EP1432635A2 - Procede pour moduler la vitesse d'un dispositif d'amenee de fil sur un metier a tisser a pince ou a projectile et systeme de traitement du fil - Google Patents

Procede pour moduler la vitesse d'un dispositif d'amenee de fil sur un metier a tisser a pince ou a projectile et systeme de traitement du fil

Info

Publication number
EP1432635A2
EP1432635A2 EP02712849A EP02712849A EP1432635A2 EP 1432635 A2 EP1432635 A2 EP 1432635A2 EP 02712849 A EP02712849 A EP 02712849A EP 02712849 A EP02712849 A EP 02712849A EP 1432635 A2 EP1432635 A2 EP 1432635A2
Authority
EP
European Patent Office
Prior art keywords
thread
speed
control unit
data
weaving machine
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.)
Granted
Application number
EP02712849A
Other languages
German (de)
English (en)
Other versions
EP1432635B1 (fr
Inventor
Lars Helge Gottfrid Tholander
Stig-Arne Blom
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
Original Assignee
Iropa AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iropa AG filed Critical Iropa AG
Publication of EP1432635A2 publication Critical patent/EP1432635A2/fr
Application granted granted Critical
Publication of EP1432635B1 publication Critical patent/EP1432635B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a thread processing system according to the preamble of the independent claim 8.
  • the thread delivery devices supplying the various channels work conventionally as autonomous units.
  • the speed control unit of the thread delivery device taking into account the current drive speed and with the aid of signals from several sensors scanning the thread, calculates the amount of thread that is required to cover the current consumption, and derives and adjusts the drive speed from it to the current consumption at all times to provide a sufficient amount of thread in the thread supply. It is also possible to include the behavior of the thread supply in the recent past and up to the current calculation time. The future development of consumption cannot be taken into account.
  • the thread sensor device comprises at least two thread sensors, which requires a high and costly outlay on equipment. Since in the autonomous operation of the thread delivery device the future, e.g.
  • the speed control is not very flexible or the speed must be controlled with safety-related additions or there may be nervous control behavior. This results in a significant risk of thread breaks. Furthermore, a quickly responsive and very powerful drive motor is required in the thread delivery device, which is expensive.
  • At least Trig signal data and / or start / stop data of the jet loom are transmitted from the main control unit to the speed control unit of the measuring delivery device in order to actuate the stopping device with precise timing on the weaving machine cycle.
  • the data transmitted by the main control unit are not used to calculate the thread quantity in the thread supply.
  • a thread processing system consisting of a weaving machine and at least one thread delivery device
  • data relating to the weaving pattern are transmitted from the main control unit of the weaving machine in a fast communication bus system to a control element of the thread delivery device.
  • This enables the control unit of the thread delivery device to adjust to future and critical operating conditions in order to avoid drastic accelerations or decelerations of the drive motor which are dependent on consumption.
  • This web pattern-related data is not used to calculate the amount of thread covering consumption.
  • the invention has for its object to provide a method of the type mentioned and a thread processing system that make it possible to improve the operating behavior of a thread delivery device of the rapier or projectile weaving machine and to simplify the structure of the thread delivery device.
  • speed control takes into account not only the recent past to the present but also a section from the future. With a view to a possible drastic increase or decrease in consumption, the speed is controlled early enough so that when the change in consumption occurs, extreme acceleration or deceleration of the drive motor is no longer necessary. A simpler and less expensive, more easily controllable drive motor can therefore be used.
  • the flexible and harmonious speed control results in a reduction in the risk of thread breaks and thus an improvement in operating behavior.
  • the simplification of the thread delivery device is considerable due to only a single thread supply sensor, and also as a result of a simpler drive motor, while the additional effort of the data transmission path from the main control unit of the rapier or projectile weaving machine to the speed control unit of the thread delivery device is negligible.
  • the data on the future working phase of the weaving machine in the respective channel is largely available with precise timing anyway, because it is used, for example, to control the channel or color selection device of this weaving machine type. It is also not a problem to program data for a future working phase of the rapier or projectile weaving machine in such a way that it represents timely, meaningful information for the speed control of each thread delivery device.
  • the consumption and speed-dependent behavior of the thread supply is determined using a single thread supply sensor in the thread supply device monitors the movement of its trigger-side limit at a reference position.
  • the sensor signals change depending on whether the thread supply is present or absent at the reference position, or may even vary analogously. These sensor signals are used with the weaving machine data to calculate the thread length, but optionally only to confirm the calculation and / or to correct the calculation. Since the speed of the drive motor of the thread delivery device is controlled flexibly and preparatively in this channel, taking into account the future working phase, relatively small fluctuations in the thread size around the reference position can be maintained, i.e. a permanently relatively optimal and only so small thread supply size that just that Avoid emptying or overfilling the memory body.
  • the drive speed is expediently derived from the calculated thread length using an algorithm.
  • the algorithm is chosen so that the speed control remains flexible and nervous control behavior is avoided.
  • the amount of thread can be calculated for each shot and the appropriate speed can be derived from it. Alternatively, the amount of thread can be calculated for several successive shots and the speed can be adjusted accordingly.
  • the drive speed is expediently controlled in such a way that a signal change of the thread supply sensor must occur at a pre-calculated point in time, provided the thread is delivered properly.
  • a determined time deviation of the signal change from the pre-calculated time can be used to derive speed corrections if the weaving machine does not work according to the transmitted data or the drive motor should not run as controlled.
  • the data on the future work phase in the channel of the thread delivery device can each be transmitted in the form of a point in time and / or a period of time.
  • this data could include certain angles of rotation or ranges of angles, for example represent the main shaft of the rapier or projectile weaving machine, which together with the incremental rotation of the main shaft are transmitted to the speed control unit of the delivery device.
  • the following group can contain important data for the correct calculation: shot start time or time to shot start, shot end time, shot duration, number of shots, pauses between successive shots, machine running speed, shot length, and the like, ie due to general data which the speed control unit receives reliable information about which amount of thread will be needed in what time period.
  • a CAN bus system or the like with only a few lines and a fast communication protocol with specially configured, serially transmitted messages is suitable for this.
  • the data used to calculate the thread quantity should at least predominantly be transmitted as messages with the highest priority.
  • Fig. 1 is a schematic view of a thread processing system consisting of a rapier or projectile loom and at least one weft delivery device, and
  • Fig. 2 is an operation diagram.
  • a thread processing system S in FIG. 1 consists of a rapier or projectile weaving machine L and at least one weft feed device F.
  • the weaving machine L works with several channels, the delivery device F shown supplying one channel.
  • the weaving machine L contains at least one entry element R, for example rapier or projectiles, a channel or color selection device A and a main control unit C, in which information about future working phases of the weaving machine L is provided, for example, in a programmed form and, for example, based on the weaving pattern.
  • the channel or color selection device A is activated by the main control unit C. controls, with the information i in the form of data from the main control unit C, in order to enter one of different weft threads Y, Y ', Y ", Y"' from a weft feeder F.
