Sprue removal mechanism for die casting apparatus

Details Sprue removal mechanism for die casting apparatus Sprue removal mechanism for die casting apparatus

1976-07-06

1977-11-29

Shore, Ronald J.

Metal founding

With product severing or trimming means

164 70, B22D 3100

Patent

active

040601218

ABSTRACT:
In a die casting apparatus having a first die and a second die movable into closed engagement with the first die to define a mold cavity therebetween, a sprue removal mechanism includes a degater knife, a rocker arm mounted to pivot about a fixed axis and connected to the degater knife, a cam fixed to the second die, and a cam follower carried by the rocker arm. As the second die moves away from the first die, the cam follower travels along the cam to wing the rocker arm and drive the degater knife to an extended position between the open dies, thereby severing the sprue from a completed casting while the casting is supported by the first die.

REFERENCES:
patent: 937477 (1909-10-01), Shonberg
patent: 2821756 (1958-02-01), Pouell
patent: 2946102 (1960-07-01), Mills
patent: 2995788 (1961-08-01), Sunday
patent: 3191246 (1965-06-01), Pouell
patent: 3256572 (1966-06-01), Fisher
patent: 3672437 (1972-06-01), Bennett
patent: 3844337 (1974-10-01), Scott et al.

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