EP1440193B1 - Systeme de traitement de fils - Google Patents

Systeme de traitement de fils Download PDF

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Publication number
EP1440193B1
EP1440193B1 EP02783009A EP02783009A EP1440193B1 EP 1440193 B1 EP1440193 B1 EP 1440193B1 EP 02783009 A EP02783009 A EP 02783009A EP 02783009 A EP02783009 A EP 02783009A EP 1440193 B1 EP1440193 B1 EP 1440193B1
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EP
European Patent Office
Prior art keywords
yarn
tensiometer
processing system
brake
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
EP02783009A
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German (de)
English (en)
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EP1440193A1 (fr
Inventor
Pär JOSEFSSON
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
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Publication of EP1440193A1 publication Critical patent/EP1440193A1/fr
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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

Definitions

  • the invention relates to a yarn processing system according to the preamble of patent claim 1.
  • the nominal thread tension profile For initial setup or after a change to a different thread quality (Style Change), the nominal thread tension profile must be adjusted for the entry cycle.
  • a thread tension nominal profile is selected which ensures an optimum insertion frequency and insertion speed with the fewest yarn breakages possible for the respective yarn quality.
  • the thread tension is affected by many parameters, such as the withdrawal tension from the yarn feeding device, the braking effect of the yarn brake, the nature and function of the entry device of the textile machine, the thread quality, and the like.
  • the resulting thread tension profile and characteristics of the thread are crucial as its friction behavior, diameter, elasticity or density. These parameters require certain settings on, for example, the thread tension affecting braking devices. Deviations from the set yarn tension profile that require compensation may occur over time during operation of the yarn processing system, for example due to different supply spool diameters, fluctuating yarn characteristics and differently wound supply spools.
  • the textile machine should process the thread as fast as possible. With weak threads, the strength of the thread sets a limit. If the machine speed is increased beyond a critical limit, the number of thread breaks increases exponentially. By means of a controlled yarn brake, the highest voltage peaks caused by high insertion speeds can be reduced, so that the voltage remains in particularly critical phases of the entry at low values.
  • a portable tensiometer which is held in the thread path, measures the thread tension, and possibly. Indicates in a laptop.
  • the tensiometer is used for a number of picking cycles representative of adjusting the nominal yarn tension profile to adjust, for example, the take-off tension from the yarn feeder, the brake level or yarn brake timing, and the like. During this adjustment phase yarn breaks or other disturbances can occur, until finally the optimal nominal yarn tension profile is found and established.
  • EP 0 357 975 A discloses a yarn processing system in which a controlled yarn brake is operated by means of a tensiometer permanently placed in the yarn path. Although the permanently operating in its detection position tensiometer would allow Einjust Schlieren an optimal thread tension setpoint profile, but its influence is disadvantageous because of the additional Fadenumlenk- and friction point with weak yarn qualities.
  • EP 0 605 550 A discloses a yarn processing system in which a tensiometer is permanently assigned to a controllable yarn brake and can be switched between a passive position and a detection position. Since the tensiometer is only temporarily switched to the detection position during each entry cycle, namely, only with simultaneous work of the thread brake, no information about the thread tension is available if the thread brake does not brake. The tensiometer can measure, so to speak, only a limited section of the thread tension profile during an insertion cycle. However, to adjust the optimum nominal tension of the thread tension, the development and course of the thread tension over the entire insertion cycle is required.
  • the invention has for its object to provide a yarn processing system of the type mentioned above, which allows for different yarn qualities high insertion speeds with minimal yarn breakage rate.
  • the tensiometer monitors the development and course of the thread tension throughout the insertion cycle.
  • the tensiometer remains in the detection position for a representative number of picking cycles, typically over approximately 50-100 picking cycles, until the optimum thread tension setpoint profile is adjusted by varying the parameters affecting the thread tension which ensures a minimum number of yarn breaks at optimally high picking speed.
