EP1264020B1 - Verfahren und vorrichtung zum stauchkräuseln - Google Patents

Verfahren und vorrichtung zum stauchkräuseln Download PDF

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Publication number
EP1264020B1
EP1264020B1 EP01927686A EP01927686A EP1264020B1 EP 1264020 B1 EP1264020 B1 EP 1264020B1 EP 01927686 A EP01927686 A EP 01927686A EP 01927686 A EP01927686 A EP 01927686A EP 1264020 B1 EP1264020 B1 EP 1264020B1
Authority
EP
European Patent Office
Prior art keywords
conveying
yarn
fluid stream
conveying fluid
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.)
Expired - Lifetime
Application number
EP01927686A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1264020A2 (de
Inventor
Gerhard Koslowski
Klaus Schäfer
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 EP1264020A2 publication Critical patent/EP1264020A2/de
Application granted granted Critical
Publication of EP1264020B1 publication Critical patent/EP1264020B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D02G1/122—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes introducing the filaments in the stuffer box by means of a fluid jet

Definitions

  • the invention relates to a method for stuffer box crimping of a multifilament yarn according to the preamble of claim 1 and to an apparatus for carrying out the method according to the preamble of claim 12.
  • a multifilament synthetic continuous yarn is conveyed by means of a delivery nozzle in a crimping device.
  • the delivery nozzle has an injector which introduces a pressurized fluid into a delivery channel of the delivery nozzle.
  • the curling effect is based on the fact that the yarn is heated by using a hot medium and stored in a stuffer box adjoining the stuffer box and formed into a plug.
  • the hot fluid can escape through introduced into the compression chamber openings.
  • the yarn plug is removed by a mounted behind the crimping conveyor roller with a defined speed of the stuffer box and then cooled.
  • a further increase in the yarn speed requires a higher pressure of the pumped medium, since otherwise the yarn tension built up in the feed nozzle is insufficient to still confidently feed the yarn into the ruffling device.
  • An increased pressure of the pumped medium leads but on the other hand to the fact that the yarn plug is blown out of the compression chamber, since the frictional forces between the yarn plug and Stauchttingwandung are no longer sufficient.
  • the conveying roller downstream of the crimping device can no longer be used because of the risk of winder formation.
  • the delivery channel has a discharge zone immediately before the opening into the stuffer box of the crimping device, in which the delivery fluid guided within the delivery channel can expand.
  • the thread is thickened by the filament bundle loosens.
  • the known device thus has the disadvantage that at higher yarn speeds and thus higher fluid pressures, the expanded filament bundle hangs in the transition region between the discharge chamber and the last section of the thread channel and thus an unwanted yarn plug already arises in the discharge chamber.
  • Another disadvantage of the known device is that the filing of the thread in the stuffer box follows only in dependence on the entrained in the last part of the thread channel conveying fluids. A defined promotion of the thread in the stuffer box does not take place.
  • the invention has the particular advantage that the thread is fed into two downstream conveying stages of the crimping device.
  • the first conveyor stage is designed such that the thread is drawn into the device at a high yarn speed.
  • the thread speed in the first stage is referred to herein as the feed rate.
  • the second conveyor stage which is immediately downstream of the first conveyor stage, the yarn, which already starts at high speed, is conveyed to the crimping apparatus at a conveying speed.
  • the conveying speed in the second stage is at least equal to or greater than the feeding speed of the first stage. This ensures that a minimum thread tension in the thread is not exceeded, so that between the two stages, the filament bundle remains closed.
  • Another advantage of the invention is that the promotion of the thread in the stuffer box can be adjusted substantially only to the requirements of the plug formation. The threading of the thread to build up high yarn speeds is generated by the flow of conveying fluid in the first stage.
  • the inventive method is particularly suitable for very high yarn speeds, wherein the feed rate is at least 3,000 m / min, preferably at least 4,000 m / min.
  • the thread is preferably withdrawn by means of a drafting system from a spinning zone and taken after the drawing of the delivery nozzle of the first stage.
  • the feeding speed in the first stage is particularly important turn off that a sufficient thread tension of the incoming thread, for example, 10 cN is not exceeded.
  • the first conveying fluid flow in the first conveying stage and the second conveying fluid flow in the second conveying stage are controlled independently of one another.
  • fine adjustments can be made both to build up a thread tension in the upstream threadline and for crimping in the stuffer box.
  • the conveying fluid in the first stage is maintained at a pressure of at least 2 bar to a maximum of 15 bar, preferably at least 4 bar to a maximum of 12 bar.
  • the pressure of the conveying fluid for generating the second conveying fluid flow in a smaller range of at least 1 bar to a maximum of 8 bar, preferably at least 2 bar to a maximum of 6 bar, set.
