CN221809618U - A pole piece rolling device - Google Patents

Abstract

The utility model relates to the technical field of lithium battery production, and specifically discloses a pole piece rolling device comprising: a roller assembly: comprising a first roller and a second roller, a rolling channel for rolling raw materials is provided between the first roller and the second roller; a calendering roller assembly: comprising a first calendering roller assembly and a second calendering roller assembly, the first calendering roller assembly is located at the side of the first roller facing away from the rolling channel, and the second calendering roller assembly is located at the side of the second roller facing away from the rolling channel; a first drive assembly: respectively connected to the first roller and the second roller in transmission; the pole piece rolling device of the utility model has a small volume, high interchangeability, simple operation, greatly reduced maintenance costs, and reduced site occupancy.

Description

A pole piece rolling device

Technical Field

The utility model relates to the technical field of lithium battery production, and more specifically, to a pole piece rolling device.

Background Art

Lithium-ion battery is a high-capacity, long-life, environmentally friendly battery with many advantages. It is widely used in energy storage, electric vehicles, portable electronic products and other fields. The electrode plate is the basis of lithium-ion power batteries and directly determines the electrochemical performance and safety of the battery. Battery pole pieces are usually made by dry or wet processes. The dry film making process is to make powder into a membrane, and then thermally compound it with the collector (foil) to make a battery pole piece. During the pole piece rolling process, in order to make the thickness of the rolled pole piece meet the standard, it is generally necessary to abut the spare roller on one side of the roller to increase the force on the roller.

Existing pole piece rolling devices all use a backup roller to abut against one side of the roller to increase the bearing capacity of the roller. However, the existing backup roller is large in size, complex in structure and not highly interchangeable, resulting in the pole piece rolling equipment occupying a large area and being difficult to install. In view of this, it is necessary to provide a new pole piece rolling device to solve the above problems.

Utility Model Content

The utility model provides a pole piece rolling device to solve the problems existing in the above-mentioned background technology.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a pole piece rolling device, comprising: a rolling roller assembly: comprising a first rolling roller and a second rolling roller, a rolling channel for rolling raw materials is provided between the first rolling roller and the second rolling roller; a calendering roller assembly: comprising a first calendering roller assembly and a second calendering roller assembly, the first calendering roller assembly is located on the side of the first rolling roller facing away from the rolling channel, and the second calendering roller assembly is located on the side of the second rolling roller facing away from the rolling channel; the first calendering roller assembly comprises a first moving assembly and a plurality of first calendering rollers, the plurality of first calendering rollers are in contact with the first rolling roller, and the first calendering rollers are in contact with the first rolling roller. The first movable component includes a first movable end corresponding to the plurality of first calendering rollers one by one, the first calendering roller is transmission-connected to the first movable end and reciprocates along the length direction of the first rolling roller; the second calendering roller component includes a second movable component and a plurality of second calendering rollers, the plurality of second calendering rollers are abutted against the second rolling roller, the second movable component includes a second movable end corresponding to the plurality of second calendering rollers one by one, the second calendering roller is transmission-connected to the second movable end and reciprocates along the length direction of the second rolling roller; the first driving component: transmission-connected to the first rolling roller and the second rolling roller respectively.

Furthermore, the first calendering roller assembly also includes a first bracket, on which a first movable assembly is arranged, and the first movable assembly includes a calendering roller shaft and a second driving member; the first movable end is sleeved on the calendering roller shaft, the driving end of the second driving member is movably connected to the first bracket and can reciprocate along the length direction of the first bracket, and the other end of the second driving member is arranged on the first movable end.

Furthermore, the first movable assembly also includes a first guide member and a movable member movably connected to the first guide member, and the movable member is movably connected to the first movable end; the movable member cooperates with the first guide member to drive the first movable end to slide along the length direction of the calendering roller shaft.

Furthermore, a roll gap adjustment assembly is provided between the first calendering roll assembly and the first rolling roll.

Furthermore, the roller gap adjustment assembly also includes a third driving member, a fixed arm, a first inclined block and a second inclined block, the fixed arm is fixedly arranged on one side of the first movable end, the first inclined block is arranged on the first movable end and is opposite to the fixed arm, the second inclined block is located between the first inclined block and the fixed arm, the inclination direction of the first inclined block is opposite to the inclination direction of the second inclined block, the driving end of the third driving member is connected to the second inclined block, and the third driving member drives the second inclined block to move so as to move the first movable end.

