Die clamping apparatus

Details Die clamping apparatus Die clamping apparatus

1988-06-08

1989-10-17

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

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

With means to close mold

425595, B29C 4566

Patent

active

048743097

ABSTRACT:
In a die clamping apparatus including a fixed die plate, a movable die plate, a device for moving the movable die plate relative to the fixed die plate, a device for fixedly coupling the fixed die plate with the movable die plate and tie bars for carrying out clamping of dies, the tie bars are fixedly secured to the fixed die plate and a hydraulic cylinder having a ram is provided on the movable die plate, or vice versa. The coupling device has a half-nut provided on the surface of the fixed die plate so as to be movable in the axial direction of the tie bar insert hole, and are provided on the outer circumference of the tip end of the tie bar and are adapted to mesh with the half-nut. A stopper is provided between the fixed die plate and the half-nut. A part of the ram is made to butt against the stopper to position the ram in the axial direction of the tie bar insert hole. The end surface of the half-nut opposed to the ram is brought into pressing contact with the ram. At that position, the half-nut can be positioned so as to mate with the threads on the tie bar.

REFERENCES:
patent: 2976569 (1961-03-01), Quere et al.
patent: 3346924 (1967-10-01), Lombard
patent: 3465387 (1969-09-01), Allard et al.
patent: 3756757 (1973-09-01), Grundmann
patent: 3801256 (1974-04-01), Farrell
"Fermeture Hydromecanique Originale Pour Machine d'Injection" by R. Bodini in Apr. 1977 issue of Plastiques Modernes et Elastomeres.

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