Delivery roller assembly and pole piece coating device

Abstract

The utility model relates to the technical field of pole piece coating devices, in particular to a drop roller assembly and a pole piece coating device.The drop roller assembly is used for coating pole pieces and comprises a motor, a magnetic transmission structure and a drop roller, the motor is in driving connection with one part of the magnetic transmission structure, the drop roller is connected with the other part of the magnetic transmission structure, and the magnetic transmission structure is connected with the drop roller. The magnetic transmission structure is configured to be in non-contact transmission. The magnetic transmission structure is constructed and controlled to be non-contact transmission, the contact type power transmission mode between the drop roller and the motor is changed, mechanical abrasion is reduced, chippings generated by abrasion are also reduced, accordingly, pollution to battery slurry is reduced, through magnetic transmission, power output is smoother and not prone to vibration, and the pole piece coating effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pole piece coating device, specifically, relates to a ink delivery roller assembly and pole piece coating device. BACKGROUND

[0002] The coating technology of lithium battery pole piece can be divided into gravure coating and extrusion coating, wherein the gravure coating fills the slurry into the groove by immersing the coating roller into the slurry, and drives the slurry to move by rotating the coating roller, when the base material passes between the coating roller and the pressure roller, the slurry in the groove of the coating roller is transferred to the base material, but the rotation of the coating roller drives the slurry to move, which is easy to cause the slurry to be thrown, in order to prevent the slurry from being thrown, an ink delivery roller device is added to transfer the slurry to the coating roller.

[0003] However, most of the existing designs on the market rely on a belt transmission structure as a power source to achieve driving, which adopts a belt or chain transmission mode, but the belt contact transmission mode is easy to cause friction, and in the process of operation, since the slurry is exposed to air between the rollers and is very close to the slurry on the material basin, the powder of the belt and the iron filings powder of the chain are easy to fall into the slurry, which will become foreign matter on the battery pole piece.

[0004] Therefore, there is an urgent need to invent an ink delivery roller assembly and pole piece coating device. UTILITY MODEL CONTENT

[0005] One of the purposes of the utility model is to provide an ink delivery roller assembly, which can achieve transmission without contact, reduce the generation of debris, and reduce the possibility of affecting the performance of the battery caused by debris.

[0006] To solve the above technical problems, the application adopts the following technical scheme:

[0007] The utility model provides an ink delivery roller assembly for coating pole piece, which comprises a motor, a magnetic transmission structure and an ink delivery roller, the motor is drivingly connected with a part of the magnetic transmission structure, the ink delivery roller is connected with another part of the magnetic transmission structure, and the magnetic transmission structure is configured as a contactless transmission.

[0008] Specifically, the magnetic transmission structure comprises a first magnetic wheel and a second magnetic wheel, the first magnetic wheel is fixedly connected with the ink delivery roller, the motor is drivingly connected with the second magnetic wheel, and the first magnetic wheel and the second magnetic wheel are magnetically coupled.

[0009] Specifically, the axis of the first magnetic wheel and the axis of the second magnetic wheel are perpendicular to each other.

[0010] Specifically, there is a gap between the first magnetic wheel and the second magnetic wheel.

[0011] Specifically, the distance between the first magnetic wheel and the second magnetic wheel is 0.2-2mm.

[0012] Specifically, the speed reducer is connected with the motor and the second magnetic wheel respectively, and is used for controlling the rotating speed of the second magnetic wheel.

[0013] Specifically, the speed reducer is connected with the motor and the second magnetic wheel respectively, and is used for controlling the rotating speed of the second magnetic wheel.

[0014] Specifically, the speed reducer is connected with the motor and the second magnetic wheel respectively, and is used for controlling the rotating speed of the second magnetic wheel.

[0015] Specifically, the first magnetic wheel is a driven wheel, the second magnetic wheel is a driving wheel, and the diameter of the first magnetic wheel is larger than that of the second magnetic wheel.

[0016] The application has the advantages that: the magnetic transmission structure is used for non-contact transmission, the non-contact transmission in the transmission structure does not have friction, the abrasion of the parts is reduced, the debris after the abrasion of the parts does not pollute the slurry of the battery, the performance of the battery is not affected, the power output is smoother and is not easy to vibrate through the magnetic transmission, and the coating effect of the pole piece is good.

[0017] The application provides a pole piece coating device. ACCURACY OF DRAWINGS

[0018] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application.

[0019] Figure 1 The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application.

[0020] Figure 2 The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application.

[0021] Figure 3 The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application.

[0022] Figure 4 The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application. Figure 1 The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application.

[0023] Figure 5 The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application.

[0024] Figure 6 The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application. Figure 5 The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application.

[0025] Wherein: 1-motor; 2-magnetic transmission structure; 21-first magnetic wheel; 22-second magnetic wheel; 3-ink transfer roller; 31-bearing; 32-bearing seat; 4-speed reducer; 5-fixed seat; 51-through hole. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application.

