EP1648808B1 - Systeme de traitement de fils et procede d'adaptation - Google Patents

Systeme de traitement de fils et procede d'adaptation Download PDF

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Publication number
EP1648808B1
EP1648808B1 EP04740812A EP04740812A EP1648808B1 EP 1648808 B1 EP1648808 B1 EP 1648808B1 EP 04740812 A EP04740812 A EP 04740812A EP 04740812 A EP04740812 A EP 04740812A EP 1648808 B1 EP1648808 B1 EP 1648808B1
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EP
European Patent Office
Prior art keywords
yarn
storage body
diameter
level threshold
thread
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Expired - Lifetime
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EP04740812A
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German (de)
English (en)
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EP1648808A1 (fr
Inventor
Marco Covelli
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Iropa AG
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Iropa AG
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Publication date
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    • 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
    • D03D47/367—Monitoring yarn quantity on the drum

Definitions

  • the invention relates to a thread processing system according to the preamble of claim 1 and a method according to the preamble of claim 6.
  • the weft length must be dimensioned according to the respectively set weaving width in the air-jet loom by the measuring delivery device.
  • a stop device with a stop element is provided on the measuring delivery device Depending on the weave cycle is moved into the storage body or withdrawn.
  • the engaged stop element locks the weft thread against a trigger.
  • the retracted stopper leaves until a new engagement a predetermined number of weft thread turns deducted until the respective shot length is reached.
  • the diameter of the storage body is set so that an integer multiple (the number of turns to be released) of the storage body circumference corresponds to the weft length or weaving width.
  • Such a setting is required, for example, with every change in the weaving width, and possibly also as readjustment when too short or too long weft threads occur.
  • an information transmission path for example in a serial CAN bus system for at least the shot length or the weaving width.
  • the microprocessor of the measuring supply device controller calculates the number of weft yarn turns to be released per shot and the respectively optimal diameter of the storage body; which is displayed either on the measuring device or on the control panel of the loom control, so that the staff can make the diameter adjustment manually or with an auxiliary device.
  • the Meßunter choir-control is also responsible for providing on the storage body in each case a just enough large number of weft threads that covers the consumption by the intermittent weft thread withdrawal and is continuously supplemented. The weft threads are going through a winding element formed on the storage body.
  • the winding element is driven by a motor controlled by the metering device controller in response to signals from an opto-electronic thread sensor which provides signals to the microprocessor from the presence or absence of the weft in a scanning zone on the storage body. If the thread sensor detects the presence of the weft in the scanning zone, the motor will be decelerated or stopped. If the thread sensor detects the absence of the weft in the scanning zone, then the motor is accelerated.
  • opto-electronic thread sensors which can be divided mainly into two categories.
  • the thread sensor of the first category uses a reflective surface from the storage body and monitors the reflected light from the surface, which is shaded as soon as the thread has arrived on the surface.
  • the thread sensor of the other category scans the weft directly, ie, it monitors the reflected light from the weft in presence.
  • a metering device especially in a metering device operating with a thread separation, the use of the thread sensor of the first category with reflective surface in the storage body is impractical for several reasons:
  • the space for operating elements of the storage body hardly allows the reflective surface to be accommodated.
  • the installation space to be used for the thread measuring stop device restricts the accommodation of a reflective surface. Since the contact area between the weft thread and the storage body should be as small as possible in order to minimize harmful friction, the large reflecting surface can hardly provide sufficient size.
  • the signal evaluation is difficult because it can no longer be reliably discriminated because of unavoidable contamination, whether the reflective surface is covered by the weft thread or by dirt. All these restrictions do not apply to the thread sensor of the second category, which is therefore preferred for such thread processing systems.
