Method for spinning segment color yarn by front area segmentation and drawing mechanism

Abstract

The invention discloses a method for spinning segment color yarn by front area segmentation and a drawing mechanism. The method comprises the following steps of: drawing and feeding a group A and a group B of fiber whiskers of which the linear density tex is Ta and Tb by a rear fixed roller and a rear loose roller which are arranged on the same rear roller shaft into a rear drawing area respectively, and keeping the drawing multiples of the rear area constant and the same, wherein in a front drawing area, the two groups of fibers are different in feeding speed and drawing multiple, and variable in segmentation; outputting by a front roller, adsorbing the group A and the group B of the drawn fiber whiskers to a mesh ring which is sleeved on a negative pressure special-shaped pipe; guiding and conveying by the mesh ring; allowing the fibers to pass through a Y-shaped or V-shaped air groove on the surface of the negative pressure special-shaped pipe; gathering and combining under the air flow adsorption action at the Y-shaped or V-shaped groove; and outputting and twisting by a yarn guide rubber roller to form fine yarn of which combination of different lengths and component ratios or combination of different colors are distributed in the length direction of the yarn.

Description

technical field [0001] The invention belongs to the field of spinning and forming processing, and relates to a segmented color spinning yarn forming method in the front area of ​​a spinning frame, and a device suitable for the yarn forming method of the invention. Background technique [0002] Segment colored yarn is a yarn in which the yarn color is intermittently distributed in the longitudinal direction of the yarn. At present, the color combination and yarn structure of segment colored yarn produced by existing production technology are quite different because of their different production and processing methods. [0003] For segment-colored yarn produced by skein or single-yarn segment dyeing, the fibers in each segment of the segment-colored yarn are basically the same color, and the segment-colored yarn is dull in color and prone to heavy regularity. [0004] Segment-colored yarn produced by blending and re-dying of fibers with different coloring properties has few c...

AI Technical Summary

Problems solved by technology

[0007] Segment colored yarn is spun by coaxial double rear rollers, and the two groups of fibers are segmented, equal in amount, and unequal in proportion to combine into yarn. When the group fibers are changed rapidly or with shorter lengths alternately, the drafting multiple of the front area of ​​the general roller drafting mechanism is larger, and the transition length of the two groups of fibers in the composite structure of A and B is longer between the lengths of the two single components. , cannot be exchanged quickly and short-distance, nor can it accurately control the distribution of the segment color on the length

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