Roll cleaning device

Abstract

This utility model discloses a roll cleaning device, comprising: a scraper; a first driving device connected to the scraper, which drives the scraper to move closer to or away from the roll; a plasma generator connected to a nozzle, the nozzle and the scraper being distributed along the circumference of the roll; a second driving device connected to the nozzle, which drives the nozzle to reciprocate along the axial direction of the roll; and a gas supply device connected to the plasma generator, used to provide working gas to the plasma generator. This roll cleaning device uses the scraper to quickly remove large and sticky foreign objects, creating favorable conditions for plasma cleaning. Plasma cleaning removes minute contaminants and chemical residues. The two complement each other, achieving comprehensive and efficient cleaning of the roll surface, improving cleaning efficiency, effectively reducing downtime caused by untimely equipment cleaning, and ensuring the continuity of lithium battery electrode production.

Description

Technical Field

[0001] This utility model relates to the field of secondary battery production technology, specifically a roller cleaning device. Background Technology

[0002] In the lithium battery production process, the rolling process in electrode manufacturing is extremely critical. This process applies pressure to the coated and dried electrode sheets using the rollers of a rolling mill to achieve the required compaction density, ensuring uniform electrode thickness and guaranteeing cell consistency. However, during the rolling process, the close contact between the rollers and the electrode sheets, along with the high pressure, makes the roller surface highly susceptible to contamination from various foreign matter on the electrode sheet surface. This includes active material particles from the coating material, binder residues, and dust from the production environment.

[0003] Currently, there are many shortcomings in the methods for cleaning foreign objects from roller pressing equipment:

[0004] A single scraper can remove larger foreign objects, but it is ineffective at cleaning small particles, strong adhesive residues, and contaminants generated by chemical reactions. Frequent scraping is required to thoroughly clean the foreign objects, which accelerates scraper wear, shortens its lifespan, increases the frequency of scraper replacements, prolongs equipment downtime for maintenance, and impacts production efficiency.

[0005] Plasma cleaning is effective at removing microscopic contaminants and chemical residues, but it is extremely inefficient when dealing with large foreign objects, and its energy consumption and cost increase significantly.

[0006] Therefore, there is an urgent need to develop a roll cleaning device that meets the needs of the lithium battery industry, is efficient and economical. Utility Model Content

[0007] To overcome the shortcomings of the existing technology, this utility model provides a roll cleaning device. The roll cleaning device uses a scraper to quickly remove large and sticky foreign objects, creating favorable conditions for subsequent plasma cleaning. Plasma cleaning removes tiny contaminants and chemical residues. The two complement each other to achieve comprehensive and efficient cleaning of the roll surface, improve cleaning efficiency, effectively reduce downtime caused by untimely equipment cleaning, and ensure the continuity of lithium battery electrode production.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a roll cleaning device, comprising:

[0009] scraper;

[0010] A first driving device is connected to the scraper and can drive the scraper to move closer to or away from the roll.

[0011] A plasma generator, wherein the plasma generator is connected to a nozzle, and the nozzle and the scraper are distributed along the circumferential direction of the roll;

[0012] The second drive device is connected to the nozzle and can drive the nozzle to reciprocate along the axial direction of the roll.

[0013] A gas supply device, which is connected to the plasma generator, is used to provide working gas to the plasma generator.

[0014] Through the above technical solution, the roller cleaning device uses a scraper to quickly remove large and sticky foreign objects, creating favorable conditions for subsequent plasma cleaning. Plasma cleaning removes tiny contaminants and chemical residues. The two complement each other to achieve comprehensive and efficient cleaning of the roller surface, improve cleaning efficiency, effectively reduce downtime caused by untimely equipment cleaning, and ensure the continuity of lithium battery electrode production.

[0015] Furthermore, the device includes a mounting base connected to the first driving device. The mounting base has a mounting groove, and the scraper is detachably connected within the mounting groove. This design allows for easy replacement of the scraper when wear affects its cleaning performance, reducing maintenance difficulty.

[0016] Furthermore, the mounting base and the first drive device are rotatably connected, and a damper is provided between the mounting base and the first drive device. This design allows the mounting base to swing at a certain angle relative to the roll, adapting to the cleaning needs of rolls with different diameters and enhancing the versatility of the device.

[0017] Furthermore, the second drive device includes:

[0018] Electric motor;

[0019] A lead screw, which is connected to the motor, is arranged along the axial direction of the roll;

[0020] A lead screw nut is fitted onto the lead screw, and the lead screw nut is connected and fixed to the nozzle.

