CN219899624U - Calendering device and pole piece calendering system - Google Patents

Abstract

The utility model discloses a calendaring device and a pole piece calendaring system, wherein the calendaring device comprises: support, first roll-in subassembly and second roll-in subassembly. The first rolling assembly comprises a first driving device and a first roller, the first driving device is connected with the first roller, the diameter of the supporting roller is larger than that of the first roller, and the supporting roller is rotationally connected to the bracket and used for propping against the first roller. The second rolling assembly comprises a second driving device, a second roller and a first moving piece, wherein the second roller is rotationally connected to the first moving piece, and the second driving device is used for driving the second roller to move towards the first roller. When in operation, the first roller is propped against the supporting roller, so that the bending resistance of the first roller is improved. Meanwhile, as the first driving device is connected with the first roller, the supporting roller is driven by the first roller with smaller diameter, and the required power is smaller, so that the power requirement of the first driving device is reduced, and the manufacturing cost of the calendaring device is reduced.

Description

Calendering device and pole piece calendering system

Technical Field

The utility model relates to the technical field of batteries, in particular to a rolling device and a pole piece rolling system.

Background

In the manufacturing process of the lithium battery, a coating process is needed before the pole piece is rolled, and because the thickness difference exists between a pole piece coating area and an empty foil area, when the coating area is extended due to rolling, the empty foil area does not correspondingly extend, and the pole piece is wrinkled. In order to solve the problem that the pole piece is wrinkled, an extension device is adopted to pre-roll the pole piece in advance, however, because the empty foil area is usually narrower, one roller needs to be set narrower, and the other roller is stressed more locally and is easy to bend, and in the prior art, a large-diameter press roller is selected for rolling, but the load of a motor is increased due to the large-diameter press roller, so that the cost of the motor is increased, and the cost of equipment is increased.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a rolling device which can be used for a pole piece rolling system and can reduce the manufacturing cost of the pole piece rolling system.

The utility model also provides a pole piece calendaring system comprising the calendaring device.

According to an embodiment of the first aspect of the present utility model, a rolling apparatus includes: support, first roll-in subassembly and second roll-in subassembly.

The first roll-in subassembly includes first drive arrangement, first roller and backing roll, first drive arrangement connects first roller is used for the drive first roller rotates, the diameter of backing roll is greater than the diameter of first roller, the backing roll rotate connect in the support is used for supporting first roller, the second roll-in subassembly includes second drive arrangement, second roller and first moving member, the second roller rotate connect in first moving member, and be located one side of first roller deviating from the backing roll, second drive arrangement is used for the drive the second roller orientation first roller removes.

The calendaring device provided by the embodiment of the utility model has at least the following beneficial effects:

the diameter of the supporting roller is larger than that of the first roller and is positioned on one side of the first roller, which is away from the second roller, and is used for supporting the first roller. Therefore, when the empty foil region of the pole piece is calendered by the first roller and the second roller, the first roller is abutted against the supporting roller, thereby improving the bending resistance of the first roller. Meanwhile, as the first driving device is connected with the first roller, the supporting roller is driven through the first roller transmission with smaller diameter, and compared with the direct driving of the supporting roller through the first driving device, the power required by the first driving device is smaller, so that the power requirement of the first driving device is reduced, and the manufacturing cost of the calendaring device of the embodiment is reduced.

According to some embodiments of the utility model, the first rolling assembly further comprises a connecting piece and a locking piece, the connecting piece is provided with a connecting hole, the connecting hole is provided with a profile extending along the direction from the first roller to the supporting roller, the first roller is rotatably connected with the connecting piece, the locking piece penetrates through the connecting hole and is connected with the bracket, and the locking piece can slide along the connecting hole and is locked with the bracket.

According to some embodiments of the utility model, the first roller is rotatably connected to the bracket and is movable relative to the bracket in a direction from the first roller to the support roller.

According to some embodiments of the utility model, the calendaring apparatus further comprises a support connected to the bracket and a guide connected to the support, the guide having a guide slot extending in a direction from the second roller to the first roller, the first moving member having a guide portion slidably engaged with the guide slot.

According to some embodiments of the utility model, the second driving device is any one of a hydraulic cylinder, a cylinder and an electric cylinder;

the second rolling assembly comprises a universal joint, one end of the universal joint is connected with the second driving device, and the other end of the universal joint is connected with the first moving piece; or,

the second rolling assembly further comprises a propping piece, one end of the propping piece is connected to the second driving device, and the other end of the propping piece is provided with a spherical surface and is used for propping the first moving piece.

