EP1335050B1 - Machine textile comprennant un canal pour alimenter des fibres et une surface pour guider des fibres - Google Patents

Machine textile comprennant un canal pour alimenter des fibres et une surface pour guider des fibres Download PDF

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Publication number
EP1335050B1
EP1335050B1 EP03000507A EP03000507A EP1335050B1 EP 1335050 B1 EP1335050 B1 EP 1335050B1 EP 03000507 A EP03000507 A EP 03000507A EP 03000507 A EP03000507 A EP 03000507A EP 1335050 B1 EP1335050 B1 EP 1335050B1
Authority
EP
European Patent Office
Prior art keywords
fibre
fiber
edge
channel
staple
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.)
Expired - Lifetime
Application number
EP03000507A
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German (de)
English (en)
Other versions
EP1335050A3 (fr
EP1335050A2 (fr
Inventor
Peter Anderegg
Dr. Herbert Stalder
Dr. Peter Artzt
Heinz Müller
Kurt Ziegler
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.)
Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP1335050A2 publication Critical patent/EP1335050A2/fr
Publication of EP1335050A3 publication Critical patent/EP1335050A3/fr
Application granted granted Critical
Publication of EP1335050B1 publication Critical patent/EP1335050B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-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
    • D01H4/02—Open-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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-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
    • D01H4/38—Channels for feeding fibres to the yarn forming region

