Back roller cleaning device, coating equipment and battery manufacturing equipment

Abstract

The embodiment of the utility model provides a back roller cleaning device, coating equipment and battery manufacturing equipment. The back roller cleaning device is used for the coating equipment and comprises a mounting frame, a scraper unit and an angle adjusting unit, the mounting frame comprises a first support and a second support, the first support is used for being connected with the coating equipment, and the second support is adjustably mounted on the first support; the scraper unit comprises a scraper used for cleaning the back roller, and the scraper faces the peripheral face of the back roller and is in clearance fit with the back roller. The angle adjusting unit is arranged between the second support and the scraper unit and used for adjusting the angle between the scraper and the back roller. According to the technical scheme provided by the invention, the angle of the scraper is adjustable, and slurry adhered to the surface of the back roller of the coating equipment can be well cleaned.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a back roller cleaning device, a coating device and a battery manufacturing device. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] During the manufacturing process of batteries, coating is the main production process of battery pole pieces, and the pole pieces need to be coated by a coater. At present, the back roller of the coater is prone to sticking, resulting in poor pole piece surface or sticking in the actual production process, affecting the quality of the battery. Utility Model Content

[0004] The present application provides a back roller cleaning device, a coating device and a battery manufacturing device. The angle of the scraper is adjustable, and the slurry particles adhered to the back roller can be cleaned well, meeting the consistency requirements of the slit coating device.

[0005] This application is achieved through the following technical solutions:

[0006] In the first aspect, an embodiment of the present application provides a back roller cleaning device, which is used for a coating device. The back roller cleaning device includes a mounting frame, a scraper unit and an angle adjustment unit. The mounting frame includes a first bracket and a second bracket. The first bracket is used to connect with the coating device, and the second bracket is adjustably mounted on the first bracket. The scraper unit includes a scraper blade for cleaning the back roller, and the scraper blade is arranged toward the outer peripheral surface of the back roller and is matched with the gap of the back roller. The angle adjustment unit is arranged between the second bracket and the scraper unit, and the angle adjustment unit is used to adjust the angle between the scraper blade and the back roller.

[0007] In this solution, the mounting frame serves as a bearing component of the back roller cleaning device. The mounting frame is fixedly mounted on the coating device. The mounting frame includes a first bracket and a second bracket. The second bracket is adjustably arranged on the first bracket. By adjusting the position of the second bracket relative to the first bracket, the relative position of the scraper and the back roller can be adjusted accordingly to meet the installation requirements of the scraper position and can be adapted to back rollers of different sizes. The scraper unit is arranged on the mounting frame. The scraper in the scraper unit is arranged toward the back roller. The slurry particles and dust particles attached to the back roller can be scraped off to clean the back roller. The scraper is fitted with a gap between the outer peripheral surface of the back roller. There is a gap between the scraper and the outer peripheral surface of the back roller. The scraper will not affect the circular runout of the back roller, ensuring the coating quality of the back roller to the pole piece. In addition, an angle adjustment unit is provided between the mounting frame and the scraper unit. The angle adjustment unit can adjust the angle between the scraper in the scraper unit and the back roller, and according to the actual cleaning condition of the back roller, the scraper and the back roller are set at an elevation angle and at a desired angle. The scraper can better scrape off the slurry particles and dust particles attached to the outer peripheral surface of the back roller, has a good cleaning effect on the back roller, meets the consistency requirements of slit coating, and realizes stable coating quality of the coating equipment.

[0008] According to some embodiments of the present application, the angle adjustment unit includes a base, a rotating member and a limit assembly, the base is connected to the second bracket; the rotating member is connected to the scraper unit, the rotating member is rotatably mounted on the base, and the rotation axis of the rotating member is parallel to the rotation axis of the back roller; the limit assembly is arranged on the base, and the limit assembly is used to limit the rotation of the rotating member relative to the base.

[0009] In the above scheme, the rotating member is rotatably mounted on the base, and the rotation axis of the rotating member is parallel to the rotation axis of the back roller. By rotating the rotating member, the scraper blade can be driven to rotate, thereby adjusting the angle between the scraper blade and the back roller to meet the angle adjustment requirements of the scraper blade. When the angle of the scraper blade is adjusted to the right position, the angle of the rotating member is limited by the limiting assembly, so that the scraper blade is maintained at this angle, so that the scraper blade can clean and scrape the particles attached to the back roller more stably.

[0010] According to some embodiments of the present application, the limiting assembly includes a first abutment and a second abutment, both of which are telescopically disposed on the base and located on opposite sides of the rotation direction of the rotating member, and the first abutment and the second abutment are respectively used to abut on opposite sides of the rotation direction of the rotating member to limit the rotation of the rotating member relative to the base.

[0011] In the above scheme, the angle of the rotating member can be fixed by respectively abutting one end of the first abutting member and the second abutting member on the opposite sides of the rotating member, and the scraper blade can scrape and clean the particles attached to the back roller more stably. The scraper blade is not easily affected by the reaction force of the particles deposited on the back roller and swings to the side away from the back roller, thereby maintaining a fixed gap between the scraper blade and the back roller, thereby ensuring the cleaning effect of the scraper blade on the particles on the back roller.

[0012] According to some embodiments of the present application, the first abutment member cooperates with the base thread, and the second abutment member cooperates with the base thread.

[0013] In the above scheme, by matching the first abutment with the base thread and the second abutment with the base, when the angle of the scraper blade needs to be adjusted, it is only necessary to rotate the first abutment and the second abutment accordingly to achieve the extension or shortening of the length of the first abutment and the second abutment. After the rotation of the first abutment and the second abutment is completed, the angle of the rotating part is automatically fixed to maintain the angle of the scraper blade. The angle adjustment of the scraper blade is convenient and quick, the structure is simple, and it is easy to implement.

[0014] According to some embodiments of the present application, the rotating member includes a first rotating arm and a second rotating arm, one end of the first rotating arm is rotatably connected to the base, the other end of the first rotating arm is rotatably connected to one end of the second rotating arm, and the end of the second rotating arm facing away from the first rotating arm is connected to the scraper unit; a first locking member is provided at the rotating axis of the first rotating arm and the second rotating arm, and the first locking member is used to limit the relative rotation of the first rotating arm and the second rotating arm.

