Web motion converter

Details Web motion converter Web motion converter

1987-09-10

1989-01-03

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

'feelback' systems

318135, 318593, 318 6, 198805, 364469, G05B 1101

Patent

active

047959568

ABSTRACT:
A motion converter is disposed at the input to a work station to convert the constant velocity of sheet material as it is payed out from a roll into a cyclic, stop and go motion. The motion converter includes a pair of actuators containing electromagnets and these are alternately energized to attract the sheet material first against a contoured surface and then a flat surface. Sheet material accumulates in a serpentine path within the motion converter when attracted toward the contoured surface and it is expelled rapidly therefrom when attracted toward the flat surface. A programmed position control operates the electromagnets in response to position feedback signals from sensors on the motion converter.

REFERENCES:
patent: 2684753 (1954-07-01), Kolbe et al.
patent: 3890547 (1975-06-01), Keck
patent: 3983467 (1976-09-01), Borrons et al.
patent: 4704568 (1987-11-01), Beck et al.

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