EP2565306B1 - Métier à tisser à rotor à extrémité ouverte - Google Patents

Métier à tisser à rotor à extrémité ouverte Download PDF

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Publication number
EP2565306B1
EP2565306B1 EP12005963.9A EP12005963A EP2565306B1 EP 2565306 B1 EP2565306 B1 EP 2565306B1 EP 12005963 A EP12005963 A EP 12005963A EP 2565306 B1 EP2565306 B1 EP 2565306B1
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EP
European Patent Office
Prior art keywords
open
spinning
workstations
spinning machine
rotor
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.)
Active
Application number
EP12005963.9A
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German (de)
English (en)
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EP2565306A3 (fr
EP2565306A2 (fr
Inventor
Kurt Martin Bäuerle
Tai Mac
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.)
Saurer Intelligent Technology AG
Original Assignee
Saurer Germany GmbH and Co KG
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Application filed by Saurer Germany GmbH and Co KG filed Critical Saurer Germany GmbH and Co KG
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Publication of EP2565306A3 publication Critical patent/EP2565306A3/fr
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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
    • D01H4/42—Control of driving or stopping
    • D01H4/44—Control of driving or stopping in rotor spinning

Definitions

  • the invention relates to an open-end rotor spinning machine comprising a plurality of jobs, each having a spinning rotor, drive means for variable-speed driving the spinning rotors, measuring means for detecting yarn breaks and evaluation means for determining a yarn breakage rate.
  • Open-end rotor spinning machines have a large number of jobs.
  • a fiber sliver provided in a sliver can is fed to a spinning device.
  • These spinning devices include a spinning rotor which rotates during the high-speed spinning process in a vacuum-pressurized rotor housing closed by a cover element. From the spinning device, a spun yarn is withdrawn by means of a take-off device and wound onto a cross-wound bobbin.
  • the utility model application DE 7148737 U discloses a drive motor which drives a common for all spinning rotors drive belt via a continuously variable transmission and the drive of the take-off roll of the take-off device via another continuously variable adjusting, which is adjustable for and with the adjusting gear for the rotor drive.
  • the adjusting drives can be adjusted by means of a handwheel at the end of the machine, so that an adjustment of the speeds of the spinning rotor and take-off roll is done centrally for the whole machine.
  • the EP 1 612 308 A2 discloses a spinning rotor which is acted upon by a single electric motor drive. With a Such a drive, the rotational speeds of the spinning rotors can be set individually at each spinning position.
  • the DE 7148737 U may be arranged at appropriate locations of the machine adjusting means, measuring instruments, display devices and switches. This includes a yarn breakage counter for each spinning position, which can be operated in a known manner by thread monitors.
  • the yarn break rate which can be accepted when operating an open-end rotor spinning machine, depends on the number of means available for thread breakage.
  • the yarn break rate is the number of yarn breaks based on the operating time of the open-end rotor spinning machine or a job.
  • the thread breakage is corrected by a piecing.
  • the piecing can be semiautomatic, that is, an operator is required for piecing.
  • the piecing can also be done automatically by means of a piecing carriage.
  • There are also known machines in which piecing is self-sufficient can be done automatically at a job.
  • the number of acceptable thread breaks depends on the number of available operators.
  • the permissible yarn breakage rate is determined by the number of piecing cars. When autarkic piecing at the workstations, it is important to know how many piecers can be performed in parallel, without affecting a sufficient vacuum supply. Due to the conditions described, a maximum permissible yarn breakage number can be specified.
  • the spinning speed and thus the productivity of the open-end rotor spinning machine increase with increasing rotor speed. Therefore, it is desirable that the spinning rotors be operated at the maximum possible speed.
  • the maximum rotor speed can not be determined analytically.
  • the rotor speed can only be determined experimentally by an operator, with the maximum speed always having to be redetermined as soon as one parameter changes, for example changing the yarn parameters or using a different rotor.
  • the execution of these experiments is complex and labor-intensive. Under certain circumstances, the production maximum is not reached.
  • the open-end rotor spinning machine comprises control means which are adapted to automatically set the rotational speed of the spinning rotors as a function of the respective determined yarn breakage rate and thereby to control the yarn breakage rate such that the yarn breakage rate is below a maximum yarn breakage rate in a predetermined nominal range.
