical solution, the upper scraper seat and the lower scraper seat in the scraper assembly form a stable structure, ensuring that the scraper can accurately fit the surface of the main drum when cleaning the surface of the main drum, thereby effectively scraping off the raised defect points on the surface of the main drum; the detachable connection design between the upper scraper seat and the lower scraper seat makes it more convenient to replace the worn scraper, thereby ensuring the sharpness and cleaning effect of the scraper during long-term use, ensuring that the surface of the main drum always remains clean.

[0022] Optionally, an elastic pad is provided between the scraper and the upper scraper seat.

[0023] By adopting the above technical solution, the setting of the elastic pad can enable the scraper to have a certain elastic deformation ability when cleaning the surface of the main drum, so that the elastic pad can absorb and buffer the impact force caused by the scraper on the surface of the main drum, ensuring that while effectively cleaning the raised defects on the surface of the main drum, the scraper will not cause scratches or other damages to the surface of the main drum, which is beneficial to ensure the service life and surface finish of the main drum.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the mutual cooperation of the flip assembly, the scraper assembly and the collecting assembly, the flip assembly can drive the scraper assembly and the collecting assembly to rotate synchronously, so that the scraper assembly can be used to scrape off the impurities on the main drum surface to achieve effective cleaning of the main drum surface. At the same time, the collecting assembly can timely collect the impurities scraped off the main drum by the scraper assembly to avoid the impurities from contaminating the main drum surface again, which reduces the possibility of the protrusion defects on the main drum surface having an adverse effect on the coating process to a certain extent, thereby helping to reduce the possibility of reduced coating quality; 2. Through the mutual cooperation of the flip driving member, gear, arc-shaped rack and rotating arm, the rotating driving member can accurately control the rotation of the rotating arm through the gear and arc-shaped rack, so as to facilitate the accurate adjustment of the contact force between the scraper assembly and the main drum surface, thereby helping to reduce the possibility of damage to the main drum due to improper cleaning force, ensuring the flatness and cleanliness of the main drum surface and improving the success rate of coating; 3. Through the cooperation between the powder receiving box, the brush roller and the sticky rubber roller, the brush roller can sweep the impurities scraped off by the scraper assembly into the powder receiving box through the collection port, and the brush roller can guide the impurities to the sticky rubber roller so that the impurities can be adsorbed by the adhesion effect of the sticky rubber roller, which is helpful to reduce the possibility of secondary pollution caused by the impurities being scattered again. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a coating drum cleaning unit in an embodiment of the present application.

[0026] Figure 2 It is a partial structural schematic diagram of a coating drum cleaning unit when cleaning the main drum in an embodiment of the present application.

[0027] Figure 3 It is a schematic diagram of the structure of the scraper assembly in this application.

[0028] Figure 4 It is a schematic diagram of the structure of the collection component in this application.

[0029] Description of reference numerals: 1. Flip assembly; 11. Flip drive; 12. Transmission; 121. Gear; 122. Arc rack; 13. Rotating arm; 2. Scraper assembly; 21. Upper scraper seat; 22. Lower scraper seat; 23. Scraper; 24. Elastic pad; 3. Collecting assembly; 31. Powder collecting box; 311. Collecting port; 312. Dust blocking rod; 313. Opening; 314. Sealing cover; 32. Sticky rubber roller; 33. Brush roller; 34. Synchronous driving part; 341. Reduction motor; 342. Synchronous belt; 4. Box; 5. Main drum. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] An embodiment of the present application discloses a coating drum cleaning unit.

[0032] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] Reference Figure 1 and Figure 2 The coating drum cleaning unit includes a flip assembly 1, a scraper assembly 2 and a collection assembly 3. The flip assembly 1 is arranged in a box body 4, the collection assembly 3 is rotatably connected in the box body 4 and connected to the flip assembly 1, the scraper assembly 2 is arranged close to the collection assembly 3, and the flip assembly 1 is used to drive the scraper assembly 2 and the collection assembly 3 to rotate synchronously, so that the scraper assembly 2 is in contact with the surface of the main drum 5, so that the scraper assembly 2 is convenient to effectively clean the surface of the main drum 5, and the collection assembly 3 can synchronously collect impurities scraped from the main drum 5, so as to effectively clean the convex defects on the surface of the main drum 5 and avoid the defects of the main drum 5 from repeatedly affecting the coating process, and significantly improve the coating quality.

