EP1473388B1 - Vorrichtung zur Faserbündelung für Spinnmaschinen - Google Patents

Vorrichtung zur Faserbündelung für Spinnmaschinen Download PDF

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Publication number
EP1473388B1
EP1473388B1 EP04380069.7A EP04380069A EP1473388B1 EP 1473388 B1 EP1473388 B1 EP 1473388B1 EP 04380069 A EP04380069 A EP 04380069A EP 1473388 B1 EP1473388 B1 EP 1473388B1
Authority
EP
European Patent Office
Prior art keywords
tubular element
drive cylinder
sliver
bands
condensing
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
EP04380069.7A
Other languages
English (en)
French (fr)
Other versions
EP1473388A2 (de
EP1473388A3 (de
Inventor
José Figuls Prat
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP1473388A2 publication Critical patent/EP1473388A2/de
Publication of EP1473388A3 publication Critical patent/EP1473388A3/de
Application granted granted Critical
Publication of EP1473388B1 publication Critical patent/EP1473388B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control
    • 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
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons

Definitions

  • the present invention relates to a device for condensing the fibres in the sliver in spinning machines, having significant characteristics of novelty and inventive step.
  • the device to which the present invention relates is intended to condense the fibre sliver that issues from the draw-frame in spinning machines, significantly reducing the effect of fibres protruding from the sliver, which create the effect known as "hairs" due to faults in the condensing of the sliver.
  • the present invention provides a system for condensing after drawing and before twisting, by means of an aerodynamic arrangement, of which the degree of condensing depends on the quantity and diameter of the holes in a band or "bag” transporting the bundle of fibres, of which the perforated bag is subjected to suction through one or more grooves, in such a way that, after being drawn and before being twisted, the fibres are placed above the perforated bag which travels at a speed somewhat higher than said first line cylinder or forming cylinder, performs condensing drawing with slight tension of the fibres and helps to orient them longitudinally.
  • One or more grooves that are straight or inclined in the direction of the fibres are connected to a suction source creating a transverse force that condenses the fibres deposited above the perforated bag.
  • the width of the fibres is reduced by means of this arrangement, and this reduces and almost eliminates the so-called spinning triangle, and orients and integrates the fibres uniformly in the cross section of the yarn, thus improving the arrangement of the fibres, reducing the quantity of unintegrated fibres, reducing hairiness or fluffiness, reducing variation in the diameter of the yarn through less loss of fibres through suction, and reducing points that are thin, thick, etc. Hence, a cleaner, more regular and better quality yarn may be obtained through the application of the present invention.
  • the document EP 1 300 495 A1 discloses a device for condensing according to the preamble of claim 1.
  • the yarn will be twisted, allowing a yarn with very advantageous properties for the spinning process and for the subsequent processes of dyeing, weaving, etc. to be obtained.
  • Fig. 1 is a diagrammatic view of the arrangement of rollers of said first, second and third lines in a conventional drawing system.
  • Fig. 2 is a diagrammatic view similar to Fig. 1 of a condensing device according to the present invention.
  • Fig. 3 is a diagrammatic cross section of the device according to the present invention.
  • Fig. 4 is a cross section of the actual device according to the invention.
  • Fig. 5 is a perspective view of the actual device according to the invention, from the driving side.
  • the entering fibre bundle 1 is received by a first roller 2 rotating at low speed, then passes to the second rollers 3 rotating at a slightly higher speed than the roller 2 and performing with respect thereto what is known as preliminary drafting, and then passes to a third roller 4 revolving at a much higher speed of approximately 12 to 80 times the speed of the roller 2 performing the main drawing.
  • the sliver 1 has been reducing to a much narrower, sufficiently parallel sliver 5.
  • said spinning triangle 6 is formed, of which the vertex has been produced by the twisting of the yarn 8.
  • the present invention provides for the arrangement, after the conventional roller 4, of a condensing device which is formed as shown diagrammatically in Fig. 2 by means of a tubular element 20 connected to a source of vacuum, and has transverse grooves that are inclined or straight 7, single or multiple, and are covered by a band 9 provided with micro-orifices, all of which is shown in more detail in Fig. 3 et seq., so the suction which is produced in the tubular element 20 and transmitted by the single or multiple grooves 7 contributes to condensing of the sliver, making it parallel and preventing the protrusion of transverse fibres, so the spinning triangle, from the point 10 from which the yarn is subjected to twisting 11, is reduced to a minimum value.
  • the tubular element 20 has a concave side adapted externally to a part of the drive cylinder.
  • the tubular element 20 is of a specific, substantially trapezoidal form, having in its upper gently curved side the grooves 7 over which there runs the perforated band, also called perforated bag 9, which is tensioned and guided by a longitudinal bar 12 provided with small longitudinal recesses, as can be seen in said Fig. 3 , for housing the band or bag 9, which is actuated by the cylinder 13. While a roller covered with synthetic rubber 14 rests on the perforated band or bag 9 through the pressure applied by the spring 15.
  • the cylinder 13 has a toothed pinion 16 which meshes with the transmission wheel 17 of a transmission shaft 18.
  • Said shaft 18 is connected to the following section of the spinning machine, running along the whole length thereof.
  • a servomotor will actuate the shaft 18, allowing its speed to be changed to achieve optimum condensing drawing.
  • the pinion 16 and the wheel 17 are enclosed inside a surrounding case or housing 19 to prevent the entry of dirt, and guarantee lubrication.
  • these gears can be replaced by toothed wheels at 45o to perpendicular shafts when there is not enough space to install the shaft 18 beneath the cylinder 13 and it must be placed behind the drawing entry cylinder.
  • the driving shaft takes its power directly from the drive shaft of the unit, which helps avoid mechanical problems of breakage of the shaft used in the draw-frames for the normal driving of the rollers, if the device according to the invention is to be incorporated into spinning machines that are already in operation.
  • a further important advantage of the device according to the present invention is the low sensitivity of the precise diameter of the levelling rollers, since precision of levelling is not required, given the general arrangement of the device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Claims (2)