  • the tensiometer can remain in the detection position after adjustment to continue to provide permanent information about the thread tension, strong yarn qualities tolerate the additional friction by the tensiometer.
  • the optimum nominal thread tension profile can also be adjusted for weak yarn qualities, possibly with disturbances caused by the tensiometer, which, however, after the tensiometer has been returned to its passive position, at an optimally high picking speed guarantees a minimum thread breakage rate.
  • the short period of time over which the weak thread has to handle the extra friction does not signify a significant reduction in the efficiency of the textile machine.
  • new settings of the parameters can also be made during continuous operation, eg on the controllable thread brake, if, for example, the thread breakage rate should have increased as a result of the above-mentioned influences.
  • the tension measured by the tensiometer in its detection position can be used by means of graphical or numerical representations to manually adjust the brake level of the thread brake.
  • the convertible tensiometer is associated with a thread brake that operates with an adjustable brake level consistent with the picking cycle to change the brake level until the optimum desired line tension profile is found, or a controllable thread brake that varies its braking action during the same picking cycle.
  • the timing and / or the braking level of the controlled yarn brake can be adjusted.
  • the tensiometer is advantageously connected directly to an adjustment device of the thread brake, so that feedback is used in a closed control loop.
  • a computerized control device or brake level adjustment of the thread brake is suitable, which optionally responds to the measured thread tension corrective.
  • the tensiometer or at least the element acting on the thread during measurement can be manually or mechanically converted.
  • a manual change can be made by direct attack on the tensiometer or the element.
  • a mechanical changeover takes place, for example, with the aid of a spring, which automatically switches the tensiometer to the passive position after the representative number of entry cycles triggered by a timer or a program.
  • the tensiometer or the element acting on the thread is connected to a Umstellaktuator, preferably an electromagnet or an electric motor, which receives, for example via a timer or programming, the command to produce the passive position of the tensiometer after the representative number of entry cycles.
  • a Umstellaktuator preferably an electromagnet or an electric motor, which receives, for example via a timer or programming, the command to produce the passive position of the tensiometer after the representative number of entry cycles.
  • the tensiometer has a display device for the measurement results, preferably with graphical and / or numerical representation.
  • the tensiometer is permanently arranged in the thread path, it is expediently connected to the control panel of the textile machine, so that it can not only be changed over from the control panel, but its measurement results can also be recorded there if necessary. It is helpful if the display usually provided in the control panel can also be used to display the measured yarn tension.
  • the tensiometer is switched to the passive position and also provides the correct detection position of the tensiometer.
  • the tensiometer is structurally combined with the thread brake, preferably using at least one Fadenumlenkstelle the thread brake for the measurement.
  • the tensiometer can also be arranged upstream or downstream of a yarn detector, preferably a weft detector of a weaving machine, and is then advantageously even structurally combined with the weft detector, preferably using at least one yarn deflection point of the weft detector for the measurement.
  • the tensiometer can be converted into a plurality of different, eg thread quality-dependent, detection positions, which differ, for example, by their respective thread deflection angles. Because heavy thread qualities require a smaller friction angle than a light thread quality for a correct tension measurement.
  • an electronic measurement evaluation device which has an automatic compensation circuit for the different detection positions in order to compensate the then different parameters, wherein at least one position sensor is provided for the respective detection position, which is connected to the evaluation device.
  • at least one position sensor is provided for the respective detection position, which is connected to the evaluation device.
  • the evaluation electronics can select the correct parameters with the information of the position sensor and ensure correct measurements regardless of the respective detection position.
  • a Tensiometer is expediently permanently provided in each yarn channel and um founded to set the same or even possibly an individual, optimal yarn tension profile for each yarn channel ,
  • the invention is applicable to all types of looms and knitting machines.
  • the advantage is given to a yarn processing system whose textile machine is a rapier or projectile weaving machine, although a jet loom is also suitable.
