CN218931231U

CN218931231U - Pinch roller device for improving flatness of coating winding pole piece

Info

Publication number: CN218931231U
Application number: CN202223318707.6U
Authority: CN
Inventors: 叶爽
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-04-28
Anticipated expiration: 2032-12-05

Abstract

The utility model provides a pinch roller device for improving flatness of a coated winding pole piece, and belongs to the technical field of lithium battery production equipment. The pinch roller device comprises a driving device, a base carrier roller and a plurality of pinch roller assemblies. The base carrier roller is used for setting up in the top of coating machine wind-up roll and be on a parallel with the base carrier roller, and the one end and the drive arrangement transmission of base carrier roller are connected, and drive arrangement is configured to the rotation of base carrier roller around the axis of can driving. The pinch roller subassembly includes pinch roller, pinch roller support and connecting the body of rod, and the pinch roller passes through pinch roller support and connects in the one end of connecting the body of rod, and the axis and the base bearing roller of pinch roller are parallel, and the other end of connecting the body of rod slidable cup joints on the base bearing roller, and a plurality of pinch roller subassemblies follow the length direction interval arrangement of base bearing roller. The flattening processing of the bulging edges can be realized on the flatness of the pole pieces with various different width sizes, and the whole occupied area of the coating and rolling production line is reduced.

Description

Pinch roller device for improving flatness of coating winding pole piece

Technical Field

The utility model relates to the technical field of lithium battery production equipment, in particular to a pinch roller device for improving flatness of a coated winding pole piece.

Background

The coating machine is mainly used for the surface coating process production of films, papers and the like, and the equipment is used for coating a layer of specially manufactured glue, paint or ink and the like with specific functions on a coiled base material, baking the base material at high temperature and coiling the base material. And at the winding station, the coated pole piece film layer is wound on the winding roller through the rotation of the winding roller.

Due to the slurry and the base material, the edge-bulging phenomenon is often caused on two sides of the film layer coated on the base material, the quality is greatly affected, and the edge-bulging film layer is very easy to wrinkle, fold and roll unevenly along with the increase of the winding diameter when being wound on the winding roller, and even the problem of breakage of the tape is caused by edge cracking. In the related art, after a substrate subjected to coating processing is dried by an oven to form a pole piece, a pressing wheel is additionally arranged on a subsequent tape path, and the pole piece is pressed and flattened by one surface of the foil coated with a slurry film layer, so that the edges of the two sides of the film layer are relieved.

The flatness of the pole piece film layer is adjusted by adopting a mode of arranging the pressing wheels in the related technology, and the positions of the pressing wheels which are correspondingly arranged at the drum edges possibly exist on two sides of the film layer on the same tape path are relatively fixed for the battery pole piece of one type. When the battery pole pieces of different types are required to be processed, due to the difference between the width of the base material and the coating width of the sizing agent, a plurality of different pressing stations are required to be arranged, or a plurality of groups of pressing stations are arranged by extending a tape conveying path, so that the whole occupied area of a production line is increased, and the production cost is increased.

Disclosure of Invention

The embodiment of the utility model provides a pinch roller device for improving the flatness of a coating winding pole piece, which can realize the edge-bulging flattening processing of the flatness of pole pieces with various different width sizes and reduce the overall occupied area of a coating winding production line. The technical scheme is as follows:

the embodiment of the utility model provides a pinch roller device for improving flatness of a coated winding pole piece, which comprises the following components: a driving device, a base idler roller and a plurality of pinch roller components,

the base carrier roller is arranged above the winding roller of the coating machine and is parallel to the base carrier roller, one end of the base carrier roller is in transmission connection with the driving device, and the driving device is configured to drive the base carrier roller to rotate around an axis;

the pinch roller subassembly includes pinch roller, pinch roller support and connection body of rod, the pinch roller passes through the pinch roller support connect in the one end of connection body of rod, the axis of pinch roller with the base bearing roller is parallel, the other end of connection body of rod slidable cup joint in on the base bearing roller, a plurality of pinch roller subassemblies are followed the length direction interval arrangement of base bearing roller.

