Abstract
In order to study the fluctuation of yarn tension in the process of track-change interlocking braiding, the track-change interlocking mechanism and carrier motion process are taken as examples. The structure of carrier and yarn release process are analyzed to establish the equation of motion of yarn in the process of track-change braiding, and the theoretical value of yarn tension is obtained. Then the yarn tension in the track-change process is simulated in MATLAB simulation software. In order to verify the accuracy of the mathematical model, the yarn tension experiment is carried out. The box plot method is used to process the measured experimental data to deal with the outliers and optimize the yarn tension. After optimization, the maximum value of yarn tension was reduced by 8.42% and the minimum value of yarn tension was reduced by 4.67%. Reducing yarn tension during the braiding process can improve the uniformity of fiber distribution on the mandrel, avoid yarn pile-ups and gaps caused by sudden changes in yarn tension, and improve the mechanical properties after molding.
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