Differential integral rotary knife control

Details Differential integral rotary knife control Differential integral rotary knife control

1982-10-18

1985-04-23

Schran, Donald R.

Cutting

Processes

During movement of work past flying cutter

83 71, 83 76, 83298, 318601, B26D 520, G05B 1920

Patent

active

045122253

ABSTRACT:
Motor 17 through gears 15 drives rotary knife 18 to cut continuous wallboard line 10 into predetermined lengths 26. Microprocessor 34 monitors the position of wallboard line 10 by way of roller 28 and pulse generator 30. Microprocessor 34 also monitors the position of rotary knife 18 as measured from a park position by way of pulse generator 36. The position of wallboard line 10 is compared to the distance of travel of knife 18 from the park position and a control signal proportional to the difference in positions is generated to control motor 17 and in turn drive rotary knife 18 to sever a predetermined length 26.

REFERENCES:
patent: 3232157 (1966-02-01), McMath et al.
patent: 4170155 (1979-10-01), Saito et al.
patent: 4255998 (1981-03-01), Rudszinat
patent: 4361063 (1982-11-01), Larson

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