Coating roller cleaning mechanism and pole piece coating equipment

Abstract

The utility model relates to a coating roller cleaning mechanism and pole piece coating equipment. The coating roller cleaning mechanism comprises an unwinding device, a winding device, cleaning cloth, a cleaning agent trough, a driving device, a first pressing roller and a second pressing roller, and the cleaning cloth sequentially passes through the cleaning agent trough, the first pressing roller and the second pressing roller from the unwinding device and then is wound by the winding device. The first pressing roller and the second pressing roller are arranged in a spaced mode, and the driving device is used for driving the first pressing roller and / or the second pressing roller to move so that the cleaning cloth located between the first pressing roller and the second pressing roller can be close to or away from a coating roller. According to the scheme provided by the invention, the coating roller can be automatically cleaned, the labor intensity is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of lithium battery processing technology, and in particular to a coating roller cleaning mechanism and an electrode coating equipment. Background Technology

[0002] Lithium-ion batteries have become core energy storage devices in new energy and other fields due to their advantages such as environmental friendliness, high energy density, and long cycle life. The coating process for lithium-ion battery electrodes is a crucial step in lithium-ion battery production. When the coating machine applies the slurry to the electrodes, the gap between the coating die and the coating roller is very small. If foreign matter adheres to the coating roller, it will affect the production quality of the electrodes; therefore, the coating roller needs to be cleaned.

[0003] In related technologies, cleaning of coating rollers mostly relies on manual wiping, which requires stopping the machine during cleaning. This results in high labor intensity for operators and affects production efficiency. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides a coating roller cleaning mechanism and electrode coating equipment, which can automatically clean the coating roller, reduce labor intensity, and improve production efficiency.

[0005] The first aspect of this application provides a coating roller cleaning mechanism, comprising: an unwinding device, a winding device, a cleaning cloth, a cleaning agent trough, a driving device, a first pressure roller, and a second pressure roller. The cleaning cloth is sequentially passed from the unwinding device through the cleaning agent trough, the first pressure roller, and the second pressure roller before being wound up by the winding device. The first pressure roller and the second pressure roller are spaced apart. The driving device is used to drive the first pressure roller and / or the second pressure roller to move, so that the cleaning cloth located between the first pressure roller and the second pressure roller moves closer to or away from the coating roller.

[0006] Furthermore, the driving device includes a cylinder and a connecting member, the piston rod of the cylinder is connected to the connecting member, and the connecting member is connected to the first pressure roller and / or the second pressure roller.

[0007] Furthermore, the above-mentioned coating roller cleaning mechanism also includes a cleaning dosage cup connected to the cleaning agent tank, and the liquid outlet end of the cleaning dosage cup is provided with a switch valve.

[0008] Furthermore, the cleaning agent tank is equipped with an adjusting roller, and the coating roller cleaning mechanism also includes an adjusting device for adjusting the height of the adjusting roller, and the cleaning cloth passes under the adjusting roller.

[0009] Furthermore, the adjusting device includes a fixed block, a threaded rod, a bracket, and a slider. The threaded rod passes through the fixed block and is threadedly connected to the fixed block. The end of the threaded rod is rotatably connected to the slider. The slider is slidably connected to the bracket in the vertical direction. The adjusting roller is rotatably disposed on the slider.

[0010] Furthermore, the cleaning cloth is made of non-woven fabric.

[0011] Furthermore, the coating roller cleaning mechanism also includes a floating roller disposed on the transport path of the cleaning cloth.

[0012] Furthermore, the coating roller cleaning mechanism also includes multiple rollers disposed on the transport path of the cleaning cloth.

[0013] Furthermore, the unwinding device includes an unwinding motor and an unwinding roller connected to the unwinding motor, and the winding device includes a winding motor and a winding roller connected to the winding motor.

[0014] A second aspect of this application provides an electrode coating apparatus, comprising: a frame, a coating roller, and a coating roller cleaning mechanism as described in any of the preceding claims, wherein the coating roller cleaning mechanism and the coating roller are disposed opposite to each other on the frame.

