Can body forming device
AssigneeToyo Seikan Co., Ltd.
InventorKazuhiro Shinbata
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Abstract
In reforming a can bottom part, the defect of black discoloration in an associated formed portion is suppressed. A forming device for a can body, in which a cylindrical barrel part and a can bottom part are integrally formed, includes a tool used for the can body having a concave dome part in a center of the can bottom part and having an annular leg part on a periphery of the dome part to reform a shape of the leg part. The tool includes a pressing body that is inserted into the can body, and that abuts on an inner surface of the dome part, and a forming die that forms a curved end part heading inward on a lower end part of the leg part.
Claims4
A can body forming device for forming a can body in which a cylindrical barrel part and a can bottom part are integrally formed, the can body forming device comprising:
- a tool used for the can body having a concave dome part in a center of the can bottom part and having an annular leg part formed on a periphery of the dome part to reform a shape of the leg part,
- wherein the tool includes:
- a pressing body that is inserted into the can body, and that abuts on an inner surface of the dome part;
- and a forming die that forms a curved end part heading inward on a lower end part of the leg part, and
- wherein an air jetting part for causing the can bottom part to abut on an abutting surface of the pressing body is provided in a center part of the forming die.
Dependencies are inferred from the claim text.