Cylindrical secondary lithium battery pole piece cutting device

Abstract

The utility model relates to the technical field of lithium battery production, in particular to a cylindrical secondary lithium battery pole piece cutting device which comprises a base, a cylinder, a conveying roller and the like. The base is rotationally connected with a cylinder; a conveying roller is rotationally connected to the base and located on the left side of the cylinder. According to the pole piece cutting device, in the rotating process of the cutter, fixed-length cutting is carried out on the pole piece, meanwhile, the effect of continuously and uninterruptedly cutting the pole piece is achieved, the cutting efficiency of the pole piece is improved, in addition, by means of the continuously-rotating cylinder, residue dust falling on the outer ring face of the cylinder is driven to rotate clockwise, the residue dust falls into the collecting box below, and therefore the cutting efficiency of the pole piece is improved. The outer ring surface of the cylinder can be brushed away through bristles of the two brushes, and residues and dust attached to the cylinder are also brushed off together, so that the situation that the quality of the pole pieces is affected due to the fact that the residues and dust attached to the outer ring surface of the cylinder are attached to the subsequent pole pieces is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lithium battery production, specifically, relate to cylindrical secondary lithium battery pole piece cutting device. BACKGROUND

[0002] Lithium battery is a kind of battery using lithium metal or lithium alloy as negative material and using non-aqueous electrolyte solution, in the manufacturing process of lithium battery, one of its core components pole piece needs to go through a series of fine processing steps, including coating and roll pressing, after completing coating and roll pressing procedure, pole piece still needs to carry out cutting process.Cutting process aims at cutting large piece of pole piece accurately into the size and shape required for subsequent assembly;

[0003] In the prior art, the pole piece is cut off during conveying, and only periodic stop and start can be realized, so the working efficiency is low, in addition, the residual dust scattered on the cutting surface cannot be collected immediately, so part of the residual dust stays on the conveying mechanism and is easily attached to the subsequent pole piece to be cut, thereby reducing the quality of the pole piece. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the shortcoming that the pole piece is cut off during conveying, and only periodic stop and start can be realized, so the working efficiency is low, and provides a cutting device, which can continuously and uninterruptedly cut the pole piece to a fixed length, and can timely remove the residual dust generated during cutting, thereby improving the cutting efficiency of the pole piece, and avoiding that the pole piece is attached with residual dust after cutting, so as to affect the quality of the pole piece.

[0005] Another object of the utility model is to provide a cylindrical secondary lithium battery pole piece cutting device with the above functions.

[0006] The embodiment of the utility model realizes through the following technical scheme: cylindrical secondary lithium battery pole piece cutting device, including base, cylinder and conveying roller, the base is rotatably connected with cylinder, the base is rotatably connected with conveying roller, and the conveying roller is located left of the cylinder, still including power component, installation strip, electric push rod one, fixed strip, cutting knife, compression assembly and conveyer belt, the base is connected with power component, power component is connected with cylinder, the inner ring surface of cylinder is provided with a plurality of annular array distribution's installation groove, every installation groove is provided with a cutting slot, the cylinder is detachably connected with a plurality of installation strips, and all installation strips are in an installation groove, and the annular array distribution is shown, every installation strip is provided with a through groove, and the through groove corresponds with the cutting slot, every installation strip is fixedly connected with two electric push rods one, the two electric push rods one telescopic portion of same installation strip is commonly fixedly connected with a fixed strip, every fixed strip is detachably connected with a cutting knife, and the cutting knife corresponds with the through groove of installation strip, the base is connected with compression assembly, the compression assembly is connected with conveyer belt, the outer ring surface of conveyer belt is provided with a plurality of equidistance distribution's strip slot, and the distance between two adjacent strip slots is equal to the outer diameter of two adjacent cutting slots, and the compression assembly is used for tensioning the conveyer belt, every cutting slot of cylinder is provided with a pin before and after, every strip slot of conveyer belt is provided with a pin hole before and after, and the pin hole is matched with the pin, and power component is used for driving cylinder and conveying roller to rotate.

