Flattened carbon yarn twistless laying-in system applicable to multiaxial warp knitting equipment

Abstract

The invention relates to a flattened carbon yarn twistless laying-in system applicable to multiaxial warp knitting equipment, comprising a yarn reversal device and a weft laying-in device; the weft laying-in device is disposed at the front end of the yarn reversal device. Pneumatic-electric sensing combined grating and digital signal processing control are fitted to the movement of the flattened carbon yarn twistless laying-in apparatus sensing the whole multiaxial warp knitting equipment. The mutual sensing of a convex stepped creel in the yarn reversal device, the yarn reversal device and a tension device not only narrows the gaps among the flattened carbon yarns unwinded from the creel, and but also maintain uniform tension for carbon yarns; an angle rack and a controller in the weft laying-in device convey the flattened carbon yarns and also promote further uniform distribution of tows, keeping the uniform width of the flattened carbon yarns and keeping them twistless and free of abrasion and other defects, the flattened carbon yarns are maintained uniform in tension and low in gap rate, and therefore, the multiaxial warp knitting equipment can produce multiaxial fabric with less density and smaller thickness.

Description

Technical field [0001] The invention relates to the field of textile high-performance fiber weaving machinery, in particular to a non-twistless interlining system for flattening carbon yarns applied to multi-axial warp knitting equipment. The lining system effectively solves the research and development problems of new products, and has the development concept of strong practicability, wide adaptability, strong operability, and meeting scientific innovation. Background technique [0002] Multi-axial warp knitted fabrics are currently the most pre-designed reinforcing material structure, and as the performance requirements of composite materials increase, its weaving technology is also changing day by day. Especially for carbon fiber multi-axial fabrics, it is moving towards thinner and lighter trends. In most cases, carbon fiber is a non-twisted yarn, which is a filament yarn composed of many monofilaments. Before weaving by a multiaxial warp knitting equipment, the carbon fiber...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art that the flattened weft-inserted yarns of carbon fiber multi-axial warp-knitted fabrics are easy to twist, fluff,

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