EP2419554B1 - Method and device for processing threads by double twisting or direct cabling - Google Patents

Method and device for processing threads by double twisting or direct cabling Download PDF

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Publication number
EP2419554B1
EP2419554B1 EP10723244A EP10723244A EP2419554B1 EP 2419554 B1 EP2419554 B1 EP 2419554B1 EP 10723244 A EP10723244 A EP 10723244A EP 10723244 A EP10723244 A EP 10723244A EP 2419554 B1 EP2419554 B1 EP 2419554B1
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EP
European Patent Office
Prior art keywords
balloon
maximum diameter
thread
speed
spindle
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Application number
EP10723244A
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German (de)
French (fr)
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EP2419554A1 (en
Inventor
Carlos Matas
Alain Bonnefoy
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Staeubli Verdol SA
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Swisstex France SAS
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Publication of EP2419554A1 publication Critical patent/EP2419554A1/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • D02G3/28—Doubled, plied, or cabled threads
    • D02G3/285—Doubled, plied, or cabled threads one yarn running over the feeding spool of another yarn
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/10—Spinning or twisting machines in which the product is wound-up continuously for imparting multiple twist, e.g. two-for-one twisting
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/10—Spinning or twisting machines in which the product is wound-up continuously for imparting multiple twist, e.g. two-for-one twisting
    • D01H1/101—Spinning or twisting machines in which the product is wound-up continuously for imparting multiple twist, e.g. two-for-one twisting in which multiple twist is imparted at the take-up stations
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/86—Multiple-twist arrangements, e.g. two-for-one twisting devices ; Threading of yarn; Devices in hollow spindles for imparting false twist

Definitions

  • the invention relates to the technical sector of textile thread processing machines.
  • machines for transforming the yarns by twisting on themselves or by winding on one another based on the rotation of a spindle the twisting or winding being regulated by the ratio between the speed of rotation. the spindle and the speed of advancement of the son (s).
  • the invention relates more particularly to methods for producing yarns resulting from the assembly by twisting, cabling or wrapping of a plurality of yarns of which at least one of the yarns rotated by the spindle, revolves around a member forming around from the latter a "balloon".
  • a member forming around from the latter a "balloon”.
  • wire F
  • balloon the trajectory adopted by the wire in its rotational movement around an organ or the space delimited by this trajectory when the wire rotates.
  • the wire (F) is rotated by means of a pin (3), into which it enters through an axial channel (2) and emerges through a radial channel (4) to join a guide element (10 or 14), fixed or rotating at the same speed as the spindle.
  • a guide element (10 or 14) fixed or rotating at the same speed as the spindle.
  • the wire (F) adopts, in its rotation, a trajectory delimiting a volume of revolution which is designated by "balloon" (6). ).
  • the system is equipped with means known to those skilled in the art such as brakes, capstans, issuers ... (1, 8) able to advance the wire (F) at a predetermined speed, and the reeling and / or the return under adjustable and / or controlled voltages.
  • the problem that the invention proposes to solve is to form a balloon (6) of optimized and stable shape.
  • the radial channel (4) of the spindle (3) opens out on a cylindrical or conical part (5) on which the thread (F) wraps before leaving it to form the balloon (6), by adopting a curved trajectory .
  • the cylindrical or conical portion (5) designated by the skilled person by the term "reserve” or “store”, contributes to ensuring the stability of the balloon (6).
  • a first disadvantage of this solution is that the adjustment of the balance must be done for each type or title of wire and each speed of production.
  • Licences GB982865 , GB1132892 or DE3130614 suggest ways to solve this problem, but not satisfactorily.
  • a second disadvantage of such a solution is that, for a determined volume to accommodate the coil (11) and its unwinding or winding system, the toroidal or ogival trunk type of the balloon (6) determined by the curvilinear trajectory of the wire (F) imposes an external diameter and a high volume, and consequently centrifugal forces, voltages, aerodynamic losses, high energy consumption and bulk.
  • the wire (F) does not take a curvilinear shape under the effect of the centrifugal force, it is kept under a high tension, for example by means of the drive device (1) arranged upstream of the inlet of the spindle acting as a brake.
  • the space delimited by the rotating wire (F) has a shape close to a cylinder which is more advantageous.
  • the arms or disks carrying the wire guide elements (F) reach a diameter substantially equal to that of the balloon, which creates mechanical stresses and high energy consumption.
  • the invention aims to remedy these disadvantages.
  • the invention relates to a method of transforming son by double twisting or direct wiring in which at least one of the threads is rotated by means of a spindle and forms a balloon around a pot or a stationary cradle containing a winding or winding system, and two yarn guiding elements one upstream, the other downstream of the balloon and at least one of which is in the form of an extended radial channel in an arm or disk rotated integrally with the spindle, the wire passing from one to the other of these two elements.
  • the wire which forms the balloon is guided by the radial channel-shaped guide element (s) to a diameter substantially smaller than the maximum diameter of the balloon.
  • the end of the radial channel, from which the wire forms the balloon without winding on a reserve is located at a diameter of between 40% and 80% of the maximum diameter of the balloon.
  • the speed of production is variable, and at least one of the two wire drive systems is driven to obtain a speed which determines, in relation to the speed of rotation of the spindle, the torsion, in number of revolutions per meter, conferred on the thread by the process.
  • Positive or negative corrections of velocities applied to the drive system (s) to maintain the diameter of the balloon at a set value or between two parametric min / max values are calculated from the measurement of the representative magnitude of the diameter averaged over a time representing several turns of the spindle.
  • the positive or negative corrections of speeds applied to the drive system (s) to maintain the diameter of the balloon at a set value or between two set minimum / maximum values are between 0% and 3% of the speed.
  • the positive or negative corrections are made in a fixed increment between 0% and 3% of the speed.
  • the positive or negative corrections are proportional to the difference between the measured value and the reference value representative of the balloon diameter, and capped at a fixed value between 0% and 3% of the speed.
  • maximum diameter (D) of the balloon (6) or “maximum diameter representative value” (D) of the balloon means the maximum diameter, or any diameter measured or evaluated in the zone where it is close to its maximum value, or any value correlated with this diameter.
  • the end of the radial channel (4, 14), from which the wire (F) forms the balloon (6) without winding on a reserve is located on a diameter of between 40% and 80% of the maximum diameter (D) of said balloon (6).
  • the pot or the cradle (7) which contains the unwinding or winding device (12, 13) of the coil (11) is surrounded by one or more coaxial rings (15) with the spindle, used to guide the thread (F), as long as the spindle production speed is not reached and the balloon (6) has not reached its shape and its nominal diameter under the effect of the force centrifugal.
  • the outer surface of said rings is polished and / or surface-treated to allow the yarn (F) to slide by minimizing friction and abrasion during the acceleration and deceleration phases.
  • one of the two wire drive systems (1 or 8) is driven to obtain a speed ( V1 or V2) which determines, in relation to the rotational speed (N) of the spindle (3), the torsion, in number of revolutions per meter, given to the thread (F) by the method.
  • This constant speed can be obtained, for example, by a variable speed drive (23 or 24) performing closed-loop servo of the speed on a constant setpoint.
  • the speed of the second drive system (1 or 8) of the wire (F) should be exactly equal to that of the first, so that the length of wire (F) between the two drive systems (1 and 8) are constant.
  • the speed (V1 or V2) of the second drive system (1 or 8) at an adjustable speed.
  • This adjustable speed can be obtained, for example by a variable speed drive (23 or 24) performing a closed loop control of the speed on an adjustable setpoint.
  • the drive system (1) arranged upstream of the balloon (6), is at a speed ( V1) while the drive system (8) arranged downstream of the balloon (6) is driven at an adjustable speed (V2).
  • V1 the drive system (8) arranged downstream of the balloon (6) is driven at an adjustable speed (V2).
  • V2 the speed of the drive system (8) disposed downstream of the balloon ( 6) is increased, and when the magnitude representative of the maximum diameter (D) of the balloon (6) is less than the setpoint value and / or the minimum parameterized value, said speed (V2) is decreased.
  • the drive system (8) disposed downstream of the balloon (6) is at fixed speed (V2), and the drive system (1) arranged upstream of the balloon (6) is driven at an adjustable speed (V1).
  • V2 fixed speed
  • V1 adjustable speed
  • the speed (V1) of the drive system (1) disposed upstream of the balloon ( 6) is decreased, and when the magnitude representative of the maximum diameter (D) of the balloon (6) is less than the setpoint value and / or the parameterized minimum value, said speed (V1) is increased.
  • the speed of production is variable, and at least one of the two drive systems (1 or 8) of the wire (F) is controlled to obtain a speed (V1 or V2) which determines, in relation to the rotational speed (N) of the spindle (3), the torsion, in number of revolutions per meter, imparted to the thread by the method.
  • the positive or negative corrections of speeds (V1 or V2) applied to the drive system (s) (1 and / or 8) for maintaining the diameter (D) of the flask (6) at a set point or between two parameterized minimum / maximum values are established by comparison between the measured value of the quantity representative of the diameter (D) of the flask (6) and the setpoint and / or the minimum and maximum values. Due to the flexible and elastic nature of the yarn (F) and the fact that the instantaneous shape of the balloon (6) results from an equilibrium between the tensions, the aerodynamic forces and the centrifugal force, the maximum diameter (D) is subject to instantaneous variations or instabilities that are not representative of a drift.
  • the invention also relates to a device for twisting or wiring wires by means of a pin (3), at least one of the wires being rotated to form a balloon (6) around a pot or a fixed cradle (7).
  • the torque or power absorbed by the spindle (3) to rotate it increases sharply when the maximum diameter (D) of the balloon (6) increases and so that the measurement of this power, this torque, or the current absorbed by the motor driving the pin provides a magnitude representative of the maximum diameter (D).
  • the maximum diameter setpoint (D) or the minimum / maximum values to be obtained are converted into a setpoint or minimum / maximum value of power, torque or voltage current valid for a type and a wire title and for a speed of brooch.
  • the direct measurement of the diameter (D) of the balloon (6) can also be carried out by optical means.
  • the Figures 5 and 6 show an exemplary embodiment of such a measurement by means of a device composed of at least two "optical barrier” (17), composed of a light source (18) and a photosensitive detector (19) between which a light beam is established, the interruption of which is detected by the passage of the wire (F) from the balloon (6).
  • the two "optical barriers” are positioned so that one is cut when the balloon reaches the minimum diameter and the other the maximum diameter targeted.
  • a logical treatment of the output of the two optical barriers indicates whether the diameter (D) of the balloon is less than the minimum, in the minimum / maximum values, or greater than the maximum value targeted.
  • the figure 7 shows an exemplary embodiment of such a measurement by means of a device consisting of a linear or matrix CCD type optical sensor (20) associated with a ray-shaped light source (21) (for example LED or laser) .
  • a ray-shaped light source (21) for example LED or laser
  • the light ray is directed radially towards the axis of the spindle in line with the zone where the diameter of the balloon (6) is maximum, when the wire intersects said radius, it is emitted by reflection a light signal captured by the sensor CCD, a treatment locates the point of emission (22) along the axis parallel to the radius, which is representative of the diameter of the balloon at this point.
  • An alternative embodiment by means of a matrix CCD type optical sensor associated with a stroboscopic light source synchronized with the rotation of the spindle, makes it possible to capture the image in two dimensions and therefore the shape of the wire (F) forming the balloon (6) when illuminated by lightning, and to deduce the diameter (D).
  • the measurement of a magnitude representative of the diameter of the balloon can also be evaluated by means of an acoustic sensor disposed near the balloon (6). Due to its rotation in the air, the wire (F) generates an aerodynamic pressure wave detectable by a nearby acoustic sensor such as a microphone. The intensity of the signal detects, for a speed of rotation and a given type of wire, increases strongly when the distance between the balloon and the sensor decreases and therefore provides a magnitude representative of the diameter of the balloon. According to this means, the diameter setpoint (D) or the minimum / maximum values to be obtained are converted into a setpoint or minimum / maximum value of the intensity of the acoustic wave, valid for a type and a title of wire and for a spindle speed.
  • the measurement of a magnitude representative of the diameter of the balloon can also be evaluated by means of a force or vibration sensor, associated with a mechanical element arranged tangentially on the surface of the balloon (6). Due to its rotation in the air, the wire (F) creates friction or impact on the element a force or vibration detectable by the sensor. The intensity of the detected signal, for a given speed of rotation and a given type of wire, increases strongly when the trajectory of the balloon interferes with the mechanical element. Since the mechanical element is arranged in a position tangent to the minimum target diameter, the diameter setpoint (D) or the minimum / maximum values to be obtained are converted into a minimum / maximum value value value of the intensity of the force or vibration. detected, valid for a type and a wire title and for a spindle speed.
  • the advantages are apparent in the description.
  • the invention proposes a simple and reliable solution for forming a stable balloon, in particular for double-twist or direct-wiring processes, by using means for guiding the wire of reduced diameter, while offering a particularly advantageous volume in the balloon. This results on the one hand a significantly reduced power consumption, and on the other hand a voltage in the wire in the balloon much lower, compared to conventional methods.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
  • Toys (AREA)

