CN216705314U

CN216705314U - Pole piece dust removal mechanism

Info

Publication number: CN216705314U
Application number: CN202123326392.5U
Authority: CN
Inventors: 曹海霞; 毛德智
Original assignee: Zhuhai Higrand Technology Co Ltd
Current assignee: Zhuhai Higrand Technology Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-06-10
Anticipated expiration: 2031-12-27

Abstract

A pole piece dust removal mechanism comprises a box body, wherein a first panel of the box body is provided with a hollow part for a pole piece to penetrate through; the air knife installation shaft is arranged in the box body; the air knife is arranged on the air knife mounting shaft and is provided with an air outlet and a compressed air inlet communicated with an external compressed air source; the pole piece roller is arranged in the box body, the pole piece roller and the air knife are arranged oppositely, the air outlet outputs airflow along the tangential direction of the pole piece roller, and the airflow direction and the moving direction of the pole piece are opposite; the negative pressure dust collection box is connected with the box body, and an opening of the negative pressure dust collection box is opposite to the air outlet; and the space below the pole piece passing roller in the box body is divided into two spaces by the partition board. According to the utility model, through improving the structures of the air outlet and the interior of the box body, the flow field distribution in the box body is optimized, the trend of dust is controlled, the dust is prevented from flying out of the box body along with the pole pieces, and secondary pollution of the dust is reduced.

Description

Pole piece dust removal mechanism

Technical Field

The utility model belongs to the technical field of lithium battery manufacturing equipment, and particularly relates to a pole piece dust removing mechanism for removing dust on the surface of a pole piece.

Background

In order to ensure the quality of the battery, the pole piece needs to be dedusted before being wound, and the risk of short circuit of the battery is reduced by removing dust on the surface of the pole piece. At present, two common pole piece dust removal modes are adopted, one mode is brush and negative pressure dust removal, and the other mode is air knife and negative pressure dust removal. The dust removal mode of the brush and the negative pressure is that the dust on the surface of the pole piece is removed by the brush, and then the dust brushed by the brush is sucked away by the negative pressure dust collection system. This kind of dust removal mode is unfavorable for controlling the yields because the brush can contact the pole piece surface, probably causes the pole piece damage. The dust removal mode of air knife + negative pressure is that the air knife links to each other with compressed air source to blow to the pole piece surface through the air knife, blow away the dust on pole piece surface, then the dust that negative pressure dust collecting system will blow down is inhaled away. The dust removal mode can not contact with the surface of the pole piece, the pole piece can be prevented from being damaged, but the flow field in the existing dust removal mechanism with the air knife and the negative pressure is unreasonable to control, secondary pollution is easy to generate, and an improved space exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pole piece dust removal mechanism which can reduce secondary dust pollution and has a good dust removal effect.

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

a pole piece dust removal mechanism, comprising: the pole piece fixing device comprises a box body, wherein a first panel of the box body is provided with a hollow part for the pole piece to penetrate through; an air knife mounting shaft arranged in the box body; the air knife is arranged on the air knife mounting shaft and is provided with an air outlet and a compressed air inlet communicated with an external compressed air source; the pole piece roller is arranged in the box body, the pole piece roller and the air knife are arranged oppositely, the air outlet outputs airflow along the tangential direction of the pole piece roller, and the airflow direction and the moving direction of the pole piece are opposite; the negative pressure dust collection box is connected with the box body, and an opening of the negative pressure dust collection box is opposite to the air outlet; and the space below the pole piece passing roller in the box body is divided into two spaces by the partition board.

According to the technical scheme, the air outlet of the air knife is set to output high-pressure air to the pole piece along the tangential direction of the pole piece passing roller, the air flow direction is opposite to the moving direction of the pole piece, so that dust can be stripped from the surface of the pole piece when the air knife blows, the partition plate is arranged below the pole piece passing roller and separates the space below the pole piece passing roller in the box body, the flow field distribution in the box body is optimized through the arrangement of the air outlet direction and the arrangement of the partition plate, the trend of the dust is controlled, the dust is prevented from flying to the outside of the box body along with the pole piece, and secondary pollution of the dust is reduced.

