Mechanism for making openings in plastic parts within a mold tool
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United States of America Patent
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-
Mar 7, 2006
Grant Date -
Oct 24, 2002
app pub date -
Apr 5, 2002
filing date -
Apr 5, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An assembly disposed within a mold for forming openings in a plastic part includes a punch pin and a backing pin having faces disposed flush with a surface of a mold cavity. The backing pin is disposed opposite the punch pin. The punch pin is driven into the completed plastic part removing material to form an opening. The waste material is driven into a bore housing the backing pin. The backing pin recedes into the bore to accept the waste material. Upon ejection of the plastic part the waste material ejects from the mold cavity as the backing pin moves back to a position flush with the surface of the mold cavity.
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