  • the open-end rotor spinning machine for regulating the yarn break rate thus comprises a control loop, the yarn break rate acting as a control variable and the rotational speed of the spinning rotor as a manipulated variable.
  • the rotational speed of the spinning rotor can be set automatically without a maximum permissible yarn breakage rate being exceeded.
  • the operator only has to specify a nominal yarn break rate for the control loop.
  • the invention provides a simple way to optimally adjust the speed of the spinning rotor and thus to increase productivity.
  • control means are also designed to limit the speed of the spinning rotor so that a predetermined maximum speed is not exceeded and a predetermined minimum speed is not exceeded.
  • a predetermined maximum speed is not exceeded and a predetermined minimum speed is not exceeded.
  • other factors influencing the permissible speed can be taken into account.
  • the yarn quality specifies a permissible range. A maximum speed must not be exceeded for safety reasons.
  • control means comprise a comparison device, which is designed to determine the deviation of an actual yarn breakage rate from a desired yarn breakage rate. Furthermore, the control means comprise a controller which adjusts a rotational speed of the spinning rotor as a function of the deviation.
  • Workplaces of an open-end rotor spinning machine generally have a thread withdrawal device for removing a spun thread from the spinning rotor and a feed roller for feeding a sliver to the spinning rotor.
  • control means are adapted to control the thread withdrawal device so that the thread withdrawal speed is adjusted in dependence on the rotational speed of the spinning rotor so that predetermined yarn parameters are maintained.
  • control means may be designed to control the feed roller so that the rotational speed of the feed roller is adjusted in dependence on the rotational speed of the spinning rotor so that predetermined yarn parameters are maintained.
  • the evaluation means are adapted to determine the mean value of the yarn breakage rate of several jobs and the control means are adapted to adjust the rotational speed of the spinning rotors of the plurality of jobs so that the mean value of the yarn break rate is in the predetermined target range.
  • the multiple jobs include all jobs of the open-end rotor spinning machine. In this case, it is of secondary importance how the spinning rotor is driven. That is, it is not important for this type of regulation, whether the spinning rotors are driven centrally or the spinning rotor of a job through a Single drive is applied.
  • the multiple jobs include only a portion of the jobs of the open-end rotor spinning machine.
  • the regulation of the rotor speed can be better tuned to the available drive means and to yarns with different yarn parameters, which are spun in parallel on the rotor spinning machine. Therefore, according to a preferred embodiment, the plurality of work stations form a batch. This means that the averages are calculated on the basis of the jobs that spin yarns with the same parameter.
  • jobs are arranged on two sides of the open-end rotor spinning machine.
  • the multiple jobs can include all jobs on a page.
  • Such a solution is especially in question when the drive of the spinning rotors takes place centrally for one page. With the regulation of the average values for one side each, the restrictions of the central drive are considered.
  • different yarn parameters can be specified on both sides and each side can be operated at the maximum possible rotor speed.
  • the evaluation means are adapted to determine the yarn break rate of a single job and the drive means and the control means are adapted to control the yarn break rate of the individual job.
  • the control means In an individual control of the yarn break rate at each work not only the control means must be designed accordingly, but also the drive means.
  • each spinning rotor has a single drive. In such an education, every job optimally utilized and the spinning rotor are operated at its maximum speed. Different yarn parameters can be specified at each workstation. In addition, due to the unavoidable manufacturing tolerances of the spinning rotor and other components of the job, the resulting at each job maximum speeds may well be different.
  • Fig. 1 shows an open-end rotor spinning machine 1 with a plurality of jobs 2.
  • a workstation computer 10 which controls the handling devices of the workstation 2 and is connected via a bus system 11 to a central control unit 12.
  • Fig. 2 shows a side view of the open-end rotor spinning machine 1. Since the two sides of the machine 1 are constructed symmetrically, is in Fig. 2 only one side with the job 2 shown.
  • the workstation 2 is equipped with a spinning device 5 and a winding device 9.
