EP1323853B1 - Method and apparatus for crimping yarns - Google Patents

Method and apparatus for crimping yarns Download PDF

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Publication number
EP1323853B1
EP1323853B1 EP02360336A EP02360336A EP1323853B1 EP 1323853 B1 EP1323853 B1 EP 1323853B1 EP 02360336 A EP02360336 A EP 02360336A EP 02360336 A EP02360336 A EP 02360336A EP 1323853 B1 EP1323853 B1 EP 1323853B1
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EP
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Prior art keywords
chamber
crimping
scrapers
guiding
setting
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EP02360336A
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German (de)
French (fr)
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EP1323853A1 (en
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Philippe Massotte
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Superba SAS
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Superba SAS
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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 the textile industry, in particular for treating threads by crimping, and relates to a method of crimping of threads.
  • the invention also relates to a device for setting work of this process.
  • the crimping of textile fibers or threads by using devices called curling boxes is carried out according to a known method.
  • This method consists in directing the wires to be curled between two drive rollers which force said wires into a compaction channel.
  • This channel of compaction is generally provided at its end opposite to the rollers a check valve to ensure the compaction of the wires to the inside of the curling box.
  • the valve or similar retaining device has intended to increase the friction of fibers or threads on the walls of the compacting box to the point where the material to be curled will lose, at its output from the drive rollers, its presentation in longitudinal form to take a wavy presentation generated by the downstream friction of wires on the walls of the curling box.
  • the crimp obtained is called primary crimp and this crimp can be very regular, but if the compaction chamber has a volume or unsuitable geometry, the primary crimp will tend to turn into a secondary crimp which will have the effect of compacting the material differently and, therefore, will tend to disappear the crimp regular primary.
  • curling boxes use a fluid thermal, namely steam, for the production of all or part of the crimp.
  • This vapor is then injected through orifices located on the walls from the compaction chamber so that the material to be crimped tends to be kicked out of the curling box.
  • Curling machines implementing such a method are notably known from FR-A-2 652 359 and US-A-5 647 109. In these machines, it is impossible to create and maintain the regular crimp of fibers or yarns, because the geometry of the compacting box and / or the heat treatment system cause its destruction.
  • the object of the present invention is to overcome these drawbacks by proposing a method and a device for crimping wires allowing obtaining a perfectly regular crimp, without crimp formation secondary or parasitic.
  • the wire crimping process is characterized in that that it consists essentially in passing the wires through a first zone compacting a crimping box, to obtain a regular crimp, then to realize, in a second area having a free space delimited on at least one side thread ribbon, a prefix for regular crimping obtained, as well as a guide of the latter, up to the exit of the box curl, using the prefixing fluid.
  • the invention also relates to a device for setting work of this process, in the form of a curling box provided a compaction enclosure comprising drive rollers cooperating with doctor blades and a pre-fixing and wire guiding enclosure crimped, characterized in that the cross-section of the compaction enclosure is adjustable and in that the prefixing and guiding enclosure has a section larger than that of the ribbon of crimped threads obtained, the space or spaces additional delimited around said ribbon being in relation to means for delivering the fixing fluid.
  • Figure 1 of the accompanying drawings shows, by way of example, a device for the crimping of fibers or textile threads in the form of a curling box provided with an enclosure of compaction 1 comprising rollers 2 for driving cooperating with doctor blades 3 ( Figures 3 and 4) and an enclosure 5 for fixing and guiding the wires curly 6.
  • this device implements a process which essentially involves passing the wires 4 through a first compaction zone of a curling can, to obtain a regular crimp 6, then to perform, in a second zone 5, having a 5 'free space delimited on at least one side of the ribbon of wires, a prefixing regular crimp 6 obtained, as well as guiding of the latter, up to the outlet of the curling can, through the fluid prefixing.
  • the adjustment and the initial crimping are carried out by retaining the end of the fibers or threads engaged in the curling box, downstream of the enclosure compaction 1.
  • the fibers or threads which pass between the rollers 2 and which are pushed between the doctor blades 3, are first retained in the prefixing and guiding enclosure 5 in order to achieve a crimp initial corresponding to the desired crimp characteristics.
  • the duration retaining fibers or yarns for the start of the crimping of a ribbon is determined according to the mechanical properties of the fibers or son and those of the desired crimp and are advantageously listed on a table or abacus allowing rapid adjustment of the curling box for each type of textile fiber or yarn.
  • the prefixing of the regular crimp 6 obtained, as well as the guiding of this last, up to the exit of the curling box are made by means of the prefixing fluid which acts on at least part of the section of the crimped ribbon obtained, in a free space of the prefixing and guiding.
  • the device which present in the form of a curling box is characterized in that the section of the compaction enclosure 1 is adjustable and in that the enclosure 5 of prefixing and guiding has a section larger than that of the ribbon crimped yarn 6 obtained, the additional space or spaces delimited around of said ribbon 6 being in relation to the means for delivering the fluid fixing.