  • a yarn processing system whose textile machine is a rapier or projectile weaving machine, although a jet loom is also suitable.
  • different machine types may be involved, such as circular knitting machines or flat knitting machines or the like.
  • a yarn processing system S in Fig. 1 comprises at least one yarn feeding device F, which is associated with a channel K1 a textile machine M and the textile machine M delivers a yarn Y.
  • the yarn Y is removed from a yarn package L, cached in the yarn feeding device F on a storage body 1 and entered along a yarn path through an entry device E in the textile machine M.
  • the textile machine M in FIG. 1 is a weaving machine, in particular a projectile or rapier weaving machine, but could also be a jet loom. Alternatively, the weaving machine can also be a knitting machine.
  • a yarn brake B downstream of the same permanent Tensiometer T, downstream of the same optionally a weft detector D and subsequently arranged the entry device E, of which the yarn Y in by a control device CU the weaving machine certain entry cycles are entered intermittently in a shed 8 and struck by a reed, not shown.
  • the control device CU of the loom includes an unspecified control panel with a display G.
  • the storage body 1 of the yarn feeding device is associated with a trigger brake 2, which generates a certain, relatively constant base tension in the yarn Y when deducted.
  • a trigger brake 2 In the case of a jet loom no trigger brake 2 is provided, but a stop device, not shown, which carries out the length measurement of the weft threads.
  • the yarn brake B has an adjustment device 3, with which the brake level (the braking force) can be adjusted to produce in the yarn Y between the entry device E and the yarn brake B a desired yarn tension when deducted.
  • the brake level the braking force
  • stationary thread guide elements 5 are optionally provided.
  • a controlled yarn brake B with a control device 4.
  • the controlled yarn brake B e.g. is activated and deactivated in response to control signals during each enumeration cycle by the control device CU to vary the braking effect during the same enumeration cycle and / or to switch between non-braking and braking phases.
  • the weft detector D registers the movement of the withdrawn yarn Y and generates a disturbance signal if no movement is detected in a phase during which a movement of the yarn Y is to be expected.
  • the insertion device E has a thread selector which selects the thread Y to be inserted from one of possibly several thread channels and assigns it to the entry element which inserts the thread into the shed 8 before it is struck and cut by the reed .
  • the yarn Y is taken at the entry end of the shed by a Bringergreifer and transported approximately to the middle of the shed 8, then handed over to a gripper rapier, and brought by this completely through the shed 8.
  • a projectile weaving machine a projectile is shot through with each weft thread.
  • the entry device E has at least one main nozzle and optionally additional nozzles in the shed 8 in order to register the yarn Y with air jets.
  • the yarn processing system S has downstream of the yarn brake B the permanently installed tensiometer T, which (or its thread Y acting element P) can be switched between a passive position (dashed), in which the yarn Y is not acted upon, and at least one detection position ( in solid lines) in which the yarn Y is deflected and rubbed to measure the yarn tension.
  • the deflection takes place, for example, in relation to stationary Thread guide elements 5.
  • the Umstell Gay is indicated by a double arrow 6.
  • the tensiometer T has a display 7 for the measured voltage, wherein the thread tension can be displayed graphically and / or numerically in shape. Dotted is indicated that the tensiometer T is connected to the control device CU or the control panel of the textile machine. Then, the display G can be shared to indicate the measured voltage, or the input devices in the control panel, to operate and optionally adjust the tensiometer.
  • the tensiometer T can be arranged at various positions, as indicated by the arrows a, b and c.
  • the tensiometer T is used to adjust or establish an optimal nominal yarn tension profile (a tension curve over the entry) for the picking cycles, which ensures the least yarn breakage rate at the optimum entry speed into the textile machine.
  • the nominal yarn tension profile is shown schematically in FIG.
  • the adjustment of a nominal yarn tension profile is carried out, inter alia, during initial startup or after a change of the processed yarn quality, or if the quota of yarn breaks should accumulate during operation of the yarn processing system.
  • the adjustment can be done manually to components of the thread processing system which are decisive for the thread tension, or also automatically in at least one closed loop with feedback.
  • a sequence of entries is carried out, typically 50-100 entries, in order to set the parameters influencing the thread tension profile.
