EP2792772B1 - Device for feeding a stuffer box with a feeding roller - Google Patents

Device for feeding a stuffer box with a feeding roller Download PDF

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Publication number
EP2792772B1
EP2792772B1 EP13305505.3A EP13305505A EP2792772B1 EP 2792772 B1 EP2792772 B1 EP 2792772B1 EP 13305505 A EP13305505 A EP 13305505A EP 2792772 B1 EP2792772 B1 EP 2792772B1
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EP
European Patent Office
Prior art keywords
crimping
roller
rollers
feed device
feed
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EP13305505.3A
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German (de)
French (fr)
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EP2792772A1 (en
Inventor
Pierre Henry
Philippe Massotte
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Superba SAS
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Superba SAS
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Publication of EP2792772A1 publication Critical patent/EP2792772A1/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
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes

Definitions

  • the present invention relates to the field of equipment for processing textile yarn, and relates to a particular feed device.
  • the textile yarn in particular the synthetic textile yarn, is generally treated in a treatment line, which makes it possible, in particular, from a straight yarn, to obtain a yarn having a certain crimp, and this permanently.
  • a treatment line which makes it possible, in particular, from a straight yarn, to obtain a yarn having a certain crimp, and this permanently.
  • the wire passes into a curling box, which consists essentially of an enclosure in which the wire is inserted by force by two rollers rotating against each other in the opposite direction, the wire being caught between them. It is thus sent into said enclosure, whose opening, at the other end, can be controlled using a movable valve, to better control its volume and therefore the pressure with which the son are temporarily stored in this pregnant.
  • the yarn is thus driven by its maintenance between, on the one hand, a generatrix of a first roll, and, on the other hand, a generator of the other roll, the two generatrices being thus separated one by one. on the other, only by the thread or threads caught between the rollers.
  • a curling box is for example described in US8,046,885 .
  • the documents FR 1 244 717 , FR 1 418 399 and US 3,205,554 also describe the state of the art.
  • the wire passes through heat-setting steps, whereby, by a heat treatment, dry or wet, the shape given to the wire in the curling box is permanently fixed. Downstream of the heat-setting phases, the wire is placed on coils or the like.
  • This is a general principle of a wire processing line, and different additional or alternative equipment can be envisaged, such as accumulators, etc.
  • the present invention aims in particular to improve the upstream processing step at the level of the curling box to ultimately improve the quality of the wire.
  • Another problem is that it is necessary for the treatment phases downstream of the curling box, in particular for the winding phase at the end of the treatment, to ensure that all the threads move at the same speed.
  • a variation in speed can come from the elasticity of the threads, and therefore from their contraction or elongation under the effect of their tension, or from a bad catch against one or the other of the two rollers, which causes slip.
  • the invention aims to improve the control possibilities of the curling box and its adjustment possibilities to ensure the quality of the output product.
  • the present invention thus aims to overcome at least a portion and preferably all the aforementioned drawbacks, and proposes for this purpose to arrange at least one additional roller upstream of the two rollers of the curling box, which allows to drive the wire before it is caught between them and thereby increasing the length of the wire in contact with the roll or rolls.
  • the subject of the invention is thus a device for feeding wire into a curling box, to be mounted in a wire treatment line downstream of a feed rack and upstream of a thermal fixing means of the crimp created on the wire by said curling box, said feeding device comprising a fixed support, the entrance of the curling box being formed by a pair of parallel crimping rolls and intended to rotate in opposite directions against each other; the other at the level of a curl line, to send in the curling box a thread which would be caught between them two.
  • This device is characterized in that it comprises, in addition, at least one input roller disposed upstream of said crimping rollers parallel to them and on which the wire runs before being caught between them, the at least one an input roller being movable so as to be able to move its axis of rotation in a scanning path, while remaining parallel to the axes of rotation of the crimping rollers.
  • the subject of the invention is therefore a feed device 1 for wire in a crimping box 2, to be mounted in a wire treatment line downstream of a feed rack and upstream of a thermal fixing means.
  • said feeder 1 comprising a fixed support 3, the entrance of the curling box 2 being formed by a pair of parallel curling rollers 4 and intended to rotate in opposite directions against one another at a crimp line, to send in the curling box 2 a wire which would be caught between them two.
  • the crimping rollers 4 are advantageously part of the feed device 1.
  • the feed device 1 comprises, in addition, at least one input roller 5, arranged upstream of said crimping rollers 4 parallel to them and on which the wire runs before being caught between them , which helps to ensure an equal speed for all the son treated simultaneously.
  • the at least one input roll 5 thus forms an additional roll with respect to the two conventional rolls of a curling box 2 and makes it possible to increase the portion of the thread used for its training. Indeed, in the absence of input roll 5, the wire is driven only by the generatrices of the crimping rollers 4 which are against each other. With the input roller 5, the yarn is driven by its part in contact with said roller along a portion of its perimeter, as well as at its part in contact with one of the crimping rollers 4 along a portion of its perimeter.
  • the crimping rollers 4 are preferably made of metal, one of the two optionally having a circumferential groove occupying part of its width to accommodate a set of superposed son without requiring a distance between the two crimping rollers 4.
  • the crimping rollers 4 can be mounted cantilevered each at the end of a shaft mounted in the support 3.
  • the support 3 essentially consists of two parallel flanks 10 between the respective extensions of which are positioned trees at the end of which are mounted the crimping rollers 4, as well as the at least one input roll 5
  • the crimping rollers 4 and the at least one input roller 5 are offset in cantilever support 3, the curling box 2 and the support 3 thus being positioned against each other.
  • the feed device 1 may be an element added to a curling box 2 existing elsewhere on the processing line or include one, which is then one of the modules.
  • the possible placement of the crimping rollers 4 and the at least one input roll 5 in the extension of the support 3, between the two sides 10, may, in the latter case, be easier.
  • the at least one input roller 5 is arranged so that the yarn running towards the crease line travels over at least a portion of the circumference of the at least one input roll 5 as well as on a part of the circumference of one of the crimping rollers 4, for example placed above the pair of crimping rollers 4, that is to say so that one of the two crimping rollers 4 is between on the one hand, the other crimping roller 4, and, on the other hand, the input roller 5, the three being optionally aligned against one another.
  • the at least one input roll 5 preferably has a rough circumferential surface, for example by means of a polymeric, rubber or other coating.
  • the at least one input roller 5 is movable so as to be able to move its axis of rotation in a scanning path, while remaining parallel to the axes of rotation of the crimping rollers 4, in order to be able to adjust the position of the at least one inlet roller 5 with respect to the nearest crimping roller 4, in order to vary the proportion of the circumference occupied by the wire, both on the at least one input roller 5 and on the crimping roller 4 against which he is brought.
  • This characteristic makes it possible, in particular, to increase in a controlled manner the length of the path of the threads before the crimping, so as to cancel any overlaps making the curl inhomogeneous and also so as to compensate for any differences in speed by the stretching or contraction of the wires during this journey. It also makes it possible to increase in a controlled manner the length of the thread on the input roll 5 so as to further control the speed of each thread by reducing the risk of slipping, but also possibly to reduce the length of the path before passing through the crimp rollers 4 to limit the risk of overlap between the son.
  • the feed device 1 then has means adapted to block the input roller 5 in the chosen position, or else elastic means autonomously controlling the force caused on the input roller 5 by the tension of the thread . It may be preferentially a screwing solution.
  • the feed device 1 has guiding means for the movement of the input roller 5 in its scanning path, able to guide it in a rotational movement about the axis of the crimping roller. 4 from which he is closest.
  • the input roller 5 and the closest crimping roller 4 stay in contact, possibly via the wires, even by changing the position of the input roller 5.
  • this makes it possible to simplify the construction by re-exploiting the arrangements provided for the rotation of the crimping roller 4 concerned.
  • the inlet roller 5 rotates in opposite directions and against one of the crimping rollers 4, the guide means thus maintaining contact between these two rollers.
  • the input roll 5 can be moved while rolling on the surface of the crimping roll 4 against which it is in contact.
  • the advantage of maintaining contact is, on the one hand, to increase, by the weight of the input roller 5, the force exerted on the crimping roll 4 so that it is more pressing on the other roll of crimp 4, and secondly, to use the crimping roller 4 as a support for the input roller 5, and thus to simplify the locking means in position of the input roller 5. Indeed, if the entry roller 5 does not remain in contact with the crimping roller 4, keep it in position may require to counter significant forces caused by its weight cantilever.
  • the feed device 1 comprises an inlet frame 8 described below, to which is fixed the inlet roller 5, is itself placed in the support 3 with tenons adapted, of the pin, pin, rod, stud, or other type, for example the axial ends of a fixing shaft of said frame and around which it can rotate, these pins being able to move in guide means made in the form of grooves 13
  • These grooves may take the form of an opening in each of the flanks 10 oblong opening, curved or otherwise.
  • the input frame 8 can be movable thanks to these grooves, then, once its ideal position found, be locked in position, by screwing, for example.
  • the arms of the input chassis 8, at the end of which is placed the shaft whose end forms the input roller 5, may, alternatively or additionally, present grooves 13 in which the chassis attachment shaft input 8 can flow, as shown in figure 8 or in which the shaft carrying the input roller 5 can move. It is thus possible to change the distance between the axis of rotation of the input frame 8 and the axis of rotation of the input roller 5 that it carries.
  • the guiding means may thus be in the form of at least one groove 13 in which a workpiece may circulate, one or the other being connected to the input roll 5, possibly via the input chassis 8 which carries it, the other being connected to the support 3.