[0015] The technical solution provided in this application can include the following beneficial effects: Automatic supply and recovery of the cleaning cloth through an unwinding device and a rewinding device can form a continuous cleaning process. A cleaning agent trough saturates the cleaning cloth with cleaning agent to enhance the cleaning effect. The spaced arrangement of the first and second pressure rollers forms a contact area between the cleaning cloth and the coating roller. The drive device adjusts the position of the first and / or second pressure rollers to allow the cleaning cloth to contact or separate from the coating roller. When the cleaning cloth contacts the coating roller, it wipes away foreign matter from the surface of the coating roller, and can clean the coating roller simultaneously with coating the electrode sheet. Therefore, the above-mentioned coating roller cleaning mechanism can automatically clean the coating roller without stopping the machine, reducing labor intensity and improving production efficiency.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0018] Figure 1 This is a schematic diagram of the structure of the electrode coating equipment shown in the embodiments of this application;

[0019] Figure 2 This is a cross-sectional schematic diagram of the electrode coating equipment shown in the embodiments of this application;

[0020] Figure 3 This is a schematic diagram of the coating roller cleaning mechanism shown in the embodiments of this application;

[0021] Figure 4 This is another structural schematic diagram of the coating roller cleaning mechanism shown in the embodiments of this application.

[0022] Figure label:

[0023] 1-Frame, 2-Coating roller, 3-Coating roller cleaning mechanism, 31-Unwinding device, 32-Rewinding device, 33-Cleaning cloth, 34-Cleaning agent trough, 35-Drive device, 351-Cylinder, 352-Connector, 36-First pressure roller, 37-Second pressure roller, 38-Cleaning dosage cup, 39-Adjusting roller, 310-Adjusting device, 311-Fixing block, 312-Threaded rod, 313-Bracket, 314-Slider, 320-Floating roller, 330-Passing roller. Detailed Implementation

[0024] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0025] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0029] like Figures 1 to 4 As shown, this application embodiment provides an electrode coating equipment, including a frame 1, a coating roller 2, and a coating roller cleaning mechanism 3. The coating roller cleaning mechanism 3 and the coating roller 2 are disposed opposite to each other on the frame 1. The coating roller 2 can rotate relative to the frame 1. The coating roller cleaning mechanism 3 is located on the side of the coating roller 2 that is not in contact with the electrode, that is, the coating roller cleaning mechanism 3 and the coating die are located on opposite sides of the coating roller 2. During the coating process of the coating die on the electrode, the coating roller cleaning mechanism 3 can also clean the coating roller 2, realizing non-stop operation for cleaning the coating roller 2.

[0030] Among them, such as Figures 2 to 4 As shown, the coating roller cleaning mechanism 3 includes an unwinding device 31, a winding device 32, a cleaning cloth 33, a cleaning agent trough 34, a driving device 35, a first pressure roller 36, and a second pressure roller 37. The cleaning cloth 33 passes sequentially from the unwinding device 31 through the cleaning agent trough 34, the first pressure roller 36, and the second pressure roller 37 before being wound up by the winding device 32. The first pressure roller 36 and the second pressure roller 37 are spaced apart. The driving device 35 is used to drive the first pressure roller 36 and / or the second pressure roller 37 to move, thereby allowing the cleaning cloth 33 between the first pressure roller 36 and the second pressure roller 37 to move closer to or further away from the coating roller 2.

[0031] The unwinding device 31 stores and releases the cleaning cloth 33, continuously supplying cleaning medium, while the winding device 32 recycles the used cleaning cloth 33. The cleaning agent trough 34 is a container for holding cleaning agent, which can impregnate the cleaning cloth 33 to enhance the cleaning effect. The first pressure roller 36 and the second pressure roller 37 form a cleaning contact area between the cleaning cloth 33 and the coating roller 2. The drive device 35 controls the contact or separation of the cleaning cloth 33 in the cleaning contact area from the coating roller 2 by adjusting the position of the pressure rollers.

[0032] Specifically, the cleaning cloth 33 is continuously conveyed under the drive of the unwinding device 31 and the winding device 32, and absorbs the cleaning agent as it passes through the cleaning agent trough 34, becoming wet. The cleaning cloth 33 between the first pressure roller 36 and the second pressure roller 37 is the cleaning contact area. The driving device 35 changes the distance between the first pressure roller 36 and / or the second pressure roller 37 and the coating roller 2, so that the cleaning contact area contacts or separates from the surface of the coating roller 2. When cleaning is required, the driving device 35 pushes the corresponding pressure roller to move so that the cleaning cloth 33 is in close contact with the surface of the coating roller 2. The wiping action can be completed while the coating roller 2 is rotating, without stopping the machine. After cleaning, the driving device 35 drives the corresponding pressure roller to reset, so that the cleaning cloth 33 is removed from the surface of the coating roller 2. The winding device 32 simultaneously recovers the contaminated cleaning cloth 33, and the unwinding device 31 replenishes a new cleaning cloth 33.

