Method and apparatus for ejecting sheet metal parts from a press

Details Method and apparatus for ejecting sheet metal parts from a press Method and apparatus for ejecting sheet metal parts from a press

1997-05-23

1999-05-11

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

With stripping or ejecting from tool

72348, B21D45/04

Patent

active

059015985

ABSTRACT:
A method for ejecting sheet metal parts from a press, the press comprising a stationary core die portion and a movable punching die portion driven during a working stroke towards and during a return stroke away from the core die portion by driving means, a drawing member encircling the movable punching die portion, a circular or annular portion of said movable punching die portion being biased by spring means, ejection means associated with the press between the dead center of the strokes, the ejection being adapted to move a part laterally out of the travel path of the movable punching die portion by a laterally directed force. The method comprises the steps of punching and molding the parts by the cooperation of the movable punching die portion and the core die portion during a working stroke. A part is taken along with the movable punching die portion during the return stroke by a vacuum between the punching die portion and the part. The vacuum is built-up at the latest at the beginning of the return stroke. The vacuum is reduced after a given length of the return stroke such that the vacuum still exerts a suction force on the part at a position of the travel path where the ejection means is located, however, is safely overcome by the force of the ejection means.

REFERENCES:
patent: 4571978 (1986-02-01), Taube et al.
patent: 4574608 (1986-03-01), Bulso, Jr. et al.

Affiliated with

Also associated with

Rating

Method and apparatus for ejecting sheet metal parts from a press does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for ejecting sheet metal parts from a press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for ejecting sheet metal parts from a press will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-239418