摘要:
A form cylinder of a printing machine includes a plurality of sections in series in an axial direction of the cylinder surface. At least one printing form is arranged in each one of these sections. The form cylinder has at least one channel, also extending in the axial direction of the cylinder. That channel has an opening on the surface of the form cylinder. At least one holding device for each of the sections is arranged in this channel. Each such holding device can be pneumatically actuated in sections. At least one recess, open to the cylinder surface, is formed outside of these sections. A device that is usable to distribute compressed air to the respective sections of the form cylinder is provided in this at least one recess. The device for distributing the compressed air is configured as a plurality of valves. At least one control device is provided outside of the form cylinder and is used to activate the plurality of valves in a non-contact manner. The control device associated with each valve is oriented toward the surface of the form cylinder and acts in a radial direction.
摘要:
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.
摘要:
A rotating member of a printing press is typically a cylinder that is provided with a circumferential area. A securement channel or a flow channel, which is at least partly open toward the circumferential area of the cylinder, is formed in the cylinder. A profiled member, which at least partly covers the securement channel or flow channel, with respect to its circumferential area, is inserted into the cylinder to form an integrated joint with the cylinder.
摘要:
Printing units are supported between side frames of a web-fed rotary printing press. Each such printing unit includes at least one transfer cylinder and at least one cooperating printing cylinder, which is embodied as a form cylinder. These cylinders are rotatably mounted between the spaced side frames. The printing unit is provided with an inking unit that includes a roller.
摘要:
A dressing is guided onto a cylinder of a printing machine. At least one roller element is used to accomplish this dressing guidance. A support, which includes spaced first and second ends, is provided. The first end of the support is connected to a cross-piece that is running along parallel to an axis of rotation of the cylinder. The at least one roller element is situated on the second end of this support. The support is an elastically flexible body. An actuator is arranged between the cross-piece and the support. The actuator is operable to move the roller toward or away from the cylinder by flexing the elastic support.
摘要:
A mechanism is used for mounting a dressing on a cylinder of a printing press. The mechanism is fitted with at least one stop which is effective in an axial direction of the cylinder. The stop allows the cylinder dressing to be arranged on the cylinder with pressure in the axial direction. The stop is situated outside of the cylinder.
摘要:
A packing is pressed against a surface of a cylinder by using at least one roller which is deployed and retracted with respect to the cylinder by an adjusting mechanism. A guard is provided for covering the roller. The guard is actuated by the roller adjusting mechanism. The guard covers the roller in the direction of the cylinder and is actuated with the roller.
摘要:
An ink duct for a rotary printing press wherein all or some of the surfaces of the ink duct are permanently coated with a substance which has a low surface energy of between 10 and 60 mN/m. As well as enabling the ink duct to be cleaned easily, the blending of the printing ink is improved owing to the reduced frictional resistance of the coated parts, which in turn leads to more uniform use of the ink-metering roller.
摘要:
An ink duct is used with an ink-metering roller of a printing press. The ink duct includes doctor blades and is shiftable for pivoted movement between a working position and an emptying position with at least one of the doctor blades remaining in contact with the ink-metering roller. When the ink duct is in the emptying position, any printing ink in the ink duct is collected in a very low ink collection channel.
摘要:
Flexible plates are placed on a plate cylinder by inserting leading and trailing plate suspension legs into cooperating slits. Each of the plate suspension legs is pushed into the receiving slit by an insertion device that uses plate front and rear insertion sliders. These two insertion sliders each act as a guide for the adjacent slider.