  • the pressure of the delivery fluid in the first stage occupies a higher value than the pressure of the delivery fluid in the second stage.
  • the exact setting values are also dependent on the aforementioned parameters such as polymer type, thread tension, crimping, etc.
  • the delivery fluid for the first delivery fluid flow and the second delivery fluid flow is introduced through a common injector.
  • an expansion chamber is formed between the delivery nozzles, in which the outlet of the delivery channel of the first delivery nozzle and the inlet of the delivery channel of the second delivery nozzle open.
  • the expansion chamber is connected to a controllable throttle valve, so that a part of the first conveying fluid flow entering the expansion chamber can be discharged.
  • the portion remaining within the expansion chamber becomes the first flow of conveying fluid used to generate the second flow of conveying fluid in the downstream conveying channel.
  • crimping of 25% and a crimping stability of 85% at 4 cN / dtex yarn tension could be achieved at pre-stretched polyester yarn of specification 167f46 and 83f36 at yarn feed rates of 5100 m / min.
  • the values for crimping and crimp stability were determined according to DIN 53 840 Part 1.
  • the device according to the invention has two delivery nozzles, each with a nozzle-shaped delivery channel. Both delivery nozzles are arranged one behind the other in the direction of yarn travel, so that the outlet of a delivery channel directly opposite the inlet of the second delivery channel.
  • two delivery fluid streams are independently generated by the delivery nozzles to collect the thread in a first stage and to promote in a second downstream stage in the stuffer box of the crimping.
  • each of the delivery nozzles has an injector for introducing a respective fluid flow into the associated delivery channels.
  • the injectors can be supplied individually or jointly by a controllable pressure source. With common pressure source supply means for pressure adjustment are to be provided separately from each other.
  • the delivery nozzles are connected such that between the delivery channels an expansion chamber is formed, wherein the outlet cross-section of the opening into the expansion chamber delivery channel is greater than the narrowest cross section of the downstream conveyor channel, so that a promotion of the delivery fluid in the downstream delivery channel remains guaranteed.
  • the expansion chamber in this case connected to a controllable throttle valve.
  • the delivery channel formed in the first delivery nozzle is preferably designed as a Laval nozzle, so that in a narrowest cross-section of the Laval nozzle the delivery fluid can reach the speed of sound.
  • the delivery channel of the second delivery nozzle opens directly into the stuffer box.
  • outlet of the conveying channel and the inlet of the stuffer box are arranged in a vacuum chamber.
  • the compression chamber is connected via opening slots with the vacuum chamber, which is connected to a controllable vacuum source.
  • the crimping device is preferably arranged downstream of a cooling drum.
  • the yarn plug is guided on the circumference of the cooling drum and cooled by a cooling medium, preferably cooling air.
  • Fig. 1 schematically an arrangement with a device according to the invention for carrying out the method according to the invention is shown.
  • the thread 1 is fed in the direction of yarn 2.
  • the thread 1 can be fed directly from a spinning device or from a supply spool.
  • the arrangement consists in the thread running direction seen from a first godet unit 3, a downstream pair of godets 4 and a Stauchkhoffselvorraum 5.
  • the Stauchkhoffselvorraumiques 5 is a cooling drum 7 downstream. In the yarn path behind the cooling drum 7, a further godet unit 8 is provided.
  • the yarn 1 is withdrawn from the godet unit 3, which is formed of a driven godet and an overflow roll, from a spinning device or a supply spool.
  • the thread 1 is stretched between the godet unit 3 and the godet pair 4.
  • the godet pair 4 is formed from two driven godets, wherein preferably at least one of the godets is designed to be heated.
  • the thread 1 is subsequently drawn into the shrub crumbling device 5, conveyed and formed into a thread stopper 6.
  • the yarn is crimped under the action of hot air or steam to form loops to the yarn plug 6, which is cooled on a cooling line designed here as a cooling drum.
  • the crimp is fixed.
  • the godet unit 8 of the crimped yarn 1 is withdrawn from the cooling drum 7, wherein the yarn plug 6 dissolves again, the curl of the filaments is maintained, however.
  • a first embodiment of the in Fig. 1 schematically illustrated shrub crimper is in Fig. 2 shown schematically in a section.
  • the Stauchköselvorraum 5 consists of a first Delivery nozzle 24, a second delivery nozzle 25 and a crimping device 26.
  • the delivery nozzles 24 and 25 and the crimping device 26 are hereby joined together to form a component.
  • the delivery nozzle 24 has a nozzle-shaped delivery channel 13, which is connected on the upper side with a thread inlet 9 and on the underside with an expansion chamber 14.
  • the delivery channel 13 is preferably formed as a lavalone nozzle.
  • the delivery nozzle 24 has an injector 12.
  • the injector 12 is connected via an inlet 11 with a pressure source, not shown here.
  • the injector 12 opens into the delivery channel 13 with a plurality of injector bores.
