Rotary knife control

Details Rotary knife control Rotary knife control

1982-09-24

1985-02-05

Yost, Frank T.

Cutting

With control means responsive to replaceable or selectable...

83295, 83298, 83324, 364475, B26D 162, B26D 520, G06F 1546

Patent

active

044972296

ABSTRACT:
A cylindrical, rotating knife is positioned to cut a moving body of flat sheet into predetermined lengths. An electric motor rotates the cylindrical knife. The knife motor is controlled by a system responsive to the travel of the sheet passing under the knife and the rotation of the knife, itself. The two measurements are fed to a control circuit to produce an output analog electrical signal to the knife motor which varies the rotational speed of the knife during the cutting cycle to avoid wastage of the sheet as it is cut.

REFERENCES:
patent: Re30628 (1981-05-01), Tokuno et al.
patent: 3614572 (1971-10-01), Usher
patent: 4183271 (1980-01-01), Martin
patent: 4266276 (1981-05-01), Hayashi et al.
patent: 4283975 (1981-08-01), Knoll

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