Study on how to braid preform with special-shaped sections by braiding machine

What is it about?

In this paper, a method for designing a two-dimensional (2D) braiding machine to braid preforms with special-shaped cross-sections is proposed. By means of splicing the running tracks of a traditional flat braiding machine’s carriers, the 2D braiding machine can produce various structures with special-shaped cross-sections such as thin-walled cross-shaped, Hshaped, U-shaped, and T-shaped cross-sections, greatly expanding the application of 2D braiding. This paper studies the collisions of carriers after track splicing, dividing the collision problem into two categories, and putting forward a method to analyze whether the carriers collide. The judging method can not only verify whether there are collisions between carriers but also guide designers to change the layout of horn gears to avoid collisions. The mapping relation between the common arrangements of the carriers and the number of slots of the horn gears is also summarized, providing a theoretical basis for a future customized 2D braiding machine according to the practical needs.

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Why is it important?

Special section preform is important for making textile composites which are widely used to substitute metal sections