Lithium ion battery pole piece slitting device

Abstract

The utility model relates to the technical field of battery pole piece processing, and particularly discloses a lithium ion battery pole piece slitting device which comprises a bottom plate, a winding roller installed on two supporting plates, a support, a first telescopic piece and a slitting knife, and further comprises pressing plates, and the pressing plates are installed on the two sides of the slitting knife in an elastic telescopic mode; and the two limiting assemblies are symmetrically and movably installed on the side, away from the slitting knife, of the pressing plate, the positions of the limiting assemblies are adjusted according to the width and thickness of the pole piece, and the pole piece is limited. According to the pole piece slitting device, before the slitting knife makes contact with the pole piece, the pressing plates make contact with the pole piece firstly, when the slitting knife moves downwards, the pressing plates slowly and tightly press the pole piece, in the slitting process, the pole piece is pressed through the two pressing plates, the position of the pole piece is fixed when the pole piece is slit, and therefore the pole piece is effectively prevented from deviating in the slitting process, and the slitting efficiency is improved. And the phenomena of more burrs or pole piece damage and the like at the slitting part of the pole piece are effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the battery pole piece processing technical field especially relates to a lithium ion battery pole piece slitting device. BACKGROUND

[0002] The pole piece slitting machine is a kind of equipment specially used in electronic industry, is generally applied in electronic components, automobile industry, high polymer material, optical instrument and other fields, and is mainly used to cut pole piece into specified size flake to meet the processing requirement of electronic components.

[0003] In the production process of laboratory soft package battery, to meet the battery specification, the whole pole piece needs to be slitting processed after coating, so that the pole piece is accurately cut into small pieces of required size. The traditional slitting equipment generally cuts the pole piece directly by cutter, but the pole piece position cannot be effectively fixed in the cutting process, which leads to the phenomena of pole piece cutting deviation, more burrs or damaged pole piece, and is not conducive to the subsequent production of soft package battery. UTILITY MODEL CONTENTS

[0004] The utility model aims at the deficiency of prior art, provides a kind of lithium ion battery pole piece slitting device to solve the technical problem that the traditional slitting equipment generally cuts the pole piece directly by cutter, but the pole piece position cannot be effectively fixed in the cutting process, which leads to the phenomena of pole piece cutting deviation, more burrs or damaged pole piece, and is not conducive to the subsequent production of soft package battery.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A kind of lithium ion battery pole piece slitting device, including bottom plate, winding roller, support, telescopic piece one and slitting cutter installed on two support plates, the device further includes:

[0007] Pressing plate, both sides of the slitting cutter are elastically telescopic and installed with pressing plate;

[0008] Limiting component, two sets of limiting components are symmetrically movably installed on the side of the pressing plate away from the slitting cutter, the limiting component adjusts position according to the width and thickness of pole piece, and limits pole piece.

[0009] As the preferred technical solution, a plurality of movable rods are arranged on the pressing plate, a plurality of fixed sleeves are arranged on both sides of the slitting cutter, the movable rods movably penetrate the fixed sleeves, elastic members are connected between the pressing plate and the fixed sleeves, and the elastic members are located on the periphery of the movable rods.

[0010] As the preferred technical scheme, the limiting assembly comprises a sliding block, a horizontal sliding slot is formed on the pressing plate, the sliding block is slidingly installed in the sliding slot, and a limiting block is longitudinally slidingly installed on the sliding block.

[0011] As the preferred technical scheme, two flattening rollers are installed between the two supporting plates, the pole piece passes between the two flattening rollers, a sliding rail is arranged on the bottom plate, flattening plate one and flattening plate two are slidingly installed on the sliding rail respectively, the flattening plate one and the flattening plate two are located on the two sides of the slitting knife respectively, and the flattening plate one is between the slitting knife and the winding roller.

[0012] As the preferred technical scheme, the flattening plate two is provided with a sensor close to the side of the slitting knife.

[0013] As the preferred technical scheme, a through slot is formed on the bottom plate, the through slot is coincided with the downward projection of the slitting knife, and a collecting box is movably installed in the through slot.