[0033] Traditional manual cleaning requires machine shutdown, resulting in low production efficiency and safety hazards. The above-mentioned technical solution can achieve automated online cleaning of coating roller 2 without machine shutdown, reducing labor intensity and improving production efficiency.

[0034] In some embodiments, the drive device 35 may drive only the first pressure roller 36 or only the second pressure roller 37 to control the contact or separation of the cleaning cloth 33 from the coating roller 2. In other embodiments, the drive device 35 may drive both the first pressure roller 36 and the second pressure roller 37 to control the contact or separation of the cleaning cloth 33 from the coating roller 2.

[0035] In some embodiments, such as Figures 2 to 4 As shown, the drive device 35 includes a cylinder 351 and a connector 352. The piston rod of the cylinder 351 is connected to the connector 352. The cylinder 351 can be fixed on the frame 1. The connector 352 is rotatably connected to the end of the first pressure roller 36 and the end of the second pressure roller 37, respectively. Specifically, a drive device 35 is provided at both ends of the first pressure roller 36 and the second pressure roller 37. The cylinder 351 controls the movement of the first pressure roller 36 and the second pressure roller 37 closer to or further away from the coating roller 2 through the connector 352. The reciprocating motion of the cylinder 351 enables rapid switching of the contact state between the cleaning cloth 33 and the coating roller 2.

[0036] In some embodiments, such as Figure 1 As shown, the coating roller cleaning mechanism 3 also includes a cleaning dosage cup 38 connected to the cleaning agent tank 34, and a switch valve is provided at the outlet end of the cleaning dosage cup 38. Specifically, the cleaning dosage cup 38 is a container for storing cleaning agent, which can be connected to the cleaning agent tank 34 through a pipe. The cleaning dosage cup 38 can be made of transparent glass or corrosion-resistant plastic. The switch valve is used to control the connection between the cleaning dosage cup 38 and the cleaning agent tank 34. When the cleaning agent in the cleaning agent tank 34 is insufficient, the switch valve is opened, and the cleaning agent stored in the measuring cup is automatically replenished to the tank under gravity.

[0037] In some embodiments, such as Figures 2 to 4 As shown, the cleaning agent tank 34 is equipped with an adjusting roller 39, and the coating roller cleaning mechanism 3 also includes an adjusting device 310 for adjusting the height of the adjusting roller 39. The cleaning cloth 33 passes under the adjusting roller 39.

[0038] Specifically, by adjusting the height of the adjusting roller 39, the depth to which the cleaning cloth 33 penetrates the cleaning agent on its lower surface can be controlled, thereby controlling the amount of cleaning agent absorbed by the cleaning cloth 33. This ensures that the cleaning cloth 33 absorbs an appropriate amount of cleaning agent to wipe the coating roller 2, preventing insufficient cleaning or excessive cleaning agent residue on the coating roller 2, which could affect the electrode coating. By adjusting the height of the adjusting roller 39, the amount of cleaning agent absorbed by the cleaning cloth 33 can be flexibly controlled according to actual needs, avoiding excessive consumption of cleaning agent while ensuring that the cleaning cloth 33 is fully soaked to achieve the best cleaning effect.

[0039] In some embodiments, such as Figures 2 to 4 As shown, the adjusting device 310 includes a fixed block 311, a threaded rod 312, a bracket 313, and a slider 314. The threaded rod 312 passes through the fixed block 311 and is threadedly connected to the fixed block 311. The end of the threaded rod 312 is rotatably connected to the slider 314. The slider 314 is slidably connected to the bracket 313 in the vertical direction. The adjusting roller 39 is rotatably disposed on the slider 314.