  • the yarn sensor scanning the reflection light of the weft yarn another problem is that it may be difficult to discriminate between reflected light from the weft yarn and reflected light from mechanical parts of the storage body. Namely, the light reflected from each background component changes in intensity, for example, depending on whether a large diameter or a small diameter is set, which is the light path distance changes.
  • the Meßbiesch does not know the actually set diameter, so far erroneous signals can not be reliably avoided after a diameter adjustment.
  • the invention has for its object to provide a yarn processing system and a method of the type mentioned, with which the aforementioned disadvantage of a yarn sensor of the second category in the measuring device is eliminated in a structurally simple manner, and changing light reflections of background parts of the storage body has no effect on the precision take the weft scanning.
  • the recognition is taken into account that the signal levels of the presence and absence signals decrease with decreasing diameter of the storage body in an opto-electronic, responsive to the reflection light of the weft yarn sensor and make it difficult, regardless of the set diameter between the presence and absence signal levels discriminate.
  • the envisaged level-threshold selector device provides a level threshold value for the evaluation of the signal levels which lies between the presence and absence signal levels generated at this diameter for a specific diameter setting range or a specific diameter of the storage body.
  • the selected level threshold is, so to speak, a reference plane, with the aid of which the microprocessor is informed exactly whether the thread sensor has detected the presence or absence of the weft thread.
  • the level threshold selector utilizes the anyway available shot length or web width information and outputs the signal evaluation level threshold that matches the set web width or the diameter set with respect to the weave width. In this way, a falsifying influence is automatically prevented with the diameter adjustment changing background reflection light, because the currently selected level threshold on the diameter-dependent distance between the thread sensor and the weft thread is adjusted so that it between the, resulting in this diameter - and absence signal levels.
  • the web width information is transmitted via the information transmission path to the level threshold selector. Based on this information, the level threshold selector knows which of the different level thresholds are needed.
  • the information can be transmitted directly from the weaving machine controller, or indirectly via the microprocessor, which may even process the information, if necessary, and issue a corresponding selection command to the level threshold selector, or to the signal level evaluation for the appropriate level control. Threshold procured.
  • the selector uses the already existing Webbreiten- or diameter information to adjust the response of the yarn sensor according to and, above all, automatically, so that after performed diameter adjustment of the microprocessor is able to perform the control of the motor.
  • the measuring delivery device is automatically adapted to the current weaving width by means of the weft scanning web width information, without the staff needing to do more than to set the specified diameter of the storage body.
  • a Transmission distance either from the microprocessor or from the display to the level threshold selector are provided which provides the correct level threshold for the signal level evaluation based on the calculated diameter.
  • the level threshold selector is conveniently integrated into the microprocessor which, in any case, performs the signal level evaluation and obtains the web width information from the loom control.
  • the level-threshold selector could, however, also be incorporated into the thread sensor or its electronics.
  • the level threshold selector includes at least two different level thresholds associated with, for example, the maximum diameter and the minimum diameter or diameter adjustment ranges near the maximum and minimum diameters.
  • the level thresholds may be retrievable in a table. It is conceivable not only to call up the threshold values in stages, but also to provide the threshold values steplessly. In the table, the level threshold values are correspondingly assigned to different web widths or different diameters of the memory body, so that depending on the content of the web width information or the value of the calculated diameter, the respectively correct level threshold value is called up or set.
  • An in Fig. 1 A yarn-processing system shown schematically has an air-jet weaving machine W and in one of optionally a plurality of thread channels a weft measuring device F, from which an entry device E intermittently inserts weft threads Y of a predetermined length into a shed 5.
  • the air-jet weaving machine W includes air nozzles controlled in the feeder E and has a weaving width B of a predetermined dimension shown in solid lines.
  • the weaving width B is changeable, as indicated at B '.
  • a control panel 6 of the loom is connected to a weaving machine controller MC, which in turn is connected to a measuring feeder controller C via, for example, a communication bus system BS (e.g., CAN system) and / or at least one information transmission line A.
