CN112877829B - Spinning method and device for spinning single yarn with strand structure on ring spinning frame - Google Patents
Spinning method and device for spinning single yarn with strand structure on ring spinning frame Download PDFInfo
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/72—Fibre-condensing guides
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/74—Rollers or roller bearings
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H7/00—Spinning or twisting arrangements
- D01H7/02—Spinning or twisting arrangements for imparting permanent twist
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
- D02G3/28—Doubled, plied, or cabled threads
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- Engineering & Computer Science (AREA)
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- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention relates to a processing method for spinning single yarns with a strand structure on a ring spinning frame, which adopts a group of twisting mechanisms arranged at the front end of a front leather roller and the front roller, the twisting mechanism consists of a twisting leather roller and a twisting roller which do rotary motion and reciprocating motion, fibers which are arranged in parallel in strands are twisted under the friction action of the twisting mechanism to form pre-added twisting orientation, two bundles of pre-twisted ring spun yarns after twisting are output through twisting jaws formed by the twisting roller and the twisting leather roller, and the two bundles of pre-twisted ring spun yarns form gathering and twisting in a twisting triangle area under the action of twisting force of twisting and torque force in the twisted yarns to form single yarns with a strand structure which is a main body and is spiral and partially twisted into a whole, so that the strength, the wear resistance and the flexibility of the yarns are increased, the technological process of single yarn doubling is reduced, the application range is wide, the operation is convenient, and the large-area popularization and the use are easy.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to a spinning method and a spinning device for spinning single yarns with a strand structure on a ring spinning frame.
Background
The ring spinning technology belongs to holding end spinning, and is widely applied due to strong raw material adaptability and wide production variety range, but also has the defects of more yarn hairiness, insufficient strength, poor hand feeling, high quality control difficulty, low efficiency and the like. In the conventional ring spinning twisting process, twist is generated by the movement of a bead ring, and the twist is transmitted to a twisting point from bottom to top after the twist is generated. In the twisting process, the fiber at the jaw of the front roller rotates around the axis of the fiber strand, so that the width of the fiber strand is gradually reduced, and two sides are folded to form a twisting triangle. In the twisting triangle area, the width and the section of the strand are changed, and a yarn which is approximately cylindrical is gradually formed from a flat shape, and finally the yarn which can be woven is formed, so that the twisting triangle area is a key area in the yarn forming process, the geometric form of the twisting triangle area directly influences the internal fiber tension distribution and the fiber stretching force distribution, the generation of the residual torque of the internal fiber and the exposure of the hairiness of the surface layer fiber are caused, the yarn forming structural characteristics are influenced, and the ring single yarn with the special fiber structural characteristics of the twin-yarn with the characteristics of high strength, less hairiness and good yarn evenness cannot be realized.
Aiming at overcoming the problems of high hairiness and insufficient strength of finished yarn, the compact spinning technology in recent years is rapidly developed and is characterized by 'drafting not bundling and bundling not drafting'. The basic method is that a set of fiber bundling device is added in front of the drafting device of the traditional ring spinning frame to increase the control of the fibers in the spinning triangle, so that the drafted fiber bundles are gathered towards the center of the yarn before entering the twisting area, the width of fiber strands at the jaw is reduced, the spinning triangle is eliminated, and the yarn hairiness is obviously reduced. Compared with the common ring yarn, the compact spinning yarn has remarkable effects in aspects of improving yarn strength and wear resistance, reducing hairiness and the like, but causes the novel problems of compact yarn, hard hand feeling of the manufactured fabric, high production energy consumption and the like. The invention provides a whole-bundle de-feathering device with simple structure and no additional energy consumption, which is disclosed in Chinese patent No. CN201410671777.0 and publication No. 2015.2.4, and can dynamically capture and gather the surface layer fibers of the sliver which are fully twisted by internal and external transfer movement by utilizing a rotary sheave gathering and remolding triangle area, thus greatly improving the quality of the finished yarn, but the broken ends caused by the fact that the fiber is wrapped by the rotary sheave in actual production are not obvious in strength improvement. Chinese patent No. CN1995510a, publication No. 2007.7.11, entitled ironing spinning method for improving yarn performance, in which fibers are subjected to heat-moisture treatment during spinning, so as to reduce fiber stiffness, and to achieve sufficient internal and external transfer of fibers, thereby reducing the generation of yarn hairiness. However, these devices are inconvenient to process and install, require additional energy consumption, present a certain safety hazard, and have insignificant effects on non-heat sensitive fibers. Meanwhile, the patents can only improve the strength by cohesion of single aggregation fibers and promoting the tight winding of yarn packages so as to enhance the cohesion degree among the fibers, and do not change the fiber arrangement structure in the yarn body to regulate and control the strength.
