Title:
METHOD AND APPARATUS FOR CONTROLLING SYNCHRONIZED PHASES IN SYSTEM FOR DRIVING PRINTING ROLLS FOR CORRUGATED BOARD PRINTING MACHINE
Document Type and Number:
WIPO Patent Application WO/1992/001562
Kind Code:
A1
Abstract:
The present invention relates to a technical field pertaining to control of synchronized phases between a plurality of printing rolls in a corrugated board printing machine. An object of the present invention is to realize the control of synchronized phases inexpensively and highly accurately by use of software. According to the present invention, speed commands inputted at regular intervals are converted into digital values and integrated, rotations of the rolls are respectively integrated, further, PI operations are conducted on the deviations of these integrated values, and corrections based on the results of the PI operations are respectively applied to rotational speed commands given to driving motors of the printing rolls. At this time, during the processes of integrations of the speed commands and the rotations of the respective printing rolls, when the upper limit values of the operations are exceeded, the values are to be returned to zero, respectively, and the operations are to be continued.
Inventors:
IKEGUCHI MASAO (JP)
Application Number:
PCT/JP1991/000963
Publication Date:
February 06, 1992
Filing Date:
July 19, 1991
Export Citation:
Assignee:
YASKAWA DENKI SEISAKUSHO KK (JP)
HAMADA PRINTING PRESS (JP)
HAMADA PRINTING PRESS (JP)
International Classes:
B41F33/08; B41F13/004; B41F13/14; B65H23/188; H02P5/52; (IPC1-7): B41F33/08; G05D13/62; H02P5/00
Foreign References:
| JPS60250955A | 1985-12-11 | |||
| JPS5571188A | 1980-05-29 |
Other References:
See also references of EP 0495987A4
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