Device for molding plastic material ferrule for optical fiber co

Details Device for molding plastic material ferrule for optical fiber co Device for molding plastic material ferrule for optical fiber co

1994-02-22

1995-08-08

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to evacuate mold or provide controlled environment

249141, 249144, 249151, 425468, 425577, 425812, B29C 4534, B29C 4536

Patent

active

054393701

ABSTRACT:
A device for molding plastics material ferrules for optical fiber connectors comprises a molding cavity defined by an accurately sized cylindrical bush defining the outside diameter of the ferrule. A cover closes the molding cavity. A peg joined to the cover extends axially into the molding cavity and is extended at its free end by an accurately sized needle defining the inside diameter of the ferrule. A backing member extending axially into the molding cavity from the opposite end as compared with the peg comprises a bore for guiding the needle adapted to receive the end thereof when the backing member moves towards the peg so as to render the needle and the bush concentric. A venting system allows gases to escape from the molding cavity to the exterior when plastics material is injected into the mold. The backing member is a substantially cylindrical body of revolution which fits directly into the bush with no clearance and minimal force.

REFERENCES:
patent: 4479910 (1984-10-01), Kurokawa et al.
patent: 4493632 (1985-01-01), Hori et al.
patent: 4711752 (1987-12-01), Deacon et al.
patent: 4941642 (1990-07-01), Stoll et al.
patent: 5269998 (1993-12-01), Takagi et al.

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