According to some embodiments of the utility model, the calendaring apparatus further comprises a stabilizing assembly including a third driving device and a stabilizing piece, wherein the stabilizing piece is located at one end of the first moving piece, which is away from the guiding piece, and the third driving device is connected to the stabilizing piece and is used for driving the stabilizing piece to move towards the first moving piece.

According to some embodiments of the utility model, the calendaring apparatus further comprises a support connected to the bracket, and the first moving member is connected to the support and is capable of moving relative to the support in an axial direction of the first roller.

According to some embodiments of the utility model, the calendaring apparatus further comprises a fourth driving device, the second rolling assembly further comprises a second moving member, the second driving device and the first moving member are both connected to the second moving member, and the fourth driving device is connected to the second moving member and is used for driving the second moving member to move along the axial direction of the first roller.

According to some embodiments of the present utility model, the rolling device includes a plurality of second rolling assemblies, the second rolling assemblies are distributed along the axial direction of the first roller, the fourth driving device includes a ball screw, a ball nut and a driving motor, the ball screw is connected to the bracket and extends along the axial direction of the first roller, the ball nut is provided with a plurality of ball nuts, and the ball nuts are respectively connected to the second moving parts of the second rolling assemblies and sleeved on the ball screw;

the driving motors are provided with a plurality of driving nuts, and the driving nuts are respectively connected with the ball nuts and used for driving the ball nuts to rotate; or,

the driving motor is arranged in one mode, and is connected to the ball screw and used for driving the ball screw to rotate.

According to a second aspect of the present utility model, a pole piece calendaring system includes: unreeling roller, wind-up roller, main roller subassembly and calendering device of the embodiment of the first aspect.

The unwinding roller is used for discharging the pole piece, the main roller assembly is located between the discharging roller and the winding roller and used for rolling the coating area of the pole piece, the rolling device is arranged at the upstream and/or downstream of the main roller assembly along the moving direction of the pole piece, and the winding roller is used for collecting the rolled pole piece.

The pole piece calendaring system provided by the embodiment of the utility model has at least the following beneficial effects:

with the calendaring device according to the embodiment of the first aspect, the diameter of the supporting roller of the calendaring device is larger than that of the first roller, and the supporting roller is located on one side, away from the second roller, of the first roller and is used for abutting against the first roller. Therefore, when the empty foil region of the pole piece is calendered by the first roller and the second roller, the first roller is abutted against the supporting roller, thereby improving the bending resistance of the first roller. Meanwhile, as the first driving device is connected with the first roller, the supporting roller is driven through the first roller transmission with smaller diameter, and compared with the method of directly driving the supporting roller through the first driving device, the first driving device in the embodiment requires smaller power, so that the power requirement of the first driving device is reduced, and the manufacturing cost of the pole piece calendaring system of the embodiment is reduced.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view showing a structure of a calendaring apparatus according to an embodiment of the utility model;

FIG. 2 is an enlarged schematic view of area A of FIG. 1;

FIG. 3 is a schematic view of the second rolling assembly and the support member of FIG. 1;

FIG. 4 is a schematic view of FIG. 3 from another perspective;

FIG. 5 is an enlarged schematic view of area B of FIG. 4;

FIG. 6 is a schematic view of the first rolling assembly, the second rolling assembly and the stabilizing assembly of FIG. 1;

fig. 7 is a schematic structural view of a pole piece calendaring system according to a second aspect of the utility model.

Reference numerals:

calender 1000, main roller assembly 2000, unwind roller 3000, wind-up roller 4000;

a bracket 100;

a first rolling assembly 200, a first roller 210, a first driving device 220, a supporting roller 230, a connecting member 240, and a connecting hole 241;

a second rolling assembly 300, a second roller 310, a second driving device 320, a first moving member 330, a second moving member 340, a holding member 350, a spherical surface 351;

a fourth driving device 400, a ball screw 410, a ball nut 420, and a driving motor 430;

support 500, slide rail 600, slider 700, guide 800;

a stabilizing assembly 900, a stabilizing member 910, and a third driving device 920.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Fig. 1 is a schematic structural diagram of a rolling apparatus according to an embodiment of the present utility model, and referring to fig. 1, a rolling apparatus 1000 according to a first aspect of the present utility model includes: a stand 100, a first roll assembly 200 and a second roll assembly 300.

