EP0365931B1 - Verfahren und Vorrichtung zum Einstellen einer Luftspinnvorrichtung - Google Patents

Verfahren und Vorrichtung zum Einstellen einer Luftspinnvorrichtung Download PDF

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Publication number
EP0365931B1
EP0365931B1 EP89118964A EP89118964A EP0365931B1 EP 0365931 B1 EP0365931 B1 EP 0365931B1 EP 89118964 A EP89118964 A EP 89118964A EP 89118964 A EP89118964 A EP 89118964A EP 0365931 B1 EP0365931 B1 EP 0365931B1
Authority
EP
European Patent Office
Prior art keywords
spinning
tension
delivery speed
air jet
injector nozzle
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
EP89118964A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0365931A1 (de
Inventor
Harald Dallmann
Peter Artzt
Gerhard Egbers
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Schubert und Salzer Maschinenfabrik 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 Schubert und Salzer Maschinenfabrik AG filed Critical Schubert und Salzer Maschinenfabrik AG
Publication of EP0365931A1 publication Critical patent/EP0365931A1/de
Application granted granted Critical
Publication of EP0365931B1 publication Critical patent/EP0365931B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the invention relates to a method for setting an air spinning device with an injector and a swirl nozzle, in which the injector nozzle pressure can be regulated, and an air spinning device with several spinning stations, in which each spinning station has an injector and a swirl nozzle, and a device by means of which the injector nozzle pressure can be regulated is, in particular to carry out the method.
  • an air spinning device is known from the subsequently published EP-A-289.010, in which a measuring device for detecting the yarn quality is arranged. If changes in the thread quality are detected, the measuring device influences the setting devices of the spinning station.
  • the optimization of the delivery speed is also not provided for in this teaching.
  • the object of the present invention is therefore to provide a method and a device with which the highest possible delivery speed, i.e. optimal productivity Yarn of a predetermined spinning tension is produced, the spinning tension being an indicator of the yarn quality.
  • the object is achieved in that the desired yarn quality is predetermined by a specific spinning tension of the thread and the highest possible delivery speed is adjusted according to this predetermined spinning tension by changing the injector nozzle pressure and / or spinning delay.
  • a measuring device for detecting the yarn quality is arranged between swirl nozzles and take-off rolls, which is connected to setting devices of at least this spinning station, on which it influences when the thread quality changes.
  • a predetermined range of the spinning tension is maintained in order to achieve a desired yarn quality with the highest possible delivery speed.
  • the delivery speed is increased, the spinning tension reaching a maximum value and then falling again.
  • the delivery speed is maintained and the injector nozzle pressure and / or the spinning delay are changed such that the spinning tension is again in the predetermined range.
  • the delivery speed is then increased again as long as the spinning tension can be adjusted in the predetermined range.
  • Spinning tension is understood to mean the thread tension which is determined in the running direction immediately before the pair of draw-off rollers during the production of the yarn.
  • Spinning delay is the delay in the spinning zone, i.e. between the drafting system outlet and the pair of take-off rolls. It is determined from the quotient of the take-off roller speed and the speed at the drafting system outlet and is less than 1.
  • the quality of the yarn is characterized by its strength, bending stiffness, hairiness, volume and deformability.
  • Knitting yarn or weaving yarn requires a certain yarn quality.
  • the corresponding yarn quality should be produced with optimal productivity, ie the highest possible delivery speed. However, this has limits, since the yarn strength drops when a certain high delivery speed is reached. The reason for this is that the rotation decreases and the spinning tension also decreases. Since the yarn strength is proportional to the spinning tension, it can be indicated by the spinning tension during the production of the thread. The spinning tension is therefore also a characteristic of the yarn quality, This drop in the spinning tension as the delivery speed increases is counteracted by reducing the injector nozzle pressure P I and / or by increasing the spinning delay. The decision as to which change, that of the injector nozzle pressure P I or of the spinning draft, should preferably be made depends on the fiber material to be spun and on the desired thread quality.
