Injection molding unit for an injection molding machine for processing plastics

An injection moulding unit for an injection moulding machine for processing plastics and other plasticisable substances, comprising a carrier block with a receiving bore, a replaceable plasticiser cylinder of a plasticiser unit, the plasticiser cylinder being removably receivable in the receiving bore, in which plasticiser cylinder there is arranged a feeding means which is movable along an injection axis, a locking device for alternately locking the plasticiser unit on the carrier block and unlocking the plasticiser unit from the carrier block by relative movement of bevel surfaces running transversely to the injection axis on operatively connected locking elements which are guided on bearing surfaces of at least one of the carrier block (10) and the plasticiser cylinder, wherein a bearing nut is provided on an outer surface of the plasticiser cylinder, the outer surface of said bearing nut oriented in the direction of the carrier block forming at least one of the bearing surfaces, and wherein a plurality of locking elements are provided which have, on the side spaced from the bearing surface of the bearing nut, oppositely inclined bevel surfaces which slide synchronously on bevel surfaces of the carrier block during a locking movement and during an unlocking movement and are guided diametrically to the injection axis towards each other.