CN210182521U

CN210182521U - Pole piece cutting mechanism, pole piece feeding device and button type battery cell production winding machine

Info

Publication number: CN210182521U
Application number: CN201921469365.3U
Authority: CN
Inventors: Haixia Cao; 曹海霞; Guanyang Qiao; 乔冠阳; Chunchao Yang; 杨春超; Zhenhui Liang; 梁振辉
Original assignee: Zhuhai Higrand Technology Co Ltd
Current assignee: Zhuhai Higrand Technology Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-03-24
Anticipated expiration: 2029-09-04

Abstract

The utility model provides a pole piece cuts mechanism, pole piece pan feeding device and button type electricity core film-making winder, pole piece cuts mechanism includes drive unit, the sliding seat slider, the cutter frame, second cutter and spring, be provided with first cutter on the sliding seat, be provided with the spout on the sliding seat, the spout extends and runs through the sliding seat along first direction, install in the spout slider slidable, drive unit installs on the sliding seat and drives the slider slip, first cutter is located the first end department of slider, the cutter frame articulates the second of slider and serves, second cutter fixed mounting is served at the first of cutter frame, form between the blade of second cutter and the blade of first cutter and cut the section, spring coupling is on the second end and the slider of cutter frame, spring drive second cutter moves around the axis of rotation of cutter frame to first cutter. And a pole piece feeding device and a button type cell production winding machine. The pole piece cutting mechanism has the advantages that the pole piece cutting position is accurate, and the notch burrs of the pole piece can be reduced or eliminated.

Description

Pole piece cutting mechanism, pole piece feeding device and button type battery cell production winding machine

Technical Field

The utility model belongs to the technical field of battery production facility technique and specifically relates to a pole piece cuts mechanism and is provided with pole piece pan feeding device, button type electricity core film-making winder that this pole piece cut mechanism.

Background

Lithium batteries are widely applied to industries such as notebook computers, electric tools, new energy automobiles and the like, and with the development of the industries, the demand of the lithium batteries is continuously increased, but the requirements on the lithium batteries are higher and higher. At present, the manufacturing of a lithium battery cell is performed by automatic processing of cell sheet-making and winding equipment, and the lithium battery cell is mainly manufactured by stacking a positive pole piece, a negative pole piece and a diaphragm according to a certain sequence and then performing winding and rubberizing treatment through the cooperation of a winding head, a pole piece feeding device, a diaphragm cutting device, a rubberizing device and the like. The cutting of the pole piece is one of important processes in the winding process of the lithium battery cell, and the cutting of the pole piece is mainly performed through a pole piece cutting mechanism of a pole piece feeding device. The current pole piece cuts the mechanism and cuts the pole piece through actuating mechanism drive cutter to the removal of cutter is led with guiding axle and guiding axle sleeve, however, because there is the fit clearance between guiding axle and the guiding axle sleeve, make the cutter rock easily by the drive removal in-process, lead to when cutting the pole piece, be difficult to form effectual shearing section between this cutter and the fixed cutter, it is uncertain to cause the pole piece to cut the position on the pole piece cutting mechanism, the pole piece incision burr after cutting is many, influence the quality of lithium battery electricity core.

Disclosure of Invention

In order to solve the problem, the main object of the present invention is to provide a pole piece cutting mechanism with accurate pole piece cutting position and capable of reducing or eliminating the burr of the cut of the pole piece.

Another object of the utility model is to provide a be provided with above-mentioned pole piece cut mechanism's pole piece pan feeding device.

The utility model discloses a still another purpose provides a button type electricity core film-making winder who is provided with above-mentioned pole piece pan feeding device.

In order to realize the main purpose of the utility model, the utility model provides a pole piece cutting mechanism, which comprises a driving unit, wherein, still include the sliding seat slider, the cutter frame, second cutter and spring, be provided with first cutter on the sliding seat, drive unit installs on the sliding seat, be provided with the spout on the sliding seat, the spout extends and runs through the sliding seat along first direction, the first end of slider is connected with drive unit's drive end, the slider is installed in the spout along first direction slidable, first cutter is located the first end department of slider, the cutter frame articulates on the second of slider is served, second cutter fixed mounting is served at the first of cutter frame, form between the blade of second cutter and the blade of first cutter and cut the section, spring coupling is on the second of cutter frame and slider, spring drive second cutter moves around the axis of rotation of cutter frame to first cutter.

