EP0605550B1 - Procede et metier mecanique - Google Patents

Procede et metier mecanique Download PDF

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Publication number
EP0605550B1
EP0605550B1 EP92920145A EP92920145A EP0605550B1 EP 0605550 B1 EP0605550 B1 EP 0605550B1 EP 92920145 A EP92920145 A EP 92920145A EP 92920145 A EP92920145 A EP 92920145A EP 0605550 B1 EP0605550 B1 EP 0605550B1
Authority
EP
European Patent Office
Prior art keywords
weft thread
brake
tension
weft
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.)
Expired - Lifetime
Application number
EP92920145A
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German (de)
English (en)
Other versions
EP0605550A1 (fr
Inventor
Pär JOSEFSSON
Kurt Arne Gunnar Jacobsson
Lars Helge Gottfrid Tholander
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Iro AB
Original Assignee
Iro AB
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Publication date
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Publication of EP0605550A1 publication Critical patent/EP0605550A1/fr
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/26—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/40—Applications of tension indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/20—Sensing or detecting means using electric elements
    • B65H2553/23—Capacitive detectors, e.g. electrode arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/20—Sensing or detecting means using electric elements
    • B65H2553/26—Piezoelectric sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a method of the type specified in the preamble of claim 1 and a weaving machine of the type specified in the preamble of claim 4.
  • a tension sensor and an insertion brake are provided downstream of the weft feeder, the insertion brake being controlled as a function of the weft tension curve sensed by the tension sensor.
  • the tension sensor like the insertion brake, applies friction to the weft thread during the insertion process, which is disadvantageous at today's high insertion speeds and short insertion times, because a friction load on the weft thread also has an undesirable influence on the course of the insertion process and during critical acceleration and high-speed phases Damage to the weft can break.
  • the permanently active tension sensor undesirably applies a frictional load to the weft thread even if it should be transported as freely as possible.
  • Controlled weft insertion brakes for jet looms are known from EP-A1-03 56 380 and EP-A1-01 55 431, which are only temporarily controlled in coordination with the movement of the weft during the insertion process intervene in order to dampen the inevitable increase in tension due to a whip effect when the weft thread is stopped at the end of the insertion process.
  • it is known to slow down the weft at the end of the insertion process if, due to a whip effect resulting from the stopping of the weft, a strong tension peak occurs in the weft, which can break, locally stretch or pull back the weft and bring it into a wavy shape.
  • Braking should start shortly before the occurrence of the tension peak, but only be so intense and last so long that the tension peak is reduced, the weft thread is stretched as far as possible before the time specified for the entry process has elapsed and the free end reaches the compartment end before that Riet strikes.
  • the brake control should therefore be precisely matched to the actual movement of the weft during the entry process.
  • Information about the weft thread movement that can be used to control the braking are, for example, continuity signals which are generated in the weft thread feeder when the thread is drawn off.
  • the time of the occurrence of the tension peak is in addition a useful and precise information for the completion of the insertion process and for controlling the braking for subsequent entry processes, which makes it possible to make a possible difference between the movement of the weft thread from the weft thread feeder and that, for example because of a Trigger balloons, deviating movement of the weft end in the compartment to take into account timely control of the braking.
  • the voltage scan also provides information as to whether the entry process is correct before Has been brought to an end, and previously with a drop in voltage detected at the start of the entry process, that the entry process has started properly and when the weft thread is released by the feeder for triggering.
  • the weft should be braked at the beginning of the entry process for a secure pick-up of the weft end, in the middle phase when the weft end is handed over for a safe transfer and at the end of the entry process for a correct stretching of the weft and a safe release.
  • braking has been carried out continuously up to now, but this leads to sharp increases in tension when the weft thread is accelerated after the take-up and after the transfer.
  • a tension sensor permanently mechanically scanning the tension separately from the entry brake loads the weft thread in the acceleration phases with friction forces which lead to faults and which undesirably overlap with the action of the entry brake.
