Timing device for printing machines

US4665498A · kind A · utility

Assignee

• VEB Kombinat Polygraph Werner Lamberz · DE

Inventors

• Falk Buschmann · Coswig, DE
• Karl-Heinz Foerster · Dresden, DE
• Volker Eichler · Coswig, DE
• Hartmut Heiber · Radebeul, DE
• Volmar Dittrich · Coswig, DE

Key dates

• Filing date: Jun 25, 1984
• Grant date: May 12, 1987
• Expiry date: Jun 25, 2004

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F33/025
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A central timing device for controlling a plurality of working functions of a printing machine, includes a reference pulse generator, assembled to encoder discs connected to a cycle shaft of the printing machine to produce a sequence of angular increment pulses and at least one single synchronizing pulse. The reference pulse generator is connected to a pulse processing circuit which includes a first address coding device for producing binary coded addresses pertaining to angles of rotation of the machine. A second address coding device is coupled to the encoder for angular increments via a timing circuit including an AND-gate and a monostable multivibrator to produce binary coded addresses pertaining to the angle of rotation/rotary speed of the printing machine. The outputs of the first and second address generating devices are connected to addressing inputs of separate PROMs preprogrammed with desired timing signals.