Description

L'invention se rattache au secteur technique des machines de transformation de fils textiles.The invention relates to the technical sector of textile thread processing machines.

On peut citer par exemple les machines de transformation des fils par torsion sur eux-mêmes ou par enroulement les uns sur les autres basées sur la rotation d'une broche, la torsion ou l'enroulement étant réglé par le rapport entre la vitesse de rotation de la broche et la vitesse d'avancement du ou des fils.There may be mentioned, for example, machines for transforming the yarns by twisting on themselves or by winding on one another based on the rotation of a spindle, the twisting or winding being regulated by the ratio between the speed of rotation. the spindle and the speed of advancement of the son (s).

L'invention concerne plus particulièrement les procédés de production de fils résultant de l'assemblage par torsion, câblage ou guipage de plusieurs fils dont au moins l'un des fils mis en rotation par la broche, tourne autour d'un organe en formant autour de ce dernier un « ballon ». Par simplification, dans ce qui suit, on désignera par « fil » (F) un fil simple ou plusieurs fils assemblés préalablement. et par « ballon » la trajectoire adoptée par le fil dans son mouvement de rotation autour d'un organe ou l'espace délimité par cette trajectoire lorsque le fil tourne.The invention relates more particularly to methods for producing yarns resulting from the assembly by twisting, cabling or wrapping of a plurality of yarns of which at least one of the yarns rotated by the spindle, revolves around a member forming around from the latter a "balloon". For simplicity, in what follows, will be designated by "wire" (F) a single wire or several son previously assembled. and by "balloon" the trajectory adopted by the wire in its rotational movement around an organ or the space delimited by this trajectory when the wire rotates.

L'invention concerne plus particulièrement :

  • Les systèmes de double torsion ou de câblage direct, tels qu'illustrés figure 1, pour lesquels le ballon (6) entoure un pot ou berceau fixe (7) à l'intérieur duquel est disposé une ou des bobines alimentaires du fil (11) à transformer.
  • Les systèmes d'assemblage par double torsion et renvidage, tels qu'illustrés figure 2, désignés par « broches renvideuses » selon lesquels le ballon (6) tourne autour d'un pot ou berceau fixe (7) à l'intérieur duquel est disposé un système de renvidage (12, 13) du fil transformé sur une bobine (11). Voir. p. ex. US- A-2 869 314 , US-A- 2 731 785 et CA-A-763 744 .
The invention more particularly relates to:
  • Double twist or direct wiring systems, as illustrated figure 1 , for which the balloon (6) surrounds a fixed pot or cradle (7) inside which is disposed one or more feed bobbins of the yarn (11) to be transformed.
  • Double twist and reel assembly systems, as illustrated figure 2 , referred to as "winder pins" according to which the balloon (6) rotates around a fixed pot or cradle (7) to inside which is disposed a winding system (12, 13) of the transformed yarn on a reel (11). See. p. ex. US-A-2,869,314 , US-A-2,731,785 and CA-A-763,744 .

Dans les deux cas, le fil (F) est mis en rotation au moyen d'une broche (3), dans laquelle il rentre par un canal axial (2) et ressort par un canal radial (4) pour rejoindre un élément de guidage (10 ou 14), fixe ou tournant à la même vitesse que la broche. Sous les effets combinés de la force centrifuge, de sa tension et de la résistance de l'air, le fil (F) adopte, dans sa rotation, une trajectoire délimitant un volume de révolution que l'on désigne par « ballon » (6).In both cases, the wire (F) is rotated by means of a pin (3), into which it enters through an axial channel (2) and emerges through a radial channel (4) to join a guide element (10 or 14), fixed or rotating at the same speed as the spindle. Under the combined effects of the centrifugal force, its tension and the resistance of the air, the wire (F) adopts, in its rotation, a trajectory delimiting a volume of revolution which is designated by "balloon" (6). ).

Dans tous les cas, le système est équipé de moyens connus par l'homme de métier tel des freins, cabestans, délivreurs... (1, 8) aptes à le faire avancer le fil (F) à une vitesse déterminée, et à le dévider et/ou le renvider sous des tensions réglables et/ou contrôlées.In all cases, the system is equipped with means known to those skilled in the art such as brakes, capstans, issuers ... (1, 8) able to advance the wire (F) at a predetermined speed, and the reeling and / or the return under adjustable and / or controlled voltages.

Le problème que se propose de résoudre l'invention est de former un ballon (6) de forme optimisée et stable.The problem that the invention proposes to solve is to form a balloon (6) of optimized and stable shape.

Selon la forme la plus courante de réalisation des procédés, comme cela est illustré figure 1, le canal radial (4) de la broche (3) débouche sur une partie (5) cylindrique ou conique sur laquelle le fil (F) s'enroule avant de la quitter pour former le ballon (6), en adoptant une trajectoire incurvée. La partie cylindrique ou conique (5), désignée par l'homme de métier par le terme de « réserve » ou « magasin », contribue à assurer la stabilité du ballon (6).According to the most common form of realization of the processes, as illustrated figure 1 , the radial channel (4) of the spindle (3) opens out on a cylindrical or conical part (5) on which the thread (F) wraps before leaving it to form the balloon (6), by adopting a curved trajectory . The cylindrical or conical portion (5), designated by the skilled person by the term "reserve" or "store", contributes to ensuring the stability of the balloon (6).

