WO2008101580A1 - Groupe de buses à air avec dispositif pour amorcer le filage - Google Patents

Groupe de buses à air avec dispositif pour amorcer le filage Download PDF

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Publication number
WO2008101580A1
WO2008101580A1 PCT/EP2008/000489 EP2008000489W WO2008101580A1 WO 2008101580 A1 WO2008101580 A1 WO 2008101580A1 EP 2008000489 W EP2008000489 W EP 2008000489W WO 2008101580 A1 WO2008101580 A1 WO 2008101580A1
Authority
WO
WIPO (PCT)
Prior art keywords
spinning
compressed air
thread
cone
nozzle block
Prior art date
Application number
PCT/EP2008/000489
Other languages
German (de)
English (en)
Inventor
Helmut Feuerlohn
Chandru Seshayer
Thomas Weide
Lothar Winzen
Original Assignee
Oerlikon Textile Gmbh & Co. Kg
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 Oerlikon Textile Gmbh & Co. Kg filed Critical Oerlikon Textile Gmbh & Co. Kg
Priority to CN2008800039339A priority Critical patent/CN101600825B/zh
Priority to BRPI0807711-8A priority patent/BRPI0807711A2/pt
Publication of WO2008101580A1 publication Critical patent/WO2008101580A1/fr

Links

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
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • 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
    • D01H4/48—Piecing arrangements; Control therefor