Furthermore, the second calendering roller assembly also includes a second bracket, the second movable assembly is fixedly mounted on the second bracket, the second movable assembly also includes a second guide member, and the second calendering roller slides along the direction of the second guide member through the second movable end.

Furthermore, it also includes a scraper mechanism, which includes a scraper and a scraper driving member connected to the scraper to scrape the first roller and the second roller.

Furthermore, it also includes a cutter assembly, which includes a first roller, a second roller and a roller driving member, the first roller and the second roller are both transmission-connected with the roller driving member, the first roller is provided with a first cutter, the second roller is provided with a second cutter, the first roller and the second roller are arranged opposite to each other and the first cutter is opposite to the second cutter, and a belt feeding portion is provided between the first roller and the second roller to allow the raw material to pass after being rolled by the roller mechanism.

Furthermore, the first roller and the second roller are respectively provided with a heating module.

Furthermore, the roller assembly is provided with a wiping roller assembly, and the wiping roller assembly includes a wiping roller member, and the wiping roller assembly wiping the first roller and the second roller through the wiping roller member.

The beneficial effects of the utility model are:

The utility model can adjust the calendering rollers individually by arranging the first calendering roller assembly and the second calendering roller assembly, play the role of bending rollers, and better share the force brought by the rolling rollers; each group of calendering rollers is relatively independent, and can be independently adjusted according to the actual rolling effect during the production process, thereby improving the convenience of the system; at the same time, the first calendering roller assembly and the second calendering roller assembly are small in size, highly interchangeable, and easy to operate, which greatly reduces the maintenance cost and reduces the site occupation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a pole piece rolling device in an embodiment of the present application.

FIG. 2 is a cross-sectional view of a pole piece rolling device in an embodiment of the present application.

FIG. 3 is a schematic structural diagram of a roller assembly in an embodiment of the present application.

FIG. 4 is a schematic diagram of the structure of the second calendering roller assembly in an embodiment of the present application.

FIG. 5 is a schematic diagram of the structure of the first calendering roller assembly in an embodiment of the present application.

FIG6 is a cross-sectional view of the first calendering roller assembly in an embodiment of the present application.

FIG. 7 is a schematic diagram of the structure of the scraper assembly in an embodiment of the present application.

FIG. 8 is a schematic structural diagram of a tension roller assembly in an embodiment of the present application.

FIG. 9 is a schematic structural diagram of a cutter assembly in an embodiment of the present application.

FIG. 10 is a schematic structural diagram of the second wiping roller assembly in an embodiment of the present application.

FIG. 11 is a schematic structural diagram of a wiping roller assembly in an embodiment of the present application.

Description of reference numerals:

1-roller assembly; 101-first roller; 102-second roller; 103-spring;

2-first calendering roller assembly; 201-first calendering roller; 202-first movable end; 203-first bracket; 204-calendering roller shaft; 205-second driving member; 206-first guide member; 207-first movable member;

3-second calendering roller assembly; 301-second calendering roller; 302-second movable end; 303-second bracket; 304-second guide member;

4- first drive assembly;

5-roller gap adjustment assembly; 501-third driving member; 502-fixed arm; 503-first inclined block; 504-second inclined block;

6-scraper mechanism; 601-scraper driving member; 602-scraper; 603-rotating shaft; 604-rocker arm;

7-cutter mechanism; 701-first roller; 702-second roller; 703-roller driving member; 704-first cutter; 705-second cutter; 706-tape conveyor;

8-tension roller assembly; 801-mounting plate; 802-tension roller; 803-slider; 804-pulley; 805-counterweight;

9-wiping roller assembly; 901-wiping roller member; 902-anti-collision block; 903-mounting seat; 904-rotating shaft;

20 - second wiping roller assembly; 21 - alcohol pump; 22 - diverter block; 23 - wool felt; 24 - needle valve.

DETAILED DESCRIPTION

The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for exemplary explanations and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, the specific relationship represented can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, they can understand the specific meanings of the above terms in this application according to specific circumstances.

