| 摘要 |
The present invention relates to a blowing or stretch-blowing machine for preforms made of polymer material adapted to transform said preforms into bottles or containers, and in particular to the closing mechanism of the forming half-molds. In particular, the invention relates to a blowing or stretch-blowing machine (1) for bottles or containers made of polymer material having a plurality of molds (1) movable on a transport system, in which each of said 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 means for vertical/translational movement of the bottom plate, to cyclically form a closed cavity adapted to receive a preheated preform and to allow the expansion by blowing or stretch-blowing of the preform inside the cavity to obtain a bottle or container, characterized in that each of said 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 the motorization of the machine. |