[0007] As the improvement of the above scheme, the power component includes a mounting bracket, a servo motor one, a spur gear, a gear ring, and a servo motor two; the rear side of the base is fixedly connected with the mounting bracket; the mounting bracket is fixedly connected with the servo motor one; the output shaft of the servo motor one is fixedly connected with the spur gear; the rear part of the cylinder is fixedly connected with the gear ring; the gear ring is located behind the base, and the gear ring is engaged with the spur gear; the rear side of the base is fixedly connected with the servo motor two, and the output shaft of the servo motor two is fixedly connected with the conveying roller.

[0008] As the improvement of the above scheme, the compression assembly includes an electric push rod two, a support plate, a limiting rod, a fixed block, and a spring; the rear side of the base is fixedly connected with two electric push rod two, and the gear ring is located between the two electric push rod two; the telescopic part of the two electric push rod two is commonly fixedly connected with the support plate; the left part and the right part of the support plate are each provided with a sliding groove; each sliding groove is slidably provided with a limiting rod; the upper part of the support plate is fixedly connected with another limiting rod; all the limiting rods are commonly sleeved with the conveyer belt, and the conveyer belt is in a triangular shape; the rear side of the support plate is fixedly connected with the fixed block; the fixed block is fixedly connected with a spring on both sides, and the two springs are fixedly connected with the limiting rods in the sliding grooves.

[0009] As the improvement of the above scheme, the conveyor is installed on the right part of the base; the left part of the conveyor is fixedly connected with a guide plate, the left end of the guide plate is close to the outer ring surface of the cylinder; the front part and the rear part of the conveyor are fixedly connected with a baffle respectively; the collecting box is fixedly connected on the base and is located below the cylinder; two brushes which are symmetrically distributed are fixedly connected in the collecting box, and the bristles of the two brushes are attached to the outer ring surface of the cylinder.

[0010] As the improvement of the above scheme, the front side of the cylinder is detachably connected with a protective net.

[0011] As the improvement of the above scheme, a metal sleeve is arranged in each pin hole.

[0012] As the improvement of the above scheme, a metal steel wire is arranged inside the conveying belt.

[0013] Beneficial effects:

[0014] The cylindrical secondary lithium battery pole piece cutting device is obtained through the above design, the lower surface of the conveying belt gradually adapts to the shape of the outer ring surface of the cylinder, changes from a horizontal shape to an arc shape, the pole piece is pressed between the outer surface of the conveying belt and the outer ring surface of the cylinder, and then the cutting knife cuts the pole piece to a fixed length during rotation, so that the pole piece is continuously and uninterruptedly cut, and the cutting efficiency of the pole piece is improved.

[0015] The cylindrical secondary lithium battery pole piece cutting device is obtained through the above design, the cylinder is continuously rotated, the residual dust falling on the outer ring surface of the cylinder is rotated clockwise, and then falls into the collecting box below, the bristles of the two brushes brush off the outer ring surface of the cylinder, the residual dust attached to the cylinder is also brushed off, the residual dust attached to the outer ring surface of the cylinder is prevented from being attached to the subsequent pole piece, and the quality of the pole piece is affected.

[0016] The cylindrical secondary lithium battery pole piece cutting device is obtained through the above design, the inner ring surface of the cylinder is provided with eight mounting grooves, the positions of the mounting strip, the electric push rod one, the fixed strip and the cutting knife mounted on the inner ring surface of the cylinder can be adjusted according to the length of the pole piece to be cut, so that the pole piece of different lengths can be cut. ACCURATE DRAWINGS

[0017] The drawings which form a part of this application are used to provide a further understanding of the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application, and do not constitute an improper limitation on the present application.

[0018] Figure 1 It is a perspective structural schematic view of the cylindrical secondary lithium battery pole piece cutting device.

[0019] Figure 2 This is a three-dimensional structural diagram of the cylindrical secondary lithium battery electrode cutting device of this utility model, including the cylinder, mounting strip, electric push rod 1, fixing strip, and cutter.

