Metallspritzgiessvorrichtung mit geheizter Zuleitung und geteilter Form

A diecasting apparatus is mainly composed of: a mold unit having a movable mold (16) and a stationary mold (14) both of which have mold cavities (22) in the meeting surfaces thereof and, also having an inlet (18) formed at a lower portion of the mold unit and a vertical passage (20) extending from the inlet (18) upward to the mold cavity (22), and further having a sleeve (24) connected to the inlet (18) and thus communicating with the mold cavity (22) through the inlet (18) and the passage (20); and a supplying unit (46) for supplying molten metal into the sleeve (24). A supplying passage (30) is provided in the stationary mold (14), and has one of its openings at the inner surface of the inlet (18) of the vertical passage (20), and communicates with the outside of the stationary mold (14). A duct (44) connects the supplying passage (30) and the supplying unit (46). A molten-metal heater (70) is provided on the duct (44). A valve mechanism (32) for opening and closing the supplying passage (30) is composed of a valve seat (34) and a valve (38). The valve seat (34) is provided in the supplying passage (30), close to the inlet (18) or the vertical passage (20), and is tapered so as to become wider toward the movable mold (16). The valve (38) is supported by the movable mold (16) and is moved to and away from the the valve seat (34) by a driving unit (40,42).