CN218560555U

CN218560555U - Lithium battery pole piece cutting structure

Info

Publication number: CN218560555U
Application number: CN202222533785.1U
Authority: CN
Inventors: 高智逊; 严海宏; 汪月; 李盖敏; 徐煜询
Original assignee: Dongguan Yakang Precision Machinery Co Ltd
Current assignee: Dongguan Yakang Precision Machinery Co Ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-03-03
Anticipated expiration: 2032-09-23

Abstract

The utility model relates to a lithium battery pole piece cuts off structure, including stationary knife subassembly and moving the sword subassembly, move the sword subassembly and remove to stationary knife subassembly and decide the pole piece, move the sword subassembly including moving the sword cylinder, move the blade holder, move the sword fixing base, two suppress structure and die-cut sword, it sets firmly on moving the sword fixing base to move the sword cylinder, it moves the blade holder removal to move sword cylinder drive, two suppress structure and die-cut sword and set firmly on moving the blade holder, the stationary knife subassembly is including the stationary knife cylinder, the stationary knife seat, the stationary knife fixing base, two stationary knife sucking discs and fixed sword, the stationary knife cylinder sets firmly on the stationary knife fixing base, stationary knife cylinder drive stationary knife seat removes, two stationary knife sucking discs and fixed sword set firmly on the stationary knife seat. Above-mentioned lithium-ion battery pole piece cuts off structure adopts die-cutting sword and stationary knife complex mode to decide the pole piece, can guarantee that the pole piece can accurately be decided to effectively reduce the burr on the pole piece, improve the cutting efficiency of pole piece, the die-cutting sword is thick cutting edge, is difficult for breaking, long service life.

Description

Lithium battery pole piece cutting structure

Technical Field

The utility model belongs to the technical field of lithium cell production technique and specifically relates to a lithium battery pole piece cuts off structure is related to.

Background

The existing battery cell winding equipment is mainly used for winding and manufacturing a battery cell after positive plates, negative plates, diaphragms and the like are installed and stacked in a certain order, and performing adhesive tape sticking, short circuit detection and the like on the wound battery cell, so that the battery cell winding equipment has the advantages of high production efficiency, low production cost and low battery cell manufacturing rework rate.

However, after one roll of pole piece is used, when another roll of pole piece needs to be replaced, the pole piece is usually cut by a serrated knife, the tail of the old pole piece is cut, the roll of the old pole piece is replaced, and then the head of the new pole piece is bonded with the tail of the old pole piece in a manual mode. At present, a toothed cutter is generally used for punching a pole piece in an impact manner, the pole piece cannot be cut off or the section of the pole piece is serrated obviously, in the aspect of the service life of the cutter, the tail end of the toothed cutter is thin, the pole piece is easy to break after being cut off for many times, the precision is low by adopting a manual bonding mode, and after a pole piece belt is replaced, the pole piece belt needs to be calibrated for many times, so that the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a lithium-ion battery pole piece cuts off structure to solve above-mentioned technical problem, improve and cut off efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a lithium battery pole piece cuts off structure, including stationary knife subassembly with move the sword subassembly, move the sword subassembly to the stationary knife subassembly removes decides the pole piece, move the sword subassembly including moving the sword cylinder, moving the blade holder, moving the sword fixing base, two suppress the structure, die-cutting knife, the right side is equipped with the adhesive tape sucking disc and move the sword support, move the sword cylinder set firmly in move on the sword fixing base, move the blade holder rotate set up in move on the sword support, move the sword cylinder drive move the sword support and remove, two suppress the structure with die-cut sword set firmly in move on the blade holder, the die-cutting knife sets up between two suppress the structure, the right side is equipped with the adhesive tape sucking disc set up in move the upper end of blade holder, the stationary knife subassembly including stationary knife cylinder, stationary knife holder, stationary knife fixing base, two stationary knife sucking discs, fixed sword and stationary knife support, the stationary knife cylinder set firmly in on the stationary knife fixing base, the stationary knife cylinder align with the fixed sword fixing structure two fixed sword sucking discs, die-cut the fixed sword sucking disc, two fixed sword sucking discs are in fixed sword support.

As a preferred technical scheme, the punching knife comprises a punching knife body and guide parts, and the guide parts are arranged at two ends of the punching knife body.

As a preferred technical scheme, the fixed knife comprises a fixed knife body and two guide sleeves, the guide sleeves are arranged at two ends of the fixed knife body, the guide parts are located at two ends of the guide sleeves, the guide sleeves move, the fixed knife bodies are provided with two, the fixed knife bodies are respectively arranged on two fixed knife suckers, and the fixed knife bodies are oppositely arranged.