  • BS e.g., CAN system
  • the measuring delivery device F has a drive motor M for a take-up element 2 in a housing.
  • a storage body 3 is mounted stationarily, which is formed, for example, as a rod cage with thin fingers and used to support a formed by winding element 2, consisting of turns thread supply.
  • the storage body 3 can be driven with the winding element 2 feed elements (not shown) work to produce a separation between the turns.
  • a stop device P is mounted with a stop element which is adjustable between a stop position and a withdrawal position as usual. Further, an opto-electronic thread sensor S is provided, which responds to the reflection light from the windings and signals to the delivery device controller C, the signal level depends on whether a thread winding in a scanning zone is present or absent.
  • the measuring supply controller C evaluates the signals and drives the drive motor M to set the thread supply in a certain size (with a certain number of turns, for example up to the scanning zone).
  • a manual or mechanical, possibly even remotely controllable, diameter-adjusting device 4 is provided for the storage body 3 . The diameter is marked D.
  • the stopping device P is, as usual, from the Meßunter réelle Kunststoffung C, optionally taking into account information transmitted over the link A or otherwise, depending on the weaving cycle, to release the weft Y for withdrawal or to block the trigger.
  • the loom MC is taken over the selected cloth width B, B 'informed and provides permanent or clocked information i B to the weaving width B, B' to the measurement feeding device controller C. With this information the measuring feeding device control how many windings per shot calculated for Discharge should be released, and which diameter D is considered optimal and corresponds to an integer multiple of the memory body circumference of the weaving width B.
  • Fig. 2 illustrates schematically equipment components of the measuring delivery device F.
  • a housing extension of the opto-electronic yarn sensor S is placed so that it scans the weft yarn Y in a predetermined scanning zone Z on the storage body 3. Since in the storage body 3 components form a reflective background, the thread sensor S picks up the reflection light from the weft, vary depending on the set diameter (in Fig. 2 the minimum and maximum diameters D max and D min are indicated) because of the removal of the thread sensor S from the reflective background and the reflective weft yarn, the levels of the signals emitted. This is based on Fig. 3 explained.
  • Fig. 3 shows, for example, on the vertical axis in volts (V) signal level of the yarn sensor S, and on the horizontal axis the diameter D in millimeters.
  • the first vertical line in the diagram corresponds to the maximum set diameter D max .
  • the vertical line shown on the right represents the minimum set diameter D min .
  • the maximum signal signal level changes from H i in the absence of the weft to L o in the presence of the weft in the scanning zone Z.
  • the absence signal level H i ' is 3V and the presence signal level L o ' is only 2V. Since the measuring delivery device control over the actually set diameter D is not is informed, they could make no more reliable statement about the control of the motor M from the so diminishing with decreasing diameter signal levels.
  • different level threshold values S1, S2 are provided for the signal level evaluation for different diameter settings or at least for each one diameter setting range.
  • the level threshold S1 which is used at the maximum diameter or at the maximum diameter diameter adjustment range, is in the example H i , 5V, L o 4V at about 4.5 V.
  • the other level threshold S2 is at minimum diameter setting or used in the example Hi'3V, LO'3V at about 2.5 V.
  • In the signal level evaluation is then only determined whether the signal level is above or below the threshold level S1 or S2 used. If the signal level is above the threshold, it is decided that no weft yarn is present. If it is below the threshold, then decided that the weft is present. Since the respective threshold value is assigned to the set diameter or a certain diameter range, and lies between the received and absent signal levels then obtained, a clear and error-free statement is obtained in each case, with which the metering device controller C the motor M correct can drive.
  • the metering machine controller C includes a microprocessor MP connected to the information transfer line A and receiving the web width information i B from the loom control MC. To the microprocessor MP as the stopper P and the yarn sensor S and the motor M is connected. In solid lines in Fig. 2 For example, the maximum diameter D max and the minimum diameter D min are shown in dashed lines.
  • an indicator R can be provided, for example in the measuring delivery device controller C, in which the microprocessor MP displays the optimum diameter D calculated on the basis of the web width information i B , and also the number G of weft thread turns to be released for the weaving width per shot.
