Needle pressing mechanism of hooked-needle warp knitting machine

Abstract

The invention discloses a needle pressing mechanism of a hooked-needle warp knitting machine. The needle pressing mechanism comprises a needle pressing block, a needle-pressing swinging arm and an oil-tank main shaft, wherein the oil-tank main shaft is rotatably arranged in an oil tank of the warp knitting machine; the needle pressing block is fixedly arranged at the upper end of the needle-pressing swinging arm; the lower end of the needle-pressing swinging arm is fixedly connected with a loop-forming swinging shaft of a loop-forming mechanism of the warp knitting machine; the needle pressing mechanism also comprises an eccentric wheel, an eccentric sleeve connecting rod, a triangular rocker and a connecting rod, wherein the eccentric wheel is fixedly arranged on the oil-tank main shaft; the lower end of the eccentric sleeve connecting rod is sheathed on the eccentric wheel, and the upper end of the eccentric sleeve connecting rod is rotatably connected with the lower end of the triangular rocker; the upper end of the triangular rocker is rotatably connected with the lower end of the connecting rod; a rod body of the triangular rocker is rotatably connected with a machine frame of the warp knitting machine; and the upper end of the connecting rod is rotatably connected with a rod body of the needle-pressing swinging arm. The needle pressing mechanism disclosed by the invention has the advantages that not only is the structure simple, but also the needle pressing block has the stopping process at the movement limit position, yarns on a hooked needle can realize looping smoothly, the needle missing phenomenon is avoided, and the quality of the fabric is guaranteed. The needle pressing mechanism is especially suitable for being used on the hooked-needle warp knitting machine.

Description

Technical field [0001] The invention relates to a loop forming mechanism in a knitting mechanism of a crochet warp knitting machine, in particular to a needle pressing mechanism in a loop forming mechanism. Background technique [0002] The existing warp knitting machines are divided into slot needle warp knitting machines, latch needle warp knitting machines and crochet needle warp knitting machines. For the crochet warp knitting machine, the knitting needles are crochet needles. During the looping movement of the crochet needles, when the bar is finished with the yarn, the needle mouth part of the crochet needle must be carried out before looping and unlooping. Squeeze to close the crochet needle opening through elastic deformation to prevent the yarn from slipping into the crochet needle opening, so that the yarn on the crochet needle can be looped smoothly. The mechanism that squeezes the deformation of the crochet needle mouth on the crochet warp knitting machine is the nee...

AI Technical Summary

Problems solved by technology

[0004] like image 3 As shown, the needle pressing mechanism of the existing crochet warp knitting machine adopts the planar eight-bar linkage mechanism to realize the needle pressing action, which uses the characteristic of the connecting rod curve on the primary crank linkage mechanism to control the movement of the needle pressing block. This mechanism is not only complicated in structure , and the needle block does not stop at the movement limit position, which cannot meet the movement requirements of the needle block. Therefore, the effect of the needle pressure is not ideal, and there is a phenomenon of missing stitches, which greatly affects the quality of the fabric.

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