EP1015370B1 - Procede pour le stockage intermediaire de fil, et appareil distributeur - Google Patents

Procede pour le stockage intermediaire de fil, et appareil distributeur Download PDF

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Publication number
EP1015370B1
EP1015370B1 EP98951407A EP98951407A EP1015370B1 EP 1015370 B1 EP1015370 B1 EP 1015370B1 EP 98951407 A EP98951407 A EP 98951407A EP 98951407 A EP98951407 A EP 98951407A EP 1015370 B1 EP1015370 B1 EP 1015370B1
Authority
EP
European Patent Office
Prior art keywords
winding
standstill
holding
holding torque
thread
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
EP98951407A
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German (de)
English (en)
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EP1015370A1 (fr
Inventor
Björn Halvarsson
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.)
Iropa AG
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Iropa AG
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Filing date
Publication date
Application filed by Iropa AG filed Critical Iropa AG
Publication of EP1015370A1 publication Critical patent/EP1015370A1/fr
Application granted granted Critical
Publication of EP1015370B1 publication Critical patent/EP1015370B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a delivery device according to the preamble of claim 6.
  • EP-A-580 267 and EP-A-327 973 disclose methods for the temporary storage of Thread and known delivery devices suitable for performing the method, in which when a stop signal for the electrical winding rotary drive is present, another Creeper rotation in the winding direction is controlled after a selected one Position signal was obtained from the relative rotational movement between the Winding element and the storage body is derived.
  • the winding rotary drive is electrically braked to crawl speed and then over one predetermined rotation angle rotated into a certain rotational position before the standstill occurs. At standstill, however, there can still be a traction in the thread between the take-up device and the storage body are present or can be in the delivery device provided elastic components, e.g.
  • an elastic filler or an elastic one -Dust seal generate a reverse torque in the multi-turn actuator.
  • the reverse torque there is a reverse rotation after standstill, through which the thread in at least the first turn on the storage body becomes loose and passes over further thread turns lying on the storage body can.
  • the loose thread is suddenly tensioned, which can lead to a thread break, or the part of the turn fallen over other turns remains in this incorrect one Position, causing a goods defect in the thread pulling off the delivery device Textile machine is coming.
  • This is particularly critical with air jet weaving machines and delivery devices, each only a predetermined thread length by a Release stop device controlled for an entry.
  • the deducted one after the other Windings are monitored in order to reach the stop device shortly before each the set thread length. Lying over one another Turns, then these can hardly be detected when withdrawn, which leads to a Tissue defects can result.
  • the adverse effect of reverse rotation of the winding rotary drive other delivery devices e.g. undesirable for projectile or rapier weaving machines, especially for multicolor weaving with long periods of standstill for one color, independently whether it is a delivery device with a stationary or rotating storage body or with a storage body with variable or constant Diameter.
  • the reversing movement can certainly lead to a rotation path of the Outlet of the winding element between e.g. Lead 3 and 7 cm.
  • JP-A-05 179538 describes a method for temporarily storing thread on a thread drum-like storage body of a delivery device known, in which leading to Start of the standstill period in the winding rotary drive electrically in the winding direction oriented holding torque is generated. This holding torque is during the standstill period and with the winding drive stopped. In this process, the winding rotary drive runs after the initially strong one Deceleration when braking gradually to a standstill. The standstill condition is held even when there is tension in the upstream thread section tries to turn the winding drive back in the opposite direction. A creeper turn over a predetermined period of time or a predetermined angle of rotation not controlled because the holding torque is considered sufficient leading up to the real standstill of the winding rotary drive.
  • the invention has for its object a method of the type mentioned as well as to specify a delivery device for performing the method with which faults and damage due to a backward movement after a standstill is avoided and a correct thread control can be achieved in the phase-out phase.
  • the crawl gear rotation that was deliberately controlled before the setting of the holding torque of the winding rotary drive over a predetermined period of time or over a
  • the predetermined angle of rotation serves for a correct thread control in the phase-out phase and eventually also to the winding rotary drive finally in a predetermined Bring the position to a standstill.
  • the one set with the standstill Holding torque prevents the thread from moving during the idle period relaxes or loosens. Since the holding torque is maintained over the standstill period remains, the proper changes over the downtime period Thread position is not.
  • the holding torque has an additive effect on the system-specific Rotational resistance of the winding rotary drive and the components connected to it, but without generating a rotation in the winding direction.
  • the winding rotary drive is so to speak statically biased in the winding direction after it has turned its creeper gear executed.
  • the thread breakage quota and also the quota noticeably reduce any tissue defects. This is especially true with weaving machines advantageous, where there are longer standstill periods depending on the pattern for individual delivery devices gives.
  • the backstop can be timed by a holding current Activate exactly and is therefore sufficient for high-speed delivery devices precise to suppress the unwanted turning back. It can anyway Control engineering and design components for this additional function can also be used.
  • the holding torque is constant and control technology simply set by means of a holding current or a holding voltage if a standstill period begins and is maintained throughout the standstill period.
  • the holding torque is set exactly at standstill. ideal would be to stop the torque briefly after standstill, e.g. a few milliseconds later, to set the breakaway torque that occurs when the machine is at a standstill of the winding rotary drive, which works in both directions of rotation.
  • the exact point in time can be difficult from a control point of view to detect the mechanical standstill of the delivery device and then the setting of the holding torque to match.
  • the holding torque depending on the thread quality and / or the mechanical resistance to rotation with regard to on the one hand, the expected return torque completely or at least to compensate as far as possible, and on the other hand no further movement in the winding direction to effect.
  • a step function to avoid the frequency while lowering the voltage around increased many times over This allows the holding torque to be set sensitively and maintain.
