Process and apparatus for press forming
US5417097A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1993 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Sep 15, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D35/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process of press-forming a strip fed in its longitudinal direction to continuously produce press-formed articles with arbitrary lengths through forming stages including a draw-forming stage, the process comprising the steps of: a first step of continuously forming a semi-finished product having a middle portion formed over a length corresponding to that of a final product and an unformed leading end connected to an unformed following end of a neighboring antecedent semi-finished product, while feeding a strip in the direction of the strip length at a selected pitch; a second step of simultaneously draw-forming the unformed leading end of the semi-finished product and the unformed following end of the neighboring antecedent semi-finished product to a selected shape, the ends being connected to the respective semi-finished products; and a third step of separating scrap from peripheries of the leading end of the semi-finished product and the following end of the neighboring antecedent semi-finished product. An apparatus for carrying out the process is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.