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WO2013029123A1 - Method and device for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting - Google Patents

Method and device for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting Download PDF

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Publication number
WO2013029123A1
WO2013029123A1 PCT/BG2012/000022 BG2012000022W WO2013029123A1 WO 2013029123 A1 WO2013029123 A1 WO 2013029123A1 BG 2012000022 W BG2012000022 W BG 2012000022W WO 2013029123 A1 WO2013029123 A1 WO 2013029123A1
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WO
WIPO (PCT)
Prior art keywords
flows
twisting
fibrous
combing
fibres
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/BG2012/000022
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French (fr)
Inventor
Dinko BAHOV
Atanas BAHOV
Dobromir BAHOV
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
"D-A-DINKO BAHOV" ET
Original Assignee
"D-A-DINKO BAHOV" ET
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Filing date
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Application filed by "D-A-DINKO BAHOV" ET filed Critical "D-A-DINKO BAHOV" ET
Publication of WO2013029123A1 publication Critical patent/WO2013029123A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01GPRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02Carding machines
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H1/00Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11Spinning by false-twisting
    • D01H1/115Spinning by false-twisting using pneumatic means
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H4/00Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/02Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H5/00Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70Constructional features of drafting elements
    • D01H5/74Rollers or roller bearings

Definitions

  • the invention refers to a method and device for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting, which finds application in textile industry, in spinning in particular.
  • a method and device is known III to obtain yarn from staple fibres in a combing process by separating of fibres, extrusion and twisting, in which the fibrous sliver is delivered by an feeding roller and feeding table, divided into tufts by a needle roller, the said tufts are next superposed onto a perforated reel as a continuous fibrous sliver which is twisted in a vortex air chamber.
  • the disadvantage of the method is that the fibrous sliver integrity is ruined.
  • Another disadvantage of the method is that when fibres pass from the separating reel to the perforated reel the fibre parallelism is ruined.
  • Another disadvantage of the method is that it cannot achieve combing of fibre and sustain them in that state.
  • One more disadvantage of the method is that it cannot provide sufficient control over filament movement in the extrusion process.
  • the task of the invention is to create a method for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting, wherein first the front fibre ends are combed and then the rear end while high extrusion of fibrous sliver is simultaneously performed, followed by twisting of core filaments first and of wrapping filaments next, thus achieving an yarn with uniform structure with high spinning speed.
  • the task is solved through a method and device for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting in which the fibrous string, after being delivered by a feeding roller and feeding table, is combed through needle roller, and is drawn by an outgoing pair of rollers, and is twisted by a twisting element.
  • first the front ends of the filaments being fed are combed through, then their rear ends with simultaneous drawing of high rate.
  • the filaments Upon spinning with air vortex, together with the drawing the filaments are shaped into two fibrous flows, of main filaments, and of bonding filaments; after that the fibrous flows obtained are compacted separately as main, and as bonding flows, and, in the end they are linked and compacted together, and further they undergo twisting, in which the core filaments get more torques than the wrapping filaments, which are subjected to tensile strength resulting in a uniform structure yarn.
  • the filaments are shaped in one or two fibrous flows, then the said fibrous flows are compacted into one or two according to the desired yarn structure, and then are subjected to twisting in one or two separate yarns.
  • the device for method realization consists of an feeding roller and feeding table located close to a needle reel having extrusion pair mounted onto it, and a twisting chamber located after said pair.
  • the feeding table is shaped as a feeding arc below the feeding roller; after said arc two main arc-like surfaces are mounted covering part of the combing needle reel surface; the said reel is perforated and finishes close to a perforated extrusion cylinder with two pressing reels located over said cylinder, and in its interior a diaphragm is placed, wherein different zones of suction are formed.
  • the advantages of the proposed method for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting under the invention consist of the process being continuous and very short and not ruining the string integrity, and in filaments fed being subjected to combing - first their front end, next their rear ends with simultaneous high rate extrusion, with further twisting of the fibrous sliver - first of the core filaments, then of the wrapping filaments, thus forming an uniform structure yarn with high speed of spinning.
  • An advantage of the device is that is not with complex construction and is easy to service as the feeding table is shaped by a feeding arc beneath the feeding roller and two main ark-like surfaces covering part of the surface of the combing needle reel which is perforated and finishes close to an extrusion pair of reels as the lower reel is perforated, and at a close distance after the line of pressing of reels a limiter of the spinning twisting triangle is placed, and at a certain distance after it a suction-twisting element is mounted, after which the main the main twisting body is placed, and it - a pair of pull-out reels.