  • the feed device 1 has guide means for the movement of the input roller 5 in its scanning path, adapted to guide it in a movement that changes its distance from the nearest crimping roller 4, for example a linear path perpendicular to the axis of rotation of the crimping rollers 4.
  • the guiding means may then be in the form of a groove in which a workpiece may circulate, one or the other being connected to the input roll 5, the guide means here ensuring, however, a displacement of the roll of linear input and perpendicular to the plane formed by the axes of rotation of the two crimping rollers 4.
  • the guiding means consist essentially of a pair of grooves 13, arranged in a plane perpendicular to the axis of rotation of the input roll 5 and in which can be circulated, in each case, a portion of the shaft carrying the input roller 5 or a part to maintain said shaft, including the input frame 8.
  • At least one of the two crimping rollers 4 is mounted on a crimping frame 6, pivoting about an axis relative to the support 3, so as to be able to move one of the other said crimping rollers 4, for separating the crimping rollers 4 to pass son on the occasion of the launch of production, but also to adjust the force exerted between the two crimping rollers 4.
  • the crimp frame 6 essentially takes the form of two arms integral with one another, at one end of which is mounted one of the crimping rollers 4, and pivotally mounted relative to the support 3 at their other end, the axis of rotation of said crimping frame 6 being in particular parallel to the crimping rollers 4, offset from the plane formed by their axes of rotation, perpendicular to it, for example towards the rear of the device supply 1 to the downstream stages of the wire treatment.
  • the crimp frame 6 is advantageously mounted at the axial ends of a shaft which extends between the flanks 10 of the support 3 by slightly protruding.
  • the crimping roller 4 is placed in cantilever of a shaft connecting the two arms of the crimping frame 6 to each other, out of the arms rather than between them.
  • the feed device 1 also has, as shown in FIG. figure 6 , abutment means 14 mounted on the support 3 to limit the movement of the crimping frame 6, in the form of a buffer against which one of its arms can come into abutment, or possibly also a working damper, by its eccentric positioning with respect to the axis of rotation of the input frame 6, in case of rotary movement of the input frame 6.
  • the feed device 1 therefore comprises two superposed crimping rollers 4, in contact and rotating in opposite directions, and, placed above, an inlet roll 5.
  • the feed device 1 has a first pressure means 7, adapted by its action to press one of the crimping rollers 4 against the other, which allows to control the force exerted between the two crimping rollers 4 and thus allow better control of the crimp created.
  • the first pressure means 7 is preferably in the form of a pivoting lever relative to the support 3, which can come into contact with the crimping frame 6 at a dedicated lug, preferably placed between the two arms, at the level of the shaft at the end of which is the roller, as well as an actuator which acts on said lever so that it exerts a force on the crimping frame 6 and thus brings the crimping roller 4 closer to the other mounted thereon, for example a jack resting on the support 3.
  • a second pressure means 9 for controlling the force exerted by the input roller 5 on the crimping roller 4 is described below.
  • the input roller 5 is mounted on an input frame 8, pivoting about an axis relative to to the support 3, so as to be able to move the input roller 5 of the nearest curling roller 4, with which it is possibly normally in contact, to safely pass the wire between them at the launch from production.
  • One of the advantages of this characteristic is that it is possible to separate the input roller 5 from the crimping rollers 4 and to pass wires between them at the time of starting, but also to be able to control the possible pressure with which the roll of Inlet 5 acts on the crimping roll 4, as will be described later.
  • the entry frame 8 advantageously takes the form of essentially two arms integral with one another, at one end of which is the cantilevered entry roller 5 at the end of a shaft, and pivotally mounted relative to the support 3 at their other end, the axis of rotation of said inlet frame 8 being in particular parallel to the crimping rollers 4, offset from the plane formed by their axes of rotation, perpendicular to it, for example towards the rear of the feed device 1, towards the downstream steps of the treatment.
  • the input roll 5 is in particular placed in cantilever of a shaft connecting the two arms of the entrance frame 8 to each other, out of the arms rather than between them.
  • the feed device 1 also has, as shown in FIG. figure 6 stop means 14 mounted on the support 3 to limit the movement of the input frame 8, in the form of a buffer against which one of its arms may come into abutment, or possibly also a damper working in case of movement of the entrance frame 8.
  • the mobility of said roller with respect to the crimping rollers 4 for the purpose of adjusting the drive length and free path between the rack and the crimping rollers 4 is ensured by the mobility of the entry frame 8 itself in the support 3, as already mentioned above, thanks to a set of grooves 13.
  • the support 3 presents a pair of grooves 13, forming guide means and in which the entry frame 8 can move, so as to print the input roller 5 scan path.
  • the mobility of the input roll 5 is therefore ensured here by the entire mobility of the input frame 8, as illustrated by FIG. figure 7 .
  • the feed device 1 has a second pressure means 9, able, by its action, to press the input roller 5 against the nearest crimping roller 4.
  • This second pressure means 9 is for example in the form of a pivoting lever relative to the support 3, which can come into contact with the entry frame 5 at a dedicated tab, preferably placed between its two arms, and than an actuator which acts on said lever so that it exerts a force on the crimping frame 4 and so it brings the input roller 5 closer to the nearest crimping roller 4.
  • the lever of the first pressure means 7 and the lever of the second pressure means 9 are pivotally mounted on the same shaft, the actuator of the first pressure means 7 and the actuator of the second pressure means 9 being connected in series, so that the actuator of the second pressure means 9 alone conditions the force between the input roller 5 and the nearest crimping roller 4.
  • the actuator of the first pressure means 7 may, for example, take the form of a pneumatic cylinder whose one end is fixed to the support 3, the other end acting on the lever of the first pressure means, and forming the base anchoring a spring constituting the actuator of the second pressure means 9 and acting on the lever of the second pressure means 9.
  • the two levers are in particular pivotally mounted on a shaft located, relative to the plane formed by the axes of the crimping rollers 4, on the other side of the axis of rotation of the crimping frame 6 and / or of the entry frame 8.
  • Such a series connection allows in particular to independently control the forces exerted on a crimping roller 4, the other or by the input roller 5, but also to simplify the construction.
  • the crimping frame 6 carries the crimping roller 4 closest to the input roller 5.
  • the entrance frame 8 and the crimping frame 6 being pivotally mounted about the same axis, mounted on the same shaft as comprises the feed device 1 and mounted on the support 3, the input frame 8 being placed outside the pair of flanks 10, the crimp frame 6 being placed between the two flanks 10.
  • one of the aims of the invention is also to guarantee that the yarns all evolve at the same speed at the entrance of the curling box 2, which makes the winding downstream of the treatment more reliable.
  • the feed roller 5 and the crimping roller 4 against which it is used to drive the wire it is important to ensure that both have the same speed of rotation.
  • any variation in speed may cause adverse effects on the yarn, resulting from mechanical forces such as shearing, pulling or compression, which then take place when the thread passes from the feed roller 5 to the crimping roller 4 against which it turns out that.
  • Friction drives of one of the rollers, motorized, at least the other of the two rollers are therefore to be avoided because the presence of son between them necessarily reduces the contact pressure, which must be sufficient to ensure good transmission. It is therefore preferable to control the rotation of each roll, or at least to ensure a transmission from one to at least the other by notch, toothed belt type, gear, or others. If one of the rollers is to be moved by the movement of another, it is preferable to arrange the transmission outside the area where the wires are normally located, so as to prevent their presence from reducing the force of the contact, as mentioned above.
  • the crimping rollers 4 are set in motion by a motor, which acts on the two rollers simultaneously, or on only one of the two, the other being rotated by its own motor or by driving from the single motorized roller. .
  • said device comprises a drive means 11 for rotating in a controlled manner the input roller 5, said means acting outside the circumferential zone of presence of the wires on the input roller 5, in particular at the level of the shaft at the end of which the input roller 5 is mounted.
  • the feed device 1 comprises in particular a motor, to create the rotational movement of the crimping rollers 4, said motor also causing the rotation of the input roller 5, directly by mounting it on the input roll 5 itself. or indirectly with a notch drive, such as a gear and / or at least one toothed belt, from its output shaft or another roller which it motorises directly.
  • a motor to create the rotational movement of the crimping rollers 4, said motor also causing the rotation of the input roller 5, directly by mounting it on the input roll 5 itself. or indirectly with a notch drive, such as a gear and / or at least one toothed belt, from its output shaft or another roller which it motorises directly.
  • the drive means 11 comprises a toothed belt 12, acting on the input roller shaft 5 and driven by a motor, said toothed belt 12 being in particular mounted on a notched wheel driven directly. by the motor and mounted on one of the crimping roller 4, and also causing the other crimping roll 4 to rotate by means of toothed wheels which it has.
  • the drive means 11 comprises a pulley which bypasses the toothed belt 12 and eccentrically placed on a pivoting lever subjected to the action of a spring, a end of said spring being fixed to the support 3 and the other to said lever, having the effect, by the rotation of the lever and the distance of the pulley relative to the rollers, to ensure the tension of the belt even in case of spacing between Rolls; Coils.
  • This pulley, mounted on the pivoting lever on which a spring acts thus forms a means for maintaining the tension of the toothed belt 12, which avoids losing the mechanical attachment in the event of maintenance.
  • the appended figures illustrate that, in this embodiment, the input roller 5 and the crimping rollers 4 are mounted cantilevered one above the other, the input roller 5 being held at the end of a shaft mounted in an entrance frame 8, one of the crimping rollers 4 being held at the end of a shaft mounted in a crimping frame 6 the other crimping roll 4 being held at the end of a shaft mounted in the support 3, the entrance frame 8 and the crimping frame 6 being in the extension of the support 3.
  • Such an arrangement makes it possible in particular not to modify the architecture of the existing processing machines, and therefore to install the feed device 1 without reviewing the design in depth.
  • the support 3 and its elements can thus be placed without interfering with the planned circulation of the wires from the rack to the curling box 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Description

La présente invention relève du domaine des équipements pour traitement de fil textile, et a pour objet un dispositif d'alimentation particulier.The present invention relates to the field of equipment for processing textile yarn, and relates to a particular feed device.

