Injection of plastic in molding machine

Details Injection of plastic in molding machine Injection of plastic in molding machine

1973-12-21

1976-02-24

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Dough divider type including trap chamber

Rotating trap chamber pickup

425245, 425247, B29F 102, B29F 106

Patent

active

039402231

ABSTRACT:
This invention reduces the time that a core rod must remain at an injection station of a plastic blow molding machine. The injection operation is usually performed by a plasticizer, and while the injection operation itself requires very little time, the plasticizer performs other roles that must be complete before the next injection. This invention uses two plasticizers alternately so that one can inject while the other recovers for its next injection operation. A plastic pump is used to relieve the plasticizers of some of the operations that they previously performed.

REFERENCES:
patent: 3158901 (1964-12-01), Westover
patent: 3281899 (1966-11-01), Dacco
patent: 3674401 (1972-07-01), Annis et al.
patent: 3697210 (1972-10-01), Johnson
patent: 3709644 (1973-01-01), Farrell
patent: 3733156 (1973-05-01), Garner
patent: 3819313 (1974-06-01), Josephsen et al.
patent: 3888612 (1975-06-01), Schrewe et al.
patent: 3891372 (1975-06-01), Takiura

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