EP1684403B1 - Méthode et dispositif pour déterminer la position zéro d'un guide-fil traversant - Google Patents

Méthode et dispositif pour déterminer la position zéro d'un guide-fil traversant Download PDF

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Publication number
EP1684403B1
EP1684403B1 EP05027304A EP05027304A EP1684403B1 EP 1684403 B1 EP1684403 B1 EP 1684403B1 EP 05027304 A EP05027304 A EP 05027304A EP 05027304 A EP05027304 A EP 05027304A EP 1684403 B1 EP1684403 B1 EP 1684403B1
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EP
European Patent Office
Prior art keywords
stepping motor
rotor
thread guide
poles
rest position
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
EP05027304A
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German (de)
English (en)
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EP1684403A1 (fr
Inventor
Erwin Peters
Maximilian Preutenborbeck
Wilhelm Oehrl
Gudrun Doss
Günter Scheer
Robert Geisler
Dirk Schiffers
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
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Oerlikon Textile GmbH and Co KG
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Publication of EP1684403A1 publication Critical patent/EP1684403A1/fr
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Publication of EP1684403B1 publication Critical patent/EP1684403B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2821—Traversing devices driven by belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2833—Traversing devices driven by electromagnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2884—Microprocessor-controlled traversing devices in so far the control is not special to one of the traversing devices of groups B65H54/2803 - B65H54/325 or group B65H54/38
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a method and a device for determining the zero position of a changeable via a stepper motor yarn guide a winding device of a cheese-producing textile machine.
  • thread-changing devices so-called thread-guiding drums.
  • Such thread guide drums have a groove for traversing the thread and at the same time drive the textile spool frictionally.
  • Such per se proven thread guide drums are relatively expensive to use in the production and system only for the production of cheeses in the winding type "wild winding" used because to generate a so-called precision or stepped precision winding of the drive of the cheese and the drive of the Fadenchangier nails separately have to be.
  • traversing devices which have a thread guide which is displaceably mounted parallel to the axis of rotation of the cross-wound bobbin and which is connected to a reversible individual drive, for example via a traction means.
  • facilities are known that work with a so-called Fingerfaden faced. Ie. with a yarn guide having a finger-like thread-laying lever which is pivotable about a substantially perpendicular to the cheese axis arranged axis over a certain angular range.
  • Fadenchangier spurs with a parallel to the axis of rotation of the cheese displaceable yarn guide are for example in the DE 37 34 478 A1 , in the DE 100 21 963 A1 or in the post-published DE 10 2004 003 173.8 described.
  • the in the DE 37 34 478 A1 described Fadenchangier listening has a yarn guide, which is guided in the traversing region on a yarn guide rod and is driven by a continuous motion of a microprocessor-controlled stepper motor.
  • the yarn guide is guided on a yarn guide rod and connected via a toothed belt to a reversible single drive.
  • the thread guide rod, the gears for the timing belt and the associated single drive are arranged in a largely closed housing. That is, the interior of this trained as a modular component Fadenchangier driving is sealed at the front by the Endloszugstoff.
  • the single drive of the thread guide is controlled so that a changeable in its length traverse stroke can be performed.
  • the single drive of the traversing yarn guide is equipped for this purpose with an angle encoder, which detects the rotor position of the electric motor and reports to a corresponding job control.
  • Fadenchangier spurier spurier a disadvantage of the aforementioned per se advantageous Fadenchangier bootsen is relatively large control effort that is operated to ensure proper traversing of a thread. That is, the known Fadenchangier respondeden have relatively complex and therefore expensive control and monitoring devices.
  • a comparable Fadenchangier listening is also in the WO 98/42606 described.
  • the position of a reciprocating yarn guide reciprocating within a traverse stroke is determined by the position of the rotor of the yarn guide drive. That is, the position of the rotor, the drive designed as a stepper motor, is constantly monitored by a sensor whose signals are applied to a current flow control device.
  • Stepper motors as used for driving Fadenchangier Anlagenen are known in principle for a long time and, for example, in the U.S. Patent 4,728,830 or in the U.S. Patent 4,763,034 described in detail.