Further, the partition board is connected with the negative pressure dust suction box.

Furthermore, the air knife installation axle can set up in the box body around self axis rotation ground, the one end of air knife installation axle is provided with air-out angle adjust knob, unscrews rotatable behind the air-out angle adjust knob the air knife installation axle, screws up can fix behind the air-out angle adjust knob the air knife installation axle.

The air blowing direction of the air knife arranged as the air outlet is adjustable, so that the direction of compressed air blowing to the pole piece is conveniently adjusted, and the dust removal effect is ensured.

Furthermore, the pole piece roller-passing device further comprises a mounting bottom plate, the box body is movably arranged on the mounting bottom plate, and the moving direction of the box body is perpendicular to the axis of the pole piece roller-passing device.

Furthermore, a horizontally extending guide slide rail is arranged on the mounting base plate, a slide block is arranged on the guide slide rail, the box body is connected with the slide block, and a translation driving unit for driving the box body to move is arranged on the mounting base plate.

Furthermore, the sliding block and the box body are connected into a whole or are arranged separately from the box body.

Furthermore, the translation driving unit is an air cylinder, and a piston rod of the air cylinder is connected with the box body.

Furthermore, a movement limiting part used for buffering and limiting the movement of the box body is arranged on the mounting bottom plate.

Set up the box body as portable, can improve the convenience that the pole piece was worn to take, solve the pole piece tape transport problem of operation difficulty that current dust removal mechanism exists.

Further, the air outlet extends along the length direction of the air knife.

Further, the air knife, the pole piece roller and the partition plate are sequentially arranged from top to bottom.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic view of a pole piece dust removing mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a pole piece dust removing mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a pole piece dust removing mechanism according to an embodiment of the present invention with a top plate and a back plate removed;

FIG. 4 is a schematic structural view of the pole piece dust removing mechanism at another angle according to the embodiment of the present invention;

FIG. 5 is a schematic view of the pole piece dust removing mechanism of the embodiment of the present invention after the box is removed;

FIG. 6 is a schematic view of the direction of the pole piece and the air outlet direction of the air knife according to the embodiment of the present invention.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Detailed Description

The utility model will be described in detail below with reference to the accompanying drawings, wherein for the purpose of illustrating embodiments of the utility model, the drawings showing the structure of the device are not to scale but are partly enlarged, and the schematic drawings are only examples, and should not be construed as limiting the scope of the utility model. It is to be noted, however, that the drawings are designed in a simplified form and are not to scale, but rather are to be construed in an attempt to more clearly and concisely illustrate embodiments of the present invention. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; the terms "front," "back," "bottom," "upper," "lower," and the like refer to an orientation or positional relationship that is based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the pole piece dust removing mechanism of the present embodiment includes a box body 1, an air knife 2 and a pole piece roller 3 which are arranged inside the box body 1, and a negative pressure dust collecting box 4 arranged at the bottom of the box body 1. The box body 1 consists of a top plate 1-1, a first panel 1-2, a second panel 1-3 and two side plates 1-4, wherein the first panel 1-2 is provided with a hollow part 1-2a for the pole piece to pass through, and a relatively closed space is formed inside the box body 1, so that secondary pollution can be prevented. One of the side panels 1-4 of the case 1 is removed in fig. 1 for ease of illustration of the internal structure.