Le fil textile, en particulier le fil textile synthétique, est généralement traité dans une ligne de traitement, qui permet notamment, à partir d'un fil droit, d'obtenir un fil présentant une certaine frisure, et ce de façon permanente. Classiquement, le fil passe dans une boîte à friser, qui consiste essentiellement en une enceinte dans laquelle le fil est inséré à force par deux rouleaux tournant l'un contre l'autre en sens inverse, le fil étant pris entre eux. Il est ainsi envoyé dans ladite enceinte, dont l'ouverture, à l'autre extrémité, peut être contrôlée à l'aide d'un clapet mobile, pour mieux contrôler son volume et donc la pression avec laquelle les fils sont stockés provisoirement dans cette enceinte. Le fil est donc entraîné grâce à son maintien entre, d'une part, une génératrice d'un premier rouleau, et, d'autre part, une génératrice de l'autre rouleau, les deux génératrices n'étant donc séparés l'une de l'autre que par le ou les fils pris entre les rouleaux. Une boîte à friser est par exemple décrite dans US 8,046,885 . Les documents FR 1 244 717 , FR 1 418 399 et US 3,205,554 décrivent également l'état de la technique.The textile yarn, in particular the synthetic textile yarn, is generally treated in a treatment line, which makes it possible, in particular, from a straight yarn, to obtain a yarn having a certain crimp, and this permanently. Conventionally, the wire passes into a curling box, which consists essentially of an enclosure in which the wire is inserted by force by two rollers rotating against each other in the opposite direction, the wire being caught between them. It is thus sent into said enclosure, whose opening, at the other end, can be controlled using a movable valve, to better control its volume and therefore the pressure with which the son are temporarily stored in this pregnant. The yarn is thus driven by its maintenance between, on the one hand, a generatrix of a first roll, and, on the other hand, a generator of the other roll, the two generatrices being thus separated one by one. on the other, only by the thread or threads caught between the rollers. A curling box is for example described in US8,046,885 . The documents FR 1 244 717 , FR 1 418 399 and US 3,205,554 also describe the state of the art.

En sortie de la boîte à friser, le fil passe par des étapes de thermofixation, grâce auxquelles, par un traitement thermique, sec ou humide, la forme donnée au fil dans la boîte à friser est définitivement fixée. En aval des phases de thermofixation le fil est disposé sur des bobines ou autres. Il s'agit d'un principe général d'une ligne de traitement de fil, et différents équipements additionnels ou alternatifs peuvent être envisagés, comme des accumulateurs, etc.At the outlet of the curling box, the wire passes through heat-setting steps, whereby, by a heat treatment, dry or wet, the shape given to the wire in the curling box is permanently fixed. Downstream of the heat-setting phases, the wire is placed on coils or the like. This is a general principle of a wire processing line, and different additional or alternative equipment can be envisaged, such as accumulators, etc.

La présente invention vise en particulier à améliorer l'étape amont du traitement, au niveau de la boîte à friser pour améliorer au final la qualité du fil.The present invention aims in particular to improve the upstream processing step at the level of the curling box to ultimately improve the quality of the wire.

Un premier problème qui apparaît lors de l'utilisation d'une alimentation de boîte à friser avec deux rouleaux contrarotatifs en contact, entre lesquels se placent les fils, est que la probable superposition des fils entre les deux rouleaux amène à une frisure hétérogène entre les fils. Garantir une frisure homogène nécessite donc de garantir que les fils restent bien les uns à côté des autres entre les deux rouleaux, et ne se chevauchent pas.A first problem that arises when using a curling box feed with two counter-rotating rollers in contact, between which the threads are placed, is that the probable overlap of the threads between the two rollers leads to a heterogeneous crimp between the two rollers. son. Ensuring a homogeneous crimp therefore requires that the wires remain well next to each other between the two rollers, and do not overlap.

Un autre problème est qu'il est nécessaire, pour les phases de traitement en aval de la boîte à friser, notamment pour la phase de bobinage à la fin du traitement, de garantir que tous les fils se déplacent à la même vitesse. Une variation de vitesse peut provenir de l'élasticité des fils, et donc de leur contraction ou allongement sous l'effet de leur tension, ou encore d'un mauvais accrochage contre l'un ou l'autre des deux rouleaux, ce qui provoque du glissement.Another problem is that it is necessary for the treatment phases downstream of the curling box, in particular for the winding phase at the end of the treatment, to ensure that all the threads move at the same speed. A variation in speed can come from the elasticity of the threads, and therefore from their contraction or elongation under the effect of their tension, or from a bad catch against one or the other of the two rollers, which causes slip.

De façon générale, l'invention vise à améliorer les possibilités de contrôle de la boîte à friser et ses possibilités de réglage pour assurer la qualité du produit en sortie.In general, the invention aims to improve the control possibilities of the curling box and its adjustment possibilities to ensure the quality of the output product.

La présente invention a ainsi pour but de pallier au moins une partie et préférentiellement tous les inconvénients précités, et propose pour cela d'aménager au moins un rouleau supplémentaire en amont des deux rouleaux de la boîte à friser, qui permet d'entraîner le fil avant sa prise entre ces derniers et d'augmenter ainsi la longueur du fil en contact avec le ou les rouleaux.The present invention thus aims to overcome at least a portion and preferably all the aforementioned drawbacks, and proposes for this purpose to arrange at least one additional roller upstream of the two rollers of the curling box, which allows to drive the wire before it is caught between them and thereby increasing the length of the wire in contact with the roll or rolls.

L'invention a ainsi pour objet un dispositif d'alimentation de fil dans une boîte à friser, à monter dans une ligne de traitement de fil en aval d'un râtelier d'alimentation et en amont d'un moyen de fixation thermique de la frisure créée sur le fil par ladite boîte à friser, ledit dispositif d'alimentation comprenant un support fixe, l'entrée de la boîte à friser étant formée par une paire de rouleaux de frisure parallèles et destinés à tourner en sens opposés l'un contre l'autre au niveau d'une ligne de frisure, pour envoyer dans la boîte à friser un fil qui se trouverait pris entre eux deux. Ce dispositif est caractérisé en ce qu'il comprend, en outre, au moins un rouleau d'entrée, disposé en amont desdits rouleaux de frisure parallèlement à eux et sur lequel circule le fil avant d'être pris entre ces derniers, le au moins un rouleau d'entrée étant mobile de sorte à pouvoir déplacer son axe de rotation dans une trajectoire de balayage, tout en restant parallèle aux axes de rotation des rouleaux de frisure.The subject of the invention is thus a device for feeding wire into a curling box, to be mounted in a wire treatment line downstream of a feed rack and upstream of a thermal fixing means of the crimp created on the wire by said curling box, said feeding device comprising a fixed support, the entrance of the curling box being formed by a pair of parallel crimping rolls and intended to rotate in opposite directions against each other; the other at the level of a curl line, to send in the curling box a thread which would be caught between them two. This device is characterized in that it comprises, in addition, at least one input roller disposed upstream of said crimping rollers parallel to them and on which the wire runs before being caught between them, the at least one an input roller being movable so as to be able to move its axis of rotation in a scanning path, while remaining parallel to the axes of rotation of the crimping rollers.

L'invention sera mieux comprise, grâce à la description ci-après, qui se rapporte à des modes de réalisation préférés, donnés à titre d'exemples non limitatifs, et expliqués avec référence aux dessins schématiques annexés, dans lesquels :

  • la figure 1 montre une boîte à friser avec un rouleau d'entrée supplémentaire, le tout vu depuis l'amont de la ligne de traitement ;
  • la figure 2 montre une vue arrière, mettant en valeur le montage particulier des rouleaux ;
  • la figure 3 illustre la solution mise en oeuvre pour l'entraînement ;
  • les figures 4 et 5 sont des vues du même mode de réalisation qui illustrent les moyens mis en oeuvre pour presser les rouleaux ;
  • la figure 6 montre le placement de moyens de butée pour le mouvement des chassis portant, pour l'un, le rouleau d'entrée, et, pour l'autre, un des rouleaux de la boîte à friser, dits rouleaux de frisure, et
  • les figures 7 et 8 illustrent schématiquement des possibilités d'aménager un réglage du rouleau d'entrée.
The invention will be better understood, thanks to the following description, which refers to preferred embodiments, given by way of non-limiting examples, and explained with reference to the appended diagrammatic drawings, in which:
  • the figure 1 shows a curling box with an additional entrance roll, all seen from upstream of the treatment line;
  • the figure 2 shows a rear view, highlighting the particular assembly of the rollers;
  • the figure 3 illustrates the solution implemented for training;
  • the figures 4 and 5 are views of the same embodiment which illustrate the means used to press the rollers;
  • the figure 6 shows the placement of abutment means for the movement of the chassis carrying, for one, the input roller, and for the other, one of the rollers of the curling box, called crimping rolls, and
  • the figures 7 and 8 schematically illustrate possibilities of arranging an adjustment of the input roller.

