Deep-drawing device
US8424356B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2008 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Nov 5, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D37/16
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A deep drawing apparatus is provided in which a sheet material is subjected to optimal heating and cooling, whereby the limiting draw ratio is increased and a product can be worked more deeply, and uniformity of the sheet thickness of the product can be controlled. This apparatus includes: a punch 2 for subjecting a sheet material 9 to deep drawing; a die 3, used along with the punch, for forming the sheet material and subject the same to deep drawing; an anti-wrinkling component 4 for preventing wrinkling around the periphery of the forming portion in the sheet material; an induction heating coil 5 for directly heating the sheet material at a portion supported by the anti-wrinkling component; a heating controller 6 for controlling the amount of heating of the sheet material by the induction heating coil; and cooling means 21 to 23 for cooling the sheet material at the portion formed by the punch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.