Un premier désavantage de cette solution est que le réglage de l'équilibre doit être fait pour chaque type ou titre de fil et chaque vitesse de production. Les brevets GB982865 , GB1132892 ou DE3130614 proposent des moyens de résoudre ce problème, sans y parvenir de façon satisfaisant.A first disadvantage of this solution is that the adjustment of the balance must be done for each type or title of wire and each speed of production. Licences GB982865 , GB1132892 or DE3130614 suggest ways to solve this problem, but not satisfactorily.

Un deuxième désavantage d'une telle solution est que, pour un volume déterminé pour y loger la bobine (11) et son système de dévidage ou de renvidage, la forme de type tronc toroïdale ou ogivale du ballon (6) déterminé par la trajectoire curviligne du fil (F), impose un diamètre extérieur et un volume élevé, et par conséquent des forces centrifuges, des tensions, des pertes aérodynamiques, une consommation d'énergie et un encombrement élevés.A second disadvantage of such a solution is that, for a determined volume to accommodate the coil (11) and its unwinding or winding system, the toroidal or ogival trunk type of the balloon (6) determined by the curvilinear trajectory of the wire (F) imposes an external diameter and a high volume, and consequently centrifugal forces, voltages, aerodynamic losses, high energy consumption and bulk.

Pour les broches renvideuses telles qu'illustrées dans la figure 2, pour lesquelles le volume du système de renvidage (12, 13) à loger dans le ballon (6) est élevé, il a été proposé de guider le ballon (6) entre des anneaux ou des surfaces cylindriques telles qu'illustrée dans les brevets US2487838 ou GB948845 , mais un tel système endommage le fil par friction à haute vitesse. Il a aussi été proposé, de guider le fil (F) par des canaux radiaux (4, 14) se prolongeant dans des bras ou des disques, placés de part et d'autre du système de renvidage (12, 13), lesquels bras étant mis en rotation à la même vitesse, et le fil (F) passant d'un bras à l'autre d'une façon sensiblement rectiligne, sans s'enrouler sur une « réserve ». Pour que le fil (F) ne prenne pas une forme curviligne sous l'effet de la force centrifuge, il est maintenu sous une tension élevée, par exemple grâce au dispositif d'entraînement (1) disposés en amont de l'entrée de la broche agissant en frein. Il en résulte que l'espace délimité par le fil (F) en rotation a une forme proche d'un cylindre qui est plus avantageuse. Mais une telle solution impose que les bras ou disques portant les éléments de guidage du fil (F) atteignent un diamètre sensiblement égal à celui du ballon, ce qui crée des contraintes mécaniques et une consommation d'énergie élevée. De plus, il est nécessaire d'appliquer au fil une tension élevée qui tend à l'endommager.For the broaching pins as illustrated in figure 2 , for which the volume of the winding system (12, 13) to be accommodated in the balloon (6) is high, it has been proposed to guide the balloon (6) between rings or cylindrical surfaces as illustrated in the patents US2487838 or GB948845 but such a system damages the wire by friction at high speed. It has also been proposed to guide the wire (F) by radial channels (4, 14) extending in arms or discs, placed on either side of the winding system (12, 13), which arms being rotated at the same speed, and the wire (F) passing from one arm to the other in a substantially rectilinear manner, without winding on a "reserve". So that the wire (F) does not take a curvilinear shape under the effect of the centrifugal force, it is kept under a high tension, for example by means of the drive device (1) arranged upstream of the inlet of the spindle acting as a brake. As a result, the space delimited by the rotating wire (F) has a shape close to a cylinder which is more advantageous. But such a solution requires that the arms or disks carrying the wire guide elements (F) reach a diameter substantially equal to that of the balloon, which creates mechanical stresses and high energy consumption. In addition, it is necessary to apply to the wire a high voltage which tends to damage it.

L'invention à pour but de remédier à ces inconvénients.The invention aims to remedy these disadvantages.

L'invention porte selon la revendication 1 sur un procédé de transformation de fils par double torsion ou câblage direct dans lequel au moins un des fils est mis en rotation au moyen d'une broche et forme un ballon autour d'un pot ou d'un berceau fixe contenant un système de dévidage ou de renvidage, et deux éléments de guidage du fil l'un en amont, l'autre en aval du ballon et dont au moins un est en forme de canal radial prolongé dans un bras ou un disque mis en rotation solidairement avec la broche, le fil passant de l'un à l'autre de ces deux éléments.According to claim 1, the invention relates to a method of transforming son by double twisting or direct wiring in which at least one of the threads is rotated by means of a spindle and forms a balloon around a pot or a stationary cradle containing a winding or winding system, and two yarn guiding elements one upstream, the other downstream of the balloon and at least one of which is in the form of an extended radial channel in an arm or disk rotated integrally with the spindle, the wire passing from one to the other of these two elements.

Selon l'invention :

  • on forme le ballon en adoptant une trajectoire curviligne, sans s'enrouler sur une réserve ;
  • on entraîne positivement le fil par deux systèmes d'entraînement à vitesse contrôlée, l'un en amont et l'autre en aval du ballon,
  • en dehors des phases de démarrages et d'arrêt, la vitesse de production est variable, on ajuste en permanence la vitesse de l'un au moins des deux systèmes d'entraînement du fil pour maintenir le diamètre du ballon à une valeur de consigne ou entre deux valeurs minimale / maximale paramétrées.
According to the invention:
  • the ball is formed by adopting a curvilinear trajectory, without wrapping itself on a reserve;
  • the yarn is positively driven by two controlled-speed drive systems, one upstream and the other downstream of the balloon,
  • outside of the start and stop phases, the speed of production is variable, the speed of at least one of the two wire drive systems is continuously adjusted to maintain the diameter of the balloon at a set value or between two parameterized minimum / maximum values.

Selon l'invention, le fil qui forme le ballon est guidé par le (ou les) élément(s) de guidage en forme de canal radial jusqu'à un diamètre sensiblement inférieur au diamètre maximal du ballon. De préférence, l'extrémité du canal radial, à partir duquel le fil forme le ballon sans s'enrouler sur une réserve est située à un diamètre compris entre 40% et 80% du diamètre maximal du ballon.According to the invention, the wire which forms the balloon is guided by the radial channel-shaped guide element (s) to a diameter substantially smaller than the maximum diameter of the balloon. Preferably, the end of the radial channel, from which the wire forms the balloon without winding on a reserve is located at a diameter of between 40% and 80% of the maximum diameter of the balloon.

Selon l'invention, en dehors des phases de démarrage et d'arrêt, la vitesse de production est variable, et au moins l'un des deux systèmes d'entraînement du fil est piloté pour obtenir une vitesse qui détermine, en rapport avec la vitesse de rotation de la broche, la torsion, en nombre de tours par mètre, conféré au fil par le procédé.According to the invention, apart from the start and stop phases, the speed of production is variable, and at least one of the two wire drive systems is driven to obtain a speed which determines, in relation to the speed of rotation of the spindle, the torsion, in number of revolutions per meter, conferred on the thread by the process.

Le système d'entraînement disposé en amont du ballon et le système d'entraînement disposé en aval du ballon sont pilotés à des vitesses ajustables, telles que la valeur relative de la différence « vitesse du système placé en aval moins vitesse du système placé en amont »:

  • augmente lorsque la grandeur représentative du diamètre maximal du ballon est supérieure à la valeur de consigne et/ou à la valeur maximale paramétrée;
  • diminue lorsque la grandeur représentative du diamètre maximal du ballon est inférieure à la valeur de consigne et/ou à la valeur minimale paramétrée.
The drive system arranged upstream of the balloon and the drive system disposed downstream of the balloon are driven at adjustable speeds, such that the relative value of the difference "speed of the system placed downstream less speed of the system placed upstream "
  • increases when the magnitude representative of the maximum diameter of the balloon is greater than the setpoint value and / or the maximum value parameterized;
  • decreases when the magnitude representative of the maximum diameter of the flask is lower than the set value and / or the parameterized minimum value.

Les corrections positives ou négatives de vitesses appliquées au(x) système(s) d'entraînement pour maintenir le diamètre du ballon à une valeur de consigne ou entre deux valeurs mini / maxi paramétrées sont calculées à partir de la mesure de la grandeur représentative du diamètre moyennée sur un temps représentant plusieurs tours de la broche.Positive or negative corrections of velocities applied to the drive system (s) to maintain the diameter of the balloon at a set value or between two parametric min / max values are calculated from the measurement of the representative magnitude of the diameter averaged over a time representing several turns of the spindle.

Selon un perfectionnement de l'invention, en dehors des phases de démarrage et d'arrêt, les corrections positives ou négatives de vitesses appliquées au(x) système(s) d'entraînement pour maintenir le diamètre du ballon à une valeur de consigne ou entre deux valeurs mini / maxi paramétrées sont comprises entre 0 % et 3 % de la vitesse.According to an improvement of the invention, apart from the start and stop phases, the positive or negative corrections of speeds applied to the drive system (s) to maintain the diameter of the balloon at a set value or between two set minimum / maximum values are between 0% and 3% of the speed.

