Insert molding method and metal mold
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 30, 2004
Grant Date -
Dec 5, 2002
app pub date -
Nov 28, 2001
filing date -
Dec 14, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for injection molding of resin or rubber at an insert positioned in a lower mold injects and fills melted resin or rubber into a cavity of an upper mold through a gate. The lower metal mold has a flexible supporting member supporting the mold insert. The supporting member is vertically movable in a recess formed on the upper surface of the lower mold. The underside thereof is supported by the tip ends of shafts of pressing members that operate independently. The movable supporting member is moved while being pressed by the respective shafts of the pressing members to the upper mold at a plurality of positions. The resin or rubber is molded when the upper surface of the insert uniformly contacts the underside of the upper mold by bending of the movable supporting member.
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