The first rolling assembly 200 includes a first driving device 220, a first roller 210, and a supporting roller 230. The first driving device 220 is connected to the first roller 210, and is used for driving the first roller 210 to rotate. The second rolling assembly 300 includes a second driving device 320, a second roller 310, and a first moving member 330. The second roller 310 is rotatably connected to the first moving member 330 and is located at a side of the first roller 210 facing away from the support roller 230. The second driving device 320 is used to drive the second roller 310 to move toward the first roller 210. For example, the support roller 230 and the first roller 210 are fixedly mounted on the bracket 100, and the radial side surface of the first roller 210 abuts against the radial side surface of the support roller 230. In operation, the pole piece passes through the gap between the first roller 210 and the second roller 310, and the first driving device 220 drives the first roller 210 to rotate, and the support roller 230 rotates therewith. The support roller 230 is required to rotate therewith in order to reduce the obstruction of the rotation of the first roller 210 by the support roller 230, thereby making the first roller 210 easier to be driven and reducing the power consumption. The second driving device 320 drives the first moving member 330 to move towards the first roller 210 to abut against the empty foil area of the pole piece, so as to roll the empty foil area of the pole piece. Meanwhile, the first roller 210 is abutted against the support roller 230, so that the bending resistance of the first roller 210 is improved, the first roller 210 is prevented from bending, the rolling precision of the pole piece is improved, and the quality of the pole piece is improved. Meanwhile, since the first driving device 220 is connected to the first roller 210, the support roller 230 is driven by the transmission of the first roller 210 having a smaller diameter, and the support roller 230 and the first roller 210 form a decelerator structure, so that the support roller 230 is driven more easily. Therefore, the power required for the first driving device 220 in this embodiment is smaller than that required for directly driving the large-diameter backup roller 230 by the first driving device 220, thereby reducing the power requirement of the first driving device 220 to reduce the manufacturing cost of the rolling device 1000 of this embodiment.

In addition, it can be appreciated that since the backup roll 230 is more easily driven, the linear speed of the backup roll 230 and the first roll 210 can be accelerated to be equal to the pole piece conveying speed during the starting process of the device, so that the first roll 210 and the pole piece are prevented from slipping, and the quality of the pole piece is improved. Similarly, the first driving device 220 can more easily stop the support roller 230 when the apparatus is stopped. Therefore, compared with the method that the first driving device 220 directly drives the large-diameter support roller 230 to roll the pole piece, the embodiment can also quickly start and stop on the premise that the first roller 210 has certain bending resistance, so that the first roller 210 is prevented from wearing the pole piece.

Referring to fig. 1 and 2, fig. 2 is an enlarged schematic view of a region a in fig. 1, and the first rolling assembly 200 further includes a connecting member 240 and a locking member (not shown) according to the above embodiment. The connection member 240 has a connection hole 241, and the connection hole 241 has a profile extending in a direction from the first roller 210 to the support roller 230. The first roller 210 is rotatably connected to the connection member 240, and the locking member is inserted through the connection hole 241 and connected to the bracket 100, and can slide along the connection hole 241 and be locked to the bracket 100. Specifically, in the assembly process of the apparatus, the support roller 230 is first mounted on the bracket 100, and then the first roller 210 is locked on the bracket 100 by the locking member, and since the connection hole 241 has a profile extending in a direction from the first roller 210 to the support roller 230. Accordingly, the first roller 210 can be adjusted toward the support roller 230 during the installation process to ensure that the radial side surface of the first roller 210 abuts against the radial side surface of the support roller 230, thereby improving the reliability of the rolling apparatus 1000 of the present embodiment.

In some embodiments, the first roller 210 is rotatably coupled to the bracket 100 and is movable relative to the bracket 100 in a direction from the first roller 210 to the support roller 230 to enable the first roller 210 to float in the direction from the first roller 210 to the support roller 230. Thus, during operation, the first roller 210 is separated from the support roller 230 by gravity during initial start-up of the apparatus. As the second driving device 320 drives the second roller 310 to move towards the first roller 210, the second roller 310 abuts against the pole piece and pushes the first roller 210 towards the supporting roller 230, so that the first roller 210 abuts against the supporting roller 230, and the supporting roller 230 abuts against the first roller 210, so that the bending resistance of the first roller 210 is improved.

