Patent ID: 6702098
Filing Date: 2004-03-09
Classification: B21D,B23Q

Abstract:
A device (1) to feed work pieces in steps comprising two gripping rails (3) that can be moved back and forth in a feed direction, said gripping rails having gripping parts or gripping zones with which to grasp the work pieces, said gripping rails, in order to grasp the work pieces and move them in the feed direction, are able to be moved and then returned to a starting position, wherein there are at least two levers (4) attached to each of the gripping rails (3) at a distance from one another that tilt parallel or in a mirror-image fashion with respect to one another in a plane of motion of the gripping rails or in a plane parallel there to, and wherein the levers (4) of one of the gripping rails (3) tilt in an opposite direction to those of the other of the gripping rails (3), said levers being coupled to the respective rails via a longitudinal guide (7) that extends in a direction of orientation of the gripping rails (3), wherein to produce the feed and return motion, at least one feed traverse (8) directly or indirectly attaches to the gripping rails (3) outside of the gripping zones, said traverse feed moving in a direction perpendicular to a longitudinal orientation thereof, at least one driven tilt arm (9) is connected to the feed traverse (8) having a tilting motion that can be converted into a feed motion of the feed traverse (8) perpendicular to the orientation thereof and thus into the feed motion and return motion, respectively, of the gripping rails (3), wherein a point of attachment of the tilt arm (9) slides within a longitudinal guide (10) extending in the direction of orientation of the feed traverse (8), a servomotor (11) is provided as a drive unit for the tilting motion of the tilt arm (9), and means are provided to guide the feed motion of the feed traverse (8) perpendicular or parallel to itself.