  • Another advantage of the device is that it can be easily centered according the type of the filaments.
  • fig.1 is the principle scheme of the method of air vortex spinning
  • fig.3 is the principle scheme of ring spinning
  • the fibrous band 24 is delivered by and feeding roller 7 and feeding table 6 in such a way as the fed fibres 1 be subjected to continuous combing of, first, their front ends in zone ⁇ , and of, next, their rear ends in zone ⁇ , with continuous high rate extension, while:
  • the filaments are shaped ⁇ in two fibrous flows, consisting of main filaments nl and bonding filaments n2; after that the fibrous flows obtained are compacted ⁇ separately as main flows c and as bonding flows d, and finally they are linked and compacted together f; after that they undergo twisting with core filaments 3 receiving more torques than the wrapping filaments 4, which are subjected to tensile strength ⁇ , which results in a uniform structure yarn 5.
  • the filaments are formed ⁇ in one n or in two n-n fibrous flows; after that the fibrous flows obtained are compacted in one c or in two c-c according to the desired yarn structure and after that they are subjected to twisting into an yarn 5 or into two separate yarns 5-5.
  • the device for method realization consists of an feeding roller and feeding table located close to a needle reel, and has an extrusion pair mounted, after which a twisting chamber is placed.
  • the feeding table 9 is shaped as a feeding funnel 7 for the fibrous sliver 6 and from a feeding arc a over the feeding roller 8, after said arc are mounted two arc-like ⁇ and ⁇ surfaces 15 and 17, covering part of the combing needle reel surface 1 1, the said reel is perforated and finishes close to a perforated extrusion cylinder 20, over which are placed two pressing reels 22 and 23, and in its interior a diaphragm 20 is placed, wherein different zones of suction are formed:
  • an arc-like surface 32 is mounted at a small distance ⁇ above the extrusion cylinder 20, and in the diaphragm 20 zones are shaped - a zone for filaments flows creation ⁇ , a zone of filament flows compacting ⁇ into main flows c and bonding flows d, and a zone ⁇ for tension of bonding flows b, close to which an incoming air chamber 25 is mounted wherein the core fibres 3 receive more torques than the wrapping fibres 4 which are subjected to tensile strength, and after that are mounted an intermediate rotating chamber 26 and air vortex chamber 27, their location being in the housing 24, and after that a pair of pull-off reels 28 and 29 is mounted.
  • a zone is shaped for forming of fibrous flows ⁇ , a zone for compacting of fibrous flows ⁇ , and after that a twisting spindle 33 is mounted, located in a ring 35 around which a traveller 34 is rotating.
  • the two main arc-like ⁇ and ⁇ surfaces 15 and 17 are eccentrically shaped relative to the center of the needle reel 11 with gradually decreasing centering in direction of filament movement from a - b the first zone ⁇ to b - e the second zone ⁇ of combing.
  • the needle combing shaft 11 is with diameter D and is hollow; between the needle wrap 12 there are radial holes 13.
  • a diaphragm 14 is mounted to regulate the vacuum which is created in the shaft 1 1.
  • the feeding roller 8 is pressed Nl to the feeding table 9 under the force of a spring, and on its surface there are helical riffle channels.
  • the lower drawing roller 20 is hollow and in its interior a diaphragm 21 is mounted to regulate the vacuum
  • the upper drawing rollers 22 and 23 are pressed N2 and N3 strongly to the lower perforated cylinder 21 under the influence of springs and this pressure can be regulated.
  • the twisting element 26 is shaped as a rotating fan vane and has a small central cylindrical hole.
  • the transition from the arc a under the feeding roller 8 and the transition at the end of the feeding table 9 are smoothly shaped with rounding r.
  • the main twisting body 27 is an air vortex jet located in a bearing housing 27.
  • the wrapping 12 of the combing roller 1 1 is cleaned from the short staples 31 and the other impurities by fast-rotating brush 26 with vacuum, and the vacuum tube 32 sucks in the detached impurities after the second zone ⁇ of combing and extrusion.
  • the device for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting operates in the following manner:
  • Combing of fibre front end 1 is made by needle wrap 12 of the shaft 11 in result of the greater speed than the speed of the roller 8.
