EP4015682B1 - Poste de travail d'un métier à filer à jet d'air - Google Patents

Poste de travail d'un métier à filer à jet d'air Download PDF

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Publication number
EP4015682B1
EP4015682B1 EP20215368.0A EP20215368A EP4015682B1 EP 4015682 B1 EP4015682 B1 EP 4015682B1 EP 20215368 A EP20215368 A EP 20215368A EP 4015682 B1 EP4015682 B1 EP 4015682B1
Authority
EP
European Patent Office
Prior art keywords
thread
air
spinning device
channel
inlet opening
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
EP20215368.0A
Other languages
German (de)
English (en)
Other versions
EP4015682A1 (fr
Inventor
Turgay Yüksel
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.)
Saurer Intelligent Technology AG
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Saurer Intelligent Technology 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 Saurer Intelligent Technology AG filed Critical Saurer Intelligent Technology AG
Priority to EP20215368.0A priority Critical patent/EP4015682B1/fr
Priority to JP2021205371A priority patent/JP2022097469A/ja
Priority to US17/554,001 priority patent/US20220195636A1/en
Priority to CN202111549994.9A priority patent/CN114645340B/zh
Publication of EP4015682A1 publication Critical patent/EP4015682A1/fr
Application granted granted Critical
Publication of EP4015682B1 publication Critical patent/EP4015682B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
    • D01H13/045—Guide tube
    • 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