  • the holding torque via a microprocessor of the electrical Control device set that prepares software for this task is.
  • Microprocessors usually provided in delivery devices are like control electronics readily able to perform this additional task without being constructive To carry out modifications to the delivery device.
  • a yarn delivery device F in FIG. 1 serves to temporarily store a yarn Y in the Thread delivery to a consumer, such as a weaving machine, the Thread Y processed as a weft.
  • the delivery device F could have a different training can also be used for a knitting machine.
  • a winding element 2 rotatably arranged, which by means of a winding rotary drive 3, e.g. one Asynchronous motor, relative to a drum-shaped, stationary storage body 4 is rotatable, e.g. in winding direction 5.
  • the thread Y is from a supply spool 7 withdrawn, and through a hollow shaft with an inclined winding tube 2a brought to the outer periphery of the storage body 4 and thereon in side by side Windings 6 wound tangentially.
  • An electronic control device CU is connected to the winding rotary drive 3 and contains, for example Microprocessor MP.
  • An optionally provided sensor S1 generates signals which represent the rotational position of the winding element 2.
  • Another sensor S2 can be the number of thread turns 6 or the size of the thread turns Scan the thread supply formed on the storage body 4 and depending on it of whether the thread supply falls below a predetermined limit or one exceeds another predetermined limit, deliver signals to the control device CU.
  • the control device CU controls the winding rotation drive with the help of the microprocessor MP 3 such that the winding element to supplement the thread supply 2 is rotated in winding direction 5 or depending on signals from the sensor S2 or S1 or a signal from the assigned textile machine of the winding rotary drive 3 stopped for a period of standstill, and if necessary is electronically braked to a standstill. If necessary, before reaching the standstill a certain angle of rotation or a certain period of time with a Drive through the winding direction at crawl speed.
  • the Wikkelwood 3 forms an electromotive that can be activated via the control device CU Reverse lock D of the thread delivery device.
  • the thread delivery device F could have a thread braking device downstream of the windings 6 and be equipped for thread delivery to one Projectile or rapier weaving machine (not shown) are used.
  • the thread delivery device F would be designed as a measuring delivery device, that for each entry process an exactly predetermined thread length Deduction releases.
  • The could Storage body with variable diameter or with constant diameter be trained.
  • the above-mentioned backstop D has the task of turning back the winding element 2 to prevent when the winding rotary drive 3 is stopped, so that the thread Y in the course of the winding element 2, 2a except for the storage body 4 relaxes or loosens.
  • a backward movement could be caused by a at standstill in thread Y, the tension acting due to the lever arm of the Outlet of the winding element 2 to the winding element 2 in the reverse direction seeks to twist, or for example through elastic components K in the thread delivery device, which act when the winding element 2 comes to a standstill into the winding rotary drive 3.
  • the backstop D works as follows:
  • the Winding drive 3 When the winding element comes to a standstill at the beginning of a standstill period, the Winding drive 3, a holding torque, preferably with a constant strength, set and maintained throughout the downtime.
  • the holding torque is only set so strongly that no further rotation in the winding direction of rotation in the single rotary drive 3 occurs, and that the winding element under the reverse torque 2 is not turned backwards.
  • the holding torque at standstill is also compared the frequency shortly before standstill, e.g. a factor of 10 or more, increased frequency with a correspondingly reduced voltage. If the frequency is approximately 0.5 Hz during the crawl phase until standstill was, the frequency is set to 5.0 to 10 Hz to control the holding torque increased to avoid an unwanted step function.
  • the setting of the holding torque is expedient from reaching the electrical speed Made zero, i.e. at a time when the mechanical speed is not yet at zero or the standstill has not yet occurred.
  • a voltage can be used to set the holding torque between 2% and 5% of the nominal operating voltage.
  • the Holding torque can be corresponding to an electrical speed of e.g. only 1% of the maximum electrical speed can be set, so that the winding element does not continue to rotate after it has stopped.
  • Fig. 2 the time is plotted on the horizontal axis, while the speed, the torque or the current of the winding rotary drive are shown vertically over time.
  • the initial area B belongs to a running phase, which is followed by a standstill period C, which is followed by a new running phase B.
  • the electrical speed of the winding rotary drive drops sharply because it is expedient to brake electrically.
  • electrical speed zero is reached. The mechanical speed drops until the actual standstill t X.
  • the constantly set holding torque H is maintained, which is either set at time t V , that is, leading to standstill t X , or in the case of mechanical standstill at time t X , or lagging by a time difference ⁇ t at time t n .
  • the winding rotation drive is started again in the winding direction along curve b.
  • the winding rotary drive can be in Control both directions of rotation for processing threads with S or Z twist.
  • the holding torque H is generated in the selected winding direction, however only with a strength that a further turning of the winding rotary drive in Avoids winding direction 5, however, a reverse rotation below the reverse torque prevented.
  • Fig. 3 it is indicated above the time axis t how the holding torque H, which acts in the winding direction with a constant size, is set from standstill t X or leading or lagging at time t V or t n and with the system-related rotational resistance M W of the winding rotary drive and the components of the delivery device coupled therewith are effective against the negative return torque R which occurs from standstill (time t X ).
  • the return torque may be variable, but is not able to overcome the sum of the holding torque H and the mechanical rotational resistance M W in the reverse direction.
  • the holding torque H is only so large that it is unable to overcome the mechanical rotational resistance M W in the winding direction.
  • the winding rotary drive therefore remains in a statically pretensioned state in the winding direction over the standstill period, without rotating in the winding direction or in the opposite direction.
  • the holding torque may still increase in the event that rotation of the winding rotary drive in the winding direction should occur
  • Signal of the sensor S1 can be used in the control device CU in Fig. 1, to cancel or lower the holding torque H.
  • the electromotive backstop D can be used for delivery devices that have a stationary or rotationally driven storage body. Such delivery devices with electromotive reversing lock D can also be used for other thread-consuming users Textile machines are used as those mentioned above.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Looms (AREA)

