EP4015682A1 - Poste de travail d'un métier à filer à jet d'air ainsi que élément de guidage de filetage - Google Patents

Poste de travail d'un métier à filer à jet d'air ainsi que élément de guidage de filetage Download PDF

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Publication number
EP4015682A1
EP4015682A1 EP20215368.0A EP20215368A EP4015682A1 EP 4015682 A1 EP4015682 A1 EP 4015682A1 EP 20215368 A EP20215368 A EP 20215368A EP 4015682 A1 EP4015682 A1 EP 4015682A1
Authority
EP
European Patent Office
Prior art keywords
thread
air
spinning device
thread guide
channel
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.)
Pending
Application number
EP20215368.0A
Other languages
German (de)
English (en)
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
Original Assignee
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/EP4015682A1/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
Pending 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
    • 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

  • Ring spinning machines and/or open-end rotor spinning machines have been in widespread use for a long time and have proven extremely successful.
  • so-called air-jet spinning machines are also known, in particular in connection with the processing of synthetic yarn material.
  • an air spinning machine with an air spinning device which forms a thread from a sliver via an air flow circulating around a hollow spinning cone.
  • the sliver previously drafted by means of a drafting system upstream of the air spinning device is fed to the air spinning device via a sliver inlet of the air spinning device and enters a turbulence chamber surrounding a hollow spinning cone, which can be subjected to a turbulent air flow by means of a nozzle device.
  • the nozzle device generates an air flow encircling the spinning cone, as a result of which the free fiber ends of the sliver are placed around the spinning cone in a known manner and wound helically around core fibers, producing a thread with suitable strength properties, 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 winding package in a defined manner.
  • the thread runs through a thread deflection unit guiding the thread and a thread guide channel adjacent to the thread deflection unit.
  • the spinning process of an air spinning device is interrupted, e.g. due to a break in the supplied sliver or because the spun thread was otherwise separated by a controlled cut of a thread clearer, in the course of the subsequent piecing process serving to eliminate the spinning interruption, the thread end of the already spun thread, which usually has accumulated on an associated take-up spool, is retrieved and transported through the air-jet spinning device to the region of the drafting system or the spinning cone within the vortex chamber in the thread withdrawal 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 yarn end is presented to the outlet opening, it is sucked into the air spinning device by a suction air flow directed counter to the usual yarn withdrawal 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-jet spinning machine and a thread-guiding element for use on a spinning machine, such as in particular an air-jet spinning machine, which enables reliable piecing.
  • the invention solves the problem by a thread guide element with the features of claim 1 and a work station of an air-jet spinning machine with the features of claim 8.
  • Advantageous developments of the thread guide element are specified in the dependent claims 2 to 6.
  • the thread guide element according to the invention has to be arranged between the Outlet opening of the spinning device, such as.
  • the channel body in turn has a connecting section that can be connected to the spinning device, by means of which the channel body can be positioned with its first open end of the through-channel in the area of the outlet opening of the spinning device.
  • the channel body has an end section that can be arranged opposite the entry opening and that is adapted to a contour of the thread guide unit surrounding the entry opening to ensure reliable entry of the thread from the entry opening into the through-channel or to accommodate a thread exiting the entry opening.
  • the configuration of the end section is accordingly such that a reliable transition of a thread emerging from the entry opening into the through-channel of the channel body can be guaranteed.
  • 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 entry opening is selected in such a way that a thread end emerging from the entry opening is not deflected in the direction between the end section or the second open end and the entry opening trained gap experiences such that the thread end is directed through the gap.
  • the end section is designed for arranging the open second end opposite the entry opening without forming a gap between the end section and the contour surrounding the entry opening that is permeable to the thread end.
  • 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 spinning device for piecing, the end section ensuring reliable reception of the thread end when it exits the entry opening of the thread guide unit due to its configuration adapted to the entry 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 exit opening of the spinning device, from where the thread end reaches the position required for piecing with the sliver.
  • the thread-guiding element according to the invention thus ensures reliable return of a thread end, which is generally taken up by a take-up spool, into the spinning device in order to achieve reliable piecing with the supplied fiber sliver.
  • the thread guide element thus bridges the intermediate section between the thread guide unit and the outlet opening of the spinning device, which is usually free of thread guides, and thus prevents malfunctions due to faulty thread return.
  • the thread guiding element according to the invention ensures in a reliable manner an inexpensive and simple thread return into the spinning device and thus ensures piecing safety.
  • 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 area of the first open end or the spinning device in the area of the outlet opening has a longitudinal slit, the end of which is adjoined at an angle by a short transverse slit, which is connected to a corresponding engagement element on the other of the spinning device or connection section can be brought into effective connection.
  • the configuration of the connection between the connecting section and the spinning device via a bayonet-type connection enables a particularly simple and reliable arrangement of the thread guide element on the spinning device and, if necessary, the dismantling of the thread guide element from the spinning device in the event of maintenance work to be carried out.
  • the channel body can be made of any desired material, for example made 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 the thread guide element to be produced in a particularly simple and cost-effective manner. Also allowed the use of a plastic material enables a simple shaping of the end section of the channel body which can be arranged in the area of the entry opening and via which the thread exiting the entry opening and to be returned to the spinning device is received in the thread guiding element.
  • the thread guide unit has a thread deflection unit for defined deflection of the thread, with the thread deflection unit forming the entry opening.
  • the thread deflection unit At its end facing away from the inlet opening, the thread deflection unit 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 entry opening.
  • Such a thread guide unit equipped with a thread deflection unit enables the thread to be deflected in a thread path arranged between the spinning device and winding device, as a result of which a work station of the air-jet 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 particularly preferably has a thread deflection roller with a thread guide notch along which the thread can be guided in a deflecting manner.
  • the cross-section of the thread guide notch can have a shape as required, for example a U, V, C, W or similar shape.
  • the end section is funnel-shaped.
  • this design ensures that the thread to be returned is received particularly reliably in the thread guide element and thus that the thread end is reliably fed 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 entry opening, in particular to the contour of the thread deflection roller of the thread deflection unit.