Optionally, the connecting rod body includes swing arm and transition axle, the one end of swing arm cup joint in on the base bearing roller, pinch roller support fixed connection in the one end of transition axle, the other end of transition axle with the other end of swing arm can dismantle and be connected.

Optionally, the other end of swing arm is provided with a plurality of first bolt holes, a plurality of first bolt holes are followed the even interval arrangement of length direction of swing arm, the other end of transition axle be provided with a plurality of second bolt holes of first bolt hole assorted, a plurality of second bolt holes are followed the even interval arrangement of length direction of transition axle, adjacent two interval between the first bolt hole equals with adjacent two interval between the second bolt hole.

Optionally, a locking mechanism for fixing the connecting rod body is arranged at the joint of the swing arm and the base carrier roller.

Optionally, the pinch roller support includes wheel seat and support connecting piece, the pinch roller rotationally connect in on the wheel seat, the support connecting piece includes intermediate lamella and two linking arms, the intermediate lamella set up in the top plane of transition axle and with transition axle fixed connection, the one end of two linking arms connect perpendicularly in the both ends of intermediate lamella and for transition axle symmetrical arrangement, the other end of two linking arms with the wheel seat is connected.

Optionally, the pinch roller device for improving the flatness of the coated winding pole piece further comprises a pinch roller deflection limiting block, the pinch roller deflection limiting block is installed on the top plane of the transition shaft and provided with a limiting surface parallel to the base carrier roller, a limiting flange is arranged on the limiting surface in a protruding mode, the limiting surface is abutted to one side end face of the middle plate, which is close to the base carrier roller, of the middle plate, and the limiting flange is abutted to one side plate face of the transition shaft, which is opposite to the middle plate.

Optionally, the pinch roller device for improving flatness of the coated winding pole piece further comprises a plurality of balancing weights, at least one of the plurality of balancing weights is detachably mounted on the swing arm, and weights of the plurality of balancing weights are different.

Optionally, the pinch roller device for improving flatness of the coated winding pole piece further comprises a lifting mechanism, wherein the lifting mechanism is connected to the other end of the base carrier roller, and the lifting mechanism is configured to drive the base carrier roller, the driving device and the pinch roller assemblies to lift in the vertical direction.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that at least:

before coating and winding, the relative positions of the connecting rod bodies in the plurality of pressing wheel assemblies can be adjusted in the length direction of the base carrier roller, so that the distance between two adjacent connecting rod bodies is matched with the width dimension of the pole piece base material to be coated and processed. And then coating and drying by using a coating machine, and winding the pole piece substrate coated with the film layer by using a winding roller of the coating machine. The base carrier roller is driven to rotate by the driving device, and then the connecting rod bodies of the plurality of pressing wheel assemblies are driven to rotate together around the axis of the connecting rod bodies, so that the pressing wheels at one end of the connecting rod bodies are pressed down along with the pressing wheel support, two adjacent pressing wheels can be respectively pressed down on the winding roller, two sides of a film layer in the winding process are pressed, the film layer is tightly pressed on a pole piece substrate wound on the winding roller of the coating machine, two side drum edges of the film layer are effectively relieved, and wrinkling, folding and uneven winding phenomena during winding are avoided.

Meanwhile, pole pieces corresponding to different width sizes can be adaptively adjusted by adjusting the relative positions of the plurality of pressing wheel assemblies on the base carrier roller so as to realize the edge-bulging flattening processing of pole pieces with different width sizes, a plurality of production lines are not required to be arranged, or a plurality of groups of pressing wheels are arranged on the same tape conveying path to be correspondingly processed, so that the whole occupied area of the coating and winding production line is effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic top view of a pinch roller device for improving flatness of a coated rolled pole piece according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a front view structure of a pinch roller device for improving flatness of a coated rolled pole piece according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a partial structure of a connecting rod according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a puck support and puck configuration provided by embodiments of the present utility model;

fig. 5 is a schematic structural diagram of a pinch roller deflection limiting block according to an embodiment of the present utility model.