Definitions

  • an air spinning machine with an air spinning device which forms a thread from a fiber sliver via an air flow circulating around a hollow spinning cone.
  • the fiber sliver which has previously been drawn by means of a drafting device upstream of the air spinning device, is fed to the air spinning device via a fiber sliver inlet of the air spinning device and enters a vortex chamber surrounding a hollow spinning cone, which can be subjected to a vortex air flow by means of a nozzle device.
  • the nozzle device generates an air flow circulating around the spinning cone, whereby the free fiber ends of the fiber sliver are placed around the spinning cone in a known manner and wound helically around core fibers, whereby a thread with suitable strength properties is produced, which is transported via an outlet opening of the air spinning device to a winding device, by means of which the spun thread is wound onto a take-up package in a defined manner.
  • the thread After leaving the air spinning device, the thread passes through a thread deflection unit that guides the thread and a thread guide channel adjacent to the thread deflection unit.
  • the thread end of the already spun thread which has usually run onto an associated take-up package, must first be retrieved during the subsequent piecing process to remedy the spinning interruption and transported through the air spinning device into the area of the drafting system or the spinning cone within the vortex chamber in the thread take-off direction.
  • An air flow initiated by a blowing impulse is usually used as the transport medium for bringing the thread end close to an outlet opening of the air spinning device. As soon as the thread end is presented to the outlet opening, it is sucked into the air spinning device by a suction air flow directed against the usual thread take-off direction during the spinning process and transported to the vortex chamber.
  • the invention is based on the object of providing a work station of an air spinning machine which enables reliable piecing.
  • the invention solves the problem by a work station of an air spinning machine with the features of claim 1.
  • Advantageous further developments of the thread guide element are specified in the dependent claims 2 to 6.
  • the thread guide element has a channel body with a through-channel for arrangement between the outlet opening of the air spinning device and the inlet opening of the thread guide unit, which has a thread guide channel for guiding a thread running between the air spinning device and the winding device.
  • the channel body in turn has a connection section that can be connected to the air spinning device, by means of which the channel body is positioned with its first open end of the through-channel in the area of the outlet opening of the air spinning device. can be.
  • the channel body has an end section which can be arranged opposite the inlet opening and which is adapted to a contour of the thread guide unit surrounding the inlet opening to ensure reliable entry of the thread from the inlet opening into the through-channel or to receive a thread emerging from the inlet opening.
  • the end section is therefore designed in such a way that a reliable transition of a thread emerging from the inlet opening into the through-channel of the channel body can be ensured.
  • the distance between the end section of the through-channel or a second open end of the through-channel delimited by the end section and the inlet opening is selected in such a way that a thread end emerging from the inlet opening is not deflected in the direction of the gap formed between the end section or the second open end and the inlet opening in such a way that the thread end is guided through the gap.
  • the end section is designed to arrange the open second end opposite the inlet opening without forming a gap between the end section and the contour surrounding the inlet opening that allows the thread end to pass through.
  • the end section can, for example, have a different shape or size than the rest of the channel body.
  • the thread guide element according to the invention ensures a reliable transition of the thread end to be returned to the air spinning device for piecing, whereby the end section, due to its design adapted to the inlet opening of the thread guide unit, ensures reliable reception of the thread end when it exits the inlet opening of the thread guide unit.
  • the thread located in the through channel of the channel body of the thread guide element is reliably guided along the through channel via the first open end of the through channel into the outlet opening of the air spinning device, from where the thread end reaches the position required for piecing with the fiber band.
  • the thread guide element according to the invention thus ensures a reliable return of a thread end, usually taken up from a winding spool, into the spinning device in order to achieve reliable piecing with the supplied fiber band.
  • the thread guide element thus bridges the intermediate section, which is usually free of thread guides, between the thread guide unit and the outlet opening of the spinning device and thus prevents malfunctions due to faulty thread return.
  • the thread guide element according to the invention reliably ensures a cost-effective and simple thread return into the spinning device and thus guarantees piecing reliability.
  • the arrangement of the thread guide element on the spinning device can basically be carried out in any way.
  • suitable fastening screws or clamping means can be provided for this purpose, by means of which the thread guide element can be detachably arranged in the area of the outlet opening of the spinning device.
  • the connection section of the channel body of the thread guide element is designed for a bayonet-type connection to the spinning device.
  • connection section in the region of the first open end or the spinning device in the region of the outlet opening has a longitudinal slot, at the end of which a short transverse slot is connected at an angle, which can be brought into operative connection with a corresponding engagement element on the other of the spinning device or connection section.
  • the channel body can basically be made of any material, for example of suitable metallic materials. According to a particularly advantageous embodiment of the invention, however, it is provided that the channel body is made of a plastic material, in particular PVC.
  • a plastic material enables a particularly simple and cost-effective production of the thread guide element.
  • the use of a plastic material enables a simple shaping of the end section of the channel body which can be arranged in the region of the inlet opening and via which the thread emerging from the inlet opening and to be returned to the spinning device is received in the thread guide element.
  • the thread guide unit has a thread deflection unit for the defined deflection of the thread, whereby the thread deflection unit forms the inlet opening.
  • the thread deflection unit At its end facing away from the inlet opening, has an outlet which is coupled to the inlet opening via an intermediate thread deflection section and via which the thread deflection unit can be connected to the thread guide channel for guiding the thread through the thread guide unit to the inlet opening.
  • Such a thread guide unit equipped with a thread deflection unit enables the deflection of the thread in a thread path arranged between the spinning device and the winding device, whereby a work station of the air spinning machine along the thread path can be made more compact.
  • the thread deflection unit is preferably designed to deflect the thread at an angle of less than 90° between the passage axes of the inlet opening and the outlet.
  • the thread deflection unit preferably has a thread deflection roller with a thread guide notch along which the thread can be guided in a deflecting manner.
  • the thread guide notch can have a cross-sectional shape as required, for example a U-, V-, C-, W- or similar shape.
  • the end section is funnel-shaped. This design of the end section ensures, when arranged opposite the inlet opening, a particularly reliable reception of the thread to be returned in the thread guide element and thus a reliable feeding of the thread end into the spinning device for carrying out the piecing process.
  • the end section is adapted to the contour of the thread deflection unit in the area of the inlet opening, in particular to the contour of the thread deflection roller of the thread deflection unit.
  • the thread guide element extends with its connecting section directly to the thread deflection roller provided for thread deflection.
  • An adaptation of the contour of the The attachment of the end section to the thread deflection roller enables the end section to be arranged particularly close to the inlet opening and thus ensures particularly reliable reception of the thread to be returned and also allows particularly simple and cost-effective production of the thread guide element, wherein the end section is provided, for example, in the shape of a shovel with a cross-section adapted to the radius of the thread deflection roller.