[0027] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the claims, and any person skilled in the art can make several possible changes and modifications without departing from the concept of the present application, therefore the protection scope of the present application should be limited by the scope defined by the claims of the present application.

[0029] The present inventors found that in the existing gravure coating, in order to prevent direct coating with a coating roller, excess slurry is easily thrown out from the hopper when the coating roller rotates, by using an ink transfer roller close to the coating roller, and immersing the lower part of the ink transfer roller into the hopper, a proper amount of slurry is transferred to the coating roller with the rotation of the ink transfer roller, and the slurry on the coating roller is coated on the substrate to complete the coating process, but since the slurry to be coated needs to be exposed to air during the gravure coating process, and the existing transmission structure of the ink transfer roller is a friction transmission structure, some debris inevitably falls out from the transmission structure due to mechanical wear during the operation of the ink transfer roller device, and these debris will enter the slurry with the air, resulting in contamination of the battery slurry.

[0030] The present inventors reduce the generation of debris from the perspective of reducing mechanical wear and reducing the generation of debris, thereby reducing the pollution of the battery slurry by the debris, and ensuring the performance and safety of the battery.

[0031] As shown in Figures 1-6 The present application provides an ink delivery roller 3 assembly for coating pole pieces, comprising a motor 1, a magnetic transmission structure 2 and an ink delivery roller 3, the motor 1 is drivingly connected with a part of the magnetic transmission structure 2, the ink delivery roller 3 is connected with another part of the magnetic transmission structure 2, the magnetic transmission structure 2 is configured as a contactless transmission, and the magnetic transmission structure 2 realizes power transmission through the action of a magnetic field. Since the power is transmitted through the action of a magnetic field, contactless transmission can be achieved to reduce mechanical wear during transmission.

[0032] Specifically, the magnetic transmission structure 2 comprises a first magnetic wheel 21 and a second magnetic wheel 22, the first magnetic wheel 21 is fixedly connected with the ink delivery roller 3, the motor 1 is drivingly connected with the second magnetic wheel 22, and the first magnetic wheel 21 and the second magnetic wheel 22 are magnetically coupled. In the present application, the magnetic transmission structure 2 can select various types of structures such as magnetic couplings, linear magnetic sliding blocks, magnetic discs, etc. Preferably, a magnetic wheel is used for magnetic power transmission. This is because the structure of the magnetic wheel is simple, the number of parts used is small, the debris generated by mechanical wear in transmission is less, and the magnetic wheel is usually small in size, easy to integrate into the existing system, saves space, and is more convenient to replace. It is beneficial to select different types of magnetic wheels according to different working conditions. By fixedly connecting the first magnetic wheel 21 and the second magnetic wheel 22 with the motor 1 and the ink delivery roller 3 respectively, and magnetically coupling the first magnetic wheel 21 and the second magnetic wheel 22, when the motor 1 drives the second magnetic wheel 22 to rotate, the first magnetic wheel 21 is driven to rotate by the magnetic field of the second magnetic wheel 22, and the ink delivery roller 3 is driven to rotate by the rotation of the first magnetic wheel 21.

[0033] As shown in Figure 4 Preferably, the axis of the first magnetic wheel 21 and the axis of the second magnetic wheel 22 are perpendicular to each other. When the axis of the first magnetic wheel 21 and the axis of the second magnetic wheel 22 are perpendicular to each other, the mutual magnetic action between the first magnetic wheel 21 and the second magnetic wheel 22 can be increased, and the working efficiency of the magnetic transmission structure 2 is improved. When the angle between the axis of the first magnetic wheel 21 and the axis of the second magnetic wheel 22 is between 85° and 95°, it can be considered that they are perpendicular to each other, and the transmission structure also has high working efficiency.

[0034] In some embodiments, the axis of the first magnetic wheel 21 and the axis of the second magnetic wheel 22 are perpendicular in the horizontal direction, forming a conical drive of the magnetic wheels. The conical drive makes the structural arrangement of the ink roller assembly more reasonable and compact.

[0035] Specifically, there is a gap between the first magnetic wheel 21 and the second magnetic wheel 22, and the friction between the first magnetic wheel 21 and the second magnetic wheel 22 is eliminated by setting the gap.

[0036] like Figure 1 As shown, preferably, the distance between the first magnetic wheel 21 and the second magnetic wheel 22 is 0.2-2 mm. An appropriate gap can optimize the magnetic coupling between the magnetic wheels, thereby improving transmission efficiency. An excessively large gap may lead to energy loss, while an excessively small gap may cause friction and wear. The gap distance of this application has high transmission efficiency and is less prone to friction and wear. By precisely controlling the gap, the system's response speed to input changes can be improved, achieving more flexible control.