  • an adjustment device T can be provided for thread quality or thread color parameters, which is connected to the microprocessor MP.
  • the microprocessor MP feeds, for example, the display R with a diameter information i D.
  • a level-threshold selector K is provided which even directly in the microprocessor MP , for example, in whose signal evaluation circuits, could be arranged.
  • the at least two different level threshold values S1, S2 are stored in a table Q, for example in the form of voltage values in volts.
  • the level threshold selector K is connected either directly (indicated by dashed lines) to the information transmission link A for the web width information i B via an information transmission path (which could be formed in the microprocessor MP) or, as shown, to the information source.
  • the level threshold selector K either the Webbreiteninformation i B , or the diameter information i D receives, which is also fed to the display R.
  • the information intended for the level threshold selector K could also originate directly from the microprocessor MP, optionally in processed form as select commands.
  • the microprocessor MP itself procures the respectively corresponding to the calculated diameter D level threshold S1 or S2.
  • a parameter set in the setting device T for thread quality or thread color as color information i c in the microprocessor MP and / or the level threshold selector K are given to consider the reflection property of each processed weft thread material in the signal level evaluation over a suitable level threshold to be able to.
  • the information transfer path A 'for the diameter information i D passes either from the microprocessor MP or from the display R to the level threshold selector K, while the information transfer path A "can run from the setting device T to the selector K, either separately, or also via the microprocessor MP.
  • the web width information i B is transmitted to the Meßunter Morris-controller C, which calculates the diameter D to be set and the number G of Schussfadenwindungen to be released and optionally in the display R (the display R could also be housed in the control panel 6 of the loom W). If appropriate, a thread parameter is also set on the setting device T and output as color information. From the staff is now either according to experience or by means of the adjustment 4 of the calculated diameter D set. At the same time, either by means of the web width information i B or the diameter information i D , and optionally with the color information i C , a suitable level threshold value S1 or S2 is set or retrieved. In this way, the measuring delivery device F is then automatically adapted to the current weaving width B, B 'with regard to the weft yarn scanning.
  • more than two different level threshold values may be stored, or in each case a threshold value analogous to the diameter, i. stepless, retrieved or adjusted.
  • the stopper P is placed in the release position, and the weft yarn Y is entered into the shed 5. Shortly before the set number G is reached, the stop is returned to the stop position and the shot is completed. During this time, or possibly only after that, the motor M runs to supplement the thread supply on the storage body 3 again. If the yarn sensor S detects the absence of the weft yarn in the scanning zone Z, then the motor is driven or accelerated. If the presence of the weft yarn in the scanning Z detected, then the motor M is slowed or stopped. The yarn sensor S provides a signal, for example, with a higher absence signal level and, in the presence of the weft yarn, with a lower presence signal level.
  • the level threshold S1 or S2 associated with the diameter D or the weaving width B, B ' is in each case between the absence and presence signal levels H i or L o (H i ', L o ') and is taken into account in the signal level evaluation , That is, the microprocessor MP makes the determination that the weft yarn is absent when the signal level is above the threshold level, and the weft yarn is present when the signal level is below the level threshold. With these findings, the control of the motor M is performed.
  • the thread sensor S could be designed so that it delivers a higher signal level in the presence of the weft thread than in the absence.
  • the thread sensor S could be adjustable in the axial direction of the storage body 3 in the housing extension.
  • the stopping device P is expediently adjustable, for example, in the radial direction in order to be set to an optimum position during a change in diameter.
  • the level-threshold selector K could also be accommodated in the weaving machine control MC or in the control panel 6, and then via the transmission path A to each of a certain weaving width B, B 'associated level threshold value S1 or S2 to the Meßunter réelle Kunststoffung C, so that it is automatically adjusted during the operation of the measuring feeder F and is able to work error-free regardless of the set diameter D.
  • the level threshold S1, S2 respectively adapted to the weaving width could already be processed in the thread sensor S ', which then possibly supplies the presence and absence signals to the microprocessor MP.