  • the delivery nozzle 25 has a delivery channel 16, which opens on the top in the Expensionshunt 14 and is connected on the bottom with a stuffer box 17 of the crimping device 26. Between the delivery channel 13 of the first delivery nozzle 24 and the delivery channel 16 of the second delivery nozzle 25, the expansion chamber 14 is formed. The expansion chamber 14 is coupled via a discharge channel 15 with a throttle valve 27.
  • the crimping device 26 has a stuffer box 17.
  • the stuffer box 17 is surrounded by a vacuum chamber 19 in the upper area.
  • the vacuum chamber 19 is connected to a vacuum source 20.
  • the stuffer box 17 and the vacuum chamber 19 are connected to one another via a plurality of slot-shaped openings 18.
  • the openings 18 are made in the cylindrical chamber wall of the stuffer box 17 in the region of the vacuum chamber 19. Outside the vacuum chamber 19, the outlet opening 21 of the stuffer box 17 is formed.
  • the thread 1 is drawn through the thread inlet 9 in the conveying channel 13 with a retraction speed.
  • a delivery fluid 10 is introduced via the inlet 12 into the delivery channel 13 via an inlet 11.
  • the pressure of the conveying fluid 10 at the inlet 11 is dimensioned such that the drawing speed of the thread 1 maintains a sufficient thread tension at the thread inlet 9.
  • the conveying fluid 10 is guided within the conveying channel 13 to a first conveying fluid flow, which promotes the thread 1.
  • the conveying fluid flow and the thread 1 pass through the conveying channel 13, which is designed in this embodiment as a Laval nozzle.
  • the conveying fluid flow is expanded and the pressure of the conveying fluid 10 decreases.
  • a partial flow of the conveying fluid is discharged through the discharge channel 15 via the throttle valve 27.
  • the amount of the partial flow 10.1 is adjustable.
  • a remaining part stream 10.2 of the conveying fluid is generated by means of the conveying channel 16 of the second delivery nozzle 25 to a second conveying fluid flow, which promotes the thread 1 with a conveying speed in the stuffer box 17.
  • the pressure in the expansion chamber 14 is dimensioned so that the second conveying fluid flow causes a conveying speed of the thread, which is at least equal to but preferably greater than the feed rate of the thread.
  • a thread tension in the thread is thereby generated between the steps, which prevents premature dissolution of the filament bundle and thus ensures a safe further promotion of the thread in the stuffer box 17.
  • a brake fluid 22 is guided via a feed opening 23 in the stuffer box 17, that the brake fluid 22 exerts a decelerating effect on the thread 1 and thus initiates the congestion to form the plug 6.
  • FIG. 3 schematically another embodiment of a Stauchkhoffselvorraumiques is shown, as for example in the arrangement of Fig. 1 could be used.
  • the Stauchkhoffselvorraum consists of a first delivery nozzle 24, a second delivery nozzle 25 and a crimping device 26.
  • the delivery nozzle 24 is formed as a separate component.
  • the delivery nozzle 25 and the crimping device 26 are integrated into one component.
  • the delivery nozzle 24 and the crimping device 26 are identical in construction to the embodiment according to FIG Fig. 2 , In that regard, reference is made to the preceding description.
  • the second delivery nozzle 25 is arranged.
  • the delivery nozzle 25 has a nozzle-shaped delivery channel 16, which is connected on the upper side with a thread inlet 9.2 and on the bottom with the compression chamber 17 of the crimping device 26.
  • the delivery channel 16 is associated with an injector 12.2.
  • the injector 12.2 is connected via the inlet 11.2 with a pressure source, not shown here. Via the inlet 11.2 and the injector 12.2, a pressurized conveying fluid is introduced into the conveying channel 16.
  • the conveying fluid is guided to a conveying fluid flow, which conveys the thread 1 through the conveying channel 16 into the stuffer box 17.
  • the flow of conveying fluid in the delivery nozzle 24 is formed by the delivery fluid, which is supplied to the delivery channel 13 through the injector 12.1.
  • the second flow of conveying fluid in the delivery nozzle 25 is formed by the delivery fluid, which is introduced through the injector 12.2 in the delivery channel 16.
  • the method according to the invention and the device according to the invention are characterized in that two feed fluid flows which can be generated independently of one another are used to draw in the yarn and to convey the yarn into the stuffer box.
  • the pressure of the fluid supplied may be selected so as to maintain a minimum thread tension.
  • pressures of up to 15 bar are possible.
  • the fluid for conveying the yarn into the stuffer box in its pressure is dimensioned such that a secure plug formation is ensured within the stuffer box.
  • the pressure of the fluid for conveying the thread is in this case preferably set between a value of 2 bar to a maximum of 6 bar.
  • the inventive method is suitable for all types of polymers.
  • yarns of polyester, polyamide or polypropylene can be used. All types of polyester such as PET, PPT or PTT are suitable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Disintegrating Or Milling (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP01927686A 2000-03-01 2001-02-22 Verfahren und vorrichtung zum stauchkräuseln Expired - Lifetime EP1264020B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10009988 2000-03-01
DE10009988 2000-03-01
PCT/EP2001/001993 WO2001064982A2 (de) 2000-03-01 2001-02-22 Verfahren und vorrichtung zum stauchkräuseln