L'invention a donc pour objet un dispositif d'alimentation 1 de fil dans une boîte à friser 2, à monter dans une ligne de traitement de fil en aval d'un râtelier d'alimentation et en amont d'un moyen de fixation thermique de la frisure créée sur le fil par ladite boîte à friser 2, ledit dispositif d'alimentation 1 comprenant un support 3 fixe, l'entrée de la boîte à friser 2 étant formée par une paire de rouleaux de frisure 4 parallèles et destinés à tourner en sens opposés l'un contre l'autre au niveau d'une ligne de frisure, pour envoyer dans la boîte à friser 2 un fil qui se trouverait pris entre eux deux. Les rouleaux de frisure 4 font avantageusement partie du dispositif d'alimentation 1.The subject of the invention is therefore a feed device 1 for wire in a crimping box 2, to be mounted in a wire treatment line downstream of a feed rack and upstream of a thermal fixing means. of the crimp created on the wire by said curling box 2, said feeder 1 comprising a fixed support 3, the entrance of the curling box 2 being formed by a pair of parallel curling rollers 4 and intended to rotate in opposite directions against one another at a crimp line, to send in the curling box 2 a wire which would be caught between them two. The crimping rollers 4 are advantageously part of the feed device 1.

Selon l'invention, le dispositif d'alimentation 1 comprend, en outre, au moins un rouleau d'entrée 5, disposé en amont desdits rouleaux de frisure 4 parallèlement à eux et sur lequel circule le fil avant d'être pris entre ces derniers, ce qui contribue à garantir une vitesse égale pour l'ensemble des fils traités simultanément.According to the invention, the feed device 1 comprises, in addition, at least one input roller 5, arranged upstream of said crimping rollers 4 parallel to them and on which the wire runs before being caught between them , which helps to ensure an equal speed for all the son treated simultaneously.

Le au moins un rouleau d'entrée 5 forme donc un rouleau additionnel par rapport aux deux rouleaux classiques d'une boîte à friser 2 et permet d'augmenter la portion du fil utilisée pour son entraînement. En effet, en l'absence de rouleau d'entrée 5, le fil n'est entraîné que par les génératrices des rouleaux de frisure 4 qui se trouvent l'une contre l'autre. Avec le rouleau d'entrée 5, le fil est entraîné grâce à sa partie en contact avec ledit rouleau le long d'une portion de son périmètre, ainsi qu'à sa partie en contact avec l'un des rouleaux de frisure 4 le long d'une portion de son périmètre.The at least one input roll 5 thus forms an additional roll with respect to the two conventional rolls of a curling box 2 and makes it possible to increase the portion of the thread used for its training. Indeed, in the absence of input roll 5, the wire is driven only by the generatrices of the crimping rollers 4 which are against each other. With the input roller 5, the yarn is driven by its part in contact with said roller along a portion of its perimeter, as well as at its part in contact with one of the crimping rollers 4 along a portion of its perimeter.

Les rouleaux de frisure 4 sont préférentiellement réalisés en métal, l'un des deux présentant éventuellement une gorge circonférentielle occupant une partie de sa largeur pour y accueillir un ensemble de fils superposés sans nécessiter un éloignement des deux rouleaux de frisure 4. Les rouleaux de frisure 4 peuvent être montés en porte à faux chacun à l'extrémité d'un arbre monté dans le support 3.The crimping rollers 4 are preferably made of metal, one of the two optionally having a circumferential groove occupying part of its width to accommodate a set of superposed son without requiring a distance between the two crimping rollers 4. The crimping rollers 4 can be mounted cantilevered each at the end of a shaft mounted in the support 3.

Comme il sera encore décrit plus loin, le support 3 est essentiellement constitué de deux flancs 10 parallèles entre les prolongements respectifs desquels sont positionnés des arbres au bout desquels sont montés les rouleaux de frisure 4, ainsi que le au moins un rouleau d'entrée 5. Ainsi, les rouleaux de frisure 4 et le au moins un rouleau d'entrée 5 se trouvent décalés en porte à faux du support 3, la boîte à friser 2 et le support 3 étant ainsi positionnés l'un contre l'autre. Dans l'absolu, le dispositif d'alimentation 1 peut être un élément rajouté sur une boîte à friser 2 existante par ailleurs sur la ligne traitement ou en comprendre une, qui en est alors l'un des modules. L'éventuel placement des rouleaux de frisure 4 et du au moins un rouleau d'entrée 5 dans le prolongement du support 3, entre les deux flancs 10, peut, dans ce dernier cas, être plus aisé.As will be further described below, the support 3 essentially consists of two parallel flanks 10 between the respective extensions of which are positioned trees at the end of which are mounted the crimping rollers 4, as well as the at least one input roll 5 Thus, the crimping rollers 4 and the at least one input roller 5 are offset in cantilever support 3, the curling box 2 and the support 3 thus being positioned against each other. In absolute terms, the feed device 1 may be an element added to a curling box 2 existing elsewhere on the processing line or include one, which is then one of the modules. The possible placement of the crimping rollers 4 and the at least one input roll 5 in the extension of the support 3, between the two sides 10, may, in the latter case, be easier.

Dans le mode de réalisation illustré, le au moins un rouleau d'entrée 5 est agencé pour que le fil se dirigeant vers la ligne de frisure circule sur au moins une partie de la circonférence du au moins un rouleau d'entrée 5 ainsi que sur une partie de la circonférence d'un des rouleaux de frisure 4, par exemple placé au dessus de la paire de rouleaux de frisure 4, c'est-à-dire de sorte que l'un des deux rouleaux de frisure 4 se trouve entre, d'une part, l'autre rouleau de frisure 4, et, d'autre part, le rouleau d'entrée 5, les trois étant éventuellement l'un contre l'autre, alignés. Le au moins un rouleau d'entrée 5 présente préférentiellement une surface circonférentielle rugueuse, par exemple grâce à un revêtement polymérique, caoutchouc ou autres.In the illustrated embodiment, the at least one input roller 5 is arranged so that the yarn running towards the crease line travels over at least a portion of the circumference of the at least one input roll 5 as well as on a part of the circumference of one of the crimping rollers 4, for example placed above the pair of crimping rollers 4, that is to say so that one of the two crimping rollers 4 is between on the one hand, the other crimping roller 4, and, on the other hand, the input roller 5, the three being optionally aligned against one another. The at least one input roll 5 preferably has a rough circumferential surface, for example by means of a polymeric, rubber or other coating.

Le au moins un rouleau d'entrée 5 est mobile de sorte à pouvoir déplacer son axe de rotation dans une trajectoire de balayage, tout en restant parallèle aux axes de rotation des rouleaux de frisure 4, afin de pouvoir régler la position du au moins un rouleau d'entrée 5 par rapport au rouleau de frisure 4 le plus proche, afin de faire varier la proportion de la circonférence qu'occupe le fil, tant sur le au moins un rouleau d'entrée 5 que sur le rouleau de frisure 4 contre lequel il est amené.The at least one input roller 5 is movable so as to be able to move its axis of rotation in a scanning path, while remaining parallel to the axes of rotation of the crimping rollers 4, in order to be able to adjust the position of the at least one inlet roller 5 with respect to the nearest crimping roller 4, in order to vary the proportion of the circumference occupied by the wire, both on the at least one input roller 5 and on the crimping roller 4 against which he is brought.

Cette caractéristique permet en particulier, d'augmenter de façon contrôlée la longueur du trajet des fils avant la frisure, de sorte à annuler des éventuels chevauchements rendant la frisure inhomogène et aussi de sorte à compenser des éventuelles différences de vitesse par l'étirement ou la contraction des fils pendant ce trajet. Elle permet aussi d'augmenter de façon contrôlée la longueur du fil sur le rouleau d'entrée 5 de sorte à maîtriser davantage la vitesse de chaque fil en réduisant les risques de glissement, mais aussi éventuellement de réduire la longueur du trajet avant le passage par les rouleaux de frisure 4 pour limiter les risques de chevauchement entre les fils.This characteristic makes it possible, in particular, to increase in a controlled manner the length of the path of the threads before the crimping, so as to cancel any overlaps making the curl inhomogeneous and also so as to compensate for any differences in speed by the stretching or contraction of the wires during this journey. It also makes it possible to increase in a controlled manner the length of the thread on the input roll 5 so as to further control the speed of each thread by reducing the risk of slipping, but also possibly to reduce the length of the path before passing through the crimp rollers 4 to limit the risk of overlap between the son.

Préférentiellement, le dispositif d'alimentation 1 présente alors des moyens adaptés pour bloquer le rouleau d'entrée 5 dans la position choisie, ou encore des moyens élastiques contrant de façon autonome la force provoquée sur le rouleau d'entrée 5 par la tension du fil. Il peut s'agir préférentiellement d'une solution de vissage.Preferably, the feed device 1 then has means adapted to block the input roller 5 in the chosen position, or else elastic means autonomously controlling the force caused on the input roller 5 by the tension of the thread . It may be preferentially a screwing solution.

Selon une caractéristique additionnelle possible, le dispositif d'alimentation 1 présente des moyens de guidage pour le mouvement du rouleau d'entrée 5 dans sa trajectoire de balayage, apte à le guider dans un mouvement de rotation autour de l'axe du rouleau de frisure 4 duquel il est le plus proche. Ainsi, le rouleau d'entrée 5 et le rouleau de frisure 4 le plus proche restent en contact, éventuellement par l'intermédiaire des fils, même en changeant la position du rouleau d'entrée 5. En outre, cela permet de simplifier la construction en réexploitant les aménagement prévus pour la rotation du rouleau de frisure 4 concerné.According to a possible additional feature, the feed device 1 has guiding means for the movement of the input roller 5 in its scanning path, able to guide it in a rotational movement about the axis of the crimping roller. 4 from which he is closest. Thus, the input roller 5 and the closest crimping roller 4 stay in contact, possibly via the wires, even by changing the position of the input roller 5. In addition, this makes it possible to simplify the construction by re-exploiting the arrangements provided for the rotation of the crimping roller 4 concerned.

