Fabrication and Evaluation of a Cashmere and Wool Spinning Machine Suitable for Nomadic Areas

The development of electric spinning machine to use in rural and nomadic areas can promote the manufacture of textiles. In this research a cashmere and wool electric spinning machine was fabricated and assessed. For the construction of machine, first the plan was drawn with SolidWorks software and then the parts of machine were fabricated based on developed maps. Machine had 5 parts namely entrance, spinning, spindle, transmission and chassis units. For evaluation of machine performance, the effects of three factors such as rotate speed of spinning unit at three levels (300, 600 and 900 rpm), rotate speed for cashmere spindle unit (25, 50 and 75% of break for collector unit) and the arm's length of spindle at two levels of (100 and 200 mm) based on cashmere yarn breaking percentage, yarn diameter and machine capacity were evaluated. Machine was evaluated based on a completely randomized block factorial design with three replications. The results showed that the effect of rotate speed of spindle and spinning unit on changes of cashmere yarn breaking percent and diameter and speed of spinning unit on capacity were significant at the one percent probability level, but length of spindle had no significant effect. The result also showed that the interaction effect of spinning and spindle unit speed on cashmere yarn breaking and diameter were significant at the level of one percent, while, the interaction of them had no significant effect on studied treatments. Finally, It was concluded that reduction of yarn spindle speed can increase yarn breaking percentage. Thus, treatment L1N1V2 (with specification of arm's length of 200 mm, spindle speed of 25 percent of break for collector unit, and spinning unit of 600 rpm) had the mean yarn diameter of 0.14 mm, least yarn breaking percent (21%) and 9.6 kg per hour capacity, Hence, this treatment was the most suitable as compared to other treatments.