Publications (2)

Publication Number Publication Date
EP1264020A2 EP1264020A2 (de) 2002-12-11
EP1264020B1 true EP1264020B1 (de) 2008-10-01

Family

ID=7633122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01927686A Expired - Lifetime EP1264020B1 (de) 2000-03-01 2001-02-22 Verfahren und vorrichtung zum stauchkräuseln

Country Status (10)

Country Link
US (1) US6826813B2 (ko)
EP (1) EP1264020B1 (ko)
JP (1) JP2003525359A (ko)
KR (1) KR100746053B1 (ko)
CN (1) CN1218073C (ko)
AT (1) ATE409763T1 (ko)
AU (1) AU2001254657A1 (ko)
DE (1) DE50114368D1 (ko)
MX (1) MXPA02008443A (ko)
WO (1) WO2001064982A2 (ko)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1397541B2 (de) * 2001-05-10 2012-02-15 Oerlikon Textile GmbH & Co. KG Vorrichtung zum stauchkräuseln eines synthetischen multifilen fadens
JP4386845B2 (ja) 2003-01-15 2009-12-16 ザウラー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト 合成の糸を紡糸しかつ捲縮するための方法及び装置
DE102004022469A1 (de) * 2004-05-06 2005-12-01 Saurer Gmbh & Co. Kg Verfahren und Vorrichtung zum Stauchkräuseln eines multifilen Fadens
US7168141B2 (en) * 2004-07-09 2007-01-30 Saurer Gmbh & Co. Kg Method and apparatus for stuffer box crimping a multifilament yarn
JP4786255B2 (ja) * 2005-08-29 2011-10-05 株式会社日立製作所 ストレージシステム及び記憶制御方法
DE102012004747A1 (de) * 2012-03-08 2013-09-12 Oerlikon Textile Gmbh & Co. Kg Kräuselvorrichtung
US9951445B2 (en) * 2012-08-23 2018-04-24 Columbia Insurance Company Systems and methods for improving and controlling yarn texture
US9896786B2 (en) 2012-08-23 2018-02-20 Columbia Insurance Company Systems and methods for improving and controlling yarn texture
DE102013003408A1 (de) * 2013-02-28 2014-08-28 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zum pneumatischen Fördern und Führen eines multifilen Fadens
CN103243423A (zh) * 2013-05-29 2013-08-14 济南大自然化学有限公司 纤维丝束与卷曲机自动对接装置
CN104233546A (zh) * 2013-06-06 2014-12-24 安吉登冠竹木开发有限公司 一种竹纤维的制作方法
DE102013011888A1 (de) * 2013-07-17 2015-01-22 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zur Wärmebehandlung eines laufenden Faserstranges
BE1021905B1 (nl) * 2014-07-18 2016-01-26 Iropa Ag Textureerinrichting
DE102017005161A1 (de) * 2017-05-31 2018-12-06 Oerlikon Textile Gmbh & Co. Kg Verfahren und Schmelzspinnvorrichtung zur Herstellung eines gekräuselten mehrfarbigen Verbundfadens

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Also Published As

Publication number Publication date
US6826813B2 (en) 2004-12-07
ATE409763T1 (de) 2008-10-15
WO2001064982A3 (de) 2002-03-14
EP1264020A2 (de) 2002-12-11
CN1218073C (zh) 2005-09-07
KR20020084166A (ko) 2002-11-04
CN1406293A (zh) 2003-03-26
JP2003525359A (ja) 2003-08-26
KR100746053B1 (ko) 2007-08-03
DE50114368D1 (de) 2008-11-13
US20040031134A1 (en) 2004-02-19
WO2001064982A2 (de) 2001-09-07
MXPA02008443A (es) 2002-12-13
AU2001254657A1 (en) 2001-09-12

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