[0015] In the above scheme, by adopting the rotating parts as the first rotating arm and the second rotating arm, the second rotating arm can rotate relative to the first rotating arm. When it is necessary to fine-tune the angle of the scraper blade or remove the scraper blade, the first locking part can be directly loosened to allow the second rotating arm to rotate relative to the first rotating arm. The distance between the scraper blade and the back roller is increased, and the scraper blade can be removed without adjusting the first abutment and the second abutment. The adjustment is more convenient and the workload when replacing the scraper blade is reduced.

[0016] According to some embodiments of the present application, a reinforcement is arranged between the first rotating arm and the second rotating arm, one end of the reinforcement is hinged to the second rotating arm, the other end of the reinforcement is provided with a first elongated hole, and the other end of the reinforcement is threadedly connected to the first rotating arm through the first elongated hole provided by the second locking member.

[0017] In the above scheme, the locking stability of the first rotating arm and the second rotating arm is not high only by the first locking piece. By providing a reinforcement piece between the first rotating arm and the second rotating arm, the reinforcement piece is passed through the first elongated hole through the second locking piece and is screwed to the first rotating arm. The angle of the first rotating arm and the second rotating arm can be fixed, so that the angle of the first rotating arm and the second rotating arm is more stable. When it is necessary to fine-tune the angle of the scraper blade, it is only necessary to loosen the second locking piece and the first locking piece to fine-tune the angle of the scraper blade. The operation is convenient and quick.

[0018] According to some embodiments of the present application, the number of the angle adjustment units is set to be multiple, and the multiple angle adjustment units are distributed on the mounting frame at intervals along a first direction, and the first direction is parallel to the axial direction of the back roller.

[0019] In the above scheme, through the setting of multiple angle adjustment units, the multiple angle adjustment units can support the scraper unit, so that there are multiple supporting points between the scraper unit and the mounting frame. During the process of the scraper cleaning the back roller, the reaction force borne by the scraper can be transmitted to the mounting frame more evenly, reducing the risk of uneven gap between the scraper and the back roller due to uneven force transmission, and the cleaning effect on the back roller is better.

[0020] According to some embodiments of the present application, the scraper unit includes a base, a cover plate and a first fastener, the base is connected to the angle adjustment unit; the cover plate is covered on the base, the scraper is arranged between the base and the cover plate, the cover plate and the base are pressed together to clamp the scraper; the first fastener is arranged on the cover plate, and the first fastener is used to fasten the cover plate and the base so that the cover plate and the base clamp the scraper.

[0021] In the above scheme, the scraper unit includes a base and a cover plate, the cover plate is arranged on the base, the scraper is arranged between the base and the cover plate, the first fastener applies a fastening force to the cover plate and the base, and the cover plate and the base clamp the scraper, so as to clamp and fix the scraper, and the installation stability of the scraper is high. When the scraper needs to be replaced, it only needs to loosen the first fastener to replace the scraper, and the scraper is easy and quick to disassemble and assemble.

[0022] According to some embodiments of the present application, the scraper unit further includes a dust box, which is disposed on a side of the cover plate away from the base and connected to the cover plate, and is used to collect dust particles scraped by the scraper.

[0023] In the above scheme, by setting the dust box on the cover plate, the dust particles scraped off the back roller by the scraper blade will enter the dust box on the rear side of the scraper blade, and the dust box can collect and temporarily store the dust particles, thereby improving the cleanliness of the back roller cleaning device. With the setting of the dust box, it is only necessary to clean the dust particles in the dust box regularly, which reduces the workload of the staff in cleaning the dust particles and is more time-saving and labor-saving.

[0024] According to some embodiments of the present application, a plurality of first connecting holes are arranged on the first bracket at intervals along a second direction, and the second direction is the length direction of the first bracket; the second bracket is provided with a second connecting hole; the second fastener is passed through the second connecting hole, and the second fastener can be optionally passed through the first connecting hole to fasten the second bracket to the first bracket.

[0025] In the above scheme, by arranging multiple first connecting holes along the second direction on the first bracket, the second fastener is passed through the second connecting hole of the second bracket and then one of the multiple first connecting holes is selected for connection, so that the position of the second bracket in the second direction can be adjusted accordingly, thereby adjusting the distance between the scraper blade and the back roller to meet the position adjustment requirements of the scraper blade.

[0026] According to some embodiments of the present application, there are multiple second connection holes, and the multiple second connection holes are distributed on the second bracket at intervals along the third direction. The second fastener can selectively pass through the second connection hole and the first connection hole, and the third direction is perpendicular to the second direction.

[0027] In the above scheme, by setting the number of second connecting holes to multiple, the second fastener can select any one of the multiple second connecting holes to be screwed to the first connecting hole on the first bracket, so that the position of the second bracket relative to the first bracket in the third direction can be adjusted, thereby realizing the position adjustment of the scraper blade in the third direction, and the position adjustment range of the scraper blade is wider.

[0028] In a second aspect, an embodiment of the present application further provides a coating device, the coating device comprising the back roller cleaning device of any of the aforementioned embodiments.

[0029] In a third aspect, an embodiment of the present application further provides a battery manufacturing device, the battery manufacturing device including the aforementioned coating device.

[0030] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of a structure in which a back roller cleaning device provided in some embodiments of the present application is installed on a coating device;

[0033] Figure 2 A schematic diagram of the structure of the back roller cleaning device and the back roller provided in some embodiments of the present application;

[0034] Figure 3 A schematic diagram of the structure of an angle adjustment unit in a back roller cleaning device provided in some embodiments of the present application;

[0035] Figure 4 A schematic diagram of the structure of a scraper unit in a back roller cleaning device provided in some embodiments of the present application.

[0036] Icons: 100-back roller cleaning device; 10-mounting frame; 11-first bracket; 111-first connecting hole; 12-second bracket; 121-second connecting hole; 20-scraper unit; 21-scraper; 22-base; 23-cover plate; 24-first fastener; 25-dust box; 30-angle adjustment unit; 31-base; 32-rotating member; 321-first rotating arm; 322-second rotating arm; 323-first locking member; 324-reinforcement member; 3241-first long strip hole; 33-limiting assembly; 331-first abutting member; 332-second abutting member; X-first direction; Y-second direction; Z-third direction; 200-coating equipment; 201-back roller; 202-frame. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0039] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0040] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0042] The term "multiple" as used in the present application refers to more than two (including two). Similarly, the term "multiple groups" refers to more than two groups (including two groups), and the term "multiple sheets" refers to more than two sheets (including two sheets).