It will be appreciated that during start-up of the apparatus, the power of the first driving means 220 has been raised to a certain value before the first roller 210 contacts the support roller 230, so that it is easier to rotate the support roller 230. During a machine shutdown, the second drive 320 drives the second roller 310 away from the first roller 210. The first roller 210 moves with it to be separated from the support roller 230 by gravity so that the first driving device 220 is not affected by the support roller 230 during braking, thereby making it easier for the first roller 210 to stop.

Referring to fig. 3, fig. 3 is a schematic structural view of the second rolling assembly and the supporting member in fig. 1, and a part of the structure is not shown in fig. 3 for making the drawing more concise. In some embodiments, calendaring apparatus 1000 may also include support 500 and guide 800. The guide 800 is connected to the support 500, the guide 800 has a guide groove, and the first moving member 330 has a guide portion slidably engaged with the guide groove to move the first moving member 330 in the direction from the first roller 210 to the second roller 310. In one aspect, stability of the second roller 310 during movement is improved. On the other hand, the pose accuracy of the first moving member 330 can be improved to improve the pose accuracy of the connection to the second roller 310 such that the axis of the first roller 210 is approximately parallel to the axis of the second roller 310. Thereby making the gap size formed between the first roller 210 and the second roller 310 relatively uniform. Therefore, after the hollow foil area of the pole piece is rolled, the thickness of the pole piece is more uniform, and the quality of the pole piece is improved.

Referring to fig. 4 and 5, fig. 4 is another view of fig. 3, fig. 5 is an enlarged view of a region B of fig. 4, and the second driving device 320 is any one of a hydraulic cylinder, an air cylinder, or an electric cylinder based on the above-described embodiment. That is, the second driving device 320 has a telescopic rod. It will be appreciated that during the installation process, errors are unavoidable, i.e. that the second driving device 320 is positioned at a certain deviation from the guiding element 800, resulting in that the telescopic direction of the telescopic rod of the second driving device 320 has an angle with the moving direction of the first moving element 330. Based on this, the second rolling assembly 300 in this embodiment includes a universal joint, one end of which is connected to the second driving device 320, and the other end of which is connected to the first moving member 330. Therefore, during operation, the telescopic direction of the telescopic rod of the second driving device 320 can have a certain angle with the moving direction of the first moving member 330, so as to prevent the telescopic rod from being subjected to a larger bending stress, thereby improving the service life of the second driving device 320. Similarly, in some embodiments, the second rolling assembly 300 further includes a holding member 350 (as shown in fig. 4 and 5), one end of the holding member 350 is connected to the second driving device 320, and the other end has a spherical surface 351 for holding the moving member. When the spherical surface 351 abuts against the first moving member 330, the abutting member 350 can rotate in space relative to the first moving member 330, so that the telescopic rod of the second driving device 320 can have a certain angle with the moving direction of the first moving member 330, the telescopic rod is prevented from being subjected to larger bending stress, and the service life of the second driving device 320 is prolonged.

Referring to fig. 6, fig. 6 is a schematic structural diagram of the first rolling assembly, the second rolling assembly and the stabilizing assembly in fig. 1, and the rolling apparatus 1000 further includes the stabilizing assembly 900 according to the above embodiment. The stabilizing assembly 900 includes a stabilizing member 910 and a third driving device 920, the stabilizing member 910 being located on a side of the first moving member 330 facing away from the guide member 800. The third driving device 920 is connected to the stabilizing member 910, and is used for driving the stabilizing member 910 to move towards the first moving member 330. Specifically, during operation, the third driving device 920 drives the stabilizing member 910 to move toward the first moving member 330, so that the stabilizing member 910 can abut against the surface of the first moving member 330, and the first moving member 330 is clamped between the stabilizing member 910 and the guiding member 800, thereby improving the stability of the first moving member 330. Thereby improving the stability of the second roller 310 during operation to ensure the quality of the pole piece.

