CN218903131U

CN218903131U - Lug shaping device after sheet making

Info

Publication number: CN218903131U
Application number: CN202222977557.3U
Authority: CN
Inventors: 周建波; 吴德; 李颖
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-04-25
Anticipated expiration: 2032-11-08

Abstract

The utility model discloses a tab shaping device after sheet making, which comprises a conveying mechanism for conveying pole pieces, an image detection mechanism for acquiring images of the pole pieces and a leveling mechanism for leveling the pole pieces, wherein the conveying mechanism is used for conveying the pole pieces; the leveling mechanism comprises a support plate, a flexible film, a driving roller assembly for supporting the flexible film to move and a first driving mechanism for driving the flexible film to rotate, wherein the driving roller assembly and the first driving mechanism are fixed on the support plate; the flexible film and the conveying mechanism in the lug shaping device move at the same speed, so that the lug can be effectively smoothed, the shooting precision is improved, the lug is effectively prevented from being turned over, the lug detection efficiency is improved, and the lug smoothing effect is good.

Description

Lug shaping device after sheet making

Technical Field

The utility model relates to the technical field of lithium battery preparation, in particular to a tab shaping device after tabletting.

Background

The working procedures of the power lithium battery, such as lamination, are key technical working procedures which can improve the energy density relative to the winding process; the equipment has higher requirements on processing precision in production, so that the relative position detection of the tab is particularly important, and the control of deformation of the tab during processing and detection is particularly important.

At present, after a pole roll is cut off by a lamination machine in all lithium battery production equipment, the relative position of a pole lug is generally required to be detected to ensure the lamination precision, the strength of a current collector is correspondingly lowered along with the thinning of the thickness requirement of the current collector in the industry, the pole lug is easy to deform after passing through a roller, and the position of the pole lug relative to a pole piece cannot be accurately detected by a detection device under the condition that the shaping of the pole lug is not performed.

The lamination machine tab that uses at present rectifies scheme and generally is centre gripping formula or film fixed smooth type, and the former produces great influence to efficiency and makes efficiency improvement difficulty to these two kinds of schemes, and the latter causes the tab to hit quick-witted film edge easily and makes the tab turn over and cause a large amount of bad.

Disclosure of Invention

Based on the technical problems in the background art, the utility model provides a tab shaping device after sheet making, which effectively avoids tab folding and improves tab detection efficiency, and has good tab smoothing effect.

The utility model provides a tab shaping device after sheet making, which comprises a conveying mechanism for conveying pole pieces, an image detection mechanism for acquiring images of the pole pieces and a leveling mechanism for leveling the pole pieces; the leveling mechanism comprises a support plate, a flexible film, a driving roller assembly for supporting the flexible film to move and a first driving mechanism for driving the flexible film to rotate, wherein the driving roller assembly and the first driving mechanism are fixed on the support plate.

Further, the driving roller assembly comprises a roller and a regulating roller, a plurality of roller passing different lines are fixed on the support plate, the two regulating rollers are respectively close to the conveying belt of the conveying mechanism and are movably arranged on the support plate, and the flexible film is respectively attached to each roller passing and each regulating roller.

Further, the first driving mechanism comprises a driving roller and a motor for driving the driving roller to rotate, the motor is fixed on the support plate, and the flexible film is respectively attached to the driving roller, each passing roller and each adjusting roller.

Further, the image detection mechanism comprises a camera and a camera supporting plate for fixing the camera, the camera supporting plate is movably arranged on the supporting plate, and the view field of the camera is arranged facing the conveying mechanism.

Further, the number of the image detection mechanisms is two, and the visual field areas of the two image detection mechanisms on the conveying mechanism are adjacent and do not coincide.

Further, the conveying mechanism comprises a synchronous wheel, a synchronous belt and a synchronous motor for driving the synchronous wheel to rotate, the synchronous belt is sleeved on the two synchronous wheels which are oppositely arranged, the pole piece is paved on the synchronous belt, and the pole lugs of the pole piece move along with the synchronous belt to pass through the field of view area of the camera.

Further, the device also comprises a compressing mechanism for compressing the flexible film, wherein the compressing mechanism is fixed on the support plate, and a gap formed between the compressing mechanism and the driving roller is used for the flexible film to pass through.

Further, the compressing mechanism comprises a linear bearing, a driven roller, an air cylinder and a compressing plate fixed on the supporting plate, wherein the air cylinder is fixed on the compressing plate, two ends of the driven roller are fixedly connected with the two linear bearings respectively, a telescopic end of the air cylinder is fixedly connected with the linear bearings, and the air cylinder drives the linear bearings to move to drive the driven roller to move to the driving roller until the driven roller is abutted to the flexible plate on the driving roller.

