Mould opening and closing linkage device of bottle blowing machine

The utility model provides a mold opening and closing linkage device of a bottle blowing machine. The mold opening and closing linkage device comprises a fixed seat, a left module, a right module and a bottom module, wherein the left module and the right module are arranged in a relative movement manner and are respectively hinged to the fixed seat; the bottom module is mounted on the fixed seat in a lifting manner and is positioned between the left module and the right module; the linkage driving module is mounted on the fixed seat, and drives the left module, the right module and the bottom module to synchronously complete mold opening and closing actions through a crank connecting rod structure; the linkage driving module with a crank connecting rod structure is arranged, under the rotating action of a single motor, the three linkage parts correspondingly drive the left module, the right module and the bottom module to synchronously complete mold opening and closing actions, the action speed is high and st