The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

Example 1

The present embodiment provides a pole piece rolling device, as shown in Figures 1-6, a pole piece rolling device, including: a roller assembly 1: including a first roller 101 and a second roller 102, a rolling channel for rolling raw materials is provided between the first roller 101 and the second roller 102; a calendering roller assembly: including a first calendering roller assembly 2 and a second calendering roller assembly 3, the first calendering roller assembly 2 is located on the side of the first roller 101 facing away from the rolling channel, and the second calendering roller assembly 3 is located on the side of the second roller 102 facing away from the rolling channel; the first calendering roller assembly 2 includes a first moving assembly and a plurality of first calendering rollers 201, the plurality of first calendering rollers 201 are in contact with the first roller 101, and the first moving assembly It includes a first movable end 202 corresponding to the plurality of first calendering rollers 201, the first calendering rollers 201 are transmission-connected to the first movable end 202 and reciprocate along the length direction of the first rolling roller 101; the second calendering roller assembly 3 includes a second movable assembly and a plurality of second calendering rollers 301, the plurality of second calendering rollers 301 are in contact with the second rolling roller 102, the second movable assembly includes a second movable end 302 corresponding to the plurality of second calendering rollers 301, the second calendering rollers 301 are transmission-connected to the second movable end 302 and reciprocate along the length direction of the second rolling roller 102; a first driving assembly 4: respectively transmission-connected to the first rolling roller 101 and the second rolling roller 102.

In this embodiment, the first calendering roller assembly 2 includes three first movable ends 202, each of which is provided with three first calendering rollers; the second calendering roller assembly 3 includes three second movable ends 302, each of which is provided with three second calendering rollers. Among them, the first movable end 202 can move along the length direction of the first roller 101, and the second movable end 302 can move along the length direction of the second roller 102, and each movable end can be adjusted separately. The first driving assembly 4 is a driving motor, which drives the first roller 101 and the second roller 102 to rotate to roll the electrode sheet. The first roller 101 and the second roller 102 are also connected to a mold temperature controller, which can better roll the raw materials. During the use of this embodiment, according to the width of different electrode sheets, the three first movable ends 202 and the three second movable ends 302 can be adjusted to the corresponding positions, and the driving electrolysis is turned on to drive the first roller 101 and the second roller 102 to roll the raw materials.

In this embodiment, by setting the first calendering roller assembly 2 and the second calendering roller assembly 3, the calendering rollers can be individually adjusted to play the role of bending rollers, so as to better share the force brought by the rolling rollers; each group of calendering rollers is relatively independent, and can be independently adjusted according to the actual rolling effect during the production process, thereby improving the convenience of the system. At the same time, the first calendering roller assembly 2 and the second calendering roller assembly 3 are small in size, highly interchangeable, and easy to operate, which greatly reduces maintenance costs and reduces site occupancy.

Furthermore, the first calendering roller assembly 2 also includes a first bracket 203, on which a first moving assembly is arranged, and the first moving assembly includes a calendering roller rotating shaft 904204 and a second driving member 205; the first movable end 202 is sleeved on the calendering roller rotating shaft 904204, the driving end of the second driving member 205 is movably connected to the first bracket 203 and can reciprocate along the length direction of the first bracket 203, and the other end of the second driving member 205 is arranged on the first movable end 202. The first bracket 203 is fixedly arranged, the driving end of the second driving member 205 is connected to the first bracket 203, and the other end is connected to the first movable end 202, and the first movable end 202 is relatively fixed so that it cannot slide easily on the rotating shaft 904. Among them, the second driving member 205 is an oil cylinder. During use, the oil cylinder extends out to move the calendering roller toward the first rolling roller 101, so that the first rolling roller 101 abuts against the first calendering roller 201. The first rolling roller 101 and the second rolling roller 102 will generate a large force during the rolling process, which will be transferred to the first calendering roller 201. At this time, the oil cylinder can bear this part of the pressure to ensure the rolling effect.