  • the invention has for its object to provide a method of the type mentioned and a weaving machine and an entry brake, with which the weft insertion processes can be optimized with regard to the loom-dependent predetermined entry duration and protection of the weft.
  • the weft tension is sampled temporarily during an insertion process and only if the friction applied to the weft thread as a result of the scanning has no deleterious influence on the insertion process.
  • the tension sensing is suspended.
  • the voltage sampling can be carried out individually when information about the voltage curve or absolute voltage values is needed.
  • the voltage sensing can be individually adjusted from entry process to entry process, so that the entry processes can be gradually optimized. The method realizes the division of an entry process into critical and uncritical phases for the voltage sensing with regard to optimized entry processes despite the optimization of the Entry processes tapped voltage information.
  • the weaving machine it is provided to reverse the tension sensor in order to carry out the tension sensing only temporarily and then when the weft thread can tolerate this.
  • the tension sensor creates the prerequisite for obtaining information about the entry process and, if necessary, for the control of subsequent entry processes in a phase of the insertion process which is not critical with regard to the frictional influence of the weft thread.
  • a simultaneous braking frictional influence on the weft thread is a prerequisite for the tension sensing.
  • the reaction forces arising from the desired braking are advantageously used simultaneously for voltage sensing.
  • the temporary voltage sampling is extended to the phases before and after the actual entry process, during which no braking takes place.
  • phases of the insertion process which are critical with regard to the frictional influence of the weft thread, the tension sensing is suspended.
  • information is obtained as to when and with what influence on the tension in the weft thread, for example, the weft strikes, the weft thread is cut off, the weft thread is released for entry and starts moving, or whether there is a fault, as a result of deviations can be determined by an at least in principle predictable voltage curve and, if necessary, corrected for later entry processes is used or used to switch off.
  • the voltage sampling is started when a braking operation is also initiated. This is useful if the voltage sensor is disconnected from the entry brake or works separately.
  • a structurally simple and particularly important embodiment emerges from claim 6.
  • a separate tension sensor is saved and an additional friction point on the weft thread is avoided.
  • the friction exerted during braking and / or the resulting reaction forces and / or the extent of the thread deflection are used for the tension sensing.
  • the control of the voltage sensor is easy because it is done by the entry brake.
  • the embodiment according to claim 7 is also particularly expedient because the voltage sensor is small and can be accommodated inexpensively.
  • the tension is sensed directly and where the reaction force of the weft acts.
  • the embodiment according to claim 9 is also particularly expedient detected tension changes in the weft thread make it possible to determine the actual movement, for example of the weft thread end, in the compartment and to adjust the control of the insertion brake to the actual movement sequence.
  • Certain fluctuations in tension occur in relatively equal positions of the weft thread in the compartment, regardless of how fast the insertion process takes place.
  • the continuity signals only approximate the sequence of movements because there are distorting influences in the compartment between the feeder and the movement of the thread end, for example a pull-off balloon.
  • the activation and deactivation of the entry brake is carried out on the basis of the continuity signals, but it is possible by means of the information determined from the voltage curve to at least largely adapt the activation and deactivation to the actual movement sequence.
  • auxiliary functions during the entry process can also be matched to the actual movement sequence, for example the actuation of transport nozzles, a cutting device and the like.
  • the weft insertion brake has a braking element which can be moved by means of a controllable drive from one side of the weft thread against the deflection and deflection of the weft thread from its stretched position to the other side of the weft thread Brake element designed as a weft tension sensor.
  • a weft insertion brake of this type is particularly useful for the aforementioned tasks if the braking element according to claim 11 is designed as the weft tension sensor. Not only is a separate weft tension sensor saved, but it is avoided to create an additional friction point on the weft. In addition, it is achieved in a simple manner that the voltage is only sampled when braking is carried out at the same time. In the case of a controlled entry brake, this simplifies the control of the voltage sensor because it is reliably activated when braking and is reliably deactivated when not braking.
  • the embodiment according to claim 12 is also structurally simple and advantageous.
  • Either the braking element or the deflecting element is designed as the weft tension sensor. Designing the deflection element as the weft tension sensor may result in structural simplifications.
