# US 2025/0144698 A1 · Can manufacturing method and can manufacturing system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0144698 A1 - Document ID: US20250144698A1 - Status: Published application - Kind: A1 - Application number: 19/013,386 - Filed: 2025-01-08 - Published: 2025-05-08 - Earliest claimed: 2022-07-28 - Assignees: Toyo Seikan Co., Ltd. - Applicants: Toyo Seikan Co., Ltd. - Inventors: Kei OOHORI; Tatsuya OSAFUNE; Takanori NAKAGAWA - Web page: https://patentgrep.com/patent/US20250144698A1 ## CPC - B21D 22/28: of cylindrical articles using consecutive dies - B21D 51/2669: {Transforming the shape of formed can bodies; Forming can bodies from flattened tubular blanks; Flattening can bodies} - B21D 22/02: Stamping using rigid devices or tools - B21D 35/00: Combined processes according to {or processes combined with} methods covered by groups B21D1/00 - B21D31/00 (B21D21/00 takes precedence) - B21D 43/05: specially adapted for multi-stage presses {(B21D43/145 takes precedence)} - B21D 51/2646: {Of particular non cylindrical shape, e.g. conical, rectangular, polygonal, bulged} - Y02E 60/10: Energy storage using batteries - B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A can manufacturing method by deep drawing processing using a press machine, wherein a pre-step press machine, a post-step press machine, and a conveyor configured to convey a blank from the pre-step press machine to the post-step press machine are provided, the can manufacturing method including: first pressing for blank processing on a metal plate and coining processing to reduce a plate thickness of the blank by using the pre-step press machine; conveying the blank from the pre-step press machine to the post-step press machine; and second pressing for drawing processing and/or drawing and ironing processing to form a rectangular can by using the post-step press machine. ## Claims ### Claim 1 A can manufacturing method by deep drawing processing using a press machine, wherein a pre-step press machine, a post-step press machine, and a conveyor configured to convey a blank from the pre-step press machine to the post-step press machine are provided, the can manufacturing method including: first pressing for blank processing on a metal plate and coining processing to reduce a plate thickness of the blank by using the pre-step press machine; conveying the blank from the pre-step press machine to the post-step press machine; and second pressing for drawing processing and/or drawing and ironing processing to form a rectangular can by using the post-step press machine. ### Claim 2 (depends on 1) The can manufacturing method according to claim 1, wherein a stroke of the pre-step press machine is shorter than a stroke of the post-step press machine. ### Claim 3 (depends on 1) The can manufacturing method according to claim 1, wherein a pressing capacity of the pre-step press machine is higher than a pressing capacity of the post-step press machine. ### Claim 4 (depends on 1) The can manufacturing method according to claim 1, wherein the pre-step press machine comprises a finger configured to convey the blank formed by the blank processing, and the blank processing is performed prior to the coining processing in the first pressing, the first pressing including finger-conveying the blank formed by the blank processing in the pre-step press machine. ### Claim 5 (depends on 1) The can manufacturing method according to claim 1, wherein the post-step press machine comprises a finger configured to convey a formed product obtained by drawing processing and/or drawing and ironing processing on the blank, and the finger comprises a contact portion made of a resin material or a rubber material and is configured to grip and convey the formed product by the contact portion. ### Claim 6 (depends on 1) The can manufacturing method according to claim 1, wherein the can is an aluminum can. ### Claim 7 A can manufacturing system by deep drawing processing using a press machine, the can manufacturing system comprising: a pre-step press machine, a post-step press machine, and a conveyor configured to convey a blank from the pre-step press machine to the post-step press machine, wherein the pre-step press machine is configured to perform blank processing on a metal plate and coining processing to reduce a plate thickness of the blank, and the post-step press machine is configured to form a rectangular can by drawing processing and/or drawing and ironing processing. ### Claim 8 (depends on 7) The can manufacturing system according to claim 7, wherein a stroke of the pre-step press machine is shorter than a stroke of the post-step press machine. ### Claim 9 (depends on 7) The can manufacturing system according to claim 7, wherein a pressing capacity of the pre-step press machine is higher than a pressing capacity of the post-step press machine. ### Claim 10 (depends on 7) The can manufacturing system according to claim 7, wherein the pre-step press machine is configured to perform the blank processing prior to the coining processing, and comprises a finger configured to convey the blank formed by the blank processing in the pre-step press machine. ### Claim 11 (depends on 7) The can manufacturing system according to claim 7, wherein the post-step press machine comprises a finger configured to convey a formed product obtained by drawing processing and/or drawing and ironing processing on the blank, and a contact portion of the finger that contacts with the formed product is made of a resin material or a rubber material. ### Claim 12 (depends on 7) The can manufacturing system according to claim 7, wherein the can is an aluminum can.