  • the channel body has several air passages along the passage channel to cause a rotational flow within the passage channel when the thread is passed through.
  • the air passages are preferably arranged circumferentially, in particular spirally, around the channel body.
  • the air passage can also preferably have an opening axis that is tangential to the passage channel and more preferably points obliquely to the thread passage axis and the thread running direction running through the passage channel. This allows the generation of a less turbulent rotational flow within the passage channel.
  • Such a rotational flow within the passage channel has an advantageous effect when the thread is passed through, particularly in the air spinning process, in that protruding edge fibers of the thread wrap around the thread and adhere to the thread or are bound accordingly.
  • the application of the rotational flow to the passed thread is beneficial for reducing the hairiness of long-staple fibers.
  • the rotational flow can be generated passively or actively.
  • passive generation is understood to mean a rotational flow that is generated purely by the thread passing through the passage channel at high speed.
  • the high speed causes air to be entrained and thus air to be sucked in from the air passages into the passage channel, which ultimately results in a rotational flow.
  • the thread is passed through in the direction of the thread travel, i.e. either in the direction of the spinning device during a piecing process or in an opposite direction during regular spinning operation, preferably supported by negative pressure or positive pressure.
  • the thread can be guided through the Through-channel.
  • the compressed air or suction air can preferably be generated externally of the thread deflection unit, for example in the air spinning device, or also internally, in particular via a compressed air connection on the thread deflection unit for introducing compressed air into the thread deflection unit in the direction of the inlet opening.
  • the compressed air can also be supplied via a compressed air channel that supplies the air passages with compressed air and is connected to a compressed air source.
  • the compressed air channel can, for example, extend in a ring-like manner around the channel body, coupled to the respective air passages.
  • the workstation of an air spinning machine according to the invention ensures reliable thread guidance of the thread end emerging from the thread guide unit, in particular from the thread deflection unit, into the air spinning device by using the thread guide element according to the invention or further developed as described at the beginning.
  • the thread emerging from the thread guide unit, in particular from the thread deflection unit is reliably received in the through-channel of the thread guide element and fed to the air spinning device via the through-channel. Malfunctions in the workstation of the air spinning machine due to an incorrectly returned thread end can be reliably avoided by using the thread guide element, so that the operational reliability of the workstation of the air spinning machine is increased in a complementary manner.
  • Figure 1 shows in a schematic representation a thread guide unit with a thread deflection unit 2 arranged downstream of an air spinning device 6 along a thread path, which is connected to a thread preparation device 5 via a thread guide channel 4 connected to its output 3.
  • the air spinning device 6, the thread guide unit with the thread deflection unit 2 and the thread guide channel 4 as well as the thread preparation device 5 are components of a work station of an air spinning machine (not shown here), in which a thread 27 emerging from the air spinning device 6 is wound onto a take-up package (not shown here) during the spinning process.
  • a stored fiber sliver on its way to the winding package first passes through a drafting device upstream of the air spinning device 6 in the fiber sliver running direction R, where it is drawn in a defined manner.
  • the drawn fiber sliver is then fed to the air spinning device 6 via an output roller pair of the drafting device (not shown here), within which the fiber sliver is formed into a thread 27 in the region of a spinning cone (not shown here) under the influence of a rotational flow generated by an air stream emerging from a nozzle block, with edge fibers of the fiber sliver being wound helically around its core fibers.
  • the air-spun thread 27 produced in this way is drawn off from the air spinning device 6 and drawn off via the thread guide unit with the thread deflection unit 2 and the thread guide channel 4 and through the thread preparation device 5 and then wound up on a take-up bobbin.
  • the thread end of the already produced thread (27) is usually retrieved from the winding package or a defined thread end position via a thread end guide unit, such as a suction nozzle, and transferred to a thread preparation device 5 equipped with a holding and opening tube 7 and arranged downstream of the air spinning device 6 in the fiber sliver running direction R, as shown in Figure 1 is shown.
  • a thread preparation device 5 equipped with a holding and opening tube 7 and arranged downstream of the air spinning device 6 in the fiber sliver running direction R, as shown in Figure 1 is shown.
  • the thread end is freed as far as possible from twists and loose fibers.
  • the thread preparation device 5 has a holding and opening tube 7 arranged in a receiving housing 8.
  • the receiving housing 8 in turn has an annular space 9 to which a compressed air source 11 is connected via a pneumatic line 10.
  • a valve 12 is connected to the pneumatic line 10 and is connected via a control line 13 to a control device of the spinning station (not shown here).
  • the holding and opening tube 7 is equipped with at least one blow nozzle 14 which is connected to the annular space 9.
  • a thread 27 must first be placed in the holding and opening tube 7 in order to prepare its thread end for a thread connection process in the air spinning device 6.
  • the retrieved thread end is provided on the thread preparation device 5 in such a way that it can be pneumatically threaded into the holding and opening tube 7.
  • the thread preparation device 5 can, as in Figure 1 shown, cooperate with at least one cutting device 15, which cuts the retrieved thread 27 to length as required.
  • the valve 12 is controlled and blown into the holding and opening tube 7 via the blow nozzle 14 in order to thread or suck in the cut thread end into the holding and opening tube 7.
  • the threaded thread end is freed of yarn twists and loose fibers in the holding and opening tube 7.
  • the thread preparation device 5 is coupled to a thread guide channel 4 for guiding the thread 27, wherein the thread guide channel 4 is arranged in the fiber sliver running direction R between the thread deflection unit 2 and the thread preparation device 5.
  • the fiber sliver running direction R is identical to the running direction of the thread 27 in the spinning operation of the air spinning machine, in which the thread 27 is spun by means of the air spinning device 6.
  • the thread guide channel 4 is connected to an outlet 3 of the thread deflection unit 2, which has a thread deflection roller 16 for the controlled deflection of the thread 27, by means of which the thread 27 is deflected when the thread end is returned in the direction of the air spinning device 6.
  • the thread deflection unit 2 further comprises a receptacle for a compressed air connection 17, via which compressed air can be fed via an inlet 18 into the channel section 19 pointing in the direction of the air spinning device 6, whereby a suction effect is simultaneously created in the thread guide channel 4.
  • An end section 21 of a thread guide element 1 adjoins the inlet opening 20 of the thread deflection unit 2, the end section 21 having a shovel-shaped contour adapted to the contour of the thread deflection roller 16.
  • a through channel 22 extends from the end section 21 to a connecting section 23 to an outlet opening 24 of the air spinning device 6.
  • a connecting plate 25 is arranged on the channel body 26, which can be connected to the air spinning device 6 via a bayonet connection (not shown here).
  • the returned thread 27 is reliably guided via the through channel 22 via the funnel-shaped outlet opening 24 into the air spinning device 6 due to the existing air flow.
  • the thread guide element 1 thus bridges the area between the inlet opening 20 of the thread deflection unit 2 and the air spinning device 6 and ensures reliable thread guidance.
  • Thread guide element 1 An alternative embodiment to the one in the Figures 1 and 2 and 2a shown thread guide element 1 is in Figure 3
  • the thread guide element 1a shown there has, in contrast to the one shown in the Figures 1 , 2 and 2a illustrated thread guide element 1 has a funnel-shaped end portion 21a, which ensures reliable reception of the returned thread end.

