EP3724384B1 - Tuyaux aspirant pour un guide condenseur de fibres d'un métier à filer - Google Patents

Tuyaux aspirant pour un guide condenseur de fibres d'un métier à filer Download PDF

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Publication number
EP3724384B1
EP3724384B1 EP18814851.4A EP18814851A EP3724384B1 EP 3724384 B1 EP3724384 B1 EP 3724384B1 EP 18814851 A EP18814851 A EP 18814851A EP 3724384 B1 EP3724384 B1 EP 3724384B1
Authority
EP
European Patent Office
Prior art keywords
suction tube
suction
guide surface
longitudinal axis
section
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.)
Active
Application number
EP18814851.4A
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German (de)
English (en)
Other versions
EP3724384A1 (fr
Inventor
Gernot Schaeffler
Nora Stopp
Karlheinz Huber
Martin Widmann
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
Original Assignee
Maschinenfabrik Rieter AG
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Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP3724384A1 publication Critical patent/EP3724384A1/fr
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Publication of EP3724384B1 publication Critical patent/EP3724384B1/fr
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Classifications

    • 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

Definitions

  • the present invention relates to a suction tube for a device for compressing drafted slivers in a spinning machine.
  • Suction pipes for compression devices on drafting systems for spinning machines are each arranged subsequent to the output rollers of such a drafting system.
  • a variety of suction tubes for use in compression devices in spinning machines are known in the prior art.
  • Generic devices are known in the prior art and are always used when a fiber sliver has to be compressed in a spinning machine after a stretching process.
  • the intake manifolds are at least partially wrapped around by a perforated strap or a woven sieve strap.
  • a corresponding device is described, for example, in DE 102 61 785 A1 .
  • the suction tube disclosed therein is partially wrapped around by an air-permeable conveyor belt and has a suction slot on a side facing a sliver to be compressed.
  • the suction tube is held between two spinning positions arranged next to one another and has a suction slot for each spinning position.
  • a disadvantage of the disclosed device is that the shape of the suction tube means that additional rollers are required to drive the air-permeable means of transport. If one-sided wear occurs or the suction slot of the suction pipe needs to be changed, the suction pipe for both spinning positions must also be exchanged together.
  • the DE 10 2004 037 492 A1 discloses a suction device with a stationary sliding surface, which serves as a sliding guide for a transport apron, which transports a fiber structure to be compressed through a compression zone.
  • the suction device extends over almost the entire space between two pairs of rollers of the drafting system. A compression of the fiber structure in the compression zone can be partially lost again until it reaches the next nip point at the pair of output rollers.
  • a guide for a fibrous structure is disclosed. This guide is located above an intake manifold. Information on the configuration of the intake manifold itself cannot be found in this disclosure.
  • a branched suction system which has a suction plate and a cover plate arranged above it.
  • the suction plate, and in particular its suction slot, is far removed from a nip point of a pair of rollers of the drafting system, as a result of which compression of the fiber structure can also be lost.
  • the object of the present invention is to further develop known devices and to create a suction tube that is simple in design and can be used at individual spinning stations, which is characterized by simple attachment to existing drafting systems without the need for additional rollers. It is also the object of the present invention to create a compacting device with a suction pipe that is simple in construction and can be used at individual spinning stations, which is characterized by a uniform reduction in the hairiness of the fiber structure.
  • a suction tube for a compression device in a drafting system of a spinning machine and a compression device with a suction tube having the features of the independent patent claim.
  • the intake manifold has a longitudinal axis and a length.
