Diecasting assembly

A multiple casting die assembly for use in a die casting process, comprising:

• (a) independent plural pairs of mating die members abuttingly arranged in series to meet at abutting planes along a predetermined clamping axis, the die members of each pair having walls defining mating casting cavity portions meeting at a parting plane, said abutting planes and parting planes being parallel to each other and normal to said clamping axis;
• (b) means defining a sprue channel for simultaneously communicating with each said cavity portions, said sprue channel extending through said pairs of die members and perpendicular to said parting planes;
• and
• (c) means for selectively clamping said members together in said series arrangement and along said axis and for forceably separating said pairs of die members to break the cast metal in said sprue at said abutting planes remote from said parting planes and to sequentially separate said die members within each pair at said parting planes, the separation means comprising opposed pull bars, each secured to a platen and having a shoulder at its outermost extremity, said shoulder of each pull bar engages one die member of the pair of die members opposite the platen to which the pull bar is secured, and a lock means to hold each of said pairs of die members together while the platens are moved apart, thus the pairs of die members are separated first along said abutting planes, upon reaching a predetermined distance between the platen and the opposite pair of die members the shoulder engages said one die member causing said one die member to remain at that position while separation along the parting plane occurs upon further separating movement of said platens.