Selon une variante de ce dernier perfectionnement de l'invention, les corrections positives ou négatives sont effectuées par incrément fixe entre 0 % et 3 % de la vitesse.According to a variant of this last improvement of the invention, the positive or negative corrections are made in a fixed increment between 0% and 3% of the speed.

Selon une autre variante de ce dernier perfectionnement de l'invention, les corrections positives ou négatives sont proportionnelles à l'écart entre la valeur mesurée et la valeur de consigne représentative du diamètre du ballon, et plafonnées à une valeur fixe compris entre 0 % et 3 % de la vitesse.According to another variant of this last improvement of the invention, the positive or negative corrections are proportional to the difference between the measured value and the reference value representative of the balloon diameter, and capped at a fixed value between 0% and 3% of the speed.

L'invention porte également sur un dispositif de transformation des fils par double torsion ou câblage direct selon la revendication 5 dans lequel, au moins un des fils est mis en rotation au moyen d'une broche pour former un ballon autour d'un pot ou d'un berceau fixe, contenant un système de dévidage ou de renvidage et deux éléments de guidage du fil, l'un en amont, l'autre en aval du ballon et dont au moins un est en forme de canal radial prolongé dans un bras ou un disque mis en rotation solidairement avec la broche, le fil passant de l'un à l'autre de ces deux éléments, ledit dispositif présentant :

  • deux systèmes d'entraînement du fil, l'un disposé en amont et l'autre en aval du ballon, assujettis à un système de pilotage, l'un au moins des dispositifs d'entraînement étant piloté selon une consigne de vitesse ajustable ;
  • un moyen de mesurer le diamètre maximal du ballon, et/ou d'obtenir une grandeur représentative du diamètre maximale du ballon ;
  • un système de commande programmé pour effectuer des corrections sur la consigne de la (ou des) vitesse(s) ajustable(s) du (ou des) système(s) d'entraînement, pour que, en dehors des phases de démarrages et d'arrêt, et lorsque la vitesse de production est variable, la ou les vitesse(s) qui est (sont) ajustable soit (soient) ajustée(s) en permanence pour maintenir le diamètre maximal du ballon à une valeur de consigne ou entre deux valeurs mini / maxi paramétrées;
  • le pot ou le berceau fixe qui contient le système de dévidage ou de renvidage de la bobine, est entouré par un ou plusieurs anneaux coaxiaux avec la broche, servant à guider le fil lorsque la broche est à l'arrêt et tant que la vitesse de production de broche n'est pas atteinte et que le ballon n'a pas atteint sa forme et son diamètre nominal sous l'effect de la force centrifuge.
The invention also relates to a twisting or direct wiring son transformation device according to claim 5 wherein at least one of the wires is rotated by means of a pin to form a balloon around a pot or a fixed cradle, containing a winding or winding system and two yarn guiding elements, one upstream and the other downstream of the balloon and at least one of which is in the form of an extended radial channel in one arm or a disk rotated integrally with the pin, the wire passing from one to the other of these two elements, said device having:
  • two wire drive systems, one disposed upstream and the other downstream of the balloon, subject to a control system, at least one of the drive devices being controlled according to an adjustable speed instruction;
  • means for measuring the maximum diameter of the balloon, and / or for obtaining a magnitude representative of the maximum diameter of the balloon;
  • a control system programmed to make corrections to the setpoint of the adjustable speed (s) of the driving system (s), so that, outside the phases of the starting and stopping, and when the speed of production is variable, the speed (s) which is (are) adjustable is (are) continuously adjusted to maintain the maximum diameter of the balloon at a set point or between two minimum / maximum values set;
  • the pot or fixed cradle which contains the reeling or winding system of the reel, is surrounded by one or more coaxial rings with the spindle, used to guide the thread when the spindle is stopped and as long as the speed of spindle production is not achieved and that the balloon has not reached its shape and nominal diameter under the effect of centrifugal force.

Selon l'invention, comme il sera indiqué dans la suite de la description, différents moyens de mesure du diamètre maximal du ballon ou de mesure d'une grandeur représentative du diamètre maximal du ballon peuvent être envisagés.According to the invention, as will be indicated in the following description, various means for measuring the maximum diameter of the balloon or measuring a magnitude representative of the maximum diameter of the balloon can be envisaged.

L'invention sera mieux comprise en se reportant aux illustrations suivantes.

  • La figure 1 présente une vue à caractère schématique du procédé de câblage direct selon l'art antérieur.
  • La figure 2 présente une vue à caractère schématique du procédé de double torsion ou de câblage au moyen d'une broche renvideuse selon l'art antérieur.
  • La figure 3 présente une vue à caractère schématique du procédé de double torsion ou de câblage au moyen d'une broche renvideuse selon l'invention.
  • La figure 4 présente un exemple de mode de réalisation du système de contrôle apte à réaliser l'invention.
  • Les figures 5, 6 montrent des exemples de mode de mesure du diamètre du ballon au moyen de barrières optiques.
  • La figure 7 montre un exemple de mode de mesure de diamètre du ballon avec un capteur type CCD.
The invention will be better understood with reference to the following illustrations.
  • The figure 1 presents a schematic view of the direct wiring method according to the prior art.
  • The figure 2 presents a schematic view of the process of double torsion or cabling by means of a retractor pin according to the prior art.
  • The figure 3 presents a schematic view of the process of double torsion or cabling by means of a winding pin according to the invention.
  • The figure 4 presents an exemplary embodiment of the control system capable of implementing the invention.
  • The Figures 5, 6 show examples of how to measure the diameter of the balloon by means of optical barriers.
  • The figure 7 shows an example of balloon diameter measurement mode with a CCD type sensor.

Pour une meilleure compréhension de la suite de la description, les mêmes repères que ceux utilisés pour illustrer l'art antérieur sont utilisés selon les différentes formes de réalisation de l'invention.For a better understanding of the following description, the same references as those used to illustrate the prior art are used according to different embodiments of the invention.

Le terme « diamètre maximal » (D) du ballon (6) ou « valeur représentative du diamètre maximal » (D) du ballon désigne le diamètre maximal, ou tout diamètre mesuré ou évalué dans la zone où il est proche de sa valeur maximale, ou toute valeur corrélée avec ce diamètre.The term "maximum diameter" (D) of the balloon (6) or "maximum diameter representative value" (D) of the balloon means the maximum diameter, or any diameter measured or evaluated in the zone where it is close to its maximum value, or any value correlated with this diameter.

L'invention porte donc sur un procédé de transformation de fils par double torsion ou câblage direct dans lequel au moins un des fils (F), est mis en rotation au moyen d'une broche (3) à une vitesse (N), et forme un ballon (6) autour d'un pot ou d'un berceau (7) contenant un organe de dévidage ou de renvidage d'une bobine (11), dans lequel :

  • le fil (F) est guidé sur au moins l'un des cotés du ballon (6) par un élément tournant présentant un canal radial (4, 14) prolongé dans un bras ou un disque en rotation;
  • le fil (F) forme le ballon (6) en adoptant une trajectoire curviligne, sans s'enrouler sur une réserve;
  • le fil (F) est entraîné par deux systèmes d'entraînement à vitesses contrôlées (V1, V2), l'un (1) en amont et l'autre (8) en aval du ballon (6);
  • en dehors des phases de démarrage et d'arrêt, la vitesse (V1 ou V2) de l'un au moins des deux systèmes d'entraînement (1, 8) du fil (F) est ajustée en permanence pour maintenir le diamètre maximal (D) du ballon (6) à une valeur de consigne ou entre deux valeurs mini / maxi paramétrées.
The invention thus relates to a method of transforming son by double twist or direct wiring in which at least one of the son (F), is rotated by means of a pin (3) at a speed (N), and forming a balloon (6) around a pot or a cradle (7) containing a winding or winding member of a spool (11), in which:
  • the wire (F) is guided on at least one side of the balloon (6) by a rotating element having a radial channel (4, 14) extended in a rotating arm or disk;
  • the wire (F) forms the balloon (6) adopting a curvilinear trajectory, without winding on a reserve;
  • the wire (F) is driven by two controlled-speed drive systems (V1, V2), one (1) upstream and the other (8) downstream of the balloon (6);
  • outside the start and stop phases, the speed (V1 or V2) of at least one of the two drive systems (1, 8) of the wire (F) is continuously adjusted to maintain the maximum diameter ( D) of the flask (6) at a set point or between two minimum / maximum values set.

Selon l'invention, le (ou les) élément(s) de guidage (4, 14) en forme de canal radial, guide(nt) le fil (F) jusqu'à un diamètre sensiblement inférieur au diamètre maximal (D) du ballon. De préférence, l'extrémité du canal radial (4, 14), à partir duquel le fil (F) forme le ballon (6) sans s'enrouler sur une réserve, est située sur un diamètre compris entre 40% et 80% du diamètre maximal (D) dudit ballon (6).According to the invention, the guide member (s) (4, 14) in the form of a radial channel guide (s) the wire (F) to a diameter substantially smaller than the maximum diameter (D) of the ball. Preferably, the end of the radial channel (4, 14), from which the wire (F) forms the balloon (6) without winding on a reserve, is located on a diameter of between 40% and 80% of the maximum diameter (D) of said balloon (6).