  • the sliver 4 presented in sliver cans 3 is spun by means of a spinning rotor 21 into spun yarns 9, which are wound onto bobbins 8 on the winding devices 4.
  • a single drive 22 is provided in the present embodiment, which is arranged at each workstation.
  • An opening roller 15 prepares the sliver 4, which is the spinning device 5 is supplied.
  • a feed roller 14 is present.
  • the thread take-off device 16 pulls the finished spun strand 6 from the spinning device 5 from.
  • the work stations 2 each have a thread laying 18 which supplies the spun yarn 6 iridescent of the yarn package 8.
  • the winding means 9 are each provided with a creel 19 for rotatably holding a yarn package 8 and a winding roll 17 for rotating the yarn package 8.
  • a workstation's own suction nozzle 7 is present. This is pivotally mounted and is pivoted at a yarn break in the direction of the yarn package to detect the yarn end on the yarn package 8.
  • a measuring head 23 is arranged in the yarn path.
  • the measuring head 23 is part of a thread cleaner, which monitors the thread quality and optionally initiates the removal of faulty yarn locations.
  • the measuring head 23 also serves as a thread monitor. That is, by means of the measuring head 23 is monitored whether a thread is present or not. It is also possible to use a separate measuring head as thread monitor. In any case, can up this way an unwanted thread break can be detected.
  • the measuring head 23 is connected via the control line 27 to the workstation computer 10.
  • the workstation control 10 contains evaluation means 24.
  • the workstation control 10 comprises control means 25 for controlling the yarn breakage rate.
  • the control line 28 is provided.
  • the evaluation means 24 and the control means 25 may be part of the central control unit 12.
  • the signals of the measuring head 23 of a workstation 2 are then transmitted via the bus system 11 to the central control unit 12.
  • the speed specifications for the individual drive 22 of the spinning rotor 21 are provided via the bus system.
  • speed specifications are transmitted to a central drive of the spinning rotors 21 of several jobs.
  • An arrangement of the evaluation 24 and the control means 25 in the central control unit 12 is particularly advantageous if not the individual thread break rate is controlled at a job, but the average value of the yarn break rate over several jobs 2 of the open-end rotor spinning machine.
  • the control of averages can be used for the workstations of a lot, since yarns with the same yarn parameters are spun on the workstations of a lot.
  • the regulation of the mean value of the yarn breakage rate of the work sites of one side can be effected
  • the Fig. 3 shows a block diagram of a control loop according to the invention for controlling the yarn break rate F.
  • the control loop is a setpoint F soll , ie the target yarn break rate, given.
  • the actual value F ist is the yarn breakage rate, also called actual yarn breakage rate determined.
  • the actual yarn breakage rate F can be both an actual value of a workstation and an average of the actual values of several workstations.
  • the device 33 is formed by the measuring head 23 and the evaluation means 25.
  • the comparison device 34 determines the deviation ⁇ F of the actual yarn breakage rate F ist from the nominal yarn breakage rate F soll .
  • the deviation .DELTA.F is the input signal for the controller 30.
  • the controller 30 then provides a control signal, which is the speed N stell in the present case.
  • the speed N Stell can already be used as a speed specification for the individual drive 22 or for a central drive.
  • the controller 30, however, a limiter 32 is connected downstream. The limiter ensures that a specified maximum speed is not exceeded and that a specified minimum speed is not undershot. The specification of the maximum and the minimum speed can be carried out, for example, by the operator on an operating unit of the central control unit.
  • the limiter supplies the output signal N B.
  • the comparison device 34, the controller 30 and the limiter 32 are part of the control means 25.
  • the target yarn break rate F soll can be specified by the operator, for example by means of the control unit of the central control unit.
  • the output signal N B of the limiter is used as a speed specification or control signal for the route 31.
  • the route 31 is not formed solely by the single drive 22 or a central drive, but also by the respective jobs.
  • From the control signal N B or alternatively N Stell results in an actual yarn break rate F is .
  • a stable state is established after a settling time.
  • the speed setting is corrected automatically in case of disturbing influences.
  • the speed of the thread take-off device 16 and the rotational speed of the feed roller 14 can be adjusted as a function of the respective rotational speed of the spinning rotor 21.
  • the simplest type of adjustment represents a proportional change of the withdrawal and intake speed in relation to the rotational speed of the spinning rotor (21).

