High speed stock feeder for punch presses and the like
US4051987A · kind A · utility
Inventor
Key dates
| Filing date | Apr 22, 1976 |
| Grant date | Oct 4, 1977 |
| Priority date | — |
| Expiry date | Apr 22, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D43/11
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A high speed dual-slide type pneumatic feeder for intermittently advancing strip stock into the work station of a punch press or the like characterized by a novel asynchronous type fluid control system which includes a rotary control valve that is intermittently stepped to a plurality of predetermined operative angular positions by means of a ratchet mechanism that is adapted to be operated in response to the ram motion of the punch press. The feeder is also characterized by an improved, compact, flexible and more efficient structural arrangement, and by a novel stock grip releasing system and valving arrangement therefor that automatically causes the stock to be released immediately after completion of each feed stroke of the feeder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.