Method and arrangement for controlling the cutting of webs of ma

Details Method and arrangement for controlling the cutting of webs of ma Method and arrangement for controlling the cutting of webs of ma

1990-05-31

1992-03-10

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250557, G01N 2186, G06K 1500

Patent

active

050952196

ABSTRACT:
For the control of a cutting to the correct design length, particularly to the correct print image, of continuously conveyed webs of material by means of a cutter unit, the web of material is provided with a bar code which is detected in contactless manner at least for measuring speed and acceleration by means of a sensor. Each bar of the bar code is converted into a signal which may be multiplied in a signal conversion unit. By this means a high degree of precision of the cutting position is obtained.

REFERENCES:
patent: 3919560 (1975-11-01), Nopper
patent: 4176944 (1979-12-01), Payrhammer
patent: 4600841 (1986-07-01), Tokuno et al.
patent: 4857745 (1989-08-01), Gough
patent: 4877323 (1989-10-01), Stillwagon

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