  • the tensiometer T remains in the detection position after the adjustment. He may then optionally be used to control the controllable yarn brake B and the like.
  • the tensiometer T is switched to the passive position after the adjustment phase, so that it no longer exerts any influence on the thread Y.
  • a manually convertible tensiometer T is recognizable, the element P acting on the thread adjustable mounted in a guide 9 and between stops 10 back and forth adjustable, which define the passive position I and a detection position II.
  • a hand lever 11 is provided, which can be performed by hand in the direction of the double arrow 6, the adjustments.
  • the tensiometer could be acted upon by a spring in the direction of the passive position and held by a latch in the detection position.
  • a control device not shown, e.g. a timer or program, release the lock after the representative number of entry cycles required for adjustment so that the tensiometer T is then automatically switched to the passive position.
  • the tensiometer T is connected to an actuator A, which performs the Umstellschulen (double arrow 6).
  • the actuator may be an electromagnet or an electric motor.
  • the tensiometer T or its element E acting on the thread has not only one detection position II, but at least one further detection position III. In the two detection positions II and III different thread deflection angles result.
  • the actuator A can be controlled from the control panel of the weaving machine to set the desired detection position, or directly on the tensiometer T.
  • a timer or a programming Z may be provided, which Changeover after performing the representative number of entry cycles.
  • FIG. 3 shows a control unit C of the tensiometer T in which a measurement result evaluation device 11 (computerized circuit with a microprocessor) is shown. is included, and optionally a compensation device 12, which takes into account the different force triangles in the different detection positions II and III, to still be able to provide correct measurement results.
  • the control device C of the tensiometer T can be connected to at least one position sensor 13, which registers the respectively assumed detection position II or III and informs the control device C accordingly for compensation.
  • the tensiometer T can be structurally combined with the yarn brake B or the detector D.
  • the tensiometer T utilizes a yarn guide element 14 of the detector D as a stationary deflection point relative to the element P.
  • the yarn guide element 14 is, for example, a piezoelectric element that responds to yarn movement.
  • a similar structural combination could also be provided with the thread guide element 5 downstream of the yarn brake B.
  • a rapier weaving machine results in a typical yarn tension profile (similar to a heart curve).
  • Fig. 5 illustrates the yarn tension (in grams g) over a picking cycle (rotation angle of the main shaft of the loom).
  • the thread is under a certain base tension, caused by the trigger brake 2 and the thread brake B (if this is not a controllable thread brake, but has a basic setting of the braking level).
  • a first, relatively sharp voltage increase 16 results.
  • the thread tension in the curve part 17 increases before it decreases again in the delay of the gripper rapier shortly before the transition phase in the middle of the shed.
  • the tensiometer T measures the thread tension downstream of the thread brake B. Based on the measurement result or the measurement results of the representative number of insertion cycles, the trigger brake 2 and the thread brake B and optionally the detector D can be adjusted such that the optimum curve 15 of FIG Fig. 5 shows. These settings can be made manually, or in a closed loop with unspecified automatic control devices, for example, guided via the control device C and / or the control device CU. In this way, the curve 15 is established. Once this is done, the yarn processing system S can begin its normal operation. In the case of a strong thread, which does not tend to break despite the action of the tensiometer, the tensiometer T remains in the detection position.
  • the tensiometer T is adjusted to the passive position, so as not to influence the thread. At most, when irregularities occur or the thread breakage rate increases, or even regularly only for "checking", e.g. at every 100,000th entry, the tensiometer T can then be switched back into or into a detection position to make new adjustments.
  • the illustrated tensiometer operates on the thread deflection principle with the element P, which is set transversely to the yarn path relative to two stationary deflection points 5.
  • other types of tensiometers may also be used, for example with a piezoelectric element or with a pivotable element P.
  • the display 7 may be provided directly on the tensiometer. But it is also conceivable next to the display 7 or alternatively to use only the display in the display G of the control panel of the loom.
  • the trigger brake 2 or the thread brake B can not be highlighted auxiliary devices be provided, which automatically perform the settings in a closed loop, guided by the measurement result of the tensiometer T.

