Koenig & Bauer-aktiengesellschaft

Koenig & Bauer Aktiengellschaft

Walter Ritter

Erwin Paul Josef Lehrieder

Hartwig Horst Trutschel

Josef Herbert Olbort

Bastian Deppisch

Klaus Vogt

Hartmut Breunig

Klaus Walter Röder

Karl Richard Rösch

Martin Richard Keller

Thorsten Haag

Uwe Rambacher

Bernd Rudolf Heimrich

Franz Josef Vorwerk

Thomas Potzkai

Michael Schmitt

Johannes Repp

Karl Rösch

Anton Löffler

Klaus Röder

In some examples, a roll unwinder for a flying roll change includes a roll station for receiving a first material roll to be unwound, and a roll station for receiving a second material roll to be unwound after a roll change has occurred. A cut-off tool can sever a first web unwound from the first material roll, and includes a pressing element, to press the web against the outer surface of the second material roll. A supporting device can be transferred from an idle state into a working state in which the supporting device supports the web to be unwound, at least at the time of the severing process. The supporting device supports the web in a web path upstream from the cut-off tool. A receiving unit at a frame that carries the cut-off tool is movably mounted in the stand of the roll unwinder.

Roll unwinder, web-fed printing press, and method for operating a roll unwinder

A winding device for a web-shaped material has at least one first frame and at least one first roller holding device, with at least one roller holding assembly which can rotate about a first rotational axis. The winding has device at least one pressing element, and the at least one pressing element is arranged to be movable relative to the first frame in at least one adjustment direction and opposite that at least one adjustment direction. The at least one adjustment direction has at least one component which points towards the first rotational axis. A guide system for at least one drawing device, for drawing at least one material web, is arranged such that a first guide section of the guide system is arranged in a stationary manner relative to the at least one first frame. At least one linear connection between the at least one pressing element and the first rotational axis always intersects a second guide section of the guide system, regardless of the position of the at least one pressing element. A method for drawing a material web into a winding device is also provided.

Winding device for web-shaped material and method for drawing at least one material web into at least one winding device

A printing device, which is usable to produce printed products, is supplied with a material web of a predetermined length. The length of the required web is defined by the printed product to be produced. The material web is assembled from several partial webs, having defined lengths. The supply of these partial webs to the printing device is provided automatically with the use of a material management system. A control unit of this system determines the length for the partial webs that have been chosen for a certain production request. These partial webs are sent to the printing device in a certain sequence so that the last one of these partial webs to be used has the least web length of the several partial webs. The minimum length of the last partial web is determined by an end of the partial web finishing the production. This sequence is determined, at the earliest, after the cycle time has ended. The cycle time is a time frame in which a material web, or a partial material web is prepared for its respective use in the printing device.

Method for supplying a web of material of predetermined length to a printing press for producing a printed product

A material roll is transported to a roll changer by being arranged on a transport carriage. The material roll and transport carriage are placed on a transfer table which is moved into position between journal bearings of the roll changer. The transfer table is adapted to move the material roll transversely and along a longitudinal axis of the material roll and can pivot in a horizontal plane. An inclined position of the material roll, arranged on the transfer table, is determined by sensors. In this determined, axially aligned position, the material roll is axially aligned on the bearing journals. The roll size of the material is determined. An axially aligned position for roller support arms of a roll carrier of the roll changer is determined as a function of the determined roll size. An axially aligned position of the transfer table is determined as a function of the determined roll size and the determined inclined position of the material roll. The position of both ends of the sleeve of the material roll, upon insertion of the transfer table into the roll changer, is detected. The material roll is then inclined by a rotary drive which is arranged on the transfer table.

Method and device for orienting a material roll prior to axial alignment in a roll changer

A device is provided for use in covering a danger area on a roll changer that can carry at least one roll of material to be directed to a rotary, web-fed printing press. A cover is provided with a drive that can move the cover. A control unit is provided to control the drive for the cover. The cover is closed in a first operational state and is open in a second operational state. The roll of material, that is supported by the roll changer, has a first rotational speed or web speed when the cover is in the first, closed operational state. In the second, cover opened, operational state, the roll of material also has a second rotational or web speed which is greater than zero. A method for controlling a device on a roll changer is also disclosed.

Device for covering a danger area on a roll changer and a method for controlling a device

Growing community of inventors

Grünsfeld, Germany

Walter Ritter