  • the embodiment according to claim 13 is also expedient because a large and effective wrap angle for the weft thread can be set for braking and the reaction forces required for tension sensing can be tapped clearly and precisely.
  • the drive therefore serves both to control the entry brake and to reverse the integrated voltage sensor.
  • a quickly responding, reliable and small-sized voltage sensor is available in the embodiment according to claim 14.
  • the signals to be further processed are calculated, for example, on the basis of calculations from the measured signals and the won at the same time derived from the control thread deflection angle on the tension sensor. This means that the tension in the thread is determined on the basis of the sensor signals and the thread deflection angle on the tension sensor.
  • the control of the entry brake is simple in the embodiment according to claim 15, because the control device is already supplied with the evaluated signals of the sampled voltage curve and e.g. receives information about a possible adjustment of the control program for the entry brake for subsequent entry processes.
  • this axial disc brake is designed as a controllable entry brake and is already provided with the tension sensor, which, however, only applies friction to the weft thread when the entry brake is activated; Weft could be damaged.
  • the following conditions can preferably also be sensed with the voltage sensor according to the invention and used for processing in controlling the entry processes: Detection of the noise in the tension scan as confirmation of the active presence of the weft in the main nozzle; Detection of the voltage peaks in time as time information for the start and end of an entry; Sensing relative thread tensions, Scanning of absolute thread tension values, for example by means of the piezo, elongation or induction element, whereby the extent of the current thread deflection which is known from the position of the control shaft should be taken into account; in the case of double weft insertion, a voltage sensor should be arranged in each channel of the main nozzle as a detector for the end of the respective insertion process.
  • a weaving machine W according to FIG. 1 for example an air-jet weaving machine, has a compartment 1 with a reed 2, air nozzles 3 and an inlet-side main nozzle 4 as a means of transport for inserting a weft thread Y into the compartment 1.
  • the weaving machine W also includes a weft feeder 5, which is equipped with a stop device 6 with an associated stop element 7 and a passage sensor 8. Downstream of the Suppliers 5 are arranged in the weft path a controlled entry brake 9 'and downstream of this a controlled tension sensor 10'.
  • a control device 11 which has a synchronization device 12 in the shown separate arrangement of entry brake 9 'and tension sensor 10', is connected to the individual components of the weaving machine and the feeder in a signal-transmitting, signal-receiving or controlling connection, as is indicated by dashed lines.
  • the insertion brake 9 ' is controlled into the braking position shown in FIG. 1 in order to dampen a disturbing and possibly harmful tension increase or suppress.
  • the entry brake 9 ' is controlled, for example, on the basis of continuity signals from the continuity sensor 8, as is the voltage sensor 10', which is otherwise can be synchronized with the entry brake 9 'with regard to its reversal via the synchronization device 12.
  • the tension sensor 10 temporarily scans the tension curve in the weft thread and transmits to the control device 11 absolute, relative or temporal information about the tension curve.
  • the control device processes signals that can be derived from the sampled voltage curve.
  • the tension sensor 10 ' can also be reversed asynchronously into its scanning position in order to determine the tension curve in the weft thread and information therefrom after braking or after completion of the insertion process and before the beginning of the insertion process up to the start of movement of the weft thread to derive.
  • the tension sensor 10 is in its passive position in the phases of the insertion process and does not apply friction to the weft yarn Y, in which frictional forces interfere with the insertion process or are harmful to the weft thread.
  • the tension sensor 10 is structurally integrated in the entry brake 9, in such a way that an element of the entry brake 9 which deflects the weft thread and acts upon it with friction is simultaneously designed as the tension sensor 10 or is part of the same.
  • the friction required to scan the tension curve is exerted on the weft thread only when the controlled entry brake 10 is in a braking position at the same time.
  • the weft feeder 5 ' is equipped with an insertion brake 9 designed as an axial plate brake 13.
  • a counter plate 15 is attached in a stationary manner on the face side, which has a circular circumference.
