Sheet punching device featuring selectively usable punch trains
US6672504B1 · kind B1 · utility
7Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2000 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Nov 28, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9447
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A sheet punching device cuts holes in a sheet while punches are entering die holes. The sheet punching device includes, a plurality of punch trains, each of which includes a plurality of the punches axially aligned on a rotating shaft and projecting in a radial direction of the. The plurality of punch trains is disposed in a rotation direction of the rotating shaft relative to one another, and the die holes are disposed in correspondence with the plurality of punches. One of the plurality of punch trains is selectively used in cutting holes in the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.