  • the shortest fibres 1, under the friction forces of the needle wrap 12 and the vacuum in the shaft 1 1, deposit in the base of the surface of the roller 11 , and the long fibres 1 - strongly pressed and continuously fed by the roller 8, are combed by the wrap 12.
  • the friction force among the fibres themselves and the force of friction with the wrap 12, and the force of the vacuum in the roller 11 increases sufficiently, the fibres 1 are drawn.
  • the fibres with combed front ends stay in the warp 12 pressed by the ever smaller centering with the feeding arcs 15 and 17, and move with the speed of the roller 1 1.
  • the vacuum of the shaft 11 is ceased by the diaphragm 14, and the vacuum of the shaft 20 starts acting as determined by the diaphragm 21.
  • the fibres going out of zone ⁇ of the feeding arc 17 under the influence of the vacuum from shat 20 and its greater speed are transferred to the surface of the shaft 20 and are strongly pressed by the upper roller 22 in the form of a fibrous sliver 2.
  • the fibrous sliver formed in this manner starts being drawn by the pair of rollers 20 and 22 at speed greater than the speed of the roller 1 1 , thus starting the combing of their rear ends.
  • the combing of front and rear fibres ends runs continuously and the process can be regulated according to the type of fibres.
  • the drawing of the fibres is also running continuously with a high value, and can be regulated.
  • the filaments are shaped ⁇ into two fibrous flows, of main filaments nl, and of bonding filaments n2; after that the fibrous flows obtained are compacted ⁇ separately as main flows c and as bonding flows d, and, in the end they are linked and compacted together f, and further they undergo twisting, in which the core filaments 3 get more torques than the wrapping filaments 4, which are subjected to tensile strength ⁇ resulting in a uniform structure yarn 5.
  • the filaments are shaped ⁇ in one n or two n-n fibrous flows, then the said fibrous flows are compacted into one c or two c-c flows according to the desired yarn structure, and after that they are subjected to twisting in one 5 or two separate yarns 5-5.
  • the short staples and impurities 31, detached during combing in the base of wrap 12 of the shaft 1 1 are removed from the brush and vacuum 30, and the impurities detached between the shaft 1 1 and the shaft 20 are sucked in by the vacuum 32.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

The method and device find application for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting. In the method, the fed fibrous sliver of staple filaments (1) is subjected to combing of, first (β) their front ends, and of, next (γ), their rear ends, with continuous high rate drawing The device consists of a feeding roller and a feeding table, the feeding table (9) and two main arc-like surfaces (β) and (γ) covering part of the surface of the combing needle roller 1 1, which is perforated and finishes close to a drawing trine of rollers (21, 22 and 23).

Description

Method and Device for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting.
Technical field
The invention refers to a method and device for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting, which finds application in textile industry, in spinning in particular.
Background Art
A method and device is known III to obtain yarn from staple fibres in a combing process by separating of fibres, extrusion and twisting, in which the fibrous sliver is delivered by an feeding roller and feeding table, divided into tufts by a needle roller, the said tufts are next superposed onto a perforated reel as a continuous fibrous sliver which is twisted in a vortex air chamber.
The disadvantage of the method is that the fibrous sliver integrity is ruined.
Another disadvantage of the method is that when fibres pass from the separating reel to the perforated reel the fibre parallelism is ruined.
Another disadvantage of the method is that it cannot achieve combing of fibre and sustain them in that state.
One more disadvantage of the method is that it cannot provide sufficient control over filament movement in the extrusion process.
Disclosure of Invention
The task of the invention is to create a method for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting, wherein first the front fibre ends are combed and then the rear end while high extrusion of fibrous sliver is simultaneously performed, followed by twisting of core filaments first and of wrapping filaments next, thus achieving an yarn with uniform structure with high spinning speed. The task is solved through a method and device for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting in which the fibrous string, after being delivered by a feeding roller and feeding table, is combed through needle roller, and is drawn by an outgoing pair of rollers, and is twisted by a twisting element. According to the invention, first the front ends of the filaments being fed are combed through, then their rear ends with simultaneous drawing of high rate.
Upon spinning with air vortex, together with the drawing the filaments are shaped into two fibrous flows, of main filaments, and of bonding filaments; after that the fibrous flows obtained are compacted separately as main, and as bonding flows, and, in the end they are linked and compacted together, and further they undergo twisting, in which the core filaments get more torques than the wrapping filaments, which are subjected to tensile strength resulting in a uniform structure yarn.
