Printing – Antismut device – Anti-offset material application
Patent
1986-08-01
1988-01-19
Eickholt, E. M.
Printing
Antismut device
Anti-offset material application
101223, 101228, 364469, B41F 1354
Patent
active
047198559
ABSTRACT:
Web treatment apparatus, such as a rotary die cutting machine, is provided with a die cylinder position encoder for generating pulses as the die cylinder rotates, feed roll position encoder for generating pulses as the feed rolls rotate; voltage dependent stored program driven servo drive for rotating the feed rolls; pull-off rolls for withdrawing web material from a supply roll and maintaining a storage loop thereof leading to the feed rolls; and a microprocessor based system including manually settable input for inputting the die length and length of pullback desired between cutting cycles. A position controller monitors die cutter speed and position from the die cylinder position encoder and provides voltage signals to the feed roll servo drive dependent upon the inputted data to provide velocity and acceleration profile for the feed rolls appropriate to the entered die length. It also provides a voltage signal to the pull-off roll drive to initialize the rate of input of web to the storage loop. A photocell detector system further adjusts pull-off roll drive speed to maintain the loop within preset limits. To maintain registration control, and to preserve synchronization of the feed roll servo with the die, the die cylinder may also generate a timing pulse on each revolution thereof.
REFERENCES:
patent: 3625147 (1971-12-01), Rubenstein
patent: 4264957 (1981-04-01), Pautzke
patent: 4366753 (1983-01-01), Glantz
patent: 4416200 (1983-11-01), Yon
patent: 4545518 (1985-10-01), Bergland
patent: 4584047 (1986-04-01), Vanderpool et al.
patent: 4592278 (1986-06-01), Tokuno et al.
Cannon David C.
Lyles Stephen P.
Eickholt E. M.
Sonoco Products & Company
LandOfFree
Computer controlled web feed method, apparatus and system for we does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Computer controlled web feed method, apparatus and system for we, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer controlled web feed method, apparatus and system for we will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-367313