[0021] The above solution uses the rotation of the lead screw to drive the lead screw nut to move the nozzle back and forth along the axial direction of the roll, thereby ensuring that the nozzle of the plasma generator can effectively clean every part of the roll surface, improving cleaning efficiency and quality.

[0022] Furthermore, the plasma generator nozzle and the plasma generator are connected by a retractable connecting pipe, and the nozzle is configured as an arc-shaped structure conforming to the surface of the roll. Through this design, the nozzle can uniformly cover the roll surface with plasma, achieving comprehensive and thorough cleaning without blind spots. The retractable connecting pipe ensures that the nozzle can flexibly adjust its position during the movement of the nozzle by the second drive device, guaranteeing full coverage of the cleaning area and avoiding any cleaning blind spots.

[0023] Furthermore, it also includes a dust collection trough, which is located below the rollers and has its opening facing the rollers. The dust collection trough is used to collect foreign matter cleaned by the scraper and plasma generator.

[0024] Furthermore, the dust collection tank has at least one through hole communicating with it, the through hole being connected to a dust collection pipe, and the end of the dust collection pipe facing away from the dust collection tank being connected to a negative pressure device. Through this design, the negative pressure device provides suction to expel foreign objects from the dust collection tank.

[0025] Furthermore, it also includes a frame that rotatably supports the rolls, and the first drive unit and the second drive unit are connected to the frame. The frame is used to integrate the first drive unit, the second drive unit, and the rolls, making the entire roll cleaning device a single unit.

[0026] Furthermore, it also includes a controller, with the first drive device and the second drive device respectively connected to the controller. Through the above scheme, the controller can control the roll cleaning device to automatically complete the roll cleaning, achieving automation.

[0027] Furthermore, the gas supply device includes a storage tank, and the storage tank and the plasma generator are connected by a delivery pipeline, with a flow controller connected in series on the delivery pipeline.

[0028] Based on the above technical solution, the beneficial effects of this utility model are as follows:

[0029] 1. The roll cleaning device disclosed in this application uses a scraper to quickly remove large and sticky foreign objects, creating favorable conditions for subsequent plasma cleaning. Plasma cleaning removes tiny contaminants and chemical residues. The two complement each other to achieve comprehensive and efficient cleaning of the roll surface, improve cleaning efficiency, effectively reduce downtime caused by untimely equipment cleaning, and ensure the continuity of lithium battery electrode production.

[0030] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the roll cleaning device in this embodiment of the utility model;

[0033] Figure 2 This is a schematic diagram of the scraper mechanism in an embodiment of this utility model;

[0034] Figure 3 This is a schematic diagram of the mounting base in an embodiment of this utility model;

[0035] Figure 4 This is a schematic diagram of the structure of the nozzle and the second driving device in the embodiments of this utility model;

[0036] Figure 5 This is a schematic diagram of the dust collection tank in an embodiment of this utility model.

[0037] The reference numerals in the above figures are as follows: 1. Support; 2. Roller; 3. Scraper mechanism; 31. Scraper; 32. Telescopic cylinder; 33. Mounting base; 331. Mounting groove; 4. Cleaning mechanism; 41. Nozzle; 42. Guide rail; 43. Slider; 44. Four-way connector; 5. Dust collection trough; 51. Through hole; 52. Dust collection pipe. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] Example: This example discloses a roll cleaning device, characterized in that it includes a frame, such as... Figure 1As shown, the frame includes two spaced-apart supports 1, each with a corresponding mounting hole for mounting a roll 2, which can rotate within the mounting hole.

[0041] A scraper mechanism 3 is installed on the frame. The scraper mechanism 3 includes a first drive device fixedly connected to the frame. The first drive device is connected to the scraper 31 and can drive the scraper 31 to move closer to or away from the roll 2.

[0042] The frame is also equipped with a plasma cleaning mechanism 4, which includes a plasma generator. The plasma generator is connected to a nozzle 41, and the nozzle 41 and the plasma generator are connected by a telescopic connecting pipe. The nozzle 41 and the scraper 31 are distributed along the circumferential direction of the roll 2. The nozzle 41 is connected to a second driving device, which is mounted on the frame. The second driving device can drive the nozzle 41 to reciprocate along the axial direction of the roll 2.

[0043] In some feasible embodiments, such as Figure 1 As shown, along the circumferential direction of the roller 2, the nozzle 41 is positioned below the scraper 31.

[0044] The plasma generator is connected to a gas supply device, which provides working gas to the plasma generator. Neither the plasma generator nor the gas supply device is shown in the figure.

