Koenig & Bauer-aktiengesellschaft

Volker Gerold Rauh

Andreas Bernard

Lars Keil

Kristina Freisinger

Michael Koblinger

Rudolf Geldhauser

Helmut Holm

Nikolaus Markert

Karl-Heinz A Schneider

Burkhard Hubert Heinrich Rachor

Elmar KLÜPFEL

Thomas KÖRNER

Jürgen Hüblein

Regina Rita Bauer

An application unit includes an application mechanism having an application cylinder, a forme cylinder, and a supply roller, along with a positioning device. The positioning device has a linear guide and the application unit has a magazine for supply rollers, preferably located below the application mechanism, the magazine having magazine receptacles each for receiving one supply roller. The magazine has a repositioning device, by the use of which the magazine receptacles can be placed in different magazines positions. By the use of the positioning device, a supply roller can be moved along a linear roller positioning path, one end of which is identical to a supply position and the other end of which is identical to a magazine position of the magazine that is configured as a change position. The positioning device preferably has at least one transfer supporting member, which is arranged to be movable in and counter to a positioning direction relative to the frame of the flexographic application mechanism, guided along the at least one linear guide, and on which at least one component of a bearing seat can be arranged, which is configured to receive a rolling bearing arranged on the at least one supply roller.

Application unit with positioning device and magazine

An application unit comprises an application mechanism with an impression cylinder, a forme cylinder, and a supply roller, along with a positioning device and a magazine for supply rollers, which magazine is located below the application mechanism. The magazine has magazine receptacles for supply rollers and a movable repositioning device, by the use of which, the magazine receptacles can be placed in different magazine positions. One of the magazine positions is a change position, and when a magazine receptacle is located in that change position, a supply roller can be transferred, with respect to a positioning direction, between the magazine receptacle and a remote region of a roller positioning path that connects the magazine to the application mechanism. The positioning direction deviates no more than 45 degrees from a vertical direction. One of the magazine positions is a loading position, and when a magazine receptacle is located in the loading position, a supply roller can be transferred along a loading path with respect to a loading direction, between the magazine receptacle and a loading area. The loading direction deviates no more than 30 degrees from at least one horizontal direction.

An application unit includes an application mechanism with an impression cylinder, a forme cylinder, a supply roller, and a positioning device. The positioning device has a linear guide and a main supporting member, which is arranged to be movable in a positioning direction, guided by the linear guide, and is arranged rotatably on the main supporting member by a rolling bearing. The positioning device has a transfer supporting member, which is arranged to be movable in the positioning direction relative to the main supporting member, guided by the linear guide. On the transfer supporting member, a component of a bearing seat is provided, and which is configured to receive a rolling bearing arranged on the supply roller. The positioning device has a reservoir supporting member, which is arranged to be movable in the positioning direction, both relative to the main supporting member and relative to the transfer supporting member, guided by the at least one linear guide. An intermediate reservoir for application fluid is arranged on the reservoir supporting member. The reservoir supporting member is arranged, at least partially, between the main supporting member and the transfer supporting member as viewed in the positioning direction.

Application unit with positioning device

A roller of a printing machine includes a device for use in the generation of an axial oscillating movement of the rotating roller. The device includes a drive that is comprised of a pump which pressurizes a working fluid. The pump is arranged inside of the roller.

Roller of a printing machine comprising a device for generating an axial oscillating movement of the rotating roller

A printing unit contains at least one printing group which is comprised of at least two cylinders which cooperate to form a printing nip. At least these two cylinders are interconnected in a positive fit by a drive. The two cylinders can be engaged with one another in a first position (ON), or disengaged from one another in a second position (OFF). The two cylinders can also be disengaged from each other at a spacing distance in a third position (STOP). That spacing distance is sufficient to allow a web in the printing operation to be guided between the two cylinders without making contact with the two cylinders.

Printing unit

A cylinder can receive one or more packings which are held in proper register. One or more register elements are carried by support strips which are placed in the cylinder barrel. These register elements can be held against longitudinal displacement in the cylinder barrel by a clamping device that is operable from the end face of the cylinder. The clamping device includes a clamping assembly which is useable to hold the register elements in place.

Device for providing a cylinder with a packing and registers

A lateral registration device for printing plates in a plate cylinder uses axially shiftable insertion strips. These insertion strips have register pins which engage recesses in the beveled ends of flexible printing plates inserted into an insertion slit. The insertion or guide strips are arranged adjacent each other in the circumferential direction of the plate cylinder.

Lateral registration device having insertion strips and register pins

A dampening roller, which functions reliably and which can be driven by friction has a surface of a rubber-elastic material. Drive rings of equal diameter to that of the working surface of the dampening roller, as defined by the rubber-elastic material, are provided at either end of the dampening roller. These drive rings are also made of the same rubber-elastic surface material.

Dampening roller

Damage to rotating cylinders in a web-fed rotary printing machine, due to breaks or tears in the material web passing through the machine, is prevented by providing a web guide roller with a directionally switched coupling intermediate two spaced gripping locations. If the web breaks, the web guide roller becomes positively driven and prevents web roll up on one of the rotating cylinders.

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Hettstadt, Germany

Volker Gerold Rauh