Multi-axial yarn structure forming machine

Abstract

In forming a multi-axial yarn structure a bias yarn assembly forming device makes use of cooperating yarn guide and yarn transfer members having yarn guide elements defining guide and transfer openings which hold warp yarns spaced apart in the weft direction. Warp yarn transfer from an opening in one member to an opening in the other member is facilitated by providing the guide elements of the two members with cooperating complementary salient and re-entrant inclined end portions. Furthermore, a yarn diverter blade extends from the end portion of each guide element of one of the members to hold the transferring yarns away from the junctions between the cooperating end portions of the guide elements. To facilitate insertion of binding warp yarns two sets of yarn guide and yarn transfer members are provided to hold the yarns spaced apart to form binding warp yarn insertion zones between the two sets. A yarn beat-up member carries out successive beat-up cycles in cooperation with a yarn engagement transfer member which assists the beat-up member during the beat-up cycle.