It is from top to bottom visible, drive unit accessible slider drive second cutter removes towards first cutter, cut off with the pole piece that lies in between first cutter blade and the second cutter blade mouth, and at the articulated cutter rest of slider, and set up the second cutter on the cutter rest, set up the spring between cutter rest and slider, make the spring hug closely first cutter through cutter rest drive second cutter, so that the blade of the second cutter on the slider can aim at the blade of first cutter, and avoid the second cutter to remove the in-process and take place to rock, guarantee that the pole piece can be carried out the accuracy, reliably cut, thereby reduce or eliminate the burr of pole piece incision department.

According to a preferable scheme, the pole piece cutting mechanism further comprises a fixed seat and a fine adjustment unit, the sliding seat is connected with the fixed seat in a sliding mode along a second direction, the second direction is perpendicular to the first direction, the fine adjustment unit is fixedly installed on the fixed seat, and the fine adjustment unit drives the sliding seat to slide along the second direction.

Therefore, the fine adjustment unit is used for adjusting the distance between the pole piece cutting mechanism and the winding head of the electric core winding machine through the sliding seat, so that the pole piece can be better inserted into the winding needle of the winding head.

The further scheme is that the fine adjustment unit comprises a mounting seat and an adjusting bolt, the mounting seat is fixedly mounted on the fixing seat, the adjusting bolt is in threaded connection with the fixing seat, the adjusting bolt is rotatably connected with the sliding seat around the axis of the adjusting bolt, and the adjusting bolt is fixedly connected with the sliding seat in the axial direction of the adjusting bolt.

From the above, the fine adjustment unit can adopt the above simple bolt mechanism to perform manual fine adjustment on the sliding of the sliding seat, and of course, the fine adjustment unit can also adopt an electric driving mechanism.

According to a further scheme, the fixed seat is provided with a limiting block, and the limiting block and the fine adjustment unit are respectively positioned on two opposite sides of the sliding seat along the second direction.

It is from top to bottom visible, the stopper is used for carrying on spacingly to the slip of sliding seat, avoids the sliding seat excessive movement and leads to the friction too big between slider and the sliding seat to prevent that the slider from taking place bending deformation.

Another preferred scheme is that a first pole piece channel is formed between the first cutter and the second cutter, the pole piece cutting mechanism further comprises a dust collection unit, the dust collection unit is mounted on the sliding seat, the dust collection unit is located at the downstream end of the second cutter along the feeding direction of the first pole piece channel, and a suction inlet of the dust collection unit is arranged towards the extension line of the first pole piece channel.

Therefore, the dust collection unit is used for sucking away chips and burrs generated in the pole piece cutting process, and the phenomenon that the battery cell is short-circuited due to the fact that the chips and/or the burrs puncture the diaphragm is avoided. In addition, the dust collection unit is also used for sucking away the attached dust on the surface of the pole piece in the process of carrying out tape transport on the pole piece, so that the quality of the battery cell is ensured.

According to a further scheme, the pole piece cutting mechanism further comprises a guide piece, the guide piece is located at the downstream end of the first cutter along the feeding direction of the first pole piece channel, a second pole piece channel is formed between the guide piece and the dust collection unit, and one end, close to the first cutter, of the guide piece is bent or bent outwards towards the second pole piece channel.

Therefore, the guide piece guides the cut-out later section of the pole piece, and the later section of the pole piece can reliably enter the later-stage mechanism.

The second cutter is provided with a first limiting part facing the first cutter along the first direction, and the first limiting part is constantly adjacent to the first cutter.

It is from top to bottom visible, first spacing portion can carry on spacingly to the second cutter, avoids the second cutter to take place the dislocation collision when removing to first cutter.

The sliding block is provided with a first limiting part, and the first limiting part is positioned between the sliding seat and the driving unit.

Therefore, the second limiting part has a limiting effect on the sliding of the sliding block, the second cutter is prevented from moving excessively, and the second cutter or the sliding block is prevented from colliding with other parts.

In order to realize the utility model discloses a further purpose, the utility model provides a pole piece pan feeding device, including pole piece insertion mechanism and pole piece cutting mechanism, pole piece insertion mechanism cuts the mechanism material loading to the pole piece, and wherein, the pole piece cuts the mechanism and cuts the mechanism for foretell pole piece.