Selon une caractéristique importante de l'invention, le pot ou le berceau (7) qui contient le dispositif de dévidage ou de renvidage (12,13) de la bobine (11), est entouré par un ou plusieurs anneaux (15) coaxiaux avec la broche, servant à guider le fil (F), tant que la vitesse de production de broche n'est pas atteinte et que le ballon (6) n'a pas atteint sa forme et son diamètre nominal sous l'effet de la force centrifuge. La surface extérieure desdits anneaux est polie et/ou revêtue d'un traitement de surface pour permettre au fil (F) de glisser en minimisant les frictions et l'abrasion au cours des phases d'accélération et de décélération.According to an important characteristic of the invention, the pot or the cradle (7) which contains the unwinding or winding device (12, 13) of the coil (11) is surrounded by one or more coaxial rings (15) with the spindle, used to guide the thread (F), as long as the spindle production speed is not reached and the balloon (6) has not reached its shape and its nominal diameter under the effect of the force centrifugal. The outer surface of said rings is polished and / or surface-treated to allow the yarn (F) to slide by minimizing friction and abrasion during the acceleration and deceleration phases.

Selon un mode de réalisation non-revendiqué, en dehors des phases de démarrage et d'arrêt et lorsque vitesse de production est stabilisée, l'un des deux systèmes d'entraînement du fil (1 ou 8) est piloté pour obtenir une vitesse (V1 ou V2) constante, qui détermine, en rapport avec la vitesse de rotation (N) de la broche (3), la torsion, en nombre de tours par mètre, conféré au fil (F) par le procédé. Cette vitesse constante peut être obtenue, par exemple, par un variateur de vitesses (23 ou 24) effectuant d'asservissement en boucle fermée de la vitesse sur une consigne constante.According to a non-claimed embodiment, apart from the start and stop phases and when production speed is stabilized, one of the two wire drive systems (1 or 8) is driven to obtain a speed ( V1 or V2) which determines, in relation to the rotational speed (N) of the spindle (3), the torsion, in number of revolutions per meter, given to the thread (F) by the method. This constant speed can be obtained, for example, by a variable speed drive (23 or 24) performing closed-loop servo of the speed on a constant setpoint.

Théoriquement, pour une forme de ballon (6) parfaitement stabilisée, la vitesse du deuxième système d'entraînement (1 ou 8) du fil (F) devrait être exactement égale à celle du premier, pour que la longueur de fil (F) entre les deux systèmes d'entraînement (1 et 8) soit constante. En pratique, du fait de l'incertitude des vitesses en raison des tolérances de fabrication des systèmes, des erreurs des systèmes d'asservissement en vitesse, des micro-glissements du fil (F) dans ces dispositifs, il est impossible de maintenir un tel système dans un état de fonctionnement parfaitement constant, et il en résulte que le diamètre maximal (D) du ballon (6) tend à dériver, c'est à dire augmenter ou diminuer jusqu'à créer un disfonctionnement. Pour palier à cette dérive, selon l'invention, la vitesse (V1 ou V2) du deuxième système d'entraînement (1 ou 8) à une vitesse ajustable.Theoretically, for a form of balloon (6) perfectly stabilized, the speed of the second drive system (1 or 8) of the wire (F) should be exactly equal to that of the first, so that the length of wire (F) between the two drive systems (1 and 8) are constant. In practice, because of the uncertainty of the speeds because of the manufacturing tolerances of the systems, the errors of the systems of speed control, micro-slip of the wire (F) in these devices, it is impossible to maintain such system in a perfectly constant operating state, and it follows that the maximum diameter (D) of the balloon (6) tends to drift, that is to say increase or decrease to create a malfunction. To compensate for this drift, according to the invention, the speed (V1 or V2) of the second drive system (1 or 8) at an adjustable speed.

Cette vitesse ajustable peut être obtenue, par exemple par un variateur de vitesses (23 ou 24) effectuant un asservissement en boucle fermée de la vitesse sur une consigne ajustable.This adjustable speed can be obtained, for example by a variable speed drive (23 or 24) performing a closed loop control of the speed on an adjustable setpoint.

Selon ce mode de réalisation non-revendiqué, en dehors des phases de démarrage et d'arrêt et lorsque la vitesse de production est stabilisée, le système d'entraînement (1), disposé en amont du ballon (6), est à vitesse (V1) fixe, tandis que le système d'entraînement (8) disposé en aval du ballon (6) est piloté à une vitesse (V2) ajustable. Lorsque la grandeur représentative du diamètre (D) maximal du ballon (6) est supérieure à la valeur de consigne et/ou à la valeur maximale paramétrée, la vitesse (V2) du système d'entraînement (8) disposé en aval du ballon (6) est augmentée, et lorsque la grandeur représentative du diamètre maximal (D) du ballon (6) est inférieure à la valeur de consigne et/ou à la valeur minimale paramétrée, la dite vitesse (V2) est diminuée.According to this non-claimed embodiment, apart from the starting and stopping phases and when the production speed is stabilized, the drive system (1), arranged upstream of the balloon (6), is at a speed ( V1) while the drive system (8) arranged downstream of the balloon (6) is driven at an adjustable speed (V2). When the magnitude representative of the maximum diameter (D) of the balloon (6) is greater than the setpoint value and / or the maximum parameterized value, the speed (V2) of the drive system (8) disposed downstream of the balloon ( 6) is increased, and when the magnitude representative of the maximum diameter (D) of the balloon (6) is less than the setpoint value and / or the minimum parameterized value, said speed (V2) is decreased.

Selon une variante de ce mode de réalisation non-revendiqué, en dehors des phases de démarrage et d'arrêt et lorsque vitesse de production est stabilisée, le système d'entraînement (8) disposé en aval du ballon (6), est à vitesse (V2) fixe, et le système d'entraînement (1) disposé en amont du ballon (6) est piloté à une vitesse (V1) ajustable. Lorsque la grandeur représentative du diamètre maximal (D) du ballon (6) est supérieure à la valeur de consigne et/ou à la valeur maxi paramétrée, la vitesse (V1) du système d'entraînement (1) disposé en amont du ballon (6) est diminuée, et lorsque la grandeur représentative du diamètre maximal (D) du ballon (6) est inférieure à la valeur de consigne et/ou à la valeur mini paramétrée, ladite vitesse (V1) est augmentée.According to a variant of this non-claimed embodiment, apart from the starting and stopping phases and when production speed is stabilized, the drive system (8) disposed downstream of the balloon (6) is at fixed speed (V2), and the drive system (1) arranged upstream of the balloon (6) is driven at an adjustable speed (V1). When the magnitude representative of the maximum diameter (D) of the balloon (6) is greater than the setpoint value and / or the maximum value set, the speed (V1) of the drive system (1) disposed upstream of the balloon ( 6) is decreased, and when the magnitude representative of the maximum diameter (D) of the balloon (6) is less than the setpoint value and / or the parameterized minimum value, said speed (V1) is increased.

Selon un mode de réalisation de l'invention, en dehors des phases de démarrage et d'arrêt, la vitesse de production est variable, et au moins l'un des deux systèmes d'entraînement (1 ou 8) du fil (F) est piloté pour obtenir une vitesse (V1 ou V2) qui détermine, en rapport avec la vitesse de rotation (N) de la broche (3), la torsion, en nombre de tours par mètre, conféré au fil par le procédé.According to one embodiment of the invention, apart from the start and stop phases, the speed of production is variable, and at least one of the two drive systems (1 or 8) of the wire (F) is controlled to obtain a speed (V1 or V2) which determines, in relation to the rotational speed (N) of the spindle (3), the torsion, in number of revolutions per meter, imparted to the thread by the method.

Selon ce mode de réalisation de l'invention, en dehors des phases de démarrage et d'arrêt, le système d'entraînement (1) disposé en amont du ballon et le système d'entraînement (8) disposé en aval du ballon (6) sont piloté à des vitesses ajustables, telles que la valeur relative de la différence « vitesse du système (8) placé en aval moins vitesse du système (1) placé en amont » (V2-V1):

  • augmente lorsque la grandeur représentative du diamètre maximal (D) du ballon (6) est supérieure à la valeur de consigne et/ou à la valeur maximale paramétrée;
  • diminue lorsque la grandeur représentative du diamètre maximal (D) du ballon (6) est inférieure à la valeur de consigne et/ou à la valeur minimale paramétrée.
According to this embodiment of the invention, apart from the start and stop phases, the drive system (1) disposed upstream of the balloon and the drive system (8) disposed downstream of the balloon (6). ) are controlled at adjustable speeds, such as the relative value of the difference "system speed (8) downstream less system speed (1) upstream" (V2-V1):
  • increases when the magnitude representative of the maximum diameter (D) of the balloon (6) is greater than the setpoint value and / or the parameterized maximum value;
  • decreases when the magnitude representative of the maximum diameter (D) of the flask (6) is smaller than the set value and / or the parameterized minimum value.