As a preferred embodiment of the present invention, the case 1 is provided on the mounting base 5 so as to be movable in the horizontal direction. The box body 1 and the mounting bottom plate 5 are mounted together in a sliding connection mode of a guide rail and a sliding block, a horizontally extending guide sliding rail 5-1 is arranged on the mounting bottom plate 5, the sliding block 5-2 capable of moving along the guide sliding rail 5-1 is arranged on the guide sliding rail 5-1, and the box body 1 is connected with the sliding block 5-2 so as to move along the guide sliding rail 5-1 along with the sliding block 5-2. The mounting bottom plate 5 is provided with a translation driving unit 5-3 for driving the box body 5-1 (the sliding block 5-2) to move, the translation driving unit 5-3 can push the whole box body 1 (the pole piece dust removing mechanism) to be close to or far away from the roller outside the box body 1, and when the box body 1 is far away from the roller outside the box body, the pole pieces can be conveniently threaded. The translation driving unit 5-3 of this embodiment adopts the cylinder, and the piston rod of cylinder is directly or indirectly connected with box body 1 to the cylinder can drive the removal of box body 1. Preferably, the mounting base plate 5 is provided with a movement restricting portion 5a for buffering and restricting movement of the cartridge 1.

As shown in fig. 3, an air knife mounting shaft 5 extending along the length direction of the box body 1 is arranged in the box body 1, and two ends of the air knife mounting shaft 5 are arranged on the side plates 1-4 of the box body 1 through bearings. The air knife 2 is arranged on the air knife mounting shaft 5. The pole piece roller 3 is positioned below the air knife 2. The air knife 2 is provided with an air outlet (not shown) extending in the longitudinal direction of the air knife 2, and the air knife 2 is further provided with a compressed air inlet 2a communicating with an external compressed air source (not shown). After the compressed air is connected into the air knife 2, high-pressure airflow is output outwards from the air outlet, and the air is blown downwards along the tangential direction of the pole piece passing roller 3. The negative pressure dust suction box 4 is arranged at the bottom of the box body 1, the upper part of the negative pressure dust suction box is opened, and the air outlet of the air knife 2 is opposite to the air outlet of the air knife 2, so that dust blown down by the air knife 2 is sucked into the negative pressure dust suction box 4, the negative pressure dust suction box 4 is communicated with an external negative pressure source, and the dust is sucked and collected under negative pressure. The negative pressure dust suction box 4 may be funnel-shaped with a large top and a small bottom. As a preferred embodiment of the present invention, the air knife mounting shaft 5 and the box body 1 are movably mounted, the air knife mounting shaft 5 can rotate around its own axis, an air outlet angle adjusting knob 6 is arranged at one end of the air knife mounting shaft 5, the air outlet angle adjusting knob 6 is unscrewed, then the air knife mounting shaft 5 is rotated, and after the angle (the air flow direction of the air knife) is adjusted, the air outlet angle adjusting knob 6 is screwed, that is, the air knife 2 is fixed.

The below that the roller 3 was crossed to the pole piece is provided with a baffle 7, and the baffle 7 falls into two spaces with the space of the interior pole piece of box body 1 below the roller 3, from this when air knife 2 bloies downwards, sweeps the dust on the surface of pole piece 100 and peels off, and the dust is separated by baffle 7, can not follow pole piece 100 and remove, is taken out of box body 1 by pole piece 100 outside, and baffle 7 also helps optimizing the flow field distribution in the box body 1 in addition, prevents dust secondary pollution. The partition 7 of the present embodiment is connected to the negative pressure suction box 4. The air knife 2, the pole piece roller 3 and the partition plate 7 of the embodiment are sequentially arranged in the box body 1 from top to bottom, so that a smooth air path can be formed in the box body 1, and dust blown by the air knife 2 can be smoothly collected in the negative pressure dust collection box 4.

The following describes the operation process of the pole piece dust removing structure of the present invention with reference to fig. 1, 5 and 6:

the pole piece passes through the hollow part 1-2a on the first panel 1-2, winds on the pole piece roller 3 in the box body 1, then penetrates out of the hollow part 1-2a, and winds on a roller (not numbered) outside the box body 1, and in order to improve the dust removal effect and efficiency, two oppositely-arranged pole piece dust removal mechanisms can be arranged, so that the two side surfaces of the pole piece 100 can be subjected to dust removal;