Definitions

  • the present invention relates to an apparatus for producing a spun yarn from a staple fiber composite according to the preamble of claim 1.
  • Such devices are known in the textile industry and are used in air spinning processes. Such a device discloses, for example, the font EP 854 214 (Equivalent to US 5,927,062 ), which in the FIG. 1 will be shown. It can be seen how a staple fiber strand 1 is supplied by a pair of outfeed rollers 2 (usually a drafting system) and passes through a fiber guiding element 3.
  • the fiber guiding element 3 has a fiber conveying channel 4 with a helical fiber guiding surface 5.
  • the staple fiber strand 1 is passed through the fiber guide surface 5, which ends at a fiber discharge edge 6.
  • a spindle 7 is provided with a Garn arrangementskanal 8 and the Garn Entryskanal 8 associated inlet port 9.
  • a fluid means for generating a vortex flow around the inlet port 9 is provided (fluid means not shown).
  • the fluid device generates a vortex flow 11 around the inlet mouth 9 or around the spindle 7.
  • the generated vortex flow 11 causes the free fiber ends 12 of the staple fiber structure 1 to surround the inlet mouth 9.
  • the movement of the fiber structure 1 in the direction of the arrow produces a relative rotating movement
  • the free fiber ends 12 around the inlet mouth 9 and thereby to the fiber structure 1. From the staple fiber strand 1 thus results in a spun yarn 10th
  • the present invention is concerned with the design of fiber guiding elements, such as the FIG. 1 shows.
  • the invention is particularly concerned with the design of fiber conveying channels and the associated fiber guiding surfaces.
  • FIG. 2 Another prior art, according to the Japanese script JP 3-10 63 68 , show the Figures 2 and 2a , In the FIG. 2 are essentially the same components as in the FIG. 1 shown (with a change, see FIG. 2a ). In particular, the outlet roller pair 2 and the spindle 7 with the Garn Adjustskanal 8 can be seen. Analogous to FIG. 1 Here, too, a fluid device 13 for generating a turbulent flow is shown. In this case, the fluid device 13 consists of a plurality of bores from which a fluid (preferably air) is injected under pressure into the space 14. The injected compressed air generates a vortex flow around the inlet mouth 9 of the spindle 7. As can be seen, the fiber guiding element 3a consists of two components.
  • a fluid preferably air
  • FIG. 2a In the FIG. 2a is the fiber guide element part 3b of FIG. 2 shown in a three-dimensional view.
  • the fiber guide element part 3b In contrast to FIG. 1 the fiber guide element part 3b has no helical but a flat fiber guide surface 15.
  • FIG. 1 lies in the absence of a fiber delivery edge. Instead of the fiber discharge edge, the fiber guide element part 3b has a blunt cone 16.
  • the purpose of this cone 16 is to produce a so-called false twine core. This is intended to prevent a false twist (twisting of the staple fiber strand) from the inlet mouth 9 propagating backwards through the fiber guide element 3 up to the nip of the pair of outlet rollers 2.
  • a false twist prevents a true turning or twisting of the free fiber ends 12 to form a yarn, because the core of the staple fiber strand rotates with the free fiber ends 12 with. That is, the false twist would prevent spinning of the fibers.
  • Attempts are made to realize the twist stop by the helical fiber guide surface 5, which is to make it impossible to twist the staple fiber strand 1 against the outlet rollers 2.
  • FIGS. 1 and 2 The well-known state of the art FIGS. 1 and 2 has various disadvantages which the device according to the invention attempts to eliminate or to minimize.
  • a disadvantage of in the FIGS. 1 . 2 and 2 A devices shown, for example, is that the fiber guide in the fiber guide element 3 or 3a is uncertain and that the function of the twist stop is not properly met under all conditions.
  • Another disadvantage is that the swirl stop shown in the figures can impede optimal fiber guidance.
  • Another critical issue that has not yet been satisfactorily solved in all previously cited published or unpublished documents is the guidance of the fiber structure between the nip line of the outfeed roller pair and the fiber guiding element (see, for example FIG. 1 or 2 ).
  • the staple fiber composite which consists of individual parallelized and untwisted fibers, has a relatively low strength, or a relatively low internal cohesion. Due to the (relatively high) rotational speeds of the outlet roller pair, air flows are created in the interstice between the nip line and the fiber guide element, which can disturb the flow of the staple fiber strand at this point. This influence can not only lead to a tearing of the staple fiber strand, but also affect the fiber guide itself and thus exert a negative influence on the yarn quality.
  • the object of the present invention is to eliminate or minimize the disadvantages of the prior art.
  • the fiber guide should in particular be designed such that the yarn quality of the spun yarn is improved.
  • the figure shows a device for producing a spun yarn with a fiber guide element 3c designed according to the invention, a fluid device 13 for producing a vortex flow 11 around the inlet mouth 9 of a spindle 7 with integrated yarn guide channel 8.
  • Die Fig. 3 shows a cross section of the device parallel to the conveying direction of the staple fiber strand (which is not shown in this figure).
  • the fiber guide element 3c shown in the figure has a fiber guide surface 18 according to the invention with a deflection point 17.
  • the deflection point 17 is in This example is formed by the design of the inventive fiber guide surface 18.