In addition, some researches realize the construction of the different-direction arrangement characteristics of the inner and outer fibers of the yarn, and the yarn forming strength is regulated and controlled by a spinning method with different structures of the inner and outer layers of the yarn. As in chinese patent No. CN 201410105223.4, publication No. 2014.3.20, the invention creates a processing method and apparatus for low-hairiness low-torque ring yarn, which uses the rotating air flow sprayed from the nozzle to apply reverse twist to the yarn, so as to promote the surface layer yarn to be partially wrapped in a turnover manner, thereby realizing the inner and outer layer forward and reverse twist cross wrapping to increase the yarn strength, but the air flow energy consumption is high, the operation precision is high, the mechanism is complex, and the large-scale production is difficult to realize. In addition Tao Xiaoming et al in journal of textile research (journal of textile research) vol.34, no.6, 2013 disclose a low torque ring spinning method that utilizes 1 simple mechanical false twisting device (see fig. 1) to change the arrangement of the fibers in the resultant yarn, so that the residual torque of the yarn is significantly reduced by its internal balance, and a non-coaxial profiled helical structure, partial inversion phenomenon of the fiber segments is realized. However, the false twister in the spinning method has the defects of larger use problem and complex operation, and simultaneously, broken ends easily occur in the spinning process, thereby influencing the production efficiency.
The sirospun composite yarn is made up by using two or more than two components through the processes of feeding, drafting, converging and twisting according to a certain technological parameter. The siro spinning technology is widely applied to the production of cotton spinning yarns due to the good yarn structure, excellent quality and mature production technology, but the high-quality yarns occupy smaller space, so that the development of the siro spinning technology is restricted. In the spinning process, two single yarn strands output from a front roller with a certain gauge are crossed at a converging point and twisted together by twisting. In the transmission process of the twist from bottom to top, the process of wrapping and self-twisting similar to the two-ply yarn with the same twist is completed, namely, a part of the twist causes the two-ply single yarn to be mutually wrapped along the axial direction of the composite yarn to form a spiral structure; a part of twist overcomes the resistance of a converging point to enable the two single yarns to obtain a small amount of true twist, so that the two single yarns form a homodromous spiral state with respective axes. In the final composite yarn, as the two single yarns have only a small amount of true twist and a plurality of twists are transferred to the integral yarn, fibers are mutually transferred when the two single yarns are converged, the style of the strands is damaged, and meanwhile, the fibers are twisted and inclined to different degrees under the actions of mutual extrusion, entanglement and the like, so that the double-winding spiral geometry of the finished yarn cannot be controlled, and the high-quality yarn structure yarn is difficult to form. The invention provides an isolated sirospun device, which belongs to the Chinese patent number CN101603217B and the publication date 2010.11.10, wherein hairiness is attached to a sliver when the sliver rotates in a groove of the isolated sirospun device, so that the effect of yarn forming strand is more obvious and the quality is higher. Chinese patent No. CN101979733B, publication No. 2010.11.15, entitled a method for producing hemp high count yarn and plied yarn by siro spinning or sirofil spinning, which includes reversely twisting the siro blended yarn to form plied yarn and then removing vinylon to obtain hemp high count plied yarn, or reversely twisting the blended yarn after removing vinylon to obtain hemp high count plied yarn, but requires post-treatment, is complex in operation and has no universality. Chinese patent No. CN106676689B, publication No. 2016.11.14, the invention creates a compact siro spinning yarn auxiliary device and a compact siro spinning yarn method, the feeding position of the roving is adjusted by a bell mouth traversing mechanism, the abrasion of the leather roller is reduced, the yarn quality is ensured, but the method cannot adjust the twist wrapping structure of the fiber. However, the method for producing the yarn with the folded yarn style by using the sirospun still cannot fundamentally solve the technical problems of low internal and external transfer degree, poor fiber cohesion, low yarn forming strength, high yarn forming hairiness and the like in the yarn structure produced by the method, and meanwhile, the spinning process is complex, the mechanism cost is high, and the operation is inconvenient because the acting force of the false twister on the yarn is vertical to the yarn moving direction.