[0014] As the preferred technical scheme, a protective cover is arranged between the two pressing plates, a through hole is formed on the protective cover for the slitting knife to pass through, and the bottom of the protective cover is hollowed out.

[0015] As the preferred technical scheme, a turnover plate is elastically rotatably installed on the through slot, and the turnover plate is flush with the top of the bottom plate.

[0016] As the preferred technical scheme, a correction plate is movably installed in the protective cover close to the side of the winding roller, a guide block is arranged on the correction plate, the guide block is slidingly installed in the pressing plate, the correction plate is L-shaped, and a second telescopic piece is arranged between the correction plate and the inner wall of the protective cover.

[0017] The utility model discloses the beneficial effect is:

[0018] 1. In the utility model, before the slitting knife contacts the pole piece, the pressing plate contacts the pole piece first, and the pressing plate slowly presses the pole piece while the slitting knife moves down. In the process of slitting, the pole piece is pressed by the two pressing plates, so that the position of the pole piece is fixed during slitting, thereby effectively avoiding the deviation of the pole piece during slitting, and effectively avoiding the phenomenon of burr or damaged pole piece at the slitting position of the pole piece.

[0019] 2. In the utility model, by adjusting the position of the two sliding blocks on the pressing plate, the distance between the two limiting blocks is equal to the width of the pole piece, then the two sliding blocks are fixed, and the longitudinal position of the two limiting blocks is adjusted, so that the two limiting blocks can be moved to the lower part of the top of the pole piece under the driving of the pressing plate, thereby limiting the pole piece by the two limiting blocks on the two sides of the pole piece. This further avoids the deviation of the pole piece during slitting, so that the cut of the pole piece after slitting is smooth, and it is not easy to appear burr or damage.

[0020] 3、The utility model discloses, through two flattening roller, flatten board no. 1 and flatten board no. 2 can be pressed to the pole piece, make pole piece flatten, avoid the uneven surface of pole piece, thereby avoid the burr of pole piece at the cutting when cutting, also avoid the pole piece when moving and the damage of pole piece cutting caused by the deviation of pole piece cutting.

[0021] 4、The utility model discloses, through the cooperation of turnover board and correction board, when pole piece cutting is finished, turnover board will pole piece from the top in the through slot, when control telescopic piece no. 2 elongation, make correction board slowly close to the cutting of pole piece, and slowly flatten the cutting of pole piece, effectively avoid the pole piece when moving subsequently and be stopped by flatten board no. 2, again cooperate flatten board no. 2 and press to the pole piece, guarantee the flatness of the pole piece of cutting, be favorable to the production of subsequent soft package battery. DRAWINGS

[0022] Figure 1 It is whole structure schematic diagram of the utility model;

[0023] Figure 2 It is cutting knife and related component structure schematic diagram;

[0024] Figure 3 It is protective cover internal structure schematic diagram;

[0025] Figure 4 It is Figure 3 It is the enlarged structure schematic diagram in A of the utility model;

[0026] Figure 5 It is Figure 3 It is the enlarged structure schematic diagram in B of the utility model.

[0027] In the drawing:

[0028] 1, bottom plate;2, support plate;3, winding roller;4, flattening roller;5, support;6, telescopic piece no. 1;7, cutting knife;8, pressing plate;81, fixed sleeve;82, movable rod;83, elastic piece;9, through slot;10, collection box;11, slide rail;12, flatten board no. 1;13, flatten board no. 2;14, sensor;15, guide roller;16, conveyer belt;17, scale;18, protective cover;181, through -hole;19, limit assembly;191, sliding block;192, limit block;20, turnover board;21, correction board;211, guide block;22, telescopic piece no. 2. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figures 1-5 As shown, a lithium-ion battery electrode sheet slitting device includes a base plate 1, a winding roller 3 mounted on two support plates 2, a bracket 5, a telescopic member 6 and a slitting knife 7, and the device also includes:

[0031] The pressing plate 8 is elastically and telescopically installed on both sides of the slitting knife 7;

[0032] Limiting components 19: Two groups of limiting components 19 are symmetrically and movably installed on the side of the pressing plate 8 away from the slitting knife 7. The limiting components 19 adjust their positions according to the width and thickness of the electrode to limit the electrode.

