EP1907612A1 - Procede pour amorcer le filage sur une machine a filer a jet d'air et dispositif de filage et machine a filer a jet d'air - Google Patents

Procede pour amorcer le filage sur une machine a filer a jet d'air et dispositif de filage et machine a filer a jet d'air

Info

Publication number
EP1907612A1
EP1907612A1 EP06723770A EP06723770A EP1907612A1 EP 1907612 A1 EP1907612 A1 EP 1907612A1 EP 06723770 A EP06723770 A EP 06723770A EP 06723770 A EP06723770 A EP 06723770A EP 1907612 A1 EP1907612 A1 EP 1907612A1
Authority
EP
European Patent Office
Prior art keywords
spinning
thread
auxiliary
auxiliary thread
piecing
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.)
Granted
Application number
EP06723770A
Other languages
German (de)
English (en)
Other versions
EP1907612B1 (fr
Inventor
Thomas Weide
Helmut Feuerlohn
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Oerlikon Textile GmbH and 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 and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Publication of EP1907612A1 publication Critical patent/EP1907612A1/fr
Application granted granted Critical
Publication of EP1907612B1 publication Critical patent/EP1907612B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/002—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for false-twisting spinning machines
    • 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

  • the invention relates to a piecing method on an air spinning machine according to the preamble of claim 1 and to a spinning device and an air spinning machine for carrying out the piecing process.
  • Air-jet spinning machines usually comprise spinning devices to which a drafting device feeds a fiber ribbon drawn to a fiber bundle.
  • the sliver passes through a spinneret, in which it is acted upon by vortex air streams and thereby provided with a real wire or a real twist.
  • a hollow spinning cone Downstream of the spinneret, a hollow spinning cone is positioned, through which the sliver is withdrawn as a thread from an outlet opening and then wound up on a take-up spool as an upper thread.
  • DE 3611050 A1 describes a spinning unit which is intended to produce bobbins serving as feed bobbins. On the feed bobbins essentially untwisted thread components are wound up. For piecing two auxiliary threads are each deducted from an auxiliary coil. The ends of the auxiliary threads are transferred by means of thread clamps an extraction and then inserted from the thread clamps in a trained as a pair of rollers take-off device, then in the false twisting device and finally from the side in the pair of output rollers of a drafting system.
  • the activated false twisting device acts on the auxiliary threads with a false twist.
  • the auxiliary threads transport the false twist counter to the thread running direction up to the exit rollers of the Drafting system.
  • a fiber strand is fed to the current auxiliary threads of the drafting system.
  • the auxiliary threads and their respective supplied fiber strand is now issued together from the false twisting device of the output rollers of the drafting system to the false twist device a false twist.
  • the spinning unit of DE 3611050 Al is not suitable to produce a spun yarn with real twist. Insertion of the auxiliary threads according to the disclosure of DE 3611050 A1 from the side is not possible when using air-spinning devices which work with twist-blocking device and hollow spinning cone.
  • EP 1 072 702 A2 describes as the state of the art an air-spinning machine in which the end of the upper thread is transported by means of a transfer arm into the vicinity of the outlet opening of the spinning cone designated as the spindle at the start or at yarn breakage. From there, the upper thread runs from the direction of the thread feed side from opposite direction through the spinning cone and the spinneret and is sucked into a suction element. The fiber bundle on the delivery side, which emerges from the drafting system, is also sucked into the suction element and engulfed with the upper thread. The two entangled threads are then sucked into the spinneret for bonding. In this method, the upper thread must be advanced from the spinning device to the suction element in the opposite direction to the spinning operation.
  • EP 1 072 702 A2 proposes a spinning device for an alternative piecing process.
  • This spinning device has a spinning cone with spinnerets near the tip and with an axially extending spun yarn passage through which the spun yarn is withdrawn.
  • the spun yarn channel widens stepwise towards its yarn outlet side.
  • These piecing nozzles serve to generate vortex air streams in the spinning cone by means of supplied compressed air, by means of which a negative pressure is generated at the tip of the spinning cone.
  • the fiber bundle supplied by a drafting device is first subjected to a rotational flow and conveyed to the mouth of the spinning thread channel at the tip of the spinning cone. Due to the negative pressure generated there by the activated piecing nozzles, the fiber bundle is sucked into the spun yarn channel, is acted on passing the piecing nozzles with a rotational flow which is opposite to the spinnerets and transported by the outflowing compressed air to the yarn exit end of the spinning cone.
  • the piecing nozzles briefly impart a false twist to the fiber bundle during piecing.
  • the piecing nozzles are deactivated, and then a normal thread is spun with real wire.
  • the yarn portion spun with falsewire is cut off and the end of the rewoven yarn is bonded to the end of the upper yarn withdrawn from the package by a splicer. So that the tip of the fiber bundle can be sucked into the spinning cone during piecing, the bore diameter of the mouth of the spun yarn channel must have a minimum size, which is for example 1 mm in diameter. The limitation of the bore diameter leads to significant limitations in influencing the yarn character.