[0045] The plasma generator is a device that artificially converts gas into a plasma state (the fourth state of matter). It can ionize gases such as argon and oxygen and convert them into a plasma state.

[0046] Through the above technical solution, the roller cleaning device uses a scraper 31 to quickly remove large and sticky foreign objects, creating favorable conditions for subsequent plasma cleaning. Plasma cleaning removes tiny contaminants and chemical residues. The two complement each other to achieve comprehensive and efficient cleaning of the roller surface, improve cleaning efficiency, effectively reduce downtime caused by untimely equipment cleaning, and ensure the continuity of lithium battery electrode production.

[0047] In some feasible embodiments, such as Figure 2 As shown, the first driving device includes two telescopic cylinders 32 arranged in parallel. The two ends of the scraper 31 are connected to the driving ends of the telescopic cylinders 32. The extension and retraction of the driving ends of the telescopic cylinders 32 control the scraper 31 to move closer to or away from the roll 2.

[0048] In some feasible embodiments, the scraper 31 is detachably connected to the mounting base 33. Figure 2 , 3 As shown, both ends of the mounting base 33 are rotatably connected to the drive ends of two telescopic cylinders 32, and a damper is provided between the mounting base 33 and the drive ends of the telescopic cylinders 32. This allows the mounting base 33 to swing at a certain angle relative to the roll, adapting to the cleaning needs of roll surfaces with different diameters and enhancing the versatility of the device.

[0049] Optionally, the damper is a disc damping shaft. The mounting base 33 and the drive end of the telescopic cylinder 32 can be connected by a common rotating connection method such as a hinge.

[0050] In some feasible embodiments, the mounting base 33 is provided with a mounting groove 331, and the scraper 31 is inserted into the mounting groove 331. The mounting base 33 is provided with a threaded hole extending from the surface of the mounting base 33 to the mounting groove 331. A bolt is installed in the threaded hole. After the scraper 31 is inserted into the mounting groove 331, the bolt is rotated to abut the scraper 31, thereby fixing the scraper 31 in place. With this solution, when the scraper 31 wears down and affects the cleaning effect, it can be easily replaced, reducing maintenance difficulty.

[0051] In some feasible embodiments, the scraper 31 is made of polyetheretherketone (PEEK), which has excellent wear resistance and corrosion resistance, ensuring that the scraper 31 remains sharp for a long time in high-speed working environments.

[0052] In some feasible embodiments, the second driving device includes a guide rail 42 arranged along the axial direction of the roll, and a slider 43 that can slide along the guide rail 42 is provided on the guide rail 42. The slider 43 is connected and fixed to the nozzle 41. The slider 43 can be driven by a servo motor or a cylinder to reciprocate along the guide rail 42. This ensures that the nozzle 1 of the plasma generator can effectively clean every part of the roll surface, improving cleaning efficiency and quality.

[0053] Optionally, the second driving device may further include a lead screw arranged along the axial direction of the roll. The lead screw is connected to the drive shaft of the motor via a coupling, and a lead screw nut is fitted onto the lead screw. The lead screw nut is fixedly connected to the nozzle 41. The motor drives the lead screw to rotate, thereby driving the lead screw nut to move the nozzle 41 back and forth along the axial direction of the roll. This ensures that the nozzle 41 of the plasma generator can effectively clean every part of the roll surface, improving cleaning efficiency and quality. It should be noted that the nozzle 41 or the lead screw nut also needs to be connected to a guide device to prevent the lead screw nut from rotating with the lead screw. The guide device may be a linear bearing and a guide rod passing through the linear bearing.

[0054] In some feasible embodiments, such as Figure 4 As shown, the nozzle 41 is configured as an arc-shaped structure that conforms to the surface of the roll 2. Through this design, the nozzle can uniformly cover the roll surface with plasma, achieving comprehensive and thorough cleaning without any blind spots. The retractable connecting pipe ensures that the nozzle can flexibly adjust its position during the movement of the nozzle by the second drive device, guaranteeing full coverage of the cleaning area and avoiding any blind spots.

[0055] In some feasible embodiments, combined with Figure 1 , 4 As shown, a four-way connector 44 is provided between the nozzle 41 and the retractable connecting pipe. Two of the four-way connector 44 interfaces connect the nozzle 41 and the retractable connecting pipe, and the other two interfaces of the four-way connector 44 are used to connect the negative pressure device.

[0056] The gas supply device includes a storage tank, which is connected to the plasma generator via a delivery pipeline. A flow controller is connected in series on the delivery pipeline, and the flow controller can regulate the flow rate of gas entering the plasma generator from the storage tank.

