Needle-pressing mechanism for warp-knitting machine

Abstract

The invention discloses a needle-pressing mechanism for a warp-knitting machine. The needle-pressing mechanism comprises a transmission main shaft, a jacquard needle bed, a jacquard needle-pressing assembly, a push needle, a push need guide block and a bearded needle. The transmission main shaft drives the push needle to perform reciprocating motion by means of a push needle movement mechanism in order to open and close the bearded needle so that knitting in loops is finished. The push needle movement mechanism comprises an eccentric wheel, an eccentric sleeve connecting rod, a first connecting rod, a second connecting rod, a first triangular connecting rod, an oil tank output rod, a second triangular connecting rod, a third connecting rod, a push needle shaft and a guide seat. The left end of the second connecting rod is rotatably connected with the right upper end of the first triangular connecting rod. The left upper end of the first triangular connecting rod is rotatably connected with the lower end of the oil tank output rod. The upper end of the oil tank output rod is rotatably connected with the left upper end of the second triangular connecting rod. The push needle shaft is arranged along a horizontal direction. The right end of the push needle shaft is rotatably connected with the left end of the third connecting rod. A shaft body of the push needle shaft penetrates through the guide seat and is slidably connected with the guide seat. The needle-pressing mechanism for the warp-knitting machine helps to improve looping quality and prolongs service lifetime of the jacquard needle-pressing assembly.

Description

technical field [0001] The invention relates to a knitting mechanism of a warp knitting machine, in particular to a needle pressing mechanism in the knitting mechanism of a warp knitting machine. Background technique [0002] The existing warp knitting machine needle pressing mechanism includes a transmission main shaft rotatably installed in the oil tank of the warp knitting machine, a jacquard needle bed, a jacquard needle pressing assembly, a push needle, and a push needle guide block for guiding when the needle moves , and the crochet needles fixedly installed on the crochet needle bed; the jacquard needle pressing assembly is mainly composed of a base, a piezoelectric ceramic sheet installed on the base, a push needle piece and a wire, and the base is fixedly installed on the jacquard needle bed , on the base, there are several grooves arranged in parallel at a certain distance from each other, one push pin is embedded in each groove, and the push pin guide block is fix...

AI Technical Summary

Problems solved by technology

[0003] The needle pressing mechanism of this structure has the following two disadvantages when it works: (1) Since the Jacquard needle bed, the Jacquard needle pressing assembly and the back and forth reciprocating motion of the push needle are carried out by the connecting rod in the push needle movement mechanism It is realized by a small swing, which is an approximate linear motion, which is easy to cause needle injection or missed needles, thereby reducing the quality of knitting in a loop; Unable to maintain a parallel state all the time, the two are in a state of line contact most of the time, and the position of the contact is always changing, causing the groove to be easily worn by the push pin, thus shortening the service life of the jacquard press pin assembly

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