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2959results about "Drafting machines" patented technology

Positioning spinning method of embedded system

The invention relates to a method for positioning yarn by an embedded system, belonging to the technical field of textile processing. The method comprises the technical proposal that: on a drafting mechanism of a ring spinning frame, two chopped fiber rough yarns unreeled from a rough yarn bobbin enter a drafting zone respectively in parallel to be drafted by yarn guiding horns; two continuous yarns are fed from the rear end of a front roller, and join with the two crude yarn strands respectively at a front jaw; the two drafted crude yarn strands and the two continuous yarns are output from the front jaw, enter a twisting triangular zone to be twisted, and are wound on a spun yarn bobbin into yarn; according to different relative positions of the two crude yarn strands and the two continuous yarns, yarns with various structures can be formed. The method can realize that polycomponent yarns with a core-spun structure, a fasciated structure and a folded yarn like structure can be spinned on the ring spinning frame; the yarn structure can be accurately selected and determined and is closer, and yarns has more excellent hairiness, brute force and evenness; and spinning of special fiber yarns on the traditional spinning equipment can be realized so as to enlarge the range of spinning materials.
Owner:WUHAN TEXTILE UNIV +2

Technological process of ramie bast fiber

The invention relates to a technological process of a ramie bast fiber, which comprises a basic degummed ramie production route: raw ramie skin-sorting and derooting-mechanical ungluing-cage loading-biological ungluing-high-temperature rinsing-cage unloading-sub-fiber washing-soft rinsing-radio frequency drying- degummed ramie. Long ramie can be growth through the mechanical hemp oiling- infiltration and health care-stretch breaking and carding-pre-gilling-combing and sorting-final gilling of the degummed ramie. Short ramie can be produced through the combing and the sorting of combed noil. Oakum can be produced through biological ungluing-high-temperature stewing and ungluing-high-temperature rinsing-cage unloading-sub-fiber washing-soft rinsing-dehydration and drying-radio frequency drying-mechanical hemp oiling- infiltration and health care-opening and edulcoration- combing and sorting. Improving methods are adopted for the mechanical ungluing, biological ungluing, high-temperature rinsing, sub-fiber washing, stretch breaking and carding, combing and sorting and the like. The preparation process has the advantages of short process, high production efficiency, high mechanical automation degree, stable product quality, excellent fiber quality and strong operability of fiber length and fineness, and can be used in the production processes of various bast fiber raw material, gramineae fiber raw material, leaf fiber raw material and other fibers.
Owner:THE QUARTERMASTER RES INST OF THE GENERAL LOGISTICS DEPT OF THE CPLA +2

Orientation electro-spinning nanometer fiber spinning method and device thereof

InactiveCN103132194AHigh degree of axial orientationSuppress spinning instabilityDrafting machinesFilament/thread formingBobbinEngineering
The invention discloses an orientation electro-spinning nanometer fiber spinning method and a device thereof. A metal shower nozzle which exerts positive and negative high pressure is adopted to spin two strands of nanometer fibers with opposite charges, an electric field line of a spinning electric field, relative to a common spinning electric field, is straight, stability of spinning is effectively restrained, and the spinning nanometer fibers are straight. Two strands of the fibers surround the yarn tail and form a cone-shaped twisting trigonum on the upper portion of a metal twisting machine, and enable the nanometer fibers to be further oriented and twisted to form yarn through electric field force, tractive force of the yarn and acting force of the metal twisting force. The spinning nanometer fiber yarn is conducted heat shaping through a heat processing device under certain tensile force, degree of orientation of the nanometer fibers along the axial direction of the yarn, breaking force and yarn levelness are further improved, and the yarn after shaped is collected by a winding bobbin. The device can achieve the aim that orientation nanometer fiber yarn can be continuously prepared, is simple in device, convenient to operate, and good in resultant yarn continuity, yarn breaking strength and yarn levelness, and not only can spin pure nanometer fiber yarn, but also can spin nanometer fibers / filament core composite yarn. The orientation nanometer fiber spinning method and the device thereof have important application value in the fields, such as a biomedical field and a sensor field.
Owner:杨恩龙 +1

Nano electrostatic spinning and staple fiber ring spinning integrated yarn forming method

The invention relates to a nano electrostatic spinning and staple fiber ring spinning integrated yarn forming method, and belongs to the technical field of textile processing. The method comprises the following steps: arranging an electrostatic spinning apparatus between each yarn guide hook of a ring spinning frame and a front roller jaw formed by a front roller corresponding to the yarn guide hook and a front rubber roll, enabling a receiving surface of the electrostatic spinning apparatus to stay on a same plane with a public tangential surface of a front leather roll and the front roller at the front roller jaw, forming an electrostatic spinning area between an electrostatic spray head and a receiving surface of a receiving plate, and combining and twisting a nano fiber net spun out from the electrostatic spray head and staple fiber strands passing by the receiving surface of the receiving plate. According to the method, the electrostatic spinning and a conventional ring spinning are reasonably integrated, so that the high-speed successful production of nano fiber yarns is guaranteed, the naon fiber net effectively captures exposed fibers and improves the winding tightness, and the yarn forming structure and performance quality of the nano fiber wrapped blended yarns can be greatly improved. Equipment involved in the method is universal, and the operation and the use are convenient.
Owner:WUHAN TEXTILE UNIV