  • the thread guide element extends with its connection section directly up to the thread deflection roller provided for thread deflection.
  • the channel body has a plurality of air passages along the through-channel for effecting a rotational flow within the through-channel when the thread is guided through.
  • the air passages are preferably arranged circumferentially, in particular spirally, around the duct body.
  • the air passage can furthermore preferably have an opening axis which is tangential to the through-channel, which more preferably points obliquely to the thread passage axis and thread running direction running through the through-channel. This allows a low-turbulence rotational flow to be generated within the through-channel.
  • Such a rotational flow within the through-channel has an advantageous effect when the thread is passed through, in particular in the air spinning process, in that protruding edge fibers of the thread wrap themselves around the thread and adhere to the thread or are tied in accordingly.
  • This allows the hairiness of the thread passed through to be influenced in such a way that the absolute value of this yarn parameter can be reduced, as a result of which the strength of the thread is increased.
  • the application of the rotational flow to the thread passed through is beneficial in order to reduce the hairiness of long-staple fibers.
  • the rotating flow can be generated passively or actively.
  • passive generation is to be understood as meaning a rotational flow which is generated purely by the thread being passed through the through-channel at high speed.
  • the high speed causes the air to be entrained and thus air to be sucked in from the air passages into the through-channel, which ultimately ends in a rotational flow.
  • the yarn is passed through in the yarn running direction, ie either in the direction of the spinning device in the course of a piecing process or in a direction opposite thereto during regular spinning operation, preferably with the aid of negative pressure or positive pressure.
  • the thread can be compressed air or suction air accompanied by the Through channel are passed.
  • the compressed air or suction air can preferably be generated externally to the thread deflection unit, for example in the 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 take place via a compressed air channel that supplies the air passages with compressed air and is connected to a compressed air source.
  • the compressed air duct can, for example, extend in a ring-like manner around the duct body, coupled to the respective air passages.
  • the workplace of an air-jet spinning machine ensures reliable thread guidance of the thread end emerging from the thread-guiding unit, in particular from the thread deflection unit, to be returned to the air-jet spinning device through the use of a thread guiding element according to the invention or a further development described at the outset.
  • the thread emerging from the thread guide unit, in particular from the thread deflection unit is reliably received in the passage channel of the thread guide element and fed to the air spinning device via the passage channel. Disturbances of the workplace of the air-jet spinning machine due to a thread end that is returned incorrectly can be reliably avoided by using the yarn guide element, so that the operational safety of the workplace of the air-jet spinning machine is additionally increased.
  • figure 1 shows a schematic representation of a thread guide unit downstream of an air spinning device 6 along a thread travel path, with a thread deflection unit 2 which is connected to a thread preparation device 5 via a thread guide channel 4 connected to its outlet 3 .
  • the air spinning device 6, the thread guiding 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 during the spinning process a thread 27 emerging from the air spinning device 6 is wound onto a take-up bobbin, not shown here.
  • a stored sliver first runs through a drafting system upstream of the air-spinning device 6 in the sliver travel direction R on its way to the package bobbin, where it is drawn in a defined manner.
  • the drafted sliver is then fed to the air spinning device 6 via a pair of exit rollers of the drafting system, not shown here, within which the sliver is formed into a thread 27 in the area of a spinning cone, not shown here, under the influence of a rotating flow, which is generated by an air stream emerging from a nozzle block reshaped, with edge fibers of the sliver being wrapped 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 take-up bobbin or a defined thread end position via a thread end entrainment unit, such as a suction nozzle, and placed in a thread end equipped with a holding and opening tube 7 and arranged downstream of the air spinning device 6 in the fiber sliver travel direction R Yarn preparation device 5 transferred, as in figure 1 is shown.
  • a thread end entrainment unit such as a suction nozzle
  • 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 switched on, which is connected via a control line 13 to a control device of the spinning station, not shown here.
  • the holding and dissolving tube 7 is equipped with at least one blowing nozzle 14 which is in communication with 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 joining process in the air spinning device 6 .
  • the retrieved thread end is made available at the thread preparation device 5 in such a way that it can be threaded pneumatically into the holding and opening tube 7 .
  • the thread preparation device 5 can, as in figure 1 shown, interact with at least one cutting device 15, which cuts the retrieved thread 27 as required.
  • the valve 12 is actuated and blown into the holding and opening tube 7 via the blowing 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 from yarn twists and loose fibers in the holding and unraveling tube 7 .
  • the thread preparation device 5 is coupled to a thread guide channel 4 for guiding the thread 27 through, the thread guide channel 4 being arranged in the fiber sliver running direction R between the thread deflection unit 2 and the thread preparation device 5 .
  • the sliver running direction R is identical to the running direction of the thread 27 in the spinning operation of the air-jet spinning machine, in which the thread 27 is spun by means of the air-jet spinning device 6 .
  • the thread guide channel 4 is connected to an output 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 in the direction of the air spinning device 6 when the thread end is returned.
  • the thread deflection unit 2 also includes a receptacle for a compressed air connection 17, via which compressed air can be fed via a junction 18 into the channel section 19 pointing in the direction of the air spinning device 6, with a suction effect occurring in the thread guide channel 4 at the same time.
  • 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 which is adapted to the contour of the thread deflection roller 16 .
  • a through-channel 22 extends from the end section 21 to a connection section 23 to an outlet opening 24 of the air spinning device 6.
  • a connection plate 25 is arranged on the channel body 26, which has a bayonet connection, not shown here can be connected to the air spinning device 6.
  • the returned thread 27 is reliably guided via the through-channel 22 into the air-spinning device 6 via the funnel-shaped outlet opening 24 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 here.
  • thread guide element 1 An alternative embodiment to that in the figures 1 and 2 and 2a shown thread guide element 1 is in figure 3 shown.
  • the thread guide element 1a shown there has, in contrast to that in the figures 1 , 2 and 2a
  • Thread guide element 1 shown has a funnel-shaped end section 21a, which ensures that the returned thread end is reliably received.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP20215368.0A 2020-12-18 2020-12-18 Poste de travail d'un métier à filer à jet d'air ainsi que élément de guidage de filetage Pending EP4015682A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20215368.0A EP4015682A1 (fr) 2020-12-18 2020-12-18 Poste de travail d'un métier à filer à jet d'air ainsi que élément de guidage de filetage
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 EP4015682A1 (fr) 2020-12-18 2020-12-18 Poste de travail d'un métier à filer à jet d'air ainsi que élément de guidage de filetage

