Automated cut-to-mark control for cut-off machine

Details Automated cut-to-mark control for cut-off machine Automated cut-to-mark control for cut-off machine

1981-05-20

1983-04-26

Meister, James M.

Cutting

Processes

During movement of work past flying cutter

83 76, 83288, 83298, 83303, 83372, B26D 534, B26D 536, G05B 1929

Patent

active

043809430

ABSTRACT:
At a transition between first and second sets of registration marks on a web, a target is applied adjacent the initial mark of the second set. The target is sensed and tracked electronically to a shear station. During an order change or a roll-to-roll change within an order, the web is automatically severed transversely by the shear at the transition between the sets of marks, and the target is tracked to a station intermediate the shear and the cut-off machine. The cut-off machine knives "crop" cut the web at the target and thereafter cut the web automatically in synchronization with the second set of marks. Operation of the cut-off machine knives in the cut-to-mark mode is maintained without loss of synchronization across the transition in the web. Operator intervention is eliminated, and scrap is minimized.

REFERENCES:
patent: Re30628 (1981-05-01), Tokuno
patent: 3730810 (1973-05-01), Klein
patent: 3858052 (1974-12-01), Luska
patent: 4170155 (1979-10-01), Saito et al.
patent: 4287797 (1981-09-01), Seragnoli

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