As a preferred technical scheme, the two sides of the punching cutter body are provided with sunk grooves.

As a preferred technical scheme, a filter disc is further arranged on the fixed cutter seat, and the filter disc is arranged between the fixed cutter suction disc and the fixed cutter seat.

As a preferred technical scheme, a movable knife guide post is arranged on the movable knife bracket, one end of the movable knife guide post is fixedly arranged on the movable knife bracket, the movable knife guide post is arranged on the movable knife fixing seat in a penetrating manner, and the movable knife cylinder drives the movable knife bracket to move along the movable knife guide post.

As a preferred technical scheme, the movable knife assembly further comprises a movable knife rotating cylinder, and the movable knife rotating cylinder drives the movable knife holder to rotate relative to the movable knife bracket.

As a preferred technical scheme, the suppressing structure comprises a suppressing sucker, a spring and a guide shaft, one end of the guide shaft is fixedly arranged on the suppressing sucker, the guide shaft penetrates through the movable cutter holder, one end of the spring is abutted against the suppressing sucker, and the other end of the spring is abutted against the movable cutter holder.

The beneficial effects of the utility model reside in that: above-mentioned lithium battery pole piece cuts off structure adopts die-cutting knife and stationary knife complex mode to decide the pole piece, can guarantee that the pole piece can be accurately decided to effectively reduce the burr on the pole piece, improve the efficiency of cutting off of pole piece, the die-cutting knife is thick cutting edge, is difficult for the rupture, long service life, but also can realize the automatic exchange area, improvement production efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a lithium battery pole piece cutting structure according to the present invention;

fig. 2 is a side view of a lithium battery pole piece cutting structure according to the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at D;

fig. 4 is a sectional view of the stationary blade holder according to the present invention;

fig. 5 is a schematic structural view of a punching knife according to the present invention;

fig. 6 is a cross-sectional view at E-E in fig. 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1, a lithium battery pole piece cutting structure comprises a fixed cutter component 2 and a movable cutter component 1, wherein the movable cutter component 1 moves towards the fixed cutter component 2 to cut pole pieces, the movable cutter component 1 attaches adhesive paper to new and old pole pieces, and then the pole pieces are subjected to tape exchange.

Referring to fig. 1, 2 and 3, the moving blade assembly 1 includes a moving blade cylinder 11, a moving blade holder 12, a moving blade holder 13, an upper pressing structure 14, a lower pressing structure 15, a punching blade 16, a right adhesive suction cup 17, a moving blade holder 18 and a moving blade rotating cylinder 19, the moving blade cylinder 11 is fixed on the moving blade holder 13, the moving blade holder 12 is rotatably disposed on the moving blade holder 18, the moving blade holder 18 is provided with a moving blade guide post 181, one end of the moving blade guide post 181 is fixed on the moving blade holder 18, the moving blade guide post 181 penetrates the moving blade holder 13 and is used for controlling the moving direction of the moving blade holder 18, the moving blade cylinder 11 drives the moving blade holder 18 to move along the moving blade guide post 181, so as to drive the moving blade holder 12 to move, the moving blade rotating cylinder 19 drives the moving blade holder 12 to rotate relative to the moving blade holder 18, the upper pressing structure 14, the lower pressing structure 15 and the punching blade 16 are fixed on the moving blade holder 12, and towards the fixed knife assembly 2, the punching knife 16 is arranged between the upper elastic structure 14 and the lower elastic structure 15, the right adhesive suction cup 17 is arranged at the upper end of the movable knife holder 12 and used for adsorbing adhesive paper, the upper elastic structure 14 comprises an upper elastic suction cup 141, a first spring 142 and a first guide shaft 143, one end of the first guide shaft 143 is fixedly arranged with the upper elastic suction cup 141, the first guide shaft 143 is arranged on the movable knife holder 12 in a penetrating manner, one end of the first spring 142 is abutted against the upper elastic suction cup 141, the other end is abutted against the movable knife holder 12, the lower elastic structure 15 comprises a lower elastic suction cup 151, a second spring 152 and a second guide shaft 153, one end of the second guide shaft 153 is fixedly arranged with the lower elastic suction cup 151, the second guide shaft 153 is arranged on the movable knife holder 12 in a penetrating manner, one end of the second spring 152 is abutted against the lower elastic suction cup 151, and the other end is abutted against the movable knife holder 12.

