Patent ID: 8490676

Claim:
A multi-cavity mold in which a molten metal is filled from a sleeve for a plurality of products, the multi-cavity mold comprising: a plurality of preformed cavities being arranged in a shape of a sector form on a concentric circle when viewed in an axial direction of the sleeve; a plurality of runners being connected to each of the cavities to supply the molten metal simultaneously to each of the cavities, wherein the runners are arranged separate from each other and extend radially from a sleeve stamp portion, and an end of each of the runners is arranged to directly face the sleeve stamp portion; a gate sleeve being connected to an end of the sleeve; and a flow divider being engaged with an inside of the gate sleeve while leaving a clearance around a periphery thereof, wherein the clearance between the periphery of the flow divider and the gate sleeve is divided in a circumferential direction of the flow divider so as to form the plurality of runners, wherein the runners are provided in an upper half region of the clearance formed between the periphery of the flow divider and the gate sleeve while a groove shaped reservoir is provided only in a lower half region of the clearance such that a semi-solidified layer formed within the sleeve is stored in the reservoir, the gate sleeve comprises a concave portion and the flow divider comprises a base and a projection portion, the projection portion of the flow divider being engaged with the concave portion of the gate sleeve, the projection portion of the flow divider having a plurality of depressed grooves in an upper half region of the projection portion and an only single depressed groove in a lower half region of the projection portion, the plurality of depressed grooves in the upper half region of the projection portion forming the plurality of runners that are separated from each other by a seal wall formed by the inner circumference of the concave portion of the gate sleeve and the projection portion of the flow divider and the single depressed groove in the lower half region of the projection portion forming the groove shaped reservoir that is separated from the plurality of runners by a seal wall formed by the inner circumference of the concave portion of the gate sleeve and the projection portion of the flow divider when the projection portion of the flow divider is engaged with the concave portion of the gate sleeve, the groove shaped reservoir being formed between the projection portion of the flow divider and the inner circumference of the concave portion of the gate sleeve, and the surface of the projection portion of the flow divider is in contact with the surface of the concave portion of the gate sleeve to separate the plurality of runners and the reservoir from each other, wherein each of the plurality of the cavities has a Y-shaped rib, one leg of the Y-shaped rib extending parallel to the direction of extension of the runner radially from the sleeve stamp portion.