  • the delivery device F has in a housing 1 a speed-controllable electric drive motor M, which drives a winding element 2, by means of which the weft thread Y is drawn off from a supply spool 4 and wound in turns on a storage body 3, around a thread supply YS with a Form size (number of turns), which is just sufficient to cover the respective consumption by the weaving machine L.
  • a thread brake W is provided, which interacts with the storage body 3.
  • a speed signal generator D is present, which registers the current drive speed of the drive motor M or of the winding element 2 and transmits it to a speed control unit CU of the delivery device F.
  • the speed control unit CU is computerized and contains at least one microprocessor which has a signal-transmitting connection to a single thread supply sensor S of a sensor device.
  • the thread supply sensor is arranged, for example, on the housing extension 12 and aligned with a scanning zone on the storage body 3, in which the withdrawal-side limit of the thread supply YS should be positioned approximately (reference position) when the thread supply has an optimal size.
  • the optimal size is understood to mean a thread quantity with which emptying of the storage body 3 is excluded even with maximum consumption by the weaving machine L, but also overfilling when there is a consumption stop. That is, the optimal size of the thread supply YS is as small as possible.
  • the thread supply sensor S generates, for example, different signals, depending on whether the withdrawal-side limit of the thread supply YS is present in the scanning zone or not.
  • the thread supply sensor S may even work analogously.
  • a data transmission path 5 is provided between the main control unit C and the speed control unit CU, via which data in at least one future work phase of the weaving machine L is transmitted in information i '.
  • the data transmission path 5 can be formed by cables or as a wireless radio transmission path.
  • the transmission path is expediently part 5 nes bus system that uses a fast communication protocol to transfer the data in the form of serial messages (e.g. CAN bus system).
  • serial messages e.g. CAN bus system
  • the speed control unit CU and the main control unit C would be assigned CAN interface processors.
  • At least a large part of the data representing the future working phase of the weaving machine L should be contained in messages with the highest priority.
  • an input part 6 could be provided, with which information on the weft length or weaving width, the diameter or the circumferential length of the storage body 3, the weaving machine working speed and the like can be entered, in order to also provide this information as data to transmit the speed control unit CU.
  • the input part 6 'could also be on the delivery device F, e.g. at the speed control unit CU.
  • the further weft threads Y ', Y “, Y 1 " are supplied in further channels by further delivery devices F, not shown, which are likewise each equipped with only one thread supply sensor S and are connected to the main control unit C.
  • the weaving machine L runs at a predetermined working speed (rotational speed of its main shaft), the weft threads being inserted intermittently into the compartment, using grippers or projectiles R.
  • the respective entry element R takes over weft thread held ready in the channel or color selection device A in order to insert it before it is struck by the reed and cut off.
  • the weaving width and the working speed are set in advance, for example in the input section 6.
  • the pattern-dependent sequence with which the weft threads are inserted is controlled by the main control unit C by means of the information i for the channel or color selection device A.
  • the delivery device F has the thread supply YS on its storage body 3, which serves to cover the consumption and is supplemented by the speed control of the drive motor M in such a way that the withdrawal-side limit of the thread supply is kept at least approximately at the scanning position of the thread supply sensor S.
  • the speed control unit CU receives data which is contained in information i 'for at least one future working phase of the weaving machine L.
  • the speed control unit CU calculates, if necessary also taking into account the signal data of the thread supply sensor, the amount of thread on the storage body 3 required to cover the consumption
  • the speed of the drive motor M is derived from the calculated thread quantity using an appropriate algorithm and is varied or adjusted accordingly.
  • the behavior of the thread supply in the past before the calculation time, the size of the thread supply in the present
  • the future behavior of the thread supply in the future for the future Working phase of the weaving machine L
  • the signal changes of the thread supply sensor may be taken into account in the calculation, but can also mainly be used only to confirm the correctness of the calculation or to correct the calculated thread quantity and for speed control if deviations between the calculated conditions and the actual conditions occur and should be determined ,
  • the instantaneous working speed of the weaving machine, the weaving width and the like can also be transmitted.
  • the speed control unit CU can first calculate the amount of thread covering consumption and control the optimum speed of the drive motor from this. Since the data of the transmitted information i ' also represent at least one future working phase of the weaving machine L, the speed control can be adapted to the future development of consumption.
  • the speed of the drive motor is reduced in advance, because then there will be enough time anyway for the thread supply YS to match the bring required minimum size.
  • the drive speed of the drive motor M is set higher from the outset in order to easily take into account the remaining consumption in advance.
  • This prepared speed control is also expedient for a future consumption stop for a long time, or in the case of a very rapidly increasing consumption, in order to avoid strong accelerations or decelerations of the drive motor, which could be harmful for the thread Y.
  • Fig. 2 shows schematically the behavior of the thread supply YS over time t.
  • the speed control unit CU has e.g. stored information about the previous behavior of the thread supply YS in the past P.
  • the horizontal dashed line represents, for example, the scanning zone (reference position) of the thread supply sensor S.
  • the withdrawal-side limit of the thread supply YS should expediently fluctuate only slightly in this scanning zone.
  • the speed control unit CU knows at time x (present T) that the next shot P1 will start at time x1 and then last for a period of time x2 and will end at time x3. Then there will be a pause x4 until the starting time x5 of the next shot P2.
  • At least the data on the work phase e.g. are transmitted between times x to x3, expediently even up to time x5 or even further into the future E.
  • the speed control unit CU knows exactly how the thread consumption will develop and how the consumption-covering thread quantity in the thread supply YS is to be calculated, and the speed of the drive motor can be controlled from it.
  • each delivery device F assigned to the respective channel need not measure the weft thread length.
  • each delivery device has previously worked as an autonomous unit, which has no connection to the weaving machine except via the thread and which responds to the current consumption-dependent thread supply development with several on-board thread sensors and accelerates or decelerates or stops the drive motor according to the sensor signals, and so far without direct information about future work phases in the weaving machine.
  • this autonomous principle is abandoned in the thread processing system S described in FIGS.
  • the delivery device F now works with a single thread supply sensor S and in strict dependence on the operational phases of the weaving machine L because its speed control unit CU is functionally related to the main control unit C. the weaving machine L is linked. Without the information i 'and the data contained therein, the delivery device F would not be able to function with only a single thread supply sensor S, since the speed control device CU would then not be able to guarantee the necessary consumption coverage.
  • the data transfer to the speed control unit CU, the software-side preparation and the processing of the transmitted data mean only a negligible additional effort for the delivery device, compared to the structural simplification thanks to the single thread supply sensor.
  • the drive motor M with its control circuits can also be designed more easily, since the speed control is more flexible thanks to the predictive information about the working phases of the weaving machine and no extreme acceleration or deceleration phases have to be driven.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