[0057] In some feasible embodiments, the gas supply device includes at least an oxygen storage tank and an argon storage tank. Appropriate working gases are provided for different foreign substances. For example, argon is selected as the working gas for metal oxide foreign substances, while oxygen is used for organic foreign substances, to improve the targeting and effectiveness of the cleaning.

[0058] The roller cleaning device also includes a dust collection trough 5, which is located below the roller 2 and has an opening facing the roller 2. It is used to collect foreign objects cleaned by the scraper 31 and the plasma generator.

[0059] In some feasible embodiments, the dust collection tank 5 has at least one through hole 51 communicating with the dust collection tank 5. The through hole 51 is connected to a dust collection pipe 52, and the end of the dust collection pipe 52 facing away from the dust collection tank 5 is connected to a negative pressure device. Through the above solution, the negative pressure device provides suction to expel foreign objects from the dust collection tank 5.

[0060] In some feasible embodiments, the roll cleaning device further includes a controller, with the first drive device and the second drive device respectively connected to the controller. The controller can control the roll cleaning device to automatically complete the roll cleaning, achieving automation.

[0061] The controller can be a PLC controller, which drives the telescopic cylinder 32 to extend so that the scraper 31 is close to the roller 2 to scrape off large foreign objects from the surface of the roller 2. The foreign objects fall into the dust collection tank 5 under the action of gravity.

[0062] After large foreign objects are removed, the PLC controller activates the plasma generator and gas supply device. The plasma generated by the plasma generator is evenly sprayed onto the roller surface through nozzle 41 for deep cleaning. During the cleaning process, a servo motor drives the slider 43 to slowly move the nozzle 41 along the axis of the roller 2, ensuring that the plasma can fully cover every area of ​​the roller surface, thoroughly removing minute contaminants and chemical residues. The decomposition products after plasma cleaning are discharged under the influence of a negative pressure device connected to the four-way connector 44.

[0063] It should be noted that the roller 2 rotates during cleaning. In some feasible embodiments, a drive motor is provided on the frame to drive the roller 2 to rotate.

[0064] In some feasible embodiments, the negative pressure device described above is a vacuum cleaner.

[0065] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.

Claims

1. A roll cleaning device, characterized in that, include: scraper; A first driving device is connected to the scraper and can drive the scraper to move closer to or away from the roll. A plasma generator, wherein the plasma generator is connected to a nozzle, and the nozzle and the scraper are distributed along the circumferential direction of the roll; The second drive device is connected to the nozzle and can drive the nozzle to reciprocate along the axial direction of the roll. A gas supply device, which is connected to the plasma generator, is used to provide working gas to the plasma generator.

2. The roll cleaning device as described in claim 1, characterized in that, It includes a mounting base, which is connected to the first driving device. The mounting base is provided with a mounting groove, and the scraper is detachably connected to the mounting groove.

3. The roll cleaning device as described in claim 2, characterized in that, The mounting base and the first driving device are rotatably connected, and a damper is provided between the mounting base and the first driving device.

4. The roll cleaning device as described in claim 1, characterized in that, The second driving device includes: Electric motor; A lead screw, which is connected to the motor, is arranged along the axial direction of the roll; A lead screw nut is fitted onto the lead screw, and the lead screw nut is connected and fixed to the nozzle.

5. The roll cleaning device as described in claim 1, characterized in that, The nozzle is configured as an arc-shaped structure that conforms to the surface of the roll, and the nozzle and the plasma generator are connected by a retractable connecting pipe.

6. The roll cleaning device as described in claim 5, characterized in that, The nozzle and the retractable connecting pipe are connected by a T-joint. The roll cleaning device also includes a negative pressure device, which is connected to the tee connector via a negative pressure pipe.

7. The roll cleaning device as described in claim 1, characterized in that, It also includes a dust collection trough, which is disposed below the roll and the opening of the dust collection trough faces the roll; The dust collection tank has at least one through hole communicating with the dust collection tank. The through hole is connected to a dust collection pipe, and the end of the dust collection pipe away from the dust collection tank is connected to a negative pressure device.

8. The roll cleaning device as described in claim 1, characterized in that, It also includes a frame, which rotatably supports the rolls, and the first drive device and the second drive device are connected to the frame.

9. The roll cleaning device as described in claim 1, characterized in that, It also includes a controller, and the first drive device and the second drive device are respectively connected to the controller.

10. The roll cleaning device as described in claim 1, characterized in that, The gas supply device includes at least one storage tank, and the storage tank and the plasma generator are connected by a delivery pipe, with a flow controller connected in series on the delivery pipe.

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