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

Claims (9)

  1. Machine à filer à bout libre (1) comprenant une multitude de postes de travail (2), chacun comportant un rotor de filage (21),
    des moyens d'entraînement (22) pour l'entraînement à vitesse variable des rotors de filage (21),
    des moyens de mesure (23) pour la détection des ruptures de fil,
    des moyens d'évaluation (24) pour la détermination d'un taux de rupture de fil, caractérisée en ce que
    la machine à filer à bout libre (1) comprend des dispositifs de commande (25), qui sont conçus pour régler automatiquement la vitesse de rotation des rotors de filage (21) en fonction du taux de rupture de fil déterminé et, ce faisant, pour réguler le taux de rupture de fil de telle sorte qu'il se situe dans une plage théorique prédéfinie au-dessous du taux de rupture de fil maximal, en ce que les dispositifs de commande (25) sont par ailleurs conçus pour limiter la vitesse de rotation du rotor de filage (21), afin de ne pas dépasser une vitesse maximale prédéfinie et de ne pas être en dessous d'une vitesse minimale prédéfinie, en ce que les dispositifs de commande (25) comprennent un dispositif de comparaison (34), lequel est conçu pour déterminer un écart (ΔF) entre un taux de rupture de fil réel (Fréel) et un taux de rupture de fil théorique (Fthéorique) et en ce que les dispositifs de commande (25) comprennent un régulateur, lequel règle une vitesse du rotor de filage (21) en fonction de l'écart (ΔF).
  2. Machine à filer à bout libre (1) selon l'une des revendications précédentes, caractérisée en ce que les postes de travail (2) comportent chacun un dispositif de dévidage de fil (16) pour le dévidage d'un fil filé (6) à partir du rotor de filage (21) et en ce que les dispositifs de commande (25) sont conçus pour piloter le dispositif de dévidage de fil (16) de telle sorte que la vitesse de dévidage soit adaptée en fonction de la vitesse du rotor de filage (21) afin de respecter les paramètres du fil.
  3. Machine à filer à bout libre (1) selon l'une des revendications précédentes, caractérisée en ce que les postes de de travail (2) comportent chacun un cylindre d'alimentation (14) pour l'amenée d'un ruban (4) au rotor de filage (21) et en ce que les dispositifs de commande (25) sont conçus pour piloter le cylindre d'alimentation (14) de telle sorte que la vitesse dudit cylindre soit adaptée en fonction de la vitesse du rotor de filage (21) afin de respecter les paramètres du fil.
  4. Machine à filer à bout libre (1) selon l'une des revendications précédentes, caractérisée en ce que les moyens d'évaluation (24) sont conçus pour déterminer la valeur moyenne du taux de rupture de fil de multiples postes de travail (2) et en ce que les moyens d'entraînement (22) et les dispositifs de commande (25) sont conçus pour régler la vitesse des rotors de filage de multiples postes de travail (2) de telle sorte que la valeur moyenne du taux de rupture de fil soit dans la plage théorique prédéfinie.
  5. Machine à filer à bout libre (1) selon la revendication 4, caractérisée en ce que les multiples postes de travail (2) comprennent tous les postes de travail de la machine à filer à bout libre (1).
  6. Machine à filer à bout libre (1) selon la revendication 4, caractérisée en ce que les multiples postes de travail (2) comprennent une partie seulement des postes de travail de la machine à filer à bout libre (1).
  7. Machine à filer à bout libre (1) selon la revendication 6, caractérisée en ce que les multiples postes de travail (2) constituent une partie.
  8. Machine à filer à bout libre (1) selon la revendication 6, caractérisée en ce que des postes de travail (2) sont agencés sur deux côtés de la machine à filer à bout libre (1) et que les multiples postes de travail (2) comprennent tous les postes de travail d'un côté.
  9. Machine à filer à bout libre (1) selon l'une des revendications 1 à 5, caractérisée en ce que les moyens d'évaluation (24) sont conçus pour déterminer le taux de rupture de fil d'un poste de travail individuel (2) et en ce que les moyens d'entraînement (22) et les dispositifs de commande (25) sont conçus pour réguler le taux de rupture de fil du poste de travail individuel (2).
EP12005963.9A 2011-09-02 2012-08-21 Métier à tisser à rotor à extrémité ouverte Active EP2565306B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011112364A DE102011112364A1 (de) 2011-09-02 2011-09-02 Offenend-Rotorspinnmaschine