  • a brake actuator 16 is coaxially assigned to the counter plate 15, which has a central passage 17 and the distance from the counter plate 15 to the system can be adjusted by means of a controlled drive 18, for example from the control device 11, during an entry process.
  • the weft Y is drawn off from the storage body 14, and thereby moves all around the circumferential edge of the counter plate 15 before it is deflected inwards between the plates 15 and 16 and is axially pulled away through the passage 17 of the brake actuator 16.
  • the braking can be precisely controlled by the deflection and clamping. If the brake actuator 16 is steered far away from the counter-plate 15, then the only mild deflection of the weft thread does not influence the friction during insertion, which is harmful to a rapier weaving machine.
  • the voltage sensor 10 is integrated directly into the entry brake 9, either in the passage 17 or in the peripheral edge of the counter plate 15 (indicated by dashed lines).
  • the vertical axis represents the weft tension and the horizontal axis 2 the time.
  • a single entry process is shown.
  • the curve A shown in solid lines represents the tension curve in the weft thread during the insertion process when using the controlled insertion brake 9 ', 9.
  • the curve part B shown in broken lines represents the tension curve without braking the weft thread. It is about this a typical entry process in a modern weaving machine.
  • the two time periods H represent the phases during an insertion process during which the tension curve in the weft thread is scanned.
  • the period G represents the phase in which the weft is accelerated to its maximum speed and is then transported through the compartment at maximum speed.
  • ta is the time at which the entry brake takes effect.
  • a is the duration of braking.
  • tB represents the end of braking and at the same time the occurrence of an extreme voltage peak that would result without braking at the end of the entry in the voltage curve (curve part B, dashed lines).
  • d is a first voltage increase caused by braking.
  • h is the tension curve before the beginning of the insertion process with the weft thread stationary.
  • b represents the movement absorption and thus the release of the weft thread in the stop device 6 of the feeder 5.
  • K represents a drop in tension when the weft is cut.
  • the curve part g represents an increase in tension when the reed strikes, which is followed by the curve part h.
  • a parallel time axis t is shown below the horizontal axis t, on which the continuity signals occurring during the entry process (for example 1 to 10 for ten drawn turns) are plotted.
  • the first step is to enter without braking in order to determine the point in time tB, which occurs for a thread type in a fixed lateral assignment for each threading process and at the end of the threading process and represents the end of the threading process.
  • tB has the same time interval X from a continuity signal to be selected, e.g. continuity signal No. 5.
  • the time period x1 is found that occurs after the passage signal No.
  • the possibility is created of optimally controlling the entry brake 9 ', 9, ie the feared excessive voltage increase on Effectively reduce the end of the entry process and still ensure that there are largely optimized entry conditions for the entry process within the loom-dependent predetermined period of time, the weft does not break, lies in the compartment and has properly reached the end of the compartment with the free weft end.
  • the additional information about changes in the course of the tension before and after the entry process is also important, so that the tension scanning can also be extended to those time ranges in which the frictional load exerted on the weft during scanning has no disturbing influence.
  • the suspension of the tension sensing by the control of the tension sensor 10 'or 10 during the period G prevents a disturbance of the insertion process or damage to the weft thread.
  • FIG. 5 shows a typical entry process for a rapier loom on the basis of the voltage curve over the time entry or the Webmaschinencard Society of 360 o is shown.
  • the curve parts A drawn in solid line represent the voltage curve when using a controlled entry brake, the voltage curve either via a separate and synchronized voltage sensor 10 '(as in FIG. 1) or by means of a voltage sensor 10 integrated into the entry brake, for example as in FIGS 3, is scanned.
  • the curve parts B shown in broken lines represent the voltage curve in conventional methods in which is continuously braked via the entry process.
  • the dash-dotted curve areas C represent the reduced voltage increases due to the entry brake controlled in the rest position, no voltage sampling being carried out during these phases.
  • Braking is used in a rapier weaving machine because the first rapier only reliably picks up the weft end when a certain retention force acts in the weft, because the first rapier only reliably transfers the weft end to the second rapier when the weft thread is subjected to a retaining force , and because the second looper then finally safely releases the weft end and extends the weft thread, even if a retaining force is effective at the end of the insertion process. In the intermediate acceleration and deceleration phases, braking of the weft thread is unfavorable.
