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US 6,139,305 AGranted
Apparatus for production of injection molded articles from at least two plastic melts
AssigneeFerromatik Milacron Maschinenbau GmbH
InventorWolfgang Nesch
Life of this patent
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AssigneeFerromatik Milacron Maschinenbau GmbH
InventorWolfgang Nesch
Estimating the term…
An injection molding apparatus capable of producing injection molded articles from at least two plastic melts, includes an additional mold mounting device between a fixed mold mounting plate and a movable mold mounting plate that is traversed along four essentially horizontal tie rods. The additional mold mounting device is also pivotable around a rotational axis aligned perpendicular to the longitudinal axis of the tie rods, and carries additional mold halves that cooperate with the mold halves mounted on the mold mounting plates on at least two side surfaces that are aligned with a spacing parallel to each other and relative to the rotational axis. The additional mold mounting device comprises upper and lower support blocks that are arranged at a spacing relative to each other in an essentially vertically aligned plane, with each support block being guided on at least of the two tie rods. A friction or pivot bearing is provided for vertically aligned pivots of a prismatic mold core support. The additional mold mounting device further includes at least two drive devices to change the relative spacing between the mold mounting plates and the support blocks.
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).
Apparatus for production of injections 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 injections 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 desired stop positions of the pivoting movements of mold core support (18) around its essentially vertically aligned rotational axis (19, 20) are controlled and fixed by at least one index element (43) attached to one of the support blocks (8, 9) to engage selectively the mold core support (18).
Dependencies are inferred from the claim text.