Picking on Water Jet Loom

Part 2 : Experiment on Weft Insertion

Abstract

An experiment has been made to determine the weft velocity and hydraulic pressure in weft insertion. The experimental observation has analyzed the factors affecting on the time required for weft insertion and the behaviour of flying yarn. Using the weft tension caused with the jet of air, the equation of flying motion of a weft yarn has been derivec, through which the weft velocity (W), insert length (X), time required for weft insertion (t) and force applied on weft end caused with jet of air (T) have been calculated. These calculated values coincide well with the experimental values. It is concludad that the greater the difference between weft velocity and jet velocity around the flying weft, the more stable the weft insertion.