Weft yarn cutting device of warp knitting machine

Abstract

The invention relates to a weft yarn cutting device of a warp knitting machine. The weft yarn cutting device comprises a bottom block, a mounting rod arranged on the bottom block, an upper blade arranged above the bottom block and sliding in the vertical direction, an upper-blade driving mechanism arranged on the mounting rod and driving the upper blade to move in the vertical direction, a lower blade slidably connected to the bottom block in the vertical direction and matched with the upper blade to cut weft yarn, a lower-blade driving mechanism driving the lower blade to move in the verticaldirection and a clamping mechanism arranged on the bottom block and capable of clamping the weft yarn. According to the cutting device, the clamping mechanism comprises two upper clamping blocks which are arranged on the upper-blade driving mechanism and are spaced from each other and lower clamping blocks which are arranged on the bottom block and are correspondingly matched with the upper clamping blocks to clamp the weft yarn, the cross sections of the two sides of the upper blade and the lower blade are located between the two upper clamping blocks and between the two lower clamping blocks respectively, and the cutting device has the effect that the upper-blade driving mechanism drives the two upper clamping blocks to move downwards to abut against the weft yarn, then the upper bladeand the lower blade cooperate to cut the weft yarn, so that the effect of poor weft yarn cutting quality is avoided.

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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