  • An inner space connected to a suction opening and a suction port and a fixing portion are provided.
  • the length of the suction tube is 20 mm to 50 mm and the suction tube has a cross-section arranged perpendicular to the longitudinal axis with a flat and/or curved guide surface.
  • the suction pipe is in the form of a polygon, or a circle, or an oval, or a Triangular or kidney shaped.
  • the suction opening is arranged in the guide surface of the suction pipe, the curvature of the guide surface being less than 0.04 1/mm and an extension of the guide surface perpendicular to the longitudinal axis being 5 mm to 15 mm.
  • This construction of the suction tube makes it possible to introduce the suction tube as deeply as possible into a gusset between the exit rollers of a drafting system. As a result, a fiber bundling zone delimited by the guide surface of the suction tube can be made shorter compared to the prior art, and thus a loss of stretching of the fiber structure to be compressed in the fiber bundling zone is avoided.
  • the guide surface is delimited on both sides by an arc with a radius of 1.5 mm to 5 mm, viewed perpendicular to the longitudinal axis.
  • this allows the suction tube to be built close to the output rollers and on the opposite side, the compacted fiber structure is guided as short as possible after leaving the fiber bundling zone before it is transferred to a subsequent spinning device. This also minimizes the risk of the fiber structure being displaced laterally after compression and thus damage to the previously bundled fiber structure.
  • Preferred shapes of the cross section of the draft tube are crescent-shaped or triangular or kidney-shaped.
  • an enveloping circle which encloses a cross section arranged perpendicular to the longitudinal axis, is smaller than 15 mm, preferably smaller than 10 mm. Due to the low overall height of the suction tube, it is possible to guide or tension or deflect an air-permeable conveyor belt wrapped around the suction tube is not limited by the geometry of the intake manifold. In contrast to this, with a kidney shape of the suction pipe there is the possibility of guiding and tensioning the conveyor belt through the suction pipe alone. No additional components such as deflection rollers or tension rollers are required.
  • the fastening section and the suction connection are advantageously provided at a first end of the suction tube. This has the advantage that a connection to a vacuum system can be combined with a holder for the intake manifold.
  • the suction opening arranged in the guide surface in the suction pipe has a length or a diameter of less than 5 mm. This means that compressed air consumption can be kept low and a sufficiently high suction flow for fiber bundling can be achieved.
  • the suction opening is preferably designed in the form of a slit, the slit having a width of 0.5 mm to 3.0 mm and a length of 2.0 mm to 5.0 mm. Furthermore, the slot is arranged at an angle of 70° to 110° to the longitudinal axis of the intake manifold. By forming a slit instead of a round cross-section, a suction effect is achieved which acts on the fiber structure longer as it passes through the fiber bundling zone. The proposed arrangement of the slot achieves maximum bundling of the fiber assembly.
  • the fastening section has a cylindrical cross-section and then extends to the guide surface in the direction of the longitudinal axis.
  • This type of attachment has the advantage that the position of the suction pipe in the holder can be adjusted.
  • the attachment portion may be provided with a projection for attachment of the intake manifold in a holder. This would enable the intake manifold to be fastened in the manner of a clip to a corresponding holder. Exact positioning and easy replacement of the intake manifold are achieved with a clip-like attachment.
  • two intake manifolds arranged in mirror image have a common longitudinal axis and the fastening sections directed towards one another are connected to one another. This makes it possible to accommodate the intake manifolds for two opposing compression devices in a common holder.
  • the two mirror-inverted intake manifolds are made in one piece.
  • a device for the pneumatic compression of a drafted fiber structure in a drafting system of a spinning machine is proposed with a pair of exit rollers consisting of an exit upper roller and an exit lower roller and a screen element.