  • the information is important which, for example, indicates from the scanning of the tension curve that the weft thread has begun to move at the tension peak E, is properly cut off when the tension drops K, and the correct time interval of the attack of the strikes when the tension increases Riets from the other voltage fluctuations is confirmed.
  • the control of the weft braking and the scanning of the tension in the weft according to the diagram in FIG. 5 can be achieved particularly advantageously in a rapier weaving machine with the axial plate brake 13 in accordance with FIG
  • the rapier weaving machine is not affected, but it can be controlled so precisely and precisely that the brakes are braked exactly at the important times during the insertion process and the thread tension is then also sensed.
  • the entry brake 9 according to FIGS. 6A, 6B which is particularly useful as an entry brake for jet looms, in particular air jet looms, because it allows the weft thread to pass through without friction in its rest position, has a thread eyelet and a further two on a base body 22 as a stationary deflection element 19 deflection points 20 and 21 designed as pins and spaced apart in the direction of thread travel.
  • a reversible drive motor 24 acts on a shaft 23, which is arranged in the base body 22, for example a stepper motor or a direct current motor, which can be reversed quickly and precisely predeterminably in one direction or the other during an entry process by the control device and which can be precisely reproduced in each case Takes rotational positions.
  • a lever 25 is connected in a rotationally fixed manner to the shaft 23 and carries two brake elements 26, 27 in pin form which can be moved with the lever 25 across the thread path. In the rest position shown, the weft Y is not touched.
  • the braking elements 26 and 27 pivot with multiple deflection of the weft yarn Y between the deflection elements 19, 20 and 21 to brake the weft.
  • a voltage sensor 10 is integrated in the entry brake 9, specifically it is formed, for example, by the braking element 27 or also by the deflecting element 20. 6B, the voltage sensor 10 has a sensing element 29, which according to FIGS.
  • the tension in the weft thread is expediently determined on the basis of the signal of the respective sensing element 29 and then the deflection angle of the thread which can be determined from the rotational position of the shaft 23 or the motor 24.
  • the weft thread Y can pass through smoothly and without contact, and only in the Braking position (a braking position is indicated by dashed lines) brakes the weft Y precisely controllable by multiple deflections.
  • the stationary deflection elements 19 and 21 are designed as thread eyelets.
  • a coaxial tubular body 37 is arranged between them, and its ends define further stationary deflection points 35 and 36.
  • the movable brake elements 27 and 26 are attached to the two ends of the lever 25 indicated by broken lines and are positively connected to the drive 24 via the shaft 23. When the shaft 23 is rotated counterclockwise in FIG. 10, the movable brake elements 27 and 26 are shifted into the dashed positions in which the weft thread is deflected a total of six times and is effectively braked in the process.
  • the movable brake element 27 can be provided with a sensing element 29 and can therefore be designed as a voltage sensor 10.
  • one of the deflection elements 19 or 21 as a voltage sensor or - as indicated - to combine the voltage sensor 29 with the stationary deflection element 35, and to form the voltage sensor 10 there.
  • the tension in the weft Y is sensed when the entry brake 9 has been adjusted to a braking position. If, however, the entry brake 9 is in its rest position, then the weft Y is not sensed for its tension and therefore no harmful friction is exerted on the weft.
  • the precise information, which can be derived from the voltage curve, of the end of the entry process makes it possible to set the time delay between the last safe passage signal and the time at which the entry brake is activated. It is also possible to precisely determine the response time of the entry brake under different conditions via the voltage curve. Efforts have long been made to develop a smooth voltage sensor.
  • the reversible voltage sensor of the type explained here is a smoothly acting voltage sensor, at least in the phases of the entry process, in which the friction would interfere with the entry process.
  • the tension sensing from the start of the entry to the start of movement of the weft provides useful information as to whether the main nozzle has inserted correctly or not.
