CN114436026A

CN114436026A - Lithium battery pole piece anti-curling device

Info

Publication number: CN114436026A
Application number: CN202111579435.2A
Authority: CN
Inventors: 赵元; 钱顺友; 李华; 张扬
Original assignee: Guizhou Meiling Power Supply Co Ltd
Current assignee: Guizhou Meiling Power Supply Co Ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-06

Abstract

This scheme discloses a lithium battery pole piece anti-curling device in lithium cell coating machine field, including support frame, crossbeam and two depression bars, the both ends of support frame are connected with the side stand, two the upper end of side stand is connected with the both ends of crossbeam, has seted up two regulation holes on the crossbeam, two in two regulation holes are worn to locate respectively by the depression bar, threaded connection has the nut on the depression bar, and the nut supports in the upper surface of crossbeam. This scheme is through the depression bar and support frame, crossbeam isotructure of support depression bar, and the depression bar is exerted pressure to the both sides of pole piece, and the side fold, the turn-up of effectual pole piece that prevents takes place disconnected area phenomenon when the pole piece passes through the roll, improve film-making efficiency, reduce workman's intensity of labour.

Description

Lithium battery pole piece anti-curling device

Technical Field

The invention relates to the field of lithium battery coating machines, in particular to an anti-curling device for a lithium battery pole piece.

Background

The coating machine is mainly used for the surface coating process of films, paper and the like, and the coating machine is used for coating a layer of glue, paint or ink with a specific function on a coiled substrate, drying and then rolling. The coating machine adopts a special multifunctional coating head, can realize the surface coating production in various forms, and the winding and unwinding of the coating machine are all provided with full-speed automatic film receiving mechanisms which are automatically controlled by a PLC program.

The coating machine is key process equipment for producing the battery pole piece. In the production link of lithium batteries, the production process has the characteristics of high value and high technical content of coating, slicing, winding, liquid injection, capacity differentiation and the like. The development result of the pole piece coating machine in China is excellent, the localization of local equipment is basically realized, and the pole piece coating machine is exported to Japan, Korea and other countries.

The basic working flow of the existing coating machine is that various active substances, binding agents and other materials are coated on the surface of a current collector, then the current collector is dried by a heating box to obtain a pole piece, and finally the pole piece is stored in a coiled mode. However, after various materials coated on the surface of the current collector come out of the heating box of the coating machine, the problem of wrinkle and edge curling can occur on two sides of the pole piece, and the materials coated on the surface of the pole piece can crack and fall off in severe cases, so that the performance index of the pole piece is influenced. At present, in order to prevent the situation of the broken belt of the pole piece, the commonly adopted method is to manually level the wrinkles and the curled edges on the two sides by fingers so that the wrinkles and the curled edges pass through the first roller smoothly, the situation of the broken belt of the pole piece can be greatly avoided, but the labor intensity of workers can be increased if the production is carried out in large batch, and the production efficiency is low. Therefore, the invention is needed to overcome the problem of curling after drying the pole pieces, so as to improve the production efficiency and reduce the labor intensity of workers.

Disclosure of Invention

The invention aims to provide an anti-curling device for a lithium battery pole piece, which solves the problem that a pole piece taken out of a heating box of a coating machine in the prior art is curled and folded to cause a strip to be broken easily.

In this scheme a lithium-ion battery pole piece anti-curling device, including support frame, crossbeam and two depression bars, the both ends of support frame are connected with the side stand, two the upper end of side stand is connected with the both ends of crossbeam, has seted up two regulation holes on the crossbeam, two in two regulation holes are worn to locate respectively by the depression bar, threaded connection has the nut on the depression bar, and the nut supports in the upper surface of crossbeam.

The working principle of the scheme is as follows: after the device is arranged in a heating box of a coating machine, a pole piece coming out from the tail end of the heating box is drawn to the lower part of a pressure rod, the bottom of the pressure rod is in contact with the two sides of the pole piece, the pressure of the pressure rod can prevent the two sides of the pole piece from wrinkling and curling, and then the pole piece can smoothly enter the next procedure.

The nut is connected to the pressing rod through threads, the nut is supported on the upper surface of the cross beam, the pressing rod below the cross beam can be adjusted in position through the adjusting nut on the pressing rod, the pressing depth of the two sides of the antipodal segment is controlled, then the pressing rod is enabled to be located at a more appropriate position to apply effective pressure to the antipodal segment, and finally the anti-curling effect is achieved.

The beneficial technical effect of this scheme is: according to the scheme, the pressing rod and the supporting frame and the cross beam of the supporting pressing rod are adopted, the pressing rod applies pressure to the two sides of the pole piece, so that the side edge of the pole piece is effectively prevented from being folded and curled, the phenomenon that the pole piece is broken is avoided, the quality of the prepared pole piece is improved, and the labor intensity of workers is reduced.