  • the spinning distortion v is increased first.
  • the injector nozzle pressure P I is preferably reduced first.
  • FIG. 1 schematically shows a diagram in which the spinning tension is plotted against the delivery speed V L.
  • Curves A, B and C represent the course of the spinning tension for a certain fiber material at the respective setting P IA , v A , P IB , v B , P IC , v C.
  • Curves A, B and C can be used for another Fiber material have other gradients and / or culmination points.
  • curves A, B and C from FIG. 1 are shown enlarged.
  • the curves A, B and C are to be interpreted in such a way that they indicate a range in which the spinning tension is during a specific delivery speed V L.
  • the target range of the spinning tension is indicated on the axis of the spinning tension. It varies depending on the desired yarn quality to be produced.
  • the target range for the production of weaving yarn is between 8 and 12 cN, while the range for the production of knitting yarn ranges from 4 to 8 cN.
  • the individual areas can of course be further restricted so that a yarn with less quality variation is created.
  • the range between 8 and 10 cN for warp yarn and the range between 10 and 12 cN for weft yarn will be more suitable.
  • Curves A and B show a section of curves A and B from FIG. 1 from the culmination point.
  • curve A falls in the desired spinning tension range until it reaches the minimum desired spinning tension. This happens at the delivery speed V L1 .
  • the parameters injector nozzle pressure P IA and / or spinning delay v A are now changed to the values P IB and v B , a jump into curve B is achieved, the maximum desired spinning tension being slightly exceeded.
  • the spinning tension drops again in the desired spinning tension range. It was therefore possible to increase the delivery speed V L from V L1 to V L2 , the yarn produced being of the same quality as the lower delivery speed.
  • the spinnerets 3 show an air spinning station 1 with high draft rollers 2 of a known and therefore not shown drafting system, a system of spinnerets 3 and take-off rollers 4.
  • the spinnerets 3 consist of an injector nozzle 31 and a swirl nozzle 32 applied a rotation, the swirl effect of the injector 31 counteracts that of the swirl nozzle 32.
  • a nozzle pressure P D is present at the swirl nozzle 32, which is greater than an injector nozzle pressure P I at the injector nozzle 31.
  • the swirl nozzle pressure P D is set constant in order to achieve optimal spinning conditions.
  • the injector nozzle pressure P I is variably adjustable via a valve 33.
  • the valve 33 is adjustable via a pressure adjusting device 34.
  • An increase or decrease in the injector nozzle pressure P I via the valve 33 and with the aid of the pressure adjusting device 34 causes a change in the spinning tension.
  • the spinning tension is recorded via the spinning tension sensor 5.
  • the spinning tension sensor 5 is arranged between the swirl nozzle 32 and the take-off rollers 4. This makes it possible to measure the spinning tension of the thread F just produced.
  • the sensor 5 transmits its signal to a display device 6.
  • This analog or digital indicating device gives an indication of whether the spinning tension of the thread currently being produced is within the previously defined tolerance range. It is advantageous if an indication of the desired spinning tension range is given on the display device 6, which can also be adjusted depending on the desired spinning tension.
  • the display device 6 clearly shows whether the spinning tension is in the predetermined target range.
  • the applied spinning voltage is displayed via a diode bar, in which each diode corresponds to a spinning voltage range assigned to it.
  • a diode bar By overlaying the diode bar with a mask that indicates the target range of the spinning tension and the deviation upwards (+) or downwards (-), an operator can quickly see whether spinning in the desired spinning tension range.