Claims (7)

  1. Procédé pour le stockage intermédiaire de fil (Y) sur un organe de stockage (4), en forme de tambour, d'un appareil distributeur (F), dans lequel le fil est, au moyen d'un mécanisme de bobinage électrique (3), déposé en spires (6) sur l'organe de stockage (4) avec des mouvements de rotation relative, interrompus pendant des périodes d'arrêt (C), entre un élément d'enroulement (2) et l'organe de stockage (4),
    dans lequel, au début de chaque période d'arrêt (C), le mécanisme de bobinage continue à tourner dans le sens de l'enroulement (5), pendant une période prédéterminée ou sur un angle de rotation prédéterminé, en rotation à vitesse lente jusqu'à l'arrêt
    caractérisé par le fait qu'à partir du début et pendant la période d'arrêt (C), se produit, dans le mécanisme de bobinage (3), sans poursuite de la rotation dans le sens du bobinage (5), un couple de maintien (H) agissant dans le sens du bobinage (5).
  2. Procédé selon la revendication 1, caractérisé par le fait que le couple de maintien (H) est mis en oeuvre au moyen d'un courant de maintien ou d'une tension de maintien et qu'il est constant.
  3. Procédé selon la revendication 1, caractérisé par le fait que le couple de maintien (H) est mis en oeuvre exactement au moment de l'arrêt mécanique (tx) du mécanisme de bobinage (3).
  4. Procédé selon au moins l'une des revendications précédentes, caractérisé par le fait que le couple de maintien (H) est mis en oeuvre en fonction de la qualité du fil et/ou de la résistance mécanique à la rotation (Mw) du mécanisme de bobinage (3) et des composants qui lui sont mécaniquement couplés.
  5. Procédé selon au moins l'une des revendications précédentes, caractérisé par le fait que le mécanisme de bobinage (3) présente un moteur asynchrone commandé au moyen d'une modulation de largeur d'impulsion et que pour la mise en oeuvre du couple de maintien (H), la fréquence de modulation croít, par rapport à la fréquence mise en oeuvre peu avant l'arrêt, d'un multiple, par exemple de plus que le facteur 10, et que la tension décroít alors pour atteindre une fraction de la tension d'exploitation nominale, par exemple 2 % à 5 %.
  6. Appareil distributeur pour la mise en oeuvre du procédé selon au moins l'une des revendications 1 à 5, caractérisé par le fait qu'est prévu un verrou anti-retour électromotorisé (D) qui, à la suite d'une rotation à vitesse lente préalable dans le sens du bobinage (5), à partir du début et pendant chaque période d'arrêt (C), peut être activé par un courant de maintien, que c'est le mécanisme de bobinage (3) qui forme le verrou anti-retour (V) et, une fois activé, génère, sans poursuite de la rotation dans le sens du bobinage (5), un couple de maintien (H) dans le sens du bobinage.
  7. Appareil distributeur selon la revendication 6, caractérisé par le fait que le mécanisme de bobinage (3) est relié à un organe de commande électrique (CU) qui contient un microprocesseur (MP) et que le microprocesseur (MP) présente au moins une routine de programmation avec laquelle, pendant une période d'arrêt, le courant de maintien ou la tension de maintien pour le mécanisme de bobinage peut être mis en oeuvre pour activer le verrou anti-retour (D).
EP98951407A 1997-09-16 1998-09-15 Procede pour le stockage intermediaire de fil, et appareil distributeur Expired - Lifetime EP1015370B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9703369A SE9703369D0 (sv) 1997-09-16 1997-09-16 Verfahren zum zwischenspeichern von faden und liefergerät
SE9703369 1997-09-16
PCT/EP1998/005870 WO1999014149A1 (fr) 1997-09-16 1998-09-15 Procede pour le stockage intermediaire de fil, et appareil distributeur