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

Claims (6)

  1. Poste de travail d'un métier à filer à jet d'air comportant
    - un dispositif de filature à jet d'air (6) permettant de filer un fil (27) à partir d'un ruban de fibres acheminé et
    - une unité de guidage de fil montée en aval du dispositif de filature à jet d'air (6) et comportant une ouverture d'entrée (20) pour la réception du fil (27) sortant de l'ouverture de sortie (24) du dispositif de filature à jet d'air (6) et un canal de conduite de fil (4) permettant de conduire au moins le fil (27) filé par jet d'air provenant du dispositif de filature à jet d'air (6), dans lequel l'unité de guidage de fil présente une unité de déviation de fil (2) permettant de dévier le fil de manière définie, dans lequel l'unité de déviation de fil (2) forme l'ouverture d'entrée (20) et comprend, à son extrémité opposée à l'ouverture d'entrée (20), une sortie (3) qui est accouplée à l'ouverture d'entrée (20) par l'intermédiaire d'une section de déviation de fil interposée et par l'intermédiaire de laquelle sortie l'unité de déviation de fil (2) peut être reliée au canal de conduite de fil (4) pour la conduite du fil (27) à travers l'unité de guidage de fil jusqu'à l'ouverture d'entrée (20)
    caractérisé en ce que
    un élément de guidage de fil (1, 1a) est disposé dans la zone entre l'ouverture de sortie (24) du dispositif de filature à jet d'air (6) et l'ouverture d'entrée (20) de l'unité de guidage de fil, dans lequel l'élément de guidage de fil (1, 1a) présente un corps de canal (26) présentant un canal de passage (22), lequel corps de canal présente
    - une section de raccordement (23) conçue pour être reliée au dispositif de filature à jet d'air (6) et destinée à disposer une première extrémité ouverte du canal de passage (22) dans la zone de l'ouverture de sortie (24) du dispositif de filature à jet d'air (6) et
    - une section d'extrémité (21, 21a) pouvant être disposée en face de l'ouverture d'entrée (20) et adaptée à un contour de l'unité de guidage de fil, lequel contour entoure l'ouverture d'entrée (20), pour la réception d'un fil (27) sortant de l'ouverture d'entrée (20).
  2. Poste de travail selon la revendication 1, caractérisé en ce que la section d'extrémité (21) est adaptée au contour de l'unité de déviation de fil (2) dans la zone de l'ouverture d'entrée (20), en particulier au contour d'un rouleau de déviation (16) de l'unité de déviation de fil (2).
  3. Poste de travail selon la revendication 1 ou 2, caractérisé en ce que la section de raccordement (23) est conçue pour une liaison de type fermeture à baïonnette avec le dispositif de filature (6).
  4. Poste de travail selon une ou plusieurs des revendications précédentes, caractérisé en ce que le corps de canal (26) est formé à partir d'un matériau synthétique, en particulier à partir de PVC.
  5. Poste de travail selon une ou plusieurs des revendications précédentes, caractérisé en ce que la section d'extrémité (21, 21a) est conçue en forme d'entonnoir.
  6. Poste de travail selon une ou plusieurs des revendications précédentes, caractérisé en ce que le corps de canal (26) présente, le long du canal de passage (22), plusieurs accès d'air permettant de provoquer un écoulement en rotation à l'intérieur du canal de passage (22).
EP20215368.0A 2020-12-18 2020-12-18 Poste de travail d'un métier à filer à jet d'air Active EP4015682B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20215368.0A EP4015682B1 (fr) 2020-12-18 2020-12-18 Poste de travail d'un métier à filer à jet d'air
JP2021205371A JP2022097469A (ja) 2020-12-18 2021-12-17 空気精紡機の作業ユニットならびに糸ガイド部材
US17/554,001 US20220195636A1 (en) 2020-12-18 2021-12-17 Workstation of an air-spinning machine, and thread-guiding element
CN202111549994.9A CN114645340B (zh) 2020-12-18 2021-12-17 气流纺纱机的工位以及导纱件