Avantageusement, le rouleau d'entrée 5 tourne en sens opposé et contre un des rouleaux de frisure 4, les moyens de guidage conservant donc le contact entre ces deux rouleaux. Ainsi, le rouleau d'entrée 5 peut être déplacé tout en le faisant rouler à la surface du rouleau de frisure 4 contre lequel il est en contact. L'avantage de conserver un contact est, d'une part, d'augmenter, par le poids du rouleau d'entrée 5, la force exercée sur le rouleau de frisure 4 pour qu'il se presse davantage sur l'autre rouleau de frisure 4, et, d'autre part, d'utiliser le rouleau de frisure 4 comme un appui pour le rouleau d'entrée 5, et donc de simplifier le moyen de verrouillage en position du rouleau d'entrée 5. En effet, si le rouleau d'entrée 5 ne reste pas en contact du rouleau de frisure 4, le maintenir en position peut nécessiter de contrer d'importantes forces causées par son poids en porte à faux.Advantageously, the inlet roller 5 rotates in opposite directions and against one of the crimping rollers 4, the guide means thus maintaining contact between these two rollers. Thus, the input roll 5 can be moved while rolling on the surface of the crimping roll 4 against which it is in contact. The advantage of maintaining contact is, on the one hand, to increase, by the weight of the input roller 5, the force exerted on the crimping roll 4 so that it is more pressing on the other roll of crimp 4, and secondly, to use the crimping roller 4 as a support for the input roller 5, and thus to simplify the locking means in position of the input roller 5. Indeed, if the entry roller 5 does not remain in contact with the crimping roller 4, keep it in position may require to counter significant forces caused by its weight cantilever.

Dans des modes de réalisation particuliers, non illustrés, le dispositif d'alimentation 1 comprend un chassis d'entrée 8 décrit ci-dessous, auquel est fixé le rouleau d'entrée 5, est lui-même placé dans le support 3 avec des tenons adaptés, du type pion, téton, tige, goujon, ou autres, par exemple les extrémités axiales d'un arbre de fixation dudit chassis et autour duquel il peut tourner, ces tenons pouvant se déplacer dans des moyens de guidage réalisés sous forme de rainures 13 aménagées dans les flancs 10 du support 3. Ces rainures peuvent prendre la forme d'une ouverture aménagée dans chacun des flancs 10, ouverture oblonge, en courbe ou autre. Le chassis d'entrée 8 peut donc être mobile grâce à ces rainures, puis, une fois sa position idéale trouvée, être verrouillée en position, par vissage, par exemple.In particular embodiments, not illustrated, the feed device 1 comprises an inlet frame 8 described below, to which is fixed the inlet roller 5, is itself placed in the support 3 with tenons adapted, of the pin, pin, rod, stud, or other type, for example the axial ends of a fixing shaft of said frame and around which it can rotate, these pins being able to move in guide means made in the form of grooves 13 These grooves may take the form of an opening in each of the flanks 10 oblong opening, curved or otherwise. The input frame 8 can be movable thanks to these grooves, then, once its ideal position found, be locked in position, by screwing, for example.

Les bras du chassis d'entrée 8, au bout desquels est placé l'arbre dont l'extrémité forme le rouleau d'entrée 5, peuvent, de façon alternative ou complémentaire, présenter des rainures 13 dans lesquelles l'arbre de fixation du chassis d'entrée 8 peut circuler, comme le montre la figure 8, ou encore dans lesquelles l'arbre portant le rouleau d'entrée 5 peut se déplacer. Il est ainsi possible de modifier la distance entre l'axe de rotation du chassis d'entrée 8 et l'axe de rotation du rouleau d'entrée 5 qu'il porte.The arms of the input chassis 8, at the end of which is placed the shaft whose end forms the input roller 5, may, alternatively or additionally, present grooves 13 in which the chassis attachment shaft input 8 can flow, as shown in figure 8 or in which the shaft carrying the input roller 5 can move. It is thus possible to change the distance between the axis of rotation of the input frame 8 and the axis of rotation of the input roller 5 that it carries.

De façon générale, les moyens de guidage peuvent donc être sous la forme d'au moins une rainure 13 dans laquelle peut circuler une pièce, l'une ou l'autre étant reliée au rouleau d'entrée 5, éventuellement par l'intermédiaire du chassis d'entrée 8 qui le porte, l'autre étant reliée au support 3.In general, the guiding means may thus be in the form of at least one groove 13 in which a workpiece may circulate, one or the other being connected to the input roll 5, possibly via the input chassis 8 which carries it, the other being connected to the support 3.

Dans d'autres modes de réalisation non illustrés, légèrement différents des réalisations dans lesquelles le rouleau d'entrée 5 se déplace contre un rouleau de frisure 4, il peut être envisagé que le rouleau d'entrée 5 se déplace en changeant la distance qui sépare son propre axe de rotation de l'axe de rotation du rouleau de frisure 4 le plus proche. Ainsi, pour pouvoir varier la longueur du trajet que suit le fil sans être en contact avec un rouleau de frisure 4, le dispositif d'alimentation 1 présente des moyens de guidage pour le mouvement du rouleau d'entrée 5 dans sa trajectoire de balayage, apte à le guider dans un mouvement qui change sa distance par rapport au rouleau de frisure 4 le plus proche, par exemple une trajectoire linéaire perpendiculaire à l'axe de rotation des rouleaux de frisure 4.In other non-illustrated embodiments, slightly different from the embodiments in which the input roller 5 moves against a crimping roller 4, it can be envisaged that the input roller 5 will move by changing the distance that separates its own axis of rotation of the axis of rotation of the nearest crimping roller 4. Thus, to be able to vary the length of the path that follows the wire without being in contact with a crimping roller 4, the feed device 1 has guide means for the movement of the input roller 5 in its scanning path, adapted to guide it in a movement that changes its distance from the nearest crimping roller 4, for example a linear path perpendicular to the axis of rotation of the crimping rollers 4.

Les moyens de guidage peuvent alors être sous la forme d'une rainure dans laquelle peut circuler une pièce, l'une ou l'autre étant reliée au rouleau d'entrée 5, les moyens de guidage assurant toutefois ici un déplacement du rouleau d'entrée 5 linéaire et perpendiculaire au plan formé par les axes de rotation des deux rouleaux de frisure 4.The guiding means may then be in the form of a groove in which a workpiece may circulate, one or the other being connected to the input roll 5, the guide means here ensuring, however, a displacement of the roll of linear input and perpendicular to the plane formed by the axes of rotation of the two crimping rollers 4.

De façon générale, selon une caractéristique additionnelle possible, les moyens de guidage consistent essentiellement en une paire de rainures 13, aménagées dans un plan perpendiculaire à l'axe de rotation du rouleau d'entrée 5 et dans lesquelles peut circuler, à chaque fois, une portion de l'arbre portant le rouleau d'entrée 5 ou une pièce participant à maintenir ledit arbre, notamment le chassis d'entrée 8.In a general manner, according to an additional possible characteristic, the guiding means consist essentially of a pair of grooves 13, arranged in a plane perpendicular to the axis of rotation of the input roll 5 and in which can be circulated, in each case, a portion of the shaft carrying the input roller 5 or a part to maintain said shaft, including the input frame 8.

Selon une autre caractéristique additionnelle possible, au moins l'un des deux rouleaux de frisure 4 est monté sur un chassis de frisure 6, pivotant autour d'un axe par rapport au support 3, de sorte à pouvoir éloigner l'un de l'autre lesdits rouleaux de frisure 4, pour séparer les rouleaux de frisure 4 pour y faire passer des fils à l'occasion du lancement de la production, mais aussi pour pouvoir régler la force qui s'exerce entre les deux rouleaux de frisure 4.According to another possible additional feature, at least one of the two crimping rollers 4 is mounted on a crimping frame 6, pivoting about an axis relative to the support 3, so as to be able to move one of the other said crimping rollers 4, for separating the crimping rollers 4 to pass son on the occasion of the launch of production, but also to adjust the force exerted between the two crimping rollers 4.

Dans le mode de réalisation illustré, le chassis de frisure 6 prend essentiellement la forme de deux bras solidaires l'un de l'autre, à une extrémité desquels est monté l'un des rouleaux de frisure 4, et montés pivotant par rapport au support 3 au niveau de leur autre extrémité, l'axe de rotation dudit chassis de frisure 6 étant notamment parallèle aux rouleaux de frisure 4, décalé du plan formé par leurs axes de rotation, perpendiculairement à lui, par exemple vers l'arrière du dispositif d'alimentation 1 en direction des étapes avales du traitement de fil. Le chassis de frisure 6 est avantageusement monté aux extrémités axiales d'un arbre qui s'étend entre les flancs 10 du support 3 en les dépassant légèrement.In the illustrated embodiment, the crimp frame 6 essentially takes the form of two arms integral with one another, at one end of which is mounted one of the crimping rollers 4, and pivotally mounted relative to the support 3 at their other end, the axis of rotation of said crimping frame 6 being in particular parallel to the crimping rollers 4, offset from the plane formed by their axes of rotation, perpendicular to it, for example towards the rear of the device supply 1 to the downstream stages of the wire treatment. The crimp frame 6 is advantageously mounted at the axial ends of a shaft which extends between the flanks 10 of the support 3 by slightly protruding.

Comme le montre en particulier la figure 2, le rouleau de frisure 4 est placé en porte à faux d'un arbre reliant les deux bras du chassis de frisure 6 l'un à l'autre, hors des bras plutôt qu'entre eux. Le dispositif d'alimentation 1 présente aussi, comme le montre la figure 6, des moyens de butée 14 montés sur le support 3 pour limiter le mouvement du chassis de frisure 6, sous la forme d'un tampon contre lequel un de ses bras peut venir en appui, voire éventuellement aussi un amortisseur travaillant, par son positionnement excentrique par rapport à l'axe de rotation du chassis d'entrée 6, en cas de mouvement rotatif du chassis d'entrée 6.As shown in particular figure 2 , the crimping roller 4 is placed in cantilever of a shaft connecting the two arms of the crimping frame 6 to each other, out of the arms rather than between them. The feed device 1 also has, as shown in FIG. figure 6 , abutment means 14 mounted on the support 3 to limit the movement of the crimping frame 6, in the form of a buffer against which one of its arms can come into abutment, or possibly also a working damper, by its eccentric positioning with respect to the axis of rotation of the input frame 6, in case of rotary movement of the input frame 6.

