CN218015203U

CN218015203U - Rolling mechanism

Info

Publication number: CN218015203U
Application number: CN202221329953.9U
Authority: CN
Inventors: 江德顺; 肖礼军; 吴记彪
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-12-13
Anticipated expiration: 2032-05-19

Abstract

The utility model relates to a rolling mechanism, its characterized in that, rolling mechanism includes: a drive roll; the compression roller assembly comprises a working roller, a rolling gap is formed between the working roller and the driving roller, the working roller comprises a roller shaft, a rolling portion and a buffering member, the rolling portion comprises a first non-coating region, a second non-coating region and a third non-coating region, the first non-coating region is convex, the second non-coating region is convex, the third non-coating region is convex, the interval between the second non-coating region and the third non-coating region is arranged on the roller shaft, the buffering member is at least four, the at least four buffering members are respectively sleeved on the first non-coating region, the second non-coating region is convex, and the third non-coating region is convex at least one side. According to the rolling mechanism, the rolling part can correspond to the position of each reserved white area of the pole piece and roll the reserved white area, the thinning area and the ceramic layer area of the pole piece can be covered by the buffer part and rolled, the non-coating area of the pole piece can be rolled by one-time rolling, the working procedures are reduced, and the rolling efficiency is improved.

Description

Rolling mechanism

Technical Field

The utility model relates to a battery pole piece production technical field especially relates to rolling mechanism.

Background

The lithium battery is widely applied, in order to improve the energy density of the battery, the battery pole pieces are usually rolled, the pole pieces of the lithium battery are formed by coating positive and negative electrode slurry on two sides of a foil, certain ductility exists, in order to improve the production efficiency, two or more pole pieces are required to be produced simultaneously by using the same foil, in the preorder coating process, in order to save the using amount of active substances, an area between the pole pieces is usually not coated with the active substances, in the rolling process, a compression roller is pressed on a coating area of the pole piece for rolling extension, the active substances in the coating area can extrude the residual area of a platinum sheet to cause foil extension, in order to make the extension rates of all parts of the foil be consistent, after the coating area of the pole piece is rolled, a plurality of roller pressing mechanisms are also required to roll a non-coating area of the foil for a plurality of times, the processes are multiple, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

Therefore, a rolling mechanism which can roll the non-coating area of the foil simultaneously, has a simple process and is high in efficiency is needed to solve the problem that the rolling device needs to perform multiple rolling operations on the non-coating area of the pole piece.

A roller press mechanism, comprising:

a drive roll;

the compression roller assembly, the compression roller assembly includes the working roller, the working roller with form the roll-in clearance between the drive roll, the working roller includes roller, roll splenium and bolster, the roll-in portion includes that first non-coating district is protruding, second non-coating district is protruding and the third non-coating district is protruding, first non-coating district is protruding the second non-coating district is protruding and the protruding interval of third non-coating district set up in on the roller, the bolster is at least four, at least four the bolster overlaps respectively and locates first non-coating district is protruding the second non-coating district protruding with the bellied at least one side in third non-coating district.

In one embodiment, the first non-coating region protrusion, the second non-coating region protrusion and the third non-coating region protrusion are all ring-shaped protrusions protruding relative to the roller shaft and are uniformly spaced on the roller shaft.

In one embodiment, at least one side of the outer circular surface of the first non-coating region protrusion, the second non-coating region protrusion and the third non-coating region protrusion is provided with a concave ring, and the buffer member is connected with the concave ring.

In one embodiment, the outer circumferential surface diameter of the buffer is smaller than the diameters of the first, second, and third non-coating region protrusions.

In one embodiment, the press roller assembly further comprises a movement driving device, and the movement driving device is connected with the working roller.

In one embodiment, the roller is a one-piece roller.

In one embodiment, the compression roller assembly further comprises two supporting rollers and a connecting frame, the two supporting rollers are arranged between the mobile driving device and the working roller and are connected with the mobile driving device through the connecting frame, the working roller is arranged between the two supporting rollers and the driving roller, and the driving roller is connected with the connecting frame.