The mechanical property of the yarn is not only an important index for measuring the quality of the yarn, but also determines the subsequent production and processing quality and efficiency of the yarn, so that the spun ring spinning single yarn is difficult to meet the requirement of a subsequent weaving process due to the strength thereof, the single yarn is required to be doubled at the moment, and the two single yarns are doubled to form a spiral double-strand or multi-strand structure yarn so as to greatly improve the yarn strength, but the doubling process increases the production cost and reduces the production efficiency, and therefore, a novel structure yarn meeting the double-strand structure characteristics and the yarn forming strength is required to be directly spun on the ring spinning.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a spinning method and a spinning device for spinning single yarns with a strand structure on a ring spinning frame, wherein the spinning method can increase yarn strength, wear resistance and flexibility, reduces the process flow of single yarn doubling and has wide application range.
In order to achieve the above object, the technical solution of the present invention is:
A spinning method for spinning single yarn with a strand structure on a ring spinning frame, the spinning method is applied to yarn composed of a positive twist strand structure area, a negative twist strand structure area and a ring twisting structure area, wherein the ring twisting structure area is connected between the positive twist strand structure area and the negative twist strand structure area, and the spinning method comprises the following steps: after being drawn, two ring-spun staple fiber slivers are parallel input into a twisting mechanism for twisting treatment, the sliver is subjected to reciprocating twisting torsion movement under the transverse friction action of the twisting mechanism, the sliver is subjected to pre-twisting degree to form sliver with fiber twisting orientation, and simultaneously, the two ends of the sliver are opposite in twisting degree direction; then, two strips twisted by twisting are output from the twisting mechanism, form converging ply in a twisting triangular area, and are sequentially wound on a bobbin through a yarn guide hook and a steel wire ring; when the transverse twisting direction of the twisting mechanism is the same as the ring twisting direction, the tension applied to the two fiber strands is obviously increased, the transfer of fibers in the single strand yarns is enhanced, the entanglement and cohesion of the yarns during convergence are enhanced, and the built-in rotation entanglement of the yarns in the formed strand structure is tight; when the transverse twisting direction of the twisting mechanism is opposite to the ring twisting direction, the built-in torsion stress of two strands of converged single yarns is balanced with the torsion torque of ring twisting, the yarn with the stranded yarn structure is smooth and soft, a non-twisting area for positive and negative twisting is arranged in the steering process of the twisting mechanism, the strands are output in a parallel non-twisting state at the moment and are converged in a form of a sirospun twisting triangular area, and the two strands of fiber strands are integrally and internally and externally transferred to form a single yarn structure for buckling, twisting and cohesion of the fibers.
The invention also provides a spinning device for realizing the spinning method for spinning the single yarn with the strand structure on the ring spinning frame, which comprises a front leather roller, a front roller, an upper sheath, a middle roller, a rear leather roller, a rear roller, a yarn guide hook, a bead ring and a yarn tube, and is characterized by also comprising a twisting leather roller and a twisting roller, wherein the twisting leather roller and the twisting roller form a twisting mechanism which is arranged at the front ends of the front leather roller and the front roller, and the front leather roller and the front roller can rotate and transversely reciprocate; the motion forms of the twisting mechanism are three: the twisting roller and the twisting leather roller both do rotary and reciprocating transverse motions; the twisting roller only rotates, and the twisting leather roller rotates and reciprocates and traverses; the twisting roller only rotates, and the twisting roller rotates and reciprocates and traverses.
Further, the middle of the twisting leather roller is made of metal, and the surface of the twisting leather roller is made of rubber; the middle of the twisting roller is made of metal, and the surface layer is made of rubber or metal.
Further, the transverse distance of the twisting mechanism is 1-5 cm, the transverse speed is 0.5-10 m/min, the reciprocating steering interlacing frequency is 10-30 times/min, and the pressure between the twisting leather roller and the twisting roller is 100-200N.
