Abstract:
A contact pressure adjusting method and a contact pressure adjusting apparatus for a printing press, which can adjust a contact pressure automatically and always highly accurately without the influence of mechanical oscillations (disturbance such as noise), are provided. For this purpose, the contact pressure (load) of a wiping roll on an intaglio cylinder is converted into the torque value (electric current value) of a wiping roll drive motor, and given as feedback to a wiping roll contact pressure adjusting motor.
Abstract:
Disclosed herein is a doctor blade apparatus, including a printing cylinder; a pre-wipe removing a portion of ink applied to a surface of the printing cylinder, while being spaced apart from the surface of the printing cylinder; and a blade removing the ink applied to the surface of the printing cylinder, while being in contact with the surface of the printing cylinder, whereby a life span of the blade can be remarkably improved and work suspension due to replacing the blade can be minimized. Furthermore, abrasion of the printing cylinder generating friction with the blade can be minimized, such that the entire lifespan of printing equipment can be improved.
Abstract:
A doctor blade system with clamping device is provided for clamping a doctor blade, for example, in a doctor blade chamber without using screws and without having to use tools. A clamping mechanism, preferably pneumatic, counteracts the clamping by actuation. By disposing a sectional rail between the clamping rail and the doctor beam, the sectional rail drawing the clamping rail and the beam together with a spring mechanism, the doctor blade is clamped between the clamping rail and the beam. In another embodiment, the clamping rail is designed as an angular section tipping about an edge.