CN218731172U

CN218731172U - Air knife tab flattening device

Info

Publication number: CN218731172U
Application number: CN202222632136.7U
Authority: CN
Inventors: 俞琦; 汪清; 夏善伟; 汪波
Original assignee: Anhui Juyi Technology Co Ltd
Current assignee: Anhui Juyi Technology Co Ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-03-24
Anticipated expiration: 2032-10-08

Abstract

The utility model discloses an air knife lug flattening device which is applied to electrical core production equipment and comprises a driving roller, an air knife mechanism and a lug guide mechanism; the driving roller is used for driving the pole piece to move; the air knife mechanism is horizontally arranged above the pole piece and is positioned at one end close to the input end of the pole piece, an air knife head is arranged on the air knife mechanism, the direction of airflow blown out by the air knife head faces to the position of the pole lug, and the air knife head is used for blowing the pole lug from the inner side to the outer side of the pole piece, so that the primary flattening of the folded and tilted pole lug is realized; the lug guide mechanism is provided with a guide sheet, the guide sheet is positioned above the transmission roller, and the position of the guide sheet is opposite to the position of a moving route of a lug on the pole piece; the guide plate is matched with the driving roller to perform secondary smoothing on the electrode lug. The adjustable tab guide mechanism with the sensor and the adjustable tab air knife mechanism are mainly used for preventing the tab from being folded when a pole piece is wound through a driving roller or the pole piece, and the yield of the battery cell is improved.

Description

Air knife tab flattening device

Technical Field

The utility model relates to a lithium cell electricity core production facility field, concretely relates to air knife utmost point ear smooths device.

Background

The lithium battery core is usually composed of positive and negative pole pieces, a diaphragm and electrolyte, wherein the semi-finished products of the positive and negative pole pieces in the battery production process are usually in a coil material state, lugs uniformly distributed at intervals exist on the coil material of the pole pieces, and the cylindrical/square battery core is manufactured through a winding/cutting and stacking process. The pole lugs on the pole piece can be produced by die cutting, laser die cutting and other technologies. In the processes of tab forming, pole piece winding, slicing and the like, pole pieces with tabs need to complete various procedures through various driving rollers.

The thickness of utmost point ear is very thin, and especially negative pole utmost point ear receives gravity to influence easily and produces the pendulum or have the fold, leads to utmost point ear when taking place the direction of motion change along with the pole piece through the driving roller, or when the pole piece was convoluteed, the utmost point ear phenomenon of turning over appears. Generally, in a battery cell manufacturing process, a pole piece needs to pass through dozens of driving rollers, the phenomenon that the pole lug is folded or even torn easily occurs, and the battery cell yield is seriously influenced. In order to solve the above problems, it is necessary to provide a tab flattening device capable of preventing the tab from being folded along with the movement of the pole piece.

The existing lug flattening device adopts a guide sheet and a guide roller to solve the problem that the lug is influenced by external force to generate swaying, for example, a Chinese patent 'lug flattening guide mechanism, a transmission roller unit and a square power electric core winder' with the application number of 201911423995.1 and a Chinese patent 'a lug folding prevention device and a winder' with the application number of 202011162781.6; however, when the tilting angle of the tab is too large, the method cannot avoid the phenomenon of the tab folding, and the tab may be scratched and dust is accumulated on the guide plate.

Some of the pole pieces are extruded by adopting a movable pressing block, so that the adverse phenomena of pole piece folding, disorder and the like in the pole piece winding process are avoided, for example, the Chinese patent with the application number of 202111582824.0, namely a pole piece flattening mechanism and a cell processing system; however, the method also cannot deal with the problem of overlarge tilting angle of the tab, and the mechanism is not suitable for being applied to a driving roller. Also, in the chinese patent No. 201610532519.3, "tab leveling device", for example, the tab leveling device can not cope with the severe tilting of the tab, and can only level the tab in one direction.

To sum up, the prior art generally adopts structures such as guide vane to solve the pole lug that the pole piece takes place through the driving roller and turns over a problem, but the mode of contact in kind such as guide vane, guide idler wheel or brush meets the pole lug and turns over the pole lug that probably directly the pressure when the perk angle of pole lug is too big, can't avoid the pole lug to turn over a phenomenon, probably scratch pole lug simultaneously to pile up the pole piece dust on structures such as guide vane.

