Machine drive assemblies

Details Machine drive assemblies Machine drive assemblies

1975-10-16

1977-05-03

Schran, Donald R.

Cutting

With means to monitor and control operation

Including means to correct the sensed operation

83312, 834031, B26D 500

Patent

active

040207226

ABSTRACT:
A continuous web of paper is fed from a reel by a driven roller and a cooperating pressure roller and cut into sheets by a pair of rotating knives. The shafts on which the driven roller and one of the knives are mounted, are drivingly connected by a presettably variable ratio gear box and the drive is obtained from a main motor which is connected to the driven roller shaft. A differential gear is positioned between the main motor and the driven roller, the shafts of which are connected to two of the input/outputs of the differential gear. The casing of the differential gear is connected to an auxiliary motor which is connected to a speed regulator. The speed of the web and the rotational speeds of the driven roller and the knife shaft are monitored and compared with the desired sheet length and a signal indicative of any error between the desired and actual sheet length is used to control the speed regulator.

REFERENCES:
patent: 2070537 (1937-02-01), Matthews
patent: 3128662 (1964-04-01), Obenshain
patent: 3309953 (1967-03-01), Hallden
patent: 3956617 (1976-05-01), Schmidt

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