  • the tuning of the main nozzle can be changed accordingly and based on this information.
  • An oversized surge in voltage at the end of the Entry process allows a conclusion that the main nozzle has not switched off properly, a corresponding correction can be made at any time, taking into account the information of the voltage curve.
  • the brake and thus the tension sensor can be controlled by slavishly utilizing a trig signal from the weaving machine or from the supplier or from a so-called channel-related control device.

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  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

Selon un procédé de commande de l'insertion d'un fil de trame, le fil de trame est temporairement soumis à un frottement entraînant un freinage, et la tension du fil est mécaniquement détectée. Afin d'éviter que le frottement n'exerce une influence perturbatrice ou nuisible sur le fil, la tension du fil n'est détectée que temporairement pendant des phases déterminées de l'insertion, afin de tirer, de la courbe de variation de la tension dans le temps, des informations utiles pour la commande. Dans un métier mécanique, notamment un métier à tuyères, à lance ou à projectiles, un capteur de la tension du fil de trame peut être commuté pendant l'insertion entre une position de détection et une position passive dans laquelle il ne touche pas le fil de trame. De manière appropriée, le capteur de tension est intégré dans le frein d'insertion ou forme lui-même l'élément de freinage.

Claims (15)

  1. Procédé permettant de commander le processus d'insertion d'un fil de trame (Y) dans la foule (1) d'un métier à tisser (W), en particulier d'un métier à jet, à pince ou à projectiles, qui présente un peigne (2) pouvant se déplacer pour le battage et dans laquelle le fil de trame (Y) est activé à partir d'une lisière du tissu pendant le processus d'insertion, est transporté et retenu par la foule dans laquelle le fil de trame est en outre exposé temporairement à une influence retardatrice de friction et dans laquelle la tension du fil de trame est analysée mécaniquement, caractérisé en ce que la tension du fil n'est analysée que temporairement pendant le processus d'insertion.
  2. Procédé selon la revendication 1, caractérisé en ce que la tension du fil est analysée pendant une influence retardatrice de friction.
  3. Procédé selon la revendication 2, caractérisé en ce que la tension du fil est analysée en plus pendant l'enregistrement du mouvement du fil de trame au début du processus d'insertion et/ou à la fin du processus d'insertion pendant le battage du peigne.
  4. Métier à tisser (W), en particulier métier à jet, à pince ou à projectiles présentant au moins un fournisseur (5, 5') de fil de trame disposé sur une lisière du tissu, des moyens de transport (4) pour l'insertion du fil de trame (Y) dans la foule (1), un frein d'insertion (9, 9') destiné au fil de trame et pouvant être réglé entre une position de repos et au moins une position de freinage ainsi qu'un tâteur de tension (10, 10') analysant mécaniquement la tension du fil qui sont tous disposés en aval du fournisseur (5) du fil de trame, dans la voie du fil de trame dans la foule et reliés à un dispositif de commande (11), caractérisé en ce que pendant un processus d'insertion, le tâteur de tension (10, 10') est conçu avec un mouvement réversible pour passer de sa position d'analyse à une position passive pendant laquelle il ne touche pas le fil de trame (Y).
  5. Métier à tisser selon la revendication 4, caractérisé en ce que, pour synchroniser le renversement du tâteur de tension (10') dans la position d'analyse et la commande du frein d'insertion (9') dans la position de freinage, il est prévu au moins un dispositif de synchronisation (12), de préférence dans le dispositif de commande (11) du frein d'insertion.
  6. Métier à tisser selon la revendication 4, caractérisé en ce que le tâteur de tension (10) est intégré dans le frein d'insertion (9) et peut être synchronisé avec celui-ci.
  7. Métier à tisser selon la revendication 6, caractérisé en ce que le tâteur de tension (10) est disposé sur un élément (15, 17 ; 20, 27) du frein d'insertion (9) agissant par friction sur le fil de trame lors du freinage ou est l'élément (20, 27).