Publications (2)

Publication Number Publication Date
EP1015370A1 EP1015370A1 (fr) 2000-07-05
EP1015370B1 true EP1015370B1 (fr) 2002-07-17

Family

ID=20408291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98951407A Expired - Lifetime EP1015370B1 (fr) 1997-09-16 1998-09-15 Procede pour le stockage intermediaire de fil, et appareil distributeur

Country Status (7)

Country Link
US (1) US6279619B1 (fr)
EP (1) EP1015370B1 (fr)
JP (1) JP2001516691A (fr)
KR (1) KR100375717B1 (fr)
DE (1) DE59804821D1 (fr)
SE (1) SE9703369D0 (fr)
WO (1) WO1999014149A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102574656A (zh) * 2009-09-30 2012-07-11 村田机械株式会社 纱线卷绕装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19941889A1 (de) * 1999-09-02 2001-03-08 Iro Patent Ag Baar Fadenliefergerät
EP1087045B1 (fr) * 1999-09-27 2004-02-25 Sultex AG Procédé pour faire fonctionner le fournisseur d'un métier à tisser
US6371169B1 (en) 1999-09-27 2002-04-16 Sulzer Textil Ag Method for the operation of a thread supplying apparatus of a weaving machine
DE10014623A1 (de) 2000-03-24 2001-09-27 Iro Patent Ag Baar Verfahren zum Steuern eines Webmaschinen-Fadenliefergeräts
DE10153856A1 (de) * 2001-11-02 2003-05-15 Iropa Ag Fadenliefervorrichtung und Verfahren zur Fadenlieferung
DE102005023929B3 (de) * 2005-05-24 2006-09-14 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Verfahren zum Betreiben einer Projektilwebmaschine
CN102548884B (zh) 2009-09-30 2016-03-16 村田机械株式会社 纱线卷绕装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH616902A5 (fr) 1976-10-28 1980-04-30 Sulzer Ag
IT1217339B (it) * 1988-02-11 1990-03-22 Roy Electrotex Spa Alimentatore di filo per macchine tessili
JPH05179538A (ja) 1991-12-27 1993-07-20 Ichikawa Tekkosho:Yugen フィーダー装置
NL9201344A (nl) 1992-07-24 1994-02-16 Rueti Inrichting voor het voeden van een periodiek werkende garen-verwerkende inrichting.
SE502175C2 (sv) * 1993-12-17 1995-09-04 Iro Ab Förfarande och anordning för fastställande av trådmagasinets variation på en fournissör
DE19526216A1 (de) * 1995-07-18 1997-01-23 Iro Ab Verfahren zum Abtasten eines Fadens und Fadenabzugssensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102574656A (zh) * 2009-09-30 2012-07-11 村田机械株式会社 纱线卷绕装置
CN102574656B (zh) * 2009-09-30 2013-08-28 村田机械株式会社 纱线卷绕装置

Also Published As

Publication number Publication date
KR100375717B1 (ko) 2003-03-15
DE59804821D1 (de) 2002-08-22
KR20010024019A (ko) 2001-03-26
SE9703369D0 (sv) 1997-09-16
JP2001516691A (ja) 2001-10-02
US6279619B1 (en) 2001-08-28
WO1999014149A1 (fr) 1999-03-25
EP1015370A1 (fr) 2000-07-05

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