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

Abstract

La présente invention concerne un métier à tisser à buses d'air (W) et un système de traitement de fils comprenant au moins un dispositif d'apport de mesure de fil de trame (F), dans lesquels une commande de métier à tisser (MC) et une commande de dispositif d'apport de mesure (C) sont reliées par une voie de transmission d'informations (A) pour au moins la largeur de tissage (B, B'), et des informations de largeur de tissage (iB) transmises peuvent permettre d'obtenir le diamètre de corps de stockage (D) à régler. Un détecteur de fil optoélectronique (S) produit des signaux en fonction de la présence ou de l'absence du fil de trame (Y) dans une zone de détection (Z) sur le corps de stockage (4). La détecteur de fil (S) est un détecteur à réflexion de fil grâce auquel des niveaux de signal de présence et d'absence de fil de trame (HI,, Lo, Hi', Lo') peuvent être produits. A la voie de transmission d'informations (A) est connecté un dispositif de sélection automatique de valeur seuil de niveau (K) qui, pour différentes largeurs de tissage, a au moins deux différentes valeurs seuils de niveau (S1, S2) pour la détermination de niveau de signal. Chaque valeur seuil de niveau (S1, S2) se trouve, pour le diamètre mis en corrélation avec la largeur de tissage réelle (B, B'), entre les niveaux de signal de présence et d'absence respectifs. En conséquence, le dispositif d'apport de mesure est adapté, en fonction de la détection de fil, automatiquement à la largeur de tissage réelle ou au diamètre constaté (D) du corps de stockage.

Claims (6)

  1. Système de traitement de fils comprenant une machine de tissage à jet d'air (W) et au moins un appareil de fourniture et de mesure de fil de trame (F) avec un corps de stockage (3) à diamètre réglable (D) et un dispositif de réglage de diamètre (4), avec une commande de machine de tissage (MC) et une commande d'appareil de fourniture et de mesure (C) qui contient un microprocesseur (MP) et qui est reliée par une ligne de transmission d'informations (A) pour au moins la longueur de trame ou la largeur de tissage (B, B') à la commande de machine de tissage (MC), avec un circuit d'analyse qui est contenu dans la commande d'appareil de fourniture et de mesure (C), pour calculer au moins le diamètre de corps de stockage (D) à régler, à l'aide d'une information de longueur de trame ou de largeur de tissage (iB) transmise, et avec au moins un capteur de fil optoélectronique (S) qui est raccordé au microprocesseur (MP) et qui génère des signaux à partir de la présence ou de l'absence du fil de trame (Y) dans une zone d'exploration (Z) sur le corps de stockage (3), caractérisé en ce que le capteur de fil (S) est constitué par un capteur de réflexion de fil qui réagit, en tenant compte d'une valeur seuil de niveau (S1, S2), à des différences de lumière de réflexion de fil entre le fil de trame (Y) présent ou absent dans la zone d'exploration (Z) et avec lequel des niveaux de signaux de présence et d'absence (Hi, Lo, Hi', Lo') qui deviennent éventuellement plus faibles avec un diamètre (D) qui diminue sont aptes à être générés, en ce qu'un sélecteur automatique de valeur seuil de niveau (K) est raccordé directement ou indirectement à la ligne de transmission d'informations (A), et en ce que le sélecteur de valeur seuil de niveau (K) comporte pour différentes informations de longueur de trame ou de largeur de tissage (iB) au moins deux valeurs seuils de niveau différentes (S1, S2) pour l'analyse de niveaux de signaux, chacune de ces valeurs pour la plage de réglage de diamètre corrélée avec la largeur de tissage (B, B') ou le diamètre du corps de stockage (3) étant située entre les niveaux de signaux de présence et d'absence (Hi, Lo, Hi', Lo').
  2. Système de traitement de fils selon la revendication 1, caractérisé en ce qu'il est prévu un affichage (R) raccordé au microprocesseur (MP) et apte à être activé par celui-ci avec une information de diamètre (iD), pour le diamètre de corps de stockage (D) calculé à l'aide de la longueur de trame ou de la largeur de tissage (B) transmise, et en ce qu'il est également prévu une ligne de transmission (A') pour l'information de diamètre (iD) qui va du microprocesseur (MP) jusqu'au sélecteur de valeur seuil de niveau (K).
  3. Système de traitement de fils selon la revendication 1, caractérisé en ce qu'un dispositif de réglage (T) pour des paramètres de qualité de fil ou de couleur est prévu et est raccordé au microprocesseur (MP) et/ou au sélecteur de valeur seuil de niveau (K).
  4. Système de traitement de fils selon la revendication 1, caractérisé en ce que le sélecteur de valeur seuil de niveau (K) est intégré dans le microprocesseur (MP) ou dans le capteur de fil (S).
  5. Système de traitement de fils selon la revendication 1, caractérisé en ce que les deux valeurs seuils de niveau différentes (S1, S2), ou plus, sont conservées de manière à pouvoir être appelées ou sorties dans un tableau affecté à des largeurs de tissage (B) différentes ou à des diamètres (D) différents, de préférence en vue d'un appel ou d'une sortie par degrés ou en continu.
  6. Procédé pour adapter à la largeur de tissage du moment un appareil de fourniture et de mesure de fil de trame (F) à diamètre de corps de stockage (D) variable, dans un système de traitement de fils comprenant une machine de tissage à jet d'air (W) à largeur de tissage (B, B') variable, étant précisé qu'une commande de machine de tissage (MC) et une commande d'appareil de fourniture et de mesure (C) communiquent par l'intermédiaire d'une ligne de transmission d'informations (A) au moins avec des informations (iB) sur la largeur de tissage du moment, et sur la base de l'information de largeur de tissage (iB) une valeur de réglage de diamètre de corps de stockage est fixée, et qu'au moins un capteur de fil optoélectronique (S) explore dans l'appareil de fourniture et de mesure la réserve de fil de trame sur le corps de stockage (3) et génère des niveaux de signaux de présence et d'absence de fil de trame (Hi, Lo, Hi', Lo') pour la commande d'appareil de fourniture et de mesure (C), caractérisé en ce que le capteur de fil (S) génère les niveaux de signaux de présence et d'absence (Hi, Lo, Hi', Lo') à partir de la lumière réfléchie par le fil de trame (Y), et en ce qu'il est prévu au moins deux valeurs seuils de niveaux (S1, S2) différentes pour l'analyse des niveaux de signaux de présence et d'absence correspondants et la discrimination entre ces niveaux, parmi lesquelles la valeur seuil de niveau (S1 ou S2) en corrélation avec la largeur de tissage (B, B') ou avec le diamètre (D) fixé est automatiquement sélectionnée et utilisée à l'aide, au moins, de l'information de largeur de tissage (iB).
EP04740812A 2003-07-28 2004-07-08 Systeme de traitement de fils et procede d'adaptation Expired - Lifetime EP1648808B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003134339 DE10334339A1 (de) 2003-07-28 2003-07-28 Fadenverarbeitungssystem und Verfahren zur Anpassung
PCT/EP2004/007513 WO2005014454A1 (fr) 2003-07-28 2004-07-08 Systeme de traitement de fils et procede d'adaptation