In one embodiment, the roller shaft is a split roller shaft, the split roller shaft comprises a first split roller, a second split roller and a third split roller, and the first non-coating region protrusion, the second non-coating region protrusion and the third non-coating region protrusion are respectively arranged on the first split roller, the second split roller and the third split roller.

In one embodiment, the press roller assembly further comprises three support frames, the three support frames and the three moving driving devices are respectively connected with the three support frames, and the three support frames are respectively connected with the first sub roller, the second sub roller and the third sub roller.

In one embodiment, the device further comprises a rotary driving device, and the driving roller is in driving connection with the rotary driving device.

According to the rolling mechanism, a rolling gap is formed between the working roll and the driving roll, the pole pieces can be clamped and rolled, the rolling part of the working roll comprises the first non-coating area bulge, the second non-coating area bulge and the third non-coating area bulge, the first non-coating area bulge, the second non-coating area bulge and the third non-coating area bulge are arranged on the roll shaft at intervals, during rolling, the first non-coating area bulge, the second non-coating area bulge and the third non-coating area bulge can correspond to the positions of the blank areas of the pole pieces and roll the blank areas, at least four buffer parts are respectively sleeved on at least one side of the first non-coating area bulge, the second non-coating area bulge and the third non-coating area bulge, the thin cutting area and the ceramic layer area of the pole pieces can be covered and rolled by the buffer parts, the non-coating areas of the pole pieces can be rolled through one-time of rolling, the rolling process of the pole pieces is improved, the consistency of the extensibility of the non-coating areas of the pole pieces is improved, the rolling process is reduced, the pole piece rolling efficiency is improved, and the number of the rolling mechanism is reduced. The rolling mechanism can roll the non-coating area of the pole piece simultaneously, and is simple in process and high in efficiency.

Drawings

FIG. 1 is a schematic view of a rolling mechanism in one embodiment;

FIG. 2 is a schematic view of a work roll configuration in one embodiment;

FIG. 3 is a schematic diagram of a pole piece structure in an embodiment;

FIG. 4 is another schematic view of a roller press mechanism in one embodiment;

FIG. 5 is another schematic diagram of a work roll in one embodiment.

Description of reference numerals:

1. a compression roller assembly; 2. a drive roll;

s, pole pieces; s1, a blank area is reserved; s2, a coating area; s3, thinning the area; s4, forming a ceramic layer;

11. a movement driving device; 12. a support roller; 13. a work roll; 131. an integral roller shaft; 1311. a first non-cladding region protrusion; 1312. a second non-cladding region protrusion; 1313. a third non-cladding region raised; 132. a buffer member; 14. a support frame; 15. a first sub-roller; 16. a second sub-roller; 17. and a third sub-roller.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to fig. 3, fig. 1 shows a schematic diagram of a rolling mechanism in an embodiment of the present invention, fig. 2 is a schematic diagram of a structure of a working roll 13 in an embodiment, fig. 3 is a schematic diagram of a structure of a pole piece S in an embodiment, an embodiment of the present invention provides a rolling mechanism, including: a drive roll 2; the press roller assembly 1 comprises a working roller 13, a rolling gap is formed between the working roller 13 and the driving roller 2, the working roller 13 comprises a roller shaft, a rolling part and at least four buffering members 132, the rolling part comprises first non-coating region protrusions 1311, second non-coating region protrusions 1312 and third non-coating region protrusions 1313, the first non-coating region protrusions 1311, the second non-coating region protrusions 1312 and the third non-coating region protrusions 1313 are arranged on the roller shaft at intervals, the number of the buffering members 132 is at least four, and the at least four buffering members 132 are respectively sleeved on at least one side of the first non-coating region protrusions 1311, the second non-coating region protrusions 1312 and the third non-coating region protrusions 1313. In the rolling mechanism, a rolling gap is formed between the working roll 13 and the driving roll 2, the rolling portion of the working roll 13 can clamp and roll the pole piece S, the rolling portion of the working roll 13 comprises a first non-coating region protrusion 1311, a second non-coating region protrusion 1312 and a third non-coating region protrusion 1313, the first non-coating region protrusion 1311, the second non-coating region protrusion 1312 and the third non-coating region protrusion 1313 are arranged on the roll shaft at intervals, during rolling, the first non-coating region protrusion 1311, the second non-coating region protrusion 1312 and the third non-coating region protrusion 1313 can correspond to and roll each blank region S1 of the pole piece S, at least four buffer members 132 are respectively sleeved on at least one side of the first non-coating region protrusion 1311, the second non-coating region protrusion 1312 and the third non-coating region protrusion 1313, the skived region S3 and the ceramic roll layer S4 of the pole piece S can be covered and rolled by the buffer members 132, and the rolling mechanism can reduce the number of the non-coating regions S and reduce the rolling efficiency and the rolling mechanism. The rolling mechanism can realize simultaneous rolling of the non-coating area of the pole piece S, and is simple in process and high in efficiency.