Furthermore, the adjusting holes are strip-shaped, and the length direction of the adjusting holes is the same as that of the cross beam. The pressure bars move in the adjusting holes, so that the distance between the two pressure bars is adjusted, and the positions of the pressure bars on the pole pieces are adjusted so as to be suitable for the pole pieces with different widths.

Furthermore, the two sides of the cross beam in the length direction are connected with baffle plates, one side of each baffle plate facing the nut is provided with a limiting groove, and the edge of the nut is clamped into the limiting groove. The outer wall of nut all is polygonal usually, and the nut outside receives the spacing of spacing groove in this scheme, and the nut can not rotate, adjusts more easily when rotating depression bar regulation depression bar height.

Furthermore, the side upright post is connected with the cross beam through a first joint, one end of the first joint is fixedly connected with the side upright post, and the other end of the first joint is connected with the cross beam in a sliding mode in the horizontal direction. Connect side stand and crossbeam through first joint in this scheme, can enough ensure that the crossbeam can support, can dismantle the crossbeam through sliding beam again when needs.

Further, the lower surface of the other end of the first joint is provided with a dovetail joint, two dovetail joints are formed between the baffle and the cross beam, the dovetail joints are connected in the dovetail joints in a sliding mode, and two ends of the cross beam are detachably connected with stop blocks. The stop prevents the first joint from accidentally slipping off the cross beam.

Furthermore, the top of the pressure lever is connected with an adjusting wrench, the adjusting wrench comprises a connecting ring sleeved on the pressure lever, and the outer side of the connecting ring is connected with a wrench handle. The rotation depression bar that can relax is adjusted the spanner through twisting, and then adjusts the depression bar in the height of pole piece top.

Further, a lithium-ion battery pole piece anti-curling device still includes the carry over pinch rolls, and the both ends and the side column of carry over pinch rolls are connected, and the carry over pinch rolls is located the oblique below of crossbeam. The pole piece that comes out in the heating cabinet bypasses the carry over pinch rolls after the depression bar, then gets into next process, and the pole piece changes the direction behind the carry over pinch rolls, makes the natural vertical migration of pole piece, promotes the continuous movement of pole piece.

Further, the carry over pinch rolls include the inner core and cup joint the sleeve outside the inner core through ball bearing, be connected with the second on the side stand and connect, the tip and the second of inner core connect fixed connection. The pole piece passes through from the sleeve, relies on frictional force each other to make the sleeve rotate, and then more is favorable to promoting the pole piece and removes at the uniform velocity.

Furthermore, the lower end of the pressure rod is connected with a hemispherical press block, and the cambered surface of the press block faces downwards. The hemispherical press block arc-shaped surface is contacted with the surface of the pole piece, so that the contact part of the press block and the pole piece is ensured not to have sharp edges and corners to puncture, pierce and puncture the pole piece, and the influence on the performance of the pole piece coated with the material is reduced to the maximum extent.

Drawings

FIG. 1 is a schematic structural diagram of an anti-curling device for a lithium battery pole piece according to the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is an enlarged view of fig. 1 at B.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the heating device comprises a heating box 1, a pole piece 2, a support frame 3, a cross beam 401, a baffle 402, a limiting groove 403, a connecting ring 501, a wrench handle 502, a pressure rod 503, a nut 504, a pressing block 505, a dovetail 601, a first joint 602, a side upright column 603, a second joint 604, a sleeve 701 and an inner core 702.

The embodiment is basically as shown in the attached figures 1, 2 and 3: the utility model provides a lithium battery pole piece anti-curling device, includes support frame 3, crossbeam 401, carry over pinch rolls and two depression bars 503, has seted up the regulation hole of two bars on the length direction of crossbeam 401, and the both sides of crossbeam 401 length direction are connected with baffle 402, constitute the dovetail between both sides baffle 402 and the crossbeam 401.

Two depression bars 503 wear to locate respectively in two adjusting holes, and the lower extreme of depression bar 503 is connected with hemispherical briquetting 505, and the cambered surface of briquetting 505 is down, and the middle part of depression bar 503 is equipped with the screw thread section, and screw thread section threaded connection has nut 504, and nut 504 supports in the upper surface of crossbeam 401 and is located between two baffles 402, and baffle 402 has seted up spacing groove 403 towards one side of nut 504, and the edge card of nut 504 is gone into in the spacing groove 403. The top of depression bar 503 is connected with the regulation spanner, adjusts the spanner and includes cup joints go-between 501 on depression bar 503, sets up jaggedly on the go-between 501, and breach department is through bolted connection, makes the firm cup joint of go-between 501 on depression bar 503 through adjusting bolt, and the outside of go-between 501 is connected with two spanner handles 502.