As shown in fig. 1, 2, 3 and 4, the fixed blade assembly 2 includes a fixed blade cylinder 21, a fixed blade seat 22, a fixed blade fixing seat 23, an upper fixed blade suction cup 24, a lower fixed blade suction cup 25, a fixed blade 26, a left adhesive suction cup 27, a fixed blade support 28 and a fixed blade rotating cylinder 29, the fixed blade cylinder 21 is fixed on the fixed blade fixing seat 23, the fixed blade seat 22 is rotatably disposed on the fixed blade support 28, the fixed blade support 28 is provided with a fixed blade guide column 281, one end of the fixed blade guide column 281 is fixed on the fixed blade support 28, the fixed blade guide column 281 is penetrated on the fixed blade fixing seat 23 for controlling the moving direction of the fixed blade support 28, the fixed blade cylinder 21 drives the fixed blade support 28 to move along the fixed blade guide column 281 to drive the fixed blade seat 22 to move, the fixed blade support 22 drives the fixed blade seat 22 to rotate relative to the fixed blade support 28, the upper fixed blade suction cup 24, the lower fixed blade seat 25 and the fixed blade support 22 are fixedly disposed between the fixed blade seat 24 and the fixed blade seat, the fixed blade seat 221, the upper fixed blade suction cup 221 is disposed between the fixed blade seat and the fixed blade seat 25, the fixed blade suction cup 221, the fixed blade seat 16 is disposed between the fixed blade seat and the fixed blade seat for preventing the fixed blade seat from moving, the fixed blade seat from the fixed blade seat 16, the fixed blade seat 221, and the filter suction cup 25, and the filter suction cup 221, and the filter suction cup 16.

As shown in fig. 4, 5 and 6, the punching blade 16 includes a punching blade 161 and a guiding portion 162, the guiding portion 162 is disposed at two ends of the punching blade 161, the fixed blade 26 includes a fixed blade 261 and a guiding sleeve 262, the guiding sleeve 262 is disposed at two ends of the fixed blade 261, the guiding portion 162 moves in the guiding sleeve 262, two fixed blades 261 are disposed, one fixed to the upper fixed blade suction cup 24 and near one end of the lower fixed blade suction cup 25, the other fixed to the lower fixed blade suction cup 25 and near one end of the upper fixed blade suction cup 24, the upper fixed blade suction cup 24 and the lower fixed blade suction cup 25 are made of a7075 material, the distance between the two fixed blades 261 is H, the thickness of the punching blade 161 is H, H is 1-10mm, and H is slightly smaller than H, the value of H-H is 0.01-0.2mm, when the movement is avoided, the punching blade 161 collides with the fixed blade 261, two sides of the punching blade 161 are disposed with a sinking groove 163, the width of the sinking groove 163 b is 262 a, the distance of the fixed blade 261 is 262 a, the guiding sleeve is preferably, the guiding sleeve is a guiding sleeve 162, the guiding sleeve 162 and the guiding sleeve 162 can be moved to ensure that the punching blade 16 mm, and the guiding sleeve can be moved when the punching blade enters the guiding sleeve 16 and the punching blade.