In the figure:

1-a driving device; 2-a base idler; 3-a pinch roller assembly; 4-balancing weight; 5-a lifting mechanism; 31-pressing wheel; 32-a pinch roller bracket; 33-connecting the rod bodies; 34-a pinch roller deflection limiting block; 321-wheel seats; 322-bracket connection; 331-swinging arm; 332-transition shaft; 341-a limiting surface; 3221-an intermediate plate; 3222-a connecting arm; 3311—first bolt hole; 3312—a locking mechanism; 3313-locking handle; 3321—a second bolt hole; 3411—a limit flange; an m-coater wind-up roll; n-pole piece base material; n 1-film layer.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic top view structure of a pinch roller device for improving flatness of a coated rolled pole piece according to an embodiment of the present utility model. Fig. 2 is a schematic diagram of a front view structure of a pinch roller device for improving flatness of a coated rolled pole piece according to an embodiment of the present utility model. Fig. 3 is a schematic partial structure of a connecting rod according to an embodiment of the present utility model. FIG. 4 is a schematic diagram of a puck support and puck configuration provided by embodiments of the present utility model. Fig. 5 is a schematic structural diagram of a pinch roller deflection limiting block according to an embodiment of the present utility model. As shown in fig. 1 to 5, in practice, the applicant provides a pinch roller device for improving flatness of a coated wound pole piece, comprising a driving device 1, a base roller 2 and a plurality of pinch roller assemblies 3.

The base carrier roller 2 is used for being arranged above the winding roller m of the coating machine and is parallel to the base carrier roller 2. One end of the base idler 2 is in driving connection with a drive device 1, the drive device 1 being configured to be able to drive the base idler 2 in rotation about an axis.

Pinch roller assembly 3 includes pinch roller 31, pinch roller bracket 32, and connecting rod 33. The pinch roller 31 is connected to one end of the connecting rod body 33 through a pinch roller bracket 32, and the axis of the pinch roller 31 is parallel to the base carrier roller 2. The other end of the connecting rod body 33 is slidably sleeved on the base carrier roller 2, and the plurality of pressing wheel assemblies 3 are arranged at intervals along the length direction of the base carrier roller 2.

In the embodiment of the utility model, the whole structure of the pinch roller device is arranged obliquely above the winding roller m of the coating machine at the rear end of the coating machine. Before coating and winding, the relative positions of the connecting rod bodies 33 in the plurality of pressing wheel assemblies 3 can be adjusted in the length direction of the base carrier roller 2, so that the distance between two adjacent connecting rod bodies 33 is matched with the width dimension of the pole piece substrate n to be coated and processed. And then, when the coating machine is used for coating and drying, and the coating machine winding roll m is used for winding the pole piece substrate n coated with the film layer n 1. The base carrier roller 2 is driven to rotate by the driving device 1, and then the connecting rod bodies 33 of the plurality of pressing wheel assemblies 3 are driven to rotate together around the axis, so that the pressing wheels 31 positioned at one end of the connecting rod bodies 33 are pressed down along with the pressing wheel supports 32, two adjacent pressing wheels 31 can be respectively pressed down on the winding roller m, two sides of the film layer n1 in the winding process are pressed, the film layer n1 is tightly pressed on the pole piece substrate n wound on the winding roller m of the coating machine, the edges of the two sides of the film layer n1 are effectively relieved, and the phenomenon of wrinkling, folding and uneven winding during winding is avoided. Meanwhile, pole pieces with different width sizes can be processed in a corresponding manner by adjusting the relative positions of the plurality of pressing wheel assemblies 3 on the base carrier roller 2 so as to adaptively adjust the distance between two adjacent pressing wheels 31, so that the pole pieces with different width sizes are flattened and processed in a bulging way, a plurality of production lines are not required to be arranged, or a plurality of groups of pressing wheels are arranged on the same tape conveying path to be processed correspondingly, and the whole occupied area of the coating and winding production line is effectively reduced.