Quel que soit le mode de réalisation précédemment cité, en dehors des phases de démarrage et d'arrêt, les corrections positives ou négatives de vitesses (V1 ou V2) appliquées au(x) système(s) d'entraînement (1 et/ou 8) pour maintenir le diamètre (D) du ballon (6) à une valeur de consigne ou entre deux valeurs mini / maxi paramétrées sont établies par comparaison entre la valeur mesurée de la grandeur représentative du diamètre (D) du ballon (6) et la valeur de consigne et/ou les valeurs mini et maxi. Du fait de la nature flexible et élastique du fil (F) et du fait que la forme instantanée du ballon (6) découle d'un équilibre entre les tensions, les forces aérodynamiques et la force centrifuges, le diamètre maximal (D) est sujet à des variations ou instabilités instantanées qui ne sont pas représentatives d'une dérive.Whatever the embodiment mentioned above, apart from the start and stop phases, the positive or negative corrections of speeds (V1 or V2) applied to the drive system (s) (1 and / or 8) for maintaining the diameter (D) of the flask (6) at a set point or between two parameterized minimum / maximum values are established by comparison between the measured value of the quantity representative of the diameter (D) of the flask (6) and the setpoint and / or the minimum and maximum values. Due to the flexible and elastic nature of the yarn (F) and the fact that the instantaneous shape of the balloon (6) results from an equilibrium between the tensions, the aerodynamic forces and the centrifugal force, the maximum diameter (D) is subject to instantaneous variations or instabilities that are not representative of a drift.

Pour assurer la stabilité du procédé:

  • Selon l'invention, lesdites corrections sont donc calculées à partir de la mesure de la grandeur représentative du diamètre (D) du ballon (6) moyennée sur un temps représentant plusieurs tours de la broche (3).
  • Selon un perfectionnement de l'invention, en dehors des phases de démarrage et d'arrêt, afin que les corrections n'introduisent pas d'instabilités ou de pompage, les corrections positives ou négatives de vitesses (V1 ou V2) appliquées au(x) système(s) d'entraînement (1 et/ou 8) pour maintenir le diamètre (D) du ballon (6) à une valeur de consigne ou entre deux valeurs mini / maxi paramétrées sont comprises entre 0 % et 3 % de la vitesse.
To ensure the stability of the process:
  • According to the invention, said corrections are thus calculated from the measurement of the magnitude representative of the diameter (D) of the balloon (6) averaged over a time representing several turns of the spindle (3).
  • According to an improvement of the invention, apart from the start and stop phases, so that the corrections do not introduce instabilities or pumping, the positive or negative corrections of velocities (V1 or V2) applied to the (x ) drive system (s) (1 and / or 8) to maintain the diameter (D) of the balloon (6) at a setpoint or between two parameterized min / max values are between 0% and 3% of the speed.

Selon une variante de ce dernier perfectionnement de l'invention, les corrections positives ou négatives sont effectuées :

  • par incrément fixe entre 0 % et 3 % de la vitesse;
  • par incréments proportionnels à l'écart entre la valeur mesurée et la valeur cible représentative du diamètre du ballon, et plafonnées à une valeur fixe compris entre 0 % et 3 % de la vitesse.
According to a variant of this last improvement of the invention, the positive or negative corrections are made:
  • in fixed increments between 0% and 3% of the speed;
  • in increments proportional to the difference between the measured value and the target value representative of the diameter of the balloon, and capped at a fixed value between 0% and 3% of the speed.

L'invention porte également sur un dispositif de retordage ou de câblage de fils au moyen d'une broche (3), au moins un des fils étant mis en rotation pour former un ballon (6) autour d'un pot ou d'un berceau fixe (7).The invention also relates to a device for twisting or wiring wires by means of a pin (3), at least one of the wires being rotated to form a balloon (6) around a pot or a fixed cradle (7).

Selon l'invention ledit dispositif présente :

  • deux systèmes d'entraînement du fil (1, 8) l'un disposé en amont et l'autre en aval du ballon (6), assujettis à un système de pilotage (23 et/ou 24), par exemple un variateur de vitesse ou de fréquence ;
  • deux éléments de guidage du fil (F) l'un en amont, l'autre en aval du ballon (F) et dont au moins un est en forme de canal radial (4 et/ou 14), solidaire de la broche et tournant avec elle, le fil (F) passant de l'un à l'autre de ces deux éléments ;
  • un moyen de mesurer le diamètre maximal (D) du ballon, et/ou d'obtenir une grandeur représentative du diamètre maximal (D) du ballon ;
  • au moins l'un des systèmes d'entraînement (1, 8) étant piloté selon une consigne de vitesse ajustable ;
  • un système de commande (UC), tel une carte électronique, un automate, un calculateur, programmé pour effectuer des corrections de la ou des vitesses ajustables du ou des systèmes d'entraînement (1, 8), pour maintenir le diamètre maximal (D) du ballon ou sa valeur représentative égal à une valeur de consigne donnée et/ou entre deux valeurs min / max. données.
According to the invention, said device presents:
  • two wire drive systems (1, 8), one arranged upstream and the other downstream of the balloon (6), subject to a control system (23 and / or 24), for example a variable speed drive or frequency;
  • two wire guide members (F), one upstream, the other downstream of the balloon (F) and at least one of which is in the form of a radial channel (4 and / or 14), integral with the spindle and rotating with it, the thread (F) passing from one to the other of these two elements;
  • means for measuring the maximum diameter (D) of the balloon, and / or for obtaining a magnitude representative of the maximum diameter (D) of the balloon;
  • at least one of the drive systems (1, 8) being driven according to an adjustable speed instruction;
  • a control system (UC), such as an electronic card, a PLC, a computer, programmed to make corrections of the adjustable speed or speeds of the drive system or systems (1, 8), to maintain the maximum diameter (D ) of the balloon or its representative value equal to a given setpoint and / or between two min / max values. data.

Plusieurs moyens sont proposés pour obtenir une grandeur représentative de diamètre maximal (D) du ballon (6). Ces moyens sont donnés à titre d'exemples nullement limitatifs de mode de réalisation.Several means are proposed to obtain a representative magnitude of maximum diameter (D) of the balloon (6). These means are given as non-limiting examples of embodiment.

Pour un type et un titre de fil donné, et pour une vitesse de rotation (N) donnée de la broche, il a été observé que la tension du fil (F) mesurée entre les dispositifs d'entraînement (1,8) augmente fortement lorsque le diamètre maximal (D) du ballon (6) augmente et donc que la mesure de la tension du fil (F) fournit une grandeur représentative du diamètre (D). Selon ce moyen, la consigne de diamètre maximal (D) ou les valeurs mini/maxi à obtenir sont converties en consigne de tension ou valeur mini/maxi de tension valable pour un type et un titre de fil et pour une vitesse (N) de broche. Sur la base de ce principe, la tension du fil (F) peut être mesure par un capteur (16), qui peut être disposé, tel que représenté sur la figure 4:

  • soit entre la sortie de la broche (3) et le système d'entraînement (8) du fil placé en aval du ballon (6) ;
  • soit, d'une manière préférée, entre le système d'entraînement du fil (1) placé en amont du ballon et l'entrée de la broche (3).
For a given type and thread count, and for a given rotational speed (N) of the spindle, it has been observed that the thread tension (F) measured between the drive devices (1,8) increases strongly. when the maximum diameter (D) of the balloon (6) increases and therefore the measurement of the thread tension (F) provides a magnitude representative of the diameter (D). According to this means, the maximum diameter setpoint (D) or the minimum / maximum values to be obtained are converted into a voltage setpoint or minimum / maximum voltage value that is valid for a type and a wire title and for a speed (N) of brooch. On the basis of this principle, the thread tension (F) can be measured by a sensor (16), which can be arranged, as shown in FIG. figure 4 :
  • either between the output of the pin (3) and the drive system (8) of the wire placed downstream of the balloon (6);
  • or, in a preferred manner, between the yarn drive system (1) placed upstream of the balloon and the input of the spindle (3).

Pour un type et un titre de fil donné, et pour une vitesse de rotation (N) donnée de la broche, il a été observé que le couple ou la puissance absorbée par la broche (3) pour sa mise en rotation augmente fortement lorsque le diamètre maximal (D) du ballon (6) augmente et donc que la mesure de cette puissance, de ce couple, ou encore du courant absorbé par le moteur entraînant la broche fournit une grandeur représentative du diamètre maximal (D). Selon ce moyen, la consigne de diamètre maximal (D) ou les valeurs mini/maxi à obtenir sont converties en consigne ou valeur mini/maxi de puissance, couple ou courant tension valable pour un type et un titre de fil et pour une vitesse de broche.For a given type and thread count, and for a given rotational speed (N) of the spindle, it has been observed that the torque or power absorbed by the spindle (3) to rotate it increases sharply when the maximum diameter (D) of the balloon (6) increases and so that the measurement of this power, this torque, or the current absorbed by the motor driving the pin provides a magnitude representative of the maximum diameter (D). According to this means, the maximum diameter setpoint (D) or the minimum / maximum values to be obtained are converted into a setpoint or minimum / maximum value of power, torque or voltage current valid for a type and a wire title and for a speed of brooch.