Disclosure of Invention

For overcoming prior art's defect, the utility model aims to provide a device is pacified to wind sword utmost point ear to solve current device of pacifying and can't avoid utmost point ear to turn over the problem of rolling over phenomenon, scratch.

Therefore, the utility model provides an air knife pole ear smoothing device, which comprises a driving roller, an air knife mechanism and a pole ear guiding mechanism; the transmission roller is used for driving the pole piece to move; the air knife mechanism is horizontally arranged above the pole piece and is positioned at one end close to the input end of the pole piece, an air knife head is arranged on the air knife mechanism, the direction of airflow blown out by the air knife head faces the position of the pole lug, and the air knife head is used for blowing the pole lug from the inner side to the outer side of the pole piece, so that the primary flattening of the folded and tilted pole lug is realized; the pole lug guide mechanism is provided with a guide sheet, the guide sheet is positioned above the driving roller, and the position of the guide sheet is opposite to the position of a moving route of the pole lug on the pole piece; the guide sheet is matched with the driving roller to perform secondary smoothing on the electrode lug.

Furthermore, the number of the air knife mechanisms and the number of the air knife heads are two, and the two air knife heads are symmetrically arranged on the upper side and the lower side of the pole piece.

Further, the air knife mechanism is arranged on one horizontal side of the tab guide mechanism.

Furthermore, the guide plate is connected to the lug guide mechanism through an adjusting bolt, and the adjusting bolt is used for adjusting the distance between the guide plate and the pole piece.

Further, the guide sheet is located right above the moving track of the tab.

Further, the direction piece has arc direction section and level and smoothes the section, the arc direction section perk upwards plays the guide effect, it is right that the level smoothes the section be used for utmost point ear smoothes.

Furthermore, a sensor is further arranged on the pole lug guide mechanism and is positioned on the front side of one end of the guide piece inlet.

Furthermore, a horizontal support rod and a locking ring are further arranged on the lug guide mechanism, and the locking ring is used for adjusting the horizontal inclination angle of the guide sheet.

Further, the wind knife head and the wind knife mechanism are also connected through the locking ring so as to adjust the blowing-out airflow direction of the wind knife head.

The utility model provides a device is pacified to air knife utmost point ear has following beneficial effect:

1) The utility model discloses a device is pacified to utmost point ear compact structure is succinct, and the mode that adds the guide vane through the air knife air current realizes that utmost point ear is pacified, can adapt to utmost point ear beat angle too big or utmost point ear and have taken place to turn over the condition of rolling over, and the air knife air current has the effect that the pole piece removed dust simultaneously in addition.

2) The utility model discloses an equal free direction regulation of wind sword mechanism among the device is pacified to utmost point ear and guiding mechanism, and the interval is also adjustable between guide plate and the driving roller, and through sensor control wind sword air current size, the utmost point ear that adapts to different situations is pacified.

3) The utility model discloses an in using electric core production process, avoid the pole piece to take place to turn over a book through utmost point ear behind the driving roller, utmost point ear when being applicable to the pole piece simultaneously and smooth and prevent turning over a book, all have the pole piece transmission of utmost point ear to the both sides and convolute the condition, also accessible suitable adjustment structure realizes that both sides utmost point ear smooths and prevents turning over a book.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is an axonometric view of the air knife tab flattening device of the present invention;

fig. 2 is a top view of the air knife tab flattening device of the present invention;

fig. 3 is a cross-sectional view corresponding to a top view of the air knife tab flattening device of the present invention;

description of the reference numerals

1. A driving roller; 2. pole pieces; 3. a tab; 4. an air knife mechanism; 5. a tab guiding mechanism; 6. a wind blade head; 7. a sensor; 8. locking a ring; 9. adjusting the bolt; 10. a guide piece.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-3, the utility model discloses an air knife utmost point ear smooths device includes: the device comprises a driving roller 1, an air knife mechanism 4 and a tab guide mechanism 5; wherein, a plurality of utmost point ears 3 are distributed to pole piece 2 edge, and pole piece 2 makes its direction of motion change through driving roller 1.