Definitions

  • the present invention relates to a spinning device according to the preamble of claim 1.
  • a spinning device of the type mentioned is known from WO 2005/007948 Al.
  • a fiber sliver warped in an upstream drafting system which is presented via a sliver guide, which also acts as a twist stop, to the inlet opening of a spindle-like thread take-off channel.
  • a thread end is provided at the inlet opening so that upon entry of the sliver into the thread withdrawal channel, the free fiber ends are looped around the conical head of the thread withdrawal channel by means of a circulating air flow.
  • the fibers wrapping around the thread withdrawal channel spirally wrap around the so-called core fibers.
  • the core fibers together with the binder fibers form a new thread.
  • the spinning process is interrupted due to breakage of the fiber ribbon or the spun yarn
  • the end of an already spun yarn is guided back through the spinning device against the operational transport direction into the spinning device during the course of the piecing process and submitted to the sliver.
  • a transport medium for the presentation of the thread end a directed against the transport direction of air flow is used.
  • the supply of air takes place via an integrated into the yarn withdrawal channel injection channel in the thread withdrawal channel empties.
  • the air is generated by a compressed air source connected to the injection channel.
  • During the process of presenting the thread end of the injection channel is pressurized with compressed air, which causes in the yarn withdrawal channel directed towards the drafting suction air flow, which returns the end of the spun yarn to the delivery roller pair of the drafting system.
  • a disadvantage proves that the production of such a thread withdrawal channel with an integrated injection channel manufacturing technology is very demanding.
  • Object of the present invention is to provide a spinning device of the type mentioned above, which allows easy feeding of the thread end to continue the spinning process and is inexpensive to produce.
  • a compressed air source can be connected, while the nozzle block is separable from the compressed air supply, whereby in the spinning housing an air flow is generated, which runs along the spinning cone 1 in the direction of the sliver guide, so that at the inlet opening of the Spinkonus' creates a suction with which a thread through the spinning cone against the spinning direction is transportable.
  • this spinning device has the advantage that an injector, which incorporated elaborately into the spinning cone must be, is not required. Rather, it is sufficient to connect a compressed air source to the expansion space to generate an air flow in the direction of the nozzle block, which generates a suction at the inlet opening of the spinning cone. This suction causes the yarn end located in the spinning cone to be sucked in the direction of this inlet opening, so that the thread end is ready at the beginning of the piecing process.
  • the invention makes use of the fact that at least one exhaust air duct must be provided to carry out the spinning process in order to be able to discharge the compressed air introduced via the nozzle block to the outside.
  • the exhaust duct can be inclined in the direction of the nozzle block.
  • the incoming compressed air is already aligned in the direction of the spinning cone 1 .
  • the emergence of the suction effect at the inlet opening can be promoted and at the same time the occurrence of flow losses can be reduced.
  • the compressed-air source can be switched over in such a way that it pressurizes the exhaust-air duct with compressed air, either to generate the circulating airflow when spinning the nozzle block or else to generate the intake flow for presenting the yarn end.
  • Compressed air source can be connected via suitable pneumatic lines and valves to the exhaust air duct.
  • a control device for controlling the compressed air source can be provided.
  • the control device switches, for example, to interrupt the compressed air supply via pneumatic lines intermediate valves to pressurize the nozzle block with compressed air depending on the operating state during the spinning process and to suppress the compressed air supply to the exhaust duct or in the case of yarn break for the period of presenting a yarn end the exhaust duct with compressed air to apply and to interrupt the compressed air supply to the nozzle block.
  • a sensor for detecting a thread may be provided in the region of the inlet opening.
  • the beginning and the duration of the compressed air supply for presenting the thread end can be controlled in a simple manner. In this way, after a thread break, the switching of a shared compressed air source is maintained only for the actual period of presentation of the thread end. If the thread end is detected, it is switched to the admission of the nozzle block whose compressed air supply has been previously interrupted in the detection of a yarn breakage. This saves time when troubleshooting a thread break, which can increase productivity. In addition, in the case of unsuccessful detection of the thread end via the control device, this situation can be signaled outwards if an intervention by the operating personnel is required.
  • -A- can be arranged acted upon suction tube with a sensor which serves to detect the yarn end.
  • a sensor which serves to detect the yarn end.
  • the need for installation space for the sensor plays a subordinate role in this embodiment.
  • FIG. 1 schematically, in longitudinal section, an air spinning device according to the invention.
  • FIG. 3 schematically, in longitudinal section, an alternative
  • the air-spinning machine 1 shown in front view in FIG. 1 has a multiplicity of workstations 2 arranged in a row next to one another and a drive unit 13 on at least one end of the air-jet spinning machine.
  • Each of the spinning stations 2 of the air-spinning machine 1 has a sliver source, for example a sliver can 3, a drafting device 4, an air-spinning device 5, a yarn withdrawal device 6, a yarn cleaner 7 and a thread-changing device 8.
  • the Fadenchangier listening 8 ensures that the thread produced in the air spinning device 5 wound in intersecting layers on a package 9 becomes.
  • the cross-wound bobbin 9 is held in a creel and is rotated by a reel drive.
  • the spinning stations 2 of the air-spinning machine 1 are supplied by an automatically operating operating rotor 10, which, guided on rail 11, 12, can be moved along the spinning stations 2.
  • the air-spinning device 5 according to the invention, the drafting 4 upstream in sliver running direction R and the downstream yarn withdrawal device 6 are shown schematically.
  • the air spinning device 5 is shown in section.
  • the air-spinning device 5 consists essentially of a two-part outer housing 14, 15, an expansion housing 16, a nozzle block 17, a sliver guide and swirl stop device 18, and a hollow spinning cone 19.
  • the expansion housing 16 forms in conjunction with the front housing part 14 of the outer housing a front annular space 20 which is connected via a pneumatic line 21 to a pressure source 22 and in conjunction with the rear housing part 15 of the outer housing an expansion space 28.
  • a front annular space 20 which is connected via a pneumatic line 21 to a pressure source 22 and in conjunction with the rear housing part 15 of the outer housing an expansion space 28.
  • the expansion space 28 via a Exhaust duct 29 is connected to a machine-wide suction, which is connected to the environment, the annular space 20 is pneumatically connected continuously with Blas Kunststoffdüsen 23, which are arranged in the nozzle block 17.
  • the blowing air nozzles 23 are directed tangentially in the region of the inlet opening 35 of the spinning cone 19 on the head 24 of the spinning cone 19 in such a way that a rotating air flow adjusts to it.
  • the spinning cone 19 is preferably made made of a highly wear-resistant material, such as a technical ceramic material.
  • the compressed air source 22 is connected via a pneumatic line 30 with the exhaust duct 29 in connection.
  • the pneumatic lines 21 and 30 via valves 32, 33, 34 controllable.
  • the actuation of the valves 32, 33, 34 takes place by a spinning station own control device 38 which is connected via control lines to the valves.
  • the stockpiled in a spinning can 3 sliver 25 passes through on its way to the cheese 9, first the drafting system 4, where it is warped.
  • the drawn sliver 25 is transferred into the area of the inlet opening 27 of the air spinning device 5 via the pair of delivery rollers 26 of the drafting system 4 and is sucked into the air spinning device 5 under the influence of a vacuum flow prevailing there.
  • the fiber sliver 25 passes through the sliver guide and swirl stop device 18 and the nozzle block 17 to the inlet opening 35 of the hollow spinning cone 19 and is drawn into the spinning cone 19 by the thread 36 forming within the spinning cone 19.
  • the illustration in FIG. 2 shows the opening of the sliver guide and twist stop device 18 at its narrowest point.
  • the opening of the sliver guide and swirl stop means 18 has a cross section substantially corresponding to a lying eight, through which the fiber material is supplied.
  • the sliver 25 is in the region of the head of the spinning cone 1 19 exposed to the influence of a rotational flow, which is generated by the exiting the nozzle block 17 air flow.
  • the valve 32 is open and the valve 34 to allow during the spinning process, the outflow of air flowing through the nozzle block 17 air flow through the exhaust duct 29 to the outside to the machine-wide suction, while the valve 33, which connects the compressed air source 22 to the exhaust duct 29, is locked.
  • the rear, free ends of the edge fibers of the sliver 25 are exposed to the action of an emerging from the blowing nozzles 23 of the nozzle block 17 air flow that they are lifted or released from the sliver 25.
  • the front ends of the fibers are not detached, since they have already been captured by binding fibers and introduced into the hollow spinning cone 19.
  • the detached from the sliver 25 free fiber ends are wound by the rotating air flow to the conical head 24 of the spinning cone 19.
  • the valve 33 is opened in order to pressurize the expansion space 28 with compressed air via the pneumatic line 30 connected to the exhaust air duct 29.
  • the compressed air supplied through the exhaust air duct 29 escapes through the sliver guide and swirl stop device 18.
  • the inclination of the exhaust air duct 29 generates an air flow directed onto the inlet opening 35 of the spinning cone 19. Due to the Bernoulli principle, a negative pressure occurs at the inlet opening 35, which develops a suction effect in the interior of the spinning cone 19.
  • the suction effect causes the thread 36 to be transported in the direction of the inlet opening 35 of the spinning cone 19.
  • the introduced into the expansion space 28 compressed air escapes through the Fadenments- and twist stop means 18th
  • the expansion space 28 is pressurized with compressed air for a predeterminable period of time before the valve 33 is closed and the valves 32, 34 are opened again.
  • a sensor 39 may be provided in the annular space 20, which detects the presence of the thread end.
  • the sensor 39 is connected to the control device 38. Becomes detects the presence of the thread end, this information is forwarded to the control device 38. This controls the valves 32, 33, 34 accordingly, in order to switch the compressed air source 22 to the admission of the nozzle block 17 for performing the piecing process and the continuation of the spinning process.
  • a further embodiment shown in Fig. 3 provides that between the pair of output rollers 26 of the drafting system 4 and the Faden operations- and twist stop 18 is acted upon by a vacuum suction pipe 40 is disposed on which a sensor 41 is arranged, by means of which a befindliches in the suction pipe 40 Yarn end is detectable.
  • the suction pipe 40 is subjected to negative pressure, so that the thread emerging from the yarn guide and twist stop device 18 is sucked in. If the thread end passes the sensor 41, the process of presenting is terminated.
  • the sensor 41 is also connected to the control device 38 in order to be able to forward the information about the presence of the thread end to the control device 38.
  • the thread end of the thread withdrawal device 6 is withdrawn in the transport direction of the thread and at the same time the valves 32, 33, 34 driven accordingly to the compressed air source 22 to the application of the nozzle block 17 to perform the piecing process and the continuation of the spinning process.

