Poppet pin ejector
AssigneeThe National Machinery Company
InventorsThomas E. Hay, Jeffrey W. Carper
Life of this patent
Estimating the term…
Abstract
A tool for a progressive forming machine comprising an assembly having a workpiece shaping cavity symmetrical about an axis and including an end wall transverse to the axis, a conical bore open to the end wall and centered on the axis, the sides of the conical bore being described by a relatively small angle relative to the axis, and an ejector pin for forcing workpieces form the cavity, the ejector pin having an end face and a conical body portion rearward of the end face, the conical body portion having an external surface matching a surface of the conical bore.
Claims8
A tool for a progressive forming machine comprising an assembly having a workpiece shaping cavity symmetrical about an axis and including an end wall transverse to the axis, the end wall having a slope change in a zone symmetrical about the axis forming a centering and stabilizing pocket for a workpiece, a conical bore open to the end wall and centered on the axis, and an ejector pin for forcing workpieces from the cavity, the ejector pin having an end face and a conical body portion rearward of the end face, the conical body portion having an external surface matching a surface of the conical bore, a mouth of the bore and end face of the ejector pin being spaced radially inwardly from the pocket.
A tool for a progressive forming machine comprising an assembly having a workpiece shaping cavity symmetrical about an axis and including an end wall transverse to the axis, a conical bore open to the end wall and centered on the axis, the sides of the conical bore being described by an angle relative to the axis of less than 30 degrees, and an ejector pin for forcing workpieces form the cavity, the ejector pin having an end face and a conical body portion rearward of the end face, the conical body portion having an external surface matching a surface of the conical bore.
A tool for a progressive former comprising an assembly having a workpiece shaping cavity symmetrical about an axis and including an end wall transverse to the axis, a conical bore open to the end wall and centered on the axis, and an ejector pin for forcing workpieces from the cavity, the ejector pin having an end face and a conical body portion rearward of the end face, the conical body portion having an external surface matching a surface of the conical bore, a sliding ring concentric with the axis having an inside diameter larger than the end wall adapted to confine material of a workpiece while moving with the material towards the end wall.
A tool for a progressive former comprising an assembly having a workpiece shaping cavity symmetrical about an axis and including an end wall transverse to the axis, a conical bore open to the end wall and centered on the axis, and an ejector pin for forcing workpieces from the cavity, the ejector pin having an end face and a conical body portion rearward of the end face, the conical body portion having an external surface matching a surface of the conical bore, the end wall adjacent the conical bore having a slope from a plane perpendicular to the axis of less than 59 degrees.
Dependencies are inferred from the claim text.