Due to the adoption of the technical scheme, compared with the prior art, the processing method for spinning the single yarn with the strand structure on the ring spinning frame has the advantages that:
The twisting mechanism is composed of twisting leather rollers and twisting rollers which do rotary motion and reciprocating motion, and the twisting mechanism is used for holding and twisting two fiber strands which enter the twisting mechanism in parallel, so that the structure that fibers in the traditional ring spinning yarn are arranged in a one-way twisting and twisting mode is changed, the two fiber strands which are arranged in parallel are twisted and entangled under the twisting friction effect to form twisting yarn strips with pre-twisting degree, and the surface fibers of the yarn strips are tightly gathered, and the internal fiber orientation is increased. The twisting degree of the two twisted yarns in advance in the twisting process is dynamically self-adjusted and rearranged, meanwhile, the twisting degree of the two twisted yarns at the convergence point is not balanced, the two yarns form a gradient spiral double-strand yarn cohesion mode under the synergistic effect of the torque force of the ring spindle, the stress and the tension of the twisted yarns, the single-yarn structure of the ring spindle is changed, the double-strand yarn structure which can be achieved only by doubling two single yarns is realized, and the yarn strength is greatly improved. Meanwhile, forward and reverse twisting is repeatedly switched and adjusted to adjust the pre-twisting direction of the fibers, the arrangement state of the fibers in a twisted sliver main body is changed, when the twisting direction of the twisted sliver is the same as the twisting direction of the ring spindle, the cohesion of the fibers in the yarns is enhanced, when the twisting direction of the twisted sliver is opposite to the twisting direction of the ring spindle, the torque stress in the yarns is balanced, when the twisting direction is changed, the twisting degrees of the two twisted sliver are released, the twisting degrees are converged in a twisting triangle area in a non-twisting state, a single yarn structure with the twisted and cohesive fiber sliver main body is formed, the single yarn forming of the main body double-strand spiral type and partial twisted and cohesive type strand structure is realized, the strength, the wear resistance and the flexibility of the yarns are increased, and the technological process of forming the strands by single yarn doubling and strand twisting is shortened. The invention forms twisting cohesion twisting and then double gathering twisting to form single yarn with main body double-strand spiral type and local twisting cohesion type integrated yarn structure, which not only reduces yarn hairiness, improves yarn strength and softness, but also inherits the raw material universality and variety adaptability of traditional ring spinning and breaks through the structural characteristics of the ring spinning yarn. The invention has the advantages of convenient operation, no additional energy consumption, simple and clear mechanism and easy popularization and use.
Drawings
Fig. 1 is a schematic diagram of a processing method for spinning single yarn with a strand structure on a ring spinning frame.
Fig. 2 is a schematic diagram of a yarn structure obtained by a processing method for spinning a single yarn with a strand structure on a ring spinning frame.
In the figure: 1-twisting leather rollers, 2-twisting rollers, 3-front leather rollers, 4-front rollers, 5-upper sheath, 6-middle rollers, 7-rear leather rollers, 8-rear rollers, 9-fiber strands, 10-yarn guiding hooks, 11-bead rings, 12-bobbins, 13-pre-twisted yarns, 131-Z-direction pre-twisted yarns, 132-S-direction pre-twisted yarns, 14-untwisted yarns, 15-co-twisting areas, 16-reverse twisting areas, 17-untwisting areas, 18-forward twisting strand structure areas, 19-reverse twisting strand structure areas and 20-ring twisting structure areas.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1 to 2, a processing method for spinning single yarn with a strand structure on a ring spinning frame is based on a drafting mechanism of four-roller ring spindle spinning, and adopts a twisting mechanism which is arranged at the front ends of a front leather roller 3 and a front roller 4, wherein the twisting mechanism consists of a twisting leather roller 1 and a twisting roller 2 which do rotary motion and reciprocating motion, and the twisting roller 2 and the front roller 4 keep the same linear velocity. Unwinding two ring spun staple fiber strands 9 from a bobbin yarn package, feeding the two ring spun staple fiber strands into a drafting zone consisting of a rear roller 8, a rear leather roller 7, a middle roller 6, an upper sheath 5, a front roller 4 and a front leather roller 3 in parallel, wherein the drafting multiple of the rear zone is 1-3 times, the drafting multiple of the front zone is 10-100 times, two fiber strands 9 which are output in parallel through the drafting zone enter a twisting mechanism, the traversing distance of the twisting mechanism is 1-5 cm, the traversing speed is 0.5-10 m/min, the reciprocating steering interleaving frequency is 10-30 