[0020] Figure 3 This is a three-dimensional structural diagram of the base, cylinder, power component, pressing component, and conveyor belt of the cylindrical secondary lithium battery electrode cutting device of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the base, cylinder, conveyor, guide plate, baffle, collection box and brush of the cylindrical secondary lithium battery electrode cutting device of this utility model;

[0022] Figure 5 This is a diagram showing the conveying state of the electrode sheets in the cylindrical secondary lithium battery electrode sheet cutting device of this utility model.

[0023] Labels in the diagram: 1-Base, 2-Cylinder, 3-Conveyor Roller, 4-Mounting Strip, 5-Electric Push Rod 1, 6-Fixing Strip, 7-Cutter, 8-Conveyor Belt, 9-Electric Plate

[0024] 101-Mounting bracket, 102-Servo motor one, 103-Spur gear, 104-Gear ring, 105-Servo motor two,

[0025] 201-Electric push rod II, 202-Support plate, 203-Limit rod, 204-Fixing block, 205-Spring,

[0026] 301-Conveyor, 302-Guide plate, 303-Stop bar, 304-Collection box, 305-Brush,

[0027] 2001-Installation groove, 2002-Cutting groove, 2003-Pin post, 2004-Protective net, 4001-Through groove, 8001-Strip groove, 8002-Pin hole, 20201-Slide groove. Detailed Implementation

[0028] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0029] Example 1

[0030] Cylindrical secondary lithium battery electrode cutting device, such as Figures 1-5 As shown, it includes a base 1, a cylinder 2 and a conveying roller 3; the cylinder 2 is rotatably connected to the base 1; the conveying roller 3 is rotatably connected to the base 1 and is located to the left of the cylinder 2;

[0031] The power assembly is connected to the base 1, the power assembly is connected to the cylinder 2, eight annularly arranged mounting grooves 2001 are formed in the inner ring surface of the cylinder 2, one cutting groove 2002 is formed in each mounting groove 2001, four mounting strips 4 are detachably connected to the cylinder 2, all the mounting strips 4 are arranged in one mounting groove 2001, and each mounting strip 4 is provided with one through groove 4001 corresponding to the cutting groove 2002, two electric push rods 5 are bolted to each mounting strip 4, the telescopic parts of the two electric push rods 5 of the same mounting strip 4 are fixedly connected to one fixing strip 6, one cutter 7 is detachably connected to each fixing strip 6, the cutter 7 corresponds to the through groove 4001 of the mounting strip 4, the base 1 is connected to a pressing assembly, the pressing assembly is connected to a conveying belt 8, a plurality of equidistantly distributed strip grooves 8001 are formed in the outer ring surface of the conveying belt 8, the distance between two adjacent strip grooves 8001 is equal to the outer diameter of two adjacent cutting grooves 2002, the pressing assembly is used for tensioning the conveying belt 8, a pin 2003 is arranged at the front and rear of each cutting groove 2002 of the cylinder 2, a pin hole 8002 is formed in the front and rear of each strip groove 8001 of the conveying belt 8, and the pin hole 8002 is matched with the pin 2003, and the power assembly is used for driving the cylinder 2 and the conveying roller 3 to rotate.

[0032] The power assembly comprises a mounting bracket 101, a servo motor 102, a spur gear 103, a gear ring 104 and a servo motor 105, the rear side of the base 1 is fixedly connected with the mounting bracket 101, the servo motor 102 is bolted to the mounting bracket 101, the output shaft of the servo motor 102 is fixedly connected with the spur gear 103, the rear of the cylinder 2 is fixedly connected with the gear ring 104, the gear ring 104 is located behind the base 1 and is engaged with the spur gear 103, the rear side of the base 1 is bolted with the servo motor 105, and the output shaft of the servo motor 105 is fixedly connected with the conveying roller 3.