Publications (3)

Publication Number Publication Date
EP2565306A2 EP2565306A2 (fr) 2013-03-06
EP2565306A3 EP2565306A3 (fr) 2015-03-04
EP2565306B1 true EP2565306B1 (fr) 2017-07-26

Family

ID=46796241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12005963.9A Active EP2565306B1 (fr) 2011-09-02 2012-08-21 Métier à tisser à rotor à extrémité ouverte

Country Status (3)

Country Link
EP (1) EP2565306B1 (fr)
CN (1) CN102978754B (fr)
DE (1) DE102011112364A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019116475A1 (de) * 2019-06-18 2020-12-24 Saurer Spinning Solutions Gmbh & Co. Kg Optimierung des Betriebes einer Spinnmaschine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017112080A1 (de) 2016-06-15 2017-12-21 Rieter Ingolstadt Gmbh Verfahren zum Optimieren der Produktion einer Rotorspinnmaschine
DE102016118708A1 (de) * 2016-10-04 2018-04-05 Saurer Germany Gmbh & Co. Kg Verfahren zum Betreiben einer Offenend-Rotorspinneinrichtung und Offenend-Rotorspinneinrichtung
JP7052683B2 (ja) * 2018-11-13 2022-04-12 株式会社豊田自動織機 紡機のスピンドル制御方法およびスピンドル制御装置
CZ2022522A3 (cs) 2022-12-12 2024-06-19 Rieter Cz S.R.O. Způsob řízení technologického procesu na dopřádacím stroji, dopřádací stroj k provádění způsobu, počítačový program k provádění způsobu na dopřádacím stroji a počítačem čitelné médium s počítačovým programem

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GB1143909A (en) 1966-07-18 1969-02-26 Louis Lepoutre & Cie Ets Servo device for controlling the speed of a spinning machine according to the thread breakage rate
DE7148737U (de) 1971-12-24 1972-04-13 W Stahlecker Gmbh Offen-End-Spinnmaschine
DE2336081A1 (de) 1973-02-20 1974-08-22 Heberlein Hispano Sa Verfahren und vorrichtung zur regelung von spinnmaschinen
DE2454721A1 (de) 1974-11-19 1976-05-26 Zinser Textilmaschinen Gmbh Verfahren und einrichtung zur beeinflussung der produktion einer textilmaschine
DE2140067B2 (de) 1970-08-10 1976-08-05 Parks-Cramer Co., Fitchburg, Mass. (V.St.A.) Verfahren zur produktionsverbesserung bei spinnmaschinen
DE3624212A1 (de) 1986-07-16 1988-01-28 Tsnii Promy Lubyanykh Volokon Verfahren und anordnung zur steuerung einer spinnmaschine
DE3819607A1 (de) 1987-08-17 1989-03-02 Zvl Vyzk Ustav Pro Valiva Spindel, insbesondere fuer eine feinspinnmaschine
DE3927684A1 (de) 1988-09-07 1990-03-15 Vyzk Ustav Bavlnarsky Faseraufloesevorrichtung fuer offenend-rotorspinneinheiten
EP0415290B1 (fr) 1989-08-30 1995-06-28 Maschinenfabrik Rieter Ag Procédé pour la commande de la vitesse de travail d'un métier à piler à anneaux
DE4442384C1 (de) 1994-11-29 1995-12-07 Wanger Gerhard Spindel zur aerostatischen Lagerung eines Offenend-Spinnrotors
DE102004053505A1 (de) 2004-11-02 2006-05-04 Wilhelm Stahlecker Gmbh Verfahren zum Optimieren der Produktionsleistung einer Spinnmaschine