In order to realize the utility model discloses a further purpose, the utility model provides a button type electricity core film-making winder, a serial communication port, including foretell pole piece pan feeding device.

Drawings

Fig. 1 is a structural diagram of an embodiment of the pole piece cutting mechanism of the present invention.

Fig. 2 is a structural diagram of the pole piece cutting mechanism of the present invention after first omitting some components.

Fig. 3 is a second structural diagram of the pole piece cutting mechanism of the present invention without some components.

Fig. 4 is a schematic view of a first connection structure between the fine adjustment unit and the sliding seat of the pole piece cutting mechanism of the present invention.

Fig. 5 is a schematic view of a second connection structure between the fine adjustment unit and the sliding seat of the embodiment of the pole piece cutting mechanism of the present invention.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

Pole piece cuts mechanism embodiment:

referring to fig. 1 to 3, the pole piece cutting mechanism 100 includes a fixed base 1, a driving unit 2, a sliding base 3, a fine adjustment unit 4, a sliding block 5, a second cutter 6, a dust collection unit 7, a guide piece 8 and a spring 9.

Fixing base 1 is used for carrying out fixed connection with the frame of button-type electricity core film-making winder, and sliding seat 3 is connected with fixing base 1 slidable along second direction X2, and is provided with spout 31 on the sliding seat 3. The sliding groove 31 extends along a first direction X1, and the sliding groove 31 is disposed through the sliding seat 3, wherein the first direction X1 is perpendicular to the second direction X2.

The sliding block 5 is slidably installed in the sliding groove 31 along the first direction X1, the driving unit 2 is fixedly installed on the fixed seat 1, and the driving end of the driving unit 2 is fixedly connected with the first end of the sliding block 5, so that the driving unit 2 can drive the sliding block 5 to slide relative to the sliding seat 3 along the first direction X1. Preferably, the driving unit 2 is a cylinder, however, as an alternative, the driving unit 2 may also be a combination of a motor and a ball screw. Preferably, the sliding seat is provided with a cover 32, and the cover 32 covers the opening of the sliding groove 31, so as to limit the sliding block 5 in the sliding groove 31.

The fixing seat 1 is provided with a first cutter 30 at the second end of the slider 5, a cutter holder 60 is arranged between the second cutter 6 and the second end of the slider 5, specifically, the cutter holder 60 is hinged to the second end of the slider 5, the second cutter 6 is fixedly mounted at the first end of the cutter holder 60, and a shearing section a is formed between the cutting edge of the second cutter 6 and the cutting edge of the first cutter 30. Spring 9 is connected between the second end of cutter saddle 60 and slider 5, and spring 9 is used for driving second cutter 6 and removes around the axis of rotation of cutter saddle 60 to first cutter 30 for the blade of second cutter 6 on the slider 5 can aim at the blade of first cutter 30, and avoids second cutter 6 to remove the in-process and take place to rock, guarantees that the pole piece can be carried out accuracy, reliable cutting, thereby reduces or eliminates the burr of pole piece incision department.

In addition, the second cutter 6 is provided with the first limiting part 61, the first limiting part 61 extends towards the first cutter 30 along the first direction X1, the first limiting part 61 is constantly adjacent to the first cutter 30, the first limiting part 61 can limit the second cutter 6, the second cutter 6 is prevented from being dislocated with the first cutter 30 after retreating, and therefore the second cutter 6 is prevented from colliding with the first cutter 30 when moving towards the first cutter 30. And the slider 5 is provided with a second limiting part 51, the second limiting part 51 extends along a second direction X2, the second limiting part 51 is located between the sliding seat 3 and the driving unit 2, the second limiting part 51 limits the sliding of the slider 5, the second cutter 6 is prevented from moving excessively, and the second cutter 6 or the slider 5 is prevented from colliding with other parts.

The fine adjustment unit 4 is fixedly installed on the fixed seat 1, and the output end of the fine adjustment unit 4 is connected with the sliding seat 3. The fine adjustment unit 4 is used for driving the sliding seat 3 to slide along the second direction X2, and the fine adjustment unit 4 is used for adjusting the distance between the pole piece cutting mechanism 100 and the winding head of the electric core winding machine through the sliding seat 3, so that the pole piece can be better inserted into the winding needle of the winding head.

