Patent · US Expired

Impression cylinder for sheet-fed rotogravure presses

US4475459A · kind A · utility

11Cited by

11References

12Claims

0Family size

Assignee

MAN Roland Druckmaschinen AG · DE

Inventors

Johannes Wanke · Offenbach am Main, DE
Kurt Difflipp · Dietzenbach, DE
Jurgen Ruh · Heusenstamm, DE

Key dates

Filing date	Dec 22, 1981
Grant date	Oct 9, 1984
Priority date	—
Expiry date	Dec 22, 2001

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41F21/10
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An impression cylinder for a rotogravure press having a recessed sheet stock gripper mechanism with a swivelling mechanism that swivels the grippers within the cylinder contour by revolving the grippers around a theoretical axis on the cylinder contour. The swivelling is rigidly and precisely constrained along an arcuate path by a plurality of arcuate guides disposed along the axial length of the cylinder. The opening and closing of the grippers and the swivelling of the grippers into the cylinder contour are caused to occur in sequence synchronized to the cylinder rotation by cam followers on gripper shaft pivot arms cooperating with cam followers journaled to the gripper shaft that are spring pressed onto cam surfaces fixed to the machine frame at the ends of the cylinder.

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