Referring to fig. 1 and 3, in some embodiments, the calendaring apparatus 1000 further includes a support 500. The support 500 is connected to the bracket 100, and the first moving member 330 is connected to the support 500 and is movable relative to the support 500 in the axial direction of the first roller 210 to adjust the distance between the first moving members 330. So that the second roller 310 in the calendaring apparatus 1000 of the present embodiment can be adjusted according to the position of the empty foil region of the pole piece, thereby improving the applicability of the calendaring apparatus 1000 of the present embodiment. For example, the calendaring apparatus 1000 of the present embodiment further includes a sliding rail 600 and a sliding block 700 (as shown in fig. 3), wherein the sliding rail 600 is connected to the supporting member 500 and extends along the axial direction of the first roller 210, and the sliding block 700 is matched with the sliding rail 600 and is connected to the guiding member 800. The calendaring apparatus 1000 further includes a fourth driving device 400 (as shown in fig. 1), the second rolling assembly 300 further includes a second moving member 340, the second driving device 320 and the first moving member 330 are both connected to the second moving member 340, and the fourth driving device 400 is connected to the second moving member 340 for driving the second moving member 340 to move along the axial direction of the first roller 210. Therefore, the synchronous movement of the second driving device 320 and the first moving member 330 is realized, and the driving devices are not required to be arranged separately for driving the first driving device 220 and the first moving member 330, so that the structure of the calendaring device 1000 is simpler and the cost is lower.

Referring to fig. 3, in some embodiments, the calendaring apparatus 1000 includes a plurality of second rolling assemblies 300 (as shown in fig. 3), the plurality of second rolling assemblies 300 being distributed along the axial direction of the first roller 210, so that the calendaring apparatus 1000 of the present embodiment can be adapted to roll pole pieces having a plurality of empty foil regions, improving the applicability of the calendaring apparatus 1000. The fourth driving device 400 includes a ball screw 410, a plurality of ball nuts 420, and a plurality of driving motors 430 (shown in fig. 3). The ball screw 410 is connected to the bracket 100 and extends in the axial direction of the first roller 210, and the plurality of ball nuts 420 are respectively connected to the second moving members 340 of the second roller assemblies 300 and are sleeved on the ball screw 410. The plurality of driving motors 430 are respectively connected to the plurality of ball nuts 420, and are used for driving the ball nuts 420 to rotate so as to drive the second moving member 340 to move along the axial direction of the first roller 210, thereby adjusting the positions of the second rollers 310 and improving the applicability of the rolling device of the embodiment. Further, in some embodiments, only one driving motor 430 may be provided, and the driving motor 430 is connected to the ball screw 410 to drive the ball screw 410 to rotate, thereby adjusting the position of each second roller 310. Further, when the second rolling assembly 300 is provided with two, the ball screw 410 screw has a first external thread and a second external thread, and the first external thread and the second external thread are oppositely threaded. Two ball nuts 420 are engaged with the first external thread and the second external thread, respectively. Therefore, when the ball screw 410 is rotated, the two second rollers 310 are close to each other or far away from each other, so as to adjust the distance between the two second rollers 310, so that the two second rollers 310 can roll pole pieces with different widths, thereby improving the applicability of the rolling device 1000 of the embodiment.

It should be noted that the arrangement of two second rolling assemblies 300 in fig. 3 should not be construed as a sole limitation of the present embodiment, and any number of three, four, five, etc. may be arranged according to actual needs.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a pole piece rolling system according to a second aspect of the present utility model, the pole piece rolling system according to the second aspect of the present utility model includes: unwind roll 3000, wind-up roll 4000, and main roll assembly 2000.

The unreeling roller 3000 is used for unreeling the pole piece, and the reeling roller 4000 is used for collecting the pole piece. The main roller assembly 2000 is located between the unwind roller 3000 and the wind-up roller 4000 for rolling the coating area of the pole piece. The calendaring apparatus 1000 is disposed upstream or downstream of the main roller assembly 2000 in the direction of movement of the pole pieces. Alternatively, the calendaring apparatus 1000 is provided in two, upstream and downstream of the main roller assembly 2000, respectively. Specifically, during operation, the blank foil area and the coated area of the pole piece are rolled using the calendaring apparatus 1000 and the main roller assembly 2000, respectively. So that the thickness of the coating area and the thickness of the empty foil area of the rolled pole piece are nearly consistent, the wrinkling degree of the pole piece is reduced, and the possibility of pole piece fracture is reduced. The diameter of the supporting roller 230 of the calendaring device 1000 is larger than that of the first roller 210, and is located on one side of the first roller 210 away from the second roller 310, so as to be used for abutting against the first roller 210. Accordingly, when the empty foil region of the pole piece is rolled with the first roller 210 and the second roller 310, the first roller 210 is abutted against the support roller 230, thereby improving the bending resistance of the first roller 210. Meanwhile, since the first driving device 220 is connected to the first roller 210, the supporting roller 230 is driven by the transmission of the first roller 210 with a smaller diameter, and compared with the direct driving of the supporting roller 230 by the first driving device 220, the first driving device 220 of the present embodiment requires less power, so that the power requirement of the first driving device 220 is reduced, and the manufacturing cost of the pole piece calendaring system of the present embodiment is reduced.

