A spinning device based on improved ring spinning and used for auxetic composite yarn with a uniform wrapping angle

Abstract

The invention relates to a spinning device based on improved ring spinning and used for auxetic composite yarn with a uniform wrapping angle. The composite yarn is formed through spiral wrapping of core yarn and wrapping yarn at a certain diameter ratio and modulus ratio. The spinning device comprises a yarn supply mechanism, a drafting mechanism, and a twisting and winding mechanism and is characterized by further comprising a yarn feeding control mechanism and a wrapping angle control mechanism which are added on the basis of a traditional ring spinning machine, wherein the yarn feeding control mechanism comprises a core yarn feeding control mechanism and a wrapping yarn feeding control mechanism. The core yarn feeding control mechanism is main used for providing active feeding of core yarn and the wrapping angle control mechanism is located in front of and under front rollers to control an output angle of the wrapping yarn, so that auxetic composite yarn with a certain wrapping angle and a uniform, controllable and stable wrapping structure can be obtained. The spinning device is improved from a traditional ring spinning machine, has the advantages of easy operation of a spinning method, convenient implementation and low cost, and is suitable for continuous production, promotion and application.

Description

technical field

[0001] The invention relates to a spinning device and method of an auxetic composite yarn based on improved ring spinning with controllable wrapping angle, uniform structure, stable spinning tension and convenient implementation of dual-filament or multi-filament yarns, belonging to spinning technology field. Background technique

[0002] Auxetic material refers to a material with a negative Poisson’s ratio, that is, when it is stretched (or compressed) in a certain direction relative to traditional materials, it will shrink (or expand) perpendicular to the direction of the force. When stretched (or compressed) in a certain direction, it will expand (or shrink) perpendicular to the direction of the force. Auxetic yarn is also called negative poise ratio yarn. Under certain axial tension, the radial profile of the yarn increases. Studies have found that in addition to negative Poisson's ratio, auxetic materials also have other unique properties compared with...

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