Specifically, in order to avoid the turnover of the pole piece 2, air knife mechanisms 4 are symmetrically arranged on the upper side and the lower side of the pole piece 2, an adjustable air knife head 6 is arranged at the front end of each air knife mechanism 4, and the direction of air flow blown out by the air knife heads 6 is adjustable; wherein, 4 levels of air knife mechanism set up in pole piece 2 top and below to be located and be close to 2 input ends of pole piece one end, the direction that air knife head 6 blew out the air current is towards utmost point ear 3 position, and air knife head 6 is used for blowing utmost point ear 3 from 2 inboard outsides of pole piece, realizes tentatively smoothing of turning over the utmost point ear 3 of rolling over, perk.

The mode of adding the guide piece through the air knife airflow realizes that the pole lug is smoothed, can adapt to the condition that the pole lug deflects and swings the angle too big or the pole lug has taken place to turn over and turn over, and the air knife airflow has the effect that the pole piece removed dust simultaneously.

As shown in fig. 1, the tab flattening device further comprises a tab guiding mechanism 5, and the air knife mechanism 4 is arranged on one horizontal side of the tab guiding mechanism 5; the guide piece 10 is arranged at the front end of the lug guide mechanism 5, the guide piece 10 is positioned above the driving roller 1, and the position of the guide piece 10 is opposite to the position of a moving route of the lug 3 on the pole piece 2 and is positioned right above the moving track of the lug 3; the guide plate 10 is matched with the driving roller 1 to perform secondary smoothing on the tab 3.

Wherein, the guide vane 10 has arc direction section and level and smoothes the section, and the arc direction section perk upwards plays the guide effect, and the level smoothes the section and is used for smootheing utmost point ear 3.

In addition, the guide piece 10 is connected to the tab guide mechanism 5 through an adjusting bolt 9, and the distance between the guide piece 10 and the pole piece 2 can be adjusted through the adjusting bolt 9; the direction of the guide piece 10 can be easily adjusted, a horizontal support rod and a locking ring 8 are further arranged on the lug guide mechanism 5, and the locking ring 8 is used for adjusting the horizontal inclination angle of the guide piece 10.

The other adjustable parts of the device are provided with locking structures, which are only taken as examples for illustration; the wind knife head 6 is also connected with the wind knife mechanism 4 through a locking ring 8 so as to adjust the blowing air flow direction of the wind knife head 6. The air knife mechanism and the guide mechanism in the flattening device can freely adjust the direction, and the distance between the guide sheet and the driving roller can also be adjusted.

The sensor 7 is arranged on the front side of the guide sheet 10, the sensor 7 is positioned on the front side of one end of an inlet of the guide sheet 10, and the sensor 7 and the air knife mechanism 4 are simultaneously in signal connection with a control part of the smoothing device and used for judging whether the deflection of the pole lugs is in a set range; the air flow of the air knife is controlled by the sensor, so that the electrode lug flattening device is suitable for flattening electrode lugs in different conditions. .

It should be noted that the utility model discloses an air knife mechanism and guiding mechanism among the utmost point ear pacifies device all belong to protection scope, including guide plate interval adjustment mechanism. The utility model discloses an utmost point ear when also can realizing that the pole piece convolutes is smoothed and bilateral utmost point ear pole piece's utmost point ear is smoothed to suitable adjustment structure.

The working principle and the working process of the air knife tab flattening device of the utility model are briefly described below with the attached drawings.

The working principle is as follows: the rolling pole piece passes through the driving rollers, the phenomenon of pole ear folding can be caused by the change of the moving direction of the pole piece, and the pole ear is drooping under the action of gravity, warped under the action of the pulling force between the adjacent driving rollers, deviated and swung caused by the uneven moving speed of the pole piece, the folding phenomenon of the pole ear and the like are caused; for the polar lug which is likely to be folded, firstly, through the air knives arranged on two sides of the pole piece, the powerful airflow blown out by the air knives can blow the non-serious polar lug to be folded, and the deflection of the polar lug caused by various external forces is reduced; and then the lug guided by the airflow of the air knife is contacted with the driving roller through the guide sheet, and the lug is restrained by the guide sheet at the moment, so that the lug is prevented from being folded.

The air knives arranged on the two surfaces of the pole piece are generally symmetrically arranged, the blowing direction of air flow of the air knives is adjustable, the air flow of the air knives needs to be aligned to a guide piece and a section of range in front of the center of the driving roller, and the pole lug is guaranteed to be kept in a relatively flat state before passing through the driving roller.

