Patent ID: 6032502
Filing Date: 2000-03-07
Classification: B21D

Abstract:
A die assembly for necking an open end of a container wall comprising:a housing having upper and lower ends,a die mounted on the lower end of the housing and having a central axis and an inside surface,a spindle rotatably mounted in the housing, the spindle having upper and lower ends and a central axis which is aligned with the axis of the die,a mounting member attached to the lower end of the spindle for rotation therewith,a roller housing pivotally mounted on the mounting member for pivoting movement about an axis which extends parallel to the axis of the spindle,a roller rotatably supported by the roller housing adjacent the inside surface of the die, the roller being rotatable about an axis which extends parallel to the axis of the spindle,an actuator for pivoting the roller housing away from the axis of the spindle whereby the roller is moved toward the inside surface of the die, anda stop for limiting pivoting movement of the roller housing toward the die whereby a constant gap is maintained between the roller and the inside surface of the die.