After analyzing the relationship between the puller roller system and the yarns pulled in a carpet
Tufting machine a conclusion is got that the working principle of the puller roller is close to non—extrusion pulling by several slim rollers. In succession, the stabilization method is proposed to the puller roller system for tensioning a series of yarns, through theoretical reduction and illustrated analysis, a result is achieved that as well as the decrease of the tension’s mean value in times of e. The mean-squared eviation is decreased in times of e, so that the fluctuation range of the output tensile force of yarn passing through the puller rollers is sharply decreased．It is also proved that the area of contact between the yarn and the puller roller will be changed by adjusting the spacing between the puller rollers and consequently the yarn tension can be accurately adjusted.
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