Vision-Based Foreign Fibre Detection in Spinning
topic
Foreign fibre detection systems in ring and open-end spinning machines use high-speed cameras with polarised or UV illumination to detect differently coloured, reflective, or fluorescent fibre contaminants in the moving fibre sliver or yarn at speeds above 400 metres per minute, triggering yarn cut-and-splice at detected contamination positions to produce contaminant-free yarn packages from contaminated fibre lots that would otherwise cause fabric defects in all downstream products.
Role
Prevents the propagation of fibre contamination from raw material into finished yarn and fabric by detecting and removing contaminant segments during spinning before they are incorporated into the yarn structure, with foreign fibre detection being essential for white and pale-shade spinning production where even small contamination particles are visible in finished fabric and cause significant customer rejection that the contamination-cutting function reduces to acceptable levels.