  • Such stepper motors have a stator with a plurality of motor windings, which can be supplied with current.
  • stepper motors have a rotor with magnetized rotor teeth.
  • a magnetic field is generated by defined current supply to the motor windings of the stator, after which align the rotor teeth of the rotor, that is, the rotor continues step by step.
  • the present invention seeks to provide a method and an apparatus that allows a safe and accurate traversing of a running on a cross-wound yarn, the control effort should be as low as possible.
  • the method according to the invention has the particular advantage that it is ensured in a simple manner, that is to say without additional sensor devices or the like, that the thread guide can always be started at the beginning of the traversing process from a defined position. In conjunction with a stepper motor, this ensures that the traversing process can be carried out correctly, ie that the yarn guide is always in the correct position when traversing the running thread at the right time.
  • the method according to the invention there are no additional sensor devices required, but only hardware or software, which is needed anyway for the operation of a changeable via a stepper motor thread guide. This means that the method according to the invention can be realized quite inexpensively.
  • the rotor of this hybrid stepper motor is equipped with an axially magnetized permanent magnet and has rotorend detox each pronounced poles in the form of toothed pole caps.
  • Such trained rotors with a relatively large number of poles in the region of their pole caps lead during operation of the stepping motor to small angular steps, which on the one hand has a positive effect on the concentricity of the stepping motor and on the other hand leads to the shutdown of the stepping motor to a plurality of so-called locking position of the rotor. That is, such a trained stepper motor is characterized on the one hand by a good concentricity, but if necessary, but also sensitively positioned in a predetermined detent position.
  • the concentricity of the stepping motor can thereby be further optimized in a relatively simple manner that, as set forth in claim 4, the poles of the first pole cap are arranged angularly offset with respect to the poles of the second pole cap.
  • the advantageous embodiment described in claim 5 leads in conjunction with continuous Stator magnetic poles to halve the step size of the individual angular steps of the motor and thus to a very uniform concentricity of the stepping motor.
  • the stator of the hybrid stepping motor has a plurality of stator segments, which are each surrounded by energizable windings. One half of the windings is connected to a first phase of a DC power source while the other half of the windings are connected to a second phase. That is, on the circumference of the stator, stator segments energized through the first phase alternate with stator segments connected to the second phase. Applied in accordance with a control, such a stepping motor runs reliably in bipolar mode (claim 8).
  • the stator segments have, as set forth in claim 7, pole teeth corresponding to the energization of the windings of the stator with the poles of the pole caps of the rotor. That is, in the energization of the windings of the stator segments, both the N poles of the front pole cap of the rotor and the S poles of the rear pole cap of the rotor are influenced.
  • a toothed drive wheel is set (claims 9), which drives a toothed belt with a pitch of preferably 2 mm.
  • the drive wheel has, for example, 48 teeth (claims 10).
  • Fig. 1 is schematically shown in side view one half of a cross-wound textile machine 1, in the embodiment of an open-end rotor spinning machine shown.
  • Such textile machines have, as is known, between their (not shown) end frames over a plurality of similar jobs.
  • the work stations 2 each have a spinning unit 3 and a winding device 4.
  • the finished cross-wound bobbins 8 are conveyed via a cross-wound bobbin transport device 12 to a loading station (not shown) arranged on the machine end side.
  • the jobs 2 in addition to the spinning unit 3 and the winding device 4 even more handling devices, such as a thread withdrawal device 10, a suction nozzle 17 or a paraffine 14.
  • a thread withdrawal device 10 such as a thread withdrawal device 10
  • a suction nozzle 17 such as a suction nozzle 17 or a paraffine 14.
  • the function of this component is known and explained in detail in numerous patents.
  • the winding device 4 has a winding frame 9, a bobbin drive roller 11 and a Fadenchangier driven sixteenth
  • the bobbin drive roller 11 which can be acted upon by a single motor 13 by a drive, thereby drives the cross-wound bobbin 8 freely rotatably mounted in the creel 9 in a friction-locked manner.
  • Fig. 2 is the Fadenchangier worn 16 according to the invention, as it is arranged in each case in the field of winding device 4 of the numerous jobs 2 of the textile machine 1, shown in detail.
