Positioning device for a printing press

US5996490A · kind A · utility

Inventors

• Martin Baureis · Wiesloch, DE
• Michael A. Rehberg · Heidelberg, DE
• Norbert Thunker · Weinheim, DE
• Lothar Stadler · Eppelheim, DE
• Volker Weindel · Heidelberg, DE

Key dates

• Filing date: Aug 7, 1998
• Grant date: Dec 7, 1999
• Expiry date: Aug 7, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F33/0018
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A positioning device for a printing press, having at least one guard adjustable within an adjustment range relative to an instantaneous pole axis in a first adjusting direction counter to gravity and in an opposed second adjusting direction, and having an energy storage for setting a variable support moment in opposition to a moment of weight resulting from the gravity and engaging with the guard, includes a control cam having a predetermined contour, a cam follower contacting the control cam for controlling the support moment by motion of the cam follower relative to the control cam, the contour of the control cam being such that the guard is in equilibrium at every location within the adjustment range under the influence of the support moment and a manual force of predetermined magnitude and direction which is associated with the respective location, the manual force, upon being adjusted in the first adjusting direction, counteracting the moment of weight in an initial section of the adjustment range.