  • display via a pointer instrument would also be possible, in which the target range of the spinning tension is also identified with a mask superimposed on the pointer instrument. If the mask is arranged movably on the display device 6, it is possible for the operator in a simple manner to set the mask to the new target value when the thread quality to be produced, which is also associated with a change in the target range of the spinning tension, is changed.
  • the display device 6 indicates that the spinning tension is outside the target range, there is the possibility on the one hand of moving the spinning tension back into the target range via the pressure adjusting device 34 and the valve 33.
  • Another possibility of bringing the spinning tension back into its desired range is to change the spinning delay using an adjusting device 42.
  • the adjusting device 42 acts on the drive of the take-off rollers 4 and / or of the drafting unit 2 and changes their speed. For example, if the speed of the take-off rolls 4 increases, the spinning delay also changes. The prerequisite for this is, of course, that the other parameters, such as delivery speed V L and injector nozzle pressure P I, do not in turn counteract the change in spinning delay.
  • An adjusting device 21 is responsible for changing the delivery speed V L. With it, it is possible to increase the delivery speed V L and thus to achieve the highest possible delivery speed V L to achieve a certain yarn quality.
  • the adjusting device 21 acts on the drive of the drafting system and influences the speed of the high drafting rollers 2.
  • the setting devices 21, 34 and 42 act not only on the spinning station 1 at which the spinning tension sensor 5 is installed, but also on other spinning stations at which the same fiber material is spun and at which the same spinning conditions prevail the spinning station 1. It is assumed here that the deviations of the individual spinning stations from one another are not essential, so that it is sufficient to measure the spinning tension at only one spinning station. If the target spinning tension range to be set is restricted compared to the maximum target range, yarns of the required quality are also produced at spinning positions whose spinning tension is not measured, since possible deviations from the restricted target range are still in the maximum target range.
  • spinning tension sensors 5 are also installed at the other spinning stations, and their display devices 6 can be arranged at a central point, then very precise monitoring of all spinning stations is made possible. If the setting devices 21, 34 and 42 continue to act jointly on a plurality of spinning stations 1, it is possible to select the settings for injector nozzle pressure P I , delivery speed V L and tensioning delay v such that all spinning stations have a spinning tension in the desired range.
  • This embodiment ensures the individual setting of each spinning station 1 to the optimal spinning tension range for the desired yarn quality with the highest possible delivery speed V L.
  • the deviation of the required spinning tension at a spinning station 1 can be detected immediately and corrected independently of the other spinning stations 1, whose spinning tension is still in the required range.
  • FIG. 4 shows a spinning device 1 in which sensors 22, 35 and 41 are arranged on the high drafting rollers 2, on the valve 33 and on the takeoff rollers 4.
  • the actual state of the delivery speed V L , the injector nozzle pressure P I and the spinning delay v is passed to a regulating and control unit 7 via these sensors 22, 35 and 41.
  • the regulating and control unit 7 also evaluates the actual state of the spinning tension, which it receives via the spinning tension sensor 5. A comparison of this spinning tension with the previously set target spinning tension enables the regulating and control unit 7 to influence the delivery speed V L , the injector nozzle pressure P I and / or the tensioning delay v.
  • the regulating and control unit can decide which parameters should preferably be adjusted to increase productivity, ie to the highest possible delivery speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP89118964A 1988-10-26 1989-10-12 Verfahren und Vorrichtung zum Einstellen einer Luftspinnvorrichtung Expired - Lifetime EP0365931B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3836481 1988-10-26
DE3836481A DE3836481A1 (de) 1988-10-26 1988-10-26 Verfahren und vorrichtung zum einstellen einer luftspinnvorrichtung

