Jacquard griffe made of three-dimensional multilayer profiling woven fabric, preform and manufacturing method

Abstract

The invention discloses a jacquard griffe made of three-dimensional multilayer profiling woven fabric, a preform and a manufacturing method. A three-dimensional multilayer griffe profiling preform is manufactured by a weft vertical yarn method; vertical yarns at a relatively thin part in the middle of the griffe are a whole penetrating through the whole layer thickness, and the vertical yarns at two sides of the griffe are processed to only penetrate through 1 / 2 of the layer thickness, in this way, the griffe preform with two thin walls which can be divided from the middle and an overall thick wall in the middle is formed, and therefore the required griffe section can be formed through a mold when a resin material is poured to be cured and formed. According to the jacquard griffe, the effects of saving materials and reducing cost are achieved, and the reinforced fibers at the knife edge position keep a filament state penetrating through the workpiece, so that the effect of the reinforced fibers is fully exerted. Due to the three-dimensional orthogonal fiber distribution of the three-dimensional weaving and the very high weaving compactness, the composite material forming scheme is superior to other composite material forming schemes. Compared with an original aluminum alloy griffe, the composite griffe manufactured through the method is light in weight, low in manufacturing cost and high in deformation resistance.

Description

technical field [0001] The invention belongs to the field of shedding devices used for weaving equipment in textile machinery, and in particular relates to a jacquard girdle, a prefabricated body and a manufacturing method made of three-dimensional multilayer profiling woven fabrics. Background technique [0002] The electronic jacquard machine is an important shedding device of the current weaving equipment. In the structure of the electronic jacquard machine, such as figure 1 The working method of the lifting knife shown is that the power device drives the lifting knife to reciprocate up and down through the transmission device, and a lifting needle is hung on the upper edge (also called the knife edge) of the lifting knife, and the lifting needle is connected with the harness and heddle to drive The warp thread worn in the eyes of the heald reciprocates up and down. Each heddle is connected with a return spring. The initial tension of the commonly used return spring is ...

AI Technical Summary

Problems solved by technology

but if figure 1 As shown, the cross-section of the gib is a structure with a thin center and thick sides. There are usually two production methods for this cross-sectional shape: one is to make a thick flat plate, and then remove the excess part in the middle, but this method removes part of the warp and weft yarns. Second, when weaving, only the warp yarns are arranged according to the cross-sectional shape, and the weft yarns become floating yarns where there are no warp yarns, which can be removed afterwards. Although this scheme saves the warp yarns, the weft yarns are still wasted.

The main force of the lifting knife is on the edge of the knife. In the edge of the knife, the reinforcing fibers in the force-bearing direction of these two manufacturing schemes become shorter fibers, and neither can maximize the effectiveness of the reinforcing fibers.

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