In ring spinning, simultaneously with the extrusion the filaments are shaped in one or two fibrous flows, then the said fibrous flows are compacted into one or two according to the desired yarn structure, and then are subjected to twisting in one or two separate yarns.
The device for method realization consists of an feeding roller and feeding table located close to a needle reel having extrusion pair mounted onto it, and a twisting chamber located after said pair. According to the invention, the feeding table is shaped as a feeding arc below the feeding roller; after said arc two main arc-like surfaces are mounted covering part of the combing needle reel surface; the said reel is perforated and finishes close to a perforated extrusion cylinder with two pressing reels located over said cylinder, and in its interior a diaphragm is placed, wherein different zones of suction are formed.
In spinning with air vortex, between the pressing reels an arc-like surface is mounted at a small distance above the extrusion cylinder, and in the diaphragm zones are shaped to form a zone for filaments flows creation, a zone of filament flows compacting into main and bonding flows, and a zone for bonding flows tension, and close after it an incoming air chamber is mounted, wherein the core fibres receive more torques than the wrapping fibres which are subjected to tensile strength, after which are mounted an intermediate rotating chamber and air vortex chamber, their location being in the housing, and after that a pair of extrusion reels is mounted. In ring spinning, in the diaphragm a zone is shaped for fibrous flows forming, a zone for fibrous flows compacting, and after that a twisting spindle is mounted, located in a ring around which a traveller is rotating.
The advantages of the proposed method for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting under the invention consist of the process being continuous and very short and not ruining the string integrity, and in filaments fed being subjected to combing - first their front end, next their rear ends with simultaneous high rate extrusion, with further twisting of the fibrous sliver - first of the core filaments, then of the wrapping filaments, thus forming an uniform structure yarn with high speed of spinning.
An advantage of the device is that is not with complex construction and is easy to service as the feeding table is shaped by a feeding arc beneath the feeding roller and two main ark-like surfaces covering part of the surface of the combing needle reel which is perforated and finishes close to an extrusion pair of reels as the lower reel is perforated, and at a close distance after the line of pressing of reels a limiter of the spinning twisting triangle is placed, and at a certain distance after it a suction-twisting element is mounted, after which the main the main twisting body is placed, and it - a pair of pull-out reels.
Another advantage of the device is that it can be easily centered according the type of the filaments.
Brief Description of Drawings
The device is explained in more details in the enclosed exemplary figures, of which:
fig.1 is the principle scheme of the method of air vortex spinning
fig.2-- principle scheme of the zones of forming, compacting and control in air vortex spinning
fig.3 is the principle scheme of ring spinning
figs.4, 4a, 4b - principal schemes of the zones of forming, compacting in ring spinning
fig.5 - top view of the second arc-like surface in air vortex spinning fig.6 - view from below the second arc-like surface in ring spinning fig.7 - top view of the arc-like surface over the perforated pull-out
Description of Embodiments In the method for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting, the fibrous band 24 is delivered by and feeding roller 7 and feeding table 6 in such a way as the fed fibres 1 be subjected to continuous combing of, first, their front ends in zone β, and of, next, their rear ends in zone γ, with continuous high rate extension, while:
In air vortex spinning - during drawing the filaments are shaped λ in two fibrous flows, consisting of main filaments nl and bonding filaments n2; after that the fibrous flows obtained are compacted φ separately as main flows c and as bonding flows d, and finally they are linked and compacted together f; after that they undergo twisting with core filaments 3 receiving more torques than the wrapping filaments 4, which are subjected to tensile strength φ, which results in a uniform structure yarn 5.
In ring spinning - simultaneously with extraction the filaments are formed γ in one n or in two n-n fibrous flows; after that the fibrous flows obtained are compacted in one c or in two c-c according to the desired yarn structure and after that they are subjected to twisting into an yarn 5 or into two separate yarns 5-5.
