Timing device for printing machines

US4661918A · kind A · utility

Assignee

• VEB Kombinat Polygraph Werner Lamberz Leipzig · DE

Inventors

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

Key dates

• Filing date: Jun 25, 1984
• Grant date: Apr 28, 1987
• Expiry date: Jun 25, 2004

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B19/045
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A timing device for controlling the operation of printing machines comprises: an encoder disc for generating pulses correspnding to angular increments during one rotation of the machine; at least one encoder disc for generating a singular synchronizing or reference signal; address generating means including a counter reset by the singular synchronizing pulse and counting the angular increments to continuously produce a bindary coded address at its outputs; a second counter coupled to the encoder of angular increments via an AND-gate controlled by a monostable multivibrator to produce at its outputs a binary coded address corresponding to the rotary speed of the printing machine. The addresses from respective counters are fed via corresponding data buses to address inputs of a programmable read only memory. From the outputs of the PROM timing output signals are read out as a function of the angular position of the machine or the function of the angular position and of the rotary speed of the machine.