Furthermore, the first movable assembly also includes a first guide member 206 and a movable member movably connected to the first guide member 206, and the movable member is movably connected to the first movable end 202; the movable member cooperates with the first guide member 206 to drive the first movable end 202 to slide and move along the length direction of the calendering roller shaft 904204. The first guide member 206 is a slide rail, and the movable member is a handwheel assembly, which is mainly connected to the gear rack by the handwheel, and then connected to the movable member. The handwheel assembly is connected to the first movable end 202 through a telescopic rod. By setting the guide member and the movable member, it is more convenient to drive the first movable end 202 to slide on the calendering roller shaft 904204. At the same time, by rotating the handwheel to control its movement, the moving process can also be made more accurate and labor-saving. During use of this embodiment, according to the different widths of the pole pieces, the handwheel is rotated to make each first calendering roller 201 reach the corresponding position. It is understandable that the guide member and the movable member in this embodiment are not limited to the hand wheel and the slide rail, and other forms are also possible, as long as they can drive the first movable end 202 to move.

In some embodiments, a roll gap adjustment component 5 is provided between the first calendering roll component 2 and the first rolling roll 101. The roll gap adjustment component 5 can be used to adjust the roll gap between the first rolling roll 101 and the second rolling roll 102 so as to roll out pole pieces of different thicknesses.

Furthermore, the roller gap adjustment assembly 5 also includes a third driving member 501, a fixed arm 502, a first inclined block 503 and a second inclined block 504, the fixed arm 502 is fixedly set on one side of the first movable end 202, the first inclined block 503 is set on the first movable end 202 and is opposite to the fixed arm 502, the second inclined block 504 is located between the first inclined block 503 and the fixed arm 502, the inclination direction of the first inclined block 503 is opposite to the inclination direction of the second inclined block 504, the driving end of the third driving member 501 is connected to the second inclined block 504, and the third driving member 501 drives the second inclined block 504 to move so that the first movable end 202 moves. Among them, the third driving member 501 is a motor, which is connected to the second inclined block 504 through the rocker arm 604. The second inclined block 504 is arranged between the fixed arm 502 and the first inclined block 503. When the motor drives the second inclined block 504 to rotate, the second inclined block 504 rises relatively. At this time, the first movable end 202 is moved to the left by squeezing the first inclined block 503, thereby driving the first calendering roller to move to the left, and adjusting the roller gap of the roller. Furthermore, a spring 103 can be connected between the first movable end 202 and the first roller 101 to fit them tightly through the spring 103.

Furthermore, a roll gap detection sensor is provided between the first roll 101 and the second roll 102. In the present embodiment, the sensor is a capacitive sensor, and when the roll gap adjustment component 5 is adjusting the roll gap, the roll gap can be monitored at all times through the sensor.

The second calendering roller assembly 3 also includes a second bracket 303, the second movable assembly is fixedly mounted on the second bracket 303, the second movable assembly also includes a second guide 304, and the second calendering roller slides along the direction of the second guide 304 through the second movable end 302. The second bracket 303 is fixedly arranged on the other side of the second roller 102, the second guide 304 is a slide rail, and there can be multiple slide rails. In this embodiment, two slide rails are selected, and the two slide rails are respectively located on different surfaces of the second bracket 303, wherein the second movable end 302 is movably connected to one slide rail, and a movable member is connected to the other slide rail, and the movable member is selected as a hand wheel, which is connected to the second movable end 302 through a connecting arm. Rotating the hand wheel can drive the second movable end 302 to slide on the slide rail, and after the movement is completed, it is locked.

The present embodiment provides a pole piece rolling device. By setting a first calendering roller assembly 2 and a second calendering roller assembly 3, the calendering rollers can be adjusted individually to play a bending roll role and better share the force brought by the rollers; each group of calendering rollers is relatively independent, and can be independently adjusted according to the actual rolling effect during the production process, thereby improving the convenience of the system. At the same time, the first calendering roller assembly 2 and the second calendering roller assembly 3 are small in size, highly interchangeable, and easy to operate, which greatly reduces maintenance costs and reduces site occupancy; a roll gap adjustment assembly 5 is provided to adjust the roll gap of the two rollers, and a roll gap sensor is provided to monitor the adjustment process to make the adjustment more precise.

