EP3305952B1 - Procédé de fonctionnement d'un dispositif de filature à rotor à bout libre et dispositif de filature à rotor à bout libre - Google Patents

Procédé de fonctionnement d'un dispositif de filature à rotor à bout libre et dispositif de filature à rotor à bout libre Download PDF

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Publication number
EP3305952B1
EP3305952B1 EP17193738.6A EP17193738A EP3305952B1 EP 3305952 B1 EP3305952 B1 EP 3305952B1 EP 17193738 A EP17193738 A EP 17193738A EP 3305952 B1 EP3305952 B1 EP 3305952B1
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EP
European Patent Office
Prior art keywords
spinning
rotor
rotational speed
spinning rotor
specified
Prior art date
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Active
Application number
EP17193738.6A
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German (de)
English (en)
Other versions
EP3305952A1 (fr
Inventor
Niklas Veltmann
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 Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Spinning Solutions GmbH and Co KG
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Application filed by Saurer Spinning Solutions GmbH and Co KG filed Critical Saurer Spinning Solutions GmbH and Co KG
Publication of EP3305952A1 publication Critical patent/EP3305952A1/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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/32—Counting, measuring, recording or registering devices
    • 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
    • D01H4/04—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 contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/10—Rotors

Definitions

  • the present invention relates to a method for operating an open-end rotor spinning device with a replaceable, single-motor driven spinning rotor and an open-end rotor spinning device with an exchangeable spinning rotor and a single-motor drive for driving the spinning rotor.
  • a spinning rotor rotates at high speed for spinning a thread.
  • different spinning rotors are required.
  • the spinning rotor is a wearing part.
  • the spinning rotors are usually interchangeable.
  • the spinning rotors differ mainly in their diameter and shape. The diameter and shape influence the permissible speed. Smaller rotors can be operated at higher speeds. A large spinning rotor requires lower speeds because the higher centrifugal forces can otherwise lead to damage. The rotor diameter also influences the possible yarn count.
  • the DE 101 17 095 A1 discloses to provide the spinning rotor and other interchangeable machine components of spinning machines with an identification label. If the identification marking is arranged accordingly, it can be automatically recorded so that the configuration of a spinning station can be called up automatically. The information from the recorded information markings can be transmitted to a control, for example to carry out a data check to determine whether the set desired type of yarn is compatible with the type of interchangeable machine component installed at each spinning station.
  • the automatic configuration recording at every spinning station is incorporated into quality assurance. In addition, operational and operational safety can be increased.
  • the DE 44 04 243 B4 relates to a method for operating an open-end rotor spinning device with single-motor electric drive of the spinning rotor, the operating phases of the spinning rotor, which are different with respect to the speed, being regulated according to predefinable functions.
  • the electrical energy supplied to the drive becomes continuous is recorded and the actual value profile of a variable representing the energy supply is continuously compared with the setpoint profile assigned to the respective operating phase.
  • the acquisition is carried out both during startup and during normal spinning. This is intended to detect faults caused by contamination in the bearing area of the spinning rotor. It is mentioned that, in principle, the speed of the spinning rotor can also be monitored to detect such faults. However, the deviations in the speed are significantly smaller than in the energy supply.
  • the US2009 / 0049819A1 discloses individual rotor drives for an open-end rotor spinning machine with a communication interface for the alternative control of the individual rotor drives.
  • a speed or a speed profile can be specified via this interface for checking purposes.
  • the DE 102 06 762 A1 discloses an open-end rotor spinning machine with support disk bearings for the spinning rotors.
  • the support disk bearings can have a speed detection device. The gradient of the speed change is determined between two times and compared with limit values. This should indicate wear on the drive belt or incorrect assembly.
  • the JP H09 195131 A shows an open-end rotor spinning machine with centrally driven spinning rotors, the speed of which is recorded.
  • the object is achieved by a method for operating an open-end rotor spinning device with an exchangeable, single-motor driven spinning rotor.
  • the spinning rotor is accelerated with a predetermined power from a first speed to a predetermined second speed and the acceleration time required for the acceleration from the first speed to the second speed is recorded and evaluated as an evaluation variable.
  • the spinning rotor with a predetermined power from a first speed for a The specified acceleration time is accelerated and the second speed reached during this time is recorded and evaluated as an evaluation variable.
  • the invention is based on the knowledge that the acceleration depends on the diameter of the spinning rotor.
  • a small spinning rotor accelerates faster than a large spinning rotor due to its lower mass inertia.
  • the diameter is a characteristic feature of the spinning rotor.
  • An inserted spinning rotor can thus be identified on the basis of the evaluation size. Operational safety is increased because an incorrectly inserted rotor can be identified.
  • the invention thus makes it easy to identify a rotor that does not match the set spinning and yarn parameters; in particular, it can be prevented that a rotor is not operated at excessive speeds.
  • the first speed can be zero or a non-zero speed.
  • a non-zero speed is an advantage. Static friction effects that would have to be overcome when starting up from standstill and that would influence the acceleration time can thus be avoided.
  • the first speed is preferably lower than the second speed. That means the acceleration is positive.
  • the first speed in order to obtain a diameter-dependent acceleration time, can also be greater than the second speed. The acceleration would then be negative.
