Back to results
US 9,132,624 B2Granted
Contact pressure adjusting method and contact pressure adjusting apparatus for printing press
AssigneeKomori Corporation
InventorsKenzo Otake, Norihiro Kumagai, Hideki Mori, Hiromitsu Numauchi, Soichi Nakamura
Life of this patent
Estimating the term…
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.
Claims14
A contact pressure adjusting method for a printing press, the printing press including,
- a first rotating body,
- a second rotating body opposed to and making contact with the first rotating body,
- a second rotating body drive motor for rotationally driving the second rotating body,
- a contact pressure adjusting mechanism for adjusting a contact pressure of the second rotating body on the first rotating body, and
- a contact pressure adjusting motor for driving the contact pressure adjusting mechanism,
- the contact pressure adjusting method comprising:
- detecting an electric current value of a motor driver of the second rotating body drive motor, and
- driving the contact pressure adjusting motor in response to the detected electric current value,
- wherein the first rotating body is an intaglio cylinder having an intaglio supported thereon, the second rotating body is a wiping roll opposed to and making contact with the intaglio and supported rotatably, the second rotating body drive motor is a wiping roll drive motor for rotationally driving the wiping roll, and the contact pressure adjusting mechanism adjusts a contact pressure of the wiping roll on the intaglio,
- the contact pressure adjusting method further comprising
- setting the type of a material to be printed, the type of ink, the type of an image, and a material for the wiping roll as printing conditions,
- determining a reference electric current value of the wiping roll driving motor in accordance with the set type of the material to be printed, type of ink, type of the image, and material for the wiping roll, and
- during printing, driving the contact pressure adjusting motor so that an electric current value of the wiping roll drive motor equals the reference electric current value.
10 more elements
A contact pressure adjusting apparatus for a printing press, the printing press including,
- a first rotating body,
- a second rotating body opposed to and making contact with the first rotating body,
- a second rotating body drive motor for rotationally driving the second rotating body,
- a contact pressure adjusting mechanism for adjusting a contact pressure of the second rotating body on the first rotating body, and
- a contact pressure adjusting motor for driving the contact pressure adjusting mechanism,
- the contact pressure adjusting apparatus comprising:
- a control device for detecting an electric current value of a motor driver of the second rotating body drive motor, and driving the contact pressure adjusting motor in response to the detected electric current value,
- wherein the first rotating body is an intaglio cylinder having an intaglio supported thereon, the second rotating body is a wiping roll opposed to and making contact with the intaglio and supported rotatably, the second rotating body drive motor is a wiping roll drive motor for rotationally driving the wiping roll, and the contact pressure adjusting mechanism adjusts a contact pressure of the wiping roll on the intaglio,
- the contact pressure adjusting apparatus further comprising a setting unit for setting the type of a material to be printed, the type of ink, the type of an image, and a material for the wiping roll as printing conditions, and
- the control device determines a reference electric current value of the wiping roll drive motor in accordance with the type of the material to be printed, type of ink, type of the image, and material for the wiping roll set by the setting unit and, during printing, drivingly controls the contact pressure adjusting motor so that an electric current value of the wiping roll drive motor equals the reference electric current value.
7 more elements
Dependencies are inferred from the claim text.