Pneumatic feeder for punch presses and the like
US4195761A · kind A · utility
Inventor
Key dates
| Filing date | May 30, 1978 |
| Grant date | Apr 1, 1980 |
| Priority date | — |
| Expiry date | May 30, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D43/11
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A dual slide pneumatic feeder for intermittently advancing stock into the work station of a punch press or the like wherein the fluid motors of the feeder are controlled by a fluid valve means that is adapted to be intermittently driven by a ratchet mechanism. The ratchet mechanism is adapted to be actuated from two different control points; first from a trigger means that is operable in response to the movement of the press ram, and secondly from a means operable in response to the completion of a feed stroke of one or both of the two feed slides. In this control environment the two feed slides may be made to execute a plurality of consecutive feed strokes in response to each cycle of operation of said press.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.