CN219778915U - Pole piece roll squeezer - Google Patents

Abstract

The utility model relates to a pole piece roller press, which comprises a frame, a rolling device arranged on the frame and a roller surface cleaning device arranged on the frame, wherein the rolling device comprises a roller surface cleaning device, a roller surface cleaning device and a roller surface cleaning device; the rolling device comprises two rotating rollers rotatably arranged on the frame and a driving assembly arranged on the frame, wherein the driving assembly is in driving connection with the rotating rollers, and a rolling gap for the pole piece to pass through is arranged between the two rotating rollers; the roller surface cleaning device comprises two cleaning assemblies, each cleaning assembly comprises a base body arranged on the frame, a driving air cylinder arranged on the base body and cleaning pieces connected with the driving air cylinder in a driving mode, each driving air cylinder drives each cleaning piece to move, and therefore each cleaning piece is correspondingly and movably abutted to each rotating roller one by one. Therefore, the surface cleanliness of the rotating roller is improved, the rolling processing yield of the electrode plates is improved, the rotating roller is not required to be cleaned manually, the rotating roller is not required to be cleaned by stopping in the rolling process, and the production efficiency is improved.

Description

Pole piece roll squeezer

Technical Field

The utility model relates to the field of lithium battery pole pieces, in particular to a pole piece roller press.

Background

The lithium battery comprises a shell containing electrolyte, a winding core and necessary circuits, wherein the winding core is composed of a positive pole piece, a negative pole piece and a separation film positioned between the positive pole piece and the negative pole piece, the pole pieces need to be rolled in the production and manufacturing process, so that electrode materials coated on the surfaces of the pole pieces can be uniformly distributed, the density of the electrode materials at each part of the pole pieces is ensured to reach the standard, the rolling process is generally completed through a pole piece rolling machine, and two rolling wheels which rotate in opposite directions on the rolling machine roll the pole pieces from two opposite sides.

However, the electrode material is easy to adhere to the roller when the electrode roll press still has the defect in actual working, if the electrode material is adhered, the adhering position is rolled on the electrode sheet again along with the roller after rotating for a circle, so that the occurrence of the indentation on the pressed position of the electrode sheet is caused, the occurrence of the indentation means that the thickness of the electrode material is uneven, the occurrence of processing defective products is caused, and the rolling processing yield of the roll press is low;

in order to ensure the rolling yield, the surface cleanliness of the pressing roller is usually ensured by manually cleaning the roller surface, but in this way, the production efficiency of the product is reduced, and the labor cost is increased.

Disclosure of Invention

The utility model aims to solve the technical problems of providing a pole piece roller press, which not only can improve the rolling processing yield, but also can avoid the cost and complexity of manually wiping the roller, and can improve the production efficiency of products.

The utility model provides a pole piece roll squeezer, which comprises a frame, a roll pressing device arranged on the frame and a roll surface cleaning device arranged on the frame;

the rolling device comprises two rotating rollers rotatably arranged on the frame and a driving assembly arranged on the frame, wherein the driving assembly is in driving connection with the rotating rollers, and a rolling gap for a pole piece to pass through is arranged between the two rotating rollers;

the roller surface cleaning device comprises two cleaning assemblies, each cleaning assembly comprises a base body arranged on the frame, a driving air cylinder arranged on the base body, and cleaning pieces connected with the driving air cylinder in a driving mode, and each driving air cylinder drives each cleaning piece to move, so that each cleaning piece is movably propped against each rotating roller in a one-to-one correspondence mode.

Preferably, the roller surface cleaning device further comprises two auxiliary components, wherein each auxiliary component comprises a connecting piece, a limiting cylinder arranged on the connecting piece, an auxiliary spring arranged in the limiting cylinder and a sliding rod connected with the cleaning piece;

each connecting piece is connected with each driving cylinder in a one-to-one correspondence manner, each sliding rod is provided with a limiting plate, each limiting plate is positioned in each limiting cylinder in a one-to-one correspondence manner, each auxiliary spring is abutted against each limiting plate in a one-to-one correspondence manner, and each sliding rod is penetrated with each limiting cylinder and each auxiliary spring in a one-to-one correspondence manner;

the auxiliary spring provides acting force for driving the limiting plate to move, so that the limiting plate drives the sliding rod to move towards the direction close to the rotating roller, and further drives the cleaning piece to move and prop against the rotating roller.

