EP1802792B1 - Metier a filer a buses d'air - Google Patents

Metier a filer a buses d'air Download PDF

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Publication number
EP1802792B1
EP1802792B1 EP05799748A EP05799748A EP1802792B1 EP 1802792 B1 EP1802792 B1 EP 1802792B1 EP 05799748 A EP05799748 A EP 05799748A EP 05799748 A EP05799748 A EP 05799748A EP 1802792 B1 EP1802792 B1 EP 1802792B1
Authority
EP
European Patent Office
Prior art keywords
spinning
pressure
compressed air
static pressure
spinning machine
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.)
Revoked
Application number
EP05799748A
Other languages
German (de)
English (en)
Other versions
EP1802792A1 (fr
Inventor
Gernot SCHÄFFLER
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=35539640&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1802792(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP1802792A1 publication Critical patent/EP1802792A1/fr
Application granted granted Critical
Publication of EP1802792B1 publication Critical patent/EP1802792B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • 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
    • 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
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/16—Framework; Casings; Coverings ; Removal of heat; Means for generating overpressure of air against infiltration of dust; Ducts for electric cables

Definitions

  • the invention relates to an air jet spinning machine for producing spun yarns of staple fiber composites, with a plurality of spinning stations, each of which compressed air nozzles are assigned to produce a spinning spin, and with these spinning stations upstream, a pressure sensor and a controller containing common compressed air regulator for adjusting the measured static pressure.
  • an air jet spinning machine whose compressed air regulator reacts to a change in the continuously measured spinning tension.
  • it is attempted to keep the spinning tension constant by adjusting the pressure acting on the compressed-air nozzles accordingly.
  • a pressure sensor is assigned to the compressed air controller, which inputs the measured values into a control unit for evaluation.
  • the control unit contains a control device for varying the respective pressure.
  • the problem is somewhat different in that it is not intended to adapt the pressure present at the compressed air nozzles to the measured spinning tension, respectively. Rather, a problem is to be solved, which is that in a longer air jet spinning machine acting on the compressed air inlet static pressure is dependent on how many spinning units are currently in operation.
  • the compressed air inlet of an air jet spinning machine namely the operating pressure of the spinning is on, which is considered to be constant and is usually 6 bar.
  • this static pressure may drop below 5 bar. If only some of the spinning stations are in operation, the drop in static pressure is correspondingly lower.
  • the latter is for example when starting the air jet spinning machine or then the case when some spinning stations temporarily fail due to a thread breakage.
  • the invention is based on the object, regardless of how many spinning stations of an air jet spinning machine are in operation, always maintain the same static pressure.
  • the object is achieved in that the compressed air regulator is set to a reference pressure, which corresponds to the unregulated static pressure when all spinning stations are in operation, and that the compressed air regulator regulates the reference pressure with a change in the static pressure.
  • the compressed air regulator which contains a pressure sensor and a control device, is now designed as a genuine actuator, whereby the static pressure at the compressed air inlet of the air jet spinning machine can be kept constant. If, for example, if some spinning stations fail, the static pressure increases, it is reduced to the reference pressure by the compressed air regulator. If the failed spinning units are then put back into operation, the regulated-down pressure continues to drop, which is then raised again to the reference pressure by the compressed-air regulator.
  • the reference pressure can not be greater than the smallest unregulated static pressure when all the spinning stations of an air jet spinning machine are in operation. However, it is quite possible to choose the reference pressure smaller than the static pressure mentioned.
  • the selected reference pressure is less than the unregulated static pressure when all spinning stations are in operation.
  • Such a reduced reference pressure is quite possible within certain limits and offers the advantage that the static pressure can be controlled in each case both up and down.
  • This "pressure clearance" makes it possible, for example, not only to keep the static pressure constant, but also to vary the yarn twist in certain areas at a given take-off speed of the spun yarn.
  • An air jet spinning machine contains a large number of spinning stations, of which in FIG. 2 only two spinning stations 1 and 2 are shown schematically. Each spinning station 1, 2 serves to produce a spun yarn 3 from a staple fiber strand 4.
  • a spinning station 1, 2 contains as essential components a drafting unit 5, of which only one delay zone delimiting delivery roller pair 6 is shown, also an air jet unit 7, a pair of take-off rollers 8 and a winding device, not shown.
  • the supplied in the feed direction A staple fiber strand 4 is warped in the respective drafting 5 to the desired fineness.
  • the drawn in the withdrawal direction B thread 3 then receives its spin twist.
  • the individual Heild üsenaggregaten 7 are each assigned a plurality of compressed air nozzles 9, as is often known by the prior art, so that the spinning process itself is not discussed here.
  • the individual compressed air nozzles 9 advantageously start from an annular space 10, wherein the annular spaces 10 of all the air nozzle units 7 are connected to an upstream common compressed air line 11.
  • This compressed air line 11 receives the installed in the respective spinning operating pressure of, for example, 6 bar and can be regarded as a kind of memory for the air jet spinning machine.
  • the existing at the compressed air inlet of the air jet spinning machine static pressure is now dependent on the number of currently in operation spinning stations 1, 2 ... the air jet spinning machine. If only a few spinning stations 1, 2 ... are in operation, then the static pressure present in the compressed air line can be approximately equated to the operating pressure installed in the spinning mill. If, on the other hand, all existing spinning stations 1, 2... Of the air jet spinning machine are in operation, then the static pressure drops markedly at the compressed air inlet of the air jet spinning machine, possibly by more than 1 bar. It It is obvious that this makes the intensity of the twist distribution of the individual threads 3 and thus the yarn quality different. This should be avoided according to the invention.
  • FIG. 1 represented as a diagram in which the abscissa on the number z of currently operating spinning stations 1, 2 ... and on the ordinate of the existing static pressure p s is plotted.
  • an upstream common compressed air regulator is now provided which is to keep the static pressure p s constant.
  • the compressed air regulator is set to a so-called reference pressure p R.
  • This reference pressure p R can, like the FIG. 1 clarified, not be greater than the already explained static pressure p u .
  • the reference pressure p R may be slightly smaller than the pressure p u . In any case, the reference pressure p R corresponds to that unregulated static pressure p u , when all spinning stations 1, 2 ... are in operation.
  • the compressed air regulator now contains a pressure sensor 12 for measuring the total existing at the compressed air inlet of the air jet spinning machine or the machine section static pressure and a controller 13.
  • the latter acts on a throttle valve 14 of the compressed air line 11 a.
  • This allows the compressed air controller at a change in the static pressure p s in the manner already explained constantly adjust the reference pressure p R. If, for example, some spinning stations 1,2 fail, the static pressure p s measured at the pressure sensor 12 increases. In this case, the reference pressure pR is immediately adjusted again via the control unit 13 and the throttle valve 14. In the opposite case, if failed spinning stations 1, 2 ... again in operation are, the regulated down pressure, but then again up to the reference pressure p R is controlled.
  • the reference pressure p R can optionally be equated to the static pressure p u . If, however, the reference pressure p R is chosen to be somewhat lower, then there is a certain margin for the regulation e both upwards and downwards. This can be used to vary within certain limits the thread 3 issued swirl.