La mesure directe du diamètre (D) du ballon (6) peut aussi être réalisée par des moyens optiques.The direct measurement of the diameter (D) of the balloon (6) can also be carried out by optical means.

Les figures 5 et 6 montrent un exemple de réalisation d'une telle mesure au moyen d'un dispositif composé d'au moins deux « barrière optique » (17), composées d'une source lumineuse (18) et d'un détecteur photosensible (19) entre lesquels un faisceau lumineux est établi, dont on détecte l'interruption par le passage du fil (F) du ballon (6). Les deux « barrières optiques » étant positionnées de façon à ce que l'une soit coupée lorsque le ballon atteint le diamètre mini et l'autre le diamètre maxi visés. Un traitement logique de la sortie des deux barrières optiques indique si le diamètre (D) du ballon est inférieur au mini, en les valeurs mini/maxi, ou supérieur à la valeur maximale visée.The Figures 5 and 6 show an exemplary embodiment of such a measurement by means of a device composed of at least two "optical barrier" (17), composed of a light source (18) and a photosensitive detector (19) between which a light beam is established, the interruption of which is detected by the passage of the wire (F) from the balloon (6). The two "optical barriers" are positioned so that one is cut when the balloon reaches the minimum diameter and the other the maximum diameter targeted. A logical treatment of the output of the two optical barriers indicates whether the diameter (D) of the balloon is less than the minimum, in the minimum / maximum values, or greater than the maximum value targeted.

La figure 7 montre un exemple de réalisation d'une telle mesure au moyen d'un dispositif composé d'un capteur optique de type CCD linair ou matriciel (20) associé à une source lumineuse (21) en forme de rayon (par exemple LED ou laser). Le rayon lumineux étant par exemple dirigé radialement vers l'axe de la broche au droit de la zone ou le diamètre du ballon (6) est maximal, lorsque le fil coupe ledit rayon, il est émet par réflexion un signal lumineux capté par le capteur CCD, dont un traitement localise le point d'émission (22) selon l'axe parallèle au rayon, qui est représentatif du diamètre du ballon en ce point.The figure 7 shows an exemplary embodiment of such a measurement by means of a device consisting of a linear or matrix CCD type optical sensor (20) associated with a ray-shaped light source (21) (for example LED or laser) . For example, the light ray is directed radially towards the axis of the spindle in line with the zone where the diameter of the balloon (6) is maximum, when the wire intersects said radius, it is emitted by reflection a light signal captured by the sensor CCD, a treatment locates the point of emission (22) along the axis parallel to the radius, which is representative of the diameter of the balloon at this point.

Une variante de réalisation, au moyen d'un capteur optique de type CCD matriciel associé à une source lumineuse stroboscopique synchronisée avec la rotation de la broche, permet de capturer l'image en deux dimensions et donc la forme du fil (F) formant le ballon (6) lorsqu'il est éclairé par l'éclair, et d'en déduire le diamètre (D).An alternative embodiment, by means of a matrix CCD type optical sensor associated with a stroboscopic light source synchronized with the rotation of the spindle, makes it possible to capture the image in two dimensions and therefore the shape of the wire (F) forming the balloon (6) when illuminated by lightning, and to deduce the diameter (D).

La mesure d'une grandeur représentative du diamètre du ballon peut être aussi évaluée au moyen d'un capteur acoustique disposé à proximité du ballon (6). En raison de sa rotation dans l'air, le fil (F) génère une onde de pression aérodynamique détectable par un capteur acoustique placé à proximité tel un microphone. L'intensité du signal détecte, pour une vitesse de rotation et un type de fil donné, augmente fortement lorsque la distance entre le ballon et le capteur diminue et fournit donc une grandeur représentative du diamètre du ballon. Selon ce moyen, la consigne de diamètre (D) ou les valeurs mini/maxi à obtenir sont converties en consigne ou valeur mini/maxi de l'intensité de l'onde acoustique, valable pour un type et un titre de fil et pour une vitesse de broche.The measurement of a magnitude representative of the diameter of the balloon can also be evaluated by means of an acoustic sensor disposed near the balloon (6). Due to its rotation in the air, the wire (F) generates an aerodynamic pressure wave detectable by a nearby acoustic sensor such as a microphone. The intensity of the signal detects, for a speed of rotation and a given type of wire, increases strongly when the distance between the balloon and the sensor decreases and therefore provides a magnitude representative of the diameter of the balloon. According to this means, the diameter setpoint (D) or the minimum / maximum values to be obtained are converted into a setpoint or minimum / maximum value of the intensity of the acoustic wave, valid for a type and a title of wire and for a spindle speed.

La mesure d'une grandeur représentative du diamètre du ballon peut être aussi évaluée au moyen d'un capteur de force ou de vibration, associé à un élément mécanique disposé tangentiellement à la surface du ballon (6). En raison de sa rotation dans l'air, le fil (F) crée par friction ou impact sur l'élément un effort ou une vibration détectable par le capteur. L'intensité du signal détecté, pour une vitesse de rotation et un type de fil donné, augmente fortement lorsque la trajectoire du ballon interfère avec l'élément mécanique. L'élément mécanique étant disposé en une position tangente au diamètre minimal visé, la consigne de diamètre (D) ou les valeurs mini/maxi à obtenir sont converties en consigne de valeur mini/maxi de l'intensité de la force ou de la vibration détectée, valable pour un type et un titre de fil et pour une vitesse de broche.The measurement of a magnitude representative of the diameter of the balloon can also be evaluated by means of a force or vibration sensor, associated with a mechanical element arranged tangentially on the surface of the balloon (6). Due to its rotation in the air, the wire (F) creates friction or impact on the element a force or vibration detectable by the sensor. The intensity of the detected signal, for a given speed of rotation and a given type of wire, increases strongly when the trajectory of the balloon interferes with the mechanical element. Since the mechanical element is arranged in a position tangent to the minimum target diameter, the diameter setpoint (D) or the minimum / maximum values to be obtained are converted into a minimum / maximum value value value of the intensity of the force or vibration. detected, valid for a type and a wire title and for a spindle speed.

Les avantages ressortent bien dans la description. L'invention propose une solution simple et fiable pour former un ballon stable, notamment pour les procédés de double torsion ou de câblage direct, en utilisant des moyens de guidages du fil de diamètre réduit, tout en offrant un volume dans le ballon particulièrement avantageux. Il en résulte d'une part une consommation d'énergie sensiblement réduite, et d'autre part une tension dans le fil dans le ballon très inférieure, par rapport aux procédés conventionnels.The advantages are apparent in the description. The invention proposes a simple and reliable solution for forming a stable balloon, in particular for double-twist or direct-wiring processes, by using means for guiding the wire of reduced diameter, while offering a particularly advantageous volume in the balloon. This results on the one hand a significantly reduced power consumption, and on the other hand a voltage in the wire in the balloon much lower, compared to conventional methods.

Claims (15)