The tab shaping device after sheet making provided by the utility model has the advantages that: according to the tab shaping device after film production, which is provided by the structure, the flexible film and the conveying mechanism move at the same speed, so that the tab can be effectively smoothed, and the shooting precision is improved; the distance between the regulating roller and the synchronous belt and the entering angle of the pole piece are regulated by regulating the fixed position of the regulating roller on the support plate, so that the flexible film can be attached to the pole lugs on the synchronous belt to shape the pole lugs; the driving roller is driven to rotate by a motor, the driven roller also rotates along with the driving roller, and the friction force between the two rollers is changed by adjusting the gap between the two rollers, so that the movement speed of the flexible film is limited, and the movement speed of the flexible film is consistent with the synchronous belt.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the image detection mechanism, the leveling mechanism and the compacting mechanism;

the device comprises a 1-pole piece, a 2-conveying mechanism, a 3-image detection mechanism, a 4-leveling mechanism, a 5-compressing mechanism, a 21-synchronizing wheel, a 22-synchronizing belt, a 31-camera, a 32-camera supporting plate, a 41-supporting plate, a 42-flexible film, a 43-driving roller assembly, a 51-linear bearing, a 52-driven roller, a 53-cylinder, a 54-compressing plate, a 431-passing roller, a 432-adjusting roller, a 441-driving roller and a 442-motor.

Detailed Description

In the following detailed description of the present utility model, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.

As shown in fig. 1 and 2, the post-tabletting tab shaping device provided by the utility model comprises a conveying mechanism 2 for conveying a pole piece 1, an image detection mechanism 3 for acquiring images of the pole tab and a leveling mechanism 4 for leveling the pole tab; the leveling mechanism 4 comprises a support plate 41, a flexible film 42, a driving roller assembly 43 for supporting the flexible film 42 to move and a first driving mechanism 44 for driving the flexible film 42 to rotate, wherein the driving roller assembly 43 and the first driving mechanism 44 are fixed on the support plate 41.

Detecting and confirming the machining precision of the cut tab and the edge of the pole piece by using an image detection mechanism 3; in addition, the flexible film 42 is driven to rotate through the first driving mechanism 44, so that the flexible film 42 and the conveying mechanism 2 can move at the same speed, the lug can be effectively smoothed, the shooting precision is improved, and when the lug is flattened, the flexible film 42 and the synchronous belt 22 of the conveying mechanism 2 are prevented from being folded at the same running speed, so that the final detection efficiency is higher; in addition, the flexible film 42 is a transparent flexible film, so that the defect that the field area of view of the camera 31 in the image detection mechanism 3 is blocked when the camera is used for detecting, and thus the lug image cannot be obtained effectively is avoided.

In this embodiment, the image detection mechanism 3 includes a camera 31 and a camera support plate 32 for fixing the camera 31, where the camera support plate 32 is movably disposed on the support plate 41, and the distance between the camera 31 and the tab on the synchronous belt 22 can be adjusted by adjusting the fixing position of the camera support plate 32 on the support plate 41, so as to obtain a clearer tab image; the conveying mechanism 2 comprises a synchronous wheel 21, a synchronous belt 22 and a synchronous motor for driving the synchronous wheel 21 to rotate, the synchronous belt 22 is sleeved on the two synchronous wheels 21 which are oppositely arranged, the pole piece 1 is paved on the synchronous belt 22, and the pole lugs of the pole piece 1 move along with the synchronous belt 22 to pass through the field of view area of the camera 31.

The synchronous belt 22 can be simultaneously detected by arranging a plurality of image detection mechanisms 3, so that the final detection efficiency is improved, two image detection mechanisms 3 are arranged, and the visual field areas of the two image detection mechanisms 3 on the synchronous belt 22 are adjacent and are not overlapped, so that the two lugs can be simultaneously subjected to image acquisition, and the detection efficiency is improved.

In this embodiment, the driving roller assembly 43 includes a passing roller 431 and a regulating roller 432, the plurality of passing rollers 431 are fixed on the support plate 41 in different lines, the two regulating rollers 432 are respectively disposed close to the conveyor belt of the conveying mechanism 2 and are movably disposed on the support plate 41, and the flexible film 42 is respectively attached to each passing roller 431 and each regulating roller 432. The roller 431 is mainly used for assisting the flexible film 42, and the distance between the adjusting roller 432 and the synchronous belt 22 and the entering angle of the pole piece can be adjusted by adjusting the fixing position of the adjusting roller 432 on the support plate 41, so that the flexible film 42 can be attached to the pole lug on the synchronous belt 22 to shape the pole lug, and the camera 31 can acquire images of the leveled pole lug in the process of attaching the pole lug, so that images of the leveled pole lug are acquired.

In the present embodiment, the first driving mechanism 44 includes a driving roller 441 and a motor 442 for driving the driving roller 441 to rotate, the motor 442 is fixed to the support plate 41, and the flexible film 42 is attached to the driving roller 441, each of the passing rollers 431, and each of the regulating rollers 432, respectively. The tab shaping device further comprises a pressing mechanism 5 for pressing the flexible film 42, wherein the pressing mechanism 5 is fixed on the support plate 41, and a gap formed between the pressing mechanism 5 and the driving roller 441 is used for the flexible film 42 to pass through. Specifically, the pressing mechanism 5 includes a linear bearing 51, a driven roller 52, an air cylinder 53, and a pressing plate 54 fixed on the support plate 41, the air cylinder 53 is fixed on the pressing plate 54, two ends of the driven roller 52 are respectively fixedly connected with the two linear bearings 51, a telescopic end of the air cylinder 53 is fixedly connected with the linear bearing 51, and the air cylinder 53 drives the linear bearing 51 to move to drive the driven roller 52 to move towards the driving roller 441 until being abutted against a flexible plate on the driving roller 441.