  • the fiber guiding surface 18 actually consists of two flat surfaces whose common cutting line forms the deflection point 17.
  • the fibers of the staple fiber strand are guided in a substantially flat arrangement lying next to one another.
  • a contribution to this flat arrangement also provides the fiber delivery edge 6.
  • the deflection point 17 (which is here formed as an additional edge) is dimensioned so that the fibers of the staple fiber strand are deflected such that the free fiber ends of the fibers, which are in the staple fiber composite, can take off (see Fig. 4 ).
  • the front as well as the rear fiber ends are lifted above all those fibers which are located on the surface of the staple fiber strand or immediately below.
  • both front and rear fiber ends are lifted.
  • the lifting of fiber ends at the deflection point 17 increases the number of free fiber ends in the staple fiber structure.
  • free fiber ends is meant those ends which are not within the staple fiber strand or are not connected to other fibers and thereby can be caught by the swirling flow.
  • By increasing the number of free fiber ends increases the number of Umwindefasern in the yarn and the quality of the spinning process itself. Overall, this can therefore increase the yarn quality.
  • the design of a deflection point such that the inventive effect of lifting the free fiber ends arises is therefore essential.
  • the international application PCT-CH 01-00569 The applicant shows in their figures and explained in their description an increase in their fiber guide surface.
  • the inventive design of the fiber guide surface has surprisingly a further advantage over the prior art.
  • the reduction of the cross section A of the fiber conveying channel 4 within a range has shown that the amount of air V flowing through was surprisingly increased. Due to the increased air flow V, the fiber guide between the outlet rollers and the input of the fiber guide element 3c, ie before the fiber guide element, could be substantially improved. The number of production interruptions, caused by breaks of the staple fiber bandage immediately after the discharge rollers, could be reduced. Likewise a measurable improvement of the yarn quality could be determined.
  • the cross section A of the fiber conveying channel 4 remains constant up to the deflection point 17 and from the deflection point or additional edge 17 the following cross-section B of the fiber conveying channel increases (see Fig. 3e ).
  • the cross sections A of the fiber conveying channel to the deflection point an amount of 0.5 to 10 mm 2 , preferably from 2 to 5 mm 2 , on.
  • the Fig. 3a shows a section according to the section lines II of the inventive device of Fig. 3 , Particularly well recognizable is the flat, inventive fiber guide surface 18 and the fiber discharge edge 6.
  • the fiber guide surface according to the invention has a convex, concave or selected surface. This deviation from the inherently optimal shape of the flat surface is particularly recommended in cases where the staple fiber composite has "sticky” or “slippery” fibers.
  • the embodiment according to Fig. 3b with the concave fiber guide surface 18.1 is particularly suitable for "slippery" fibers, which have a weak, mutual adhesion.
  • a convex variant of the fiber guide surface 18.2 according to the invention may be suitable for "sticky" fibers which have a stronger adhesion to one another (cohesion of the fibers is loosened, as a result of which more free fiber ends can arise).
  • the Fig. 3d shows a wavy fiber guide surface 18.3. This can help to obtain a flatter arrangement of fibers in the staple fiber strand.
  • the Fig. 3e was already explained; it shows how the cross section B of the fiber conveying channel after the deflection point (outline shown in dashed lines) is larger by the hatched area.
  • the Fig. 4 shows the same embodiment of the invention as Fig. 3 ,
  • the staple fiber strand 20 can be seen here.
  • the free fiber ends 19 of the fibers in the staple fiber strand 20 can stand out (shown by way of example). It can be seen that the free fiber ends 19 include both front and rear fiber ends (corresponding left or right of the deflection point 17).
  • the staple fiber strand 20 has more free fiber ends after passing through the deflection point 17. These free fiber ends can be better detected by the vortex flow 11 and placed around the inlet port 9.
  • the Fig. 4 a shows a section II of Fig. 4 , It can be seen how the staple fiber strand 20 has a flat configuration.
  • Fig. 5 shows a further variant of the invention, in which the fiber guide surface 22 has a cylindrical trough (fiber guide surface in front of the deflection point 17 is flat). This trough shape of the fiber guide surface 22 leads to a concave fiber delivery edge 6.1. Also shown is the end face 21 of the fiber delivery edge 6.1. How to get the other one Figures 5 a and 5 b can also take (make cuts of the Fig. 5 is) in this embodiment of the invention, the end face 21 is substantially perpendicular to the fiber delivery edge 6.1, and the yarn guide channel. 8
  • the end face can also have other shapes.
  • the end face 21 can be perpendicular to a straight discharge edge 6. It can also, like the Fig. 6b shows, have a convex shape (21.1) or, like the Fig. 6c shows, have a concave shape (21.2).
  • the fiber delivery edge 6 and the end face 21 do not have the full width of the fiber guide element 3c.
  • the width of the fiber guiding element 3c may conically taper in the vicinity of the fluid device 13, so the fiber delivery edge 6 and the end face 22.1 or 22.2 have only the width G (compare with FIG Fig. 6 a) ,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (13)

