Raschel warp knitting machine not using sinkers

Abstract

The invention relates to a Raschel warp knitting machine not using sinkers. The Raschel warp knitting machine is characterized in that a loop forming part comprises a guide needle, a slot needle, a needle core and a knockover bit. The Raschel warp knitting machine is characterized in that the Raschel warp knitting machine can achieve normal knitting, without using the sinkers. The main technical principle of the Raschel warp knitting machine lies in that in a loop forming cycle, the height difference of the slot needle in the back-and-forth process at a same working thread point is smaller than 12mm, so that the ascending and descending yarns have consistent tension and knockover can be smoothly carried out under the condition of not using the sinkers; the circumstances that the yarn tension is too low when the slot needle descends and then an old loop is drawn in a needle hook to be accumulated together with a new loop, thus causing loop accumulation do not exist; the circumstances that the yarn tension is too high when the slot needle ascends and then a fabric is reversely drawn upward and the loop is pulled out of the slot needle, thus causing fabric climbing and then causing failure of normal knitting also do not exist. The warp knitting machine causes low needle loss during loop forming motion, is convenient to operate, is few in broken yarns and neat in jacquard weaves on cloth covers and can effectively avoid the problems of broken yarns, raised yarns, and the like caused by the sinkers, thus effectively increasing the working speed of the machine.

Description

[0001] Technical field: [0002] The invention relates to the field of textile machinery, in particular to a Raschel warp knitting machine without sinkers. [0003] Background technique: [0004] The main mechanism of the warp knitting machine includes a loop forming mechanism, a warp let-off mechanism, a guide needle traverse mechanism, a pulling and winding mechanism, and a transmission mechanism. Wherein the knitting mechanism is a mechanism that forms warp yarns into loops that are intertwined with each other to form warp knitted fabrics. The main knitting parts are grooved needles, needle cores, strippers, sinkers and guide needles. The knitting process is the result of the interaction of grooved needles, needle cores, knockers, sinkers and guide needles. [0005] All the warp knitting machines on the market now use sinkers. The function of the sinker is to press the old coil so that it does not rise together with the slot needle when the slot needle rises. The slotted ...

AI Technical Summary

Problems solved by technology

In the knitting mechanism of the warp knitting machine, the slotted needle must be located in the center of the sinker gap, and the sinker must be accurately located in the center of the slotted needle gap. easily damaged

Because the sinker is easy to touch the needle during the yarn pressing process, the number of yarn breakages is high, and even the yarn is damaged, the probability of yarn breakage is high, and the operation of the fitter is difficult. The most important thing is that the woven fabric surface will be fluffy and uneven.

[0007] In the existing improved technology, a lug is provided on the lower end structure of the front part of the sinker, a guide groove is formed above the lug, and a groove is provided below the sinker groove on the needle cylinder so that the sinker will not float, but Since the lint, cotton wool and other debris produced by the yarn during interweaving will be deposited in the groove below the sinker groove, the accumulated debris will hinder the movement of the sinker in the groove. It is necessary to stop the machine to remove the lint and other sundries produced by the interweaving of yarns, which not only affects the work efficiency, but also takes a lot of time and labor, which makes the quality of the produced fabrics poor

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