Apparatus for ejecting threaded injection molded parts
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 29, 2001
Grant Date -
N/A
app pub date -
Feb 26, 1999
filing date -
Feb 26, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for ejecting threaded injection molded articles from a mold core by simultaneous application of rotational and translational force. The apparatus has a stripper ring which is rotatable about and movable along its axis. A driver rotates a stripper ring rotator in response to input from a machine ejector rod. Input from the machine ejector rod is transferred to the driver by a helically splined spindle which is axially movable relative to the driver and which engages a corresponding helically splined bore in the stripper ring rotator. Rotation of the stripper ring rotator is transferred to the stripper ring by meshing pinions. The stripper ring rotator also has a gear which meshes with corresponding teeth in a transversely extending rack to cause movement of the rack. Cams are secured to the rack and act against cam followers connected to the stripper ring to translate transverse movement of the rack into axial movement of the stripper ring.
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