Patent · US Expired

Sheet feeding unit for rotary printing machine

US5134938A · kind A · utility

4Cited by

3References

3Claims

0Family size

Assignee

KBA-Planeta AG · DE

Inventors

Winfried Busse · Radebeul, DE
Gunter Peter · Wadern, DE
Otfried Rudolph · Dresden, DE
Arndt Jentzsch · Coswig, DE

Key dates

Filing date	Sep 20, 1991
Grant date	Aug 4, 1992
Priority date	—
Expiry date	Sep 20, 2011

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41F21/106
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A sheet feeding unit for a rotary sheet printing machine which is operative for selective face printing or face and back printing with turning of a sheet rear edge and which has a turning cylinder and a printing cylinder located before the turning cylinder, includes elements located underneath the turning drum and the printing drum for conducting and guiding overlong sheets in face and back printing during a turning step on a front edge. The elements include a suction member arranged rotatably over a circular path so as to take over a sheet in a point of intersection of tangent t.sub.s, a stationary segment arch arranged equidistantly relative to the circular path under a point of intersection T.sub.4,5 of the printing cylinder and a sheet guiding cylinder and also provided with guiding rollers, and a guiding plate located above a turning point of the suction member at a distance from the printing cylinder and inside the circular path over a line of a secante.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.