A weft cutting device for a warp knitting machine

Abstract

The invention relates to a weft yarn cutting device of a warp knitting machine, which comprises a bottom block, a mounting rod arranged on the bottom block, an upper blade disposed above the bottom block and sliding along the vertical direction, and an upper blade disposed on the mounting rod The upper blade driving mechanism that moves in the vertical direction, the lower blade that is slidably connected to the bottom block in the vertical direction and cooperates with the upper blade to cut the weft yarn, the lower blade driving mechanism that drives the lower blade to move in the vertical direction, and is located at the bottom block and can clamp the weft yarn, the clamping mechanism of the present invention includes two upper clamping blocks arranged on the upper blade drive mechanism with a distance between them, one located at the bottom block and correspondingly matched with the upper clamping block The lower clamping block for weft yarn clamping, the cross-sections on both sides of the upper blade and the lower blade are located between the two upper clamping blocks, and the upper blade driving mechanism drives the two upper clamping blocks to move down to hold the weft yarn The upper blade and the lower blade cooperate to cut the weft yarn to avoid the effect of poor cutting quality of the weft yarn.

Description

technical field [0001] The invention relates to a warp knitting machine, in particular to a weft yarn cutting device of the warp knitting machine. Background technique [0002] With the continuous development of science and technology, people's requirements for fabrics are getting higher and higher, and multi-axial warp knitted fabrics have tensile and shear resistance properties in all directions, and are light in weight, smooth in surface, resistant to corrosion, and easy to paint. It is widely used as various types of industrial fabrics such as filtration and reinforcement, and as the base fabric of textile composite materials in various high-tech materials such as aviation and aerospace. Multiaxial warp knitted fabrics are mainly The machine is used for production, and one of the important components of the multi-axial warp knitting machine is the weft laying device that connects the weft yarn and the weft needle to ensure that the weft yarn can move together with the co...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned technical scheme first presses the weft yarn to the lower clamper through the upper clamper, and then the upper blade and the lower blade cooperate to cut the weft yarn, but in the cutting process, the upper clamper only presses the upper blade and the lower blade The weft yarn on one side is clamped, and the weft yarn on the side of the upper blade away from the upper clamper is not restricted during the cutting process, which will easily affect the quality of weft yarn cutting

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