Optionally, the connecting rod 33 includes a swing arm 331 and a transition shaft 332, one end of the swing arm 331 is sleeved on the base carrier roller 2, the pinch roller support 32 is fixedly connected to one end of the transition shaft 332, and the other end of the transition shaft 332 is detachably connected with the other end of the swing arm 331. Illustratively, in the embodiment of the present utility model, the connection rod 33 is provided as a combined detachable structure composed of the swing arm 331 and the transition shaft 332. When the pinch roller 31 needs to be maintained and replaced after long-time work or the pinch roller 31 with the same specification or different specifications needs to be replaced, only the transition shaft 332 positioned at the tail end can be detached and separated from the swing arm 331, the whole connecting rod body 33 is prevented from being detached from the base carrier roller 2, the operation is convenient, and the practicability of the pinch roller device is improved.

Optionally, the other end of the swing arm 331 is provided with a plurality of first bolt holes 3311, the plurality of first bolt holes 3311 are uniformly spaced along the length direction of the swing arm 331, the other end of the transition shaft 332 is provided with a plurality of second bolt holes 3321 matched with the first bolt holes 3311, the plurality of second bolt holes 3321 are uniformly spaced along the length direction of the transition shaft 332, and the interval between two adjacent first bolt holes 3311 is equal to the interval between two adjacent second bolt holes 3321. Illustratively, in the embodiment of the present utility model, when the swing arm 331 and the transition shaft 332 are connected, at least two second bolt holes 3321 on the transition shaft 332 and at least two first bolt holes 3311 on the swing arm 331 may be aligned and fixedly connected by bolts, which is simple in structure and convenient to install. Meanwhile, according to different processing requirements, the overlapping length of the transition shaft 332 and the swing arm 331 can be adjusted, and alignment and bolting are performed by utilizing second bolt holes 3321 and first bolt holes 3311 of different groups, so that the length of the connecting rod body 33 is finely adjusted, the pinch roller 31 is ensured to be in contact with the winding roller m of the coating machine, and the practicability of the pinch roller device is further improved.

Optionally, a locking mechanism 3312 for fixedly connecting the rod 33 is provided at the connection of the swing arm 331 and the base roller 2. In the embodiment of the utility model, the locking mechanism 3312 is arranged inside the sleeving part of the swing arm 331 and the base carrier roller 2, and the locking handle 3313 is arranged outside the sleeving part of the swing arm 331 and the base carrier roller 2 in a matched manner, after the position adjustment of the swing arm 331 on the base carrier roller 2 is completed, a worker can drive the locking mechanism 3312 to clamp the base carrier roller 2 by screwing the locking handle 3313, so that the locking of the pinch roller assembly 3 is realized, the swing arm 331 is prevented from sliding relatively in the axial direction of the base carrier roller 2 due to vibration during working, and the assembly stability of the pinch roller device is improved.

Optionally, the pinch roller support 32 includes a wheel seat 321 and a support connecting member 322, the pinch roller 31 is rotatably connected to the wheel seat 321, the support connecting member 322 includes an intermediate plate 3221 and two connecting arms 3222, the intermediate plate 3221 is disposed on a top plane of the transition shaft 332 and is fixedly connected to the transition shaft 332, one ends of the two connecting arms 3222 are vertically connected to two ends of the intermediate plate 3221 and symmetrically arranged relative to the transition shaft 332, and the other ends of the two connecting arms 3222 are connected to the wheel seat 321. In the embodiment of the present utility model, when the pinch roller 31 and the transition shaft 332 are connected, the bracket connecting member 332 in a "U" shape may be inversely fastened to the transition shaft 332, so that the top end surfaces of the middle plate 3221 and the transition shaft 332 are attached to each other and fixedly connected by bolts, and then the bracket connecting member 332 and the wheel seat 321 are fixedly connected, and the pinch roller bracket 32 is formed by combining and connecting modularized components, so that the structure is simple and the installation is convenient.

