Abstract:

This paper introduced the existed technology of ranks unit increase or decrease yarn and the entire line or the whole column increase or decrease yarn and the machine equipment which can realize increasing or decreasing yarn in the 3D variable cross-section prediction braiding for reducing the three-dimensional braiding human involvement in the process, improving the degree of automation and the three-dimensional woven weave efficiency. The advantages and disadvantages were compared in existing variable cross-section weaving technology and equipment. This paper putted forward a new yarn carrier which can automatically achieve increasing or decreasing yarn using the physical property of liquid nitrogen and combining with the blade shearing action through wireless control. This paper described the function of various functional modules and the working process of increasing or decreasing yarn combined with the design drawing and illustrated the use of the new type carrier for weaving process. In addition, it pointed out that the application of this new type yarn carrier and the weaving process would greatly improve the flexibility of variable cross-section weaving which has broad application prospects.

Key words: 3-D variable cross-section braiding, yarn increase or decrease technology, liquid nitrogen, wireless control, yarn carrier