US 5,309,834 AGranted

Rotary printing machine

AssigneeAsea Brown Boveri AG

InventorDieter Koch

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Abstract

In a rotary printing machine with directly driven cylinders and at least one directly driven folding unit (12), those drives of the cylinders and their drive controllers which can be assigned to a paper web are combined to form printing-station groups (2). The printing-station groups (2a-d) are connected to one another, to the folding unit (12) and to the operating and data-processing unit (1) via a data bus (3). Within the printing-station group (2), the individual drives of the cylinders and their drive controllers are connected via a high-speed bus system. The printing-station groups (2a-d) acquire their position reference directly from the folding unit (12). The master control system (1) is now responsible only for the presetting of desired values and desired-value deviations and the processing of actual values. The division of the overall control system into a master control system and autonomous printing-station groups (2) achieves that simplicity, flexibility and robustness in respect of faults which is necessary for producing a directly driven rotary printing machine.

Claims11

Dependent claims

A rotary printing machine, comprising a plurality of cylinders having individual drives in the form of respective electric motors such that the plurality of cylinders are driven individually by the respective electric motors, and at least one folding unit which is also driven individually by an electric motor, wherein:

a) the individual drives of the cylinders are controlled by respective drive controllers, the individual drives of the cylinders and their drive controllers forming a printing-station group, and wherein the printing machine includes a plurality of printing-station groups;
b) the plurality of printing-station groups are assigned to at least one folding unit and acquire a position reference from said at least one folding unit wherein management of the printing-station groups taking place by means of a master control system, wherein the master control system includes an operating and data-processing step;
c) the individual drives of the cylinders and their drive controllers of a printing-station group are connected by a high-speed drive bus system;
d) the plurality of printing-station groups are connected to one another and to the operating and data-processing unit by a data bus, the operating and data-processing unit managing the printing-station groups;
e) wherein the management comprises presetting of desired values and desired-value deviations, and a processing of actual values and coordinating a desired-value command of the printing-station groups relative to one another and relative to at least one folding unit;
and
f) wherein the at least one folding unit is connected to the printing-station groups by the data bus.

4 more elements

a) the individual drives of the cylinders are controlled by respective drive controllers, the individual drives of the cylinders and their drive controllers forming a printing-station group, and wherein the printing machine includes a plurality of printing-station groups;
b) the plurality of printing-station groups are assigned to at lest one folding unit and acquire a position reference from said at least one folding unit wherein management of the printing-station groups taking place by means of a master control system, wherein the master control system includes an operating and data-processing step;
c) the individual drives of the cylinders and their drive controllers of a printing-station group are connected by a high-speed drive bus system;
d) the plurality of printing-station groups are connected to one another and to the operating and data-processing unit by a data bus, the operating and data-processing unit managing the printing-station groups;
e) wherein the management comprises presetting of desired values and desired-value deviations, and a processing of actual values and coordinating a desired-value command of the printing-station groups relative to one another and relative to at least one folding unit;
and
f) wherein the folding unit is connected to the printing-station groups by a bus which is separate from said data bus.

4 more elements

Dependencies are inferred from the claim text.