[0034] Reference Figure 1 The flip assembly 1 includes a flip driving member 11, a transmission member 12 and a rotating arm 13. The flip driving member 11 is installed in the box 4, one end of the transmission member 12 is connected to the flip driving member 11, and the other end of the transmission member 12 is connected to the rotating arm 13. In this embodiment, the flip driving member 11 is a vacuum torque motor, so that the flip driving member 11 can drive the rotating arm 13 to rotate through the transmission member 12.

[0035] The transmission member 12 includes a gear 121 and an arc-shaped rack 122. The gear 121 is fixedly connected to the output end of the flip driving member 11, and the arc-shaped rack 122 is installed on the rotating arm 13 and meshes with the gear 121, so that the flip driving member 11 can accurately control the rotation of the rotating arm 13 through the gear 121 and the arc-shaped rack 122.

[0036] Reference Figure 2 and Figure 3 The scraper assembly 2 includes an upper scraper seat 21, a lower scraper seat 22 and a scraper 23. The lower scraper seat 22 is fixedly connected to the rotating arm 13, and the upper scraper seat 21 is detachably connected to the lower scraper seat 22. In this embodiment, the upper scraper seat 21 and the lower scraper seat 22 are fixedly connected by screws.

[0037] The scraper 23 is clamped between the upper scraper seat 21 and the lower scraper seat 22, so that the scraper 23 can be easily replaced. The scraper 23 can be made of stainless steel, composite plastic or carbon fiber. The end of the scraper 23 away from the upper scraper seat 21 is close to the main drum 5 and adopts an acute angle design, and the blade of the scraper 23 close to the main drum 5 is opposite to the rotation direction of the main drum 5, so as to ensure that the scraper 23 can effectively clean the raised defects on the surface of the main drum 5.

[0038] When the surface of the main drum 5 needs to be cleaned, the turning driving member 11 (refer to Figure 1 ) works to drive the gear 121 to rotate, the gear 121 can drive the arc rack 122 to rotate, and the arc rack 122 drives the rotating arm 13 to rotate, so that the rotating arm 13 can drive the scraper 23 to move through the upper scraper seat 21 and the lower scraper seat 22, so that the scraper 23 is close to or away from the surface of the main drum 5, thereby facilitating the use of the scraper 23 to clean the main drum 5.

[0039] In this embodiment, the flip driving member 11 can adopt a torque mode to control the contact force between the scraper 23 and the surface of the main drum 5, thereby helping to reduce the possibility of damaging the main drum 5 due to improper cleaning force.

[0040] Reference Figure 2 and Figure 3 , an elastic pad 24 is provided between the scraper 23 and the upper scraper seat 21. In this embodiment, the elastic pad 24 is made of rubber material, so as to ensure that the scraper 23 has certain flexibility and adaptability when contacting the surface of the main drum 5, and avoid damage to the main drum 5 due to excessive pressing force. In other embodiments, the elastic pad 24 can also be made of a polymer material with good elasticity, high temperature resistance, and wear resistance, so as to ensure that the elastic pad 24 can work stably for a long time in a vacuum environment.

[0041] Reference Figure 1 and Figure 4 The collecting assembly 3 includes a powder receiving box 31, a sticky rubber roller 32 and a brush roller 33. The sticky rubber roller 32 is mounted on the box body 4 through a bearing and a bearing seat, so that the sticky rubber roller 32 can rotate, and a seal (not shown in the figure) is provided between the sticky rubber roller 32 and the box body 4. In this embodiment, the seal adopts a magnetic fluid or a skeleton oil seal, which is conducive to improving the sealing performance between the sticky rubber roller 32 and the box body 4, so as to maintain the vacuum environment in the box body 4.

[0042] In this embodiment, the sticky rubber roller 32 is a silicone roller with a roller surface hardness between 30 and 40 degrees Shore A. The roller surface of the sticky rubber roller 32 has a certain degree of stickiness, so that the sticky rubber roller 32 can be used to stick to impurities such as particles and dust.

[0043] Reference Figure 2The powder box 31 is sleeved on the sticky rubber roller 32 and is rotatably connected to the sticky rubber roller 32. The rotating arm 13 is installed on the sticky rubber roller 32 through a bearing and is fixedly connected to the powder box 31, so that the rotating arm 13 can drive the powder box 31 to rotate around the axis of the sticky rubber roller 32.