  1. Dispositif pour fabriquer un fil filé (10) à partir d'un assemblage de fibres discontinues (1), contenant un canal de transport de fibres avec une surface de guidage des fibres, la surface de guidage des fibres se terminant par une arête de décharge des fibres,
    caractérisé en ce que
    la surface de guidage des fibres (18, 18.1, 18.2, 18.3) est disposée de telle sorte que les fibres de l'assemblage de fibres discontinues (20) soient guidées dans un agencement disposé essentiellement à plat les unes à côté des autres, et en ce que
    la surface de guidage des fibres (18, 18.1, 18.2, 18.3) présente un point de renvoi (17) qui provoque un renvoi de l'assemblage de fibres discontinues (20), le renvoi étant tel que les extrémités libres (19) des fibres se soulèvent dans l'assemblage de fibres discontinues (20).
  2. Dispositif selon la revendication 1, caractérisé en ce que la section transversale (A) du canal de transport des fibres (4) reste essentiellement constante jusqu'au point de renvoi (17), la section transversale (B) du canal de transport des fibres (4) augmentant après le point de renvoi jusqu'à l'extrémité du canal de transport des fibres (4).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le point de renvoi (17) est formé par la configuration de la surface de guidage des fibres (18, 18.1, 18.2, 18.3).
  4. Dispositif selon la revendication 3, caractérisé en ce que le point de renvoi (17) est formé par une arête supplémentaire à partir de laquelle la surface de guidage des fibres (18, 18.1, 18.2, 18.3) se poursuit avec une inclinaison par rapport au plan d'origine.
  5. Dispositif selon la revendication 4, caractérisé en ce que l'arête supplémentaire présente une distance prédéfinie (C) à l'arête de décharge des fibres (6), la distance (C) ayant une valeur de 1 mm à 4 mm, de préférence de 1,5 mm à 2,5 mm.
  6. Dispositif selon la revendication 4, caractérisé en ce que l'arête supplémentaire présente une distance prédéfinie (D) à l'arête de décharge des fibres (6), la distance (D) valant 0,2 mm à 1 mm, de préférence 0,4 mm à 0,7 mm.
  7. Dispositif selon la revendication 4, caractérisé en ce que la forme de l'arête supplémentaire est droite, concave, convexe, ou cintrée suivant une combinaison concave-convexe-concave.
  8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'arête de décharge des fibres (6) présente un renfoncement concave (6.1).
  9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'arête de décharge des fibres (6) présente une surface frontale (21) essentiellement perpendiculaire à l'axe médian (23) du canal de guidage du fil (8).
  10. Dispositif selon la revendication précédente, caractérisé en ce que la surface frontale est concave (21.2), convexe (21.1) ou de forme ondulée.
  11. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la section transversale (A) du canal de transport des fibres (4) allant jusqu'au point de renvoi (17) présente une valeur de 0,5 à 10 mm2, de préférence de 2 à 5 mm2.
  12. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, vu dans la direction de transport des fibres, après le canal de transport des fibres (4) et l'arête de décharge des fibres (6, 6.1),
    une broche (7) est disposée à une distance (E) et présente un canal de guidage de fil (8) avec une embouchure d'entrée (9),
    un dispositif à fluide (13) pour la production d'un courant tourbillonnaire (11) autour de l'embouchure d'entrée (9) étant prévu autour de l'embouchure d'entrée (9) du canal de guidage de fil (8).
  13. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que l'arête de décharge des fibres (6, 6.1)
    présente la distance prédéfinie (E) à l'embouchure d'entrée (9), la distance (E) valant de 0,1 mm à 1 mm, de préférence de 0,3 mm à 0,7 mm, et/ou
    présente une distance prédéfinie (F) à l'axe médian (23) du canal de guidage de fil (8), la distance (F) représentant 10% à 40% du diamètre du canal de guidage de fil (8).
EP03000507A 2002-02-12 2003-01-09 Machine textile comprennant un canal pour alimenter des fibres et une surface pour guider des fibres Expired - Lifetime EP1335050B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2352002 2002-02-12
CH2352002 2002-02-12