  • the invention allows a simple threading of a piecing thread and reduces the number of failed Anspinn dripen.
  • the yarn character can be better influenced. If a splice connection is selected, only a virtually yarn-like splice connection remains in the finished yarn, which does not lead to a reduction in the quality of the finished product.
  • the auxiliary thread differs in its properties from the rest of the thread, the auxiliary thread can be selected so that a better threading is achieved with it.
  • Particularly suitable is an auxiliary thread that is stiffer and / or smoother than the rest of the thread. It may also be advantageous if the auxiliary thread is firmer or finer than the rest of the thread.
  • an auxiliary thread Compared with the method of inserting the end of an upper thread into the spinning device in the direction opposite to the spinning direction normal to the spinning operation before being spun, the use of an auxiliary thread enables a marked improvement in threading. In particular, then an improvement is observed when, instead of just a fiber bundle, in the Spinning normal thread running direction to introduce the spinning device before spinning, an auxiliary thread is used.
  • the introduction of the auxiliary thread into the spinning device takes place in two stages.
  • the introduction of the auxiliary thread in the sliver channel is made in front of the spinneret device by means of injector flow and in a second stage, the introduction of the auxiliary thread into the spinning cone by applying the spinning cone with negative pressure.
  • the spinneret and the spinning cone so far apart positioned so that the auxiliary thread between the spinneret and the spinning cone can be detected manually. This allows threading to be performed essentially manually in a simple manner. But it is also possible to automate the handling, at least partially.
  • a splicing of the thread ends can be suitably prepared if the spinning device has a first clamping device for temporary clamping of the upper thread and a second clamping device for temporary clamping of the auxiliary thread.
  • the second clamping device is a transport means for conveying the auxiliary thread and then following rewoven thread.
  • the spinning device preferably has the following components: A storage means for storing the auxiliary thread and the rewoven thread, a separating means for separating the auxiliary thread from the thread and a splicing means for connecting the newly spun thread with the upper thread.
  • these components can be arranged stationarily at the spinning station of the air spinning machine.
  • these components can be arranged exclusively on at least one operating carriage which can be moved along the spinning devices of the air-spinning machine. As a result, the structural complexity of the air-spinning machine can be reduced.
  • At least one clamping device for temporary clamping of the auxiliary thread on the operating carriage is arranged.
  • FIG. 2 is a spinning device of an air spinning machine with upstream drafting, partially in section and simplified, in comparison with Figure 1 enlarged view,
  • FIG. 4 shows the spinning device of FIG. 3 with threaded auxiliary thread
  • FIG. 5 shows a schematic representation of a spinning station with operating carriage in side view, before the splicing process
  • FIG. 6 shows the spinning station of FIG. 5 after the splicing operation
  • FIG. 7 shows the spinning station of FIG. 5 in normal spinning operation
  • Fig. 8 is a schematic representation of a spinning station in
  • FIG. 9 shows the spinning station of FIG. 8 before the splicing operation during the piecing process
  • FIG. 10 shows the spinning station of FIG. 8 during the splicing process.
  • the air spinning machine 1 shown in Figure 1 has a plurality of in parallel juxtaposed spinning stations 2.
  • Each spinning station 2 comprises a sliver source 3, which may be formed, for example, as a spinning can, a drafting unit 4, a spinning device 5, a take-off roller pair 6, a yarn cleaner 7, a yarn laying device 8 and a package formed as a cheese 9 package.
  • An operating carriage 10 is guided along the spinning stations 2, on rails 11, 12, movable.
  • a drive unit 13 is arranged at one end of the air-spinning machine.
  • FIG. 2 shows a drafting system with subsequent spinning device 5 and the passage of the fibers.
  • the fiber sliver 14 drawn off from the sliver source 3 is drawn in by the upper and lower roller pair 15, 15A, which are arranged as input rollers, and is connected to the upper and lower roller pairs 16, 16A; 17, 17A; 18, 18A stretched.
  • a first component of the spinning device 5 is a tweezer-like twisting device 53rd and a spinnerette device 19 is arranged.
  • the nozzles 20, 21 are connected via the line 22 to a compressed air source 23.
  • the air flowing out of the nozzles 20, 21 generates a rotational flow, with which the stretched sliver 24 is acted upon.
  • the second component of the spinning device 5 carries a hollow spinning cone 25.
  • the thread 26 formed in cooperation of spinneret device 19 and spinning cone 25 is withdrawn from the spinning device 5 through the hollow spinning cone 25.
  • the air chamber 27 surrounding the spinning cone 25 is connected by means of the line
  • an auxiliary thread 30 is used for piecing.
  • the free end of the auxiliary thread 30 is withdrawn from the auxiliary thread bobbin 31, passed through a cutter 37 and positioned in the vicinity of the junction 32 of the sliver channel 33. Then, the spinneret 19 is acted on the line 22 for a short time with compressed air from the compressed air source 23.