Landscapes

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

Abstract

L'invention concerne un métier à filer à buses d'air servant à produire des filés à partir d'ensembles de fibres discontinues, ce métier à filer comprenant une pluralité de sections de filage (1, 2, ) auxquelles sont associées des buses d'air comprimé (9) respectives destinées à générer une torsion de filage. Un régulateur d'air comprimé commun comprenant un capteur de pression (12) et un dispositif de réglage (13) est monté en amont des sections de filage. Ce régulateur d'air comprimé est réglé sur une pression de référence qui correspond à la pression statique non régulée lorsque toutes les sections de filage sont en marche. En cas de variation de la pression statique, le régulateur d'air comprimé règle la pression de référence.

Claims (2)

  1. Métier à filer à buses d'air destiné à confectionner des fils filés (3) à partir d'assemblages de fibres discontinues (4), avec une pluralité de points de filage (1, 2 ...), auxquels sont respectivement associées des buses d'air comprimé (9) pour générer une torsion de filage, ainsi qu'avec un régulateur d'air comprimé commun placé en amont de ces points de filage (1, 2 ...) et comprenant un capteur de pression (12) et un dispositif de réglage (13) pour ajuster la pression statique (pS), caractérisé en ce que le régulateur d'air comprimé (12,13) peut être réglé sur une pression de référence (pR) correspondant à la pression statique non régulée (pU) quand tous les points de filage (1, 2 ...) sont en service, et qu'en cas de modification de la pression statique (pS), le régulateur d'air comprimé (12,13) peut ajuster la pression de référence (pR).
  2. Métier à filer à buses d'air selon la revendication 1, caractérisé en ce que la pression de référence (pR) sélectionnée est inférieure à la pression statique non régulée (pu) quand tous les points de filage (1, 2 ...) sont en service.
EP05799748A 2004-10-21 2005-10-18 Metier a filer a buses d'air Revoked EP1802792B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004052510A DE102004052510A1 (de) 2004-10-21 2004-10-21 Luftdüsenspinnmaschine
PCT/EP2005/011193 WO2006045492A1 (fr) 2004-10-21 2005-10-18 Metier a filer a buses d'air