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CS165836B1 (fr) * 1972-08-14 1975-12-22
DE3605829A1 (de) * 1986-02-22 1987-08-27 Fritz Stahlecker Verfahren zum steuern des garnabzugs beim anspinnen eines spinnaggregates einer oe-spinnmaschine
CN1005856B (zh) * 1986-09-03 1989-11-22 中央韧皮纤维工业科学研究所 控制纺纱机的方法及实施这一方法的装置
CH685125A5 (de) * 1991-11-08 1995-03-31 Rieter Ag Maschf Spinnereianlage mit einem Prozessleitrechner.
DE102004029020A1 (de) 2004-06-16 2005-12-29 Saurer Gmbh & Co. Kg Verfahren und Vorrichtung zum Betreiben einer Offenend-Rotorspinnvorrichtung
CN101328628B (zh) * 2007-06-19 2011-05-04 浙江日发纺织机械有限公司 高速半自动转杯纺纱机

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1143909A (en) 1966-07-18 1969-02-26 Louis Lepoutre & Cie Ets Servo device for controlling the speed of a spinning machine according to the thread breakage rate
DE2140067B2 (de) 1970-08-10 1976-08-05 Parks-Cramer Co., Fitchburg, Mass. (V.St.A.) Verfahren zur produktionsverbesserung bei spinnmaschinen
DE7148737U (de) 1971-12-24 1972-04-13 W Stahlecker Gmbh Offen-End-Spinnmaschine
DE2336081A1 (de) 1973-02-20 1974-08-22 Heberlein Hispano Sa Verfahren und vorrichtung zur regelung von spinnmaschinen
DE2454721A1 (de) 1974-11-19 1976-05-26 Zinser Textilmaschinen Gmbh Verfahren und einrichtung zur beeinflussung der produktion einer textilmaschine
DE3624212A1 (de) 1986-07-16 1988-01-28 Tsnii Promy Lubyanykh Volokon Verfahren und anordnung zur steuerung einer spinnmaschine
DE3819607A1 (de) 1987-08-17 1989-03-02 Zvl Vyzk Ustav Pro Valiva Spindel, insbesondere fuer eine feinspinnmaschine
DE3927684A1 (de) 1988-09-07 1990-03-15 Vyzk Ustav Bavlnarsky Faseraufloesevorrichtung fuer offenend-rotorspinneinheiten
EP0415290B1 (fr) 1989-08-30 1995-06-28 Maschinenfabrik Rieter Ag Procédé pour la commande de la vitesse de travail d'un métier à piler à anneaux
DE4442384C1 (de) 1994-11-29 1995-12-07 Wanger Gerhard Spindel zur aerostatischen Lagerung eines Offenend-Spinnrotors
DE102004053505A1 (de) 2004-11-02 2006-05-04 Wilhelm Stahlecker Gmbh Verfahren zum Optimieren der Produktionsleistung einer Spinnmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019116475A1 (de) * 2019-06-18 2020-12-24 Saurer Spinning Solutions Gmbh & Co. Kg Optimierung des Betriebes einer Spinnmaschine
EP3760772A1 (fr) 2019-06-18 2021-01-06 Saurer Spinning Solutions GmbH & Co. KG Optimisation du fonctionnement d'un métier à filer

Also Published As

Publication number Publication date
EP2565306A3 (fr) 2015-03-04
CN102978754B (zh) 2017-03-01
CN102978754A (zh) 2013-03-20
EP2565306A2 (fr) 2013-03-06
DE102011112364A1 (de) 2013-03-07

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