It should be noted that, because all the technical features of the rolling apparatus 1000 according to the first embodiment are adopted in this embodiment, this embodiment has all the advantages brought by the first embodiment, and will not be described here again.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Calendering device, its characterized in that includes:

a bracket;

the first rolling assembly comprises a first driving device, a first roller and a supporting roller, wherein the first driving device is connected with the first roller and used for driving the first roller to rotate, the diameter of the supporting roller is larger than that of the first roller, and the supporting roller is rotatably connected with the bracket and used for propping against the first roller;

the second rolling assembly comprises a second driving device, a second roller and a first moving part, wherein the second roller is rotationally connected to the first moving part and is positioned on one side of the first roller, which is away from the supporting roller, and the second driving device is used for driving the second roller to move towards the first roller.

2. The calendaring apparatus according to claim 1, wherein said first roll-in assembly further comprises a connecting member having a connecting hole with a profile extending in a direction from said first roll to said support roll, said first roll rotatably connected to said connecting member, and a locking member penetrating said connecting hole and connecting said bracket, said locking member being slidable along said connecting hole and locked to said bracket.

3. The calendaring apparatus of claim 1, wherein the first roller is rotatably coupled to the support and is movable relative to the support in a direction from the first roller to the support roller.

4. The calendaring apparatus of claim 1, further comprising a support connected to the bracket and a guide connected to the support, the guide having a guide slot extending in a direction from the second roller to the first roller, the first moving member having a guide portion that is a sliding fit with the guide slot.

5. The calendaring apparatus according to claim 4, wherein the second driving means is any one of a hydraulic cylinder, an air cylinder or an electric cylinder;

the second rolling assembly comprises a universal joint, one end of the universal joint is connected with the second driving device, and the other end of the universal joint is connected with the first moving piece; or,

the second rolling assembly further comprises a propping piece, one end of the propping piece is connected to the second driving device, and the other end of the propping piece is provided with a spherical surface and is used for propping the first moving piece.

6. The calendaring apparatus of claim 5, further comprising a stabilizing assembly including a third drive device and a stabilizing member, the stabilizing member being located at an end of the first moving member facing away from the guide, the third drive device being coupled to the stabilizing member for driving the stabilizing member to move toward the first moving member.

7. The calendaring apparatus of claim 1, further comprising a support coupled to the frame, the first moving member coupled to the support and movable relative to the support in an axial direction of the first roller.

8. The calendaring apparatus of claim 7, further comprising a fourth driving device, wherein the second roll assembly further comprises a second moving member, wherein the second driving device and the first moving member are both connected to the second moving member, and wherein the fourth driving device is connected to the second moving member for driving the second moving member to move in an axial direction of the first roll.

9. The calendaring apparatus according to claim 8, wherein said calendaring apparatus comprises a plurality of said second rolling assemblies distributed along an axial direction of said first roller, said fourth driving means comprises a ball screw connected to said bracket and extending along an axial direction of said first roller, a ball nut provided with a plurality of said ball nuts connected to said second moving members of each of said second rolling assemblies and sleeved on said ball screw;

the driving motors are provided with a plurality of driving nuts, and the driving nuts are respectively connected with the ball nuts and used for driving the ball nuts to rotate; or,

the driving motor is arranged in one mode, and is connected to the ball screw and used for driving the ball screw to rotate.

10. The pole piece calendaring system is characterized by comprising;

the unreeling roller is used for unreeling the pole piece;

the winding roller is used for collecting the rolled pole piece;

the main roller assembly is positioned between the discharging roller and the winding roller and is used for rolling the coating area of the pole piece;

the calendaring apparatus of any of claims 1-9, located upstream and/or downstream of the main roller assembly in a direction of movement of the pole piece.