Installation for the production of hollow bodies by injection molding and subsequent blow molding, comprising - an injection molding tool with at least one cavity for manufacturing a preform having a neck-shaped extension and a hollow body portion adjacent to the neck-shaped extension, - a blowing mold for shaping the hollow body from the preform and - transfer means for transferring the preform from the injection molding tool to the blowing mold, the transfer means comprising a support frame on which at least one supporting device for the at least one preform is arranged and - where during transfer of the preform between the opened injection molding tool and the transfer means, the preform is retained by a tool part of the injection molding tool on the exterior of its neck-shaped extension, and is removed from the cavity, characterized in that - the support frame is guided, at a guide assembly formed by transfer rails, between the injection molding tool and the blowing mold in a rectilinear transfer movement, and with a horizontally oriented transport plane being defined by the transfer rails, - the transfer of the preform between the opened injection molding tool and the transfer means takes place in a perpendicular direction of movement, arranged vertically with respect to the transport plane, and with the preform being placed on the at least one supporting device with the interior of its neck-shaped extension, and the at least one supporting device resting on an inner surface of the neck-shaped extension, - the at least one supporting device has, at its center, at least one recess formed as a through opening for the supply of blowing air and for the penetration of an extension mandrel into the interior of the preform, and in that - during the blowing process for forming the hollow body, the neck-shaped extension is retained by the at least one supporting device. - an injection molding tool with at least one cavity for manufacturing a preform having a neck-shaped extension and a hollow body portion adjacent to the neck-shaped extension, - a blowing mold for shaping the hollow body from the preform and - transfer means for transferring the preform from the injection molding tool to the blowing mold, the transfer means comprising a support frame on which at least one supporting device for the at least one preform is arranged and - where during transfer of the preform between the opened injection molding tool and the transfer means, the preform is retained by a tool part of the injection molding tool on the exterior of its neck-shaped extension, and is removed from the cavity, - the support frame is guided, at a guide assembly formed by transfer rails, between the injection molding tool and the blowing mold in a rectilinear transfer movement, and with a horizontally oriented transport plane being defined by the transfer rails, - the transfer of the preform between the opened injection molding tool and the transfer means takes place in a perpendicular direction of movement, arranged vertically with respect to the transport plane, and with the preform being placed on the at least one supporting device with the interior of its neck-shaped extension, and the at least one supporting device resting on an inner surface of the neck-shaped extension, - the at least one supporting device has, at its center, at least one recess formed as a through opening for the supply of blowing air and for the penetration of an extension mandrel into the interior of the preform, and in that - during the blowing process for forming the hollow body, the neck-shaped extension is retained by the at least one supporting device.