CN217797141U

CN217797141U - Inflatable film suspension roller

Info

Publication number: CN217797141U
Application number: CN202220089755.3U
Authority: CN
Inventors: 陈东华; 谢德超
Original assignee: Jiangsu Zhongguancun Jiatuo New Energy Equipment Co ltd
Current assignee: Jiangsu Jiatuo New Energy Intelligent Equipment Co ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-11-15
Anticipated expiration: 2032-01-13

Abstract

The utility model discloses an inflatable film suspension roller, which comprises a suspension roller and an inflatable film; the inflatable film is coated on the roller surface of the suspension roller; the inflatable film is tightly attached to the roller surface of the suspension roller. The utility model has the advantages of the substrate atress is even, and the coating fold problem reduces and the high current product that production efficiency does not possess.

Description

Inflatable film suspension roller

Technical Field

The utility model relates to a lithium cell processing trade, more specifically the utility model relates to an aerify film suspension roller.

Background

In the current lithium battery industry, coating is a critical process for lithium battery production. The quality of coating quality directly influences the quality and the service life of the lithium battery. However, in the coating process, one of the technical difficulties affecting the coating quality is the coating wrinkle problem, namely, a gap exists between the sizing agents on the whole pole piece, and the height difference exists between the position with the sizing agents and the position without the sizing agents, so that the pole piece and the suspension roller shake when moving relatively, thereby causing wrinkles. Particularly, after two surfaces of the double-layer high-speed coating machine are coated and before the double-layer high-speed coating machine enters the drying oven, the problem of wrinkling at the climbing position is the most common technical problem in the industry;

the most common method in the industry at present is to coat a rubber belt on a roller surface, which means that a rubber belt is attached to the roller surface corresponding to the gap of a pole piece, so that the requirement on the centering property of the pole piece is high, and once deviation and misalignment exist in the transmission process of the pole piece, the pole piece is wrinkled; the method for attaching the adhesive tape to the roller surface is only suitable for production scenes with pole pieces of specific widths and specific coating widths, and for producing pole pieces of various specifications and widths, the method is obviously not suitable for actual production scenes with diverse base material coating widths and blank widths, and has poor universality in the actual production process. In the later production of different products, the adhesive tape needs to be frequently replaced, the adhesive tape needs to be attached again, and the roller surface is easy to have adhesive residue, so that the roller surface is not cleaned completely, the product quality is influenced, and the production efficiency is not improved easily; the second method is a roller surface hoop, the principle is similar to that of a roller surface coated adhesive tape, the requirement on centering performance is high, the practical production scene of pole piece coating width diversity is not applicable to producing pole pieces with various specifications and widths, and the universality is poor; the third method is to use a large number of medium and high rollers, which are convenient to use and can ensure that the pole pieces are attached to the roller surface. But the centering performance is required to be very high, the width range of the pole piece and the coating thickness are limited, corresponding medium and high rollers are required to be replaced and used for different pole piece widths and coating thicknesses, and the universality is general; and the use cost of the medium and high roller is high, which is not beneficial to large-area production and popularization, and the later stage needs frequent level adjustment, which is not beneficial to the improvement of production efficiency.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an inflatable film suspension roller, which has the characteristics of simple installation, simple operation, strong adjustability and the like; the method is suitable for any production scenes of different pole piece widths, pole piece types, pole piece coating widths and pole piece coating thicknesses, and has strong universality; the suspension roller is simple in structure, the inflatable film is low in cost, good in effect and convenient to replace, the production cost is saved, the production efficiency is improved, and the suspension roller can be widely applied to the lithium battery industry.

The utility model provides a technical scheme that its technical problem adopted is:

an inflatable film suspension roller comprises a suspension roller and an inflatable film; the inflatable film is coated on the roller surface of the suspension roller; the inflatable film is tightly attached to the roller surface of the suspension roller.

In the structure, the interior of the suspension roller body is provided with a hollow structure; the roller surface of the suspension roller is provided with two axially symmetric air outlet holes for realizing that air enters the inflatable film from the air outlet holes.

In the above structure, the inflatable film is fixed and hermetically connected to both ends of the suspension roller.