Publications (2)

Publication Number Publication Date
EP1802792A1 EP1802792A1 (fr) 2007-07-04
EP1802792B1 true EP1802792B1 (fr) 2011-02-09

Family

ID=35539640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05799748A Revoked EP1802792B1 (fr) 2004-10-21 2005-10-18 Metier a filer a buses d'air

Country Status (6)

Country Link
US (1) US7628005B2 (fr)
EP (1) EP1802792B1 (fr)
JP (1) JP4500855B2 (fr)
CN (1) CN101044271B (fr)
DE (2) DE102004052510A1 (fr)
WO (1) WO2006045492A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7575939B2 (en) 2000-10-30 2009-08-18 Sru Biosystems, Inc. Optical detection of label-free biomolecular interactions using microreplicated plastic sensor elements
US7524625B2 (en) * 2000-10-30 2009-04-28 Sru Biosystems, Inc. Real time binding analysis of antigens on a biosensor surface
US7118710B2 (en) 2000-10-30 2006-10-10 Sru Biosystems, Inc. Label-free high-throughput optical technique for detecting biomolecular interactions
US7371562B2 (en) * 2000-10-30 2008-05-13 Sru Biosystems, Inc. Guided mode resonant filter biosensor using a linear grating surface structure
CN101180541A (zh) * 2005-04-12 2008-05-14 Sru生物系统公司 蛋白脂质膜和脂质膜生物传感器
US9134307B2 (en) 2007-07-11 2015-09-15 X-Body, Inc. Method for determining ion channel modulating properties of a test reagent
JP2009242972A (ja) * 2008-03-31 2009-10-22 Murata Mach Ltd 紡績装置
US8257936B2 (en) 2008-04-09 2012-09-04 X-Body Inc. High resolution label free analysis of cellular properties
ITPT20080014A1 (it) * 2008-11-27 2010-05-28 Giancarlo Bartolucci Dispositivo aspiratore/soffiatore ad aria compressa per distribuzione di fibre tessili su formazione di filati tubolari a rete
JP2012097391A (ja) * 2010-11-05 2012-05-24 Murata Mach Ltd 紡績機
DE102013101988A1 (de) * 2013-02-28 2014-08-28 Maschinenfabrik Rieter Ag Spinnstelle zur Herstellung eines Garns
CN106400225B (zh) * 2016-06-22 2018-09-21 陕西宝成航空仪表有限责任公司 用于喷气涡流纺纱机针长和锭子高度的检测装置
DE102019113977A1 (de) * 2019-05-24 2020-11-26 Saurer Spinning Solutions Gmbh & Co. Kg Verfahren zur Überwachung von erforderlichen Luftströmen zum Handhaben eines Fadens und/oder Faserbandes und Spinnmaschineneinheit

Family Cites Families (19)

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GB1135088A (en) 1966-03-24 1968-11-27 Vesesojuzny Nii Textilnogo I L Improvements in or relating to fibre collecting apparatus in break-spinning ringlessspinning or spindless spinning machines
US3926665A (en) * 1973-06-04 1975-12-16 Parks Cramer Ltd Method and apparatus for collecting fiber waste from open-end spinning machines
ATA170978A (de) * 1977-03-30 1990-09-15 Schlafhorst & Co W Verfahren und vorrichtung zum spinnen eines fadens aus einzelfasern
JPS6413374A (en) * 1987-07-08 1989-01-18 Murata Machinery Ltd Flow rate control of centralized blower system
DE3836481A1 (de) 1988-10-26 1990-05-03 Schubert & Salzer Maschinen Verfahren und vorrichtung zum einstellen einer luftspinnvorrichtung
JPH0619572Y2 (ja) * 1989-01-27 1994-05-25 村田機械株式会社 紡績装置
JPH03146726A (ja) * 1989-10-25 1991-06-21 Schubert & Salzer Mas Fab Ag 空気紡糸装置の調節方法及びこの調節を行うようになされた空気紡糸装置
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Also Published As

Publication number Publication date
JP4500855B2 (ja) 2010-07-14
US7628005B2 (en) 2009-12-08
CN101044271B (zh) 2010-06-23
DE502005010963D1 (de) 2011-03-24
CN101044271A (zh) 2007-09-26
US20080190090A1 (en) 2008-08-14
JP2008517180A (ja) 2008-05-22
WO2006045492A1 (fr) 2006-05-04
DE102004052510A1 (de) 2006-04-27
EP1802792A1 (fr) 2007-07-04

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