Preferably, the fine adjustment unit 4 comprises a mounting seat 41 and an adjustment bolt 42, the mounting seat 41 is fixedly mounted on the fixed seat 1, the bolt is in threaded connection with the fixed seat 1, and the adjustment bolt 42 is rotatably connected with the sliding seat 3 around its axis. In addition, in the axial of adjusting bolt 42, be fixed connection between adjusting bolt 42 and the sliding seat 3, when wrench movement adjusting bolt 42, adjusting bolt 42 itself can be along self axial displacement relatively fixing base 1 to drive sliding seat 3 and remove along second direction X2, realize the clearance adjustment between spout 31 and the slider 5.

As shown in fig. 4, the connection structure between the adjusting bolt 42 and the sliding seat 3 may be: the slide holder 3 is provided with a notch 33 having a T-shaped cross section, an engaging portion 43 having a T-shaped axial cross section is provided at an end of the adjusting bolt 42, the engaging portion 43 is engaged with the notch 33, and the engaging portion 43 is rotated about an axis of the adjusting bolt 42 relative to the notch 33.

As shown in fig. 5, as another alternative, the connection structure between the adjusting bolt 42 and the sliding seat 3 may also be: a mounting hole 34 is provided in the slide mount 3, and the mounting hole 34 is provided coaxially with the adjustment bolt 42. A bearing 44 is provided in the mounting hole 34, an outer ring of the bearing 44 is fitted into the mounting hole 34, and an inner ring of the bearing 44 is fitted over the adjusting bolt 42. Further, the adjusting bolt 42 may be sleeved with a snap spring at two ends of the bearing 44 to ensure that the bearing 44 is fixed on the adjusting bolt 42 and moves together with the adjusting bolt 42. Furthermore, the cutting section a is preferably perpendicular to the second direction X2, because the cutting section a perpendicular to the second direction X2 can better ensure the adjustment accuracy and the adjustment effect of the fine adjustment unit 4.

As shown in fig. 1, the fixed base 1 is further provided with a limit block 12, and along the second direction X2, the limit block 12 and the fine adjustment unit 4 are respectively located at two opposite sides of the sliding base 3. The limiting block 12 is used for limiting the sliding of the sliding seat 3, so that the excessive friction between the sliding block 5 and the sliding seat 3 caused by the excessive movement of the sliding seat 3 is avoided, and the sliding block 5 is prevented from bending and deforming.

A first pole piece passage L1 is formed between the first cutter 30 and the second cutter 6, and the first pole piece passage L1 is used to accommodate a pole piece such that the pole piece is located between the first cutter 30 and the second cutter 6. The dust suction unit 7 is installed on the fixed seat 1, and along the feeding direction X3 of the first pole piece channel L1, the dust suction unit 7 is located at the downstream end of the second cutter 6. The suction of the dust suction unit 7 is arranged towards the extension line of the first pole piece channel L1, and the dust suction unit 7 is connected with a vacuum extractor. The dust collection unit 7 is used for sucking away chips, burrs and the like generated in the pole piece cutting process, and the short circuit of the battery cell caused by the fact that the chips and/or the burrs puncture the diaphragm is avoided. In addition, the dust collection unit 7 is also used for sucking away dust attached to the surface of the pole piece in the process of transporting the pole piece, so that the quality of the battery cell is ensured.

The guide piece 8 is installed on the fixed seat 1, along the feeding direction X3 of the first pole piece channel L1, the guide piece 8 is located at the downstream end of the first cutter 30, a second pole piece channel L2 is formed between the guide piece 8 and the dust suction unit 7, and the second pole piece channel L2 is in the same straight line with the first pole piece channel L1. The guide blade 8 is bent or bent outwardly toward the second blade passage L2 at an end adjacent the first cutting blade 30. The guide piece 8 is used for guiding the cut-out later section of pole piece, and the later section of pole piece can reliably enter the later-stage mechanism.

To sum up, the utility model provides a pole piece cuts mechanism has the pole piece and cuts the advantage of the accurate and reducible or elimination pole piece incision burr in position.

Pole piece pan feeding device embodiment:

the pole piece feeding device comprises a pole piece inserting mechanism and a pole piece cutting mechanism, wherein the pole piece cutting mechanism is the pole piece cutting mechanism in the embodiment of the pole piece cutting mechanism. The pole piece inserting mechanism is used for sending the pole piece into the first pole piece channel, so that the pole piece is positioned between the first cutter and the second cutter. The pole piece feeding device provided with the pole piece cutting mechanism in the embodiment of the pole piece cutting mechanism can ensure the accurate cutting position of the pole piece and reduce or eliminate burrs at the cut opening of the cut pole piece.