In the above structure, one end of the suspension roller is provided as a stub end; the other end of the suspension roller is set to be a long shaft end.

In the above structure, an air inlet is provided on an end face of a short shaft end of the suspension roller; and a floating joint is arranged at the air inlet.

In the structure, the inside of the suspension roller body is provided with a communicating gas path to realize the communication between the gas inlet and the gas outlet.

In the structure, the thickness of the inflatable film is 0.05-0.1mm, and the length of the inflatable film is 300-2000mm.

The beneficial effects of the utility model are that: the utility model provides an aerify film suspension roller, the utility model discloses in be provided with the suspension roller, aerify the film and float and connect, realized that the substrate can paste tight roll surface at the coating process, make it obtain better exhibition flat, solved the problem of coating fold, can increase substantially production efficiency and coating quality and reduction in production cost in the use.

Drawings

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

FIG. 1 is an assembly schematic of the present invention;

fig. 2 is a schematic view of the assembly of the suspension roller and the pole piece of the present invention;

FIG. 3 is a cross-sectional view of the present invention (with the inflatable membrane in an uninflated state);

FIG. 4 is a cross-sectional view of the present invention (with the inflated film in an uninflated state);

FIG. 5 is a cross-sectional view of the present invention (with the inflatable membrane in an inflated state);

FIG. 6 is a cross-sectional view of the present invention (with the inflatable membrane in an inflated state);

FIG. 7 is a schematic view of the working preparation stage of the present invention, in which the pole pieces are disposed on the surface of the roller body and the inflatable film is in an uninflated state;

FIG. 8 is a partial schematic view of the levitation roller of the present invention in contact with the blank area of the pole piece (with the inflatable membrane in an uninflated state);

FIG. 9 is a partial schematic view of the levitation roller of the present invention in contact with the coated area of the pole piece (with the inflatable membrane in an uninflated state);

FIG. 10 is a schematic view of the inflatable film in an inflated state with the pole pieces on the surface of the roller body at the working stage of the present invention;

FIG. 11 is a partial schematic view of the suspension roller of the present invention in contact with the blank areas of the pole pieces (with the inflated film in an inflated state);

FIG. 12 is a partial schematic view of the levitation roller of the present invention in contact with the coating area of the pole piece (the inflatable membrane is inflated);

FIG. 13 illustrates a plurality of utility model combinations for coating the pole piece;

figure 14 is a sketch of a coating operation performed on a pole piece by a plurality of utility model combinations.

Detailed Description

The conception, specific structure, and technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings, so that the objects, features, and effects of the present invention can be fully understood. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection/connection relations referred to in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions.

As shown in fig. 1-2, an air-filled film levitation roller includes a levitation roller 02 and an air-filled film 01; the inflatable film 01 is coated on the roll surface of the suspension roll 02; the inflatable film 01 clings to the roll surface of the suspension roll 02.

The interior of the suspension roller 02 is of a hollow structure; the roller surface of the suspension roller 02 is provided with two axially symmetric air outlet holes 21 for allowing air to enter the inflatable film 01 from the air outlet holes 21, so that the inflatable film 01 is inflated.

And the two ends of the inflatable film 01 and the two ends of the suspension roller 02 are fixedly and hermetically connected.

One end of the suspension roller 02 is set to be a short shaft end 03; the other end of the suspension roller 02 is set as a long shaft end 04.

An air inlet 31 is formed in the end face of the short shaft end 03 of the suspension roller 02; a floating joint 32 is arranged at the air inlet 31.

And a communicating air passage is arranged inside the suspension roller 02 to realize the communication between the air inlet 31 and the air outlet 21.

The thickness of the inflatable film 01 is 0.05-0.1mm, and the length is 300-2000mm; the inflatable film 01 has the characteristics of ultrathin thickness, good elasticity, wear resistance and the like.

