Man Roland Druckmaschinen Ag

Manroland Web Systems Gmbh

Manroland Goss Web Systems Gmbh

Andreas Klemm

Günther Brandenburg

Stefan Geissenberger

Jan Seebauer

To control the cutting register of a web in a web-fed rotary press with little expenditure, a specific item of image information or a measuring mark of a printed web is registered by at least one sensor. The sensor generates a registration signal which is supplied to a control device. The registration of the image information or measuring marks is carried out immediately before or on a knife cylinder. A cutting register error is determined from the registration information and the position of the knife cylinder is influenced to correct the determined cutting register error.

Method and apparatus for controlling the cut register of a web-fed rotary press

In order to control the cut register in multi-web operation in a web-fed press and to control the web tension in a web section, image information or measuring marks from printed webs and web tensions in different web sections are registered by sensors and supplied to a control device. To correct the cut register error of at least one web, either the speed of at least one clamping point located before the knife cylinder and/or the position of the knife cylinder and, to correct the web tension, the speed of at least one further clamping point is changed, so that the actual value of the part and/or total cut register error of at least one web and the at least one web tension arc corrected to the associated predefined set points.

Method and device for regulating the crop mark for a roller printing machine with multi-web operation

To control the cutting register of a web in a web-fed rotary press and to control the tension in a web section, in a manner decoupled from each another, at least one partial cutting register error is controlled at least one web tension is controlled. The press has controlled driven clamping pointsto n, wherein j+q manipulated variables are used to influence j partial cutting register errors and q web tensions. Circumferential speeds and/or angular positions of clamping points are used as manipulated variables and the partial register error and the web tension in each case are located in the same or in different web sections.

Method and apparatus for controlling the web tensions and the cut register errors of a web-fed rotary press

To control the cut register of a web in a web-fed rotary press and to control the web tension decoupled from the control of the cut register, a specific item of image information or measuring marks of the printed web are registered by at least one sensor and the web tension is registered by at least one further sensor. The deviation of the position of the printed image with respect to its intended position, based on the location and time of the cut, is determined from the item of image information and is therefore available as actual values and supplied to a control device. The cut register error and the web tension can be influenced in a manner decoupled from each other.

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Bad Wörishofen, Germany

Andreas Klemm