the invention relates to a method and a device for blow - moulding containers from preforms which are previously heated in the region of a heating section and consist of a thermoplastic material . the preforms are transferred to a blowing device following the heating thereof , in which they are shaped to form containers by the application of a blowing pressure inside blow moulds . said blow moulds respectively consist of at least two blow mould segments . the preforms are transported together with the blow moulds at least along part of a peripheral path of a rotating blow wheel . a separating plane of the blow mould segments is positioned at least in an opened state of the blow station in a rotational direction of the blow wheel , facing forwards , with an angle of inclination in relation to the radial direction of the blow wheel . the blow station is positioned at least in two parts during a transfer process .