Comme le montrent les figures annexées, le dispositif d'alimentation 1 comprend donc deux rouleaux de frisure 4 superposés, en contact et tournant en sens opposés, et, placé au dessus, un rouleau d'entrée 5. Une portion de fil, arrivant du râtelier, aboutit à la surface du rouleau d'entrée 5 au niveau d'une génératrice, est entraînée par lui le long d'une partie de sa circonférence, puis le quitte pour continuer son parcours à la surface d'un rouleau de frisure 4 jusqu'à arriver dans la zone de contact entre les deux rouleaux de frisure 4, à savoir jusqu'à arriver au niveau de la ligne de frisure. Il est donc important de garantir que les rouleaux superposés restent bien l'un contre l'autre, à savoir que le rouleau d'entrée 5 reste bien contre le rouleau de frisure 4 le plus proche, et que les rouleaux de frisure 4 sont bien pressés l'un contre l'autre. A défaut d'exercer une force de pression suffisante entre les trois rouleaux que comprend le dispositif d'alimentation 1, ceux-ci peuvent se décaler et permettre aux fils de se chevaucher, ce qui nuirait alors, comme déjà évoqué, à la qualité de la frisure et éventuellement aussi aux vitesses de circulation. Il peut donc être particulièrement avantageux, comme il va être décrit ci-dessous, d'aménager dans le dispositif d'alimentation 1 des moyens pour presser les rouleaux l'un contre l'autre.As shown in the accompanying figures, the feed device 1 therefore comprises two superposed crimping rollers 4, in contact and rotating in opposite directions, and, placed above, an inlet roll 5. A portion of wire, coming from the rack, ends at the surface of the input roller 5 at a generator, is driven by him along a portion of its circumference, then leaves it to continue its course on the surface of a crimping roller 4 until reaching the contact zone between the two crimping rolls 4, namely until reaching the level of the crimp line. It is therefore important to ensure that the superimposed rollers stay against each other, namely that the entry roll 5 remains well against the nearest crimping roll 4, and that the crimping rollers 4 are well pressed against each other. Failure to exert a sufficient pressure force between the three rollers that includes the feed device 1, they can shift and allow the son to overlap, which would then harm, as already mentioned, the quality of curl and possibly also at traffic speeds. It may therefore be particularly advantageous, as will be described below, to arrange in the feeder 1 means for pressing the rollers against each other.

Ainsi, selon une autre caractéristique additionnelle possible du dispositif d'alimentation 1, il présente un premier moyen de pression 7, apte par son action à presser l'un des rouleaux de frisure 4 contre l'autre, ce qui permet de contrôler la force exercée entre les deux rouleaux de frisure 4 et permettre ainsi un meilleur contrôle de la frisure créée.Thus, according to another possible additional feature of the feed device 1, it has a first pressure means 7, adapted by its action to press one of the crimping rollers 4 against the other, which allows to control the force exerted between the two crimping rollers 4 and thus allow better control of the crimp created.

Le premier moyen de pression 7 se présente préférentiellement sous la forme d'un levier pivotant par rapport au support 3, pouvant arriver au contact du chassis de frisure 6 au niveau d'une patte dédiée, préférentiellement placée entre les deux bras, au niveau de l'arbre au bout duquel se trouve le rouleau, ainsi que d'un actionneur qui agit sur ledit levier pour qu'il exerce une force sur le chassis de frisure 6 et qu'ainsi il rapproche de l'autre le rouleau de frisure 4 qui y est monté, par exemple un vérin s'appuyant sur le support 3.The first pressure means 7 is preferably in the form of a pivoting lever relative to the support 3, which can come into contact with the crimping frame 6 at a dedicated lug, preferably placed between the two arms, at the level of the shaft at the end of which is the roller, as well as an actuator which acts on said lever so that it exerts a force on the crimping frame 6 and thus brings the crimping roller 4 closer to the other mounted thereon, for example a jack resting on the support 3.

Un deuxième moyen de pression 9, pour contrôler la force qu'exerce le rouleau d'entrée 5 sur le rouleau de frisure 4, est décrit plus bas.A second pressure means 9 for controlling the force exerted by the input roller 5 on the crimping roller 4 is described below.

Concernant le montage du au moins un rouleau d'entrée 5, et selon une caractéristique additionnelle possible du dispositif d'alimentation 1, le rouleau d'entrée 5 est monté sur un chassis d'entrée 8, pivotant autour d'un axe par rapport au support 3, de sorte à pouvoir éloigner le rouleau d'entrée 5 du rouleau de frisure 4 le plus proche, avec lequel il est éventuellement normalement en contact, pour faire passer en toute sécurité du fil entre eux deux à l'occasion du lancement de la production. Un des avantages de cette caractéristique est de pouvoir séparer le rouleau d'entrée 5 des rouleaux de frisure 4 et passer des fils entre eux à l'occasion de la mise en marche, mais aussi de pouvoir contrôler la pression éventuelle avec laquelle le rouleau d'entrée 5 agit sur le rouleau de frisure 4, comme décrit plus loin.Regarding the mounting of the at least one input roller 5, and according to a possible additional feature of the feed device 1, the input roller 5 is mounted on an input frame 8, pivoting about an axis relative to to the support 3, so as to be able to move the input roller 5 of the nearest curling roller 4, with which it is possibly normally in contact, to safely pass the wire between them at the launch from production. One of the advantages of this characteristic is that it is possible to separate the input roller 5 from the crimping rollers 4 and to pass wires between them at the time of starting, but also to be able to control the possible pressure with which the roll of Inlet 5 acts on the crimping roll 4, as will be described later.

Dans le mode de réalisation illustré dans les figures annexées, le chassis d'entrée 8 prend avantageusement essentiellement la forme de deux bras solidaires l'un de l'autre, à une extrémité desquels se trouve le rouleau d'entrée 5 en porte à faux au bout d'un arbre, et montés pivotant par rapport au support 3 au niveau de leur autre extrémité, l'axe de rotation dudit chassis d'entrée 8 étant notamment parallèle aux rouleaux de frisure 4, décalé du plan formé par leurs axes de rotation, perpendiculairement à lui, par exemple vers l'arrière du dispositif d'alimentation 1, en direction des étapes avales du traitement.In the embodiment illustrated in the accompanying figures, the entry frame 8 advantageously takes the form of essentially two arms integral with one another, at one end of which is the cantilevered entry roller 5 at the end of a shaft, and pivotally mounted relative to the support 3 at their other end, the axis of rotation of said inlet frame 8 being in particular parallel to the crimping rollers 4, offset from the plane formed by their axes of rotation, perpendicular to it, for example towards the rear of the feed device 1, towards the downstream steps of the treatment.

Le rouleau d'entrée 5 est notamment placé en porte à faux d'un arbre reliant les deux bras du chassis d'entrée 8 l'un à l'autre, hors des bras plutôt qu'entre eux.The input roll 5 is in particular placed in cantilever of a shaft connecting the two arms of the entrance frame 8 to each other, out of the arms rather than between them.

Le dispositif d'alimentation 1 présente aussi, comme le montre la figure 6 des moyens de butée 14 montés sur le support 3 pour limiter le mouvement du chassis d'entrée 8, sous la forme d'un tampon contre lequel un de ses bras peut venir en appui, voire éventuellement aussi un amortisseur travaillant en cas de mouvement du chassis d'entrée 8.The feed device 1 also has, as shown in FIG. figure 6 stop means 14 mounted on the support 3 to limit the movement of the input frame 8, in the form of a buffer against which one of its arms may come into abutment, or possibly also a damper working in case of movement of the entrance frame 8.

Dans de tels cas où le rouleau d'entrée 5 est monté sur un chassis d'entrée 8, la mobilité dudit rouleau par rapport aux rouleaux de frisure 4 aux fins du réglage de la longueur d'entraînement et de trajet libre entre le râtelier et les rouleaux de frisure 4 est assurée par la mobilité du chassis d'entrée 8 lui-même dans le support 3, comme déjà évoqué plus haut, grâce à un jeu de rainures 13. Ainsi, selon une caractéristique additionnelle possible, le support 3 présente une paire de rainures 13, formant moyen de guidage et dans lesquelles le chassis d'entrée 8 peut circuler, de sorte à imprimer au rouleau d'entrée 5 sa trajectoire de balayage. La mobilité du rouleau d'entrée 5 est donc assurée ici par la mobilité toute entière du chassis d'entrée 8, comme l'illustre la figure 7.In such cases where the input roller 5 is mounted on an input frame 8, the mobility of said roller with respect to the crimping rollers 4 for the purpose of adjusting the drive length and free path between the rack and the crimping rollers 4 is ensured by the mobility of the entry frame 8 itself in the support 3, as already mentioned above, thanks to a set of grooves 13. Thus, according to an additional possible feature, the support 3 presents a pair of grooves 13, forming guide means and in which the entry frame 8 can move, so as to print the input roller 5 scan path. The mobility of the input roll 5 is therefore ensured here by the entire mobility of the input frame 8, as illustrated by FIG. figure 7 .

