Plastic injection molding machine with mold exceeding fifteen tonnes in weight, includes detachable clamps facilitating mold change-over

摘要

Each mold half is associated with an adapter plate (10, 12). This is fastened in turn, to the respective mold clamping platen. Detachable clamps (56, 56') are fitted between the cavity mold (20) and the adapter plate (12) which carries it, and between the core plate (18) and the adapter plate (10) which carries it. They are fitted to the core (if used). The detachable clamps form connectors between the respective components. Couplings are included for connecting lines, the injection nozzle and the hot channel. Detachable connections are provided for drives actuating slides and/or ejectors. The arrangement of all connectors is such that, after releasing clamps, contour elements (i.e. mold and/or core) can be withdrawn from the adapter plates, hot channel and if appropriate, the core plate. The mold components (20, 22) fitted to at least one of the adaptor plates, can then be slid on guides (44, 46) in the direction of opening and closure. Through connections to their drive units, the adapter plates are brought sufficiently far apart to allow them to be lifted up from the guides, to permit mold exchange. Further mechanical details of the arrangement are described in accordance with the foregoing principles. An independent claim IS INCLUDED FOR the method of mold replacement.