Veb Kombinat Polygraph 'werner Lamberz Leipzig'

Hilmar Trinks

Volker Eichler

Gunter Peter

Winfried Buesse

A method of automatically adjusting a printing machine which is selectively operatable in a single-side printing mode and in a two-side printing mode and includes a sheet turning drum, gripper systems and controls therefor, and a ring gear, comprises, during the adjustment from the single-side printing mode to the two-side printing mode and commencing from a first initial position, the succession of steps of adjusting the angular position of the sheet turning drum, adjusting the gripper system controls, and adjusting the angular position of the ring gear, including releasing, angularly displacing, and engaging the ring gear; and during the adjustment from the two-side printing mode to the single-side printing mode and commencing from the first initial position, the succession of steps of adjusting the angular position of the ring gear, including releasing, angularly displacing, and engaging the ring gear, adjusting the gripper systems controls, and adjusting the angular position of the sheet turning drum. The arrangement of the present invention includes various devices which are capable of performing the above method and of issuing various signals including feedback signals, and also of processing such signals in such a manner that, in the event of lack of completion of any step, at least that step is repeated from the beginning.

Method of and arrangement for automatic adjustment of the operating mode

A control system for adjusting functional elements of consecutive printing units of a multi-color, sheet-fed, rotary printing machine during its changeover from a first or face printing mode of operation to the first and second or back-up printing mode of operation. The system includes a first control circuit fed with data signals and clock pulse signals for controlling functional elements of a first printing unit, and a second control circuit for controlling functional elements of the subsequent printing unit. An auxiliary control circuit is arranged between the two control circuits and cooperates with a timing pulse adjuster which in turn is controlled by timing pulses from a timing pulse generator, from a sheet-control device and from a machine stop detecting device. The auxiliary control circuit is controlled by comparison pulses from the timing pulse generator and from a signal delivered by a switching unit activated simultaneously with the changeover from the first printing to the first and second printing mode of operation of the printing machine.

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Radebeul, Germany

Hilmar Trinks