# US 2014/0151239 A1 · Anodizing apparatus and anodizing method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0151239 A1 - Document ID: US20140151239A1 - Status: Published application - Kind: A1 - Application number: 14/094,948 - Filed: 2013-12-03 - Published: 2014-06-05 - Earliest claimed: 2012-12-05 - Assignees: Aisin Seiki Kabushiki Kaisha - Applicants: Aisin Seiki Kabushiki Kaisha - Inventors: Daishi KOBAYASHI; Megumi HIROSE; Masaki KATO - Web page: https://patentgrep.com/patent/US20140151239A1 ## CPC - C25D 11/005: {Apparatus specially adapted for electrolytic conversion coating (apparatus in general for electrolytic coating C25D17/00)} - C25D 17/06: Suspending or supporting devices for articles to be coated - C25D 21/10: Agitating of electrolytes; Moving of racks - C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR ## Abstract An anodizing apparatus configured to perform an anodization on a metallic material to be processed provided with a projecting portion on a surface thereof, includes: an electrolysis tank configured to store electrolytic solution for anodization; a first electrode portion formed of a metal and electrically connected to the material in an immersed state immersed in the electrolytic solution in the electrolysis tank; a second electrode portion formed of a metal and opposing the material in the immersed state; an electrode apparatus configured to apply a predetermined voltage between the first and second electrode portions; a retaining device configured to retain and rotate the material in the immersed state; and a first injection device configured to inject the electrolytic solution toward a predetermined area deviated from the material in a storage space in the electrolysis tank so that the material is deviated from a line in the direction of injection. ## Claims ### Claim 1 An anodizing apparatus configured to perform an anodization on a metallic material to be processed provided with a projecting portion on a surface thereof, comprising: an electrolysis tank configured to store electrolytic solution for anodization; a first electrode portion formed of a metal and electrically connected to the material to be processed in an immersed state immersed in the electrolytic solution in the electrolysis tank; a second electrode portion formed of a metal and opposing the material to be processed in the immersed state; an electrode apparatus configured to apply a predetermined voltage between the first electrode portion and the second electrode portion; a retaining device configured to retain and rotate the material to be processed in the immersed state; and a first injection device configured to inject the electrolytic solution for the anodization toward a predetermined area deviated from the material to be processed in a storage space in the electrolysis tank so that the material to be processed is deviated from a line in the direction of injection. ### Claim 2 (depends on 1) The anodizing apparatus according to claim 1, wherein the predetermined area is a side area on the radially outside of an outer peripheral surface of rotation defined when the material to be processed rotates, and the first injection device injects the electrolytic solution toward the side area only in one direction along the outer peripheral surface of rotation of the material to be processed. ### Claim 3 (depends on 2) The anodizing apparatus according to claim 2, wherein the first injection device includes an injection port configured to inject the electrolytic solution in a bottom surface of the cylindrical electrolysis tank on the side of an inner wall surface of the electrolysis tank with respect to an intermediate position between the inner wall surface of the electrolysis tank and the outer peripheral surface of rotation of the material to be processed in terms of the radial direction of the material to be processed. ### Claim 4 (depends on 2) The anodizing apparatus according to claim 2, wherein the first injection device includes an injection port configured to inject the electrolytic solution in a bottom surface of the cylindrical electrolysis tank at a position apart from the outer peripheral surface of rotation of the material to be processed by ¼ or more of the outer diameter of the material to be processed on the side of an inner wall surface of the electrolysis tank in terms of the radial direction of the material to be processed. ### Claim 5 (depends on 1) The anodizing apparatus according to claim 1, wherein the predetermined area is an upper area between a liquid surface of the electrolytic solution in the electrolysis tank and an upper surface of the material to be processed in the immersed state, and the first injection device injects the electrolytic solution toward the upper area only in a direction along the upper surface of the material to be processed. ### Claim 6 (depends on 5) The anodizing apparatus according to claim 5, wherein the first injection device injects the electrolytic solution toward a center axis of rotation of the material to be processed in the upper area. ### Claim 7 (depends on 5) The anodizing apparatus according to claim 5, wherein the first injection device injects the electrolytic solution toward an area closer to the upper surface of the material to be processed than to the liquid surface of the electrolytic solution in the electrolysis tank. ### Claim 8 (depends on 5) The anodizing apparatus according to claim 5, further comprising: a second injection device configured to inject the electrolytic solution for the anodization toward a lower area between the bottom surface of the electrolysis tank and the lower surface of the material to be processed in the immersed state. ### Claim 9 (depends on 6) The anodizing apparatus according to claim 6, further comprising: a second injection device configured to inject the electrolytic solution for the anodization toward a lower area between the bottom surface of the electrolysis tank and the lower surface of the material to be processed in the immersed state. ### Claim 10 (depends on 7) The anodizing apparatus according to claim 7, further comprising: a second injection device configured to inject the electrolytic solution for the anodization toward a lower area between the bottom surface of the electrolysis tank and the lower surface of the material to be processed in the immersed state. ### Claim 11 (depends on 5) The anodizing apparatus according to claim 5, further comprising: a third injection device configured to inject the electrolytic solution for the anodization toward the projecting portion on the material to be processed in the immersed state. ### Claim 12 (depends on 6) The anodizing apparatus according to claim 6, further comprising: a third injection device configured to inject the electrolytic solution for the anodization toward the projecting portion on the material to be processed in the immersed state. ### Claim 13 (depends on 7) The anodizing apparatus according to claim 7, further comprising: a third injection device configured to inject the electrolytic solution for the anodization toward the projecting portion on the material to be processed in the immersed state. ### Claim 14 (depends on 8) The anodizing apparatus according to claim 8, further comprising: a third injection device configured to inject the electrolytic solution for the anodization toward the projecting portion on the material to be processed in the immersed state. ### Claim 15 An anodizing method for performing anodization on a metallic material to be processed provided with a projecting portion on a surface thereof, comprising: a step of immersing the material to be processed in an electrolysis tank in which electrolytic solution for the anodization is stored and rotating the material to be processed, and applying a predetermined voltage between a first electrode portion electrically connected to the material to be processed in an immersed state and a second electrode portion provided at a position opposing the material to be processed in the immersed state in the electrolysis tank, wherein the step further includes injecting the electrolytic solution for the anodization toward a predetermined area deviated from the material to be processed in a storage space in the electrolysis tank so that the material to be processed is deviated from a line in the direction of injection. ### Claim 16 (depends on 15) The anodizing method according to claim 15, wherein the predetermined area is a side area on the radially outside of an outer peripheral surface of rotation defined when the material to be processed rotates, and the step includes injecting the electrolytic solution toward the side area only in one direction along the outer peripheral surface of rotation of the material to be processed. ### Claim 17 (depends on 15) The anodizing method according to claim 15, wherein the predetermined area is an upper area between a liquid surface of the electrolytic solution in the electrolysis tank and an upper surface of the material to be processed in the immersed state, and the step includes injecting the electrolytic solution toward the upper area only in a direction along the upper surface of the material to be processed.