Landscapes

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

Abstract

L'invention concerne un dispositif de filage (5) pour produire un fil (36) au moyen d'un flux d'air circulant. Le dispositif de filage (5) présente un cône de filage creux (19) disposé dans un boîtier de filage (14, 15), ainsi qu'un bloc de buses (17) pouvant être alimenté en air comprimé et destiné à produire le flux d'air circulant. Le boîtier de filage (14, 15) présente une chambre d'expansion (28) qui est pourvue d'au moins un conduit (29) d'air sortant. Pour amorcer le filage, une source d'air comprimé (22) peut être raccordée au conduit (29) d'air sortant, tandis que le bloc de buses peut être séparé de l'alimentation en air comprimé, de sorte qu'est produit dans le boîtier de filage (14, 15) un flux d'air qui s'étend le long du cône de filage (19) en direction du guide (18) de ruban de fibres, de sorte qu'est produit, à l'orifice d'entrée (35) du cône de filage (19), un appel d'air par lequel un fil (36) peut être transporté à travers le cône de filage (19) à l'encontre de la direction de filage.
PCT/EP2008/000489 2007-02-24 2008-01-23 Groupe de buses à air avec dispositif pour amorcer le filage WO2008101580A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2008800039339A CN101600825B (zh) 2007-02-24 2008-01-23 具有拼接装置的气体喷嘴机组
BRPI0807711-8A BRPI0807711A2 (pt) 2007-02-24 2008-01-23 Agregado de bocais de ar com dispositivo de ajuntar fio

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710009074 DE102007009074A1 (de) 2007-02-24 2007-02-24 Spinnvorrichtung
DE102007009074.0 2007-02-24

Publications (1)

Publication Number Publication Date
WO2008101580A1 true WO2008101580A1 (fr) 2008-08-28

Family

ID=39272416

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/000489 WO2008101580A1 (fr) 2007-02-24 2008-01-23 Groupe de buses à air avec dispositif pour amorcer le filage

Country Status (4)