Example 2

This embodiment is similar to the embodiment 1, as shown in Fig. 7-9, except that it further comprises a scraper 602 mechanism 6, the scraper 602 mechanism 6 comprises a scraper 602 and a scraper 602 driving member 601 connected to the scraper 602, so as to scrape the first roller 101 and the second roller 102. The scraper 602 driving member 601 is a cylinder, and the scraper 602 mechanism 6 also comprises a rotating shaft 904603 and a rocker arm 604, wherein the output end of the driving cylinder is connected to the rocker arm 604, and the other end of the rocker arm 604 is connected to the end of the rotating shaft 904603, and the scraper 602 is fixedly arranged on the rotating shaft 904603. When the cylinder is extended, the rotating shaft 904603 will drive the scraper 602 to move upward, thereby scraping the first roller 101 and the second roller 102, which is more conducive to the stripping of the pole piece.

Furthermore, it also includes a cutter assembly, which includes a first roller 701, a second roller 702 and a roller driving member 703. The first roller 701 and the second roller 702 are both connected to the roller driving member 703. The first roller 701 is provided with a first cutter 704, and the second roller 702 is provided with a second cutter 705. The first roller 701 and the second roller 702 are arranged opposite to each other and the first cutter 704 and the second cutter 705 are opposite to each other. A belt conveyor 706 is provided between the first roller 701 and the second roller 702 to allow the raw materials rolled by the roller mechanism to pass through. The first cutter 704 and the second cutter 705 can adjust their positions on the first roller 701 and the second roller 702. The roller driving member 703 is a driving motor. The driving motor drives the first roller 701 and the second roller 702 to rotate, and then drives the first cutter 704 and the second cutter 705 to rotate, so as to cut off the redundant pole pieces and make them consistent in width.

In some embodiments, a tension roller 802 assembly 8 is also included. The tension roller 802 assembly 8 is mainly used to adjust the tension of the pole piece so that it can be rolled better. The tension roller 802 assembly 8 includes two mounting plates 801 arranged opposite to each other. Both mounting plates 801 are provided with slide rails and movable blocks movably connected to the slide rails. Both ends of the tension roller 802 are respectively connected to the movable blocks on the two mounting plates 801. The movable blocks can be moved along the height direction of the mounting plates 801. A pulley 804 is provided on the top of the mounting plate 801. A rope is wound around the pulley 804. One end of the rope is connected to the movable block, and the other end is connected to a counterweight 805. The counterweight 805 is used to adjust the height of the tension roller 802 and the tension of the pole piece.

Example 3

This embodiment is similar to the embodiment 1, as shown in Fig. 10-11, further, there is a wiping roller assembly 9 on the roller assembly 1, the wiping roller assembly 9 includes a wiping roller member 901, and the wiping roller assembly 9 wiping the first roller 101 and the second roller 102 through the wiping roller member 901. Among them, the wiping roller member 901 is a wiping plate, and the wiping roller assembly 9 is composed of a wiping plate, an anti-collision block 902, a mounting seat 903, and a rotating shaft 904. The wiping plate is mounted on the rotating shaft 904, and the two ends of the rotating shaft 904 have mounting seats 903 for mounting on the pole piece rolling device in this embodiment, and the anti-collision block 902 is mounted on the two ends of the wiping plate. When working normally, the wiping roller plate will press on the roller to wipe the roller to keep the roller clean.

In some embodiments, a second wiping roller assembly 209 is also provided on the calendering roller assembly. The second wiping roller assembly 209 includes an alcohol pump 21, a diverter block 22, a wool felt 23, and a needle valve 24, wherein the wool felt 23 is located on one side of the calendering roller. Alcohol is injected into the wool felt 23 through the alcohol pump 21 to wipe the calendering roller.

In this embodiment, the wiping roller assembly 9 is provided to wipe off the dust on the surface of the rolling roller and the calendering roller, thereby achieving automatic cleaning.

Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (10)

1. A pole piece rolling device, characterized by comprising: The roller assembly (1) comprises a first roller (101) and a second roller (102), wherein a rolling channel for rolling raw materials is provided between the first roller (101) 5 and the second roller (102); The calendering roller assembly comprises a first calendering roller assembly (2) and a second calendering roller assembly (3), wherein the first calendering roller assembly (2) is located on a side of the first roller (101) facing away from the rolling channel, and the second calendering roller assembly (3) is located on a side of the second roller (102) facing away from the rolling channel; The first calendering roller assembly (2) comprises a first movable assembly and a plurality of first calendering rollers (201), the plurality of first calendering rollers (201) being in contact with the first rolling roller (101), the first movable assembly comprising first movable ends (202) corresponding one by one to the plurality of first calendering rollers (201), the first calendering rollers (201) being transmission-connected to the first movable ends (202) and reciprocating along the length direction of the first rolling roller (101); The second calendering roller assembly (3) comprises a second movable assembly and a plurality of second calendering rollers (301), the plurality of second calendering rollers (301) are in contact with the second rolling roller (102), the second movable assembly comprises second movable ends (302) corresponding to the plurality of second calendering rollers (301) one by one, the second calendering rollers (301) are transmission-connected to the second movable ends (302), and reciprocate along the length direction of the second rolling roller (102); A first driving assembly (4) is respectively connected to the first roller (101) and the second roller (102) in driving connection. 2. The pole piece rolling device according to claim 1, characterized in that the first calendering roller assembly (2) further comprises a first bracket (203), a first moving assembly is arranged on the first bracket (203), and the first moving assembly comprises a calendering roller shaft (904) (204) and a second driving member (205); The first movable end (202) is sleeved on the calendering roller shaft (904), the driving end of the second driving member (205) is movably connected to the first bracket (203) and can reciprocate along the length direction of the first bracket (203), and the other end of the second driving member (205) is arranged on the first movable end (202). 3. The pole piece rolling device according to claim 2, characterized in that the first moving assembly further comprises a first guide member (206) and a movable member movably connected to the first guide member (206), and the movable member is movably connected to the first movable end (202); The movable member cooperates with the first guide member (206) to drive the first movable end (202) to slide along the length direction of the calendering roller shaft (904) (204). 4. The pole piece rolling device according to claim 2 is characterized in that a roll gap adjustment component (5) is provided between the first calendering roller component (2) and the first rolling roller (101). 5. The pole piece rolling device according to claim 4 is characterized in that the roller gap adjustment component (5) also includes a third driving member (501), a fixed arm (502), a first inclined block (503) and a second inclined block (504), the fixed arm (502) is fixedly arranged on one side of the first movable end (202), the first inclined block (503) is arranged on the first movable end (202) and is opposite to the fixed arm (502), the second inclined block (504) is located between the first inclined block (503) and the fixed arm (502), the inclination direction of the first inclined block (503) is opposite to the inclination direction of the second inclined block (504), the driving end of the third driving member (501) is connected to the second inclined block (504), and the third driving member (501) drives the second inclined block (504) to move so as to move the first movable end (202). 6. The pole piece rolling device according to claim 1 is characterized in that the second calendering roller assembly (3) also includes a second bracket (303), the second movable assembly is fixedly mounted on the second bracket (303), the second movable assembly also includes a second guide member (304), and the second calendering roller slides along the direction of the second guide member (304) through the second movable end (302). 7. The pole piece rolling device according to claim 1 is characterized in that it also includes a scraper (602) mechanism (6), wherein the scraper (602) mechanism (6) includes a scraper (602) and a scraper (602) driving member (601) connected to the scraper (602) to scrape the first roller (101) and the second roller (102). 8. The pole piece rolling device according to claim 1 is characterized in that it also includes a cutter assembly, the cutter assembly includes a first roller (701), a second roller (702) and a roller driving member (703), the first roller (701) and the second roller (702) are both connected to the roller driving member (703) by transmission, the first roller (701) is provided with a first cutter (704), the second roller (702) is provided with a second cutter (705), the first roller (701) and the second roller (702) are arranged opposite to each other and the first cutter (704) and the second cutter (705) are opposite to each other, and a belt conveyor (706) is provided between the first roller (701) and the second roller (702) to allow the raw material after being rolled by the rolling mechanism to pass through. 9. The pole piece rolling device according to claim 1, characterized in that a heating module is provided on each of the first rolling roller (101) and the second rolling roller (102). 10. The pole piece rolling device according to claim 1 is characterized in that a wiping roller assembly (9) is provided on the roller assembly (1) 3, and the wiping roller assembly (9) includes a wiping roller member (901), and the wiping roller assembly (9) wiping the first roller (101) and the second roller (102) through the wiping roller member (901).