The device for method realization consists of an feeding roller and feeding table located close to a needle reel, and has an extrusion pair mounted, after which a twisting chamber is placed. According to the invention, the feeding table 9 is shaped as a feeding funnel 7 for the fibrous sliver 6 and from a feeding arc a over the feeding roller 8, after said arc are mounted two arc-like β and γ surfaces 15 and 17, covering part of the combing needle reel surface 1 1, the said reel is perforated and finishes close to a perforated extrusion cylinder 20, over which are placed two pressing reels 22 and 23, and in its interior a diaphragm 20 is placed, wherein different zones of suction are formed:
In spinning with air vortex - between the pressing rollers 22 and 23 an arc-like surface 32 is mounted at a small distance η above the extrusion cylinder 20, and in the diaphragm 20 zones are shaped - a zone for filaments flows creation λ, a zone of filament flows compacting φ into main flows c and bonding flows d, and a zone δ for tension of bonding flows b, close to which an incoming air chamber 25 is mounted wherein the core fibres 3 receive more torques than the wrapping fibres 4 which are subjected to tensile strength, and after that are mounted an intermediate rotating chamber 26 and air vortex chamber 27, their location being in the housing 24, and after that a pair of pull-off reels 28 and 29 is mounted. In ring spinning - in the diaphragm 20 a zone is shaped for forming of fibrous flows λ, a zone for compacting of fibrous flows φ, and after that a twisting spindle 33 is mounted, located in a ring 35 around which a traveller 34 is rotating.
The two main arc-like β and γ surfaces 15 and 17 are eccentrically shaped relative to the center of the needle reel 11 with gradually decreasing centering in direction of filament movement from a - b the first zone β to b - e the second zone γ of combing.
The needle combing shaft 11 is with diameter D and is hollow; between the needle wrap 12 there are radial holes 13. In the reel interior a diaphragm 14 is mounted to regulate the vacuum which is created in the shaft 1 1. The feeding roller 8 is pressed Nl to the feeding table 9 under the force of a spring, and on its surface there are helical riffle channels. The lower drawing roller 20 is hollow and in its interior a diaphragm 21 is mounted to regulate the vacuum
The upper drawing rollers 22 and 23 are pressed N2 and N3 strongly to the lower perforated cylinder 21 under the influence of springs and this pressure can be regulated.
The twisting element 26 is shaped as a rotating fan vane and has a small central cylindrical hole. The transition from the arc a under the feeding roller 8 and the transition at the end of the feeding table 9 are smoothly shaped with rounding r. The main twisting body 27 is an air vortex jet located in a bearing housing 27.
The wrapping 12 of the combing roller 1 1 is cleaned from the short staples 31 and the other impurities by fast-rotating brush 26 with vacuum, and the vacuum tube 32 sucks in the detached impurities after the second zone γ of combing and extrusion.
The exemplary values can be within the intervals: D>35 mm; a<4 mm; b=0,2-0,5 mm' c=0,2-0,02 mm; (β+γ)=60° - 240°; r<2 mm.
Industrial Applicability
The device for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting operates in the following manner: Combing of fibre front end 1 is made by needle wrap 12 of the shaft 11 in result of the greater speed than the speed of the roller 8. The shortest fibres 1, under the friction forces of the needle wrap 12 and the vacuum in the shaft 1 1, deposit in the base of the surface of the roller 11 , and the long fibres 1 - strongly pressed and continuously fed by the roller 8, are combed by the wrap 12. When the friction force among the fibres themselves and the force of friction with the wrap 12, and the force of the vacuum in the roller 11 increases sufficiently, the fibres 1 are drawn. The fibres with combed front ends stay in the warp 12 pressed by the ever smaller centering with the feeding arcs 15 and 17, and move with the speed of the roller 1 1. When the lower drawing cylinder 20 is approached the vacuum of the shaft 11 is ceased by the diaphragm 14, and the vacuum of the shaft 20 starts acting as determined by the diaphragm 21. The fibres going out of zone γ of the feeding arc 17 under the influence of the vacuum from shat 20 and its greater speed are transferred to the surface of the shaft 20 and are strongly pressed by the upper roller 22 in the form of a fibrous sliver 2. The fibrous sliver formed in this manner starts being drawn by the pair of rollers 20 and 22 at speed greater than the speed of the roller 1 1 , thus starting the combing of their rear ends. Thus, the combing of front and rear fibres ends runs continuously and the process can be regulated according to the type of fibres. The drawing of the fibres is also running continuously with a high value, and can be regulated.
In spinning with air vortex - simultaneously with the drawing the filaments are shaped λ into two fibrous flows, of main filaments nl, and of bonding filaments n2; after that the fibrous flows obtained are compacted φ separately as main flows c and as bonding flows d, and, in the end they are linked and compacted together f, and further they undergo twisting, in which the core filaments 3 get more torques than the wrapping filaments 4, which are subjected to tensile strength δ resulting in a uniform structure yarn 5.