  1. Vorrichtung zum Verdichten eines Faserbandes (5) in Spinnmaschinen, die umfasst:
    - ein rohrförmiges Element (20), das am Auslass eines Endpaars von Walzen (4) eines Streckwerks einer Spinnmaschine angeordnet sein kann, das
    ∘ parallel zur Achse der besagten Walzen (4) angeordnet und
    ∘ mit einer Unterdruckquelle verbunden sein kann,
    - wobei das rohrförmige Element (20) mit vielfachen Quernuten (7) für verschiedene Streckwerke der Spinnmaschine ausgestattet ist, und
    - Bänder (9), die auf dem rohrförmigen Element (20) laufen,
    - wobei jedes Band (9) kleine Perforationen aufweist und es wiederum auf seiner vom besagten rohrförmigen Element (20) entfernten Fläche das Faserband (5) aufnehmen kann, das das Streckwerk verlässt und das Querverdichten des besagten Faserbands durchführt, wenn es sich an die leeren Nuten durch das perforierte Band anpasst,
    - wobei das rohrförmige Element (20) einen sanft gekrümmten Aufbau im Anpassungsbereich des perforierten Bandes aufweist, wobei
    - die Vorrichtung weiter umfasst:
    ∘ einen Antriebszylinder (13) innerhalb der perforierten Bänder (9) und
    ∘ eine obere Walze (14), wobei
    ▪ der Antriebszylinder (13) die besagte tangentiale obere Walze (14) annimmt und
    ▪ die obere Walze (14) eine elastische Eigenschaft aufweist,
    dadurch gekennzeichnet, dass
    - die besagten Bänder (9) montiert sind in Kontakt
    ∘ mit dem Teil des rohrförmigen Saugelementes (20), das die Nuten (7) aufweist,
    ∘ mit einem Umfangsbereich des Antriebszylinders (13) und
    ∘ mit einer Stange (12), an der kleine Längsvertiefungen zum Spannen und Führen der besagten Bänder (9) vorgesehen sind,
    - der Antriebszylinder (13) durch eine Längs-Übertragungswelle (18) angetrieben ist, die entlang der besagten verschiedenen Streckwerke der Spinnmaschine angeordnet sein kann,
    - der besagte Antriebszylinder (13) ein Zahnrad (16) aufweist, das in ein Übertragungsrad (17) der besagten Übertragungswelle (18) eingreift,
    - die besagte Längs-Übertragungswelle (18) durch einen Servomotor angetrieben ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das rohrförmige Element (20) eine konkave Seite aufweist, die außen an einen Teil des Antriebszylinders (13) angepasst ist.
EP04380069.7A 2003-04-30 2004-03-30 Vorrichtung zur Faserbündelung für Spinnmaschinen Expired - Lifetime EP1473388B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200301064U ES1054642Y (es) 2003-04-30 2003-04-30 "dispositivo para la condensacion de fibras en maquinas de hilatura"
ES200301064U 2003-04-30