  • the device has a suction pipe according to the above description, which can be sucked in and around which a sieve element can be at least partially wrapped.
  • the suction pipe is arranged next to the pair of output rollers.
  • the suction tube is at least partially wrapped around by the screen element, with a clamping point being formed by the screen element with the output top roller in the region of the guide surface.
  • the fiber bundle emerging from the pair of output rollers hits the screen element shortly before reaching the third nip point and is guided on it to the third nip point. In this way, the fiber bundle is guided through the screen element over the guide surface and bundled by the influence of an air flow.
  • the sieve element runs around the suction pipe, which has a suction opening in the area of the guide surface. The ambient air sucked in through the suction opening means that individual fibers protruding from the fiber structure are moved to the suction opening and the fiber structure is thus bundled.
  • the nip also drives the screen element through the output top roller.
  • the frictional drive of the screen element creates a slight slip, so that the screen element has a lower speed than the output roller pair. This circumstance also contributes to the fact that a bundling of the fiber assembly, or the integration of protruding fiber ends in the fiber assembly, becomes possible.
  • FIG 1 shows a schematic representation of a longitudinal section of an intake manifold 1 according to the invention.
  • the interior space 5 is connected to the environment via a suction opening 3 .
  • a suction port 4 is provided in the attachment section 6 .
  • the interior space 5 of the intake manifold 1 can be connected to a vacuum source (not shown) via the intake connection 4 .
  • the suction tube 1 has a length A of 20 mm to 50 mm in the direction of the longitudinal axis 2 .
  • a width dimension B is indicated perpendicular to the longitudinal axis 2 .
  • the suction opening 3 is shown again in the form of a slit.
  • the slot is arranged at an angle ⁇ of 75° to the longitudinal axis.
  • FIG 2 shows a schematic representation of a cross section of an intake manifold 1 according to the invention in various embodiments.
  • a cross section of the suction pipe 1 in the form of a polygon, an oval and a triangle as well as a cross section of a suction pipe 1 with a kidney-shaped cross section are shown.
  • All suction pipes 1 have a suction opening 3 which is arranged in a region of a guide surface 7 .
  • the suction opening 3 connects an interior 5 of the suction pipe 1 with the environment.
  • the guide surface 7 has an extent C.
  • the guide surfaces 7 are delimited on both sides with an arc with a radius R. Starting from the guide surface 7, the width extent B is indicated in each of the cross sections.
  • the different cross sections differ in the direction of this width extension B.
  • An enveloping circle H enclosing the intake manifold 1 in the area of the guide surface 7 is shown for the polygonal, oval and triangular shape.
  • the intake manifolds 1 with a cross section in the form of a polygon, an oval or a triangle are designed as hollow bodies with a substantially constant wall thickness.
  • the intake manifold 1 with the kidney-shaped cross section has an interior space 5 only in the area of the guide surface 7 .
  • the entire intake manifold 1 could also be designed as a hollow body.
  • figure 3 shows a schematic representation of a longitudinal section of an embodiment according to the invention of a compression device in a drafting system.
  • a fiber structure 13 is passed through the output roller pair 9, consisting of an output upper roller 10 and an output lower roller 11 from the drafting system.
  • a suction pipe 1 is arranged downstream of the pair of output rollers 9 .
  • the intake manifold 1 is at least partially wrapped around by a sieve element 12 .
  • the screen element 12 is designed as an endless belt and stretched between a deflection 14 and the intake manifold 1 .
  • the screen element 12 forms a nip point K for the drafted fiber structure in the region of the guide surface 7 of the suction tube 1 with the output top roller 10 .
  • the shape of the intake manifold 1 is shown as an example of an oval.
  • the deflection of the sieve element 12 could be integrated into the suction pipe, as a result of which a deflection 14 independent of the suction pipe could be omitted.
  • the suction tube 1 has a suction opening 3 facing the output top roller 10 .

