Changing drive for the distributing rollers of at least one inking unit of a printing unit of an offset rotary press

US4711173A · kind A · utility

Assignee

• MAN Roland Druckmaschinen AG · DE

Inventors

• Helmut Emrich · Offenbach am Main, DE
• Josef Mathes · Offenbach, DE
• Heinrich Ochs · Koblenzer Straße, DE
• Janko Despot · Offenbach am Main, DE

Key dates

• Filing date: Jan 28, 1986
• Grant date: Dec 8, 1987
• Expiry date: Jan 28, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F31/15
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The amount of travel and the phase of axial reciprocation for sets of distributing rollers provided on each of at least two inking units of a rotary printing unit are independently adjustable from a central location. For each of the inking units, one eccentric drive adjustable in reciprocating phase and in the stroke or amount of travel is connected to the end portion of an impression cylinder twice the size of associated plate cylinders so that the axial reciprocating movements of the distributing rollers are derived in synchronism with the rotation of the impression cylinder and in a ratio of 1:2 to the rotation of the associated plate cylinders. In one embodiment, a single bolt clamps the two eccentric drives one on top of the other to the end portion of the impression cylinder. In another embodiment, the two eccentrics drives are concentrically arranged in ring-fashion to permit separate clamping and unclamping of each of the four independent adjustments of the amount of travel and phase of reciprocation.