Preferably, the roll surface cleaning device further comprises an adjusting assembly, the adjusting assembly comprises an adjusting bolt and an adjusting waist hole, the adjusting waist hole is formed in the frame, and the adjusting bolt is threaded on the seat body after penetrating through the adjusting waist hole.

Preferably, the roll surface cleaning device further comprises an adjusting assembly, the adjusting assembly comprises an adjusting bolt and an adjusting waist hole, the adjusting waist hole is formed in the base body, and the adjusting bolt is threaded to the frame after penetrating through the adjusting waist hole.

Preferably, each connecting piece is provided with a plurality of limiting cylinders, each limiting cylinder is axially symmetrically distributed on the central axis of the connecting piece, each limiting cylinder is internally provided with an auxiliary spring, and each limiting cylinder is provided with the sliding rod in a sliding manner.

Preferably, each auxiliary assembly further comprises a rubber member arranged on the connecting member, and the rubber member is positioned between the base and the connecting member.

Preferably, the roll surface cleaning device further comprises two scraping assemblies, each scraping assembly comprises a scraper arranged on the frame and a hopper connected with the scraper, each scraper is in one-to-one butt joint with each rotating roller, and the hopper extends to the lower side of the scraper to form a scraping collecting groove.

Preferably, the pole piece roll squeezer further comprises an angle adjusting device, wherein the angle adjusting device comprises an adjusting motor arranged on the rack, an adjusting frame in driving connection with the adjusting motor, and an adjusting roller rotatably arranged on the adjusting frame; the adjusting motor drives the adjusting frame to rotate relative to the frame.

Preferably, the driving assembly comprises a driving motor arranged on the frame and a reduction gearbox in driving connection with the driving motor, and the reduction gearbox is in driving connection with the rotating roller.

Preferably, the cleaning member comprises a nonwoven fabric; or the cleaning piece is provided with a profiling curved surface, and the radius of the profiling curved surface is matched with the radius of the rotating roller.

The implementation of the utility model has the following beneficial effects:

the utility model relates to a pole piece roller press, wherein a roller surface cleaning device is arranged on the pole piece roller press, the roller surface cleaning device comprises two cleaning components, and a driving cylinder drives a cleaning piece to be abutted on a rotating roller on each cleaning component, so that the cleaning piece can clean the rotating roller in the rotating process, and electrode materials are prevented from being adhered and retained on the rotating roller;

therefore, the surface cleanliness of the rotating roller is improved, the rolling processing yield of the electrode plates is improved, the rotating roller is not required to be cleaned manually, the rotating roller is not required to be cleaned by stopping in the rolling process, and the production efficiency is improved.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular descriptions of exemplary embodiments of the utility model as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the utility model.

FIG. 1 is a schematic illustration of a pole piece roll squeezer in accordance with certain embodiments of the utility model;

FIG. 2 is a schematic view of the pole piece roll squeezer shown in FIG. 1 from another perspective;

FIG. 3 is an enlarged view of the pole piece roll squeezer of FIG. 2 at A;

FIG. 4 is another schematic illustration of a pole piece roll squeezer in accordance with some embodiments of the utility model;

fig. 5 is a cross-sectional view of a pole piece roll squeezer in some embodiments of the utility model.

Detailed Description

Embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While embodiments of the present utility model are illustrated in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the utility model. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Fig. 1 and 2 illustrate a pole piece roll press 10 in accordance with some embodiments of the present utility model, the pole piece roll press 10 being used to roll electrode sheets of lithium batteries. The pole piece roll squeezer 10 comprises a frame 1, a roll pressing device 2 arranged on the frame 1 and a roll surface cleaning device 3 arranged on the frame 1; the frame 1 is used for installing roll-in device 2 and roll surface cleaning device 3, and roll-in device 2 is used for carrying out the roll-in to the electrode slice, and roll surface cleaning device 3 is used for carrying out the cleanness to roll-in device 2.

As shown in fig. 1 to 5, the rolling device 2 comprises two rotating rollers 21 rotatably arranged on the frame 1, and a driving assembly 22 arranged on the frame 1, wherein the driving assembly 22 is in driving connection with the rotating rollers 21, and a rolling gap for passing through a pole piece is arranged between the two rotating rollers 21;

as can be appreciated, the rotating rollers 21 are used to abut against the electrode sheet, wherein one rotating roller 21 abuts against the electrode sheet from one side of the electrode sheet, and the other rotating roller 21 abuts against the electrode sheet from the other side of the electrode sheet, thereby collectively rolling the electrode sheet. The driving assembly 22 is used for providing power for driving the rotating roller 21 to rotate. The size of the rolling gap is set according to the processing requirement of the electrode plate, the electrode plate materials of the electrode plates of the lithium batteries with different specifications are different in required thickness, and the size of the rolling gap is correspondingly set according to the required thickness.