  • the first speed and the second speed should be less than a limit speed. This limit speed results from the permissible speed of the spinning rotor with the largest diameter, which can be mounted in the open-end rotor spinning device.
  • a reference value of the evaluation size is determined for at least one spinning rotor with a predetermined diameter.
  • the detected evaluation size is compared with the reference value of the evaluation size of the at least one spinning rotor with the specified diameter.
  • the permissible speed of the spinning rotor is limited as a function of the detected evaluation size. This means that it is ensured that an inserted spinning rotor is only operated at speeds that do not lead to any damage.
  • This can be a reference value of the evaluation size be assigned a limit speed.
  • the reference value of the evaluation size corresponds to a predetermined diameter of the spinning rotor. All spinning rotors that have a larger diameter are not operated at a speed that is greater than the limit speed.
  • the at least one spinning rotor with the predefined diameter represents a predefined spinning rotor. If there is a predefined deviation of the detected evaluation size from the reference value of the evaluation size, an indication is given.
  • the reference value of the evaluation size thus makes it easy to determine whether or not a spinning rotor with the predetermined diameter is arranged in the open-end rotor spinning device.
  • the display can take the form of a simple warning, for example a yellow or red lamp at the spinning position, or a text message on a display. In addition to the displays, the spinning station can also be shut down.
  • the present invention also relates to an open-end rotor spinning device.
  • the open-end rotor spinning device comprises a control device which controls the drive of the spinning rotor in such a way that the spinning rotor is accelerated from a first speed to a second speed with a predetermined power, and which required the acceleration from the first speed to the second speed Acceleration time is recorded and evaluated as an evaluation variable, or that the spinning rotor is accelerated with a predetermined power from a first speed for a predetermined acceleration time and the second speed reached during this time is recorded and evaluated as an evaluation variable.
  • the control device comprises a memory in which a reference value of the evaluation size of at least one spinning rotor with a predetermined diameter is stored. The control device is also designed to compare the detected evaluation variable with the reference value of the evaluation variable of the at least one spinning rotor with the predetermined diameter.
  • the open-end rotor spinning device according to the invention can be easily implemented.
  • Known open-end rotor spinning devices with a single-motor drive usually already have a control device with a memory.
  • the invention Training can be easily implemented through software adaptation and storage of the required reference values.
  • the speed and time recording required for the invention are usually already available. Additional devices such as markers or sensors are not required.
  • the control device is designed to limit the permissible speed of the spinning rotor as a function of the detected evaluation size.
  • the control unit ensures that a limit speed is not exceeded.
  • the limit speed depends on the detected evaluation size and thus on the diameter of the spinning rotor.
  • the limitation of the speed serves only for operational safety. Otherwise, yarn and spinning parameters can be freely selected.
  • the at least one spinning rotor with the predefined diameter preferably represents a predefined spinning rotor and the control device is designed to generate a display in the event of a predefined deviation of the detected evaluation size from the reference value of the evaluation size. If necessary, existing display means can be used or adapted to generate the display.
  • the Fig. 1 shows an open-end rotor spinning device 1.
  • the structure of an open-end rotor spinning machine is basically known in the prior art, so that the known details are not dealt with here.
  • the present open-end spinning device differs only in certain functionalities from the known open-end spinning devices, which will be explained later. In Fig. 1 therefore only the rough principle is shown.
  • the spinning rotor 2 is exchangeably connected to the rotor shaft 6 by a coupling device 5.
  • the rotor shaft 6 forms the rotor of an electric individual drive 3.
  • the drive 3 is controlled by the control device 4.
  • different spinning rotors 2 are inserted into the open-end rotor spinning device 1.
  • the 2 and 3 show the speed n of two different spinning rotors A and B used in the open-end spinning device over time t.
  • the spinning rotor is accelerated from speed n 1 to speed n 2 .
  • the conditions under which the acceleration process takes place are identical, in particular the drive is operated and acted on with the same power; the spinning rotors A and B each with the same drive torque.
  • the spinning rotor B has a larger diameter than the spinning rotor A.
  • the acceleration time t B of the spinning rotor B is thus greater than the acceleration time t A of the spinning rotor A.
  • the larger diameter results in a higher inertia and thus a longer acceleration time.
  • the acceleration time t A , t B is the time required to accelerate the spinning rotor A, B from the speed n 1 to the speed n 2 .
  • the control device 4 can automatically initiate an acceleration process from the speed n 1 to the speed n 2 and thereby determine the acceleration time.
  • the speed n 1 and the acceleration time t A , t B can also be specified.
  • the speed n 2 is determined, which is reached after the predetermined acceleration time.
  • the control device can, for example, monitor the opening of the box lid. Since the proper closing of the box lid has to be monitored anyway for safety reasons, an appropriate sensor system is usually available anyway.
  • the control device 4 has a memory by storing the reference values of the acceleration time t A , t B or the speed n 2 for the spinning rotors used.
  • the measured acceleration time is compared by the control device with the reference values of the acceleration time t A , t B or the speed n 2 . This can be used to check whether the appropriate spinning rotor has also been inserted. In the event of deviations, the operator is informed accordingly.
  • the present invention further enables a protective function. This means that a limit speed is defined as a function of the diameter determined via the acceleration time or the speed n 2 .
  • the control device 4 ensures that the limit speed is not exceeded, regardless of an operating speed set by the operator.