The both ends of support frame 3 are connected with side stand column 603, and the top of side stand column 603 is connected with first joint 602 and connects, and the one end and the side stand column 603 fixed connection of first joint 602, the lower surface of the first joint 602 other end are equipped with dovetail 601, and dovetail 601 sliding connection is in the dovetail groove that constitutes between board and crossbeam 401, and the both ends of crossbeam 401 can be dismantled and be connected with the dog.

The pulling roll comprises an inner core 702 and a sleeve 701 journalled over the inner core 702 by ball bearings. The middle part of the side upright column 603 is fixedly connected with a second joint 604, one end of the second joint 604 is provided with a through hole, the end part of the second joint 604 is provided with a gap 605 communicated with the through hole, the gap 605 is also connected through a bolt, two ends of the inner core 702 are respectively positioned in the through holes of the two second joints 604, and the bolt at the gap 605 is adjusted to enable the end part of the inner core 702 to be tightly pressed and fixed in the through hole.

The first joint 602 is oriented opposite the free end of the second joint 604 such that the pull roll is diagonally below the beam 401.

The specific implementation process is as follows: arrange the device in 1 end of heating cabinet of coating machine, pole piece 2 that comes out from 1 end of heating cabinet draws the below of depression bar 503, the carry over pinch rolls is walked around again afterwards, the briquetting 505 of depression bar 503 bottom and the upper surface contact of 2 both sides of pole piece, pole piece 2 receives the pressure effect of depression bar 503 and can prevent that its both sides from taking place the phenomenon of fold turn-up, pole piece 2 passes through from sleeve 701, rely on frictional force each other to make sleeve 701 rotate, and then more be favorable to promoting 2 uniform velocity movements of pole piece, and then make pole piece 2 can level and smooth and easy get into next process.

The nut 504 is connected to the pressing rod 503 through threads, the nut 504 is supported on the upper surface of the cross beam 401, the position of the nut 504 on the pressing rod 503 can be adjusted by screwing the wrench handle 502, the length of the pressing rod 503 below the cross beam 401 is further adjusted, the pressing rod 503 is enabled to be located at a more proper position to effectively apply pressure to the pole piece 2, and finally the anti-curling effect is achieved.

Claims

1. The utility model provides a lithium battery pole piece anti-curling device which characterized in that: including support frame, crossbeam and two depression bars, the both ends of support frame are connected with the side stand, two the upper end of side stand is connected with the both ends of crossbeam, has seted up two regulation holes on the crossbeam, two the depression bar is worn to locate two regulation holes respectively, and threaded connection has the nut on the depression bar, and the nut supports in the upper surface of crossbeam.

2. The lithium battery pole piece anti-curling device of claim 1, wherein: the adjusting holes are in a strip shape, and the length direction of the adjusting holes is the same as that of the cross beam.

3. The lithium battery pole piece anti-curling device of claim 2, wherein: the two sides of the cross beam in the length direction are connected with baffle plates, one side of each baffle plate, facing to the corresponding nut, is provided with a limiting groove, and the edge of each nut is clamped into the limiting groove.

4. The lithium battery pole piece anti-curling device of claim 3, wherein: the side upright posts are connected with the cross beam through first joints, one ends of the first joints are fixedly connected with the side upright posts, and the other ends of the first joints are connected with the cross beam in a sliding mode in the horizontal direction.

5. The lithium battery pole piece anti-curling device of claim 4, wherein: the lower surface of the other end of the first joint is provided with a dovetail joint, two dovetail grooves are formed between the baffle and the cross beam, the dovetail joint is connected in the dovetail grooves in a sliding mode, and two ends of the cross beam are detachably connected with stop blocks.

6. The lithium battery pole piece anti-curling device according to any one of claims 3 to 5, characterized in that: the top of the pressure lever is connected with an adjusting wrench, the adjusting wrench comprises a connecting ring sleeved on the pressure lever, and the outer side of the connecting ring is connected with a wrench handle.

7. The lithium battery pole piece anti-curling device of claim 6, wherein: still include the carry over pinch rolls, the both ends and the side stand of carry over pinch rolls are connected, and the carry over pinch rolls is located the oblique below of crossbeam.

8. The lithium battery pole piece anti-curling device of claim 7, wherein: the carry over pinch rolls include the inner core and cup joint the sleeve outside the inner core through ball bearing, be connected with the second on the side stand and connect, the tip and the second of inner core connect fixed connection.

9. The lithium battery pole piece anti-curling device of any one of claims 1-5, 7 and 8, wherein: the lower end of the pressure rod is connected with a hemispherical pressure block, and the cambered surface of the pressure block faces downwards.