Die assembly for die casting a propeller structure

A die assembly for molding a propeller structure, comprising die means defining a cavity having a propeller configuration including a central hub and a plurality of blades extending from said hub, said die assembly including a base plate, a stripper plate disposed parallel to said base plate, first drive means for moving said stripper plate toward and away from said base plate, a generally cylindrical core projecting from said base plate and extending through a passageway in said stripper plate, a plurality of die sections carried by said stripper plate, guide means on said stripper plate for mounting the die sections for generally radial movement from an open position to a closed position where said die sections form an outer closed die spaced from the core to provide said die cavity therebetween, second drive means for moving said die sections from the open to the closed positions, upper die means to engage the upper ends of said die sections when in the closed position, and means for feeding a material to said die cavity to mold said propeller structure.

A die assembly for molding a propeller structure for a marine engine, said propeller structure including a central hub and a plurality of blades extending outwardly from said hub, said die assembly comprising a base, a generally cylindrical core projecting upwardly from said base, a plurality of die sections, each die section including a cavity defining a blade and a portion of the hub of the pattern, guide means for mounting said die sections for generally lateral movement relative to the axis of said core from an open position where said die sections are spaced apart to a closed position where the side edges of said die sections are in engaged relation and said die sections form a die cavity with said core, means for feeding a material to said die cavity to mold a propeller structure, and means for rotating the core and the structure when the die sections are in the open position to thereby index said blades into registry with the spaces between the open die sections.

A die assembly for molding a propeller structure, comprising die means defining a cavity having a propeller configuration including a central hub and a plurality of blades extending outwardly from said hub, said die assembly comprising a base, a lower core section extending upwardly from said base, a plurality of die sections, guide means for mounting the die sections for generally radial movement with respect to the axis of the core section from an open position where said die sections are spaced apart to a closed position where said die sections are spaced radially of said core to provide said die cavity therebetween, drive means for moving said die sections between the open and closed positions, an upper die unit having locking means to engage the upper ends of said die sections when in the closed position, an upper core section carried by said upper die unit and engageable with said lower core section when said upper die unit is engaged with the upper ends of said die sections, and means for feeding a molten material to the die cavity to mold a propeller structure.