Country Link
CN (1) CN101600825B (fr)
BR (1) BRPI0807711A2 (fr)
DE (1) DE102007009074A1 (fr)
WO (1) WO2008101580A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105239223A (zh) * 2015-10-22 2016-01-13 陕西华燕航空仪表有限公司 一种喷气涡流纺纱器

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ2007178A3 (cs) * 2007-03-08 2008-09-17 Rieter Cz A. S. Zpusob a zarízení k zavádení konce príze do sprádací trysky tryskového doprádacího stroje
CH705221A1 (de) * 2011-07-01 2013-01-15 Rieter Ag Maschf Vorspinnmaschine zur Herstellung eines Vorgarns sowie Verfahren zum Anspinnen eines Faserverbands.
DE102011053812A1 (de) * 2011-09-21 2013-03-21 Rieter Ingolstadt Gmbh Spinnmaschine und Verfahren zur Unterbrechung der Garnherstellung an einer Spinnmaschine
CH706923A1 (de) * 2012-09-07 2014-03-14 Rieter Ag Maschf Spinnstelle einer Luftspinnmaschine.
CN105568455B (zh) * 2016-03-09 2018-03-27 苏州华策纺织科技有限公司 一种断线自动接线器
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
DE102019120592A1 (de) * 2019-07-30 2021-02-04 Maschinenfabrik Rieter Ag Verfahren zum Anspinnen einer Spinndüse einer Luftspinnmaschine sowie Luftspinnmaschine
EP4015683B1 (fr) * 2020-12-18 2023-09-13 Saurer Intelligent Technology AG Procédé de surveillance du processus de filage sur un dispositif de filage, poste de filage d'un métier à filer à air ainsi que dispositif de filage

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE19501545A1 (de) * 1994-01-25 1995-07-27 Murata Machinery Ltd Verfahren zum Andrehen von Garn in einer Spinnmaschine
EP0787843A1 (fr) * 1996-01-30 1997-08-06 Murata Kikai Kabushiki Kaisha Procédé de rattache pour un métier à filer
EP0807699A2 (fr) * 1996-05-16 1997-11-19 Murata Kikai Kabushiki Kaisha Procédé et dispositif de rattache pour un métier à filer
DE102005022187A1 (de) * 2005-05-13 2006-11-16 Saurer Gmbh & Co. Kg Anspinnverfahren an einer Luftspinnmaschine sowie Spinnvorrichtung und Luftspinnmaschine
EP1790760A2 (fr) * 2005-11-28 2007-05-30 Maschinenfabrik Rieter Ag Unité de buse d'air pour réaliser un fil

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JP2002155435A (ja) * 2000-11-15 2002-05-31 Murata Mach Ltd 紡績機におけるピーシング方法及びその装置
JP2003155630A (ja) * 2001-09-05 2003-05-30 Murata Mach Ltd 紡績装置
DE10333411A1 (de) 2003-07-15 2005-02-03 Wilhelm Stahlecker Gmbh Vorrichtung zum Herstellen eines gesponnenen Fadens aus einem Stapelfaserverband
DE10353317B4 (de) * 2003-11-10 2013-06-27 Wilhelm Stahlecker Gmbh Verfahren und Vorrichtung zum Wiederherstellen eines zuvor unterbrochenen Spinnvorganges
JP3925533B2 (ja) * 2004-11-05 2007-06-06 村田機械株式会社 紡績装置、及び繊維蓄積状態の検出方法
DE102005035049A1 (de) * 2005-07-27 2007-02-01 Saurer Gmbh & Co. Kg Spinnvorrichtung zur Herstellung eines gesponnenen Fadens mittels eines umlaufenden Luftstroms

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19501545A1 (de) * 1994-01-25 1995-07-27 Murata Machinery Ltd Verfahren zum Andrehen von Garn in einer Spinnmaschine
EP0787843A1 (fr) * 1996-01-30 1997-08-06 Murata Kikai Kabushiki Kaisha Procédé de rattache pour un métier à filer
EP0807699A2 (fr) * 1996-05-16 1997-11-19 Murata Kikai Kabushiki Kaisha Procédé et dispositif de rattache pour un métier à filer
DE102005022187A1 (de) * 2005-05-13 2006-11-16 Saurer Gmbh & Co. Kg Anspinnverfahren an einer Luftspinnmaschine sowie Spinnvorrichtung und Luftspinnmaschine
EP1790760A2 (fr) * 2005-11-28 2007-05-30 Maschinenfabrik Rieter Ag Unité de buse d'air pour réaliser un fil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105239223A (zh) * 2015-10-22 2016-01-13 陕西华燕航空仪表有限公司 一种喷气涡流纺纱器

Also Published As

Publication number Publication date
CN101600825A (zh) 2009-12-09
BRPI0807711A2 (pt) 2014-06-03
DE102007009074A1 (de) 2008-08-28
CN101600825B (zh) 2011-08-31

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