  • the Fig. 2 shows a perspective view of a designed as a modular thread guide unit 22, largely closed Fadenchangier respondeden 16th That is, the interior 37 of the housing 23 of the yarn guide unit 22 is sealed to the front by the endless draw 30, coverable with a top (not shown) cover element and then largely protected against the ingress of textile dust and fiber fly.
  • the yarn guide 25, which, as usual, is made of an abrasion-resistant material, preferably a Oxydkeramik, fixed to a guide shoe 26, which in turn is guided on a guide member 27 slidably.
  • the guide element 27 is in turn set in the side walls 28, 29 of the thread guide unit 22.
  • the guide shoe 26 is also on the outside of a endless traction means, preferably a toothed belt 30, attached, as indicated, via guide wheels 31, 32, which are arranged laterally adjacent to the traversing B of the yarn guide 25, and a drive wheel 33.
  • the drive wheel 33 is rotatably mounted on the motor shaft 24 of an electric motor, reversible drive, preferably one Hybrid stepping motor 34, arranged, which is connected via a control line 36 to a control computer 35, for example, a central computer of the textile machine.
  • control computer 35 In an alternative embodiment, a section computer or a separate workstation computer can of course also be used as the control computer 35.
  • Fig. 3 shows the yarn guide 25 in its zero position NS, that is, in a defined position with a distance a to a starting edge 15 of the housing 23 of the yarn guide unit 22nd
  • This zero position NS represents in each case the starting position for the yarn guide 25 and thus for the stepping motor 34 at the beginning of a traversing process or at a restart of the Fadenchangier sensible 16.
  • the Fig. 4 shows a front view in the formed as a hybrid stepping motor 34 thread guide drive.
  • the stator 18 has eight stator segments 19A and 19B with salient (toothed) poles 40.
  • the stator segments 19A and 19B are each surrounded by energizable windings 20A and 20B.
  • the windings 20A of the stator segments 19A are connected to a DC power source 38 via a first current phase 21A, while the windings 20B of the stator segments 19B are connected to the DC power source 38 via a second current phase 21B.
  • the circuit arrangement 39 is designed such that bipolar operation is possible, that is, the magnetization of the arranged on the stator segments 19A and 19B teeth 40 can be selectively switched to N-pole or S-pole.
  • the rotor 41 consists essentially of a motor shaft 42, an axially magnetized, preferably annular two-pole permanent magnet 43 and two, likewise toothed pole caps 44A and 44B.
  • the teeth 45A of the pole cap 44A are, for example, N poles while the teeth 45B of the pole cap 44B form S poles.
  • the teeth 45A of the pole cap 44A are also offset by a half tooth pitch from the teeth 45B of the pole cap 44B.
  • the rotor Since the rotor has a total of 50 poles, which are each spaced 7.2 ° from each other, four individual steps are required between the individual poles.
  • the 50 poles of the rotor in conjunction with the teeth on the stator elements, each form a so-called cogging torque, that is to say a defined position into which the rotor engages as soon as the motor is de-energized.
  • the yarn guide 25 is at an arbitrary distance to its desired zero position NS, which, in the in Fig. 3 illustrated embodiment, for example, 0.2 mm in front of the leading edge 15 of the housing 23 of the yarn guide unit 22 is located.
  • the yarn guide 25 is first moved slowly by the stepping motor 34 in the direction of this zero position NS and that is until it is ensured that it has reached or crossed the zero position NS. That is, at any time reaches the guide shoe 26 of the thread guide 25, the leading edge 15 of the housing 23 and runs until the switching off of the stepping motor 34 again and again against this leading edge 15 at. When switching off the rotor 41 of the stepping motor 34 falls into a so-called locking position.
  • the position of this detent position results, as explained above, from the design of the stepper motor 34 and from the electrical switching step in which the stepping motor 34 was located at the time of switching off. That is, the rotor 41 is located either in the last detent position in which the guide shoe 26 of the yarn guide 25 is directly on the leading edge 15 of the housing 23 or in the penultimate detent position, in which the guide shoe 26 of the thread guide 25 is positioned at a distance from the starting edge 15, this distance would be in the embodiment, as explained above, 1.92 mm.
  • the stepper motor 34 is energized again. That is, the windings 20A and 20B of the stator elements 19A and 19B of the stepping motor 34 are driven so that the rotor 41 further rotates by 4 steps a 1.8 ° in the direction of the last stop position and thus the zero position NS of the yarn guide 25 or tries to continue to turn ,
  • This zero position NS forms the output value for the control at each start of a traversing process.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Control Of Stepping Motors (AREA)
  • Looms (AREA)
  • Winding Filamentary Materials (AREA)