[0040] Specifically, both the fixed block 311 and the bracket 313 are fixed to the frame 1. The fixed block 311 has a threaded hole that matches the threaded rod 312. The upper end of the threaded rod 312 is rotatably connected to the slider 314. When the threaded rod 312 rotates relative to the fixed block 311, it moves up and down, thereby driving the slider 314 to rise and fall on the bracket 313. In turn, the slider 314 drives the adjusting roller 39 to move up and down. An adjusting device 310 is provided at both ends of the adjusting roller 39.

[0041] In some embodiments, the cleaning cloth 33 is made of non-woven fabric. Choosing non-woven fabric as the material for the cleaning cloth 33 leverages its loose fiber structure, strong adsorption, and resistance to debris residue, enabling more efficient adsorption and removal of foreign matter and residual slurry from the surface of the coating roller 2 during the cleaning process. The high flexibility of the non-woven fabric allows it to closely adhere to the roller surface, avoiding scratches that may be caused by hard materials. Furthermore, its low cost and disposable nature reduce the frequency of downtime for changing cleaning materials, thereby improving cleaning efficiency and ensuring the quality of electrode coating.

[0042] In some embodiments, such as Figures 2 to 4As shown, the coating roller cleaning mechanism 3 also includes a floating roller 320 disposed on the transport path of the cleaning cloth 33. By setting the floating roller 320 on the transport path of the cleaning cloth 33, the floating roller 320 can dynamically adjust the tension of the cleaning cloth 33 in real time to compensate for tension fluctuations caused by differences in unwinding and rewinding speeds or deformation of the cleaning cloth 33 itself. Specifically, the floating roller 320 applies adaptive pressure to the cleaning cloth 33 through its own gravity or elastic structure. When the cleaning cloth 33 is slack, the floating roller 320 moves down to tighten the cloth surface; when the tension of the cleaning cloth 33 is too high, the floating roller 320 moves up to release the tension. This dynamic adjustment mechanism ensures that the cleaning cloth 33 is always in contact with the coating roller 2 in a stable tension state, avoiding the cleaning cloth 33 from shifting, wrinkling, or detaching from the surface of the coating roller 2 due to uneven tension, thereby ensuring the continuity of the cleaning process and the consistency of the cleaning effect.

[0043] In some embodiments, such as Figures 2 to 4 As shown, the coating roller cleaning mechanism 3 also includes multiple guide rollers 330 disposed on the transport path of the cleaning cloth 33. By distributing multiple guide rollers 330 on the transport path of the cleaning cloth 33, the path stability of the cleaning cloth 33 during movement is achieved. The layout of the guide rollers 330 can guide the cleaning cloth 33 to travel along a specific trajectory, avoiding problems such as slippage, wrinkling, or uneven contact between the cleaning cloth 33 and the coating roller 2 caused by path deviation or slack, thereby ensuring a continuous and uniform cleaning effect between the cleaning cloth 33 and the coating roller 2.

[0044] In some embodiments, the unwinding device 31 includes an unwinding motor and an unwinding roller connected to the unwinding motor, and the winding device 32 includes a winding motor and a winding roller connected to the winding motor. The cooperation between the unwinding motor and the unwinding roller enables the active release of the cleaning cloth 33 material, while the combination of the winding motor and the winding roller enables the active recycling of the cleaning cloth 33 after use. The unwinding motor, as a power source, can precisely control the supply speed of the cleaning cloth 33; the winding motor drives the winding roller to rotate, forming a continuous winding force to ensure that the soiled cleaning cloth 33 is promptly removed from the working area. The coordinated operation of both enables continuous automatic feeding of the cleaning cloth 33 without stopping the machine for cleaning, thus improving production efficiency.

[0045] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs.

[0046] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A coating roller cleaning mechanism, characterized in that, The coating roller cleaning mechanism comprises a unwinding device, a winding device, a cleaning cloth, a cleaning agent tank, a driving device, a first compression roller and a second compression roller, the cleaning cloth passes through the cleaning agent tank, the first compression roller and the second compression roller in sequence from the unwinding device and is wound by the winding device, the first compression roller and the second compression roller are arranged at intervals, and the driving device is used for driving the first compression roller and / or the second compression roller to move so that the cleaning cloth between the first compression roller and the second compression roller is close to or away from the coating roller.