[0043] In the present application, the battery may include a lithium-ion battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, etc., which is not limited in the embodiments of the present application. The battery may be cylindrical, flat, rectangular or other shapes, etc., which is not limited in the embodiments of the present application.

[0044] At present, the back roller of the coating machine is prone to sticking, resulting in poor surface quality or sticking of the electrode during the actual production process, which affects the quality of the battery. Of course, there are also scraping devices that can scrape the back roller in the related technology, but the angle of the scraping part is not adjustable. After the scraping part is used for a period of time, the angle of the scraping part will change, and correspondingly, the gap between the scraping part and the back roller will change, thereby affecting the scraping effect of the scraper on the back roller.

[0045] In view of this, in order to solve the problem of poor cleaning effect of slurry particles attached to the back roller, some embodiments of the present application provide a back roller cleaning device, which includes a mounting frame, a scraper unit and an angle adjustment unit. The mounting frame is used to be installed on the coating equipment; the scraper unit includes a scraper for cleaning the back roller, and the scraper is arranged toward the outer peripheral surface of the back roller and is matched with the gap of the back roller; the angle adjustment unit is arranged between the mounting frame and the scraper unit, and the angle adjustment unit is used to adjust the angle between the scraper and the back roller.

[0046] In such a back roller cleaning device, an angle adjustment unit is provided between the mounting frame and the scraper unit. The angle adjustment unit can adjust the angle between the scraper in the scraper unit and the back roller, and according to the actual cleaning condition of the back roller, the scraper and the back roller are set at an upward angle and at a desired angle. The scraper can better scrape off the slurry particles and dust particles attached to the outer peripheral surface of the back roller, has a good cleaning effect on the back roller, meets the consistency requirements of slit coating, and realizes stable coating quality of the coating equipment.

[0047] The present application embodiment provides a back roller cleaning device, please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of a structure in which a back roller cleaning device provided in some embodiments of the present application is installed on a coating device; Figure 2 A schematic diagram of the structure of the back roller cleaning device and the back roller provided in some embodiments of the present application. The back roller cleaning device 100 is used in a coating device 200, and the back roller cleaning device 100 includes a mounting frame 10, a scraper unit 20 and an angle adjustment unit 30. The mounting frame 10 is used to be mounted on the coating device 200; the scraper unit 20 includes a scraper 21 for cleaning the back roller 201, and the scraper 21 is arranged toward the outer peripheral surface of the back roller 201 and has a clearance fit with the back roller 201; the angle adjustment unit 30 is arranged between the mounting frame 10 and the scraper unit 20, and the angle adjustment unit 30 is used to adjust the angle between the scraper 21 and the back roller 201.

[0048] The mounting frame 10 refers to a bearing structure for bearing the angle adjustment unit 30 and the scraper unit 20 . The mounting frame 10 is mounted on a frame body 202 of the coating device 200 .

[0049] The angle adjustment unit 30 is an angle adjustment mechanism connected between the mounting frame 10 and the scraper unit 20 . The angle adjustment unit 30 can drive the scraper unit 20 to rotate around the rotation direction of the back roller 201 , thereby adjusting the angle between the scraper 21 and the back roller 201 .

[0050] The scraper blade 21 refers to a scraper component that scrapes away particles attached to the surface of the back roller 201. The scraper blade 21 is a sheet-like structure. The scraper blade 21 can be made of a variety of materials. For example, the scraper blade 21 can be made of polypropylene (PP). Polypropylene is a non-toxic, odorless, tasteless milky white high-crystalline polymer with a density of 0.90-0.91g / cm3, which is one of the lightest varieties of all plastics. The scraper blade 21 made of PP material can scrape away particles attached to the back roller 201 without easily scratching the back roller 201, and can provide a certain degree of protection for the back roller 201.

[0051] The clearance fit between the scraper blade 21 and the back roller 201 refers to a certain gap between the scraper blade 21 and the outer circumference of the back roller 201, which can prevent the scraper blade 21 from interfering with the circumferential rotation of the back roller 201, that is, there will be no interference between the scraper blade 21 and the back roller 201. The gap between the scraper blade 21 and the back roller 201 can be between 8-15um. That is, the gap between the scraper blade 21 and the back roller 201 can be any value such as 8um, 9um, 10um, 11um, 12um, 13um, 14um or 15um. The gap between the scraper blade 21 and the back roller 201 can be checked by a feeler gauge to ensure that the gap between the scraper blade 21 and the back roller 201 meets 8-15um.

[0052] In the present scheme, the mounting frame 10 serves as a bearing component of the back roller cleaning device 100. The mounting frame 10 is installed and fixed on the coating equipment 200. The scraper unit 20 is arranged on the mounting frame 10. The scraper 21 in the scraper unit 20 is arranged toward the back roller 201, and can scrape off the slurry particles and dust particles attached to the back roller 201 to achieve the cleaning of the back roller 201. The scraper 21 and the outer peripheral surface of the back roller 201 are gap-matched. There is a gap between the scraper 21 and the outer peripheral surface of the back roller 201. The scraper 21 will not affect the circular runout of the back roller 201, thereby ensuring the coating quality of the back roller 201 on the pole piece. In addition, an angle adjustment unit 30 is provided between the mounting frame 10 and the scraper unit 20. The angle adjustment unit 30 can adjust the angle between the scraper 21 in the scraper unit 20 and the back roller 201, and according to the actual cleaning condition of the back roller 201, the scraper 21 and the back roller 201 are set at an upward angle and at a desired angle. The scraper 21 can better scrape off the slurry particles and dust particles attached to the outer peripheral surface of the back roller 201, and has a good cleaning effect on the back roller 201, meeting the consistency requirements of the slit coating, and achieving stable coating quality of the coating equipment 200.