Optionally, the pinch roller device for improving the flatness of the coated winding pole piece further comprises a pinch roller deflection limiting block 34, wherein the pinch roller deflection limiting block 34 is mounted on the top plane of the transition shaft 332 and is provided with a limiting surface 341 parallel to the base carrier roller 2, a limiting flange 3411 is convexly arranged on the limiting surface 341, the limiting surface 341 is abutted against one side end surface of the middle plate 3221, which is close to the base carrier roller 2, and the limiting flange 3411 is abutted against one side plate surface of the middle plate 3221, which is opposite to the transition shaft 332. Illustratively, in the embodiment of the present utility model, after the connection between the pinch roller support 32 and the transition shaft 332 is completed, by adding the pinch roller deflection limiting block 34 that is laterally and longitudinally abutted against the middle plate 3221 of the pinch roller support 32, the pinch roller support 32 is further limited and fixed on the transition shaft 332 by using the limiting surface 341 and the limiting flange 3411 thereof, so that the pinch roller support 32 is prevented from relatively shaking relative to the transition shaft 332 during the working process, the pinch roller 31 is ensured to be always kept in a state parallel to the winding roller m of the coating machine, and the structural reliability and the assembly stability of the pinch roller device are further improved.

Optionally, the pinch roller device for improving flatness of the coated rolled pole piece further includes a plurality of balancing weights 4, at least one of the plurality of balancing weights 4 is detachably mounted on the swing arm 331, and weights of the plurality of balancing weights 4 are different from each other. For example, in the embodiment of the present utility model, the pressing wheel 31 is pressed onto the coating machine winding roller m only by the dead weight of the connecting rod 33, the pressing wheel bracket 32 and the pressing wheel 31, if the working condition that the speed of the coating machine winding roller m is too high occurs, the phenomenon that the pressing wheel 31 jumps easily occurs, and therefore, the pressing wheel 31 cannot be guaranteed to be always tightly attached to the coating machine winding roller m. Staff can correspond to install the balancing weight 4 of different weights on swing arm 331 according to actual rolling speed in order to increase pinch roller assembly 3's whole weight, guarantees pinch roller 31's steady that pushes down, has further improved pinch roller device's job stabilization nature.

Optionally, the pinch roller device for improving flatness of the coated rolled pole piece further comprises a lifting mechanism 5, wherein the lifting mechanism 5 is connected to the other end of the base carrier roller 2, and the lifting mechanism 5 is configured to drive the base carrier roller 2, the driving device 1 and the plurality of pinch roller assemblies 3 to lift in the vertical direction. Illustratively, in the embodiment of the present utility model, the driving cylinder is used as the lifting mechanism 5, so that the whole lifting and pressing of the driving base carrier roller 2, the driving device 1 and the multiple pressing wheel assemblies 3 can be realized, the multiple pressing wheel assemblies 3 are preferentially adjusted to a position close to the winding roller m of the coating machine, and the correction adjustment time when equipment is installed is saved when the driving device 1 drives the base carrier roller 2 for further fine adjustment. Meanwhile, the adjustment, disassembly and maintenance of the components of the pinch roller device are facilitated for workers, and the practicability of the pinch roller device is further improved.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the utility model, but rather, the utility model is to be construed as limited to the appended claims.