[0033] Furthermore, a plurality of movable rods 82 are provided on the pressure plate 8, and a plurality of fixed sleeves 81 are provided on both sides of the slitting knife 7. The movable rods 82 are movable through the fixed sleeves 81. An elastic member 83 is connected between the pressure plate 8 and the fixed sleeve 81, and the elastic member 83 is located on the periphery of the movable rod 82.

[0034] Furthermore, the limiting assembly 19 includes a slider 191 . A horizontal sliding groove is provided on the pressure plate 8 . The slider 191 is slidably installed in the sliding groove. A limiting block 192 is longitudinally slidably installed on the slider 191 .

[0035] In one case of this embodiment, the telescopic member 6 can be a cylinder or other components that can be controlled to extend and retract; the elastic member 83 can be a spring or other components that can be elastically extended and retracted; in addition, two guide rollers 15 are installed on the side of the base plate 1 away from the winding roller 3, and the two guide rollers 15 rotate in opposite directions and are controlled by a motor; a conveyor belt 16 is installed on the other side of the two guide rollers 15 to facilitate the transmission of the slit pole pieces; a motor is installed on the shaft of the winding roller 3, and the winding roller 3 is driven to rotate by the motor.

[0036] In actual application, first, the pole piece is transported by the winding roller 3, so that the pole piece moves on the base plate 1, when the pole piece moves to the appropriate position, that is, the distance between the pole piece and the slitting cutter 7 is just equal to the size of the pole piece to be slitted, first, the rotation of the winding roller 3 is stopped, then the slitting cutter 7 is controlled to move downward by the telescopic part 1 6 to slit the pole piece, before the slitting cutter 7 contacts the pole piece, the pressing plate 8 contacts the pole piece first, while the slitting cutter 7 moves downward, the pressing plate 8 slowly presses the pole piece tightly, at the same time, the movable rod 82 moves upward, and the elastic part 83 is compressed, finally, the slitting cutter 7 contacts the pole piece to slit the pole piece into two segments, after slitting, the slitting cutter 7 is controlled to move upward by the telescopic part 1 6, and the pressing plate 8 also slowly moves upward, cooperating with the rebounding capacity of the elastic part 83, the pressing plate 8 slowly returns to the original position, at this time, the winding roller 3 is started to make the pole piece continue to move, the unslitted pole piece drives the slitted pole piece to continue to move, the slitted pole piece moves to the guide roller 15, through the guidance of the guide roller 15, the pole piece moves onto the conveying belt 16; in the slitting process, the pole piece is pressed by the two pressing plates 8, so that the position of the pole piece is fixed during slitting, thereby effectively avoiding the pole piece from deviating during slitting, and effectively avoiding the phenomena that burrs are generated at the slitting position of the pole piece or the pole piece is damaged.

[0037] In the process of slitting the pole piece in a straight line, the positions of the two sliding blocks 191 on the pressing plate 8 are adjusted, so that the distance between the two limiting blocks 192 is equal to the width of the pole piece, then the two sliding blocks 191 are fixed, and the longitudinal positions of the two limiting blocks 192 are adjusted, so that the two limiting blocks 192 can move below the top of the pole piece under the driving of the pressing plate 8, thereby the two limiting blocks 192 are respectively abutted against the two sides of the pole piece to limit the pole piece, so that the pole piece is further prevented from deviating during slitting, and the slitted pole piece has a smooth cut and is not easy to generate burrs or be damaged.

[0038] As shown in Figure 1 two pressing rollers 4 are installed between the two supporting plates 2, the pole piece passes between the two pressing rollers 4, the base plate 1 is provided with a sliding rail 1 1, the pressing plate 1 and the pressing plate 2 are respectively slidably installed on the sliding rail 1 1, the pressing plate 1 and the pressing plate 2 are respectively located on the two sides of the slitting cutter 7, and the pressing plate 1 is between the slitting cutter 7 and the winding roller 3.

[0039] Further, the pressing plate 2 is provided with a sensor 14 close to the side of the slitting cutter 7.

