Prefeeder assembly

摘要

An improved prefeeder assembly (10) for receiving a stack (28) of blanks and for inverting and passing the inverted blanks to processing equipment, the prefeeder assembly (10) having a rotator frame (12) which is positonable in an upright load entry position and an inverted bundle discharge position. A rotator infeed conveyor (70) is supported by the rotator frame (12) to receive and support a stack while a lift platform assembly (44) is also supported by the rotator frame (12) to clamp the stack (28) onto the rotator conveyor (70). A backstop and pusher assembly (14) is also supported on the rotator frame (12) and includes a moveable backstop (90) and a pusher member (24) for discharging a selective height of the stack.