Vibration-absorbing cylinder for printing presses

Printing – Printing members – Rolling contact

Patent

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Details

101217, 101142, 1014151, 100162B, 29124, B41F 1308

Patent

active

043411576

ABSTRACT:
A vibration-free cylinder for a printing press in phased rolling engagement with a companion cylinder and which is formed of a cylinder body of star-shaped cross section having a central axial portion and four axial webs extending radially outward therefrom to define between them recesses of sector-shaped cross section. The surface of the cylinder is formed by first and second arcuate shell segments, the first of which extends over substantially half of a revolution and the second over substantially one-quarter revolution, the segments having parallel edges bridging the tip portions of the webs for enclosing all but one of the recesses which is uncovered to produce a gap defining the leading edge of the cylinder surface. The web at the leading edge is extended outwardly to the locus of the cylinder surface so that the cylinder body absorbs the impact with the companion cylinder which occurs at the leading edge at each revolution. The edges of the shell segments are in abutting relation to the tip portions of the webs, with a resilient vibration-dampening layer of adhesive being interposed at the abutting surfaces. The webs are so designed and positioned that maximum resistance to bending stress is in the plane of the web at the leading edge position. In the preferred embodiment the enclosed recesses are in addition occupied by vibration-absorbing material.

REFERENCES:
patent: 3453955 (1965-10-01), Seel et al.

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