Patent ID: 6139305
Filing Date: 2000-10-31
Classification: B29C

Abstract:
Apparatus for production of injection molded articles from at least two plastic melts, including a fixed mold mounting plate installed on a machine frame and a movable mold mounting plate carried by at least four essentially horizontal tie rods connected to the fixed mold mounting plate, an additional mold mounting device movable relative to the mold mounting plates and pivoted around an axis of rotation aligned perpendicular to the longitudinal axis of the tie rods, the additional mold mounting device carrying additional mold halves on at least two side surfaces aligned with a spacing from each other and parallel to the axis of rotation configured to cooperate with mold halves mounted on the mold mounting plates, wherein each of the mold mounting plates is provided with at least one opening that permits connection of a plasticizing and injection unit to the sprue channels in the mold halves mounted on the mold mounting plates, characterized in that the additional mold mounting device 8, 9, 18) comprises upper and lower support blocks (8, 9) spaced apart and relatively arranged in an essentially vertical plane with each support block being guided and carried by at least two tie rods (4, 5) arranged in an essentially horizontal plane, the support blocks each being provided with a bearing (21, 22) to receive essentially vertically aligned pivots (19, 20) of a prismatic mold core support (18), the mold core support (18) providing mounting surfaces for additional mold halves (28, 29), the additional mold mounting device further comprising at least two drive devices (14, 15, 16, 17), for changing the relative spacing between the mold mounting plates (3, 6) and the support blocks (8, 9) in the longitudinal direction of tie rods (4, 5), wherein the bearings (21, 22) and the pivots (19, 20) are constructed so that the mold core support (18) can be removed from the support blocks (8, 9) without removing the support blocks (8, 9) from the tie rods (4, 5).