times/min, the tension between the twisting leather roller 1 and the twisting roller 2 is 100-200N, the middle of the twisting leather roller is made of metal, and the surface of the twisting leather roller is made of rubber; the middle of the twisting roller is made of metal, and the surface layer is made of rubber or metal. The fiber which is arranged in parallel in the strand is twisted under the friction action of a twisting mechanism to form pre-added twisting orientation, meanwhile, in the twisting process, a twisting roller 2 and a twisting leather roller 1 can both rotate and reciprocate to move transversely, one of the twisting roller 2 and the twisting leather roller 1 only rotates, the other rotates and reciprocates to move transversely, thereby realizing twisting catching type gathering on the surface fiber of the strand, the yarn hairiness is rewound on a ring spun yarn trunk to eliminate, two bundles of pre-twisted ring spun yarns after twisting are output through twisting jaws formed by the twisting roller 2 and the twisting leather roller 1, and under the twisting force of cohesion twisting and the twisting torque force in the twisted yarn, two bundles of pre-twisted ring spun yarns form gathering ply in a twisting triangular area and are sequentially wound on a yarn tube 12 through a yarn guide hook 10 and a steel wire ring 11;
During spinning, the front roller 4, the front leather roller 3, the twisting roller 2 and the twisting leather roller 1 are kept to synchronously rotate at a high speed, two drawn fiber strands 9 are parallelly output from a front jaw formed by meshing the front roller 4 and the front leather roller 3, enter a twisting mechanism formed by tightly pressing and attaching the twisting roller 2 and the twisting leather roller 1 in a parallel state, one end of the fiber strand 9 output by the front jaw is held by the front jaw, the other end is controlled by a yarn guide hook 10, the fiber strands at the middle section of two holding points are held by the twisting roller 2 and the twisting leather roller 1 and perform reciprocating twisting and twisting motions under the action of transverse friction, the fiber strands form pre-twisted yarn strands 13 with fiber twisting orientation by pre-twisting degrees through the twisting mechanism, and simultaneously the two ends of the pre-twisted yarn strands 13 are opposite in twisting direction, when the two pre-twisted yarns 13 are output from the twisting mechanism, the twisting force of ring twisting is applied to the two pre-twisted yarns to make the two pre-twisted yarns converged, and as part of the yarns have twisting orientation, when the two pre-twisted yarns 13 are combined, the fibers in the two pre-twisted yarns 13 do not mutually transfer between the two yarns, only the fibers in the single yarns are twisted and cohesive, and the two pre-twisted yarns 13 are converged in a stranding mode to form a single yarn with a spiral cohesive twisted double-strand structure, and the other part of the single yarn does not have twisting orientation, and then the single yarn with the spiral cohesive twisted double-strand structure is connected with the single yarn with the spiral cohesive double-strand structure to finally form the single yarn with the main body double-strand spiral type and partial twisting cohesive double-strand structure.
The yarn forming movement process is divided into three circulation stages, namely, when the transverse twisting direction of the twisting mechanism is the same as the ring twisting direction, the yarn forms a homodromous twisting area 15, the tension applied to two fiber strands is obviously increased, the transfer of the fibers in single strand yarns is enhanced, the entanglement and cohesion of the yarns during aggregation are enhanced, and the built-in rotation entanglement of the yarns in the formed strand structures is tight. And in the second stage, when the transverse twisting direction of the twisting mechanism is opposite to the ring twisting direction, the section of yarn forms a reverse twisting area 16, the built-in torsion stress of two strands of converged single yarns is balanced with the torsion torque of the ring twisting, the twist and tension distribution of the yarns in the traditional spinning process are changed, and the yarn with a stranded yarn structure is smooth and soft. In the third stage, a non-twisting area 17 for turning forward and backward is arranged in the turning process of the twisting mechanism, at this time, the non-twisting sliver 14 is output in a parallel non-twisting state, and is converged in the form of a sirospun twisting triangular area, and two fiber strands are integrally and internally and externally transferred to form a fiber buckling, twisting and cohesion single yarn structure. The invention forms twisting cohesion twisting and back double-strip gathering twisting with two fiber strands to form single yarn with a strand structure integrating main body double-strand type and local twisting cohesion, which not only reduces yarn hairiness, improves yarn strength and softness, but also inherits the raw material universality and variety adaptability of the traditional ring spinning and breaks through the structural characteristics of the ring spinning yarn.
