| 摘要 |
<p>The pressing device provided for pressing the cleaning web (21) against the rubber blanket cylinder (R) of a printing machine comprises a sheet (18) of natural rubber, with its longitudinal side edges being fastened to a supporting straight-sided body (1) arranged parallel to the said cylinder. A cleaning web is lead over the outward face of this sheet, and upon control the said sheet is deformed by the pushing action of a plurality of small cylinder-and-piston units (9) housed in the said body (1) in a properly equispaced relation, and acting upon the entire length of said sheet, with the interposition of washers (13) for widening the said piston units pushing surface, and of a steel strip (14) for longitudinally and transversely distributing this pushing action, and of a pair of rectilinear parallel beads (16, 116) of elastic-yieldable material, which perform their function by contacting the sheet (18), and are provided for localizing the said pushing action on parallel, near sections of the cylinder, the said beads preferably consisting of internally armored rubber hoses.</p> |