The linear bearings 51 are matched with the cylindrical shaft, one end of the cylindrical shaft is fixed on the pressing plate 54, the linear bearings 51 are sleeved on the cylindrical shaft, the air cylinders 53 stretch and retract to drive the linear bearings 51 to move up and down along the cylindrical shaft, and further the driven rollers 52 move up and down, for structural stability, the two linear bearings 51 are respectively arranged on two sides of the air cylinders 53, the driven rollers 52 move towards the driving rollers 441, so that the flexible film 42 passes through friction between the two rollers (the driven rollers 52 and the driving rollers 441), the driving rollers 441 are driven to rotate by the motor 442, the driven rollers 52 also rotate along with the friction, friction force between the two rollers is changed by adjusting gaps between the two rollers, and further the moving speed of the flexible film 42 is limited, so that the moving speed of the flexible film 42 is consistent with the synchronous belt 22.

The working process comprises the following steps: after the manufactured sheet is cut, the pole piece enters the synchronous belt 22, meanwhile, the air cylinder 52 is pressed down to drive the two linear bearings 51 to move downwards, the driven roller 52 moves downwards to compress the flexible film 42, the motor 442 acts to drive the flexible film 42, the flexible film 42 and the synchronous belt 22 keep the same speed, the flexible film 42 rotates in a circulating way through the regulating roller 432 and the roller 431, and when the pole piece 1 reaches a proper position, the camera 31 shoots the edge of the pole ear of the pole piece 1 and the edge of the pole piece and feeds back to the controller, and the circulating shooting is continued.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The tab shaping device after the sheet making is characterized by comprising a conveying mechanism (2) for conveying the pole pieces (1), an image detection mechanism (3) for acquiring images of the pole pieces and a leveling mechanism (4) for leveling the pole pieces;

the leveling mechanism (4) comprises a support plate (41), a flexible film (42), a transmission roller assembly (43) for supporting the flexible film (42) to move and a first driving mechanism (44) for driving the flexible film (42) to rotate, wherein the transmission roller assembly (43) and the first driving mechanism (44) are fixed on the support plate (41).

2. The post-tabletting tab shaping device according to claim 1, wherein the driving roller assembly (43) comprises a roller (431) and a regulating roller (432), the roller (431) is fixed on the support plate (41) in different lines, the two regulating rollers (432) are respectively close to a conveying belt of the conveying mechanism (2) and are movably arranged on the support plate (41), and the flexible film (42) is respectively attached to each roller (431) and each regulating roller (432).

3. The post-tabletting tab shaping device according to claim 1, wherein the first driving mechanism (44) comprises a driving roller (441) and a motor (442) for driving the driving roller (441) to rotate, the motor (442) is fixed on the support plate (41), and the flexible film (42) is respectively attached to the driving roller (441), each passing roller (431) and each adjusting roller (432).

4. Post-production tab shaping device according to claim 1, characterized in that the image detection means (3) comprise a camera (31) and a camera support plate (32) for fixing the camera (31), the camera support plate (32) being movably arranged on the support plate (41), the field of view of the camera (31) being arranged facing the conveying means (2).

5. The post-production tab shaping device according to claim 4, wherein the number of the image detection mechanisms (3) is two, and the field areas of view of the two image detection mechanisms (3) on the conveying mechanism (2) are adjacent and do not coincide.

6. The post-tabletting tab shaping device according to claim 4, wherein the conveying mechanism (2) comprises a synchronizing wheel (21), a synchronous belt (22) and a synchronous motor for driving the synchronizing wheel (21) to rotate, the synchronous belt (22) is sleeved on the two oppositely arranged synchronizing wheels (21), the pole piece (1) is paved on the synchronous belt (22), and the tab of the pole piece (1) moves along with the synchronous belt (22) to pass through the field of view area of the camera (31).

7. A post-tabletting tab shaping device according to claim 3, further comprising a hold-down mechanism (5) for holding down the flexible membrane (42), the hold-down mechanism (5) being secured to the support plate (41), a gap being formed between the hold-down mechanism (5) and the drive roller (441) for passage of the flexible membrane (42).

8. The post-tabletting tab shaping device according to claim 7, wherein the compressing mechanism (5) comprises a linear bearing (51), a driven roller (52), an air cylinder (53) and a compressing plate (54) fixed on the supporting plate (41), the air cylinder (53) is fixed on the compressing plate (54), two ends of the driven roller (52) are fixedly connected with the two linear bearings (51) respectively, a telescopic end of the air cylinder (53) is fixedly connected with the linear bearings (51), and the air cylinder (53) drives the linear bearings (51) to move so as to drive the driven roller (52) to move towards the driving roller (441) until the driven roller is abutted with a flexible plate on the driving roller (441).