Landscapes

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

Claims (15)

  1. Tube d'aspiration (1) pour un dispositif de compactage dans un dispositif d'étirage d'une machine à filer, avec un axe longitudinal (2) et une longueur (A), et un espace intérieur (5) relié à une ouverture d'aspiration (3) et à un raccord d'aspiration (4) et avec une section de fixation (6),
    - le tube d'aspiration (1) présentant une section transversale disposée perpendiculairement à l'axe longitudinal (2) avec une surface de guidage (7) plane et/ou incurvée et
    - l'ouverture d'aspiration (3) est disposée dans la surface de guidage (7) du tube d'aspiration (1),
    caractérisé en ce que
    - la longueur (A) du tube d'aspiration (1) est comprise entre 20 mm et 50 mm et
    - en ce que le tube d'aspiration (1) est conçu en direction d'une étendue en largeur (B), à partir de la surface de guidage (7), sous forme de polygone ou de cercle ou d'ovale ou de triangle ou réniforme,
    - la courbure de la surface de guidage (7) étant inférieure à 0,04 1/mm, et
    - une étendue (C) de la surface de guidage (7) perpendiculairement à l'axe longitudinal (2) est de 5 mm à 15 mm.
  2. Tube d'aspiration (1) selon la revendication 1, caractérisé en ce que la surface de guidage (7), vue perpendiculairement à l'axe longitudinal (2), est limitée des deux côtés par un arc (8) d'un rayon (R) de 1,5 mm à 5 mm.
  3. Tube d'aspiration (1) selon la revendication 1 ou 2, caractérisé en ce que le tube d'aspiration (1) a une section transversale en forme de demi-lune.
  4. Tube d'aspiration (1) selon la revendication 1 ou 2, caractérisé en ce que le tube d'aspiration (1) a une section transversale triangulaire.
  5. Tube d'aspiration (1) selon la revendication 1 ou 2, caractérisé en ce que le tube d'aspiration (1) a une section transversale réniforme.
  6. Tube d'aspiration (1) selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que , vu dans la direction de l'axe longitudinal (2), la section de fixation (6) et le raccord d'aspiration (4) sont prévus à une première extrémité du tube d'aspiration (1).
  7. Tube d'aspiration (1) selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que l'ouverture d'aspiration (3) présente une longueur ou un diamètre inférieur à 5 mm.
  8. Tube d'aspiration (1) selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que l'ouverture d'aspiration (3) est en forme de fente, la fente ayant une largeur de 0,5 mm à 3,0 mm et une longueur de 2,0 mm à 5,0 mm.
  9. Tube d'aspiration (1) selon la revendication 8, caractérisé en ce que la fente est disposée selon un angle (α) de 70° à 110° par rapport à l'axe longitudinal (2) du tube d'aspiration (1).
  10. Tube d'aspiration (1) selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que la section de fixation (6) présente une section transversale cylindrique et s'étend à la suite de la surface de guidage (7) dans la direction de l'axe longitudinal (2).
  11. Tube d'aspiration (1) selon l'une quelconque ou plusieurs des revendications 1 à 10, caractérisé en ce que la section de fixation (6) est conçue comme une protubérance pour la fixation du tube d'aspiration (1) dans un support.
  12. Tube d'aspiration (1) selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que deux tubes d'aspiration (1) disposés en symétrie miroir présentent un axe longitudinal (2) commun et les sections de fixation (6) orientées l'une vers l'autre sont reliées l'une à l'autre.
  13. Tube d'aspiration (1) selon la revendication 12, caractérisé en ce que les deux tubes d'aspiration (1) disposés en symétrie miroir sont fabriqués d'une seule pièce.
  14. Dispositif pour le compactage pneumatique d'un ensemble de fibres étirées (13) dans un banc d'étirage d'une machine à filer avec une paire de cylindres délivreurs (9) composée d'un cylindre délivreur supérieur (10) et d'un cylindre délivreur inférieur (11) et un élément de tamisage (12), caractérisé en ce qu'il est prévu un tube d'aspiration (1) selon l'une quelconque ou plusieurs des revendications précédentes.
  15. Dispositif selon la revendication 14, caractérisé en ce que le tube d'aspiration (1) est entouré au moins partiellement par l'élément de tamisage (12) et en ce qu'un point de serrage (K) avec le cylindre délivreur supérieur (10) est formé par l'élément de tamisage (12) dans la zone de la surface de guidage (7).
EP18814851.4A 2017-12-15 2018-12-03 Tuyaux aspirant pour un guide condenseur de fibres d'un métier à filer Active EP3724384B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01529/17A CH714446A1 (de) 2017-12-15 2017-12-15 Saugrohr für eine Verdichtungsvorrichtung einer Spinnmaschine.
PCT/EP2018/083332 WO2019115268A1 (fr) 2017-12-15 2018-12-03 Tube d'aspiration pour un dispositif de compression d'un métier à filer

Publications (2)

Publication Number Publication Date
EP3724384A1 EP3724384A1 (fr) 2020-10-21
EP3724384B1 true EP3724384B1 (fr) 2023-06-21

