Method for producing a rolled edge
US11498105B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2018 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Nov 26, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D51/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for producing a rolled edge from a cylindrical edge portion (11) of a pipe. In the method, a starting zone (14) of the edge portion (11) is rolled by a forcibly controlled tool (30). A flanging die (21) then advances into the rolled edge portion (11) and flanges the rolled edge portion into a roll (12). The method according to the invention is characterized in that the starting zone (14) of the edge portion (11) is folded over by the tool (30), which comprises a folding die (37) and counterholder (34), at an angle (α) in the range from 75-105° from the axial direction (45) into a substantially radially peripheral flange (41). The invention further relates to elements, in particular in the forme of an aerosol dome, having such rolled edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.