In ring spinning, simultaneously with the drawing the filaments are shaped λ in one n or two n-n fibrous flows, then the said fibrous flows are compacted into one c or two c-c flows according to the desired yarn structure, and after that they are subjected to twisting in one 5 or two separate yarns 5-5. The short staples and impurities 31, detached during combing in the base of wrap 12 of the shaft 1 1 are removed from the brush and vacuum 30, and the impurities detached between the shaft 1 1 and the shaft 20 are sucked in by the vacuum 32.
References cited:
1. Application US 2004/0025487, cl.D 02 Gl/02 - CH 694332
US 6058693 cl.D01H4/00

Claims

WHAT IS CLAIMED IS
1. A method for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting in which the fibrous sliver is fed by a feeding roller and a feeding table, is combed by a needle roller, is drawn by an outgoing pair of rollers, and is twisted by a twisting element; said method is characterized by the fact that the fibres being fed (1) are subjected to combing, first (β) their front ends and then (γ) their rear ends, with simultaneous extrusion of high rate, as: a) in spinning with air vortex - simultaneously with the drawing the filaments are shaped (λ) into two fibrous flows, of main filaments (nl), and of bonding filaments (n2); after that the fibrous flows obtained are compacted (φ) separately as main flows © and as bonding flows (d), and, in the end they are linked and compacted together (f), and further they are subjected to twisting, in which the core filaments (3) get more torques than the wrapping filaments (4), which are subjected to tensile strength (δ) resulting in an uniform structure yarn (5). b) in ring spinning - simultaneously with the drawing the filaments are shaped (λ) in one (n) or two (n-n) fibrous flows, then the fibrous flows obtained are compacted into one (c) or two (c-c) flows according to the desired yarn structure, and after that they are subjected to twisting in one yarn (5) or two separate yarns (5-5).
2. A method according to Claim 1, which is characterized by the facts that: a) combing of front and rear ends of fibres (1) is performed continuously and the process can be regulated in the two zones (β) and (γ) according to the type of the fibres. b) the drawing of the fibrous sliver (1) is continuous and performed in one zone (β + γ) at two levels (β) and (γ), and can be regulated, and the drawing rate is high. c) the shaping of the fibrous slivers in one or two fibrous flows is continuous and performed in a certain zone (λ) and depends on the type of twisting and can be regulated. d) the compacting of the fibrous slivers is performed continuously in zone (φ), as in spinning with air vortex the main fibres (c) get more compacted, and the bonding fibres (d) get less compacted, and after that the two zones are combined in one compacting the bonding fibres (d) to the main fibres © in such a way as their front ends are linked to the main ones and this can be regulated. e) the twisting of the compacted fibrous flows is continuous, as in spinning with air vortex the core fibres (3) get strongly twisted and the movement of the wrapping fibres (4) is controlled by the vacuum (δ) of the drawing cylinder; after that they wrap up around the core fibres (3) and form an uniform yearn (5); the process of forming of yarn (5) structure can be regulated by using two independent twisting processes - of the rotary intermediate chamber (5) and of the main twisting vortex in the spinning chamber (27). f) the twisting of the compacted fibrous flows is continuous, as in ring spinning they get strongly twisted by the twisting torque of the unit spindle (33), ring (35) and traveller (34).
3. Device for the realization of the method according to Claims 1 and 2 which consists of a feeding roller and a feeding table placed close to a needle roller having a drawing pair mounted, after which a twisting chamber is placed; said device is characterized by the feeding table (9) shaped by a feeding arc (a) under the feeding roller (8); after said arc two main arc-like (β and γ) surfaces (15 and 17) are mounted covering part of the surface of the combing needle roller (1 1), said roller is perforated and finishes close to a perforated drawing cylinder (20) with two pressing rollers (22 and 23) located over said cylinder, and in its interior a diaphragm is placed (20), wherein different zones of suction are formed, as: a) in spinning with air vortex - between the pressing rollers (22 and 23) there is an arc-like surface (32) mounted at a small distance (η) above the drawing cylinder (20), and in the diaphragm (20) there are zones shaped - a zone for fibrous flows creation( λ,) a zone of fibrous flows compacting (φ) into main flows (c) and bonding flows (d), and a zone (δ) for tension of bonding flows( b, close after which the incoming air chamber (25) is mounted wherein the core fibres (3) receive more torques than the wrapping fibres (4) which are subjected to tensile strength (δ), and after that there are mounted an intermediate rotating chamber (26) and an air vortex chamber (27), located in the housing (24), and after that a pair of pull-off rollers (28 and 29) is mounted. b) In ring spinning - in the diaphragm (20) a zone is shaped for forming of fibrous flows (λ), a zone for compacting of fibrous flows (φ), and after that a twisting spindle (33) is mounted, located in a ring (35) around which a traveller (34) is rotating.