[0053] According to some embodiments of this application, please combine Figure 2 and Figure 3 , Figure 2 A schematic diagram of the structure of the back roller cleaning device and the back roller provided in some embodiments of the present application; Figure 3The schematic diagram of the structure of the angle adjustment unit in the back roller cleaning device provided in some embodiments of the present application. The angle adjustment unit 30 includes a base 31, a rotating member 32 and a limiting assembly 33. The base 31 is connected to the mounting frame 10; the rotating member 32 is connected to the scraper unit 20, and the rotating member 32 is rotatably mounted on the base 31, and the rotation axis of the rotating member 32 is parallel to the rotation axis of the back roller 201; the limiting assembly 33 is arranged on the base 31, and the limiting assembly 33 is used to limit the rotation of the rotating member 32 relative to the base 31.

[0054] The base 31 refers to a base body for the rotating member 32 to be rotatably mounted. The rotating member 32 can be rotatably mounted on the base 31 through a hinge. The rotation axis of the rotating member 32 is parallel to the rotation axis of the back roller 201, which means that the axis of the hinge is parallel to the axis of the back roller 201. The rotating member 32 refers to a rotating component disposed between the scraper unit 20 and the base 31. The rotation of the rotating member 32 can drive the scraper unit 20 to rotate, thereby achieving an adjustable angle of the scraper 21. The rotating member 32 can be a frame 202, a swing rod or an arm structure.

[0055] The rotating member 32 is rotatably mounted on the base 31, and the rotation axis of the rotating member 32 is parallel to the rotation axis of the back roller 201. By rotating the rotating member 32, the scraper 21 can be driven to rotate, thereby adjusting the angle between the scraper 21 and the back roller 201 to meet the angle adjustment requirements of the scraper 21. When the angle of the scraper 21 is adjusted to the right position, the angle of the rotating member 32 is limited by the limiting assembly 33, so that the scraper 21 is maintained at the angle, so that the scraper 21 can clean and scrape the particles attached to the back roller 201 more stably.

[0056] According to some embodiments of this application, please refer to Figure 3 The limiting assembly 33 includes a first abutting member 331 and a second abutting member 332. The first abutting member 331 and the second abutting member 332 can be telescopically arranged on the base 31 and are located on opposite sides of the rotation direction of the rotating member 32. The first abutting member 331 and the second abutting member 332 are respectively used to abut on opposite sides of the rotation direction of the rotating member 32 to limit the rotation of the rotating member 32 relative to the base 31.

[0057] The structures of the first abutting member 331 and the second abutting member 332 may be the same or different, depending on the actual situation. The first abutting member 331 and the second abutting member 332 may be telescopic components such as cylinders, hydraulic cylinders, telescopic rods or adjusting screws.

[0058] For example, when the first supporting member 331 and the second supporting member 332 are cylinders, one end of the first supporting member 331 and the second supporting member 332 respectively abut on opposite sides of the rotating member 32. When the angle of the rotating member 32 needs to be adjusted, the driving rod of the first supporting member 331 is extended or shortened; correspondingly, the driving rod of the second supporting member 332 is shortened or extended, so that the rotating member 32 can rotate relative to the base 31, thereby realizing the angle adjustment of the scraper 21.

[0059] When the first supporting member 331 and the second supporting member 332 are telescopic rods, when the angle of the rotating member 32 needs to be adjusted, the length of the first supporting member 331 is extended or shortened; correspondingly, the length of the second supporting member 332 is shortened or extended, so that the rotating member 32 can rotate relative to the base 31, thereby realizing the angle adjustment of the scraper 21.

[0060] By respectively abutting one end of the first abutting member 331 and the second abutting member 332 on the opposite sides of the rotating member 32, the angle of the rotating member 32 can be fixed, and the scraper blade 21 can relatively stably scrape and clean the particles attached to the back roller 201. The scraper blade 21 is not easily affected by the reaction force of the particles deposited on the back roller 201 and swings to the side away from the back roller 201, thereby maintaining a fixed gap between the scraper blade 21 and the back roller 201, thereby ensuring the cleaning effect of the scraper blade 21 on the particles on the back roller 201.

[0061] According to some embodiments of this application, please refer to Figure 3 The first supporting member 331 is threadedly matched with the base 31 , and the second supporting member 332 is threadedly matched with the base 31 .

[0062] The first abutting member 331 and the second abutting member 332 are both threadedly matched with the base 31 , and the first abutting member 331 and the second abutting member 332 are both adjusting screws.

[0063] Of course, it is not limited thereto, the first abutting member 331 is threadedly engaged with the base 31; and / or, the second abutting member 332 is threadedly engaged with the base 31, that is, in addition to the first abutting member 331 and the second abutting member 332 both being threadedly engaged with the base 31, the first abutting member 331 can also be threadedly engaged with the base 31, and the second abutting member 332 can not be threadedly engaged with the base 31, that is, the first abutting member 331 and the second abutting member 332 can be different structures, the first abutting member 331 can be a screw structure, and the second abutting member 332 can be other telescopic structures, such as a telescopic rod or a cylinder. Similarly, the first abutting member 331 can not be threadedly engaged with the base 31, the second abutting member 332 can be threadedly engaged with the base 31, the first abutting member 331 can be other telescopic structures, such as a telescopic rod or a cylinder, and the second abutting member 332 can be a screw structure.

[0064] By threading the first supporting member 331 with the base 31 and the second supporting member 332 with the base 31, when the angle of the scraper 21 needs to be adjusted, it is only necessary to rotate the first supporting member 331 and the second supporting member 332 accordingly to extend or shorten the length of the first supporting member 331 and the second supporting member 332. After the first supporting member 331 and the second supporting member 332 are rotated, the angle of the rotating member 32 is automatically fixed to maintain the angle of the scraper 21. The angle adjustment of the scraper 21 is convenient and quick, the structure is simple, and it is easy to implement.

[0065] According to some embodiments of this application, please continue to refer to Figure 3 The rotating member 32 includes a first rotating arm 321 and a second rotating arm 322, one end of the first rotating arm 321 is rotatably connected to the base 31, the other end of the first rotating arm 321 is rotatably connected to one end of the second rotating arm 322, and the end of the second rotating arm 322 facing away from the first rotating arm 321 is connected to the scraper unit 20; a first locking member 323 is provided at the rotating axis of the first rotating arm 321 and the second rotating arm 322, and the first locking member 323 is used to limit the relative rotation of the first rotating arm 321 and the second rotating arm 322.

[0066] A swing arm mechanism is formed between the first rotating arm 321 and the second rotating arm 322 . The length of the second rotating arm 322 may be equal to or different from the length of the first rotating arm 321 .

