| 摘要 |
A star construction (1,5) having variable pitch arms (7) for a rotary molding machine for making plastic vessels and bottles, comprises a plurality of arms including gripper elements (8) and a system including two levers which engages with the grippers, while cooperating with respective cam contours (11,12), the lever and cam system being reciprocatedly driven for providing a pitch variation and controlling the positions of the gripper elements. <??>With respect to prior solutions, the variable pitch arm star construction according to the invention allows to quickly and simply perform the operations necessary for modifying the arm pitch. <IMAGE>
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