[0037] Preferably, the system includes a speed reducer 4, with both ends connected to the motor 1 and the second magnetic wheel 22, respectively. The speed reducer 4 controls the rotational speed of the second magnetic wheel 22. By reducing the output speed of the motor 1, the speed reducer 4 makes the rotational speed of the second magnetic wheel 22 controllable. This ensures that the second magnetic wheel 22 operates within an appropriate speed range to meet the effective magnetic force transmission speed range of the magnetic wheel, resulting in higher efficiency transmission. The speed reducer 4 can achieve more precise speed control, improve the stability of the magnetic transmission structure 2, and ensure that the second magnetic wheel 22 operates smoothly under different load conditions.

[0038] Specifically, bearings 31 are provided at both ends of the ink delivery roller 3. The ink delivery roller 3 is rotatably mounted on the bearing seat 32 through the bearings 31. By fixing the ink delivery roller 3 to the first magnetic wheel 21, the ink delivery roller 3 can directly benefit from the drive of the first magnetic wheel 21, so that the ink delivery roller 3 can be directly driven to rotate. The rotation speed of the ink delivery roller 3 can be controlled by controlling the first magnetic wheel 21. The shaft at one end of the ink delivery roller 3 is provided with multiple sections of different diameters, which is conducive to the installation of the bearings 31 and the first magnetic wheel 21.

[0039] Specifically, it also includes a fixed base 5, and the reducer 4 is installed in the through hole 51 of the fixed base 5. Since a bearing seat 32 is provided near the first magnetic wheel 21 and a fixed base 5 is provided near the second magnetic wheel 22, the smooth operation between the second magnetic wheel 22 and the first magnetic wheel 21 can be maintained by the arrangement of the bearing seat 32 and the fixed base 5.

[0040] Preferably, the first magnetic wheel 21 is a driven wheel, and the second magnetic wheel 22 is a driving wheel, the diameter of the first magnetic wheel 21 is larger than that of the second magnetic wheel 22, when the second magnetic wheel 22 rotates, the torque output can be enhanced by using the lever principle due to the larger diameter of the first magnetic wheel 21, the rotation of the larger-diameter driven wheel is more stable, the rotation of the ink delivery roller 3 is more stable, and the power transmission is smoother, the vibration is smaller, and the coating of the pole piece is more uniform.

[0041] According to some embodiments of the present application, the present application also provides a pole piece coating device, which comprises the ink delivery roller assembly of any one of the above.

[0042] The above description shows and describes several preferred embodiments of the present application, but as before, it should be understood that the present application is not limited to the forms disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the present application, by the above teachings or related technical or knowledge. Any modification and change made by those skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the appended claims of the present application.

Claims

1. An ink delivery roller assembly for coating pole pieces, characterized by: The ink delivery roller assembly comprises a motor (1), a magnetic transmission structure (2) and an ink delivery roller (3), the motor (1) is drivingly connected with a part of the magnetic transmission structure (2), the ink delivery roller (3) is connected with another part of the magnetic transmission structure (2), and the magnetic transmission structure (2) is configured as a contactless transmission.

2. The ink roller assembly of claim 1, wherein: The magnetic transmission structure (2) comprises a first magnetic wheel (21) and a second magnetic wheel (22), the first magnetic wheel (21) is fixedly connected with the ink delivery roller (3), the motor (1) is drivingly connected with the second magnetic wheel (22), and the first magnetic wheel (21) and the second magnetic wheel (22) are magnetically coupled.

3. The ink roller assembly of claim 2, wherein: The axis of the first magnetic wheel (21) and the axis of the second magnetic wheel (22) are perpendicular to each other.

4. The ink roller assembly of claim 2, wherein: There is a gap between the first magnetic wheel (21) and the second magnetic wheel (22).

5. The ink roller assembly of claim 2, wherein: The distance of the gap between the first magnetic wheel (21) and the second magnetic wheel (22) is 0.2-2mm.

6. The ink roller assembly of claim 2, wherein: The ink delivery roller assembly further comprises a speed reducer (4), the speed reducer (4) is connected with the motor (1) and the second magnetic wheel (22) at two ends respectively, and is used for controlling the rotating speed of the second magnetic wheel (22).

7. The ink roller assembly of claim 2, wherein: Both ends of the ink delivery roller (3) are provided with bearings (31), and the ink delivery roller (3) is rotatably installed on a bearing seat (32) through the bearings (31).

8. The ink roller assembly of claim 6, wherein: The ink delivery roller assembly further comprises a fixing seat (5), and the speed reducer (4) penetrates through a through hole (51) of the fixing seat (5).

9. The ink roller assembly of claim 2, wherein: The first magnetic wheel (21) is a driven wheel, the second magnetic wheel (22) is a driving wheel, and the diameter of the first magnetic wheel (21) is greater than the diameter of the second magnetic wheel (22).

10. A pole piece coating device characterized by: The ink delivery roller assembly comprises the ink delivery roller assembly according to any one of claims 1-9.

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