Patent application number | Description | Published |
20080229960 | Methods for setting the contact pressure of a displaceably mounted roller - A method is used to set a contact pressure between a displaceable roller and another roller or for moving the displaceable roller with respect to the other roller. At least one actuator is subjectible to the action of a pressure medium and presses the displaceable roller toward the other roller with an adjustable force. The pressure of the pressure medium can be adjusted by a valve. A switchover device is provided for use in connecting the valve to different actuators, as desired. | 09-25-2008 |
20080229961 | Methods for setting the contact pressure of a displaceably mounted roller - A method is used to set a contact pressure between a displaceable roller and another roller or for moving the displaceable roller with respect to the other roller. At least one actuator is subjectible to the action of a pressure medium and presses the displaceable roller toward the other roller with an adjustable force. The pressure of the pressure medium can be adjusted by a valve. A switchover device is provided for use in connecting the valve to different actuators, as desired. | 09-25-2008 |
20080271621 | Printing group including cylinders supported for movement - A printing group of a printing machine is comprised of a pair of cylinders each having a circumference that corresponds essentially to a length of a section of a side to be printed. The effective generated surface of at least one of the cylinders comprises, at the most, one break in the circumferential direction. The surface forms, in the longitudinal direction, a plurality of adjacently arranged breaks which, when viewed in the circumferential direction, are arranged in a staggered manner with respect to each other. | 11-06-2008 |
20090020028 | Printing groups comprising at least two cooperating cylinders and radially movable bearing units - Printing groups are each comprised of at least two cooperating cylinders, each of which is mounted in a bearing unit that radially displaces its associated cylinder. At least one of these bearing units is provided with an actuator which is controlled, or regulated by a control unit. An inking unit, which encompasses at least one ink application roller, is provided for each printing group. At least one of the cylinders of the printing group, and an ink application roller of the associated inking unit can optionally be placed against each other. A dampening unit, comprising at least one dampening fluid application roller, is also provided. At least one of the cylinders of the printing group and a dampening fluid application roller of the dampening unit are also optionally placed against each other. The at least one actuator for the bearing unit is remotely controlled and is embodied either as a hydraulic actuator or as a pneumatic actuator. | 01-22-2009 |
20090078134 | Flexographic Printing Press - A flexographic printing press is comprised of at least four printing cylinders which are each driven by a respective drive motor. These at least four printing cylinders cooperate directly with a common satellite cylinder during the printing of a web of material. Each of these printing cylinders supports at least one flexographic printing plate. Each end journal of such printing cylinder is mounted in at least one linear bearing that is located on a lateral frame, and which can be moved perpendicularly to the axis of rotation of the respective cylinder. A stator of each driving motor can be moved along with the associated linear bearing, or along with the printing cylinder. Each such drive motor is configured as a synchronous motor which is excited by a permanent magnet. An independent hydraulic actuator is assigned to each printing cylinder, to change the position of that printing cylinder. At least one linear bearing is arranged in a bearing unit which is placed on the interior wall of the respective lateral frame. The journals of each printing cylinder do not penetrate the lateral frames. | 03-26-2009 |
20090078138 | Printing Groups of a Printing Press - A printing group of a printing press is comprised, at leasdt, of a transfer cylinder, a forme cylinder and of a first roller ink form roller of an inking unit which cooperates with the forme cylinder as an ink application roller. the first ink form roller has substantially the same duameter as the forme cylinder. Axes of rotation of the forme cylinder and of the transfer cylinder define a plane when these cylinders are in their operating postion. A plane that is defined by axes of rotation of the first roller and the forme cylinder forms an angle of no greater then 45° with respect to the forme cylinder/transfer cylinder plane. At least one of the forme cylinder and the transfer cylinder is mounted sa as to be adjustable, by the use of at least on actuator, in the direction of the transfer cylinder, with the aid of at least a first actuator that is assigned exclusively to the forme cylinder or to the transfer cylinder and that is actuated by a pressure medium. The first roller is mounted for movement, in the direction of the transfer cylinder, by an actuator assigned only to that first roller. A second, which cooperates with the first roller, is postioned below the forme cylinder/transfer cyinder axis of rotation defining plane. | 03-26-2009 |
