Precision article molding methods and apparatus

Details Precision article molding methods and apparatus Precision article molding methods and apparatus

2005-04-05

2005-04-05

Heitbrink, Jill L. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Positioning of a mold part to form a cavity or controlling...

C425S150000, C425S577000

Reexamination Certificate

active

06875384

ABSTRACT:
An improved molding apparatus and method includes an adjustable mold component and a fixed mold component for molding precision articles; a bias force mechanism for applying a bias force to the adjustable mold component; and an adjustable mold component fine position adjustment mechanism operable exteriorly of the mold for applying a position adjustment force to the adjustable mold component to overcome the bias force and thereby adjust position of the adjustable mold component relative to a fixed mold component to reduce positional offset in a range of ±ten microns, or less, in at least one adjustment dimension. In one aspect, a plurality of bias force mechanisms and adjustment mechanisms provide positional adjustment in a plurality of adjustment dimensions. In another aspect, a feedback control loop responsive to optically sensed positional error automatically reduces positional offset.

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