Publications (3)

Publication Number Publication Date
EP1473388A2 EP1473388A2 (de) 2004-11-03
EP1473388A3 EP1473388A3 (de) 2005-08-31
EP1473388B1 true EP1473388B1 (de) 2015-03-18

Family

ID=27838475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04380069.7A Expired - Lifetime EP1473388B1 (de) 2003-04-30 2004-03-30 Vorrichtung zur Faserbündelung für Spinnmaschinen

Country Status (2)

Country Link
EP (1) EP1473388B1 (de)
ES (1) ES1054642Y (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10343316A1 (de) * 2003-09-10 2005-04-14 Wilhelm Stahlecker Gmbh Vorrichtung an einer Spinnmaschine zum Verdichten eines Faserverbandes
ES2215487B1 (es) * 2004-03-11 2005-08-01 Pinter, S.A. Dispositivo de accionamiento para los mecanismos de condensacion de fibras en trenes de estiraje de maquinas de hilatura.
ES2215488B1 (es) * 2004-03-11 2005-08-01 Pinter, S.A. Perfeccionamientos en los trenes de estiraje de maquinas de hilatura.
DE102007015694A1 (de) * 2007-03-31 2008-10-02 Oerlikon Textile Gmbh & Co. Kg Spinnmaschine
DE202007011954U1 (de) * 2007-08-23 2007-10-18 Wilhelm Stahlecker Gmbh Streckwerk und Unterwalzen-Lagerschlitten
CN109735972B (zh) * 2019-03-13 2023-09-12 无锡市和展机电技术有限公司 交变牵伸双通道纺纱装置及变支变比变捻纱线的纺制方法
JP2023108077A (ja) 2022-01-25 2023-08-04 株式会社豊田自動織機 紡機の繊維束集束装置
JP2023108076A (ja) 2022-01-25 2023-08-04 株式会社豊田自動織機 紡機の繊維束集束装置
EP4279645A1 (de) 2022-05-17 2023-11-22 Kabushiki Kaisha Toyota Jidoshokki Faserbündelkondensationsvorrichtung für eine spinnmaschine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07145520A (ja) * 1993-11-20 1995-06-06 Nippon Boseki Yohin Kenkyusho:Kk 練条機の駆動制御装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10104803A1 (de) * 2001-01-29 2002-08-01 Stahlecker Fritz Spinnmaschine mit einer Vielzahl nebeneinander angeordneter Spinnstellen
JP3820951B2 (ja) * 2001-10-04 2006-09-13 株式会社豊田自動織機 紡機における繊維束集束装置
DE10227463C1 (de) * 2002-06-20 2003-10-16 Zinser Textilmaschinen Gmbh Ringspinnmaschine mit Streckwerken und Verdichtungsvorrichtungen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07145520A (ja) * 1993-11-20 1995-06-06 Nippon Boseki Yohin Kenkyusho:Kk 練条機の駆動制御装置

Also Published As

Publication number Publication date
ES1054642Y (es) 2003-12-01
ES1054642U (es) 2003-08-16
EP1473388A2 (de) 2004-11-03
EP1473388A3 (de) 2005-08-31

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