Selon une caractéristique additionnelle possible, le dispositif d'alimentation 1 présente un deuxième moyen de pression 9, apte, par son action, à presser le rouleau d'entrée 5 contre le rouleau de frisure 4 le plus proche. Ce deuxième moyen de pression 9 se présente par exemple sous la forme d'un levier pivotant par rapport au support 3, pouvant arriver au contact du chassis d'entrée 5 au niveau d'une patte dédiée, préférentiellement placée entre ses deux bras, ainsi que d'un actionneur qui agit sur ledit levier pour qu'il exerce une force sur le chassis de frisure 4 et qu'ainsi il rapproche le rouleau d'entrée 5 contre le rouleau de frisure 4 le plus proche.According to an additional possible feature, the feed device 1 has a second pressure means 9, able, by its action, to press the input roller 5 against the nearest crimping roller 4. This second pressure means 9 is for example in the form of a pivoting lever relative to the support 3, which can come into contact with the entry frame 5 at a dedicated tab, preferably placed between its two arms, and than an actuator which acts on said lever so that it exerts a force on the crimping frame 4 and so it brings the input roller 5 closer to the nearest crimping roller 4.

Selon une caractéristique additionnelle possible, en particulier concernant les premier et deuxième moyen de pression 7, 9, le levier du premier moyen de pression 7 et le levier du deuxième moyen de pression 9 sont montés pivotant sur le même arbre,
l'actionneur du premier moyen de pression 7 et l'actionneur du deuxième moyen de pression 9 étant montés en série, de sorte que l'actionneur du deuxième moyen de pression 9 conditionne à lui seul la force entre le rouleau d'entrée 5 et le rouleau de frisure 4 le plus proche.According to an additional possible characteristic, in particular concerning the first and second pressure means 7, 9, the lever of the first pressure means 7 and the lever of the second pressure means 9 are pivotally mounted on the same shaft,
the actuator of the first pressure means 7 and the actuator of the second pressure means 9 being connected in series, so that the actuator of the second pressure means 9 alone conditions the force between the input roller 5 and the nearest crimping roller 4.

Comme le montre la figure 5, l'actionneur du premier moyen de pression 7 peut, par exemple, prendre la forme d'un vérin pneumatique dont une extrémité est fixée au support 3, l'autre extrémité agissant sur le levier du premier moyen de pression, et formant la base d'ancrage d'un ressort constituant l'actionneur du deuxième moyen de pression 9 et qui agit sur le levier du deuxième moyen de pression 9. Les deux leviers sont en particulier montés pivotant sur un arbre situé, par rapport au plan formé par les axes des rouleaux de frisure 4, de l'autre côté de l'axe de rotation du chassis de frisure 6 et/ou du chassis d'entrée 8.As shown in figure 5 , the actuator of the first pressure means 7 may, for example, take the form of a pneumatic cylinder whose one end is fixed to the support 3, the other end acting on the lever of the first pressure means, and forming the base anchoring a spring constituting the actuator of the second pressure means 9 and acting on the lever of the second pressure means 9. The two levers are in particular pivotally mounted on a shaft located, relative to the plane formed by the axes of the crimping rollers 4, on the other side of the axis of rotation of the crimping frame 6 and / or of the entry frame 8.

Un tel montage en série permet notamment de contrôler indépendamment les forces qui s'exercent sur un rouleau de frisure 4, par l'autre ou par le rouleau d'entrée 5, mais aussi de simplifier la construction.Such a series connection allows in particular to independently control the forces exerted on a crimping roller 4, the other or by the input roller 5, but also to simplify the construction.

En outre, selon une caractéristique additionnelle possible, permettant de simplifier la construction, le chassis de frisure 6 porte le rouleau de frisure 4 le plus proche du rouleau d'entrée 5,
le chassis d'entrée 8 et le chassis de frisure 6 étant montés pivotant autour d'un même axe, montés sur un même arbre que comprend le dispositif d'alimentation 1 et monté sur le support 3, le chassis d'entrée 8 étant placé à l'extérieur de la paire de flancs 10, le chassis de frisure 6 étant placé entre les deux flancs 10.In addition, according to one additional feature possible, making it possible to simplify the construction, the crimping frame 6 carries the crimping roller 4 closest to the input roller 5.
the entrance frame 8 and the crimping frame 6 being pivotally mounted about the same axis, mounted on the same shaft as comprises the feed device 1 and mounted on the support 3, the input frame 8 being placed outside the pair of flanks 10, the crimp frame 6 being placed between the two flanks 10.

Comme il a été évoqué plus haut, un des buts de l'invention est aussi de garantir que les fils évoluent tous à la même vitesse à l'entrée de la boîte à friser 2, ce qui rend plus fiable le bobinage en aval du traitement. Pour ce faire, comme au moins le rouleau d'alimentation 5 et le rouleau de frisure 4 contre lequel il se trouve servent à entraîner le fil, il est important de garantir qu'il aient tous les deux la même vitesse de rotation. En outre, une éventuelle variation de vitesse peut provoquer des effets néfastes sur le fil, provenant des efforts mécaniques, type cisaillement, traction ou compression, qui ont alors lieu lorsque le fil passe du rouleau d'alimentation 5 au rouleau de frisure 4 contre lequel il se trouve. De plus, pour éviter les mêmes phénomènes entre les rouleaux de frisure 4, il est aussi important de garantir que les deux rouleaux de frisure 4 tournent à la même vitesse. Des entraînements par friction de l'un des rouleaux, motorisé, à au moins l'autre des deux rouleaux sont donc à éviter car la présence des fils entre eux réduit forcément la pression de contact, qui doit être suffisante pour assurer la bonne transmission. Il est donc préférable de contrôler la rotation de chaque rouleau, ou au moins d'assurer une transmission de l'un à au moins l'autre par cran, du type courroie crantée, engrenage, ou autres. Si un des rouleaux doit être mis en mouvement par le mouvement d'un autre, il est préférable d'aménager la transmission en dehors de la zone dans laquelle se trouvent normalement les fils, de sorte à éviter que leur présence ne réduise la force de contact, comme évoqué ci-dessus.As has been mentioned above, one of the aims of the invention is also to guarantee that the yarns all evolve at the same speed at the entrance of the curling box 2, which makes the winding downstream of the treatment more reliable. . To do this, since at least the feed roller 5 and the crimping roller 4 against which it is used to drive the wire, it is important to ensure that both have the same speed of rotation. In addition, any variation in speed may cause adverse effects on the yarn, resulting from mechanical forces such as shearing, pulling or compression, which then take place when the thread passes from the feed roller 5 to the crimping roller 4 against which it turns out that. In addition, to avoid the same phenomena between the crimping rollers 4, it is also important to ensure that the two crimping rollers 4 rotate at the same speed. Friction drives of one of the rollers, motorized, at least the other of the two rollers are therefore to be avoided because the presence of son between them necessarily reduces the contact pressure, which must be sufficient to ensure good transmission. It is therefore preferable to control the rotation of each roll, or at least to ensure a transmission from one to at least the other by notch, toothed belt type, gear, or others. If one of the rollers is to be moved by the movement of another, it is preferable to arrange the transmission outside the area where the wires are normally located, so as to prevent their presence from reducing the force of the contact, as mentioned above.

Généralement, les rouleaux de frisure 4 sont mis en mouvement par un moteur, qui agit sur les deux rouleaux simultanément, ou sur un seul des deux, l'autre étant mis en rotation par son propre moteur ou par entraînement depuis l'unique rouleau motorisé.Generally, the crimping rollers 4 are set in motion by a motor, which acts on the two rollers simultaneously, or on only one of the two, the other being rotated by its own motor or by driving from the single motorized roller. .

Ainsi, selon une caractéristique additionnelle possible du dispositif d'alimentation 1, contribuant à garantir une vitesse homogène du fil pendant tout son trajet, ledit dispositif comprend un moyen d'entraînement 11 pour entraîner en rotation de façon contrôlée le rouleau d'entrée 5,
ledit moyen agissant hors de la zone circonférentielle de présence des fils sur le rouleau d'entrée 5, en particulier au niveau de l'arbre au bout duquel le rouleau d'entrée 5 est monté.Thus, according to a possible additional feature of the feed device 1, helping to guarantee a homogeneous speed of the yarn during its entire path, said device comprises a drive means 11 for rotating in a controlled manner the input roller 5,
said means acting outside the circumferential zone of presence of the wires on the input roller 5, in particular at the level of the shaft at the end of which the input roller 5 is mounted.

Le dispositif d'alimentation 1 comprend notamment un moteur, pour créer le mouvement de rotation des rouleaux de frisure 4, ledit moteur provoquant aussi la rotation du rouleau d'entrée 5, directement en le montant sur le rouleau d'entrée 5 lui-même, ou indirectement avec un entraînement par cran, comme un engrenage et/ou au moins une courroie crantée, depuis son arbre de sortie ou un autre rouleau qu'il motorise directement.The feed device 1 comprises in particular a motor, to create the rotational movement of the crimping rollers 4, said motor also causing the rotation of the input roller 5, directly by mounting it on the input roll 5 itself. or indirectly with a notch drive, such as a gear and / or at least one toothed belt, from its output shaft or another roller which it motorises directly.

Dans des modes de réalisation particuliers, le moyen d'entraînement 11 comprend une courroie crantée 12, agissant sur l'arbre du rouleau d'entrée 5 et entraînée par un moteur, ladite courroie crantée 12 étant en particulier montée sur une roue crantée entraînée directement par le moteur et monté sur l'un des rouleau de frisure 4, et entraînant aussi en rotation l'autre rouleau de frisure 4 grâce à des roues crantées qu'il présente.In particular embodiments, the drive means 11 comprises a toothed belt 12, acting on the input roller shaft 5 and driven by a motor, said toothed belt 12 being in particular mounted on a notched wheel driven directly. by the motor and mounted on one of the crimping roller 4, and also causing the other crimping roll 4 to rotate by means of toothed wheels which it has.