  8. Métier à tisser selon les revendications 4 ou 6 et 7, caractérisé en ce qu'une buse principale est prévue pour une double insertion du fil de trame et en ce que pour chaque fil de trame, il est prévu un tâteur de tension à mouvement réversible, intégré de préférence dans le frein d'insertion et conçu comme détecteur de fin d'insertion.
  9. Métier à tisser selon l'une quelconque des revendications 4 à 7, caractérisé en ce que dans le fournisseur du fil de trame (5), il est prévu au moins un capteur de passage (8) du fil de trame relié au dispositif de commande (11) et au moyen duquel des signaux de passage successifs peuvent être générés pendant le processus d'insertion, et en ce que le frein d'insertion (9, 9') peut être commandé par le dispositif de commande (11) sur la base des signaux de passage et des signaux de position du fil de trame (Y) dans la foule (1) dérivés de l'évolution de la tension analysée par le tâteur de tension (10, 10').
  10. Métier à tisser selon la revendication 4, dans lequel le frein d'insertion (9) du fil de trame présente un élément de freinage (26, 27) qui peut être déplacé transversalement au fil de trame à l'aide d'un mécanisme d'entraînement réglable (24) d'un côté du fil de trame (Y) en se plaçant contre le fil de trame et en le déviant de sa position étirée, caractérisé en ce que l'élément de freinage (26, 27) du tendeur (9) réglable est conçu comme tâteur de tension (10) du fil de trame.
  11. Métier à tisser selon la revendication 10, caractérisé en ce qu'au moins un élément de guidage fixe (19, 20, 21 ; 35, 36) est disposé de l'autre côté du fil de trame (Y) opposé à l'élément de freinage (26, 27) du frein d'insertion (10) et est placé dans le sens longitudinal du fil de trame et en ce que l'élément de guidage (19, 20, 21 ; 35, 36) est conçu comme tâteur de tension (9) du fil de trame.
  12. Métier à tisser selon les revendications 10 et 11, caractérisé en ce que le frein d'insertion (9) est conçu comme frein de guidage à effet simple ou double, par exemple, un frein crocodile avec plusieurs éléments de freinage mobiles et de guidage fixes (26, 26, 19, 20, 21 ; 35, 36), un mécanisme d'entraînement réglable (24) pour les éléments de freinage et avec un tâteur de tension (9) intégré pour le fil de trame.
  13. Métier à tisser selon la revendication 12, caractérisé en ce que le tâteur de tension (10) présente au moins un capteur piézoélectrique sensible à la contrainte d'un élément de freinage ou de guidage (26, 27 ; 19, 20, 21, 35, 36) lors de la déviation du fil de trame (Y) ou un capteur capacitif (32).
  14. Métier à tisser selon la revendication 13, caractérisé en ce que le tâteur de tension (10) est relié au dispositif de commande (11) pour l'entraînement du frein d'insertion (9) par l'intermédiaire d'une connexion électrique d'analyse.
  15. Métier à tisser selon la revendication 4, caractérisé en ce que le frein d'insertion (9) présente un contre-plateau fixe (15) avec un contour circulaire ainsi qu'un plateau de freinage (16) à peu près parallèle à ce dernier, coaxial et avec un passage (17) central pour le fil de trame (Y) tournant autour du contre-plateau (15), arrivant ensuite entre les plateaux et se déroulant par le passage (17), en ce que la distance du plateau de freinage (16) jusqu'au placement contre le contre-plateau (15) peut être réglée pendant un processus d'insertion à l'aide d'un mécanisme d'entraînement (18) relié au plateau de freinage (16) et en ce que le tâteur de tension (9) est prévu soit dans le passage (17) du plateau de freinage (16) soit sur le pourtour du contre-plateau (15).
EP92920145A 1991-09-23 1992-09-23 Procede et metier mecanique Expired - Lifetime EP0605550B1 (fr)

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DE4131656A DE4131656A1 (de) 1991-09-23 1991-09-23 Verfahren und webmaschine
DE4131656 1991-09-23
PCT/EP1992/002203 WO1993006278A2 (fr) 1991-09-23 1992-09-23 Procede et metier mecanique

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EP0605550B1 true EP0605550B1 (fr) 1995-12-06

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EP (1) EP0605550B1 (fr)
JP (1) JP3435512B2 (fr)
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WO (1) WO1993006278A2 (fr)

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BE1008058A3 (nl) * 1994-02-02 1996-01-03 Picanol Nv Inrichting voor het klemmen van een inslagdraad.