It should be noted that, the two rotating rollers 21 may be simultaneously driven to rotate by one driving assembly 22, and specifically, the driving assembly 22 and the two rotating rollers 21 may be connected by a transmission structure in the related art. It is also possible to set the number of driving units 22 to two and then to drive each rotating roller 21 by one driving unit 22, respectively. Although the number of the driving units 22 can be flexibly set, it is necessary to ensure that the rotational speeds of the two rotating rollers 21 are equal.

The roller surface cleaning device 3 comprises two cleaning assemblies 31, wherein each cleaning assembly 31 comprises a base 311 arranged on the frame 1, a driving cylinder 312 arranged on the base 311, and cleaning pieces 313 connected with the driving cylinder 312 in a driving manner, and each driving cylinder 312 drives each cleaning piece 313 to move, so that each cleaning piece 313 is movably abutted against each rotating roller 21 in a one-to-one correspondence manner.

It will be appreciated that the cleaning assembly 31 is used to clean the rotatable roller 21. The seat body 311 is provided with a driving cylinder 312, the driving cylinder 312 is used for driving the cleaning member 313 to move toward or away from the rotating roller 21, and the cleaning member 313 is used for cleaning the rotating roller 21.

It should be noted that, each rotating roller 21 has one cleaning assembly 31 for cleaning, and the number of driving cylinders 312 in any one cleaning assembly 31 may be set to one or more. The shape and the structure of the two seat bodies 311 can be the same or different, and the respective setting positions of the two seat bodies 311 can flexibly select the proper position on the frame 1.

It should be noted that, after the cleaning member 313 is driven by the driving cylinder 312 to contact with the rotating roller 21, the rotating roller 21 is not clamped, and the rotating roller 21 still rotates at a predetermined speed, and the cleaning member 313 is always supported on the rotating roller 21 during the rotation of the rotating roller 21.

Specifically, the cleaning member 313 includes a nonwoven fabric, which has advantages of being less prone to lint and low cost. The number of cleaning members 313 can be flexibly set.

Specifically, the cleaning member 313 is provided with a profiling curved surface 314, and the radius of the profiling curved surface 314 is adapted to the radius of the rotating roller 21. The radius of the profiling curved surface 314 may be equal to the radius of the rotating roller, or may be slightly larger or smaller than the radius of the rotating roller 21, so as to increase the contact area between the profiling curved surface 314 and the rotating roller 21 as much as possible, and improve the cleaning effect.

As shown in fig. 1 to 5, in some embodiments of the pole piece roll squeezer 10, the roll surface cleaning device 3 further includes two auxiliary assemblies 32, each of the auxiliary assemblies 32 including a connecting member 321, a limiting cylinder 322 disposed on the connecting member, an auxiliary spring 323 disposed within the limiting cylinder 322, and a slide bar 324 connecting the cleaning member 313;

each connecting piece 321 is connected with each driving cylinder 312 in a one-to-one correspondence manner, each sliding rod 324 is provided with a limiting plate, each limiting plate is positioned in each limiting cylinder 322 in a one-to-one correspondence manner, each auxiliary spring 323 is abutted to each limiting plate in a one-to-one correspondence manner, and each sliding rod 324 is penetrated with each limiting cylinder 322 and each auxiliary spring 323 in a one-to-one correspondence manner;

the auxiliary spring 323 provides a force for driving the limiting plate to move, so that the limiting plate drives the sliding rod 324 to move towards the direction approaching to the rotating roller 21, and further drives the cleaning member 313 to movably abut against the rotating roller 21.

It will be appreciated that the auxiliary assembly 32 serves to assist the cleaning assembly 31 in better cleaning the rotatable roller 21. The connecting piece 321 is used for moving under the driving of the driving cylinder 312, the limiting cylinder 322 is used for accommodating the auxiliary spring 323, the auxiliary spring 323 is prevented from being distorted or bent, and the sliding rod 324 is used for driving the cleaning piece 313 to move.