L'invention concerne un procédé pour moduler la vitesse d'entraînement d'un dispositif d'amenée de fil qui alimente un canal d'un métier à tisser à pince ou à projectile. Selon le procédé, en plus de données de signal d'un unique capteur de fil et de données de vitesse du moteur d'entraînement, des données concernant une phase de travail à venir du métier à tisser dans ce canal sont transmises par l'unité de commande principale à une unité de commande de vitesse du dispositif d'amenée de fil. Ces données permettent ensuite de calculer la quantité de fil nécessaire pour la phase de travail dans ce canal, cette quantité de fil calculée permettant alors de déterminer et de régler la vitesse d'entraînement du moteur.
EP02712849A 2001-01-25 2002-01-24 Procede pour moduler la vitesse d'un dispositif d'amenee de fil sur un metier a tisser a pince ou a projectile et systeme de traitement du fil Expired - Lifetime EP1432635B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2001103342 DE10103342A1 (de) 2001-01-25 2001-01-25 Verfahren zur Geschwindigkeitssteuerung eines Fadenliefergeräts einer Greifer- oder Projektilwebmaschine, und fadenverarbeitendes System
DE10103342 2001-01-25
PCT/EP2002/000723 WO2002060799A2 (fr) 2001-01-25 2002-01-24 Procede pour moduler la vitesse d'un dispositif d'amenee de fil sur un metier a tisser a pince ou a projectile et systeme de traitement du fil

