Rotating printing machine

Details Rotating printing machine Rotating printing machine

1997-02-07

1998-06-30

Burr, Edgar S.

Printing

Rolling contact machines

Rotary

101183, 101216, B41J 1314

Patent

active

057718059

ABSTRACT:
A rotating printing machine comprises several printing stations with each station having a printing form cylinder being driven directly by an asynchronous vectorial electric motor controlled by an electronic circuit for monitoring and control of the angular position at a command value that changes over time and is received from a electronic calculating station for the synchronization of the stations with one another. Each of the printing cylinders has an axle connected to the axle of the rotor of the adjacent motor and the axle of the cylinder and motor can be moved in an axial translation for the correction of lateral registration of the printing forms of the cylinder. The machine includes an arrangement that reads the registration marks printed by each station and establish the possible lateral and longitudinal registration errors for each station, each lateral error is applied to the electrical control circuit of the electrical motor of the corresponding station to control the axial position of the common axle of the cylinder and rotor assembly and each longitudinal error is added directly to the cylinder position command of the corresponding station.

REFERENCES:
patent: 3742850 (1973-07-01), Sedlak
patent: 4137845 (1979-02-01), Jeschke
patent: 4414898 (1983-11-01), Westerkamp et al.
patent: 4484522 (1984-11-01), Simeth
patent: 4604083 (1986-08-01), Barny et al.
patent: 4606269 (1986-08-01), Jeschke et al.
patent: 4709634 (1987-12-01), Momot et al.
patent: 4782752 (1988-11-01), Etchell
patent: 5092242 (1992-03-01), Knauer
"SYNAX--Decentralized system for synchronizing machine axes" Mannesmann Rexroth Catalog No. 71-201 IEN, Sep. 1994 and No. 71 201 IDE, Sep. 1994.

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