Publications (2)

Publication Number Publication Date
EP1648808A1 EP1648808A1 (fr) 2006-04-26
EP1648808B1 true EP1648808B1 (fr) 2011-07-06

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EP04740812A Expired - Lifetime EP1648808B1 (fr) 2003-07-28 2004-07-08 Systeme de traitement de fils et procede d'adaptation

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EP (1) EP1648808B1 (fr)
CN (1) CN100475676C (fr)
DE (1) DE10334339A1 (fr)
WO (1) WO2005014454A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103336424A (zh) * 2013-06-15 2013-10-02 常州瑞昇科技有限公司 整纬机双核控制系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3140446B1 (fr) * 2014-05-09 2019-08-28 Picanol Dispositif délivreur de trame

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59106543A (ja) * 1982-12-13 1984-06-20 日産自動車株式会社 断片織機の緯糸供給装置
EP0290380B1 (fr) * 1987-04-24 1991-08-28 GebràœDer Sulzer Aktiengesellschaft Dispositif de stockage de fil de trame avec mesureur de fil automatique pour métier à tisser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103336424A (zh) * 2013-06-15 2013-10-02 常州瑞昇科技有限公司 整纬机双核控制系统

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EP1648808A1 (fr) 2006-04-26
CN100475676C (zh) 2009-04-08
DE10334339A1 (de) 2005-02-24
CN1829649A (zh) 2006-09-06
WO2005014454A1 (fr) 2005-02-17

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