In fig. 2, the single yarn is composed of a forward twist strand construction region 18, an reverse twist strand construction region 19, and a ring twist construction region 20; the two Z-twist pre-twisted yarns 131 are wound by the Z-twist forward spiral strand to form a forward twist strand structure area 18, the internal fibers are tightly entangled, the yarn forming strength is improved, the yarn forming hairiness is fully wound into the yarn body, and the yarn hairiness is reduced; two S-twist pre-twisted yarns 132 are wound by Z-twist reverse spiral strands to form a reverse twist strand structure area 19, and the two reverse fiber arrangements are adjusted to form yarn twist distribution, so that the integral torque of single yarns is reduced; the untwisted yarn strip 14 is twisted and held into yarn under the drive of a Z-twist ring spindle to form a ring spindle twisting structure area 20 of a segment, and the positive twist strand structure area 18 and the reverse twist strand structure area 19 are connected to balance the stress state of the yarn body. The comprehensive fiber strand passes through a twisting roller 2 and a twisting roller 1 to form a twisting regulation multi-stage fiber arrangement structure, a main body double-strand spiral type single yarn structure with partial twisting cohesion is formed, and the novel clear structure yarn with the functions of twisting cohesion type twisting connection of the fiber strand, multi-layer fiber twisting spiral type cohesion and different-layer fiber twisting balance is realized.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The spinning method of the invention is used for producing 19.7tex yarn. The raw material used in the experiment was two bundles of 100% pure cotton rovings. The rotational speed of the spindle of the ring spinning machine is 7000r/min. The transverse distance of the twisting mechanism is 3cm, the transverse speed is 2m/min, the reciprocating steering staggering frequency is 15 times/min, the pressure between the twisting leather roller and the twisting roller is 100N, the diameter of the twisting leather roller is 3cm, and the height of the twisting leather roller is 8cm.
For each yarn count, a single yarn sample was processed for comparison using the conventional ring spinning method and the spinning method of the present invention, and the main properties of each yarn sample were tested, wherein the residual torque was tested using the wet winding method, and the main properties of each yarn sample were tested as shown in table 1: list one
As can be seen from the first table, the yarn spun by the spinning method of the invention has obviously reduced hairiness value and residual torque (wet twist number), and compared with the siro spinning yarn spun by the traditional ring spinning machine, the yarn spun by the spinning device of the invention has obviously improved breaking strength and breaking elongation, and the evenness performance can be basically kept unchanged, thus forming a single yarn structure of a main double-strand type and a local twisting and holding type, and realizing a clear and novel structure yarn integrating fiber strand twisting and holding type twisting connection, multi-layer fiber twisting and spiral holding type winding and different-layer fiber twisting and balancing. The technical method is simple, the yarn quality is effectively improved, and the manufacturing cost is low, so that the method is suitable for popularization and application in textile industry.
In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the claimed application.
