Pressing mechanism for casting apparatus

摘要

A pressing mechanism for a casting apparatus comprises: a mold including a cavity for solidifying molten metal therein and a biscuit portion and a runner portion for introducing the molten metal therethrough into the cavity; a unit for supplying molten metal into the cavity, the unit having a sleeve to store molten metal and capable of communicating to the runner and a plunger tip in the sleeve, the plunger tip being capble of protruding from the sleeve so that the molten metal is fed into the mold after the sleeve is communicated to the biscuit portion, the tip being capable of protruding into the biscuit portion; a feeding rod disposed in the mold for freely protruding into the runner; and a unit for reciprocating the feeding rod. The tip approaches to a ceiling surface of the biscuit to a range of 0.5 to 5 mm. The tip may have a projection at its top face.