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ID=64606984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18814851.4A Active EP3724384B1 (fr) 2017-12-15 2018-12-03 Tuyaux aspirant pour un guide condenseur de fibres d'un métier à filer

Country Status (5)

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EP (1) EP3724384B1 (fr)
CN (1) CN111465729B (fr)
CH (1) CH714446A1 (fr)
ES (1) ES2955830T3 (fr)
WO (1) WO2019115268A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111607854A (zh) * 2020-05-19 2020-09-01 嘉兴学院 一种罗拉牵伸机构主牵伸区纤维的引导方法与引导组件

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19906821A1 (de) * 1999-02-18 2000-08-24 Stahlecker Fritz Vorrichtung zum Verdichten eines verstreckten Faserverbandes
EP1134309B1 (fr) * 2000-03-08 2003-12-17 Zinser Textilmaschinen GmbH Dispositif d'étirage suit par une zone de condensation dans une machine de filature
DE10052878A1 (de) * 2000-10-19 2002-05-08 Stahlecker Fritz Verfahren zum Umrüsten einer Streckwerksstanze
DE10261785A1 (de) 2002-12-23 2004-07-01 Wilhelm Stahlecker Gmbh Vorrichtung an einer Spinnmaschine zum Verdichten eines Faserverbandes
DE102004037492A1 (de) * 2004-07-26 2006-03-23 Wilhelm Stahlecker Gmbh Transportriemchen für ein Spinnmaschinenstreckwerk
CN2820890Y (zh) * 2005-05-16 2006-09-27 东台纺织机械有限责任公司 紧密纺纱装置的异形吸气管组件
DE102005058756A1 (de) * 2005-12-05 2007-06-06 Spindelfabrik Suessen Gmbh Saugkanal für eine Faserbündelungseinrichtung
CN201095668Y (zh) * 2007-09-20 2008-08-06 浙江泰坦股份有限公司 一种紧密纺纱机异型吸气管
EP2161356B1 (fr) * 2008-09-03 2012-10-31 Maschinenfabrik Rieter Ag Machine à filer doté d'un dispositif de condensation pneumatique
DE102009057344A1 (de) * 2009-12-07 2011-06-09 Rotorcraft Ag Streckwerk zum Verzug von Faserbändern und Spinnereimaschine mit wenigstens einem derartigen Streckwerk
CN202323207U (zh) * 2011-07-12 2012-07-11 汤永学 一种组合式细纱机碳纤下销
CN203846173U (zh) * 2013-01-30 2014-09-24 拉卡什米机械厂有限公司 一种紧密纺纱机的改进设备
CN203096269U (zh) * 2013-01-31 2013-07-31 常州市同和纺织机械制造有限公司 环锭细纱机用于负压集聚纺纱装置的异形管防磨损机构
CN203284527U (zh) * 2013-05-17 2013-11-13 倪伯忠 新型碳纤上销
ITBS20130120A1 (it) * 2013-08-05 2015-02-06 Marzoli Spa Dispositivo di compattazione di un nastro di fibre tessili in un filatoio
DE102013113406A1 (de) * 2013-12-03 2015-06-03 Maschinenfabrik Rieter Ag Einsatz und Spinnmaschine
JP6164190B2 (ja) * 2014-10-10 2017-07-19 株式会社豊田自動織機 紡機における特殊糸製造装置
CN105220281B (zh) * 2015-07-30 2017-09-19 东华大学 一种集聚赛络纺专用单缝式集聚气体导流装置
DE102015013571A1 (de) * 2015-10-20 2017-04-20 Saurer Germany Gmbh & Co. Kg Doppelriemchen-Streckwerk, Führungsmittel und Verfahren zum Verdichten eines Faserverbands
CN105671704A (zh) * 2016-04-25 2016-06-15 上海申安纺织有限公司 一种四罗拉紧密纺设备

Also Published As

Publication number Publication date
ES2955830T3 (es) 2023-12-07
CN111465729B (zh) 2022-09-20
WO2019115268A1 (fr) 2019-06-20
CH714446A1 (de) 2019-06-28
EP3724384A1 (fr) 2020-10-21
CN111465729A (zh) 2020-07-28

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