Claims (10)

  1. Procédé pour déterminer la position zéro d'un guide-fil, pouvant être déplacé en va-et-vient au moyen d'un moteur pas à pas, d'un dispositif de bobinage d'une machine textile fabriquant des bobines croisées,
    caractérisé
    en ce que le guide-fil (25) ou un élément accouplé au guide-fil (25) est, en étant sollicité par le moteur pas à pas (34), déplacé en direction de sa position zéro (NS) et positionné à faible vitesse contre une butée définie (15), disposée après la position zéro (NS) dans la direction de marche,
    en ce que le moteur pas à pas (34) est ensuite mis hors tension, de sorte que le rotor (41) du moteur pas à pas (34), indépendamment du pas de commutation dans lequel se trouve le moteur pas à pas à l'instant de la déconnexion, tombe dans l'une de deux positions possibles de crantage (RS1, RS2), sachant que la première position de crantage (RS2), qui définit en même temps la position zéro (NS) du guide-fil (25), est la dernière position de crantage dans laquelle le rotor (41) du moteur pas à pas (34) peut se positionner, à la suite de l'arrivée du guide-fil (25) contre la butée (15), lors de la déconnexion de l'alimentation électrique du bobinage de stator (20A, 20B), et que la deuxième position de crantage (RS1) est la position de crantage qui se trouve devant la première en en étant séparée d'un cycle de commutation électronique,
    et en ce que le moteur pas à pas (34) est ensuite, par une alimentation électrique définie de ses bobinages de stator (20A, 20B), asservi avec un nombre de cycles de commutation électroniques - imposé par le mode de construction du moteur pas à pas - qui est nécessaire pour faire tourner le rotor (41) d'une position de crantage dans la position de crantage suivante, de sorte qu'il est garanti que le rotor (41) du moteur pas à pas (34), lors d'une nouvelle déconnexion, se trouve dans la première position de crantage (RS2) dans laquelle le guide-fil (25) est positionné dans sa position zéro (NS).
  2. Dispositif pour déterminer la position zéro d'un guide-fil, pouvant être déplacé en va-et-vient au moyen d'un moteur pas à pas, d'un dispositif de bobinage d'une machine textile fabriquant des bobines croisées,
    sachant qu'un élément va-et-vient (16) est présent, dont le guide-fil (25) ou un élément accouplé au guide-fil (25) est raccordé à un entraînement (34) par l'intermédiaire d'un moyen de traction sans fin (30),
    caractérisé en ce que l'entraînement du guide-fil (25) est réalisé sous forme de moteur pas à pas hybride (34), avec un rotor (41) qui présente au milieu du rotor un aimant permanent bipolaire (43) axialement magnétisé et aux extrémités du rotor des pôles saillants respectifs (N ou S) sous la forme de calottes polaires dentées (44A, 44B), sachant que le rotor (41) du moteur pas à pas (34) peut, par la déconnexion et la remise sous tension définie des bobinages de stator (20A, 20B), être positionné dans une première position de crantage (RS2) de telle sorte que le moteur pas à pas (34) se trouve dans une position zéro (NS) disposée devant une butée (15).
  3. Dispositif selon la revendication 2, caractérisé en ce que les calottes polaires (44A et 44B) présentent chacune 25 pôles (45) réalisés sous forme de dents.
  4. Dispositif selon la revendication 2, caractérisé en ce que les pôles (45) d'une première calotte polaire (44A) sont disposés en étant angulairement décalés par rapport aux pôles d'une deuxième calotte polaire (44B).
  5. Dispositif selon la revendication 4, caractérisé en ce que le décalage angulaire entre les pôles (45) de la première calotte polaire (44A) et les pôles (45) de la deuxième calotte polaire (44B) est égal à une demi-distance de pas.
  6. Dispositif selon la revendication 2, caractérisé en ce que le stator (18) du moteur pas à pas hybride (34) présente des segments de stator (19A, 19B) qui sont entourés par des bobinages de stator (20A, 20B) pouvant être alimentés en courant, sachant qu'une moitié respective des bobinages est raccordée par l'intermédiaire d'un montage électrique (39) à une première phase (21A) d'une source électrique (38) de courant continu, et l'autre moitié des bobinages à une deuxième phase (21B) de ladite source.
  7. Dispositif selon la revendication 6, caractérisé en ce que les segments de stator (19A, 19B) présentent respectivement des dents polaires (40) qui sont en correspondance avec les pôles (45) des calottes polaires (44A, 44B) du rotor (41).
  8. Dispositif selon la revendication 5, caractérisé en ce que l'asservissement électrique des bobinages (20A, 20B) dans la région des segments de stator (19A, 19B) est conçu pour un fonctionnement bipolaire.
  9. Dispositif selon la revendication 2, caractérisé en ce qu'une roue menante (33) pour une courroie dentée (30) est fixée en solidarité de rotation sur l'arbre (42) du moteur pas à pas (34).
  10. Dispositif selon la revendication 9, caractérisé en ce que la roue menante (33) présente 48 dents et la courroie dentée (30) présente un pas de 2 mm.
EP05027304A 2005-01-19 2005-12-14 Méthode et dispositif pour déterminer la position zéro d'un guide-fil traversant Active EP1684403B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005002409A DE102005002409A1 (de) 2005-01-19 2005-01-19 Verfahren und Vorrichtung zum Bestimmen der Nullposition eines changierbaren Fadenführers