Landscapes

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

Claims (4)

  1. Procédé pour l'exploitation d'un métier à filer à rotor à fibres libérées (1) avec un rotor de filage (2) remplaçable entraîné par un seul moteur,
    sachant que le rotor de filage (2) est accéléré avec une puissance prédéfinie d'une première vitesse de rotation (n1) à une deuxième vitesse de rotation prédéfinie (n2) et que le temps d'accélération (tA, tB) requis pour l'accélération de la première vitesse de rotation (n1) à la deuxième vitesse de rotation (n2) est saisi et évalué en tant que grandeur d'évaluation ou que le rotor de filage (2) est accéléré avec une puissance prédéfinie d'une première vitesse de rotation (n1) pendant un temps d'accélération prédéfini (tA, tB) et que la deuxième vitesse de rotation (n2) atteinte au cours de ce temps est saisie et évaluée en tant que grandeur d'évaluation, sachant que pour le rotor de filage (2), au moins un, avec un diamètre prédéfini, une valeur de référence de la grandeur d'évaluation est déterminée,
    sachant que la grandeur d'évaluation saisie est comparée à la valeur de référence de la grandeur d'évaluation du rotor de filage (2), au moins un, avec le diamètre prédéfini,
    caractérisé en ce que
    la première vitesse de rotation (n1) et la deuxième vitesse de rotation (n2) sont inférieures à une vitesse de rotation limite qui résulte de la vitesse de rotation autorisée du rotor de filage avec le plus grand diamètre qui peut être monté dans le métier à filer à rotor à fibres libérées (1) et
    que la vitesse de rotation (n) autorisée du rotor de filage (2) est limitée en fonction de la grandeur d'évaluation saisie.
  2. Procédé selon la revendication 1 caractérisé en ce que le rotor de filage (2), au moins un, avec le diamètre prédéfini représente un rotor de filage prédéfini (2) et qu'un affichage intervient lors d'un écart prédéfini de la grandeur d'évaluation saisie par rapport à la valeur de référence de la grandeur d'évaluation.
  3. Métier à filer à rotor à fibres libérées (1) avec un rotor de filage remplaçable (2) et un entraînement à un seul moteur (3) destiné à l'entraînement du rotor de filage (2), sachant qu'un dispositif de commande (4) est disponible et qu'il commande l'entraînement (3) de telle sorte que le rotor de filage (2) est accéléré avec une puissance prédéfinie d'une première vitesse de rotation (n1) à une deuxième vitesse de rotation (n2) et que le temps d'accélération (tA, tB) requis pour l'accélération de la première vitesse de rotation (n1) à la deuxième vitesse de rotation (n2) est saisi et évalué en tant que grandeur d'évaluation ou que le rotor de filage (2) est accéléré avec une puissance prédéfinie à partir d'une première vitesse de rotation (n1) pendant un temps d'accélération prédéfini (tA, tB) et que la deuxième vitesse de rotation (n2) atteinte au cours de ce temps est saisie et évaluée en tant que grandeur d'évaluation,
    sachant que le dispositif de commande (4) renferme une mémoire de sorte qu'une valeur de référence de la grandeur d'évaluation du rotor de filage (2), au moins un, avec un diamètre prédéfini est enregistrée,
    sachant que le dispositif de commande (4) est conçu de telle sorte que la grandeur d'évaluation saisie est comparée à la valeur de référence de la grandeur d'évaluation du rotor de filage (2), au moins un, avec le diamètre prédéfini, caractérisé en ce que
    la première vitesse de rotation (n1) et la deuxième vitesse de rotation (n2) sont inférieures à une vitesse de rotation limite qui résulte de la vitesse de rotation autorisée du rotor de filage avec le plus grand diamètre qui peut être monté dans un métier à tisser à rotor à fibres libérées (1) et
    que le dispositif de commande (4) est conçu de telle sorte que la vitesse de rotation (n) autorisée du rotor de filage (2) est limitée en fonction de la grandeur d'évaluation saisie.
  4. Métier à filer à rotor à fibres libérées (1) selon la revendication 3, caractérisé en ce que le rotor de filage (2), au moins un, avec le diamètre prédéfini représente un rotor de filage (2) prédéfini et que le dispositif de commande (4) est conçu de telle sorte qu'un affichage est généré lors d'un écart prédéfini de la grandeur d'évaluation saisie par rapport à la valeur de référence de la grandeur d'évaluation.
EP17193738.6A 2016-10-04 2017-09-28 Procédé de fonctionnement d'un dispositif de filature à rotor à bout libre et dispositif de filature à rotor à bout libre Active EP3305952B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016118708.9A DE102016118708A1 (de) 2016-10-04 2016-10-04 Verfahren zum Betreiben einer Offenend-Rotorspinneinrichtung und Offenend-Rotorspinneinrichtung

