Abstract: A blowing or stretch-blowing machine for preforms made of polymer material. The blowing or stretch-blowing machine (1) has a plurality of molds (1) movable on a transport system, in which each of the molds (1) comprises a first half-mold (2a) and a second half-mold (2b) hinged around a hinge axis (3) and a bottom plate (4) adapted to cooperate with the half-molds (2a, 2b) for closing the bottom of the mold (1), and a mechanism for vertical/translational movement of the bottom plate, to cyclically form a closed cavity adapted to receive a preheated preform and allow expansion, by blowing or stretch-blowing of the preform inside the cavity, to obtain a bottle or container. Each of the molds (1) comprises a system for synchronized opening/closing of the half-molds (2a, 2b) and of the bottom plate (4) actuated by an actuator thereof (30) independent from motorization of the machine.

Abstract: A blowing or stretch-blowing machine for preforms made of polymer material. The blowing or stretch-blowing machine (1) has a plurality of molds (1) movable on a transport system, in which each of the molds (1) comprises a first half-mold (2a) and a second half-mold (2b) hinged around a hinge axis (3) and a bottom plate (4) adapted to cooperate with the half-molds (2a, 2b) for closing the bottom of the mold (1), and a mechanism for vertical/translational movement of the bottom plate, to cyclically form a closed cavity adapted to receive a preheated preform and allow expansion, by blowing or stretch-blowing of the preform inside the cavity, to obtain a bottle or container. Each of the molds (1) comprises a system for synchronized opening/closing of the half-molds (2a, 2b) and of the bottom plate (4) actuated by an actuator thereof (30) independent from motorization of the machine.