Web motion converter
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United States of America Patent
Stats
-
Jan 3, 1989
Grant Date -
N/A
app pub date -
Sep 10, 1987
filing date -
Sep 10, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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