Injection-moulding machine for producing plastic parts by the injection-moulding or reaction injection-moulding method

摘要

There is provided an apparatus for the manufacture of plastic parts from thermoplastic, thermoset and/or elastomer material by injection molding or reaction injection molding. The apparatus includes a multi-station locking unit of horizontal or vertical configuration adapted to hold a number of molds, and an associated injection unit of the simultaneous injection of the molds. The apparatus further has a movable center mold clamping plate sectioned lengthwise relative to the locking direction, the two parts of the plate being kept together by a high-speed clamping device and having arranged between the parts a melt conduction system having one or a number of separate melt conduction rails. Each melt conduction rail is rigidly clamped at its face between the sectioned mold clamping plate lengthwise relative to the direction of flow of the melt. The apparatus further includes a median centering collar and a widened melt inlet with rounded side walls adapted to receive the nozzle system and which are arranged on a flange of the melt conduction rail. A cut-off nozzle system capable of being displaced within itself in the direction of injection is rigidly mounted on a right angled adapter connected to the screw unit. The melt compensation system for receiving the back-flow of melt when the cut-off nozzle system is displaced is formed by the displacement volume of the screw unit.