  1. Two-for-one twisting or direct cabling thread transformation method in which at least one of the threads (F) is rotated by a spindle (3) and forms a balloon (6) around a pot or a stationary cradle (7) containing an unwinding or winding system (12, 13) and two elements for guiding the thread (F), one located upstream and the other located downstream from balloon (6) and one of which at least is in the form of a radial channel (4, 14) extending as an arm or disc which is conjointly rotated with spindle (3) with the thread (F) passing from one of these two elements to the other, balloon (6) being formed by adopting a curved trajectory without winding onto a reserve;
    the thread is positively driven at a controlled speed (V1; V2) by two drive systems (1; 8), one located upstream and the other located downstream from balloon (6);
    characterised in that:
    other than during start-up and stop phases, the production speed fluctuates and the speed (V1; V2) of at least one of the two systems (1; 8) for driving thread (F) is continuously adjusted in order to maintain the diameter (D) of balloon (6) at a set value or between two parameterised minimum and maximum values so that:
    - at least one of the two systems (1; 8) for driving thread (F) is controlled in order to obtain a speed (V1; V2) which determines, in relation to the rotation speed (N) of spindle (3), the twist (number of turns per metre) which the method gives to the thread,
    - drive system (1) located upstream from the balloon and drive system (8) located downstream from balloon (6) are controlled so that the relative value of the difference between the drive speed of system (8) located upstream and the speed of drive system (1) located downstream (V1-V2):
    - increases when the quantity that is representative of the maximum diameter (D) of balloon (6) exceeds the set point and/or the maximum parameterised value;
    - diminishes when the quantity that is representative of the maximum diameter (D) of balloon (6) is less than the set point and/or the minimum parameterised value, and
    - the positive or negative corrections applied to the speeds (V1; V2) of the drive system(s) (1; 8) in order to maintain the diameter (D) of balloon (6) at a set value or between two parameterised minimum/maximum values are calculated on the basis of the measured quantity that is representative of the diameter averaged over a time that corresponds to several revolutions of the spindle.
  2. Transformation method as claimed in claim 1, characterised in that, other than during start-up and stop phases, the positive or negative corrections applied to the speeds (V1; V2) of the drive system(s) (1; 8) in order to maintain the diameter (D) of balloon (6) at a set value or between two parameterised minimum/maximum values are between 0% to 3% of its speed.
  3. Transformation method as claimed in claim 2, characterised in that the positive or negative corrections are made in fixed increments of between 0% and 3% of its speed.
  4. Transformation method as claimed in claim 2, characterised in that the positive or negative corrections are proportional to the difference between the measured value and the target value that is representative of the diameter of the balloon and are capped at a fixed value of between 0% and 3% of its speed.
  5. Device for using the method as claimed in claim 1, wherein at least one of threads (F) is rotated by means of a spindle (3) and forms a balloon (6) around a pot or a stationary cradle (7) containing an unwinding or winding system (12, 13) and two elements for guiding thread (F), one located upstream and the other located downstream from balloon (6), at least one of which is in the form of a radial channel (4, 14) extending as an arm or a disc that is rotated conjointly with spindle (3), thread (F) passing from one of these two elements to the other, characterised in that it comprises:
    - two systems (1, 8) for driving thread (F), one located upstream and the other located downstream from balloon (6) that are governed by a control system (23, 24), at least one of the drive systems (1, 8) being controlled at an adjustable speed set point; a means of measuring the maximum diameter (D) of balloon (6) and/or obtaining a quantity that is representative of the maximum diameter (D) of the balloon;
    - a programmed controller (UC) used to apply corrections to the set point of the adjustable speed(s) of the drive system(s) (1, 8) so that, other than during start-up and stop phases and when the production speed fluctuates, the speed(s) that fluctuate(s) is/are continuously adjusted;
    - the pot or stationary cradle (7) which contains the unwinding or winding system (12, 13) of reel (11) is surrounded by one or more rings (15) that are coaxial with the spindle and are used to guide thread (F) when the spindle is stopped and when the production speed of the spindle is not reached and balloon (6) has not reached its nominal shape and diameter due to the effect of centrifugal force.
  6. Device as claimed in claim 5, characterised in that thread (F) which forms balloon (6) is guided by the guide element(s) in the form of radial channels (4, 14) up to a diameter that is substantially less than the maximum diameter (D) of balloon (6).
  7. Device as claimed in claim 6, characterised in that the end of the radial channel (4, 14) beyond which thread (F) forms balloon (6) without winding onto a reserve is located at a diameter of between 40% and 80% of the maximum diameter (D) of the balloon.
  8. Device as claimed in claim 5, characterised in that the means of measuring the maximum diameter (D) or a quantity that is representative of the maximum diameter (D) of the balloon consists of a sensor (16) for measuring the tension of thread (F) located between the outlet of spindle (3) and the device (8) for driving thread (F) located upstream from balloon (6).
  9. Device as claimed in claim 5, characterised in that the means of measuring the maximum diameter (D) or a quantity that is representative of the maximum diameter (D) of the balloon consists of a sensor (16) for measuring the tension of thread (F) located between the outlet of spindle (3) and the device (8) for driving thread (F) located downstream from balloon (6).
  10. Device as claimed in claim 5, characterised in that the means of measuring the maximum diameter (D) or a quantity that is representative of the maximum diameter (D) of the balloon is a measurement of the power or torque absorbed by the motor(s) in order to rotate spindle (3) and with it balloon (6) or a measurement of the current drawn by the motor(s) in order to drive spindle (3).
  11. Device as claimed in claim 5, characterised in that the means of measuring the maximum diameter (D) or a quantity that is representative of the maximum diameter (D) of the balloon comprises at least two light barriers consisting of a light source (18) and a photodetector (19) between which a light beam (17) is projected and interruption of the light beam due to impingement of thread (F) of balloon (6) is detected.
  12. Device as claimed in claim 5, characterised in that the means of measuring the maximum diameter (D) or a quantity that is representative of the maximum diameter (D) of the balloon consists of a CCD linear or array optical sensor (20) associated with a light source (21) in the form of a beam (e.g. LED or laser beam), with said optical sensor (20) picking up the point of light (22) reflected by thread (F) when it passes through said light beam.
  13. Device as claimed in claim 5, characterised in that the means of measuring the maximum diameter (D) or a quantity that is representative of the maximum diameter (D) of the balloon consists of a CCD array optical sensor associated with a stroboscopic light source which is synchronised with the rotation of the spindle, with said optical sensor picking up the image and therefore the shape of the thread that forms the balloon when it is illuminated by the flashing light.
  14. Device as claimed in claim 5, characterised in that the means of measuring the maximum diameter (D) or a quantity that is representative of the maximum diameter (D) of the balloon consists of an acoustic pick-up located close to the balloon in order to detect the intensity and/or the shape of the pressure wave formed by the aerodynamic drag of the moving thread.
  15. Device as claimed in claim 5, characterised in that the means of measuring the maximum diameter (D) or a quantity that is representative of the maximum diameter (D) of the balloon consists of a force sensor or a vibration pick-up associated with a mechanical component that is arranged tangentially to the surface of the balloon in order to detect when said balloon comes into contact with said element.
EP10723244A 2009-04-14 2010-04-09 Method and device for processing threads by double twisting or direct cabling Active EP2419554B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0952446A FR2944296B1 (en) 2009-04-14 2009-04-14 METHOD AND DEVICE FOR TRANSFORMING WIRES BY DOUBLE TORSION OR DIRECT WIRING
PCT/FR2010/050694 WO2010119214A1 (en) 2009-04-14 2010-04-09 Method and device for processing threads by double twisting or direct cabling

Publications (2)

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EP2419554A1 EP2419554A1 (en) 2012-02-22
EP2419554B1 true EP2419554B1 (en) 2013-04-03

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EP (1) EP2419554B1 (en)
ES (1) ES2423318T3 (en)
FR (1) FR2944296B1 (en)
WO (1) WO2010119214A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102015005328A1 (en) 2015-04-27 2016-10-27 Saurer Germany Gmbh & Co. Kg Apparatus and method for determining the diameter of a thread balloon formed by a running thread at a workstation of a textile machine
DE102016001164A1 (en) 2016-02-02 2017-08-03 Saurer Germany Gmbh & Co. Kg Method and device for operating a workstation of a thread balloon-forming textile machine
DE102016001099A1 (en) 2016-02-02 2017-08-03 Saurer Germany Gmbh & Co. Kg Device and method for determining the diameter of a thread balloon formed by a running thread at a workstation of a thread balloon forming textile machine

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EP3024966A1 (en) * 2013-07-24 2016-06-01 Kordsa Global Endustriyel Iplik ve Kord Bezi Sanayi ve Ticaret Anonim Sirketi A balloon diameter control unit for a cabling apparatus
CN105624860B (en) * 2015-12-21 2017-11-10 浙江日发纺织机械股份有限公司 Straight twister air ring measurement apparatus
CN112875422B (en) * 2021-01-13 2022-07-05 绍兴文理学院 Yarn unwinding and winding device and yarn winding adjustment process

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US2869314A (en) * 1952-10-21 1959-01-20 Alfred W Vibber Twisting spindle balloon control
US2731785A (en) * 1953-01-26 1956-01-24 vibber
US2989837A (en) * 1960-01-22 1961-06-27 Alfred W Vibber Twisting spindle balloon control
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015005328A1 (en) 2015-04-27 2016-10-27 Saurer Germany Gmbh & Co. Kg Apparatus and method for determining the diameter of a thread balloon formed by a running thread at a workstation of a textile machine
EP3088577A1 (en) 2015-04-27 2016-11-02 Saurer Germany GmbH & Co. KG Device and method for determining the diameter of a thread balloon, formed by a running thread at the workstation of a textile machine
US10000867B2 (en) 2015-04-27 2018-06-19 Saurer Germany Gmbh & Co. Kg Device and method for determining the diameter of a yarn balloon formed by a running yarn at a workstation of a textile machine
DE102016001164A1 (en) 2016-02-02 2017-08-03 Saurer Germany Gmbh & Co. Kg Method and device for operating a workstation of a thread balloon-forming textile machine
DE102016001099A1 (en) 2016-02-02 2017-08-03 Saurer Germany Gmbh & Co. Kg Device and method for determining the diameter of a thread balloon formed by a running thread at a workstation of a thread balloon forming textile machine
CN107022817A (en) * 2016-02-02 2017-08-08 索若德国两合股份有限公司 The apparatus and method that ballooning of yarn diameter is determined on weaving loom station
EP3202964A1 (en) 2016-02-02 2017-08-09 Saurer Germany GmbH & Co. KG Method and device for operating a workstation of a textile machine forming yarn balloons
EP3208370A1 (en) 2016-02-02 2017-08-23 Saurer Germany GmbH & Co. KG Device and method for determining the diameter of a thread balloon, formed by a running thread at the workstation of a textile machine
CN107022817B (en) * 2016-02-02 2019-07-12 索若德国两合股份有限公司 The device and method of ballooning of yarn diameter are determined on weaving loom station

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ES2423318T3 (en) 2013-09-19
WO2010119214A1 (en) 2010-10-21
EP2419554A1 (en) 2012-02-22
FR2944296A1 (en) 2010-10-15
FR2944296B1 (en) 2011-07-22

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