| 摘要 |
Containers are closed with screw caps by a carousel machine of which a central drum (31) is rotatable about a vertical axis (A) and carries a set of capping units (36) equipped with respective capping heads (37), each presenting a gripper (38) by which the cap (3) is held, and a mechanism (66) by which the hinged jaws (39) of the gripper (38) are opened and closed; each capping head (37) is capable of axial motion induced by components incorporated into the relative unit (36), which are guided axially in their movements and supported by auxiliary components (40; 49, 50) associated rigidly with the central drum (31).
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