| 摘要 |
A stack mold (10) for injection molding having a pair of mold halves (11 and 12) movable toward and away from each other along an axis of movement and in which a plurality of mold plates (13) are arranged parallel to one another between the mold halves and parallel to the axis of movement of the mold halves. This arrangement of the mold plates (13) permits a mold area in excess of the platen area and enables a larger number of large thin parts to be simultaneously molded in a given size press than is possible in the prior art. Further, the mold plates (13) are formed with hangers (33) which support the mold plates (13) on the mold halves (11 and 12), enabling different mold plates (13) to be easily substituted without disassembling the mold structure and slides (27 and 28), and also eliminating the need for guide pins or pillars for the mold plates. The mold plates (13) are supported on program plates (22 and 23) having guide surfaces (24, 25 and 26) thereon for determining the opening and closing sequence of the mold plates (13) during opening and closing movement of the mold press, and the central portion of the endmost mold plates or slides (27 and 28) is wedge shaped. This structure also eliminates the need for guide pins or pillars for the mold plates (13). |