Publications (2)

Publication Number Publication Date
EP1432635A2 true EP1432635A2 (fr) 2004-06-30
EP1432635B1 EP1432635B1 (fr) 2009-05-06

Family

ID=7671731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02712849A Expired - Lifetime EP1432635B1 (fr) 2001-01-25 2002-01-24 Procede pour moduler la vitesse d'un dispositif d'amenee de fil sur un metier a tisser a pince ou a projectile et systeme de traitement du fil

Country Status (5)

Country Link
EP (1) EP1432635B1 (fr)
CN (1) CN1297461C (fr)
AU (1) AU2002244670A1 (fr)
DE (2) DE10103342A1 (fr)
WO (1) WO2002060799A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10301095A1 (de) * 2003-01-14 2004-07-22 Iropa Ag Verfahren zum Steuern eines Fadenverarbeitungssystems und Fadenverarbeitungssystem
DE10348872A1 (de) * 2003-10-21 2005-05-25 Iro Ab Verfahren zum Einstellen der Fadenspannung, und Projektil- oder Greiferwebmaschine
DE102004058406A1 (de) * 2004-12-03 2006-06-14 Iro Ab Verfahren zum Betreiben eines fadenverarbeitenden Systems
WO2007128143A1 (fr) * 2006-05-04 2007-11-15 Textilma Ag Métier à tisser, en particulier métier à tisser les rubans
ITMI20112369A1 (it) 2011-12-23 2013-06-24 Btsr Int Spa Metodo e dispositivo ad accumulo di filato per alimentare un filo senza creare torsioni dello stesso
CN113465343B (zh) * 2021-09-03 2021-11-05 南通春潮纺织品有限公司 一种基于物联网技术的纺织加工用烘干装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07858B2 (ja) * 1985-02-21 1995-01-11 株式会社豊田中央研究所 ジエツトル−ムにおける複数のよこ糸選択貯留装置の制御装置
SE8900534D0 (sv) * 1989-02-16 1989-02-16 Iro Ab Anordning foer att i eller vid textilmaskin styra och/eller oevervaka i foersta hand fournisoersorgan/fournisoersfunktioner
IT1234790B (it) * 1989-06-06 1992-05-27 Lgl Electronics Spa Dispositivo di conteggio delle spire svolgentisi dagli apparecchi alimentatori di trama per telai di tessitura, a scopo di regolazione della velocita' di detti apparecchi

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02060799A3 *

Also Published As

Publication number Publication date
AU2002244670A1 (en) 2002-08-12
WO2002060799A3 (fr) 2004-04-22
EP1432635B1 (fr) 2009-05-06
CN1635976A (zh) 2005-07-06
CN1297461C (zh) 2007-01-31
DE10103342A1 (de) 2002-08-01
WO2002060799A2 (fr) 2002-08-08
DE50213530D1 (de) 2009-06-18

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