When the cutting structure of the lithium battery pole piece is used, one roll of pole piece is used up (called as an old pole piece below), another new layer of pole piece is pulled to a position between the fixed cutter component 2 and the movable cutter component 1, the fixed cutter cylinder 21 drives the fixed cutter support 28 to move along the fixed cutter guide post 281 so as to drive the fixed cutter seat 22 to move, the upper fixed cutter suction cup 24, the lower fixed cutter suction cup 25 and the fixed cutter 26 extend out so as to enable the guide part 162 to enter the guide sleeve 262, the movable cutter cylinder 11 drives the movable cutter support 18 to move along the movable cutter guide post 181 so as to drive the movable cutter seat 12 to move, the upper fixed cutter suction cup 24 is in contact with the upper elastic suction cup 141, the lower fixed cutter suction cup 25 is in contact with the lower elastic suction cup 151, the upper fixed cutter suction cup 24, the upper elastic suction cup 141, the lower fixed cutter suction cup 25 and the lower elastic suction cup 151 respectively adsorb the old pole piece and the new pole piece, the movable cutter cylinder 11 continues to drive, the first spring 142 and the second spring 152 are compressed, further, the punching blade 161 can enter between the two fixed blades 261 to cut the old pole piece and the new pole piece, at this time, the upper fixed blade suction cup 24 and the upper elastic suction cup 141 respectively adsorb the waste material on the tail portion of the old pole piece and the end portion of the new pole piece, the lower fixed blade suction cup 25 and the lower elastic suction cup 151 respectively adsorb the waste material on the tail portion of the old pole piece and the head portion of the new pole piece, the movable blade cylinder 11 and the fixed blade cylinder 21 respectively reset, the unwinding mechanism winds the waste material on the end portion of the new pole piece away, the waste material winding mechanism winds the waste material on the end portion of the new pole piece away, the movable blade cylinder 11 and the fixed blade cylinder 21 are pushed out again, the upper fixed blade suction cup 24 adsorbs the tail portion of the old pole piece, the lower fixed blade suction cup 25 adsorbs the head portion of the new pole piece, the movable blade cylinder 11 resets to adsorb the gummed paper onto the right gummed paper gummed suction cup 17, the movable blade rotating cylinder 19 drives the movable blade holder 12 to rotate 90 degrees relative to the movable blade holder 18, so that the right gummed suction cup 17 is aligned with the upper fixed blade suction cup 24 and the lower fixed blade suction cup 25, and the moving knife cylinder 11 drives to attach the gummed paper on the right gummed suction cup 17 to the tail part of the old pole piece and the head part of the new pole piece, so that the old pole piece and the new pole piece are fixed to complete the exchange belt of the pole pieces at one time.

The above-mentioned embodiments are merely preferred examples of the present invention, and do not limit the scope of the present invention, so all equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.

Claims

1. The utility model provides a lithium battery pole piece cuts off structure, a serial communication port, including the stationary knife subassembly with move the sword subassembly, move the sword subassembly to the stationary knife subassembly removes decides the pole piece, move the sword subassembly including moving the sword cylinder, moving the blade holder, moving sword fixing base, two suppress structures, die-cutting sword, the right side and be equipped with gluey sucking disc and move the sword support, move the sword cylinder set firmly in move on the sword fixing base, move the blade holder rotate set up in move on the sword support, move the drive of sword cylinder move the sword support and remove, two suppress structures with die-cut sword set firmly in move on the blade holder, the die-cutting sword sets up between two suppress structures, the right side be equipped with gluey sucking disc set up in move the upper end of blade holder, the stationary knife subassembly including stationary knife cylinder, stationary knife seat, stationary knife fixing base, two stationary knife sucking discs, fixed sword and stationary knife support, the stationary knife cylinder set firmly in on the stationary knife fixing base, the stationary knife cylinder set firmly in the fixed sword cylinder with the fixed sword aligns two stationary knife sucking discs, the fixed sword structure with the fixed sword is pressed the fixed sword, the fixed sword aligns between the fixed sword structure.

2. The lithium battery pole piece cutting structure of claim 1, wherein the punching knife comprises a punching knife body and guiding parts, and the guiding parts are arranged at two ends of the punching knife body.

3. The lithium battery pole piece cutting structure of claim 2, wherein the fixed knife comprises two fixed knife bodies and two guide sleeves, the guide sleeves are disposed at two ends of the fixed knife bodies, the guide portion moves in the guide sleeves, the two fixed knife bodies are respectively disposed on two fixed knife suckers, and the two fixed knife bodies are disposed oppositely.

4. The lithium battery pole piece cutting structure according to claim 2 or 3, wherein the punching blade body is provided with sinking grooves at both sides.

5. The lithium battery pole piece cutting structure as claimed in claim 4, wherein a filter disc is further arranged on the fixed cutter seat, and the filter disc is arranged between the fixed cutter suction disc and the fixed cutter seat.

6. The lithium battery pole piece cutting structure of claim 5, wherein the moving blade support is provided with a moving blade guide post, one end of the moving blade guide post is fixedly arranged on the moving blade support, the moving blade guide post penetrates through the moving blade fixing seat, and the moving blade cylinder drives the moving blade support to move along the moving blade guide post.

7. The lithium battery pole piece cutting structure as claimed in claim 6, wherein the moving blade assembly further comprises a moving blade rotating cylinder, and the moving blade rotating cylinder drives the moving blade holder to rotate relative to the moving blade bracket.

8. The lithium battery pole piece cutting structure of claim 7, wherein the elastic structure comprises an elastic suction cup, a spring and a guide shaft, one end of the guide shaft is fixedly connected with the elastic suction cup, the guide shaft penetrates through the movable cutter holder, one end of the spring is abutted against the elastic suction cup, and the other end of the spring is abutted against the movable cutter holder.