Publications (3)

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EP1335050A2 EP1335050A2 (fr) 2003-08-13
EP1335050A3 EP1335050A3 (fr) 2004-01-14
EP1335050B1 true EP1335050B1 (fr) 2008-07-16

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EP03000507A Expired - Lifetime EP1335050B1 (fr) 2002-02-12 2003-01-09 Machine textile comprennant un canal pour alimenter des fibres et une surface pour guider des fibres

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US (1) US6928803B2 (fr)
EP (1) EP1335050B1 (fr)
JP (1) JP4511799B2 (fr)
CN (1) CN100537864C (fr)
AT (1) ATE401440T1 (fr)
DE (1) DE50310137D1 (fr)

Cited By (1)

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CN104233530A (zh) * 2013-06-14 2014-12-24 里特机械公司 纺纱喷嘴和装配有纺纱喷嘴的喷气式纺纱机的纺纱站

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JP4921685B2 (ja) * 2000-09-22 2012-04-25 マシーネンファブリク リーター アクチェンゲゼルシャフト 紡績装置
CN1878895B (zh) * 2003-11-11 2010-09-01 里特机械公司 具有纤维引导元件的纺纱部位
EP1584715A1 (fr) * 2004-04-07 2005-10-12 Maschinenfabrik Rieter Ag Procédé pour fabriquer un fil dans un métier à filer à vortex d'air
DE102007013109A1 (de) * 2007-03-15 2008-09-18 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Vorrichtung zur Verarbeitung von Fasermaterial
JP5549551B2 (ja) * 2010-11-10 2014-07-16 村田機械株式会社 空気紡績装置を用いた紡績方法及び空気紡績装置
JP2012102432A (ja) * 2010-11-10 2012-05-31 Murata Mach Ltd 空気紡績装置、紡績ユニット及び空気紡績装置を用いた紡績方法
DE102013003408A1 (de) * 2013-02-28 2014-08-28 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zum pneumatischen Fördern und Führen eines multifilen Fadens
WO2016203641A1 (fr) * 2015-06-19 2016-12-22 株式会社ダイセル Procédé permettant de fabriquer une matière à base de fibres ouvertes formée d'une étoupe de longues fibres
CH712409A1 (de) * 2016-04-29 2017-10-31 Rieter Ag Maschf Luftspinnmaschine sowie Verfahren zur Herstellung eines Garns.
US10995430B2 (en) * 2018-11-20 2021-05-04 Amrapur Overseas, Inc. Yarn manufacturing
DE102019100306A1 (de) * 2019-01-08 2020-07-09 Maschinenfabrik Rieter Ag Faserführungselement für eine Spinndüse sowie damit ausgestattete Spinndüse
JP2021042508A (ja) * 2019-09-13 2021-03-18 村田機械株式会社 空気紡績装置及び空気紡績機

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Publication number Priority date Publication date Assignee Title
CN104233530A (zh) * 2013-06-14 2014-12-24 里特机械公司 纺纱喷嘴和装配有纺纱喷嘴的喷气式纺纱机的纺纱站
CN104233530B (zh) * 2013-06-14 2018-09-18 里特机械公司 纺纱喷嘴和装配有纺纱喷嘴的喷气式纺纱机的纺纱站

Also Published As

Publication number Publication date
JP2003268636A (ja) 2003-09-25
CN1438366A (zh) 2003-08-27
EP1335050A3 (fr) 2004-01-14
US20030177751A1 (en) 2003-09-25
US6928803B2 (en) 2005-08-16
DE50310137D1 (de) 2008-08-28
CN100537864C (zh) 2009-09-09
JP4511799B2 (ja) 2010-07-28
EP1335050A2 (fr) 2003-08-13
ATE401440T1 (de) 2008-08-15

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