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An apparatus and method for gravity molding articles such as battery straps or the like in open or non-pressurized molds. The apparatus uses an upwardly inclined molding head including a molten metal reservoir and a nozzle discharge end positioned adjacent the mold for delivering molten metal into t

An apparatus and method for gravity molding articles such as battery straps or the like in open or non-pressurized molds. The apparatus uses an upwardly inclined molding head including a molten metal reservoir and a nozzle discharge end positioned adjacent the mold for delivering molten metal into the mold. Delivery of molten metal can be from a molten lead vat through a siphon conduit and stop-cock valve at the mold head. At the end of each pour, upon closing of the stop-cock valve, a small amount of molten metal is withdrawn from the heated reservoir into a suction system to decrease the level of the reservoir slightly below the lower lip of the nozzle end and thereby prevent dripping from the nozzle end between pours. At the beginning of each pour, the molten metal is released from the suction system back into the reservoir for use in the pour.

대표청구항 ▼

An apparatus for delivering molten metal to a mold cavity which comprises a molten metal delivery head including an upwardly inclined molten metal reservoir terminating in a nozzle mouth with a lower lip for pouring molten metal from the reservoir into the mold cavity, means for supplying molten met

An apparatus for delivering molten metal to a mold cavity which comprises a molten metal delivery head including an upwardly inclined molten metal reservoir terminating in a nozzle mouth with a lower lip for pouring molten metal from the reservoir into the mold cavity, means for supplying molten metal to said reservoir, valve means movable between open and closed positions for controlling delivery of molten metal into said reservoir and through said nozzle providing intermittent delivery from the nozzle for intermittent pours into the mold cavity and suction means including a fluid tap extending below the nozzle lower lip and into direct fluid communication with said reservoir and containing a fluid for direct surface contact with molten metal in the reservoir for withdrawing molten metal from the reservoir by said suction means communicating with said tap to apply suction upon said fluid in said tap at the end of each pour so as to prevent dripping of molten metal from the end of the nozzle between pours.