Method of configuring open end of can body
US5228321A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1992 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Jun 23, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D51/2615
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A necked-in and flange portion is formed in the open end of a seamless can body by using a can end holder driven for rotation about its axis, an axially movable inner roll of a reduced diameter disposed adjacent the can end holder, and a spinning roll positioned axially stationary outside the can body. While the can body with the open end telescoped onto the can end holder and in contact with the inner roll is rotated together with the can end holder, the spinning roll is advanced toward the can end holder and forced into the open end, and simultaneously the can body is moved in an axial direction away from the can end holder together with the inner roll, to form the necked-in and flange portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.