Publications (2)

Publication Number Publication Date
EP1684403A1 EP1684403A1 (fr) 2006-07-26
EP1684403B1 true EP1684403B1 (fr) 2008-02-27

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EP05027304A Active EP1684403B1 (fr) 2005-01-19 2005-12-14 Méthode et dispositif pour déterminer la position zéro d'un guide-fil traversant

Country Status (4)

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US (1) US7378813B2 (fr)
EP (1) EP1684403B1 (fr)
CN (1) CN1807719B (fr)
DE (2) DE102005002409A1 (fr)

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EP2765102A2 (fr) 2013-02-07 2014-08-13 Rieter CZ s.r.o. Procédé de distribution de fil enroulé et dispositif pour sa mise en oeuvre

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DE102018112802A1 (de) 2018-05-29 2019-12-05 Maschinenfabrik Rieter Ag Verfahren zum Betreiben einer Textilmaschine sowie Textilmaschine

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2765102A2 (fr) 2013-02-07 2014-08-13 Rieter CZ s.r.o. Procédé de distribution de fil enroulé et dispositif pour sa mise en oeuvre

Also Published As

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DE102005002409A1 (de) 2006-07-27
DE502005002988D1 (de) 2008-04-10
CN1807719A (zh) 2006-07-26
US20060157609A1 (en) 2006-07-20
EP1684403A1 (fr) 2006-07-26
CN1807719B (zh) 2012-05-30
US7378813B2 (en) 2008-05-27

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