During the working process of the high-efficiency inflatable film suspension roller, firstly, a compressed air valve is opened, compressed air sequentially passes through a floating joint 32 and an air inlet 31, a gas path is communicated with the interior of a roller body of the suspension roller 02, and then the compressed air flows out from an air outlet 21 on the roller surface, so that an inflatable film 01 is inflated and enters a preparation working state. When the total width of the pole piece is 1000mm and the wrap angle with the roller surface of the suspension roller is 5 degrees, the lowest requirement of the elastic modulus of the inflatable film is 0.00229N/mm under the normal working state ² 。

As shown in fig. 3, 4, 7, 8 and 9, when the inflatable film 01 is in an uninflated state during the coating operation, the inflatable film 01 is tightly attached to the roll surface of the suspension roll 02 due to the self-tension; the dry surface of the pole piece 05 coated on one surface is contacted with the roller surface of the suspension roller 02; because the coating area 52 (with the thickness of 30-300 mu m) of the dry surface and the white space area 51 have the height difference of the coating thickness, the coating area 52 is directly contacted with the roller surface of the suspension roller 02, and the roller surface of the suspension roller 02 has a supporting function; and the blank area 51 is not in contact with the roller surface of the suspension roller 02, so that the blank area 51 is in a suspended state and has no supporting effect, and the wrinkles are serious. Therefore, the inflatable film 01 is equivalent to the pole piece coating condition before the optimization design in the uninflated state, and truly reflects a cause of the wrinkle phenomenon in the coating of the prior industry.

As shown in fig. 5, 6, 10, 11, and 12, when the inflatable film 01 is inflated during the coating operation, the inflatable film 01 is inflated due to its good elasticity. The dry surface of the pole piece 05 coated on one surface is directly contacted with the roller surface of the suspension roller 02, and due to the tension action, the coating area 52 of the pole piece 05 is also pressed against the surface of the suspension roller 02, but the white area 51 has the supporting action of the inflatable film 01 on the pole piece under the inflation state, so that the coated area and the uncoated area of the pole piece 05 are effectively supported; in addition, the suspension roller 02 only when contacting with the pole piece 05, inflate the film 01 and just can be compressed tightly by the pole piece because of the tension effect of pole piece 05, and the place that does not contact with the pole piece 05 is in the inflation state at all times, because the suspension roller 02 is in the rotation state always in the work, make to inflate the film 01 and be in the state of being compressed tightly and inflating inflation always, the pole piece 05 can obtain the effectual supporting role of inflation film 01 always to its difficult problem of fold has been solved.

The inflatable film suspension roller has the characteristics of simple installation, simple operation, strong adjustability and the like; as shown in fig. 13 and 14, a plurality of air-filled film suspension rollers are combined to realize the coating operation of the pole piece; the inflatable film suspension roller can be suitable for different pole piece widths, pole piece types, pole piece coating widths and pole piece coating thicknesses, can be suitable for any production scene, and is strong in universality; the suspension roller is simple in structure, the inflatable film is low in cost, good in effect, convenient to replace, capable of saving production cost, capable of improving production efficiency and capable of being widely used in the lithium battery industry.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.

Claims

1. An inflatable film suspension roller, characterized in that: comprises a suspension roller and an inflatable film; the inflatable film is coated on the roller surface of the suspension roller; the inflatable film is tightly attached to the roller surface of the suspension roller; the interior of the suspension roller body is provided with a hollow structure; the roller surface of the suspension roller is provided with two axially symmetric air outlet holes for realizing that air enters the inflatable film from the air outlet holes.

2. An air-filled film levitation roller as recited in claim 1, wherein: the inflatable film is fixedly and hermetically connected with the two ends of the suspension roller.

3. An air-filled film levitation roller as recited in claim 1, wherein: one end of the suspension roller is arranged to be a short shaft end; the other end of the suspension roller is set to be a long shaft end.

4. An air-filled film levitation roller as recited in claim 3, wherein: an air inlet is formed in the end face of the short shaft end of the suspension roller; and a floating joint is arranged at the air inlet.

5. An air-filled film levitation roller as recited in claim 1, wherein: and a communicating gas path is arranged in the suspension roller body to realize the communication between the gas inlet and the gas outlet.

6. An air-filled film levitation roller as recited in claim 1, wherein: the thickness of the inflatable film is 0.05-0.1mm, and the length of the inflatable film is 300-2000mm.