[0040] Further, the base plate 1 is provided with a scale 1 7, the scale 1 7 is divided into two sections, and the two sections of the scale 1 7 correspond to the pressing plate 1 and the pressing plate 2 respectively.

[0041] In actual application, the two flattening rollers 4 can preliminarily flatten the pole piece to avoid uneven surface of the pole piece, thereby avoiding burrs at the cutting part of the pole piece during slitting, and the two flattening rollers 4 drive the pole piece to move in cooperation with the winding roller 3; the flattening plate one 12 further flattens the pole piece to flatten the pole piece and also avoid deviation of the pole piece during movement; and the flattening plate two 13 flattens the slitted pole piece, since the cutting part of the pole piece may be bent during slitting of the pole piece, the flattening plate two 13 flattens the cutting part of the pole piece at this time, thereby ensuring flatness of the slitted pole piece and being beneficial to subsequent production of the soft package battery.

[0042] Before slitting of the pole piece, the positions of the flattening plate one 12 and the flattening plate two 13 are adjusted on the slide rail 11 according to the size to be cut of the pole piece, and the adjusted positions are more accurate by adjusting according to the scale 17, the distance between the flattening plate two 13 and the slitting cutter 7 is equal to the length to be slitted of the pole piece after the positions are adjusted, thereby achieving the purpose of quantitative slitting and improving uniformity of the size of the pole piece after slitting; in addition, the sensor 14 is a light beam sensor, the sensor 14 is connected with an external control unit, the external control unit can be a computer terminal, the external control unit is also connected with the winding roller 3, the flattening roller 4 and the telescopic part one 6 respectively, when the pole piece moves to the flattening plate two 13, the pole piece blocks the light beam emitted by the sensor 14, the sensor 14 transmits a signal to the external control unit, the external control unit controls the winding roller 3 and the flattening roller 4 to stop, and controls the telescopic part one 6 to extend at the same time, thereby performing quantitative slitting on the pole piece.

[0043] As shown in Figures 1-5 The bottom plate 1 is provided with a through slot 9, the through slot 9 coincides with the downward projection of the slitting cutter 7, and the through slot 9 movably installs a collecting box 10.

[0044] In actual application, when the slitting cutter 7 cuts the pole piece, the slitting cutter 7 moves downward to contact and cut the pole piece, the slitting cutter 7 continues to move downward into the through slot 9, the debris generated in the slitting process falls into the collecting box 10 through the through slot 9, and the collecting box 10 is installed in the through slot 9 in a pulling manner, and the debris is conveniently disposed after the collecting box 10 is taken out.

[0045] Further, a protective cover 18 is arranged between the two pressing plates 8, the protective cover 18 is provided with a through hole 181 for the slitting cutter 7 to pass through, and the bottom of the protective cover 18 is hollow.

[0046] In actual application, debris may be generated when the slitting cutter 7 cuts the pole piece, and the debris may splash, the slitting space is covered by the protective cover 18, the debris is effectively prevented from splashing and hurting people, and the debris is also conveniently entered into the through slot 9.

[0047] Further, the through slot 9 is elastically rotatably provided with a turnover plate 20, and the turnover plate 20 is flush with the top of the bottom plate 1.

[0048] The turnover plate 20 is provided with a torsion spring, and the torsion spring makes the turnover plate 20 always have a tendency to turn upward.

[0049] It should be noted that, since the slitting cutter 7 will enter the through slot 9 when slitting the pole piece, the cut of the pole piece will be bent into the through slot 9, and if the pole piece continues to move after being slitted, the cut of the pole piece will be stopped by the through slot 9, thereby causing the pole piece to be stuck.

[0050] In actual application, when the slitting cutter 7 moves downward to slit the pole piece, the turnover plate 20 turns downward, and when the slitting cutter 7 moves upward after slitting, the turnover plate 20 turns upward due to the rebounding capacity of the torsion spring, so that the pole piece in the through slot 9 is pushed upward by the turnover plate 20 to be flush with the bottom plate 1, thereby effectively avoiding the pole piece from being stuck in the through slot 9.