Afin de faciliter la mise en place, et selon une caractéristique additionnelle possible, le moyen d'entraînement 11 comprend une poulie que contourne la courroie crantée 12 et placée de façon excentrique sur un levier pivotant soumis à l'action d'un ressort, une extrémité dudit ressort étant fixée au support 3 et l'autre audit levier, ayant pour effet, par la rotation du levier et l'éloignement de la poulie par rapport aux rouleaux, de garantir la tension de la courroie même en cas d'écartement entre les rouleaux. Cette poulie, monté sur le levier pivotant sur lequel agit un ressort, forme donc un moyen de maintien de la tension de la courroie crantée 12, qui évite de perdre l'accrochage mécanique en cas de maintenance.To facilitate placement, and according to an additional possible feature, the drive means 11 comprises a pulley which bypasses the toothed belt 12 and eccentrically placed on a pivoting lever subjected to the action of a spring, a end of said spring being fixed to the support 3 and the other to said lever, having the effect, by the rotation of the lever and the distance of the pulley relative to the rollers, to ensure the tension of the belt even in case of spacing between Rolls; Coils. This pulley, mounted on the pivoting lever on which a spring acts, thus forms a means for maintaining the tension of the toothed belt 12, which avoids losing the mechanical attachment in the event of maintenance.

Enfin, les figures annexées illustrent que, dans ce mode de réalisation, le rouleau d'entrée 5 et les rouleaux de frisure 4 sont montés en porte à faux l'un au dessus de l'autre,
le rouleau d'entrée 5 étant maintenu à l'extrémité d'un arbre monté dans un chassis d'entrée 8,
l'un des rouleaux de frisure 4 étant maintenu à l'extrémité d'un arbre monté dans un chassis de frisure 6
l'autre rouleau de frisure 4 étant maintenu à l'extrémité d'un arbre monté dans le support 3,
le chassis d'entrée 8 et le chassis de frisure 6 se trouvant dans le prolongement du support 3.Finally, the appended figures illustrate that, in this embodiment, the input roller 5 and the crimping rollers 4 are mounted cantilevered one above the other,
the input roller 5 being held at the end of a shaft mounted in an entrance frame 8,
one of the crimping rollers 4 being held at the end of a shaft mounted in a crimping frame 6
the other crimping roll 4 being held at the end of a shaft mounted in the support 3,
the entrance frame 8 and the crimping frame 6 being in the extension of the support 3.

Un tel montage permet en particulier de ne pas modifier l'architecture des machines de traitement existantes, et donc d'installer le dispositif d'alimentation 1 sans revoir la conception en profondeur. Le support 3 et ses éléments peuvent ainsi être placés sans interférer avec la circulation prévue des fils depuis le râtelier jusqu'à la boîte à friser 2.Such an arrangement makes it possible in particular not to modify the architecture of the existing processing machines, and therefore to install the feed device 1 without reviewing the design in depth. The support 3 and its elements can thus be placed without interfering with the planned circulation of the wires from the rack to the curling box 2.

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et représenté aux dessins annexés. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments, par combinaison différente de tout ou partie des caractéristiques décrites ci-dessus, ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention tel que défini par les revendications.Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications are possible, in particular from the point of view of the constitution of the various elements, by different combination of all or part of the characteristics described above, or by substitution of technical equivalents, without departing from the scope of protection of the invention as defined by the claims.

Claims (14)

  1. Device for feeding (1) thread into a stuffer box (2), for mounting in a thread processing line downstream of a yarn supply creel and upstream of a means for thermally fixing the crimping formed on the thread by said stuffer box (2), said feed device (1) comprising a fixed support (3), the input to the stuffer box (2) being formed by a pair of parallel crimping rollers (4) designed to turn in opposite directions relative to one another in a crimping line, to send into the stuffer box (2) a thread taken between the two,
    the feeding device (1) being characterised in that it also comprises at least one feed roller (5), arranged upstream of said crimping rollers (4) parallel to the latter and on which the thread circulates prior to being taken between the latter, the at least one feed roller (5) being mobile so as to be able to move its axis of rotation in a sweeping trajectory, whilst remaining parallel to the axes of rotation of the crimping rollers (4).
  2. Thread feed device (1) according to claim 1, characterised in that
    it comprises guiding means for moving the feed roller (5) in its sweeping trajectory, able to guide it in a rotational movement about the axis of the crimping roller (4) to which it is the closest.
  3. Feed device (1) according to claim 2, characterised in that
    the guiding means consist essentially of a pair of grooves (13), arranged in a plane perpendicular to the axis of rotation of the feed roller (5) and in which, every time, a portion of the shaft supporting the feed roller (5) or a part used for holding said shaft can circulate.
  4. Feed device (1) according to any one of claims 1 to 3, characterised in that
    at least one of the two crimping rollers (4) is mounted on a crimping frame (6), pivoting about an axis relative to the support (3), so as to be able to move apart said crimping rollers (4) from one another.
  5. Feed device (1) according to claim 4, characterised in that it has a first pressing means (7), capable in action of pressing one of the crimping rollers (4) against the other.
  6. Feed device (1) according to any one of claims 1 to 5, characterised in that
    the feed roller (5) is mounted on an entry frame(8), pivoting around an axis relative to the support (3), so as to be able to move apart the feed roller (5) of the closest crimping roller (4), with which it is possibly normally in contact, in order to pass the thread securely between them both when launching production.
  7. Feed device (1) according to claim 6 and any one of claims 1 to 3, characterised in that
    the support (3) has a pair of grooves (13), forming a guiding means and in which the entry frame (8) can circulate so as to impress on the feed roller (5) its sweeping trajectory.
  8. Feed device (1) according to any one of claims 6 or 7, characterised in that
    it has a second pressing means (9) which is able by its action to press the feed roller (5) against the closest crimping roller (4).
  9. Feed device (1) according to claim 5 and according to claim 8, characterised in that
    the lever of the first pressing means (7) and the lever of the second pressing means (9) are mounted pivotably on the same shaft,
    the activator of the first pressing means (7) and the activator of the second pressing means (9) being mounted in series, such that the activator of the second pressing means (9) itself alone provides the force between the feed roller (5) and the closest crimping roller (4).
  10. Feed device (1) according to any one of claims 4 or 5 and according to any one of claims 6 to 9, characterised in that the crimping frame (6) supports the closest crimping roller (4) of the feed roller (5),
    the entry frame (8) and the crimping frame(6) being mounted pivotably about the same axis, mounted on a same shaft that comprises the feed device (1) and mounted on the support (3).
  11. Feed device (1) according to any one of claims 1 to 10, characterised in that
    it comprises a drive means (11) for driving in rotation the entry roller (5) in a controlled manner,
    said means acting outside the circumferential area of the presence of threads on the entry roller (5).
  12. Feed device (1) according to claim 11, characterised in that the drive means (11) comprises a toothed belt (12), acting on the shaft of the entry roller (5) and driven by a motor.
  13. Feed device (1) according to claim 12, characterised in that
    the drive means (11) comprises a pulley that circumvents the toothed belt (12) placed in an eccentric manner on a pivoting lever subjected to the action of a spring, one end of said spring being fixed to the support (3) and the other to said lever, with the effect, by means of the rotation of the lever and the distancing of the pulley relative to the rollers, of guaranteeing the tension of the belt even in the case of a distancing between the rollers.
  14. Feed device (1) according to any one of claims 1 to 13, characterised in that
    the feed roller (5) and the crimping rollers (4) are cantilevered above one another,
    the feed roller (5) being held at the end of a shaft mounted in an entry frame (8),
    one of the crimping rollers (4) being held at the end of a shaft mounted in a crimping frame (6)
    the other crimping roller (4) being held at the end of a shaft mounted in the support (3),
    the entry frame (8) and the crimping frame (6) being located in the extension of the support (3).
EP13305505.3A 2013-04-18 2013-04-18 Device for feeding a stuffer box with a feeding roller Active EP2792772B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13305505.3A EP2792772B1 (en) 2013-04-18 2013-04-18 Device for feeding a stuffer box with a feeding roller

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Application Number Priority Date Filing Date Title
EP13305505.3A EP2792772B1 (en) 2013-04-18 2013-04-18 Device for feeding a stuffer box with a feeding roller

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EP2792772B1 true EP2792772B1 (en) 2016-09-07

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3048193B1 (en) * 2015-01-20 2019-07-31 SUPERBA (Société par Actions Simplifiée) Roller for wire-feeding device
CN114457495B (en) * 2022-01-20 2023-06-27 嘉兴市鸣业纺织有限公司 Weft density self-adjusting electronic reeling warp let-off device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL122171C (en) * 1959-01-08
BE635205A (en) * 1962-07-19
US3781952A (en) * 1962-08-13 1974-01-01 R Stanley Textile treatment method and apparatus
GB1085240A (en) * 1963-11-19 1967-09-27 Ici Ltd Improvements in or relating to the drawing and bulking of synthetic polymer yarns
US3353767A (en) * 1965-08-03 1967-11-21 Bancroft & Sons Co J Yarn package
US3507018A (en) * 1968-01-24 1970-04-21 Bancroft & Sons Co J Double eccentric roll mounting
GB1268883A (en) * 1969-07-30 1972-03-29 Bancroft & Sons Co J Improved stuffer crimper
US3685109A (en) * 1970-06-11 1972-08-22 Bancroft & Sons Co J Small denier stuffer crimper and method
US3707299A (en) * 1971-03-26 1972-12-26 Bancroft & Sons Co J Stuffer crimper with driven choke members for pressure control in the crimping zone
US8046885B1 (en) 2008-06-02 2011-11-01 Superba Apparatus and methods for crimping textile threads

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