when the pole piece 100 moves through the pole piece roller 3 in the box body 1, the air knife 2 outputs high-pressure airflow from the air outlet to the pole piece 100, and the moving direction of the pole piece 100 is opposite to the airflow direction, so that the air knife 2 blows downwards along the tangential direction of the pole piece roller 3 in the moving process of the pole piece 100, and dust is stripped from the surface of the pole piece 100 and moves downwards along the airflow direction;

the negative pressure dust collection box 4 starts negative pressure dust collection, collects dust blown down by the air knife 2 together, and discharges the dust through a negative pressure dust collection interface, and a partition plate 7 is arranged between the negative pressure dust collection box 4 and the pole piece roller 3 to separate a dust area from other areas, so that secondary dust pollution is avoided;

when the pole piece 100 passes through the two pole piece dust removing mechanisms, the dust removal of the front and back surfaces of the pole piece is completed.

Of course, the technical concept of the present invention is not limited to the above embodiments, and many different specific schemes can be obtained according to the concept of the present invention, for example, the driving unit for controlling the movement of the component can adopt a motor, an air cylinder, an electric push rod, and other common driving components, and when the driving unit adopts a motor, besides a screw transmission structure, other conventional transmission structures such as a chain can also be adopted for transmission; when the sliding component and the mounting bottom plate are in sliding connection by adopting a guide rail and sliding block structure, the sliding block can be integrated with the box body or can be two mutually independent components with the box body; such modifications and equivalents are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a pole piece dust removal mechanism which characterized in that includes:

the pole piece fixing device comprises a box body, wherein a first panel of the box body is provided with a hollow part for the pole piece to penetrate through;

an air knife mounting shaft arranged in the box body;

the air knife is arranged on the air knife mounting shaft and is provided with an air outlet and a compressed air inlet communicated with an external compressed air source;

the pole piece passing roller is arranged in the box body, the pole piece passing roller and the air knife are arranged oppositely, the air outlet outputs airflow along the tangential direction of the pole piece passing roller, and the airflow direction and the pole piece moving direction are opposite;

the negative pressure dust collection box is connected with the box body, and an opening of the negative pressure dust collection box is opposite to the air outlet;

and the space below the pole piece passing roller in the box body is divided into two spaces by the partition board.

2. The pole piece dust removal mechanism of claim 1, wherein: the baffle is connected with the negative pressure dust suction box.

3. The pole piece dust removal mechanism of claim 1, wherein: the air knife installation shaft can be rotationally arranged in the box body around the axis of the air knife installation shaft, an air outlet angle adjusting knob is arranged at one end of the air knife installation shaft, the air knife installation shaft can be rotated after the air outlet angle adjusting knob is loosened, and the air knife installation shaft can be fixed after the air outlet angle adjusting knob is tightened.

4. The pole piece dust removal mechanism of claim 1, wherein: the pole piece roller-passing device is characterized by further comprising a mounting bottom plate, the box body is movably arranged on the mounting bottom plate, and the moving direction of the box body is perpendicular to the axis of the pole piece roller-passing device.

5. The pole piece dust removal mechanism of claim 4, wherein: the mounting base plate is provided with a horizontally extending guide slide rail, a slide block is arranged on the guide slide rail, the box body is connected with the slide block, and a translation driving unit for driving the box body to move is arranged on the mounting base plate.

6. The pole piece dust removal mechanism of claim 5, wherein: the sliding block and the box body are connected into a whole or are arranged separately from the box body.

7. The pole piece dust removal mechanism of claim 5, wherein: the translation driving unit is a cylinder, and a piston rod of the cylinder is connected with the box body.

8. The pole piece dust removal mechanism of claim 5, wherein: the mounting bottom plate is provided with a movement limiting part used for buffering and limiting the movement of the box body.

9. The pole piece dust removal mechanism of claim 1, wherein: the air outlet extends along the length direction of the air knife.

10. The pole piece dust removal mechanism of claim 1, wherein: the air knife, the pole piece roller and the partition plate are sequentially arranged from top to bottom.