The embodiments described above and features of the embodiments herein may be combined with each other without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (4)
1. A spinning method for spinning single yarn with a strand structure on a ring spinning frame, the spinning method is applied to yarn comprising a positive twist strand structure area, a negative twist strand structure area and a ring twisting structure area, wherein the ring twisting structure area is connected between the positive twist strand structure area and the negative twist strand structure area, and the spinning method is characterized in that: after being drawn, two ring-spun staple fiber slivers are parallel input into a twisting mechanism for twisting treatment, the sliver is subjected to reciprocating twisting torsion movement under the transverse friction action of the twisting mechanism, the sliver is subjected to pre-twisting degree to form sliver with fiber twisting orientation, and simultaneously, the two ends of the sliver are opposite in twisting degree direction; then, two strips twisted by twisting are output from the twisting mechanism, form converging ply in a twisting triangular area, and are sequentially wound on a bobbin through a yarn guide hook and a steel wire ring; when the transverse twisting direction of the twisting mechanism is the same as the ring twisting direction, the tension applied to the two fiber strands is obviously increased, the transfer of fibers in the single strand yarns is enhanced, the entanglement and cohesion of the yarns during convergence are enhanced, and the built-in rotation entanglement of the yarns in the formed strand structure is tight; when the transverse twisting direction of the twisting mechanism is opposite to the ring twisting direction, the built-in torsion stress of two strands of converged single yarns is balanced with the torsion torque of ring twisting, the yarn with the stranded yarn structure is smooth and soft, a non-twisting area for positive and negative twisting is arranged in the steering process of the twisting mechanism, the strands are output in a parallel non-twisting state at the moment and are converged in a form of a sirospun twisting triangular area, and the two strands of fiber strands are integrally and internally and externally transferred to form a single yarn structure for buckling, twisting and cohesion of the fibers.
2. A spinning device for realizing a spinning method for spinning single yarn with a strand structure on a ring spinning frame according to the above claim 1, the spinning device comprises a front leather roller, a front roller, an upper sheath, a middle roller, a rear leather roller, a rear roller, a yarn guiding hook, a steel wire ring and a yarn tube, characterized in that the spinning device also comprises a twisting leather roller and a twisting roller, the twisting leather roller and the twisting roller form a group of twisting mechanisms arranged at the front ends of the front leather roller and the front roller, wherein the front leather roller and the front roller can rotate and transversely reciprocate; the motion forms of the twisting mechanism are three: the twisting roller and the twisting leather roller both do rotary and reciprocating transverse motions; the twisting roller only rotates, and the twisting leather roller rotates and reciprocates and traverses; the twisting roller only rotates, and the twisting roller rotates and reciprocates and traverses.
3. The spinning device for spinning single yarn with a strand structure on a ring spinning frame according to claim 2, wherein the middle of the twisting leather roller is made of metal and the surface is made of rubber; the middle of the twisting roller is made of metal, and the surface layer is made of rubber or metal.
4. The spinning device for spinning single yarn with a strand structure on a ring spinning frame according to claim 2, wherein the traverse distance of the twisting mechanism is 1-5 cm, the traverse speed is 0.5-10 m/min, the reciprocating steering interlacing frequency is 10-30 times/min, and the pressure between the twisting leather roller and the twisting roller is 100-200N.
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| CN114438633B (en) * | 2021-12-21 | 2024-05-03 | 浙江云泰纺织有限公司 | Yarn twisting mechanism with adjustable twist |
| CN115182076A (en) * | 2022-07-15 | 2022-10-14 | 沈跃飞 | Grinding and twisting integrated device for yarn preparation |
| CN115449927B (en) * | 2022-10-13 | 2024-03-08 | 泰安顺茂新材料集团有限公司 | Yarn twisting method |
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| CN106592027A (en) * | 2016-12-01 | 2017-04-26 | 东华大学 | Processing device and method for improving performance of siro spinning |
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| GB1347490A (en) * | 1970-08-19 | 1974-02-27 | Platt International Ltd | Method of and apparatus for making textile yarn and to yarn produced thereby |
| DE10032708C1 (en) * | 2000-07-07 | 2002-01-31 | Hamel Ag Arbon | Method and device for producing a self-twist yarn |
| CN103938320B (en) * | 2014-04-14 | 2016-08-17 | 上海八达纺织印染服装有限公司 | A kind of processing method of polyester-cotton blend self-twisted yarn line |
| CN203855718U (en) * | 2014-05-14 | 2014-10-01 | 江南大学 | Four-roller self-twisting ring spinning device |
| CN110424074A (en) * | 2019-08-12 | 2019-11-08 | 嘉兴学院 | A kind of false twisting integrated composite spinning method, apparatus of RING SPINNING and institute's yarn |
| CN111411427A (en) * | 2020-04-01 | 2020-07-14 | 东华大学 | Mechanical pre-twisting spinning method and device |
| CN111549409B (en) * | 2020-04-28 | 2021-07-20 | 浙江双兔新材料有限公司 | Device and process for producing different-twist and different-dyeing composite yarn and composite yarn |
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