As shown in fig. 2, in one embodiment, the first non-coating region protrusion 1311, the second non-coating region protrusion 1312, and the third non-coating region protrusion 1313 are ring-shaped protrusions with respect to the roll shaft, and are disposed on the roll shaft at uniform intervals.

To facilitate mounting of the buffer member 132, optionally, in one of the embodiments, at least one side of the outer circumferential surfaces of the first non-coating region protrusion 1311, the second non-coating region protrusion 1312, and the third non-coating region protrusion 1313 is provided with a concave ring, and the buffer member 132 is connected to the concave ring.

Optionally, in one of the embodiments, the buffer 132 is a rubber sleeve.

Optionally, in one embodiment, the diameter of the outer circular surface of the buffer 132 is smaller than the diameters of the first non-coating region protrusion 1311, the second non-coating region protrusion 1312 and the third non-coating region protrusion 1313, so that the blank region S1 of the pole piece S can be simultaneously rolled by the first non-coating region protrusion 1311, the second non-coating region protrusion 1312 and the third non-coating region protrusion 1313 while the buffer 132 can be pressed against the skived region S3 and the ceramic layer region S4 of the pole piece S to roll the same.

As shown in fig. 1, in one embodiment, the press roller assembly 1 further comprises a movement driving device 11, and the movement driving device 11 is connected with the working roller 13. The movable driving device 11 is controlled to drive the working roll 13 to move, so that the rolling gap between the working roll 13 and the driving roll 2 is adjusted to adapt to the rolling conditions of the pole pieces S of different models.

Alternatively, to simplify the structure and facilitate installation, in one embodiment, the roller is an integrated roller 131, as shown in fig. 2.

In order to improve the stability of the working roll 13 and improve the rolling effect, in one embodiment, the roller assembly 1 further includes two supporting rolls 12 and a connecting frame, the two supporting rolls 12 are disposed between the mobile driving device 11 and the working roll 13, the supporting roll 12 is connected to the mobile driving device 11 through the connecting frame, the working roll 13 is disposed between the two supporting rolls 12 and the driving roll 2, and the driving roll 2 is connected to the connecting frame.

Optionally, in order to improve the versatility and flexibility of the rolling mechanism, in one embodiment, the roller shaft is a split roller shaft, the split roller shaft includes a first split roller 15, a second split roller 16, and a third split roller 17, and a first non-coating region protrusion 1311, a second non-coating region protrusion 1312, and a third non-coating region protrusion 1313 are respectively disposed on the first split roller 15, the second split roller 16, and the third split roller 17. By changing the spacing distance among the first sub-roller 15, the second sub-roller 16 and the third sub-roller 17, the pole piece S with different scales and models can be adapted, and the universality and the flexibility of the rolling mechanism are improved.

