Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With product ejector
Patent
1992-01-31
1993-10-12
Bushey, Scott
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With product ejector
425444, B29C 4540
Patent
active
052520579
ABSTRACT:
An apparatus for ejecting a molding from an injection molding machine includes a linearly moveable ejector plate. The ejector plate has a reciprocatingly movable coupling device for connecting the ejector plate to a mold ejector plate in a form-locked and force-locked manner. The ejector plate also has a hydraulic cylinder having a movable coupling piston connected to a coupling rod. This coupling rod has a head end which is insertable into the coupling sleeve of the mold ejector plate. The coupling rod is tubular within which an axially displaceable actuating rod is provided, while the actuating rod has a conically tapered front end. By displacement of the actuating rod relative to the coupling rod, the radially engaging head region of the coupling rod is widened by radially outwardly directed forces. Thus, in a coupled condition, the head ends of the coupling rod and the actuating rod are connected in form-locked and force-locked manner with the coupling sleeve so that all coupling play is prevented. Additionally, the tubular coupling rod is radially divisible and is provided with an annular chamber in the radially divisible region. An annular piston which is axially movable in the annular chamber is also provided on the actuating rod.
REFERENCES:
patent: 3591898 (1971-07-01), Stenmo
patent: 3844703 (1974-10-01), Hutter
patent: 4731014 (1988-03-01), Von Holdt
patent: 4832307 (1989-05-01), Watanabe et al.
Bushey Scott
Mannesmann Aktiengesellschaft
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