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US 4,416,604 AGranted
Universal molding system and method
AssigneeAssociated Enterprises, Inc.
InventorsErnest S. Bender, Marty C. Ignasiak, Michael H. Jones
Life of this patent
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AssigneeAssociated Enterprises, Inc.
InventorsErnest S. Bender, Marty C. Ignasiak, Michael H. Jones
Estimating the term…
A universal injection molding system has plural pairs of mold inserts that are engageable for mold cavities mounted on mold bases, respectively, on the relatively movable top clamp plate and base support plate of an injection molding machine. Rails on those bases hold the mold inserts in place in paired alignment. With the plates and bases closed to bring together respective mold insert pairs, the mold inserts are securely clamped in relatively fixed positions on the plates and bases. A multiple stage ejecting/stripping apparatus also is provided to strip parts from mold cavities, and a technique is provided to eject the sprue before the parts. Methods of facilitating set-up of an injection molding system and of injection molding also are disclosed.
An injection molding system, comprising plural mold inserts, mold base means for supporting at least one mold insert thereon, rail means for holding at least one mold insert on said mold base means, and holding means for holding said at least one mold insert to said rail means to prevent lateral movement of said mold insert relative to said mold base means and from movement out of the plane of such mold base means while permitting sliding of said mold insert along said rail means.
An injection molding system, comprising at least one pair of mold insert means engageable for injection molding a part, plural relatively movable mold base means for supporting mold insert means, runner distrubution means on at least one of said mold base means for distributing molding material to mold insert means, said runner distribution means including a main runner channel, plural individual runner channel means for distributing molding material to plural respective mold insert means from said main runner channel, and valve means for controlling flow of molding material from said main runner channel to respective individual runner channel means.
An injection molding system, comprising at least one pair of mold insert means engageable to form a mold cavity for molding a part therein, one mold insert means having molding material delivery passage means for delivering molding material into said mold cavity, the other mold insert means having a flow path means for conducting molding material to said delivery passage means, relatively movable support means for supporting said mold insert means for movement toward and away from each other to establish said mold cavity for molding and to open said mold cavity for discharging such part, and runner distribution means for distributing molding material to said mold insert means, including runner channel means for conducting molding material to said flow path means.
A mold insert for an injection molding system, comprising a mold body, a mold cavity defining insert means in said body for defining at least part of a mold cavity for molding a part therein, and self-contained stripper means in said mold body and movable with respect to said mold cavity for stripping a molded part therefrom.
Dependencies are inferred from the claim text.