Workpiece ejector system for presses
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Feb 1, 1983
Grant Date -
N/A
app pub date -
Feb 9, 1981
filing date -
Feb 9, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved workpiece ejecting system for presses includes an ejector piston hydraulically driven in response to reciprocation of the press slide in a manner whereby the motion of displacement of the ejector piston corresponds to the motion of displacement of the press slide during the stroke thereof, and the extent of displacement and velocity of the ejector piston are proportional to the corresponding characteristics of the slide. Ejector piston displacement is achieved by the flow of hydraulic fluid to and from the ejector piston chamber during reciprocation of the press slide through its total stroke. Ejector pins of various lengths are selectively associated with the press tooling and ejector piston to provide for varying the length of the workpiece ejecting stroke. Displacement of the ejector piston in the ejecting direction can be stopped prior to the slide reaching the end of its return stroke to provide a dwell in ejector pin displacement to facilitate workpiece feeding and removal with respect to the press tooling.
First Claim
Other Claims data not available