Dual-channel hollow spindle fancy yarn forming device and method

Abstract

The invention provides a dual-channel hollow spindle fancy yarn forming device and method. The yarn forming device includes a first channel, a first auxiliary channel, a second auxiliary channel and afixed yarn channel; three front rollers on the channels can rotate relatively; first component yarn and second component yarn are intertwisted at the first twist point to form a fancy yarn main body;a hollow spindle is arranged at the second twist point, the fancy yarn main body passes through the hollow spindle, the hollow spindle rotates rapidly, and fixed yarn on the hollow spindle intersectswith the fancy yarn main body to coat the fancy yarn main body. The device and the method achieve one-step spinning of the fancy yarn, by regulating the speed of feeding decoration yarn and heart yarn into the twist points, regulating the density and blending ratio of the decoration yarn, regulating the twist degree of the heart yarn, regulating switching of the heart yarn and the decoration yarnand other technical means, on-line change of the colors and forms of the bamboo joints, bellies, joints, knots and braids of the fancy yarn is achieved, and new varieties of fancy yarn can be developed.

Description

technical field [0001] The invention relates to the technical field of spinning in textile engineering, in particular to a double-channel hollow spindle fancy yarn forming device and method. Background technique [0002] The production of fancy yarns on hollow spindle spinning machines usually adopts a two-step method. In the first step, the core yarn, decorative yarn and fixed yarn are spun separately; in the second step, the core yarn fed at different speeds is False-twisting of the decorative yarn, through the overfeeding of the decorative yarn to the core yarn, the decorative yarn is twisted on the core yarn to form knots, circles, braids and other patterns, and then the fixed yarn unwound from the hollow spindle is used to wrap the The formed flower knot is fixed to form a hollow spindle fancy yarn. The main problems in the production of fancy yarns on hollow spindle spinning machines are as follows: [0003] 1) The color change of the fancy yarn cannot be controlled ...

AI Technical Summary

Problems solved by technology

[0003] 1) The color change of the fancy yarn cannot be controlled when the hollow spindle is spinning the fancy yarn: In order to realize the color change of the fancy yarn, one is to control the mutual wrapping relationship of the decorative yarn, the core yarn and the fixed yarn, and the other is to control the color change of the fancy yarn. Control the color of the decorative yarn

The traditional hollow spindle spinning machine still lacks the means to control the intertwining relationship of decorative yarn, core yarn and fixed yarn in the production of fancy yarn, and it is also unable to control the color of decorative yarn, so it is impossible to control the change of fancy yarn color;

[0004] 2) The size and color of knots, loops, and braids cannot be controlled when hollow spindles spin fancy yarns: hollow spindle fancy yarns contain three components (core yarn + decorative yarn + fixed yarn), of which decorative yarn It is the main body to form fancy knots, loops, and braids. The traditional hollow spindle spinning machine cannot control the thickness and color changes of decorative yarns online, so it is impossible to control the size and color changes of knots, loops, and braids;

[0005] 3) The combination of the core yarn and the decorative yarn cannot be adju

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