Metal founding – Means to shape metallic material – Pressure shaping means
Patent
1992-03-17
1993-09-14
Batten, Jr., J. Reed
Metal founding
Means to shape metallic material
Pressure shaping means
164337, B22D 1730
Patent
active
052440338
ABSTRACT:
A diecasting apparatus is mainly composed of: a mold unit having a movable mold and a stationary mold both of which have mold cavities in the meeting surfaces thereof and, also having an inlet formed at a lower portion of the mold unit and a vertical passage extending from the inlet upward to the mold cavity, and further having a sleeve connected to the inlet and thus communicating with the mold cavities through the inlet and the passage; and a supplying unit for supplying molten metal into the sleeve. A supplying passage is provided in the stationary mold, and has one of its openings at the inner surface of the inlet of the vertical passage, and communicates with the outside of the stationary mold. A duct connects the supplying passage and the supplying unit. A molten-metal heater is provided on the duct. A valve mechanism for opening and closing the supplying passage is composed of a valve seat and a valve. The valve seat is provided in the supplying passage, close to the inlet or the vertical passage, and is tapered so as to become wider toward the movable mold. The valve is supported by the movable mold and is moved to and away from the the valve seat by a driving unit.
REFERENCES:
patent: 3248759 (1966-05-01), Burkett
patent: 3254377 (1966-06-01), Morton
patent: 4753283 (1988-06-01), Nakano
patent: 4795126 (1989-01-01), Crandell
patent: 4989663 (1991-02-01), Kitamura
patent: 4991641 (1991-02-01), Kidd et al.
Batten, Jr. J. Reed
Ube Industries, Inc.
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