摘要:
A printing press includes a roller having a first antifriction bearing and a second antifriction bearing. The first antifriction bearing has rolling bodies, a first ring and a second ring. One of the two rings forms an outer ring and the other of the two rings forms an inner ring. Roller sockets are configured as quick action changing devices for receiving the anti-friction bearings during insertion of the roller into the printing press. The first antifriction bearing is configured as an axial floating bearing with a considerable axial movement play of the rolling bodies between the latter and one of the rings. The second antifriction bearing is configured as an axial locating bearing without such a considerable axial movement play. A centering device centers one of the rings relative to the other.
摘要:
A printing press includes a first rotary body with a first bearer ring and a second rotary body with an axle which eccentrically supports a second bearer ring. The second bearer ring is in rolling contact with the first bearer ring and is rotatably coupled to the second rotary body.
摘要:
A press contains an oscillating doctor and a motor for driving the oscillating doctor axially. The press further has at least one oscillating roller (ink distributor roller and/or damping solution distributor roller) and an oscillating mechanism, via which the oscillating roller is connected to the motor such that the oscillating roller and the oscillating doctor can be driven axially together by the motor.
摘要:
A method for controlling a quantity of medium transferable from a screen roller of a printing machine onto a roller that is in contact with the screen roller includes exerting an influence upon a difference in circumferential speed between the screen roller and the roller in contact therewith, and further includes controlling the difference in the circumferential speed as a function of the printing speed of the printing machine, so that printed medium density remains at least approximately constant at least within a wide printing speed range.
摘要:
A doctor device in an inking unit of a rotary printing machine, having a base member, and a working doctor adjustable with respect to the base member, includes a sensor for determining a position of the working doctor relative to the base member; and a rotary printing machine includes the doctor device.
摘要:
A method for closed-loop or open-loop control of ink feed in lithographic offset printing presses having at least one inking unit, a control unit and an operating element for adjusting the ink feed across a predetermined ink feed control range, includes subdividing the predetermined control range into partial ranges in the control unit. At least one adjustment parameter of the inking unit or the printing press is assigned to each partial range in the control unit. The control unit determines the appropriate partial range as a function of the ink feed selected with the operating element and adjusts the selected ink feed in the inking unit with associated adjustment parameters in the inking unit and/or in the printing press.
摘要:
A printing press includes a roller having a first antifriction bearing and a second antifriction bearing. The first antifriction bearing has rolling bodies, a first ring and a second ring. One of the two rings forms an outer ring and the other of the two rings forms an inner ring. Roller sockets are configured as quick action changing devices for receiving the anti-friction bearings during insertion of the roller into the printing press. The first antifriction bearing is configured as an axial floating bearing with a considerable axial movement play of the rolling bodies between the latter and one of the rings. The second antifriction bearing is configured as an axial locating bearing without such a considerable axial movement play. A centering device centers one of the rings relative to the other.
摘要:
In a method for cleaning an anilox inking unit, a doctor bears against a roller and an intermediate roller bears against the roller and on an engraved roller. During cleaning, the intermediate roller has been or is displaced axially. Because the intermediate roller can be displaced axially, edge regions of the engraved roller can also be cleaned during a cleaning operation.
摘要:
An inking unit for a printing machine includes at least one roller, an ink container adjacent to the roller, a metering doctor blade disposed on the ink container and being engageable with the roller, and a movable displacer element for setting a printing ink level in the ink container relative to the metering doctor blade.
摘要:
An inking unit for a printing machine, having a metering system for printing ink, and equipment for conveying ink on a conveyor path between the metering system and a plate cylinder of a printing machine, includes a vacuum chamber for evaporating a dampening-solution portion from the printing ink.