  • the air flowing from the nozzles 20, 21 generates a negative pressure in the sliver channel 33, through which the free end of the auxiliary thread 30 is threaded into the sliver channel 33 and transported further in the vicinity of the junction 34 of the spinning cone 25.
  • a flexible line 35 connected to the vacuum source 29 negative pressure is applied to the outlet 36 of the spinning cone 25 and the auxiliary thread 30 is drawn through the spinning cone 25 into the line 35. This condition is shown in FIG. Subsequently, the first and the second component is moved back to its starting position shown in Figure 2.
  • the positioning of the first and the second component and the auxiliary thread 30 takes place manually in the embodiment.
  • An automatic or semi-automatic positioning is possible using appropriate components.
  • FIG. 5 shows a first phase of a piecing process at a spinning station 2 using an operating carriage 10.
  • the operating carriage 10 is positioned at the spinning station 2, at which it is intended to be spun.
  • the upper thread 38 is withdrawn from the cheese 9, wherein the upper thread 38 passes through the thread laying device 8 and the yarn cleaner 7 and is inserted into the splicing device 39.
  • the free end of the upper thread 38 is clamped in a first clamping device 40.
  • the auxiliary thread 30 is guided by the withdrawal roller pair 6, 6A and further manually by the conveyor roller pair 41, 4IA and inserted into the splicing device 39.
  • the end of the auxiliary thread 30 is clamped in a second clamping device 42.
  • the second clamping device 42 is now released, the vacuum 43 applied with negative pressure and the conveyor rollers 41, 4IA set in rotation.
  • sliver 24 is conveyed to the junction 32 of the sliver channel 33 and the spinning device 5 is activated.
  • the sucked fibers of the sliver 24 are connected in the spinning device 5 on the current auxiliary thread 30.
  • the auxiliary thread 30 is severed by means of the cutting device 37 and the thread 26 is now formed only from the supplied sliver 24.
  • the auxiliary thread 30 including the portion to which the fibers of the sliver 24 are tied is taken up by the suction 43, the thread 26 in the Clamping device 42 clamped.
  • the thread section containing the auxiliary thread 30 is separated at the clamping device 42 and sucked off by means of the suction device 43.
  • the splicing device 39 is actuated.
  • the yarn 26 continuously spun by the spinning device 5 is taken up by the yarn store 44 and stored. Further explanations of spinning devices on air-spinning machines, for example, DE 38 24 850 Al.
  • the friction roller 45 is applied to the cheese 9 as shown in FIG.
  • the cross-wound bobbin 9 is rotated by means of the driven friction roller 45 and winds up the upper thread 38.
  • the upper thread 38 is wound up a little faster than it is supplied by the spinning device 5 until the thread store 44 is emptied again.
  • FIG 8 shows an alternative embodiment of the spinning station 2 in the spinning operation.
  • the spinning unit 2 shown here comprises a sliver source 3, a drafting unit 4, a spinning device 5, a pair of withdrawal rollers 6, 6A, a yarn cleaner 7, a yarn laying device 8 and a cheese 9 as a package.
  • the spinning station 2 shown in Figure 8 also includes an auxiliary thread reel 31A, a cutting device 46, a splicing device 47, a first clamping device 48 for the upper thread 38, a splitter 47 associated cutting device 49, a pivotally mounted suction tube 50 and a yarn store 51.
  • the auxiliary thread 30 is subtracted from the auxiliary thread bobbin 31A, guided by the cutter 46 and threaded into the spinning device 5 according to the method already described above with reference to Figures 2 to 4 and then manually passed through the pair of withdrawal rollers 6, 6A.
  • the upper thread 38 is subtracted from the cheese 9, inserted into the clamping device 48 and clamped there.
  • the suction tube 50 is pivoted from its initial position to the position shown in dashed lines.
  • At the free end of the suction tube 50 carries a clamping device 52.
  • At the pivot axis 53 of the suction tube 50 opens a line, not shown, with which the suction tube 50 is temporarily connectable to the vacuum source 29.
  • the free end of the auxiliary thread 30 is sucked by applying negative pressure in the suction tube 50 and clamped by the clamping device 52.
  • the suction tube 50 pivots back to the starting position.
  • the auxiliary thread 30 is inserted into the splicing device 47 and into the cutting device 49.
  • the clamping device 52 is opened, the piecing process started and the supplied from the drafting 4 fibers of the sliver 24 is connected to the auxiliary thread 30. This phase is shown in FIG.
  • the auxiliary thread 30 is severed by the cutter 46.
  • the clamping device 52 is activated.
  • a period of time between cutting through the auxiliary thread 30 and activating the clamping device 52 can be specified, which is sufficiently large to safely completely suck the thread section with the auxiliary thread 30 into the suction tube 50.
  • the thread section containing the auxiliary thread 30 is separated by means of the cutting device 49 and sucked by means of the suction tube 50.
  • the splicing device 47 carries a Splicing operation for connecting upper thread 38 and the thread 26 through.
  • the thread 26 contains no auxiliary thread 30 more.
  • the yarn 26 spun during the splicing operation is sucked into the yarn storage 51 as shown in FIG.
  • the upper thread 38 is released by the splicing device 47 and the cross-wound bobbin 9 is rotated by a drive, not shown, for winding up the upper thread 38 in the direction of the arrow.
  • the upper thread 38 is first wound with a slightly higher thread speed, as the thread 26 is supplied by the spinning device 5 until the thread store 51 is emptied again. Now the normal spinning operation is recorded, as shown in Figure 8.

