Crochet hook for stably implanting Z-direction fiber into composite material prefabricated body

Abstract

The invention provides a crochet hook for stably implanting Z-direction fiber into a composite material prefabricated body. The crochet hook comprises a Z-direction fiber closing plate, a return spring, a connecting shaft, a magnet and a crochet hook notch, wherein the Z-direction fiber closing plate is connected with a crochet hook rod through the connecting shaft, the stability of the closing plate is kept by the return spring, and the front end of the crochet hook rod is designed into a notch shape. During work, the closing plate rotates along the rotating shaft under the action of thrust of array steel needles, the closing plate tilts to the position where the Z-direction fiber is hooked, after the Z-direction fiber is hooked, the closing plate returns to an initial balance position under the action of the return spring, and the magnet is installed in the crochet hook notch and used for being attracted to the closing plate to keep the notch in a closed state. In the process of implanting the Z-direction fiber into the composite material prefabricated body, the Z-direction fiber can be effectively protected through such designed device, abrasion of the Z-direction fiber, the prefabricated body and metal, and deviation of the Z-direction fiber are avoided, and the forming quality of the prefabricated body is improved.

Description

technical field [0001] The invention relates to auxiliary equipment in the three-dimensional weaving process, and relates to a crochet hook needed for stably hooking yarns during the process of introducing Z-direction fibers into a composite material prefabricated body. Background technique [0002] Composite components are widely used in aerospace, military and other fields, so the requirements for the structure and performance of composite materials are also increasing. Compared with two-dimensional structure, composite components with three-dimensional structure introduce reinforcing fibers in the Z direction, which improves the composite structure. The interlayer strength in the thickness direction of the three-dimensional fabric of the material solves the problems of easy delamination of composite material components, low impact toughness and damage tolerance. The woven three-dimensional fabric still has an array of steel needles formed in a certain regular shape in the...

AI Technical Summary

Problems solved by technology

The traditional device for implanting Z-direction fibers into composite material preforms is likely to cause fiber deviation and friction between fibers and preforms, fibers and metal hooks, which reduces the efficiency and quality of Z-direction fiber introduction. Therefore, it is necessary to design a New crochet hook to achieve high-quality and efficient implantation of Z-direction fibers

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