[0067] In this embodiment, the length of the second rotating arm 322 is smaller than that of the first rotating arm 321 , and the second rotating arm 322 can rotate relative to the first rotating arm 321 to achieve fine adjustment of the angle of the scraper 21 or disassembly of the scraper 21 .

[0068] The first locking member 323 can be a screw, which is inserted at the intersection of the first rotating arm 321 and the second rotating arm 322. The second rotating arm 322 is correspondingly provided with an arc groove for the screw to abut. The arc groove extends along the swinging direction of the second rotating arm 322. The screw abuts against the arc groove to fix and lock the first rotating arm 321 and the second rotating arm 322.

[0069] By adopting the rotating member 32 as the first rotating arm 321 and the second rotating arm 322, the second rotating arm 322 can rotate relative to the first rotating arm 321. When it is necessary to fine-tune the angle of the scraper blade 21 or remove the scraper blade 21, the first locking member 323 can be directly loosened to allow the second rotating arm 322 to rotate relative to the first rotating arm 321. The distance between the scraper blade 21 and the back roller 201 is increased, and the scraper blade 21 can be removed without adjusting the first abutting member 331 and the second abutting member 332. The adjustment is more convenient, and the workload when replacing the scraper blade 21 is reduced.

[0070] According to some embodiments of this application, please continue to refer to Figure 3 A reinforcement member 324 is provided between the first rotating arm 321 and the second rotating arm 322, one end of the reinforcement member 324 is hinged to the second rotating arm 322, the other end of the reinforcement member 324 is provided with a first elongated hole 3241, and the other end of the reinforcement member 324 is threadedly connected to the first rotating arm 321 through the first elongated hole 3241 provided by the second locking member.

[0071] The reinforcement member 324 is a rod structure. When the first rotating arm 321 and the second rotating arm 322 rotate, the first elongated hole 3241 can be penetrated by the second locking member to lock and fix the first rotating arm 321 and the second rotating arm 322 .

[0072] The locking stability of the first rotating arm 321 and the second rotating arm 322 is not high when only the first locking piece 323 is used to lock the first rotating arm 321 and the second rotating arm 322. By providing a reinforcement piece 324 between the first rotating arm 321 and the second rotating arm 322, the reinforcement piece 324 is passed through the first elongated hole 3241 through the second locking piece and is screwed to the first rotating arm 321. The angle of the first rotating arm 321 and the second rotating arm 322 can be fixed, making the angle of the first rotating arm 321 and the second rotating arm 322 more stable. When it is necessary to fine-tune the angle of the scraper blade 21, it is only necessary to loosen the second locking piece and the first locking piece 323 to fine-tune the angle of the scraper blade 21. The operation is convenient and quick.

[0073] According to some embodiments of this application, please refer to Figure 2 The number of the angle adjustment units 30 is set to be multiple, and the multiple angle adjustment units 30 are distributed on the mounting frame 10 at intervals along the first direction X, and the first direction X is parallel to the axial direction of the back roller 201.

[0074] The number of the angle adjustment units 30 can be two, three or four, etc., and the number of the angle adjustment units 30 can be determined according to the actual situation. In this embodiment, the number of the angle adjustment units 30 is three, and the three angle adjustment units 30 are evenly spaced and distributed on the mounting frame 10.

[0075] By setting up multiple angle adjustment units 30, multiple angle adjustment units 30 can support the scraper unit 20, so that there are multiple supporting points between the scraper unit 20 and the mounting frame 10. During the process of the scraper 21 cleaning the back roller 201, the reaction force borne by the scraper 21 can be transmitted to the mounting frame 10 more evenly, reducing the risk of uneven gap between the scraper 21 and the back roller 201 due to uneven force transmission, and the cleaning effect on the back roller 201 is better.

[0076] According to some embodiments of this application, please refer to Figure 4The scraper unit 20 includes a base 22, a cover plate 23 and a first fastener 24. The base 22 is connected to the angle adjustment unit 30. The cover plate 23 is covered on the base 22. The scraper 21 is arranged between the base 22 and the cover plate 23. The cover plate 23 and the base 22 are pressed together to clamp the scraper 21. The first fastener 24 is arranged on the cover plate 23. The first fastener 24 is used to fasten the cover plate 23 and the base 22 so that the cover plate 23 and the base 22 clamp the scraper 21.

[0077] The base 22 refers to a seat body that provides a bearing function for the blade, and the cover plate 23 and the base 22 provide a clamping function for the scraper 21. There are many ways to clamp the scraper 21 between the cover plate 23 and the base 22. For example, the cover plate 23 can be pressed down by a clamping cylinder, and pressure can be applied to the base 22. Under the relationship between the action force and the reaction force, the cover plate 23 and the base 22 clamp and fix the scraper 21.

[0078] Of course, the scraper blade 21 can also be clamped and fixed by the first fastener 24, which can be a screw. The first fastener 24 passes through the cover plate 23 and is screwed and fixed to the corresponding screw hole on the base 22. The first fastener 24 will be misaligned with the scraper blade 21, and the first fastener 24 will not interfere with the scraper blade 21.

[0079] The base 22 may be provided with a first limiting portion, which is used to abut against the side of the scraper 21 away from the back roller 201 to limit the scraper 21 from moving toward the side away from the back roller 201. The first limiting portion may be a step structure or a limiting groove structure.

[0080] The scraper unit 20 includes a base 22 and a cover plate 23, wherein the cover plate 23 is covered on the base 22, and the scraper 21 is arranged between the base 22 and the cover plate 23. The first fastener 24 applies a fastening force to the cover plate 23 and the base 22 to clamp the scraper 21 between the cover plate 23 and the base 22, thereby clamping and fixing the scraper 21, and the installation stability of the scraper 21 is high.

[0081] When the scraper blade 21 needs to be replaced, the scraper blade 21 can be replaced by simply loosening the first fastener 24 . The scraper blade 21 can be easily and quickly disassembled and assembled.

[0082] According to some embodiments of this application, please continue to refer to Figure 4 The scraper unit 20 further includes a dust box 25 , which is disposed on a side of the cover plate 23 away from the base 22 and connected to the cover plate 23 , and is used to collect dust particles scraped by the scraper 21 .

