| 摘要 |
<p>A mandrel assembly for use in a machine for the continuous printing of cylindrical containers (2), comprising a mandrel wheel (10); mandrel holders (8), pivotally mounted on circumferential portions of the mandrel wheel; elongated spindles (34) for supporting cylindrical containers on the peripheral surfaces thereof, rotatably mounted on the mandrel holder and radially displaceable relative to the central axis (26) of rotation of the mandrel wheel; a cam follower (48) rotatably mounted on each mandrel holder; a cam track assembly (50) operably associated with the cam followers for causing preselected radial displacement of the cam followers with respect to the central axis of rotation of the mandrel wheel which in turn causes preselected radial displacement of associated mandrel spindles relative to a printing blanket wheel device to cause a container to be printed; skip-print apparatus comprising a pivot arm (44) pivotally mounted on the mandrel wheel and rotatable relative to each mandrel holder and having a surface bearing against a rotatable cam (64) having a first cam surface (66) for permitting printing of the cylindrical container and a second cam surface (68) for positioning the mandrel holder at a radially inward location so that an elongated spindle or an improperly positioned cylindrical container thereon will not contact the printing blanket wheel device and control means for rotating or not rotating the rotatable cam.</p> |