  • the means of adjustment 7 allowing the mutual approximation of the doctor blades 3 is shown at FIG. 4 of the appended drawings in the form of a threaded element with reverse pitch, but may very well be in the form of a pair of cylinders ordered in synchronism or an articulated linkage bringing the scrapers apart and spreading them apart 3.
  • the means 8 which is intended to carry out the displacement of the entry doctor blades in the direction of the drive rollers 2 or in the opposite direction of these drive rollers 2, is simply shown in Figure 4 by a center line and can also be either in the form of a screw drive and nut acting on a guide and support means common to the doctor blade 3, either individual and synchronized doctor blades.
  • the spacing adjustment of the doctor blades 3 and the adjustment of the latter relative to the drive rollers 2 are performed by a centralized control element synchronizing the two adjustment movements. Indeed, it is necessary to perform simultaneously or almost simultaneously adjusting the opening of the doctor blades 3 and their positioning relative to the drive rollers 2, in order to be able to quickly have an optimum setting of these.
  • the compaction enclosure 1 leads to the enclosure 5 of prefixing and guiding the regular crimp 6 obtained, which has a inner cross section greater than that of said crimp 6 and which is provided on its internal faces with means for delivering the fixing fluid, in the form of nozzles or the like, not shown.
  • the internal section of the enclosure 5 is arranged so as to delimit on at at least one side of the ribbon of crimped threads 6 obtained a free space 5 ′, of any geometry.
  • This space 5 allows an expansion of the fluid of prefixing without the latter exerting strong pressure on the ribbon of wires crimps 6, this pressure being, however, sufficient to guide so dynamic said ribbon in enclosure 5, that is to say to promote its progression in said enclosure towards the exit of the latter on a conveying or receiving device 9 (FIG. 1).
  • the internal section of the enclosure 5 can be of the regular polygon type or irregular and delimit a space 5 'only on one side of the ribbon of crimped wire 6 or on two sides of this ribbon.
  • the internal section of the enclosure 5 will have a conformation such that spaces 5 'in height slightly less than the height of the ribbon of crimped threads 6 are delimited by on either side of said ribbon 6 to press their edges against the corners of the latter ( Figures 8 to 11).
  • the section of the ribbon of crimped yarn can also be adjustable in height by providing, at the doctor blades 3, means of sliding guide movable between said doctor blades, in the direction of their vertical axis.
  • a vertical axis of doctor blades which in fact correspond to the direction of the axes of the rollers 2.
  • this notion of verticality of the doctor blades is only intended to explain the positioning and movement of means for adjusting the height of the ribbon of crimped threads 6 relative to the width of this ribbon, it being understood that the curling box can as well present an orientation of the axes of the vertical drive rollers, than a horizontal orientation.
  • the device is further provided at the end of the prefixing and guiding enclosure 5 opposite to that connected to the compacting enclosure 1, a means 10 for retaining fibers or yarns at the start of a crimping operation.
  • This means 10 can advantageously be constituted in the form of a valve (FIG. 5) mounted in front of the outlet of said enclosure 5 and which can be actuated by via a motorization device not shown, the opening and closing is preferably carried out via a programmable controller and / or by a command to manual impulse.
  • a motorization device can in particular be in the form of a rotary actuator or of an actuator acting on the axis of the valve by through a lever or even in the form of an electric motor not step by step.
  • the programmable controller capable of controlling such a valve is also of a type known to those skilled in the art and can, for example, take into account pre-established digital data by setting learning. So, it suffices, firstly, to realize for each type of product used a prior crimping test, in order to determine the adjustment characteristics enabling values to be obtained desired crimping depending on the title of the product to be treated and the speed of scrolling the wires and plotting this data on a table or chart, to then simply program the machine according to the data of product and final material to be obtained.
  • the pre-setting can, for example example, be made by actuating the valve 10 by means of a manual impulse control.
  • valve 10 At the start of a wire or fiber crimping operation, the machine starts automatically with valve 10 in the closed position for a predetermined period corresponding to the production of a crimp initial primary corresponding to the crimp to be obtained, then said valve 10 is automatically opened and the crimping operation can continue normally.
  • the upper and lower walls of the containment prefixing and guiding 5 can advantageously be equipped with a integrated heating, electric or hot fluid circulation means.
  • the transparent wall may be provided, in addition, with a optical means for monitoring the product obtained cooperating with a electronic comparison device.
  • a optical means for monitoring the product obtained cooperating with a electronic comparison device Such an installation of opto-electronic surveillance, which uses known means of the skilled person is not described in more detail. This installation allows to carry out checks by comparison with data stored in an electronic memory and, in conjunction with a programmable controller or with a computerized control and central control to act on the operating parameters of the machine.
  • the invention it is possible to crimp wires in a curling box with perfect control of the regularity of the crimp, the latter being exposed during part of its passage in the box to curl with a prefixing fluid simultaneously providing guidance dynamic of the ribbon of crimped wires up to the exit of the crimping box, this in using at least one space occupied only by the prefixing.
  • the geometry of the enclosure 5 for prefixing and guidance makes it possible to perfectly preserve the primary crimp generated in the compaction chamber 1.
  • the invention also allows, by implementation specially ordered during the crimping of the valve 10 forming the means retainer, to achieve an irregular crimp, namely primary and secondary, as is possible with known curling machines currently.