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

Claims (14)

  1. Système (S) de traitement de fil qui présente au moins un appareil (F) de fourniture de fil associé à un canal de fil (K1), une machine textile (M), par exemple un métier à tisser ou une machine à tricoter, un frein de fil (B) au moins réglable dans le parcours du fil entre la machine textile (M) et l'appareil (F) de fourniture de fil et un tensiomètre (T) qui palpe le fil (Y) en aval du frein de fil (B) et qui sert au moins à mesurer la tension (g) du fil, caractérisé en ce que le tensiomètre (T) est disposé en permanence sur le parcours du fil et peut être commuté entre une position passive (I) et au moins une position de détection (II, III), et en ce que le tensiomètre (T) peut être commuté sélectivement depuis la position de détection (II, III) jusque dans la position passive (I) après un nombre de cycles d'insertion qui représente au moins l'ajustement du profil de consigne (15) de la tension du fil.
  2. Système de traitement de fil selon la revendication 1, caractérisé en ce que le tensiomètre commutable (T) est associé à un frein de fil (B) dont le niveau de freinage est constant lors du cycle d'insertion mais ajustable ou à un frein de fil (B) dont le niveau de freinage peut être contrôlé pendant le cycle d'insertion.
  3. Système de traitement de fil selon la revendication 1, caractérisé en ce que le tensiomètre (T) est raccordé à un dispositif d'ajustement (4, G), de préférence un dispositif informatique de commande ou à un réglage du niveau de freinage du frein de fil (B).
  4. Système de traitement de fil selon la revendication 1, caractérisé en ce que le tensiomètre (T) ou au moins un élément (P) du tensiomètre qui peut être utilisé pour la mesure du fil (Y) peuvent être commutés manuellement ou mécaniquement.
  5. Système de traitement de fil selon la revendication 1, caractérisé en ce que le tensiomètre (T) ou au moins un élément (P) du tensiomètre qui peut être utilisé pour la mesure du fil est relié à un actionneur de déplacement (A) et de préférence à un électroaimant ou un moteur électrique.
  6. Système de traitement de fil selon la revendication 1, caractérisé en ce que le tensiomètre (T) présente un dispositif d'affichage (7, G) des résultats de mesure, qui en fournit une représentation de préférence graphique et/ou numérique.
  7. Système de traitement de fil selon la revendication 1, caractérisé en ce que le tensiomètre (T) est raccordé au panneau de commande (G) de la machine textile (M), de préférence à un écran qui y est prévu.
  8. Système de traitement de fil selon la revendication 1, caractérisé en ce que le tensiomètre (T) est raccordé à un dispositif automatique (C) de commande du déplacement dans lequel une horloge (Z) ou un programme de durée de la position de détection (II, III) est de préférence prévu.
  9. Système de traitement de fil selon la revendication 1, caractérisé en ce que le tensiomètre (T) est combiné structurellement au frein de fil (B), de préférence en recourant à au moins un emplacement (5) de renvoi de fil du frein de fil (B) pour la mesure.
  10. Système de traitement de fil selon la revendication 1, caractérisé en ce que le tensiomètre (T) est disposé en amont ou en aval d'un détecteur de fil (D) et de préférence à un détecteur de fil de trame d'un métier à tisser.
  11. Système de traitement de fil selon la revendication 10, caractérisé en ce que le tensiomètre (T) est combiné structurellement au détecteur (D) de fil de trame de préférence en utilisant au moins un emplacement (14, 5) de renvoi de fil du détecteur de fil de trame, pour la mesure.
  12. Système de traitement de fil selon la revendication 1, caractérisé en ce que le tensiomètre (T) peut être commuté en plusieurs positions de détection (II, III) différentes qui dépendent par exemple de la qualité du fil et qui se distinguent de préférence par leur angle de renvoi du fil.
  13. Système de traitement de fil selon la revendication 12, caractérisé en ce qu'un dispositif électronique (C) d'évaluation et de mesure est prévu pour le tensiomètre (T), et présente de préférence un circuit automatique de compensation (12) pour les paramètres de mesure associés aux différentes positions de détection (II, III), en ce qu'au moins un détecteur de position (13) est prévu pour la position de détection (II, III) du tensiomètre (T) ou de l'élément (P) sollicité par le fil lors de la mesure, et en ce que le détecteur de position (13) est raccordé au dispositif d'évaluation (12).
  14. Système de traitement de fil selon la revendication 1, caractérisé en ce que plusieurs canaux de fil (K1) qui sont alimentés par des appareils (F) de fourniture de fil respectifs sont prévus et en ce qu'un tensiomètre (T) est prévu dans chaque canal de fil.
EP02783009A 2001-10-29 2002-10-25 Systeme de traitement de fils Expired - Lifetime EP1440193B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10153326A DE10153326A1 (de) 2001-10-29 2001-10-29 Fadenverarbeitendes System
DE10153326 2001-10-29
PCT/EP2002/011954 WO2003038171A1 (fr) 2001-10-29 2002-10-25 Systeme de traitement de fils