It should be noted that, when the cleaning member 313 is not yet abutted to the rotating roller 21, the sliding rod 324 is driven by the auxiliary spring 323 to extend to the limiting cylinder 322 and reach the limit position; in the process that the cleaning piece 313 is abutted to the rotating roller 21 and the driving cylinder 312 still drives the cleaning piece 313 to move towards the rotating roller 21, the sliding rod 324 can move relative to the limiting cylinder 322 by overcoming the elastic force of the auxiliary spring 323 through the limiting plate, at the moment, the elastic force of the auxiliary spring 323 can be transmitted to the sliding rod 324 through the limiting plate, under the action of the elastic force, the cleaning piece 313 can be abutted to the rotating roller 21 more tightly, the cleaning effect of the cleaning assembly 31 on the rotating roller 21 is improved, and therefore the rolling processing yield of the electrode plates is further ensured.

As shown in fig. 1 to 5, in some embodiments of the pole piece roll squeezer 10, the roll surface cleaning device 3 further includes an adjusting assembly 33, the adjusting assembly 33 includes an adjusting bolt 331 and an adjusting waist hole 332, the adjusting waist hole 332 is disposed on the frame 1, and the adjusting bolt 331 is screwed on the base 311 after passing through the adjusting waist hole 332.

It can be appreciated that the adjusting bolt 331 is used to pass through the adjusting waist hole 332 and then be screwed on the base 311, so as to fix the base 311. Screw holes matched with the adjusting bolts 331 are formed in the seat body 311. When the position of the cleaning assembly 31 needs to be adjusted, the cleaning member 313 can be abutted against the rotating roller 21 from a predetermined direction at a predetermined angle, so that the cleaning member 313 can be accurately abutted against the rotating roller 21, and normal cleaning of the rotating roller 21 is ensured. Specifically, the relative positions of the adjusting bolt 311 and the adjusting waist hole 332 are adjusted, and the adjusting bolt 331 can be smoothly screwed into the corresponding screw hole on the base 311, so that the base 311 can be fixed at different positions or angles.

The adjustment waist hole 332 may be a waist hole extending straight, or the adjustment waist hole 332 may be a waist hole extending along a certain curvature.

As shown in fig. 1, in some embodiments of the pole piece roll squeezer 10, the roll surface cleaning device 3 further includes an adjusting assembly 33, the adjusting assembly 33 includes an adjusting bolt 331 and an adjusting waist hole 332, the adjusting waist hole 332 is disposed on the base 311, and the adjusting bolt 331 is screwed on the frame 1 after passing through the adjusting waist hole 332.

It will be appreciated that the frame 1 is provided with a threaded hole for screwing with the adjusting bolt 331. In this embodiment, the position of the adjustment waist hole 332 is set on the seat body 311, which is the same as the previous embodiment, and the relative position of the adjustment waist hole 332 and the adjustment bolt 311 can be adjusted on the basis that the adjustment bolt 331 can be correctly screwed on the frame 1, so that the seat body 311 can be fixed at a desired angle or position.

As shown in fig. 1 to 4, in some embodiments of the pole piece roller press 10, a plurality of limiting cylinders 322 are disposed on each connecting piece 321, each limiting cylinder 322 is axisymmetrically distributed with a central axis of the connecting piece, an auxiliary spring 323 is disposed in each limiting cylinder 322, and a sliding rod 324 is slidably disposed on each limiting cylinder 322.

It will be appreciated that each auxiliary assembly 32 includes a plurality of limiting barrels 322, an auxiliary spring 323 is disposed within each limiting barrel 322, and a slide bar 324 is disposed on each limiting barrel 322. The plurality of auxiliary springs 323 simultaneously provide elastic force to the sliding rod 324, so that the cleaning member 313 can be more tightly abutted on the rotating roller 21, and the cleaning effect is improved. Meanwhile, the positions of the limiting cylinders 322 are axisymmetrically distributed, so that the elastic force provided by the auxiliary springs 323 to the cleaning piece 313 can be kept balanced as much as possible, and the problem that the cleaning piece 313 is tilted locally due to uneven elastic force is avoided.

As shown in fig. 3, in some embodiments of the pole piece roll squeezer 10, each auxiliary assembly 32 further includes a rubber member 325 disposed on the connector 321, the rubber member 325 being located between the base 311 and the connector 321.

As can be appreciated, the rubber member 325 plays a role of buffering, and is used for avoiding collision between the connecting member 321 and the seat 311, so as to improve durability of the pole piece roller press.

