A device for blow molding containers, provided with a supporting frame for at least one station for blow molding preforms in order to obtain containers, the blow molding station includes two lateral bodies and a bottom which are adapted to provide by blow molding at least one container, at least one of the two lateral bodies being movable on command by virtue of elements for cyclic opening and closing, with respect to the supporting frame, about an articulation axis which is substantially parallel to the axis of the container.