4. Device for the realization of the method according to Claim 3 with the following characteristics: a) the two main arc-like (β and γ) surfaces (15 and 17) are eccentrically shaped relative to the center (O) of the needle reel (1 1) with gradually decreasing centering in direction of filament movement from (a-b) the first zone (β) to (b - e) the second zone (γ) of combing. b) the needle combing shaft (1 1) is with diameter D and is hollow; between the needle wrapping (12) there are radial holes (13). In the roller interior a diaphragm (14) is mounted to regulate the vacuum which is created in the shaft (11). c) the feeding roller (8) is pressed (Nl) to the feeding table (9) under the force of a spring, and on its surface there are helical riffle channels. d) the lower drawing roller (20) is hollow and in its interior a diaphragm (21) is mounted to regulate the vacuum e) the upper drawing rollers (22 and 23) are pressed (N2 and N3) strongly to the lower perforated cylinder (21) under the influence of springs and this pressure can be regulated. f) the twisting element (26) is shaped as a rotating fan vane and has a small central cylindrical hole. g) the transition from the arc (a) under the feeding roller (8) and the transition at the end of the feeding table (9) are smoothly shaped with rounding (r). h) the main twisting body (27) is an air vortex jet located in a bearing housing (27). i) the wrapping (12) of the combing roller (1 1) is cleaned from the short staples (31) and the other impurities by a fast-rotating brush (26) with vacuum, and the vacuum tube (32) sucks in the detached impurities after the second zone (γ) of combing and drawing.
PCT/BG2012/000022 2011-09-03 2012-08-27 Method and device for obtaining of staple fibre yarn in a single process of combing, drawing, and twisting Ceased WO2013029123A1 (en)

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WO2015100477A1 (en) * 2014-01-06 2015-07-09 Bahov Dinko Atanasov Method and apparatus for spinning of staple fiber yarn
WO2015131252A1 (en) * 2014-03-05 2015-09-11 Bahov Dinko Atanasov Method and apparatus for spinning a yarn from staple fibers
WO2015139096A1 (en) * 2014-03-20 2015-09-24 Bahov Dinko Atanasov Method and apparatus for spinning of staple fiber yarn
WO2016000047A3 (en) * 2014-07-01 2016-03-17 Bahov Dinko Atanasov Method and apparatus for combing and drawing of staple fibers
WO2016044900A1 (en) * 2014-09-24 2016-03-31 Bahov Dinko Atanasov Method and apparatus for spinning of staple fiber yarn
WO2017075675A1 (en) * 2015-11-06 2017-05-11 Bahova Olga Kirilova Method and apparatus for production of staple fiber yarn in a single process
CN118087102A (en) * 2024-04-26 2024-05-28 兴化市俊达纱线有限公司 Vortex spinning equipment

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WO2015100477A1 (en) * 2014-01-06 2015-07-09 Bahov Dinko Atanasov Method and apparatus for spinning of staple fiber yarn
WO2015131252A1 (en) * 2014-03-05 2015-09-11 Bahov Dinko Atanasov Method and apparatus for spinning a yarn from staple fibers
WO2015139096A1 (en) * 2014-03-20 2015-09-24 Bahov Dinko Atanasov Method and apparatus for spinning of staple fiber yarn
WO2016000047A3 (en) * 2014-07-01 2016-03-17 Bahov Dinko Atanasov Method and apparatus for combing and drawing of staple fibers
WO2016044900A1 (en) * 2014-09-24 2016-03-31 Bahov Dinko Atanasov Method and apparatus for spinning of staple fiber yarn
WO2017075675A1 (en) * 2015-11-06 2017-05-11 Bahova Olga Kirilova Method and apparatus for production of staple fiber yarn in a single process
CN118087102A (en) * 2024-04-26 2024-05-28 兴化市俊达纱线有限公司 Vortex spinning equipment

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