As shown in fig. 1 to 5, in some embodiments of the pole piece roll squeezer 10, the roll surface cleaning device 3 further includes two scraping assemblies 34, each scraping assembly 34 includes a scraper 341 disposed on the frame 1, and a hopper 342 connected to the scraper 341, each scraper 341 abuts against each rotating roller 21 one by one, and the hopper 342 extends to a position below the scraper 341 to form a scraping collecting groove 343.

It will be appreciated that the scraping assembly 34 is used for scraping and cleaning the excessive material on the rotating roller 21, and the co-arrangement of the scraping assembly and the cleaning assembly 31 can further improve the cleaning effect on the rotating roller 21. The scraper 341 may be a scraper for cleaning, which is common in the related art, for example, the scraper may be a plastic scraper, and specific hardness, edge thickness, shape and the like of the plastic scraper may be flexibly set. The connection mode between the hopper 342 and the scraper 341 can be bolt connection, buckle connection, adhesive connection and the like, and the hopper 342 and the scraper 341 can be manufactured together in an integrated forming mode. The scraping collecting tank 343 is used for collecting the scraped material from the rotating roller 21.

As shown in fig. 1, 2 and 4, in some embodiments of the pole piece roll squeezer 10, the pole piece roll squeezer 10 further includes an angle adjusting device 4, wherein the angle adjusting device 4 includes an adjusting motor 41 disposed on the frame 1, an adjusting frame 42 drivingly connected to the adjusting motor 41, and an adjusting roller 43 rotatably disposed on the adjusting frame 42; the adjusting motor 41 drives the adjusting bracket 42 to rotate relative to the frame 1.

It will be appreciated that the angle adjusting device 4 is used to adjust the conveying angle of the electrode sheet, the number of the angle adjusting devices 4 may be one or more, the angle adjusting device 4 disposed on the feeding side of the electrode sheet roll press 10 is used to adjust the angle between the two rotating rolls 21, and the angle adjusting device 4 disposed on the discharging side of the electrode sheet roll press 10 is used to adjust the angle after the electrode sheet is fed out of the two rotating rolls 21. The electrode plate can be guided to be conveyed along a preset angle through the angle adjusting device 4, so that the rolling yield is ensured.

The adjusting motor 41 is used to provide a force for driving the adjusting frame 42 to rotate on the frame 1. The adjusting frame 42 is used for supporting the adjusting roller 43 to rotate. The regulating roller 43 is used for conveying the battery pole piece and supporting the battery pole piece in a rotating manner so that the battery pole piece can move smoothly.

As shown in fig. 1 to 5, in some embodiments of the pole piece roll squeezer 10, the drive assembly 22 includes a drive motor 23 disposed on the frame 1, and a reduction gearbox 24 drivingly connected to the drive motor 23, the reduction gearbox 24 being drivingly connected to the rotatable roller 21.

As will be appreciated, the drive motor 23 is configured to transmit torque to the reduction gearbox 24, and the reduction gearbox 24 is configured to speed the torque output by the drive motor 23 so that the rotatable roller 21 can rotate at a predetermined speed.

The implementation of the utility model has the following beneficial effects:

the utility model relates to a pole piece roller press, wherein a roller surface cleaning device is arranged on the pole piece roller press, the roller surface cleaning device comprises two cleaning components, and a driving cylinder drives a cleaning piece to be abutted on a rotating roller on each cleaning component, so that the cleaning piece can clean the rotating roller in the rotating process, and electrode materials are prevented from being adhered and retained on the rotating roller;

therefore, the surface cleanliness of the rotating roller is improved, the rolling processing yield of the electrode plates is improved, the rotating roller is not required to be cleaned manually, the rotating roller is not required to be cleaned by stopping in the rolling process, and the production efficiency is improved.

The aspects of the present utility model have been described in detail hereinabove with reference to the accompanying drawings. In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments. Those skilled in the art will also appreciate that the acts and modules referred to in the specification are not necessarily required for the present utility model. In addition, it can be understood that the steps in the method of the embodiment of the present utility model may be sequentially adjusted, combined and pruned according to actual needs, and the modules in the device of the embodiment of the present utility model may be combined, divided and pruned according to actual needs.

