Device for detecting neps in carded fibrous textile material

摘要

The device produced by means of a lighting device (12-14) and an optical system (16) from the card web (1) an optical image on an array of photo sensors (17). With a sufficiently small area of ​​the sensor caused by Nissen time profile is the illumination intensity for this chrakteristisch and used for their detection. The nits are not removed ent, but their frequency is evidence of possible defects on the card or the upstream machines for fiber resolution.