The pole lug guide sheet mechanism can adjust various angles and corresponds to the condition that pole pieces at different angles pass through the transmission roller; meanwhile, the distance between the guide plate and the pole piece can be adjusted, so that the electrode plate is suitable for smoothing different electrode lugs and reducing friction between the electrode lugs and the guide plate. A sensor is arranged in front of the lug guide plate mechanism, the distance range between the sensor and the lug is set, the air volume of the air knife is increased for the lug with a larger folding angle, and higher lug flattening rate is realized.

The working process is as follows: the moving direction of the pole piece 2 is changed; the utmost point ear 3 that accompanies the motion of pole piece 2 at first can be through symmetrical arrangement at the air knife mechanism 4 of pole piece 2 both sides, and air knife head 6 blows out powerful air current and blows flat not serious utmost point ear and turn over, reduce the beat that utmost point ear produced by various external forces, and air knife air current direction is like the figure arrow point, and its coverage extends to near driving roller 1, and the air knife can not only blow flat utmost point ear 3 and can also take away the dust on pole piece 2 surface.

And then the tab 3 guided by the air flow of the air knife passes through a tab guide mechanism 5, and a sensor 7 is arranged in front of the guide mechanism to judge whether the tab 3 has large deflection or not for controlling the size of the air flow blown out by the air knife head 6. The tab 3 which has been blown flat contacts the driving roller 1 through the guide strip 10, and a gap exists between the guide strip 10 and the driving roller 1, and can be adjusted through the adjusting bolt 9 (as shown in fig. 3). Through the tab 3 of the driving roller 1, enters the next driving roller comprising the same tab flattening device.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A smoothing device for a lug of an air knife is characterized by comprising a driving roller (1), an air knife mechanism (4) and a lug guide mechanism (5); the transmission roller (1) is used for driving the pole piece (2) to move;

the air knife mechanism (4) is horizontally arranged above the pole piece (2) and is positioned at one end close to the input end of the pole piece (2), an air knife head (6) is arranged on the air knife mechanism (4), the direction of air flow blown out by the air knife head (6) faces to the position of the pole lug (3), the air knife head (6) is used for blowing the pole lug (3) from the inner side to the outer side of the pole piece (2), and the primary flattening of the folded and tilted pole lug (3) is realized;

the lug guide mechanism (5) is provided with a guide sheet (10), the guide sheet (10) is positioned above the driving roller (1), and the position of the guide sheet (10) is opposite to the position of a moving route of a lug (3) on the pole piece (2); the guide piece (10) is matched with the driving roller (1) to perform secondary smoothing on the tab (3).

2. The air knife lug flattening device according to claim 1, characterized in that the number of the air knife mechanism (4) and the number of the air knife heads (6) are two, and the two air knife heads (6) are symmetrically arranged on the upper side and the lower side of the pole piece (2).

3. The air knife lug flattening device according to claim 1, characterized in that the air knife mechanism (4) is arranged on one horizontal side of the lug guide mechanism (5).

4. An air knife tab flattening device according to claim 1, characterized in that the guide plate (10) is connected to the tab guide mechanism (5) by an adjusting bolt (9), and the adjusting bolt (9) is used for adjusting the distance between the guide plate (10) and the pole piece (2).

5. An air knife tab flattening device according to claim 1, characterized in that the guide sheet (10) is located directly above the moving track of the tab (3).

6. The air knife lug flattening device according to claim 1, characterized in that the guide piece (10) is provided with an arc-shaped guide section and a horizontal flattening section, the arc-shaped guide section is tilted upwards to play a guiding role, and the horizontal flattening section is used for flattening the lug (3).

7. The air knife lug flattening device according to claim 1, characterized in that a sensor (7) is further arranged on the lug guide mechanism (5), and the sensor (7) is positioned on the front side of the inlet end of the guide sheet (10).

8. The air knife lug flattening device according to claim 1, characterized in that a horizontal support rod and a locking ring (8) are further arranged on the lug guide mechanism (5), and the locking ring (8) is used for adjusting the horizontal inclination angle of the guide sheet (10).

9. An air knife tab flattening device according to claim 8, characterized in that the air knife head (6) is connected with the air knife mechanism (4) through the locking ring (8) so as to adjust the blowing air flow direction of the air knife head (6).