[0033] The pressing assembly comprises two electric push rods 201, a support plate 202, limiting rods 203, a fixing block 204 and springs 205; the rear side of the base 1 is fixedly connected with the two electric push rods 201, and the tooth ring 104 is located between the two electric push rods 201; the telescopic parts of the two electric push rods 201 are fixedly connected with the support plate 202; the left part and the right part of the support plate 202 are each provided with a sliding groove 20201; each sliding groove 20201 is slidably provided with a limiting rod 203; the upper part of the support plate 202 is fixedly connected with another limiting rod 203; all the limiting rods 203 are jointly sleeved with the conveying belt 8, and the conveying belt 8 is triangular; the rear side of the support plate 202 is fixedly connected with the fixing block 204; the fixing block 204 is fixedly connected with a spring 205 on each side, and the two springs 205 are fixedly connected with the limiting rods 203 in the sliding grooves 20201.

[0034] The conveying machine 301 is also installed on the right part of the base 1; the left part of the conveying machine 301 is fixedly connected with a guide plate 302, and the left end of the guide plate 302 is close to the outer ring surface of the cylinder 2; one blocking strip 303 is fixedly connected with the front part and the rear part of the conveying machine 301; the collecting box 304 is fixedly connected on the base 1, and the collecting box 304 is located below the cylinder 2; two hairbrushes 305 that are symmetrically distributed left and right are fixedly connected in the collecting box 304, and the bristles of the two hairbrushes 305 are attached to the outer ring surface of the cylinder 2.

[0035] Furthermore, to prevent the artificial from being scratched by the continuously rotating part in the cylinder 2, the front side of the cylinder 2 is detachably connected with a protective net 2004.

[0036] Furthermore, to improve the wear resistance of the pin hole 8002, a metal sleeve is arranged in each pin hole 8002.

[0037] Furthermore, to increase the strength of the conveying belt 8, a metal steel wire is arranged in the conveying belt 8.

[0038] The working steps of the embodiment are as follows:

[0039] The following directions are based on the view angle of the drawing, and the direction in which the conveying roller 3 is marked is the left direction;

[0040] The following rotation directions are all from front to back, from top to bottom and from right to left;

[0041] In use, first put the cylindrical secondary lithium battery pole piece 9 cutting device in the desired position, the left of the base 1 is provided with a lithium battery pole piece 9 spreading mechanism, the power supply is connected to all the components that need power to drive, the operator pulls out the first end of the lithium battery pole piece 9 on the spreading mechanism, in turn through the outer surface of the cylinder 2 and the conveying roller 3, moves to the right of the cylinder 2, and then controls the contraction of the extension of the two electric push rod two 201, drives the supporting plate 202, the limiting rod 203, the fixed block 204, the spring 205 and the conveying belt 8 to move downward together, the outer surface of the conveying belt 8 moves downward, the strip-shaped groove 8001 in the middle of the lower surface of the conveying belt 8 is opposite to the uppermost cutting groove 2002 of the outer ring surface of the cylinder 2, and the pin columns 2003 on the front and rear sides of the cutting groove 2002 are also inserted into the corresponding two pin holes 8002, so that the lower surface of the conveying belt 8 gradually adapts to the shape of the outer ring surface of the cylinder 2, changing from horizontal to arc shape, at the same time, forcing the two limiting rods 203 to move to the opposite sides in the corresponding sliding grooves 20201, the two springs 205 are compressed, until the two limiting rods 203 slide to the innermost side of the corresponding sliding grooves 20201, and the lower surface of the conveying belt 8 is fully attached to the outer ring surface of the cylinder 2, at this time, the conveying belt 8 is in a taut state, and the pulled-out pole piece 9 is located between the outer surface of the conveying belt 8 and the outer ring surface of the cylinder 2, and is pressed tightly by the conveying belt 8, as shown in the figure;

