Cleaning apparatus and cleaning method for press rolls for electrodes

Patent metadata

Field	Value
Publication number	US-11577281-B2
Application number	US-202017252544-A
Country	US
Kind code	B2
Filing date	Jan 30, 2020
Priority date	Jan 30, 2019
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

The present invention relates to an apparatus for cleaning press rolls for electrodes, comprising two or more cleaning units provided with cleaning members having grains. According to the present invention, the apparatus for cleaning press rolls for electrodes comprises a plurality of, i.e., two or more, cleaning units, wherein the cleaning units respectively comprise cleaning members having grains with different directions, thus allowing a residual cleaning solution and contaminants to be effectively removed. In addition, when press rolls are cleaned using the apparatus for cleaning press rolls according to the present invention, an aqueous cleaning solution and an alcoholic cleaning solution, which have different properties, can be used together, and after cleaning, the cleaning solutions do not remain on the press rolls, and thus subsequently, secondary contamination of electrodes is prevented, and accordingly, when electrodes are manufactured, the occurrence of defects in the electrodes can be reduced.

First claim

The invention claimed is:

1. An apparatus for cleaning an electrode rolling roll by removing contaminants attached on the electrode rolling roll, the apparatus comprising:
a first cleaning part configured to bring the rolling roll into contact with a first cleaning member to thereby clean the rolling roll; and
a second cleaning part configured to clean the rolling roll by bringing the rolling roll cleaned by the first cleaning part into contact with a second cleaning member to thereby clean the rolling roll,
wherein the first cleaning member has a first grain defined by a first direction and the second cleaning member has a second grain defined by a second direction,
wherein each grain has only a single direction, and
wherein the first direction is different from the second direction,
wherein the first and second directions of the grains respectively formed on the first and second cleaning members, intersect each other with an angle of 60 to 120 degrees.

2. The apparatus of claim 1 , wherein the first cleaning part and the second cleaning part each comprises:
a supply roll configured to supply the first or the second cleaning member, respectively;
a cleaning unit configured to bring the first or the second cleaning member, respectively, into contact with the rolling roll to thereby clean a surface of the rolling roll;
a cleaning liquid spray unit configured to spray cleaning liquid onto the first or the second cleaning member, respectively; and
a winding roll configured to recover the first or the second cleaning member, respectively, having cleaned the surface of the rolling roll.

3. The apparatus of claim 1 , wherein the first and the second cleaning member each comprise non-woven fabric.

4. The apparatus of claim 1 , wherein a direction of the first grain formed on the first cleaning member or the second grain formed on the second cleaning member is formed to have an angle of 0 to 90 degrees with respect to a moving direction of the cleaning member during cleaning.

5. The apparatus of claim 1 , wherein a direction of the first grain formed on the first cleaning member or the second grain formed on the second cleaning member is formed to have an angle of 30 to 60 degrees with respect to a moving direction of the cleaning member during cleaning.

6. The apparatus of claim 1 , wherein the first and second directions of the grains respectively formed on the first and second cleaning members intersect each other with an angle of 80 to 100 degrees.

7. The apparatus of claim 1 , wherein the electrode rolling roll cleaning apparatus further includes a scraping pad adapted to scrape off foreign materials attached to a surface of the rolling roll.

8. The apparatus of claim 1 , wherein the electrode rolling roll cleaning apparatus
further includes an air spray unit adapted to spray air to a surface of the rolling roll.

9. The apparatus of claim 1 , wherein the electrode rolling roll cleaning apparatus further includes a heating unit configured to dry the rolling roll by applying heat to a surface of the rolling roll.

10. The apparatus of claim 2 , wherein the cleaning liquid of the first and/or second cleaning part contains one or more selected from the group consisting of water and alcohol-based compounds.

11. The apparatus of claim 2 , wherein the cleaning liquid of the first cleaning part is a cleaning liquid containing water, and
wherein the cleaning liquid of the second cleaning part is a cleaning liquid containing an alcohol-based compound.

Assignees

• Lg Chemical Ltd
• Lg Energy Solution Ltd

Inventors

• Yang Seung Gi
• Park Kun Ha
• Lee Ung Ju

Classifications

• B08B1/34

  rotating about an axis parallel to the surface · CPC title

• B08B1/165

  Scrapers · CPC title

• B08B1/143

  Wipes · CPC title

• H01M4/0435 Primary

  Rolling or calendering · CPC title

• B08B2240/00

  Type of materials or objects being cleaned · CPC title