Publications (2)

Publication Number Publication Date
EP3305952A1 EP3305952A1 (fr) 2018-04-11
EP3305952B1 true EP3305952B1 (fr) 2020-07-29

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Application Number Title Priority Date Filing Date
EP17193738.6A Active EP3305952B1 (fr) 2016-10-04 2017-09-28 Procédé de fonctionnement d'un dispositif de filature à rotor à bout libre et dispositif de filature à rotor à bout libre

Country Status (3)

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EP (1) EP3305952B1 (fr)
CN (1) CN107893270B (fr)
DE (1) DE102016118708A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019112735A1 (de) * 2019-05-15 2020-11-19 Maschinenfabrik Rieter Ag Verfahren zur Identifikation eines Spinnrotors an einer Rotorspinnmaschine sowie Rotorspinnmaschine
DE102019116475A1 (de) * 2019-06-18 2020-12-24 Saurer Spinning Solutions Gmbh & Co. Kg Optimierung des Betriebes einer Spinnmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55128026A (en) * 1979-03-22 1980-10-03 Toyoda Autom Loom Works Ltd Starting method of open-end fine spinning frame and device therefor
JPS58163732A (ja) * 1982-03-20 1983-09-28 Toyoda Autom Loom Works Ltd オ−プンエンド精紡機のロ−タ
DE4404243B4 (de) 1994-02-10 2005-08-25 Saurer Gmbh & Co. Kg Verfahren und Einrichtung zum Betreiben einer Offenend-Rotorspinneinheit mit einzelmotorischem elektrischem Antrieb des Spinnrotors
JPH09195131A (ja) * 1996-01-12 1997-07-29 Toyota Autom Loom Works Ltd オープンエンド精紡機の糸継ぎ時の始紡制御方法及び糸継ぎ装置
DE10117095A1 (de) 2001-04-06 2002-10-10 Rieter Ingolstadt Spinnerei Austauschbare Maschinenkomponente einer Spinnereimaschine mit einer Identifikationskennzeichnung und System zur Qualitätssicherung
DE10206762A1 (de) * 2002-02-19 2003-08-28 Rieter Ingolstadt Spinnerei Stützscheibenlager mit einer Drehzahlerfassungseinrichtung und drehzahlabhängiges Steuerverfahren
DE102004029048A1 (de) * 2004-06-14 2005-12-29 Wilhelm Stahlecker Gmbh Verfahren an einer Offenend-Rotorspinnmaschine zum halb-automatischen Anspinnen
DE102007040216B4 (de) * 2007-08-25 2018-05-30 Saurer Germany Gmbh & Co. Kg System zur Ansteuerung eines Rotorantriebes einer Offenend-Rotorspinnmaschine
DE102011112364A1 (de) * 2011-09-02 2013-03-07 Oerlikon Textile Gmbh & Co. Kg Offenend-Rotorspinnmaschine
DE102017112080A1 (de) * 2016-06-15 2017-12-21 Rieter Ingolstadt Gmbh Verfahren zum Optimieren der Produktion einer Rotorspinnmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN107893270A (zh) 2018-04-10
CN107893270B (zh) 2020-12-01
EP3305952A1 (fr) 2018-04-11
DE102016118708A1 (de) 2018-04-05

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