Publications (1)

Publication Number Publication Date
EP4015682A1 true EP4015682A1 (fr) 2022-06-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20215368.0A Pending EP4015682A1 (fr) 2020-12-18 2020-12-18 Poste de travail d'un métier à filer à jet d'air ainsi que élément de guidage de filetage

Country Status (4)

Country Link
US (1) US20220195636A1 (fr)
EP (1) EP4015682A1 (fr)
JP (1) JP2022097469A (fr)
CN (1) CN114645340B (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110150A1 (fr) * 1982-10-29 1984-06-13 Maschinenfabrik Rieter Ag Dispositif de filature à tuyère
DE4443982A1 (de) * 1993-12-16 1995-06-22 Barmag Spinnzwirn Gmbh Fadenführer für Spinntöpfe
EP3276057A1 (fr) * 2016-07-28 2018-01-31 Rieter Ingolstadt GmbH Unité guide-fil, métier à tisser à extrémité ouverte et procédé de fonctionnement d'un poste de filage
WO2019012143A2 (fr) 2017-07-14 2019-01-17 Saurer Germany Gmbh & Co. Kg Procédé pour faire fonctionner un arrangement de filage à jet d'air, canal de guidage de fil et métier à filer à jet d'air comprenant un tel canal de guidage de fil

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
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
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
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
CH713503A2 (de) * 2017-02-28 2018-08-31 Rieter Ag Maschf Luftspinnmaschine zur Herstellung eines Garns aus einem strangförmigen Faserverband.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110150A1 (fr) * 1982-10-29 1984-06-13 Maschinenfabrik Rieter Ag Dispositif de filature à tuyère
DE4443982A1 (de) * 1993-12-16 1995-06-22 Barmag Spinnzwirn Gmbh Fadenführer für Spinntöpfe
EP3276057A1 (fr) * 2016-07-28 2018-01-31 Rieter Ingolstadt GmbH Unité guide-fil, métier à tisser à extrémité ouverte et procédé de fonctionnement d'un poste de filage
WO2019012143A2 (fr) 2017-07-14 2019-01-17 Saurer Germany Gmbh & Co. Kg Procédé pour faire fonctionner un arrangement de filage à jet d'air, canal de guidage de fil et métier à filer à jet d'air comprenant un tel canal de guidage de fil

Also Published As

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

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