Cutting – Operation controlled by detector means responsive to work – Positioning of tool controlled
Patent
1974-10-03
1976-05-11
Yost, Frank T.
Cutting
Operation controlled by detector means responsive to work
Positioning of tool controlled
83 72, B26D 504
Patent
active
039554546
ABSTRACT:
A moving web or sheet of material in which an operation is to be performed, such as punching of a hole, is advanced past a pneumatic edge position sensor which is mounted on a carriage for movement transversely toward and away from the edge of the web. The movable carriage also supports the mechanism which is to perform the particular operation (e.g., a hole punching device) and a pneumatic cylinder is connected to the carriage to effect its movement toward or away from the edge of the web to follow any lateral displacement of the web. Operation of the motor is controlled in response to a change in position of the edge of the moving web with respect to the edge position sensor by a pneumatic control system which provides an immediate operation of the motor in response to the sensor and without a hunting tendency.
REFERENCES:
patent: 3400624 (1968-09-01), Holm
patent: 3664223 (1972-05-01), Brocklehurst
patent: 3741060 (1973-06-01), Owen
patent: 3753381 (1973-08-01), Reime et al.
patent: 3803961 (1974-04-01), Valente
Goldman Rubin
Yost Frank T.
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