摘要:
The invention relates to a method for controlling a machine processing sheet material. The processing machine has at least one printing or coating group and a cylinder that is coupled to a direct drive and is decoupled mechanically from a main drive acting on a gear train of a plurality of sheet transport cylinders and that can be driven in a given way at least relative to the sheet-guiding cylinders. The cylinder having an associated inking group with an inking group roller that can be driven by the main drive and gear train. Printing contact in a contact zone of the cylinder carrying the printing form with an adjacent rubber blanket cylinder is cancelled for cleaning. The inking group roller of the inking group is separated on a drive side from the sheet transport cylinders driven by the main drive and gear train. The inking group roller is coupled on the drive side to the cylinder carrying the printing form. The inking group roller is driven according to a cleaning program stored in a selection menu for an individual cleaning period at an individual rotational speed by the direct drive.
摘要:
The invention relates to a method and a device for controlling a processing machine for sheet-like material having at least one cylinder that can be driven individually and that carries a printing form. The method involves, inter alia, eliminating the pressurized printing contact between the plate cylinder 10 and adjacent rubber blanket cylinder 8 and for cleaning processes the inking unit rollers are separated on the drive side from the main drive and gear train of the sheet-guiding cylinder 6 and temporarily coupled with the directly driven plate cylinder 10. The plate cylinder 10 and inking unit rollers are driven at a first rotational speed and the rubber blanket cylinder 8 and the adjacent sheet-guiding cylinder 6 are driven at a second rotational speed by the main drive and gear train. After the cleaning process is completed, the temporary drive coupling is separated and the inking unit rollers are coupled with the main drive and gear train and the pressurized printing contact between the plate cylinder and rubber blanket cylinder is re-established.
摘要:
A drive for a sheet-fed printing machine, in particular a sheet-fed offset printing machine is described, in which the individual cylinders and/or drums and the plate or form cylinders are driven by a common drive train. In order to allow automated operations to proceed simultaneously, clutches are arranged in the drive trains of the individual plate or form cylinders and, furthermore, the individual plate or form cylinders are assigned drive motors which can be controlled separately and by means of which the plate or form cylinders can be driven in the intended manner after corresponding disengagement.
摘要:
A drive is provided for a sheet-fed offset printing press having multiple printing units. Each printing unit has printing cylinders which are independently driven. Transfer drums are driven mechanically uncoupled from the printing cylinders, and may be interconnected by a single gear train, or the transfer cylinders of each printing unit may be independently driven by a respective drive. Other rollers in the printing units may have individual controllable drives also. The invention minimizes disturbances caused by load fluctuations in conventional printing presses wherein the printing and transfer systems are mechanically intercoupled. The invention also is cost effective, particularly for register corrections. According to the invention, at least the plate cylinders are driven individually with respect to the sheet-transfer system or the corresponding blanket cylinder.