Publications (2)

Publication Number Publication Date
EP1440193A1 EP1440193A1 (fr) 2004-07-28
EP1440193B1 true EP1440193B1 (fr) 2006-12-27

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EP02783009A Expired - Lifetime EP1440193B1 (fr) 2001-10-29 2002-10-25 Systeme de traitement de fils

Country Status (5)

Country Link
US (1) US7073399B2 (fr)
EP (1) EP1440193B1 (fr)
CN (1) CN100425752C (fr)
DE (2) DE10153326A1 (fr)
WO (1) WO2003038171A1 (fr)

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EP1659201B1 (fr) * 2004-11-22 2009-07-08 Sultex AG Méthode de freinage de la trame d'un métier à tisser à jet de fluide
DE502005007653D1 (de) * 2004-11-22 2009-08-20 Sultex Ag Verfahren zum Abbremsen eines Schussfadens einer Düsenwebmaschine
ITMI20051929A1 (it) * 2005-10-13 2007-04-14 Savio Macchine Tessili Spa Dispositivo e procedimento per la misurazione di precisioni della metratura del filo avvolto su una rocca
WO2009025803A1 (fr) 2007-08-20 2009-02-26 Kevin Kremeyer Systèmes de dépôt d'énergie, équipement et procédés permettant de modifier et de commander des ondes de choc et un écoulement supersonique
EP2128318A1 (fr) * 2008-05-30 2009-12-02 Iro Ab Dispositif d'enroulement
ITMI20120062A1 (it) * 2012-01-20 2013-07-21 Comat S R L Telaio ad ago
ITMI20120141A1 (it) * 2012-02-03 2013-08-04 Btsr Int Spa Sistema e metodo per la gestione semplificata dell'alimentazione di una pluralita' di fili a tensione e/o velocita' costante ad una macchina tessile
US10669653B2 (en) * 2015-06-18 2020-06-02 Kevin Kremeyer Directed energy deposition to facilitate high speed applications
ITUB20155266A1 (it) * 2015-10-30 2016-01-30 Roj S R L Freno elettromagnetico pilotato per il controllo della tensione dei fili di trama in macchine tessili
BE1023286B1 (nl) * 2015-11-10 2017-01-20 Gilbos Nv Spanningscompensator
CN106592069B (zh) * 2016-12-30 2018-07-06 吴江市兴业纺织有限公司 一种喷气织机
CN110261029A (zh) * 2019-07-24 2019-09-20 合肥市尚技体育用品有限公司 一种便捷式羽毛球拍磅数检测设备

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Also Published As

Publication number Publication date
WO2003038171A1 (fr) 2003-05-08
DE50209102D1 (de) 2007-02-08
US7073399B2 (en) 2006-07-11
CN1578860A (zh) 2005-02-09
CN100425752C (zh) 2008-10-15
US20050061388A1 (en) 2005-03-24
EP1440193A1 (fr) 2004-07-28
DE10153326A1 (de) 2003-05-08

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