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IT1284077B1 (it) * 1996-06-27 1998-05-08 Roj Electrotex Nuova Srl Dispositivo frena-filo per macchine tessili
US6253795B1 (en) 1998-03-14 2001-07-03 Stephan Kuster Tensioning apparatus and method for an interlaced thread
GB9817980D0 (en) * 1998-08-18 1998-10-14 Fibrevision Limited Measuring instrument
DE19858682A1 (de) * 1998-12-18 2000-06-21 Iro Patent Ag Baar Fadenverarbeitungssystem und Verfahren zum Liefern von Schußfäden
SE0002813D0 (sv) * 2000-08-02 2000-08-02 Iro Patent Ag Schussfaden-Umlenkbremse und Verfahren zum Steuern des Schussfaden-Eintrags in eine Webmaschine
NL1017378C2 (nl) * 2001-02-16 2002-08-19 Te Strake Bv Werkwijze voor de functiebewaking van een inlooprem.
DE10117879A1 (de) * 2001-04-10 2002-10-17 Iro Patent Ag Baar Fadendetektor
SE523442C2 (sv) * 2001-04-19 2004-04-20 Eltex Sweden Ab Sätt att övervaka tråd
DE10151780C1 (de) * 2001-10-19 2003-05-22 Dornier Gmbh Lindauer Verfahren und Vorrichtung zur Beeinflussung der Fadenbremskraft einer zwischen einem Garnvorratssystem und einem Fadenspeicher einer Webmaschine angeordneten Schussfadenbremse
DE10153326A1 (de) * 2001-10-29 2003-05-08 Iropa Ag Fadenverarbeitendes System
DE10210911A1 (de) * 2002-03-04 2003-09-18 Picanol Nv Vorrichtung zum Erfassen und/oder Einstellen einer Zugkraft in einem Faden
DE10333292A1 (de) * 2003-07-22 2005-02-10 Iropa Ag Faden-Verarbeitungssystem und Faden-Tensiometer
FR2864555B1 (fr) 2003-12-24 2006-01-27 Staubli Lyon Procede de controle de la tension d'alimentation d'au moins un fil de trame, dispositif d'alimentation en fil de trame et metier a tisser equipe d'un tel dispositif
DE102005011841A1 (de) * 2005-03-15 2006-09-21 Iro Ab Fadenverarbeitungssystem und gesteuerte Fadenbremse
US8960596B2 (en) 2007-08-20 2015-02-24 Kevin Kremeyer Energy-deposition systems, equipment and method for modifying and controlling shock waves and supersonic flow
EP3456672B1 (fr) * 2012-01-24 2021-07-07 NIKE Innovate C.V. Système de tissage comprenant un épisseur de tissage intermittent
US10669653B2 (en) * 2015-06-18 2020-06-02 Kevin Kremeyer Directed energy deposition to facilitate high speed applications
KR102221404B1 (ko) 2019-10-11 2021-03-02 안기영 직기 실 피더 릴의 직립형 실 가이드 마모방지용 커버의 제조방법 및 직기 실 피더 릴의 직립형 실 가이드 마모방지용 커버

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Publication number Publication date
EP0605550A1 (fr) 1994-07-13
WO1993006278A2 (fr) 1993-04-01
CZ283142B6 (cs) 1998-01-14
DE59204624D1 (de) 1996-01-18
CZ64894A3 (en) 1994-08-17
WO1993006278A3 (fr) 1993-05-13
DE4131656A1 (de) 1993-03-25
KR100283310B1 (ko) 2001-03-02
JPH07502078A (ja) 1995-03-02
US5462094A (en) 1995-10-31
JP3435512B2 (ja) 2003-08-11

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