Patent ID: 7331375

Claim:
An apparatus for molding metal by conveying a chipped metallic material with a screw into a closed mold cavity defined by a mold through a hot runner located in the mold heated to a predetermined temperature, charging the heated metallic material in a semi-melted or liquidized state at a tip end of the hot runner, injecting such metallic material into the closed mold cavity, and cooling the material to mold a metallic mold product, wherein the apparatus comprises; mold-clamping and opening means for closing the mold to form the closed mold cavity and opening the mold; injection-pressure increasing means for injecting the metallic material into the closed mold cavity; gate-melting means located in the mold for directly heating the hot runner located in the mold to melt metallic material solidified at a tip end of a nozzle of the hot runner; mold-lubricating means for spraying lubricant onto a wall surface of the closed mold cavity; material-metering means for metering the metallic material by the displacement of the screw; and control means for controlling the operations of the above-mentioned means; and means for simultaneously activating the gate-melting means for heating the hot runner, the mold-lubricating means for spraying the lubricant and the material-metering means for metering the metallic material.