[0083] The dust box 25 is a dust collecting component that can collect and temporarily store dust particles scraped by the scraper 21. The dust box 25 is a box structure, and the dust box 25 is extended along the length direction or extension direction of the scraper 21, and the two ends of the dust box 25 in the length direction exceed the two ends of the scraper 21 in the length direction.

[0084] After the dust box 25 is installed on the cover plate 23, the dust box 25 is oriented in the same direction as the scraper 21, and is also tilted upward, that is, the dust box 25 is arranged at an elevation. The dust box 25 is open to one side of the scraper 21, and the opening allows dust particles to enter the dust box 25 under the action of gravity, so as to complete the collection of dust particles. The top of the dust box 25 is open, and the opening allows external personnel to observe the accumulation of dust particles in the dust box 25 at any time, so as to regularly clean the accumulated dust particles.

[0085] The dust box 25 and the cover plate 23 are detachably connected. There are many ways to connect the dust box 25 and the cover plate 23. For example, the dust box 25 and the cover plate 23 can be connected by screws, snap-fitting or magnetic connection.

[0086] Optionally, the dust box 25 and the cover plate 23 are connected by a plurality of screws, and the plurality of screws are spaced apart along the length direction of the dust box 25. When the dust box 25 needs to be removed, the dust box 25 and the cover plate 23 can be separated by only loosening or removing the screws.

[0087] By setting the dust box 25 on the cover plate 23, the dust particles scraped off the back roller 201 by the scraper 21 will enter the dust box 25 on the rear side of the scraper 21. The dust box 25 can collect and temporarily store the dust particles, thereby improving the cleanliness of the back roller cleaning device 100. With the setting of the dust box 25, it is only necessary to clean the dust particles in the dust box 25 regularly, which reduces the workload of the staff in cleaning the dust particles and is more time-saving and labor-saving.

[0088] According to some embodiments of this application, please refer to Figure 2 The mounting frame 10 includes a first bracket 11 and a second bracket 12 . The first bracket 11 is used to connect with the coating device 200 . The second bracket 12 is positionally adjustable on the first bracket 11 , and the angle adjustment unit 30 is disposed on the second bracket 12 .

[0089] The first bracket 11 is a frame structure on the mounting frame 10 connected to the coating device 200 , and the second bracket 12 is a frame structure for the angle adjustment unit 30 and the scraper unit 20 to be installed.

[0090] The second bracket 12 is adjustable in position on the first bracket 11, that is, the second bracket 12 can move relative to the first bracket 11, so as to adjust the installation position of the scraper 21 in the scraper unit 20 to adapt to the position adjustment of the scraper 21 and the back roller 201. The second bracket 12 can be adjustable in position relative to the first bracket 11 in one direction or in multiple directions, depending on the position adjustment requirements of the scraper 21.

[0091] The mounting frame 10 includes a first bracket 11 and a second bracket 12. The second bracket 12 is adjustably disposed on the first bracket 11. By adjusting the position of the second bracket 12 relative to the first bracket 11, the relative position of the scraper blade 21 and the back roller 201 can be adjusted accordingly to meet the installation requirements of the scraper blade 21 position, and can be adapted to back rollers 201 of different sizes.

[0092] According to some embodiments of this application, please refer to Figure 2 The first bracket 11 is provided with a plurality of first connection holes 111 at intervals along the second direction Y, and the second direction Y is the length direction of the first bracket 11; the second bracket 12 is provided with a second connection hole 121; the second fastener is passed through the second connection hole 121, and the second fastener can be optionally passed through the first connection hole 111 to fasten the second bracket 12 to the first bracket 11.

[0093] The second direction Y is the distribution direction of the back roller cleaning device 100 and the back roller 201 . By adjusting the position of the second bracket 12 in the second direction Y, the distance between the scraper 21 and the back roller 201 can be adjusted accordingly.

[0094] By providing a plurality of first connecting holes 111 along the second direction Y on the first bracket 11, and then the second fastener is passed through the second connecting hole 121 of the second bracket 12 and one of the plurality of first connecting holes 111 is selected for connection, the position of the second bracket 12 in the second direction Y can be adjusted accordingly, thereby adjusting the distance between the scraper blade 21 and the back roller 201, thereby meeting the position adjustment requirements of the scraper blade 21.

[0095] According to some embodiments of this application, please refer to Figure 2 There are multiple second connection holes 121, and the multiple second connection holes 121 are spaced apart on the second bracket 12 along the third direction Z. The second fastener can selectively penetrate the second connection hole 121 and the first connection hole 111, and the third direction Z is perpendicular to the second direction Y.

[0096] The first direction X, the second direction Y and the third direction Z are perpendicular to each other. The third direction Z may be a vertical direction. There are two second fasteners. The two second fasteners are passed through the second connection holes 121 and then screwed to the first connection holes 111 .

[0097] By setting the number of the second connecting holes 121 to be multiple, the second fastener can select any one of the multiple second connecting holes 121 to be screwed to the first connecting hole 111 on the first bracket 11, so that the position of the second bracket 12 relative to the first bracket 11 in the third direction Z can be adjusted, thereby realizing the position adjustment of the scraper blade 21 in the third direction Z, and the position adjustment range of the scraper blade 21 is wider.

[0098] The embodiment of the present application further provides a coating device 200 , and the coating device 200 includes the back roller cleaning device 100 of any of the aforementioned embodiments.

[0099] The embodiment of the present application also provides a battery manufacturing device, which includes the aforementioned coating device 200.

[0100] In some embodiments, please refer to Figures 1 to 4 The back roller cleaning device 100 includes a mounting frame 10, a scraper unit 20 and an angle adjustment unit 30. The mounting frame 10 is used to be mounted on the coating device 200. The scraper unit 20 includes a scraper 21 for cleaning the back roller 201. The scraper 21 is arranged toward the outer peripheral surface of the back roller 201 and is in clearance with the back roller 201. The angle adjustment unit 30 is arranged between the mounting frame 10 and the scraper unit 20. The angle adjustment unit 30 is used to adjust the angle between the scraper 21 and the back roller 201. The angle adjustment unit 30 includes a base 31, a rotating member 32 and a limiting assembly 33. The base 31 is connected to the mounting frame 10. The rotating member 32 is connected to the scraper unit 20. The rotating member 32 is rotatably mounted on the base 31. The rotation axis of the rotating member 32 is parallel to the rotation axis of the back roller 201. The limiting assembly 33 is arranged on the base 31. The limiting assembly 33 is used to limit the rotation of the rotating member 32 relative to the base 31.

