Method for producing a rolled edge
US7392683B2 · kind B2 · utility
4Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2002 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Jun 24, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D19/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for the production of a rolled edge from an edge section (11) of a tube, wherein a flanging die is driven onto the edge section and flanges it into a roll. According to the invention, an initial area (14) of the edge section (11) is previously rolled in a positive fit manner by means of a forcibly controlled tool (30). This prevents buckling of the initial area (14), which has a controlled geometry as a result of rolling. The novel method is preferably used in the production of valve seats in so-called aerosol domes (10) for spray cans.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.