Injection molding method, injection molding machine, injection m

Details Injection molding method, injection molding machine, injection m Injection molding method, injection molding machine, injection m

1992-05-19

1994-12-13

Vargot, Mathieu

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264245, 2643287, 2643288, 2643289, B29C 4516, B29C 4504

Patent

active

053727703

ABSTRACT:
The present invention provides an injection molding die unit having a simple construction and an injection molding method employing the injection molding die unit and capable of molding a composite molding in a short cycle time. After molding a first molding (70), a male die (30) is moved together with the first molding (70) by a distance (Gb) in direction (L) and, at the same time, a movable female die (14B) of a composite female die (14) is moved by the same distance (Gb) in the same direction (L) by a coil spring (29) to form a space (72) between the male die (30) and the composite female die (14) consisting of the movable female die (14B) and a fixed female die (14A), and a second molding material is injected into the space (72) to form second molding (80).

REFERENCES:
patent: 4004868 (1977-01-01), Ohdate
patent: 4726758 (1988-02-01), Sekine et al.
patent: 4840760 (1989-06-01), Oishi
patent: 5084223 (1992-01-01), Morita et al.
patent: 5094602 (1992-03-01), Morita
patent: 5125816 (1992-06-01), Morita
patent: 5186955 (1993-02-01), Morita et al.
patent: 5192481 (1993-03-01), Morita

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