The invention relates to a multi-cavity injection mould, in particular for preforms provided with a bottleneck stub, for the production of bottles by the blow-moulding method. The mould has on a fixed plate the outer moulds forming a cylindrical section. Also provided are separate moulding elements for the contour forming the bottom in which in each case the main runner is formed, which is in connection with a hot-runner manifold plate and in which there can move sprue shut-off needles, which are adjustable in the axial direction by means of a drive. Also provided is a movable plate, on which the cores engaging in the outer mould are fastened by their feet, as well as mould jaws, which can be displaced transversely to the axis of the outer mould, have an inner contour representing the bottle stubs and are split centrally with respect to the bottle stub. Each of the outer moulds is formed in a separate mould body, on which there is centred on one end face the moulding element for the bottom contour, which bears the sprue. The separate mould bodies are fastened to this end face on the plate bearing the sprues. For each mould body there is also provided a pair of jaws with a bottleneck outer contour and provided with a coaxial centring cone, which interacts with an internal cone in the mould body. The core mandrels may be secured in a transversely movable manner by their feet in the plate bearing them, an effective centring between the jaws of the associated pair of jaws and the cores being provided when the jaws close. The core feet may in this case be arranged in a freely movable manner in the plate securing them. They may, however, also be secured in an adjusting device, which is provided with interengaging eccentrically lying sections. IMAGE
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