[0051] Further, the protection cover 18 is movably provided with a correction plate 21 near the winding roller 3, the correction plate 21 is provided with a guide block 211, the guide block 211 is slidably arranged in the pressing plate 8, the correction plate 21 is L-shaped, and the correction plate 21 is movably provided with a second telescopic member 22 between the inner wall of the protection cover 18.

[0052] In one case of the embodiment, the second telescopic member 22 can be a pneumatic cylinder, or other components capable of controlling the extension and contraction.

[0053] In actual application, when the pole piece is pushed out of the through slot 9 by the turnover plate 20 after being slitted, the cut of the pole piece is still in a bent state, and if the pole piece continues to move, the pole piece will be difficult to pass through the second flattening plate 13 and will be blocked by the second flattening plate 13, at this time, the second telescopic member 22 is controlled to be extended, so that the correction plate 21 slowly approaches the cut of the pole piece and slowly flattens the cut of the pole piece, thereby effectively avoiding the pole piece from being blocked by the second flattening plate 13 in subsequent movement.

[0054] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model.

Claims

1. A lithium-ion battery electrode slitting device, comprising a base plate (1), a winding roller (3) mounted on two support plates (2), a bracket (5), a telescopic member (6) and a slitting knife (7), characterized in that: The device further comprises: A pressure plate (8), with pressure plates (8) being elastically and telescopically mounted on both sides of the slitting knife (7); A limiting assembly (19) is provided, wherein two sets of limiting assemblies (19) are symmetrically and movably installed on one side of the pressing plate (8) away from the slitting knife (7). The limiting assemblies (19) adjust their positions according to the width and thickness of the electrode to limit the electrode.

2. The lithium-ion battery pole piece cutting device according to claim 1, characterized in that: A plurality of movable rods (82) are provided on the pressure plate (8), and a plurality of fixed sleeves (81) are provided on both sides of the slitting knife (7). The movable rods (82) movably penetrate the fixed sleeves (81), and an elastic member (83) is connected between the pressure plate (8) and the fixed sleeves (81). The elastic member (83) is located outside the movable rods (82).

3. The lithium-ion battery pole piece cutting device according to claim 1, characterized in that: The limiting assembly (19) includes a slider (191), a horizontal slide groove is provided on the pressure plate (8), the slider (191) is slidably installed in the slide groove, and a limiting block (192) is longitudinally slidably installed on the slider (191).

4. The lithium-ion battery pole piece cutting device according to claim 1, characterized in that: Two flattening rollers (4) are installed between the two support plates (2), and the pole piece passes through between the two flattening rollers (4). A slide rail (11) is provided on the bottom plate (1), and a flattening plate 1 (12) and a flattening plate 2 (13) are slidably installed on the slide rail (11). The flattening plate 1 (12) and the flattening plate 2 (13) are respectively located on both sides of the slitting knife (7), and between the flattening plate 1 (12), the slitting knife (7) and the winding roller (3).

5. The lithium-ion battery pole piece cutting device according to claim 4, characterized in that: A sensor (14) is installed on the side of the second pressing plate (13) close to the slitting knife (7).

6. The lithium-ion battery pole piece cutting device according to claim 1, characterized in that: A through slot (9) is provided on the bottom plate (1), the through slot (9) coincides with the downward projection of the slitting knife (7), and a collecting box (10) is movably installed in the through slot (9).

7. The lithium-ion battery pole piece cutting device according to claim 6, characterized in that: A protective cover (18) is provided between the two pressing plates (8). A through hole (181) is provided on the protective cover (18) for the slitting knife (7) to pass through. The bottom of the protective cover (18) is hollowed out.

8. The lithium-ion battery pole piece cutting device according to claim 7, characterized in that: A flip plate (20) is elastically rotatably mounted on the through slot (9), and the flip plate (20) is flush with the top of the bottom plate (1).

9. The lithium-ion battery pole piece cutting device according to claim 8, characterized in that: A correction plate (21) is movably installed on one side of the protective cover (18) near the winding roller (3), and a guide block (211) is provided on the correction plate (21). The guide block (211) is slidably installed in the pressure plate (8). The correction plate (21) is L-shaped, and a telescopic part (22) is installed between the correction plate (21) and the inner wall of the protective cover (18).

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