The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. The pole piece roller press is characterized by comprising a frame (1), a roller pressing device (2) arranged on the frame (1) and a roller surface cleaning device (3) arranged on the frame (1);

the rolling device (2) comprises two rotating rollers (21) rotatably arranged on the frame (1) and a driving assembly (22) arranged on the frame (1), wherein the driving assembly (22) is in driving connection with the rotating rollers (21), and a rolling gap for a pole piece to pass through is arranged between the two rotating rollers (21);

the roll surface cleaning device (3) comprises two cleaning assemblies (31), each cleaning assembly (31) comprises a base (311) arranged on the frame (1), a driving air cylinder (312) arranged on the base (311) and cleaning pieces (313) connected with the driving air cylinder (312) in a driving mode, each driving air cylinder (312) drives each cleaning piece (313) to move, and therefore each cleaning piece (313) is correspondingly and movably abutted to each rotating roll (21).

2. The pole piece roll squeezer as claimed in claim 1, wherein the roll surface cleaning device (3) further comprises two auxiliary components (32), each auxiliary component (32) comprising a connecting piece (321), a limiting cylinder (322) arranged on the connecting piece, an auxiliary spring (323) arranged in the limiting cylinder (322), and a sliding rod (324) connected with the cleaning piece (313);

each connecting piece (321) is correspondingly connected with each driving cylinder (312), each sliding rod (324) is provided with a limiting plate, each limiting plate is correspondingly positioned in each limiting cylinder (322), each auxiliary spring (323) is correspondingly abutted against each limiting plate, and each sliding rod (324) is correspondingly penetrated through each limiting cylinder (322) and each auxiliary spring (323);

the auxiliary spring (323) provides an acting force for driving the limiting plate to move, so that the limiting plate drives the sliding rod (324) to move towards the direction close to the rotating roller (21), and further drives the cleaning piece (313) to movably abut against the rotating roller (21).

3. The pole piece roll squeezer according to claim 1 or 2, wherein the roll surface cleaning device (3) further comprises an adjusting assembly (33), the adjusting assembly (33) comprises an adjusting bolt (331) and an adjusting waist hole (332), the adjusting waist hole (332) is arranged on the stand (1), and the adjusting bolt (331) is screwed on the base body (311) after penetrating through the adjusting waist hole (332).

4. The pole piece roll squeezer according to claim 1 or 2, wherein the roll surface cleaning device (3) further comprises an adjusting assembly (33), the adjusting assembly (33) comprises an adjusting bolt (331) and an adjusting waist hole (332), the adjusting waist hole (332) is arranged on the base body (311), and the adjusting bolt (331) is screwed on the frame (1) after penetrating through the adjusting waist hole (332).

5. The pole piece roll squeezer according to claim 2, wherein a plurality of limiting cylinders (322) are arranged on each connecting piece (321), the limiting cylinders (322) are distributed in an axisymmetric mode with the central axis of the connecting piece, the auxiliary springs (323) are arranged in the limiting cylinders (322), and the sliding rods (324) are arranged on the limiting cylinders (322) in a sliding mode.

6. The pole piece roll squeezer as claimed in claim 2, wherein each of the auxiliary assemblies (32) further includes a rubber member (325) disposed on the connector (321), the rubber member (325) being located between the base (311) and the connector (321).

7. The pole piece roll squeezer according to claim 1, wherein the roll surface cleaning device (3) further comprises two scraping assemblies (34), each scraping assembly (34) comprises a scraper arranged on the frame (1) and a hopper connected with the scraper, each scraper is abutted against each rotating roll (21) in a one-to-one correspondence manner, and the hopper extends to the lower side of the scraper to form a scraping collecting groove.

8. The pole piece roll squeezer according to claim 1, further comprising an angle adjusting device (4), wherein the angle adjusting device (4) comprises an adjusting motor (41) arranged on the frame (1), an adjusting frame (42) connected with the adjusting motor (41) in a driving way, and an adjusting roller (43) rotatably arranged on the adjusting frame (42); the adjusting motor (41) drives the adjusting frame (42) to rotate relative to the frame (1).

9. Pole piece roll squeezer according to claim 1, characterized in that the drive assembly (22) comprises a drive motor (23) arranged on the frame (1) and a reduction gearbox (24) drivingly connected to the drive motor (23), the reduction gearbox (24) being drivingly connected to the rotating roll (21).

10. The pole piece roll squeezer as claimed in claim 1, wherein the cleaning member (313) comprises a nonwoven fabric; or the cleaning piece (313) is provided with a profiling curved surface (314), and the radius of the profiling curved surface (314) is matched with the radius of the rotating roller (21).