Abstract

L'invention concerne un procédé pour amorcer le filage sur une machine à filet à jet d'air, comportant au moins un dispositif de filage (5) dans lequel une unité filière, produisant un flux d'injection, coopère avec un cône de filage creux pour former un fil. Selon ce procédé, on utilise un fil auxiliaire (30) sur lequel le filage est amorcé. Ensuite, le fil auxiliaire (30) est rejeté et le fil (26) qui vient d'être filé est épissé avec l'extrémité du fil supérieur (38). Un premier dispositif de pincement (48) servant à pincer de manière temporaire le fil supérieur (38) et un deuxième dispositif de pincement (52) servant à pincer de manière temporaire le fil auxiliaire (30) sont associés au dispositif de filage (5). La machine à filet à jet d'air peut être équipée d'un chariot de commande (10) pouvant se déplacer le long des zones de filage (2).
EP06723770A 2005-05-13 2006-03-28 Procede pour amorcer le filage sur une machine a filer a jet d'air et dispositif de filage et machine a filer a jet d'air Expired - Fee Related EP1907612B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005022187A DE102005022187A1 (de) 2005-05-13 2005-05-13 Anspinnverfahren an einer Luftspinnmaschine sowie Spinnvorrichtung und Luftspinnmaschine
PCT/EP2006/002795 WO2006122605A1 (fr) 2005-05-13 2006-03-28 Procede pour amorcer le filage sur une machine a filer a jet d'air et dispositif de filage et machine a filer a jet d'air

