Influence of linear density of yarn on weft flight speed and weft status of Dornier air-jet loom

In order to discuss the relationship between linear density of yarn and weft insertion flight state on Dornier air-jet loom and provide technological base to optimize the process of weft insertion,this paper used a Dornier AWV8/S air-jet loom as the experimental platform and the actual state of weft flight across the shed was taken using a high-speed camera system.Then the professional image analysis software-Image Pro-Plus 6.20 was used to analyze the images of the weft insertion flight state and average speed,acceleration and vertical fluctuation distance of wefts with different linear densities were obtained.The results show that the speed and acceleration of the yarns with the same material increase with the decreasing of yarn linear density under the same weft insertion condition.And less the linear density of yarn,more stable the flight state of the yarn.Besides,when 10 tex cotton yarns were used for weaving,the weft possessed high flight speed and small fluctuations.So this air-jet loom has good weft motion state in such situation.