Patent ID: 8662881

Claim:
Stretch-blow molding machine for manufacturing containers from preforms, comprising at least one blow molding station, at least one stretching rod with a drive unit connected at a bearing support of the blow molding machine, the drive unit comprising an electric servomotor coupled to a stretching slide in which the stretching rod is placed for transmitting linear movements to the stretching rod for electrically stretching the respective preform, the stretching rod is configured to be changeable in a defined, at least approximately axial direction of the stretching rod during a stretching rod change step, a stretching rod quick change device including a releasable coupling provided in the blow molding station, the stretching rod quick change device being adapted to be transferred between a centered operating position and a stretching rod change position, wherein in the centered operating position of the stretching rod quick change device the stretching rod is placed in the stretching slide in a taper mounting, and wherein mutually aligned muff-like male taper pieces are arranged at the drive unit and at the stretching slide between which a stretching rod head portion is clamped by means of a releasable clamping element acting at the male taper pieces.