[0042] Then control the extension of the two electric push rod one 5 in the uppermost cylinder 2 to push out, drive the fixed strip 6 and the cutter 7 to move upward, let the cutter 7 move through the through groove 4001 and the cutting groove 2002 to the strip-shaped groove 8001 of the conveying belt 8, cut the pole piece 9 between the outer surface of the conveying belt 8 and the outer ring surface of the cylinder 2, after the pole piece 9 is cut, control the contraction of the extension of the two electric push rod one 5, drive the connected parts to reset, at this time, control the synchronous opening of the servo motor one 102, the servo motor two 105 and the external spreading mechanism, the external spreading mechanism spreads the pole piece 9 wound together, the output shaft of the servo motor one 102 drives the straight gear 103 to rotate counterclockwise together, and the straight gear 103 drives the gear ring 104 and the cylinder 2 to rotate clockwise together, at the same time, the output shaft of the servo motor two 105 drives the conveying roller 3 to rotate counterclockwise, through the clockwise rotation of the cylinder 2 and the counterclockwise rotation of the conveying roller 3, and when the cylinder 2 rotates, it also moves the conveying belt 8 on the three limiting rods 203 together to the right, continuously conveying the pole piece 9 to the right;

[0043] The length of the pole piece 9 transported from zero is calculated with the left cut pole piece 9 head as the reference, and the continuously right transported pole piece 9 will pass between the cylinder 2 and the conveying belt 8, and then come to the right part of the cylinder 2 and fall on the guide plate 302, the head of the pole piece 9 is guided by the guide plate 302 and transported to the conveyor 301 along the guide plate 302, at this time, the conveyor 301 is controlled to be opened, and the pole piece 9 is continuously transported, and after the pole piece 9 passes through the length of the outer ring surface of the cylinder 2, the extension part of the two electric push rods one 5 rotating on the upper part of the cylinder 2 is retracted, the connected parts are moved upward, so that the cutter 7 can cut the pole piece 9 of the length standard in the continuous rotation process, and the cut pole piece 9 will also continue to be transported right along the outer ring surface of the cylinder 2 under the interaction of the cylinder 2 and the conveying belt 8, so that the cutter 7 can cut the pole piece 9 to a fixed length in the rotation process, and the effect of continuously cutting the pole piece 9 is realized, and the cutting efficiency of the pole piece 9 is improved.

[0044] After the existing device cuts the pole piece 9, the scattered residues and dust on the cutting surface cannot be collected immediately, so that part of the residues and dust stays on the conveyor 301, which is easy to adhere to the subsequent pole piece 9 to be cut, thereby reducing the quality of the pole piece 9, therefore, the cutter 7 is moved from bottom to top to cut the pole piece 9, so that the residues and dust generated by cutting the pole piece 9 will fall on the outer ring surface of the cylinder 2, and the cylinder 2 is in the process of continuous rotation, which will take the residues and dust falling on the outer ring surface of the cylinder 2 clockwise, so as to fall into the collection box 304 below, at the same time, the bristles of the two brushes 305 will brush the outer ring surface of the cylinder 2 in the process of continuous rotation, so as to brush off the residues and dust attached to the cylinder 2, avoiding that the residues and dust attached to the outer ring surface of the cylinder 2 adhere to the subsequent pole piece 9, thereby affecting the quality of the pole piece 9.

[0045] It should be noted that the inner ring surface of the cylinder 2 is provided with eight installation grooves 2001, and the positions of the installation strip 4, the electric push rod one 5, the fixed strip 6 and the cutter 7 installed on the inner ring surface of the cylinder 2 can be adjusted according to the length of the pole piece 9 to be cut, so that the pole piece 9 of different lengths can be cut.

[0046] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.