In order to stably support the split type roll shaft and improve the rolling effect, in one embodiment, the press roll assembly 1 further includes three support frames 14, the three support frames 14 and the three movement driving devices 11 are respectively connected to the three support frames 14, and the three support frames 14 are respectively connected to the first sub-roll 15, the second sub-roll 16 and the third sub-roll 17. The first sub-roller 15, the second sub-roller 16 and the third sub-roller 17 are respectively supported by the three support frames 14, so that the first sub-roller 15, the second sub-roller 16 and the third sub-roller 17 are stable in stress during rolling, and the rolling quality of the pole piece S is improved.

Optionally, in one of the embodiments, a rotation driving device is further included, and the driving roller 2 is in driving connection with the rotation driving device. During rolling, the driving roller 2 rotates, the working roller 13 presses the pole piece S against the driving roller 2 to rotate passively, and rolling is achieved.

In the rolling mechanism, a rolling gap is formed between the working roll 13 and the drive roll 2, the pole piece S can be clamped and rolled, a rolling portion of the working roll 13 includes first non-coating region protrusions 1311, second non-coating region protrusions 1312 and third non-coating region protrusions 1313, the first non-coating region protrusions 1311, second non-coating region protrusions 1312 and third non-coating region protrusions 1313 are arranged on a roll shaft at intervals, during rolling, the first non-coating region protrusions 1311, second non-coating region protrusions 1312 and third non-coating region protrusions 1313 can correspond to and roll the blank regions S1 of the pole piece S, at least four buffer members 132 are respectively sleeved on at least one side of the first non-coating region protrusions 1311, second non-coating region protrusions 1312 and third non-coating region protrusions 3, the cut layer regions S3 and ceramic layer regions S4 of the pole piece S can be covered by the buffer members 132 and rolled through one rolling, the non-coating regions of the pole piece S can be obtained, the non-coating regions of the pole piece S are improved, the non-coating region elongation of the pole piece S is improved, and the rolling efficiency of the rolling mechanism is reduced. The rolling mechanism can roll the non-coating area of the pole piece S simultaneously, and is simple in process and high in efficiency.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A rolling mechanism, characterized in that the rolling mechanism comprises:

a drive roll;

2. The roller press mechanism of claim 1, wherein the first non-coating zone protrusions, the second non-coating zone protrusions, and the third non-coating zone protrusions are each ring-shaped protruding relative to the roller shaft and are evenly spaced on the roller shaft.

3. The roller pressing mechanism according to claim 2, wherein at least one side of the outer circumferential surfaces of the first non-coating region protrusion, the second non-coating region protrusion, and the third non-coating region protrusion is provided with a concave ring, and the buffer member is connected to the concave ring.

4. The roller pressing mechanism according to claim 2, wherein an outer circumferential surface diameter of the cushion member is smaller than diameters of the first non-coating region protrusion, the second non-coating region protrusion, and the third non-coating region protrusion.

5. The roller press mechanism of claim 1, wherein the roller assembly further comprises a translation drive coupled to the work roll.

6. The roll mechanism of claim 5 wherein the roll shaft is a one-piece roll shaft.

7. The roller pressing mechanism according to claim 6, wherein the roller assembly further comprises two supporting rollers and a connecting frame, the two supporting rollers are arranged between the mobile driving device and the working roller, the supporting rollers are connected with the mobile driving device through the connecting frame, the working roller is arranged between the two supporting rollers and the driving roller, and the driving roller is connected with the connecting frame.

8. The rolling mechanism of claim 5, wherein the roll shaft is a split roll shaft, the split roll shaft comprises a first split roll, a second split roll and a third split roll, and the first non-coating region protrusion, the second non-coating region protrusion and the third non-coating region protrusion are respectively arranged on the first split roll, the second split roll and the third split roll.

9. The rolling mechanism according to claim 8, wherein the press roll assembly further comprises three support frames, the three support frames and the three movement driving devices are respectively connected with the three support frames, and the three support frames are respectively connected with the first sub-roll, the second sub-roll and the third sub-roll.

10. A roller press mechanism according to any one of claims 1 to 9, further comprising a rotary drive means, said drive roller being in driving connection with said rotary drive means.