Device and method for positioning the sensors of a web movement

Details Device and method for positioning the sensors of a web movement Device and method for positioning the sensors of a web movement

1994-04-25

1995-08-15

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250557, 25055932, 356400, G01N 2186

Patent

active

054421870

ABSTRACT:
To reach an originally set web position again with a web movement control device following a tear in the web and renewed drawing-in of a web of material, sensors which can be adjusted independently of one another and coupled such that two sensors move synchronously in opposite directions are provided. During an edge search, the two sensors can be adjusted separately and independently of one another and moved synchronously in opposite directions for centre control after a tear in the web for repositioning the sensors.

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Von Dipl.-Ing. R. Burlefinger et al., "Electronische Bahnlaud--Regler mit Programmierbarer Logik," Paper + Kunststoff-Verarbeiter, vol. 10, 1982, pp. 22 and 23.

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