Publications (2)

Publication Number Publication Date
EP1907612A1 true EP1907612A1 (fr) 2008-04-09
EP1907612B1 EP1907612B1 (fr) 2012-01-25

Family

ID=36676001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06723770A Expired - Fee Related EP1907612B1 (fr) 2005-05-13 2006-03-28 Procede pour amorcer le filage sur une machine a filer a jet d'air et dispositif de filage et machine a filer a jet d'air

Country Status (6)

Country Link
US (1) US7594382B2 (fr)
EP (1) EP1907612B1 (fr)
JP (1) JP4801146B2 (fr)
CN (1) CN101171374B (fr)
DE (1) DE102005022187A1 (fr)
WO (1) WO2006122605A1 (fr)

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DE102012102695A1 (de) * 2012-03-29 2013-10-02 Maschinenfabrik Rieter Ag Vorspinnmaschine mit einer Anordnung zur Detektion und Entfernung von Garnfehlern
DE102012108380A1 (de) * 2012-06-19 2013-12-19 Maschinenfabrik Rieter Ag Luftspinnmaschine und Verfahren zum Betrieb derselben
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DE102015108706A1 (de) * 2015-06-02 2016-12-08 Maschinenfabrik Rieter Ag Spinnstelle einer Luftspinnmaschine sowie Verfahren zum Betrieb derselben
JP2017001836A (ja) * 2015-06-11 2017-01-05 村田機械株式会社 糸巻取機及び紡績機
CZ2015816A3 (cs) * 2015-11-16 2017-05-10 Rieter Cz S.R.O. Způsob přípravy pracovního místa pro obnovení předení na tryskovém dopřádacím stroji a tryskový dopřádací stroj k jeho provádění
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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
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CN107881606A (zh) * 2017-12-21 2018-04-06 苏州市星京泽纤维科技有限公司 一种改良型涡流纺纱装置
CN108286093B (zh) * 2018-02-26 2023-10-31 安徽日发纺织机械有限公司 一种纺纱机
DE102018105933A1 (de) * 2018-03-14 2019-09-19 Maschinenfabrik Rieter Ag Verfahren zum Bilden einer Fadenschlaufe und zum Separieren eines anzusetzenden Fadenstücks und eines abzuführenden Fadenstücks, Druckrollereinheit sowie Saugdüse
DE102019129499A1 (de) * 2019-10-31 2021-05-06 Saurer Spinning Solutions Gmbh & Co. Kg Offenend-Spinnmaschine sowie Verfahren und Steuereinrichtung zum Betreiben einer solchen Offenend-Spinnmaschine
EP3835467A1 (fr) * 2019-12-09 2021-06-16 Saurer Intelligent Technology AG Procédé de nettoyage d'un dispositif de filage à jet d'air d'un poste de filage, dispositif de filage à jet d'air et unité de formation de fil pour un tel dispositif de filage à jet d'air
DE102020108257A1 (de) * 2020-03-25 2021-09-30 Saurer Spinning Solutions Gmbh & Co. Kg Vorrichtung zur Faservereinzelung und Spinneinrichtung umfassend eine solche Vorrichtung
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CN115074880A (zh) * 2022-05-12 2022-09-20 东华大学 一种环锭纺细纱近原位自动接头方法及装置

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Also Published As

Publication number Publication date
CN101171374A (zh) 2008-04-30
US20090094958A1 (en) 2009-04-16
US7594382B2 (en) 2009-09-29
DE102005022187A1 (de) 2006-11-16
JP2008540861A (ja) 2008-11-20
WO2006122605A1 (fr) 2006-11-23
JP4801146B2 (ja) 2011-10-26
EP1907612B1 (fr) 2012-01-25
CN101171374B (zh) 2010-05-19

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