Button electricity core film-making winder embodiment:

the button-type cell production winding machine in the embodiment is provided with the pole piece feeding device in the above pole piece feeding device embodiment, so that when the button-type cell production winding machine feeds and cuts pole pieces, the cutting position of the pole pieces can be ensured to be accurate, and burrs at the cut openings of the pole pieces after cutting are reduced or eliminated. And the button-type battery cell slice-making winder further comprises a winding head, a diaphragm conveying device, a diaphragm cutting device, a rubberizing device and other devices which are conventionally arranged on the battery cell slice-making winder, and therefore, redundant description is omitted again.

Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.

Claims

1. Pole piece cuts mechanism, including drive unit, its characterized in that still includes:

the cutting device comprises a sliding seat, a cutter and a driving unit, wherein a first cutter is arranged on the sliding seat, the driving unit is installed on the sliding seat, and a sliding groove is formed in the sliding seat and extends along a first direction and penetrates through the sliding seat;

the first end of the sliding block is connected with the driving end of the driving unit, the sliding block is slidably mounted in the sliding groove along the first direction, and the first cutter is located at the first end of the sliding block;

the cutting knife rest is hinged to the second end of the sliding block, the second cutter is fixedly mounted at the first end of the cutting knife rest, and a cutting section is formed between the cutting edge of the second cutter and the cutting edge of the first cutter;

the spring is connected to the second end of the cutter frame and the sliding block and drives the second cutter to move around the rotating axis of the cutter frame to the first cutter.

2. The pole piece cutting mechanism of claim 1, wherein:

the pole piece cutting mechanism further comprises:

the sliding seat is connected with the fixed seat in a sliding mode along a second direction, and the second direction is perpendicular to the first direction;

and the fine adjustment unit is fixedly arranged on the fixed seat and drives the sliding seat to slide along the second direction.

3. The pole piece cutting mechanism of claim 2, wherein:

the fine adjustment unit includes:

the mounting seat is fixedly mounted on the fixed seat;

the adjusting bolt is in threaded connection with the fixed seat, the adjusting bolt is rotatably connected with the sliding seat around the axis of the adjusting bolt, and the adjusting bolt is fixedly connected with the sliding seat in the axial direction of the adjusting bolt.

4. The pole piece cutting mechanism of claim 3, wherein:

the fixed seat is provided with a limiting block, and the limiting block and the fine adjustment unit are respectively positioned on two opposite sides of the sliding seat along the second direction.

5. The pole piece cutting mechanism of claim 1, wherein:

a first pole piece channel is formed between the first cutter and the second cutter;

the pole piece cutting mechanism further comprises a dust collection unit, the dust collection unit is installed on the sliding seat and follows the feeding direction of the first pole piece channel, the dust collection unit is located at the downstream end of the second cutter, and a suction inlet of the dust collection unit faces towards the extension line of the first pole piece channel.

6. The pole piece cutting mechanism of claim 5, wherein:

the pole piece cutting mechanism further comprises a guide piece, the feeding direction of the first pole piece channel is followed, the guide piece is located at the downstream end of the first cutter, a second pole piece channel is formed between the guide piece and the dust collection unit, and the guide piece is close to one end of the first cutter and faces towards the outer bending or bending of the second pole piece channel.

7. The pole piece cutting mechanism according to any one of claims 1 to 6, wherein:

the second cutter is provided with a first limiting part towards the first cutter along the first direction, and the first limiting part is constantly adjacent to the first cutter.

8. The pole piece cutting mechanism according to any one of claims 1 to 6, wherein:

the sliding block is provided with a second limiting part, and the second limiting part is positioned between the sliding seat and the driving unit.

9. Pole piece pan feeding device cuts the mechanism including pole piece insertion mechanism and pole piece, pole piece insertion mechanism to the pole piece cuts the material loading of mechanism, its characterized in that:

the pole piece cutting mechanism is the pole piece cutting mechanism of any one of the claims 1 to 8.

10. Button-type cell film-making winder, characterized in that includes the pole piece pan feeding device of above-mentioned claim 9.