Publications (2)

Publication Number Publication Date
EP0365931A1 EP0365931A1 (de) 1990-05-02
EP0365931B1 true EP0365931B1 (de) 1993-05-19

Family

ID=6365964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89118964A Expired - Lifetime EP0365931B1 (de) 1988-10-26 1989-10-12 Verfahren und Vorrichtung zum Einstellen einer Luftspinnvorrichtung

Country Status (4)

Country Link
US (1) US5048281A (enrdf_load_stackoverflow)
EP (1) EP0365931B1 (enrdf_load_stackoverflow)
BR (1) BR8905466A (enrdf_load_stackoverflow)
DE (2) DE3836481A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7628005B2 (en) 2004-10-21 2009-12-08 Maschinenfabrik Rieter Ag Air jet spinning machine

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4009878C2 (de) * 1990-03-28 2001-01-04 Schlafhorst & Co W Luftsteuereinrichtung einer Spinnmaschine
GB9202397D0 (en) * 1992-02-05 1992-03-18 British Tech Group Texturing yarn
US5420802A (en) * 1992-09-24 1995-05-30 Lawson-Hemphill, Inc. System and method for testing yarn altering devices
GB9315638D0 (en) * 1993-07-28 1993-09-08 Univ Manchester False twist texturing
US5901544A (en) * 1994-08-26 1999-05-11 Caress Yarns, Inc. Method and apparatus for producing randomly variegated multiple strand twisted yarn and yarn and fabric made by said method
US5619849A (en) * 1994-08-26 1997-04-15 Caress Yarns, Inc. Method and apparatus for producing randomly variegated multiple strand yarn in twisting together at least two yarns and yarn and fabric made by said method
US5673549A (en) * 1994-08-26 1997-10-07 Caress Yarns, Inc. Method and apparatus for producing randomly variegated multiple strand twisted yarn and yarn and fabric made by said method
FI99214C (fi) * 1995-11-17 1997-10-27 Maillefer Nokia Holding Menetelmä ja sovitelma optisen kuidun tensiovaihtelun tasaamiseksi
ES2114468B1 (es) * 1995-11-24 1999-01-16 Univ Catalunya Politecnica Procedimiento y dispositivo de ajuste de la torsion del hilado en una tobera vortex de hilatura.
WO1999018271A1 (en) * 1997-10-02 1999-04-15 Milliken Research Corporation Method and apparatus to provide an overall net zero twist in yarn
US7100246B1 (en) 1999-06-14 2006-09-05 E. I. Du Pont De Nemours And Company Stretch break method and product
US7083853B2 (en) * 1999-06-14 2006-08-01 E. I. Du Pont De Nemours And Company Stretch break method and product
EP1205588B1 (de) * 2000-11-08 2004-12-15 Maschinenfabrik Rieter Ag Steuerung von Spinnstellen in einer Spinnmaschine
US20060204753A1 (en) * 2001-11-21 2006-09-14 Glen Simmonds Stretch Break Method and Product
JP2003166132A (ja) * 2001-11-28 2003-06-13 Murata Mach Ltd 紡績装置及び紡績方法
RU2207413C1 (ru) * 2001-12-03 2003-06-27 ООО "ТМЗ" Текстильные машины и запчасти Способ получения пряжи знакопеременной крутки
CN100352982C (zh) * 2002-01-18 2007-12-05 里特机械公司 纺纱机
WO2005085504A1 (en) * 2004-02-27 2005-09-15 E.I. Dupont De Nemours And Company Spun yarn, and method and apparatus for the manufacture thereof
US7299615B2 (en) * 2004-06-18 2007-11-27 Mannington Mills, Inc. Variable twist level yarn using fluid twisting
DE102004053505A1 (de) * 2004-11-02 2006-05-04 Wilhelm Stahlecker Gmbh Verfahren zum Optimieren der Produktionsleistung einer Spinnmaschine
WO2006097008A1 (de) * 2005-03-16 2006-09-21 Maschinenfabrik Rieter Ag Luftspinnmaschine mit überwachung des spinnprozesses mit sensoren
DE102011053396B3 (de) 2011-09-08 2012-08-23 Terrot Gmbh Vorrichtung und Verfahren zur Herstellung von Maschenware
EP3260584B1 (de) * 2016-06-15 2021-10-27 Rieter Ingolstadt GmbH Verfahren zum optimieren der produktion einer rotorspinnmaschine
DE102019116475A1 (de) * 2019-06-18 2020-12-24 Saurer Spinning Solutions Gmbh & Co. Kg Optimierung des Betriebes einer Spinnmaschine

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DE2126196A1 (enrdf_load_stackoverflow) * 1971-05-26 1972-09-21
JPS52107349A (en) * 1976-03-04 1977-09-08 Murata Machinery Ltd Spun yarn and method of producing same
DE2933782A1 (de) * 1979-08-21 1981-03-26 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Verfahren zum kontinuierlichen regeln des kraeuselgrades thermoplastischer multifiler faeden
JPS5940926B2 (ja) * 1980-06-26 1984-10-03 村田機械株式会社 糸状物体のバル−ン評価方法
DE3502118A1 (de) * 1985-01-23 1986-07-24 W. Schlafhorst & Co, 4050 Mönchengladbach Vorrichtung zum beseitigen von faserrueckstaenden an den perforierten friktionsflaechen einer oe-friktionsspinnmaschine
JPS6215331A (ja) * 1985-06-27 1987-01-23 Murata Mach Ltd 空気式紡績機
DE3541219A1 (de) * 1985-11-21 1987-05-27 Schubert & Salzer Maschinen Verfahren und vorrichtung zum verspinnen von fasern
IN171021B (enrdf_load_stackoverflow) * 1987-04-27 1992-07-04 Rieter Ag Maschf

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7628005B2 (en) 2004-10-21 2009-12-08 Maschinenfabrik Rieter Ag Air jet spinning machine

Also Published As

Publication number Publication date
DE3836481A1 (de) 1990-05-03
DE3836481C2 (enrdf_load_stackoverflow) 1993-08-19
BR8905466A (pt) 1990-05-29
EP0365931A1 (de) 1990-05-02
DE58904419D1 (de) 1993-06-24
US5048281A (en) 1991-09-17

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