20090090261 | Inking unit of a rotary press, comprising a film roller - An inking unit of a rotary printing press includes a film roller. The film roller has a structured outer surface that has a Shore D hardness ranging between 80 and 90 and a stochastic surface. The stochastic surface is incorporated into the outer surface of the film roller by peening. | 04-09-2009 |
20090107353 | Printing forme magazine with receiving arrangment for receiving a plurality of printing formes to be mounted on a forme cylinder of a printing press - At least two blankets which are removed from the same cylinder of a printing machine one after the other, are stored in a storage device. The blankets are drawn off the cylinder in a longitudinal direction and are stored in the device at an angle of inclination of not more than 15° relative to the horizontal. The second blanket to be drawn off is stored below the previously drawn-off blanket at a distance that is vertical along its length. | 04-30-2009 |
20090145315 | Printing Groups of a Printing Press - A printing group of a printing press is comprised of a transfer cylinder, a forme cylinder and a first roller of an inking unit. That first inking unit roller cooperates, as an ink application roller, with the forme cylinder. The inking unit is provided with two axially traversing friction cylinders which are serially disposed in the ink path to the forme cylinder. The first inking unit roller has substantially the same diameter as the forme cylinder. | 06-11-2009 |
20090205520 | Drive units of a rotating component of a printing press - A drive unit is provided for a rotating component of a printing press, which rotating component is disposed between spaced lateral frames. A bearing assembly supports the rotatable component so that it is movable in a direction of movement which is perpendicular to the axis of rotation of the rotatable component. A journal of the rotatable component does not penetrate an alignment of the lateral frame in its mounted orientation. The rotatable component is rotatably driven by an independent drive motor. A rotor of the drive motor is joined to the journal of the rotatable component in a torsion-proof, detachable configuration. A bearing assembly for the journal is provided with a movable bearing block that receives the journal of the rotatable component, and which is located on an interior portion of the bearing assembly, relative to the plane of the lateral frame. A stator of the driving motor is rigidly, and removably connected to the movable bearing block. | 08-20-2009 |
20090217832 | Printing Unit and Method for Adjusting a Print-On Position - A printing unit is comprised of at least two cylinders which cooperate with each other in a printing group. At least one of these at least two cylinders is movably mounted so that it can be positioned against the other of the at least two cylinders by the use of at least one actuator, which is preferably configured as a power-controlled actuator. A control device is provided and in which several different preset values, which represent different levels of contact force between the two cylinders, are stored. Such data storage is in accordance with a criterion which concerns machine data and/or consumed material data and/or operational data. This data is usable to position the cylinder by operation of the actuator. | 09-03-2009 |
20090272284 | Assemblies in the printing unit of a rotary press - An assembly in a printing unit of a rotary printing press includes at least one plate cylinder, three ink forme rollers, two vibrator rollers and an ink separator roller. Both of the vibrator rollers are applied directly to the ink separation roller. One of the ink forme rollers is applied to both one of the vibrator rollers and the plate cylinder. The secondary two ink form rollers are applied both to the other vibrator roller and to the plate cylinder. The plate cylinder is covered with several printing formes. An upper ink forme roller is located such that a horizontal line that is tangent to the circumference of that upper ink forme roller is positioned at a vertical decline of at least 50 mm from a horizontal line that is tangent to the circumference of the plate cylinder. | 11-05-2009 |
20100024673 | METHOD FOR OPERATING A PRINTING UNIT HAVING AT LEAST ONE PRESS UNIT, AND A PRESS UNIT FOR CARRYING OUT THE METHOD - A printing unit has at least one press unit having a plate cylinder with at least one printing plate that can be mounted on the plate cylinder and which carries a printing image. The plate cylinder has at least one cylinder channel in which ends of the printing plate can be fixed or positioned. The printing plate has a leading angled end and also has a trailing angled end, as viewed in the direction of rotation of the printing cylinder during operation of the printing press. The printing plate can be secured to the plate cylinder by insertion of the plate leading end into the cylinder channel and by insertion of the plate trailing end into the same, or another cylinder channel. Initially, the plate trailing end is fixed in its associated cylinder channel and the plate cylinder is rotated in a rotational direction counter to a production direction. The leading plate end is then fixed in its associated cylinder channel during continued rotation of the plate cylinder opposite to a production direction. Once the printing plate is secured, the printing cylinder is rotated in its production direction. | 02-04-2010 |