Title:
SQUARE CAN MANUFACTURING METHOD AND SQUARE CAN MANUFACTURING DEVICE
Document Type and Number:
Japanese Patent JP2023149446
Kind Code:
A
Abstract:
To provide a square can manufacturing method and a square can manufacturing device that can improve form accuracy of a square can while suppressing increase in manufacturing burden.SOLUTION: A square can manufacturing method includes a form correction process in which a form of an intermediate molded product 60D is corrected. In the form correction process, each planned long side wall part is pushed toward a short side direction outer side by a form correction punch 52 inserted in the intermediate molded product 60D thereby increasing a short side direction interval between the planned long side wall parts, and a planned bottom wall part is pinched between the form correction punch 52 and a bottom wall pressing component 53 located on an outside surface side of the planned bottom wall part thereby flattening the planned bottom wall part.SELECTED DRAWING: Figure 3
Inventors:
TSUKADA KAZUHIKO
OHORI KEI
NAGAFUNE TATSUYA
OGAWA YOSUKE
NAKAGAWA TAKANORI
ONUKI RYUJI
HANADA RYOSUKE
OHORI KEI
NAGAFUNE TATSUYA
OGAWA YOSUKE
NAKAGAWA TAKANORI
ONUKI RYUJI
HANADA RYOSUKE
Application Number:
JP2022058022A
Publication Date:
October 13, 2023
Filing Date:
March 31, 2022
Export Citation:
Assignee:
TOYO SEIKAN KAISHA LTD
International Classes:
B21D22/30; B21D24/00
Attorney, Agent or Firm:
Nobuo Fujimoto