[0044] Reference Figure 1 The brush roller 33 is rotatably connected in the powder receiving box 31 and is arranged parallel to the adhesive roller 32, and one end of the brush roller 33 extends out of the powder receiving box 31 and is connected to the rotating arm 13 through a bearing, so that the brush roller 33 can rotate in the powder receiving box 31, and then when the rotating arm 13 rotates, the rotating arm 13 can drive the brush roller 33 to rotate. In other embodiments, the brush roller 33 can also be only rotatably connected to the powder receiving box 31, but not connected to the rotating arm 13.

[0045] A synchronous driving member 34 is provided between the brush roller 33 and the adhesive rubber roller 32. In this embodiment, the synchronous driving member 34 includes a reduction motor 341 and a synchronous belt 342, the reduction motor 341 is installed outside the box body 4, and one end of the adhesive rubber roller 32 extends out of the box body 4 and is fixedly connected to the output end of the reduction motor 341, so that the reduction motor 341 is used to drive the adhesive rubber roller 32 to rotate.

[0046] The synchronous belt 342 is located outside the powder box 31, and the synchronous belt 342 is connected to the brush roller 33 and the sticky rubber roller 32 respectively, so that when the sticky rubber roller 32 rotates, the sticky rubber roller 32 can drive the brush roller 33 to rotate through the synchronous belt 342, so that the brush roller 33 and the sticky rubber roller 32 rotate synchronously, thereby facilitating the brush roller 33 and the sticky rubber roller 32 to work together.

[0047] Reference Figure 4 A collecting port 311 is provided on one side of the powder receiving box 31 close to the main drum 5, and a brush roller 33 is arranged close to the collecting port 311. The brush on the brush roller 33 passes through the collecting port 311 and is arranged close to the scraper 23, and the brush on the brush roller 33 also contacts the circumferential side wall of the sticky rubber roller 32, so that the brush roller 33 can be used to sweep the impurities scraped off by the scraper 23 into the powder receiving box 31 through the collecting port 311, and guide the impurities to the sticky rubber roller 32, so that the impurities can be adsorbed by the adhesion effect of the sticky rubber roller 32, which is conducive to reducing the possibility of secondary pollution caused by the impurities being scattered again.

[0048] In this embodiment, the brush roller 33 is made of anti-static material, which can effectively avoid electrostatic adsorption of additional dust or particles during the cleaning process, thereby helping to improve the efficiency and quality of cleaning, ensuring the cleanliness of the surface of the main drum 5 to a certain extent, thereby reducing the secondary pollution caused by electrostatic adsorption, and helping to improve the overall coating quality.

[0049] A dust blocking rod 312 is fixedly connected to the powder receiving box 31, and the dust blocking rod 312 is located between the brush roller 33 and the sticky rubber roller 32. The dust blocking rod 312 is located on the side of the brush roller 33 away from the collecting port 311 and in contact with the brush roller 33. Therefore, when the brush roller 33 sweeps impurities into the powder receiving box 31, the dust blocking rod 312 can effectively block the impurities on the brush roller 33, so that the impurities are separated from the brush roller 33 and guided to the sticky rubber roller 32.

[0050] Reference Figure 4 The powder receiving box 31 is provided with an opening 313, and a sealing cover 314 is hingedly connected to the powder receiving box 31. In this embodiment, the sealing cover 314 is connected to the powder receiving box 31 by a hinge, so that the sealing cover 314 is convenient for closing or opening the opening 313.

[0051] After the coating is completed, the equipment needs to be cleaned. At this time, the sealing cover 314 is opened to clean the impurities collected in the powder box 31, which simplifies the maintenance steps to a certain extent, ensures the cleanliness inside the equipment, and further improves the overall work efficiency. In this embodiment, alcohol or other solvents can be used to scrub the adhesive roller 32, the brush roller 33 and the scraper 23.

[0052] The implementation principle of a coating drum cleaning unit in the embodiment of the present application is as follows: when the surface of the main drum 5 needs to be cleaned, the flip driving member 11 works to drive the gear 121 to rotate, the gear 121 drives the rotating arm 13 to rotate through the arc-shaped rack 122, and the rotating arm 13 drives the scraper 23 to move through the upper scraper seat 21 and the lower scraper seat 22, so that the scraper 23 is in contact with the surface of the main drum 5, so as to facilitate the use of the scraper 23 to clean the surface of the main drum 5. In this process, the reduction motor 341 drives the sticky rubber roller 32 to rotate, and the sticky rubber roller 32 drives the brush roller 33 to rotate through the synchronous belt 342, so that the brush roller 33 can sweep the impurities scraped off by the scraper 23 into the powder receiving box 31 and guide the impurities to the sticky rubber roller 32, so as to use the adhesion of the sticky rubber roller 32 to absorb the impurities, thereby reducing the possibility of impurities being scattered again and causing secondary pollution. After the cleaning is completed, the flip driving member 11 works in the reverse direction to drive the scraper 23 to separate from the main drum 5, and at the same time the reduction motor 341 stops working, so that the brush roller 33 and the adhesive rubber roller 32 stop rotating.