Claims

1. A cylindrical secondary lithium battery pole piece cutting device, comprising a base (1); a cylinder (2) is rotatably connected to the base (1); a conveying roller (3) is rotatably connected to the base (1), and the conveying roller (3) is located to the left of the cylinder (2); characterized in that, The power assembly is connected to the base (1); the power assembly is connected to the cylinder (2); a plurality of annularly arranged mounting grooves (2001) are formed in the inner annular surface of the cylinder (2); a cutting groove (2002) is formed in each mounting groove (2001); a plurality of mounting strips (4) are detachably connected to the cylinder (2), and all the mounting strips (4) are arranged in one mounting groove (2001) in an annular array; a through groove (4001) is formed in each mounting strip (4), and the through groove (4001) corresponds to the cutting groove (2002); two electric push rods (5) are fixedly connected to each mounting strip (4); the extension parts of the two electric push rods (5) of the same mounting strip (4) are jointly fixedly connected with a fixing strip (6); a cutter (7) is detachably connected to each fixing strip (6), and the cutter (7) corresponds to the through groove (4001) of the mounting strip (4); a pressing assembly is connected to the base (1); a conveying belt (8) is connected to the pressing assembly; a plurality of equidistantly distributed strip grooves (8001) are formed in the outer annular surface of the conveying belt (8), and the distance between the adjacent two strip grooves (8001) is equal to the outer diameter of the adjacent two cutting grooves (2002); the pressing assembly is used for tensioning the conveying belt (8); a pin column (2003) is arranged at the front part and the rear part of each cutting groove (2002) of the cylinder (2); a pin hole (8002) is formed at the front part and the rear part of each strip groove (8001) of the conveying belt (8), and the pin hole (8002) is matched with the pin column (2003); the power assembly is used for driving the cylinder (2) and the conveying roller (3) to rotate.

2. The cylindrical secondary lithium battery pole piece cutting device according to claim 1, characterized in that, The power assembly comprises a mounting bracket (101), a servo motor (102), a straight gear (103), a gear ring (104) and a servo motor (105); the rear side of the base (1) is fixedly connected with the mounting bracket (101); the mounting bracket (101) is fixedly connected with the servo motor (102); the output shaft of the servo motor (102) is fixedly connected with the straight gear (103); the rear part of the cylinder (2) is fixedly connected with the gear ring (104); the gear ring (104) is located behind the base (1), and the gear ring (104) is engaged with the straight gear (103); the rear side of the base (1) is fixedly connected with the servo motor (105), and the output shaft of the servo motor (105) is fixedly connected with the conveying roller (3).

3. The cylindrical secondary lithium battery pole piece cutting device according to claim 2, characterized in that, The pressing assembly comprises two electric push rods 201, a support plate 202, limiting rods 203, fixing blocks 204 and springs 205; the rear side of the base 1 is fixedly connected with two electric push rods 201, and the tooth ring 104 is located between the two electric push rods 201; the telescopic parts of the two electric push rods 201 are fixedly connected with the support plate 202; the left part and the right part of the support plate 202 are each provided with a sliding groove 20201; each sliding groove 20201 is slidably provided with a limiting rod 203; the upper part of the support plate 202 is fixedly connected with another limiting rod 203; all the limiting rods 203 are jointly sleeved with a conveyor belt 8, and the conveyor belt 8 is triangular; the rear side of the support plate 202 is fixedly connected with a fixing block 204; the fixing block 204 is fixedly connected with a spring 205 on each side, and the two springs 205 are fixedly connected with the limiting rods 203 in the sliding grooves 20201.

4. The cylindrical secondary lithium battery pole piece cutting device according to claim 3, characterized in that, Further comprising a conveyor 301 installed on the right part of the base 1; the left part of the conveyor 301 is fixedly connected with a guide plate 302, and the left end of the guide plate 302 is close to the outer ring surface of the cylinder 2; the front part and the rear part of the conveyor 301 are each fixedly connected with a baffle 303; the base 1 is fixedly connected with a collection box 304, and the collection box 304 is located below the cylinder 2; the collection box 304 is fixedly connected with two left-right symmetrical brushes 305, and the bristles of the two brushes 305 are attached to the outer ring surface of the cylinder 2.

5. The cylindrical secondary lithium battery pole piece cutting device according to claim 1, characterized in that, The front side of the cylinder 2 is detachably connected with a protective net 2004.

6. The cylindrical secondary lithium battery pole piece cutting device according to claim 1, characterized in that, Each pin hole 8002 is provided with a metal sleeve.

7. The cylindrical secondary lithium battery pole piece cutting device according to claim 1, characterized in that, The conveyor belt 8 is internally provided with a metal steel wire.

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