2. The coating roller cleaning mechanism according to claim 1, wherein: the driving device comprises a cylinder and a connecting piece, a piston rod of the cylinder is connected with the connecting piece, and the connecting piece is connected with the first compression roller and / or the second compression roller. Further comprising:

3. The coating roll cleaning mechanism of claim 1, wherein, a cleaning agent measuring cup in communication with the cleaning agent tank, and a switch valve is arranged at a liquid outlet end of the cleaning agent measuring cup.

4. The coating roller cleaning mechanism according to claim 1, wherein: an adjusting roller is arranged in the cleaning agent tank, and the coating roller cleaning mechanism further comprises an adjusting device used for adjusting the height of the adjusting roller, and the cleaning cloth passes through the adjusting roller from below the adjusting roller.

5. The coating roller cleaning mechanism according to claim 4, wherein: the adjusting device comprises a fixed block, a threaded rod, a support and a sliding block, the threaded rod penetrates through the fixed block and is threadedly connected with the fixed block, end portions of the threaded rod are rotationally connected with the sliding block, the sliding block is slidingly connected with the support in a vertical direction, and the adjusting roller is rotationally arranged on the sliding block.

6. The coating roller cleaning mechanism according to claim 1, wherein: the cleaning cloth is made of non-woven fabric. Further comprising:

7. The coating roll cleaning mechanism of claim 1, wherein, a floating roller arranged on a transmission path of the cleaning cloth. Further comprising:

8. The coating roll cleaning mechanism of claim 1, wherein, a plurality of over rollers arranged on the transmission path of the cleaning cloth.

9. The coating roller cleaning mechanism according to claim 1, wherein: the unwinding device comprises an unwinding motor and an unwinding roller connected with the unwinding motor, and the winding device comprises a winding motor and a winding roller connected with the winding motor. The coating roller cleaning mechanism comprises a unwinding device, a winding device, a cleaning cloth, a cleaning agent tank, a driving device, a first compression roller and a second compression roller, the cleaning cloth passes through the cleaning agent tank, the first compression roller and the second compression roller in sequence from the unwinding device and is wound by the winding device, the first compression roller and the second compression roller are arranged at intervals, and the driving device is used for driving the first compression roller and / or the second compression roller to move so that the cleaning cloth between the first compression roller and the second compression roller is close to or away from the coating roller.

10. A pole piece coating apparatus characterized by, 2. The coating roller cleaning mechanism according to claim 1, wherein: the driving device comprises a cylinder and a connecting piece, a piston rod of the cylinder is connected with the connecting piece, and the connecting piece is connected with the first compression roller and / or the second compression roller. Further comprising: a cleaning agent measuring cup in communication with the cleaning agent tank, and a switch valve is arranged at a liquid outlet end of the cleaning agent measuring cup.

4. The coating roller cleaning mechanism according to claim 1, wherein: an adjusting roller is arranged in the cleaning agent tank, and the coating roller cleaning mechanism further comprises an adjusting device used for adjusting the height of the adjusting roller, and the cleaning cloth passes through the adjusting roller from below the adjusting roller.

5. The coating roller cleaning mechanism according to claim 4, wherein: the adjusting device comprises a fixed block, a threaded rod, a support and a sliding block, the threaded rod penetrates through the fixed block and is threadedly connected with the fixed block, end portions of the threaded rod are rotationally connected with the sliding block, the sliding block is slidingly connected with the support in a vertical direction, and the adjusting roller is rotationally arranged on the sliding block.

6. The coating roller cleaning mechanism according to claim 1, wherein: the cleaning cloth is made of non-woven fabric. Further comprising: a floating roller arranged on a transmission path of the cleaning cloth. Further comprising: a plurality of over rollers arranged on the transmission path of the cleaning cloth.

9. The coating roller cleaning mechanism according to claim 1, wherein: the unwinding device comprises an unwinding motor and an unwinding roller connected with the unwinding motor, and the winding device comprises a winding motor and a winding roller connected with the winding motor. The coating roller cleaning mechanism comprises a unwinding device, a winding device, a cleaning cloth, a cleaning agent tank, a driving device, a first compression roller and a second compression roller, the cleaning cloth passes through the cleaning agent tank, the first compression roller and the second compression roller in sequence from the unwinding device and is wound by the winding device, the first compression roller and the second compression roller are arranged at intervals, and the driving device is used for driving the first compression roller and / or the second compression roller to move so that the cleaning cloth between the first compression roller and the second compression roller is close to or away from the coating roller.

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