| 摘要 |
<p>The invention concerns a machine for making thermoplastic containers by stretching and blowing a preform (10), comprising several moulding stations (12) mounted on a rotary carrousel (14), each station (12) being provided with at least a stretch rod (20) whereof the sliding movement is controlled along an axis (An). The invention is characterised in that the stretch rod is controlled by a magnetic device comprising at least a fixed magnetic guide (36, 38, 40, 42) arranged about the axis (A1) of the carrousel (14) and a slide (24) which is integral with the stretch rod (20) and bears at least a magnetic shoe (32, 34) and the shoe and the guide co-operate by magnetic coupling such that the guide imposes a predetermined axial movement on the slide (24)</p> |
