Patent ID: 6478562
Filing Date: 2002-11-12
Classification: B29C

Abstract:
A resin molding machine including molding dies having parting faces, which are covered with release film when a work piece is molded, one of said molding dies comprising:a cavity being formed in the parting face; a movable clamping section for clamping parts of the release film, which enclose the work piece except a resin path; a resin sending mechanism including a pot, which is formed in the parting face and communicated to said cavity, and a plunger, which is movably provided in the pot and sends resin from said pot to said cavity when said movable clamping section clamps the release film; and a movable cavity block constituting a part of said cavity, said movable cavity block being moved in said cavity so as to reduce capacity of said cavity, wherein: an excess of said resin is overflowed from said cavity when said movable cavity block is moved to reduce the capacity of said cavity, the excess of said resin being returned to said pot so as to push said plunger backward, and an overflow cavity is formed in said movable clamping section, and a part of the excess of said resin is returned to said pot and a remainder of the excess of said resin is introduced into said overflow cavity.