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20215368.0A EP4015682B1 (fr) 2020-12-18 2020-12-18 Poste de travail d'un métier à filer à jet d'air

Publications (2)

Publication Number Publication Date
EP4015682A1 EP4015682A1 (fr) 2022-06-22
EP4015682B1 true EP4015682B1 (fr) 2025-01-29

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EP20215368.0A Active EP4015682B1 (fr) 2020-12-18 2020-12-18 Poste de travail d'un métier à filer à jet d'air

Country Status (4)

Country Link
US (1) US20220195636A1 (fr)
EP (1) EP4015682B1 (fr)
JP (1) JP2022097469A (fr)
CN (1) CN114645340B (fr)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN161964B (fr) * 1982-10-29 1988-03-05 Rieter Ag Maschf
DE3604819A1 (de) * 1986-02-15 1987-08-20 Bayer Ag Foerderung von filamentverbaenden ueber weite foerderstrecken
IT1222871B (it) * 1987-10-12 1990-09-12 Enzo Scaglia Procedimento e dispositivo per l'afferamento del capo di uno stoppino filato o simile da una bobina e per il suo invio ad una posizione prefissata
DE4242722A1 (de) * 1992-12-17 1994-06-23 Rieter Ingolstadt Spinnerei Druckstab
DE4443982A1 (de) * 1993-12-16 1995-06-22 Barmag Spinnzwirn Gmbh Fadenführer für Spinntöpfe
JP3132343B2 (ja) * 1995-07-11 2001-02-05 株式会社豊田自動織機製作所 ロータ式オープンエンド精紡機の糸継ぎ方法及び装置
DE19718768A1 (de) * 1997-05-05 1998-11-12 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum pneumatischen Reinigen eines Fadenabzugsrohres
DE19915924B4 (de) * 1999-04-09 2009-12-10 Rieter Ingolstadt Gmbh Fadenführungsrohr
JP2009541172A (ja) * 2006-06-21 2009-11-26 イーストマン ケミカル カンパニー 繊維の搬送装置及び方法
JP2016017254A (ja) * 2014-07-10 2016-02-01 村田機械株式会社 紡績機及び紡績方法
DE102014112360A1 (de) * 2014-08-28 2016-03-03 Maschinenfabrik Rieter Ag Garnbildungselement für eine Spinndüse einer Luftspinnmaschine, Luftspinnmaschine sowie Verfahren zum Betrieb einer solchen
EP3276057B1 (fr) * 2016-07-28 2020-01-01 Rieter Ingolstadt GmbH Unité guide-fil, métier à filer à bout ouvert et procédé de fonctionnement d'un poste de filage
CH713503A2 (de) * 2017-02-28 2018-08-31 Rieter Ag Maschf Luftspinnmaschine zur Herstellung eines Garns aus einem strangförmigen Faserverband.
DE102017115939A1 (de) * 2017-07-14 2019-01-17 Saurer Spinning Solutions Gmbh & Co. Kg Verfahren zum Betreiben einer Luftspinnvorrichtung, Fadenleitkanal und Luftspinnmaschine umfassend einen solchen Fadenleitkanal

Also Published As

Publication number Publication date
EP4015682A1 (fr) 2022-06-22
CN114645340B (zh) 2023-12-22
JP2022097469A (ja) 2022-06-30
US20220195636A1 (en) 2022-06-23
CN114645340A (zh) 2022-06-21

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