[0053] It should be noted that the coating drum cleaning unit in the present application will not affect the vacuum degree while ensuring the normal cleaning of the main drum 5, and ensures that impurities such as dust and particles cleaned by the scraper 23 will not fall to any position in the vacuum chamber.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coating drum cleaning unit, characterized in that: include: A turning assembly (1) is arranged in the box body (4); A scraper assembly (2) is arranged on the flip assembly (1) and is arranged close to the main drum (5); The collecting assembly (3) is rotatably connected in the box body (4) and connected to the flip assembly (1); the scraper assembly (2) is arranged close to the collecting assembly (3); the flip assembly (1) is used to drive the scraper assembly (2) and the collecting assembly (3) to rotate synchronously so that the scraper assembly (2) contacts the surface of the main drum (5); and the collecting assembly (3) is used to collect impurities scraped from the main drum (5).

2. The coating drum cleaning unit according to claim 1, characterized in that: The flip assembly (1) comprises a flip driving member (11), a transmission member (12) and a rotating arm (13); the flip driving member (11) is arranged in the box body (4); one end of the transmission member (12) is connected to the flip driving member (11); the other end of the transmission member (12) is connected to the rotating arm (13); the rotating arm (13) is respectively connected to the collecting assembly (3) and the scraper assembly (2); the flip driving member (11) can drive the rotating arm (13) to rotate through the transmission member (12).

3. The coating drum cleaning unit according to claim 2, characterized in that: The transmission member (12) comprises a gear (121) and an arc-shaped rack (122); the gear (121) is fixedly connected to the output end of the flip driving member (11); the arc-shaped rack (122) is arranged on the rotating arm (13) and meshes with the gear (121).

4. The coating drum cleaning unit according to claim 1, characterized in that: The collecting assembly (3) comprises a powder receiving box (31), a sticky rubber roller (32) and a brush roller (33); the sticky rubber roller (32) is rotatably connected to the box body (4); the powder receiving box (31) is sleeved on the sticky rubber roller (32) and is rotatably connected to the sticky rubber roller (32); the powder receiving box (31) is connected to the flip assembly (1); a collecting port (311) is provided on a side of the powder receiving box (31) close to the scraper assembly (2); the brush roller (33) is rotatably connected in the powder receiving box (31) and is arranged close to the collecting port (311); and the circumferential side walls of the brush roller (33) are in contact with the sticky rubber roller (32) and the scraper assembly (2) respectively.

5. The coating drum cleaning unit according to claim 4, characterized in that: A synchronous driving member (34) is provided between the brush roller (33) and the adhesive rubber roller (32), and the synchronous driving member (34) is used to drive the brush roller (33) and the adhesive rubber roller (32) to rotate synchronously.

6. The coating drum cleaning unit according to claim 4, characterized in that: A dust blocking rod (312) is provided in the powder receiving box (31), and the dust blocking rod (312) is located between the brush roller (33) and the adhesive rubber roller (32). The dust blocking rod (312) is located on a side of the brush roller (33) away from the collecting port (311) and is in contact with the brush roller (33).

7. The coating drum cleaning unit according to claim 4, characterized in that: The brush roller (33) is made of antistatic material.

8. The coating drum cleaning unit according to claim 4, characterized in that: The powder receiving box (31) is provided with an opening (313), and a sealing cover (314) is hingedly connected to the powder receiving box (31), and the sealing cover (314) is used to close or open the opening (313).

9. The coating drum cleaning unit according to claim 1, characterized in that: The scraper assembly (2) comprises an upper scraper seat (21), a lower scraper seat (22) and a scraper (23); the lower scraper seat (22) is arranged on the flip assembly (1); the upper scraper seat (21) is detachably connected to the lower scraper seat (22); the scraper (23) is arranged between the upper scraper seat (21) and the lower scraper seat (22); and an end of the scraper (23) away from the upper scraper seat (21) is arranged close to the main drum (5).

10. The coating drum cleaning unit according to claim 9, characterized in that: An elastic pad (24) is provided between the scraper (23) and the upper scraper seat (21).

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