[0101] An angle adjustment unit 30 is provided between the mounting frame 10 and the scraper unit 20. The angle adjustment unit 30 can adjust the angle between the scraper 21 in the scraper unit 20 and the back roller 201, and according to the actual cleaning condition of the back roller 201, the scraper 21 and the back roller 201 are set at an elevation angle and at a desired angle. The scraper 21 can better scrape the slurry particles and dust particles attached to the outer peripheral surface of the back roller 201, and has a good cleaning effect on the back roller 201, meeting the consistency requirements of the slit coating, and achieving stable coating quality of the coating device 200. The rotation axis of the rotating member 32 is parallel to the rotation axis of the back roller 201. By rotating the rotating member 32, the scraper 21 can be driven to rotate, thereby adjusting the angle between the scraper 21 and the back roller 201 to meet the angle adjustment requirements of the scraper 21. When the angle of the scraper 21 is adjusted to the desired position, the limiting assembly 33 limits the angle of the rotating member 32 to maintain the scraper 21 at the desired angle, so that the scraper 21 can clean and scrape particles attached to the back roller 201 more stably.

[0102] In some embodiments, the limiting assembly 33 includes a first abutting member 331 and a second abutting member 332, both of which are telescopically disposed on the base 31 and located on opposite sides of the rotation direction of the rotating member 32, and the first abutting member 331 and the second abutting member 332 are respectively used to abut on opposite sides of the rotation direction of the rotating member 32 to limit the rotation of the rotating member 32 relative to the base 31. The first abutting member 331 is threadedly engaged with the base 31, and the second abutting member 332 is threadedly engaged with the base 31.

[0103] By respectively abutting one end of the first abutting member 331 and the second abutting member 332 on the opposite sides of the rotating member 32, the angle of the rotating member 32 can be fixed, and the scraper blade 21 can relatively stably scrape and clean the particles attached to the back roller 201. The scraper blade 21 is not easily affected by the reaction force of the particles deposited on the back roller 201 and swings to the side away from the back roller 201, thereby maintaining a fixed gap between the scraper blade 21 and the back roller 201, thereby ensuring the cleaning effect of the scraper blade 21 on the particles on the back roller 201. By threading the first supporting member 331 with the base 31 and the second supporting member 332 with the base 31, when the angle of the scraper 21 needs to be adjusted, it is only necessary to rotate the first supporting member 331 and the second supporting member 332 accordingly to extend or shorten the length of the first supporting member 331 and the second supporting member 332. After the first supporting member 331 and the second supporting member 332 are rotated, the angle of the rotating member 32 is automatically fixed to maintain the angle of the scraper 21. The angle adjustment of the scraper 21 is convenient and quick, the structure is simple, and it is easy to implement.

[0104] In some embodiments, the rotating member 32 includes a first rotating arm 321 and a second rotating arm 322, one end of the first rotating arm 321 is rotatably connected to the base 31, the other end of the first rotating arm 321 is rotatably connected to one end of the second rotating arm 322, and the end of the second rotating arm 322 away from the first rotating arm 321 is connected to the scraper unit 20; a first locking member 323 is provided at the rotating axis of the first rotating arm 321 and the second rotating arm 322, and the first locking member 323 is used to limit the relative rotation of the first rotating arm 321 and the second rotating arm 322. A reinforcing member 324 is provided between the first rotating arm 321 and the second rotating arm 322, one end of the reinforcing member 324 is hinged to the second rotating arm 322, and the other end of the reinforcing member 324 is provided with a first elongated hole 3241, and the other end of the reinforcing member 324 is threadedly connected to the first rotating arm 321 through the second locking member through the first elongated hole 3241.

[0105] The second rotating arm 322 can rotate relative to the first rotating arm 321. When it is necessary to fine-tune the angle of the scraper blade 21 or remove the scraper blade 21, the first locking piece 323 can be directly loosened to allow the second rotating arm 322 to rotate relative to the first rotating arm 321. The distance between the scraper blade 21 and the back roller 201 is increased, and the scraper blade 21 can be removed without adjusting the first abutting piece 331 and the second abutting piece 332. The adjustment is more convenient, which reduces the workload when replacing the scraper blade 21. By providing a reinforcement piece 324 between the first rotating arm 321 and the second rotating arm 322, the reinforcement piece 324 is passed through the first elongated hole 3241 through the second locking piece and then screwed to the first rotating arm 321, so that the angle of the first rotating arm 321 and the second rotating arm 322 can be fixed, so that the angle of the first rotating arm 321 and the second rotating arm 322 is more stable. When it is necessary to fine-tune the angle of the scraper 21, it is only necessary to loosen the second locking piece and the first locking piece 323 to fine-tune the angle of the scraper 21, and the operation is convenient and quick.

[0106] The number of the angle adjustment units 30 is set to three, and the three angle adjustment units 30 are distributed on the mounting frame 10 at intervals along a first direction X, and the first direction X is parallel to the axial direction of the back roller 201 .

[0107] In some embodiments, the scraper unit 20 includes a base 22, a cover plate 23 and a first fastener 24, the base 22 is connected to the angle adjustment unit 30; the cover plate 23 is covered on the base 22, and the scraper 21 is arranged between the base 22 and the cover plate 23; the first fastener 24 is arranged on the cover plate 23, and the first fastener 24 is used to fasten the cover plate 23 and the base 22 so that the cover plate 23 and the base 22 clamp the scraper 21. The scraper unit 20 also includes a dust box 25, which is arranged on a side of the cover plate 23 away from the base 22 and connected to the cover plate 23, and the dust box 25 is used to collect dust particles scraped by the scraper 21.

[0108] The scraper blade 21 is arranged between the base 22 and the cover plate 23. The first fastener 24 applies a fastening force to the cover plate 23 and the base 22, and the cover plate 23 and the base 22 clamp the scraper blade 21, so as to clamp and fix the scraper blade 21. The installation stability of the scraper blade 21 is high. When the scraper blade 21 needs to be replaced, it is only necessary to loosen the first fastener 24 to replace the scraper blade 21. The scraper blade 21 is convenient and quick to disassemble and assemble. The dust particles scraped off the back roller 201 by the scraper blade 21 will enter the dust box 25 on the rear side of the scraper blade 21. The dust box 25 can collect and temporarily store the dust particles, thereby improving the cleanliness of the back roller cleaning device 100. With the setting of the dust box 25, it is only necessary to clean the dust particles in the dust box 25 regularly, which reduces the workload of the staff in cleaning the dust particles, and is more time-saving and labor-saving to use.

