Multi-thread yarn feeding method and device for a magnetic levitation circular knitting machine

Abstract

The invention discloses a multi-line yarn delivery method and device of a magnetic suspension circular knitting machine. The device is improvement of a yarn delivery device in the invention patent 'double-layer magnetic suspension direct-drive knitting jacquard knitted fabric circular knitting machine' (ZL2001510515739.0). The multi-line yarn delivery method device comprises a yarn paying-off mechanism, yarn delivery device mechanisms and a yarn divider mechanism, yarn is separated out of yarn reels, is taken up by yarn delivery devices, and is delivered to a weaving mechanism through a yarn divider, the paying-off mechanism gently pays the yarn twined on the yarn reels downwards to be supplied for twining, the yarn divider mechanisms temporarily twine the yarn which is paid off from the yarn reel paying-off mechanism, the effects of buffering paying off, tensioning yarn and guiding yarn are achieved, and the yarn divider mechanism divides the yarn delivered by the six yarn delivery devices, and delivers the yarn to yarn hooking positions of the magnetic suspension circular knitting machine to be woven; three-level yarn delivery mechanisms are distributed in vertical gradients in the vertical direction, and are horizontally spaced in the radial direction. By means of the multi-line yarn delivery method and device of the magnetic suspension circular knitting machine, the yarn delivery efficiency and the production efficiency of the circular knitting machine are greatly improved; meanwhile, the complicated control problems also become simple, and the mechanism of the circularknitting machine is simple and compact.

Description

technical field [0001] The invention relates to a multi-thread yarn feeding method and device for a magnetic levitation circular knitting machine, in particular to a multi-thread yarn feeding method and a multi-thread yarn feeding device for a double-layer magnetic levitation direct-drive knitting needle knitting jacquard circular weft machine, It belongs to the technical field of textile machinery in the textile industry. Background technique [0002] The double-layer magnetic levitation direct drive knitting needle circular knitting machine uses electromagnetic force to drive the knitting needle to move up and down to complete the whole knitting process. Compared with the traditional triangular cam drive mechanism of the knitting jacquard circular knitting machine, this direct drive method can save The mechanical transmission link in the middle is removed to realize "zero transmission" in the needle selection process, and there will be no rigid impact, friction and wear, e...

AI Technical Summary

Problems solved by technology

[0003] (1) At present, only one pair (i.e. two) of yarn feeding drums can be arranged, and the two yarn feeding drums are symmetrically arranged, and each is installed at a certain angle, which cannot realize multi-thread yarn feeding and cannot meet the requirements of weaving diversity

[0004] (2) The yarn feeder is installed on a planetary gear mechanism. The yarn feeder must not only revolve with the yarn feeder, but also rotate on its own. Therefore, two independent drive units are required, and joint control between the two drive units is required. More complex and less precise in coordinated movements

[0005] On the other hand, the yarn feeder mechanism of the old-fashioned bobbin pay-off mechanism is symmetrically arranged in a plane, connected and driven by connecting rods, and the bobbin unwinding mechanism needs a set of stepping motor drive unit to drive the bobbin to rotate continuously , and the yarn feeder needs to be driven by another set of stepping motor drive unit, which drives a set of planetary gear mechanism to rotate through the synchronous belt, and the planetary gear mechanism drives the yarn feeder to rotate, during which the yarn The position of the barrel pay-off mechanism needs to be detected to compensate for each revolution, which not only requires two additional drive units, but also requires real-time detection, and the structure is complex

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