Device for moulding containers from a thermoplastic material, and container production plant using same

Device for blow molding or stretch-blow molding bottles from thermoplastic preforms, the device including a single bill-fold type mold (2) having two half-shells joined to each other by a fixed mutual pivoting pin coinciding with respective edges of the two half-shells, and actuation means associated with the two half-shells in order to pivot the latter with respect to each other in the mold-closing direction or in the mold-opening direction, wherein the actuation means comprise a movable arm mounted so as to rotate freely about a fixed support pin and fastened to said half-shells, said arm furthermore supporting a cam follower, or a guide cam, capable of engaging with a rotating guide cam, or alternatively with a cam follower driven over a circular path, said cam being profiled in such a manner as to cause the arm to move so as to open and close the mold, and drive means for driving the rotating cam, or alternatively the cam follower, said drive means being synchronized with the feeding of the mold with preforms.