[0109] In some embodiments, the mounting frame 10 includes a first bracket 11 and a second bracket 12, wherein the first bracket 11 is used to connect with the coating device 200; the second bracket 12 is positionally adjustable and mounted on the first bracket 11, and the angle adjustment unit 30 is disposed on the second bracket 12. The first bracket 11 is provided with a plurality of first connection holes 111 at intervals along the second direction Y, wherein the second direction Y is the length direction of the first bracket 11; the second bracket 12 is provided with a second connection hole 121; the second fastener is passed through the second connection hole 121, and the second fastener can be selectively passed through the first connection hole 111 to fasten the second bracket 12 to the first bracket 11. There are a plurality of second connection holes 121, and the plurality of second connection holes 121 are distributed at intervals on the second bracket 12 along the third direction Z, and the second fastener can be selectively passed through the second connection hole 121 and the first connection hole 111, wherein the third direction Z is perpendicular to the second direction Y.

[0110] The second bracket 12 is adjustable in position on the first bracket 11, and the position of the second bracket 12 relative to the first bracket 11 is adjusted, so that the relative position of the scraper 21 and the back roller 201 can be adjusted accordingly, so as to meet the installation requirements of the scraper 21 position, and can be adapted to back rollers 201 of different sizes. By providing a plurality of first connection holes 111 along the second direction Y on the first bracket 11, the second fastener is inserted through the second connection holes 121 of the second bracket 12 and then selects one of the plurality of first connection holes 111 for connection, so that the position of the second bracket 12 in the second direction Y can be adjusted accordingly, thereby adjusting the distance between the scraper 21 and the back roller 201, and meeting the position adjustment requirements of the scraper 21. The second fastener can select any one of the plurality of second connection holes 121 to be screwed with the first connection hole 111 on the first bracket 11, so as to adjust the position of the second bracket 12 relative to the first bracket 11 in the third direction Z, so as to achieve the position adjustment of the scraper 21 in the third direction Z, and the position adjustment range of the scraper 21 is wider.

[0111] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A back roller cleaning device for coating equipment, characterized in that: include: The mounting frame comprises a first bracket and a second bracket, wherein the first bracket is used to be connected to the coating device, and the second bracket is adjustably mounted on the first bracket; A scraper unit, comprising a scraper for cleaning the back roller, wherein the scraper is arranged toward the outer peripheral surface of the back roller and is in gap fit with the back roller; An angle adjustment unit is disposed between the second bracket and the scraper unit, and the angle adjustment unit is used to adjust the angle between the scraper and the back roller.

2. The back roller cleaning device according to claim 1, characterized in that: The angle adjustment unit comprises: a base, connected to the second bracket; A rotating member connected to the scraper unit, the rotating member is rotatably mounted on the base, and the rotating axis of the rotating member is parallel to the rotating axis of the back roller; A limit assembly is arranged on the base, and the limit assembly is used to limit the rotation of the rotating member relative to the base.

3. The back roller cleaning device according to claim 2, characterized in that: The limiting assembly includes a first abutment and a second abutment, both of which are telescopically arranged on the base and located on opposite sides of the rotation direction of the rotating member, and the first abutment and the second abutment are respectively used to abut on opposite sides of the rotation direction of the rotating member to limit the rotation of the rotating member relative to the base.

4. The back roller cleaning device according to claim 3, characterized in that: The first abutment is threadedly matched with the base, and the second abutment is threadedly matched with the base.

5. The back roller cleaning device according to claim 2, characterized in that: The rotating member comprises a first rotating arm and a second rotating arm, one end of the first rotating arm is rotatably connected to the base, the other end of the first rotating arm is rotatably connected to one end of the second rotating arm, and one end of the second rotating arm facing away from the first rotating arm is connected to the scraper unit; A first locking member is disposed at the rotation axes of the first rotating arm and the second rotating arm, and the first locking member is used to limit the relative rotation of the first rotating arm and the second rotating arm.

6. The back roller cleaning device according to claim 5, characterized in that: A reinforcement is provided between the first rotating arm and the second rotating arm, one end of the reinforcement is hinged to the second rotating arm, the other end of the reinforcement is provided with a first elongated hole, and the other end of the reinforcement is threadedly connected to the first rotating arm through the first elongated hole via a second locking member.

7. The back roller cleaning device according to claim 1, characterized in that: The number of the angle adjustment units is set to be multiple, and the multiple angle adjustment units are distributed on the mounting frame at intervals along a first direction, and the first direction is parallel to the axial direction of the back roller.

8. The back roller cleaning device according to claim 1, characterized in that: The scraper unit also includes: A base connected to the angle adjustment unit; A cover plate, which is arranged on the base, and the scraper is arranged between the base and the cover plate, and the cover plate and the base are pressed and matched to clamp the scraper; A first fastener is disposed on the cover plate, and is used to fasten the cover plate and the base so that the cover plate and the base clamp the scraper.

9. The back roller cleaning device according to claim 8, characterized in that: The scraper unit also includes: A dust box is arranged on a side of the cover plate away from the base and connected to the cover plate, and the dust box is used to collect dust particles scraped by the scraper.

10. The back roller cleaning device according to claim 1, characterized in that: A plurality of first connection holes are arranged on the first bracket at intervals along a second direction, and the second direction is the length direction of the first bracket; A second bracket is provided with a second connecting hole; The second fastener is inserted into the second connection hole. The second fastener can be selectively inserted into the first connection hole to fasten the second bracket to the first bracket.

11. The back roller cleaning device according to claim 10, characterized in that: There are multiple second connection holes, which are spaced apart on the second bracket along a third direction. The second fastener can be selectively passed through the second connection hole and the first connection hole, and the third direction is perpendicular to the second direction.

12. A coating device, characterized in that: The invention comprises a back roller cleaning device according to any one of claims 1 to 11.

13. A battery manufacturing device, characterized in that: Comprising a coating apparatus according to claim 12.

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