Three-axis symmetrical composite spinning process and equipment for high-elasticity composite yarn

InactiveCN102304796AStable and anti-wrinkleStable formDrafting machinesYarnYarnFiber
The invention relates to a three-axis symmetrical composite spinning process and equipment for a high-elasticity composite yarn and belongs to the technical field of multi-axis composite spinning. The three-axis symmetrical composite spinning process for the high-elasticity composite yarn is characterized in that: a holding roller capable of controlling the tensile force is arranged above a front roller of the common ring spinning machine, so that a stretch yarn passing around is centrally fed into the jaw of the front roller under the isostension condition; short fiber strips on two sides of the stretch yarn are rounded by a buncher and then are fed into the jaw of the front roller symmetrically and synchronously; and after the stretch yarn and the two short fiber strips go out of the jaw of the front roller, the stretch yarn and the two short fiber strips are converged under the twisting action to form the high-elasticity composite yarn with the stretch yarn arranged inside and the short fiber strips wrapped outside. By the process, the high-elasticity composite yarn can be effectively obtained and the absolute elasticity elongation rate is 30 to 95 percent. By the process and the equipment thereof, the technical problem that the elasticity of the yarn can be improved, but the high-elasticity composite yarn cannot be obtained at present can be solved.
Owner:WUHAN TEXTILE UNIV

Processing method of double-component elastic spandex core-spun yarn

The invention discloses a processing method of a double-component elastic spandex core-spun yarn, comprising raw materials, production steps and production process improvement thereof, wherein the raw materials include a first elastic spandex filament, a second elastic spandex filament and wrapping yarn; the second elastic spandex filament is half of the first elastic spandex filament in diameter, and the two elastic spandex filaments differ in traction multiple; and the wrapping yarn is a short fiber; the production steps include: rolling the comparatively thick wrapping yarn into the form of a flat strip; before entering into a spinning room, guiding both the elastic spandex filaments as double cores to the middle of the flat-strip shaped wrapping yarn; folding the flat-strip shaped wrapping yarn by taking the double cores as a fold line, and covering the double cores on the fold line in the flat-strip shaped wrapping yarn; feeding the double cores and the folded flat-strip-shaped wrapping yarn into the spinning room, and stretching and twisting in an 8-shaped form to form the double-component elastic spandex core-spun yarn. The product is elastic and free from the feeling of being too tight on the body, and overcomes the shortcoming of being insufficient in elasticity or too tight.
Owner:徐州时代纺织有限公司

Preparation method of yarn with long and short fiber compound structure

The invention discloses a preparation method of a yarn with a long and short fiber compound structure, belonging to the technical field of textile processing. The preparation method comprises the following steps of: feeding short fiber rove fiber strands unwound from a rove tube into a drafting zone through a yarn-guiding horn for drafting on a drafting mechanism of a ring spinning frame; feeding at least three filaments into a front jaw from the rear end of a front roller at an interval of 0.1-3mm; jointing the filaments and the rove fiber strands at the jaw part; outputting and feeding drafted rove fiber strands and the filaments from the front jaw into a twisting triangular zone; twisting the rove fiber strands and the filaments into the yarn and winding the yarn on a spun yarn bobbin; and forming compound yarns with different structures according to the space among the filaments and the different relative positions of the rove fiber strands. The invention can prepare yarns with a unique internal space structure and an external surface structure on the ring spinning frame, enhances the strength, the wear resistance and the bend resistance of the yarns, has favorable conformality of textures and can achieve the effect of wearing after washing. The invention realizes the preparation of the yarns with special structures and special functions on the traditional spinning equipment.
Owner:SOUTHWEST UNIVERSITY +1

Low-twist, high-strength and little-fuzz yarn production method and yarn

The invention discloses a low-twist, high-strength and little-fuzz yarn production method and yarn. The method includes the opening picking process, the cotton carding process, the fine carding process, the drawing process, the roving process and the yarn spinning process. A larger-diameter and narrow-groove negative pressure hollow roller and a corresponding air draft assembly are adopted for the method, and therefore generated fuzz can be effectively reduced; under the condition that a mechanical friction twist device is adopted in the yarn spinning segment to reduce the twist coefficient by 15-30%, the single yarn strength is kept unchanged, polyester filament yarn serves as core silk so that the kind adaptability of the yarn can be effectively improved, the yarn strength is enhanced, the rotating direction of the twist device is opposite to that of a spindle, the twist stopping effect can occur, the width of a twisting triangular area is increased, the wrapping effect of core yarn is favorable for being improved, and a foundation is laid for developing fabric with good soft comfort. The low-twist, high-strength and little-fuzz yarn is produced with the method. Under the condition that the designed twist coefficient is reduced by 16-28%, compared with a normal designed twist coefficient, the strength is improved by 3-5%, resultant yarn is 3mm or longer, and the harmful fuzz is reduced by 80-95% compared with harmful fuzz in ring spun yarn.
Owner:WUJIANG JINGYI SPECIAL FIBER
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