Claims

1. The utility model provides a improve pinch roller device of coating rolling pole piece roughness which characterized in that includes: a driving device (1), a base carrier roller (2) and a plurality of pinch roller components (3),

the base carrier roller (2) is arranged above the winding roller (m) of the coating machine and is parallel to the base carrier roller (2), one end of the base carrier roller (2) is in transmission connection with the driving device (1), and the driving device (1) is configured to drive the base carrier roller (2) to rotate around an axis;

the pinch roller subassembly (3) include pinch roller (31), pinch roller support (32) and connect body of rod (33), pinch roller (31) pass through pinch roller support (32) connect in the one end of connecting body of rod (33), the axis of pinch roller (31) with base bearing roller (2) are parallel, connect the other end of body of rod (33) slidable cup joint in on base bearing roller (2), a plurality of pinch roller subassemblies (3) are followed the length direction interval arrangement of base bearing roller (2).

2. The pinch roller device for improving flatness of a coated winding pole piece according to claim 1, wherein the connecting rod body (33) comprises a swing arm (331) and a transition shaft (332), one end of the swing arm (331) is sleeved on the base carrier roller (2), the pinch roller support (32) is fixedly connected to one end of the transition shaft (332), and the other end of the transition shaft (332) is detachably connected with the other end of the swing arm (331).

3. The pinch roller device for improving flatness of a coated winding pole piece according to claim 2, wherein a plurality of first bolt holes (3311) are formed in the other end of the swing arm (331), the plurality of first bolt holes (3311) are uniformly spaced along the length direction of the swing arm (331), a plurality of second bolt holes (3321) matched with the first bolt holes (3311) are formed in the other end of the transition shaft (332), the plurality of second bolt holes (3321) are uniformly spaced along the length direction of the transition shaft (332), and the distance between two adjacent first bolt holes (3311) is equal to the distance between two adjacent second bolt holes (3321).

4. Pinch roller device for improving flatness of coated rolled pole piece according to claim 2, characterized in that a locking mechanism (3312) for fixing the connecting rod body (33) is arranged at the joint of the swing arm (331) and the base carrier roller (2).

5. The pinch roller device for improving flatness of a coated winding pole piece according to claim 2, wherein the pinch roller support (32) comprises a wheel seat (321) and a support connecting piece (322), the pinch roller (31) is rotatably connected to the wheel seat (321), the support connecting piece (322) comprises a middle plate (3221) and two connecting arms (3222), the middle plate (3221) is arranged on the top plane of the transition shaft (332) and fixedly connected with the transition shaft (332), one ends of the two connecting arms (3222) are vertically connected to two ends of the middle plate (3221) and symmetrically arranged relative to the transition shaft (332), and the other ends of the two connecting arms (3222) are connected with the wheel seat (321).

6. The pinch roller device for improving flatness of a coated winding pole piece according to claim 5, further comprising a lifting mechanism (5) and a pinch roller deflection limiting block (34), wherein the pinch roller deflection limiting block (34) is mounted on a top plane of the transition shaft (332) and is provided with a limiting surface (341) parallel to the base carrier roller (2), a limiting flange (3411) is convexly arranged on the limiting surface (341), the limiting surface (341) is abutted with one side end face of the middle plate (3221) close to the base carrier roller (2), and the limiting flange (3411) is abutted with one side plate face of the middle plate (3221) opposite to the transition shaft (332).

7. The pinch roller device for improving flatness of a coated winding pole piece according to claim 2, further comprising a plurality of balancing weights (4), wherein at least one of the plurality of balancing weights (4) is detachably mounted on the swing arm (331), and weights of the plurality of balancing weights (4) are different from each other.

8. The pinch roller device for improving flatness of a coated winding pole piece according to claim 1, further comprising a lifting mechanism (5), wherein the lifting mechanism (5) is connected to the other end of the base carrier roller (2), and the lifting mechanism (5) is configured to be capable of driving the base carrier roller (2), the driving device (1) and the plurality of pinch roller assemblies (3) to lift in a vertical direction.