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

Description

La présente invention concerne le domaine de l'industrie textile, en particulier du traitement de fils par frisage, et a pour objet un procédé de frisage de fils.The present invention relates to the field of the textile industry, in particular for treating threads by crimping, and relates to a method of crimping of threads.

L'invention a également pour objet un dispositif pour la mise en oeuvre de ce procédé.The invention also relates to a device for setting work of this process.

Le frisage de fibres ou de fils textiles par utilisation de dispositifs dénommés boítes à friser s'effectue selon un procédé connu. Ce procédé consiste à diriger les fils à friser entre deux rouleaux d'entraínement qui forcent lesdits fils dans un canal de compactage. Ce canal de compactage est généralement muni à son extrémité opposée aux rouleaux d'un clapet de retenue permettant d'assurer le compactage des fils à l'intérieur de la boíte à friser. Le clapet ou dispositif de retenue analogue a pour but d'augmenter la friction des fibres ou des fils sur les parois de la boíte de compactage jusqu'au point où le matériau à friser va perdre, à sa sortie des rouleaux d'entraínement, sa présentation sous forme longitudinale pour prendre une présentation ondulée générée par le frottement aval des fils sur les parois de la boíte à friser.The crimping of textile fibers or threads by using devices called curling boxes is carried out according to a known method. This method consists in directing the wires to be curled between two drive rollers which force said wires into a compaction channel. This channel of compaction is generally provided at its end opposite to the rollers a check valve to ensure the compaction of the wires to the inside of the curling box. The valve or similar retaining device has intended to increase the friction of fibers or threads on the walls of the compacting box to the point where the material to be curled will lose, at its output from the drive rollers, its presentation in longitudinal form to take a wavy presentation generated by the downstream friction of wires on the walls of the curling box.

L'ondulation obtenue est appelée frisure primaire et cette frisure peut être très régulière, mais si la chambre de compactage a un volume ou une géométrie inadaptée, la frisure primaire va tendre à se transformer en une frisure secondaire qui aura pour effet de compacter le matériau différemment et, par conséquent, tendra à faire disparaítre la frisure primaire régulière.The crimp obtained is called primary crimp and this crimp can be very regular, but if the compaction chamber has a volume or unsuitable geometry, the primary crimp will tend to turn into a secondary crimp which will have the effect of compacting the material differently and, therefore, will tend to disappear the crimp regular primary.

Généralement, les boítes à friser mettent en oeuvre un fluide thermique, à savoir de la vapeur, pour la réalisation de tout ou partie de la frisure. Cette vapeur est alors injectée par des orifices situés sur les parois de la chambre de compactage de sorte que le matériau à friser a tendance à être expulsé hors de la boíte à friser. Il en résulte la nécessité d'appliquer une force de freinage d'autant plus importante en sortie de la boíte à friser, de sorte que le matériau tend d'autant plus à prendre davantage de frisure secondaire et, en corollaire, à perdre encore plus de frisure primaire.Generally, curling boxes use a fluid thermal, namely steam, for the production of all or part of the crimp. This vapor is then injected through orifices located on the walls from the compaction chamber so that the material to be crimped tends to be kicked out of the curling box. This results in the need to apply an even greater braking force at the outlet of the curling box, so that the material tends all the more to take more crimp secondary and, as a corollary, to lose even more primary crimp.

Des machines à friser mettant en oeuvre un tel procédé sont notamment connues par FR-A-2 652 359 et US-A-5 647 109. Dans ces machines, il est impossible de créer et de conserver la frisure régulière des fibres ou des fils, du fait que la géométrie de la boíte de compactage et/ou le système de traitement thermique entraínent la destruction de celle-ci.Curling machines implementing such a method are notably known from FR-A-2 652 359 and US-A-5 647 109. In these machines, it is impossible to create and maintain the regular crimp of fibers or yarns, because the geometry of the compacting box and / or the heat treatment system cause its destruction.

La présente invention a pour but de pallier ces inconvénients en proposant un procédé et un dispositif de frisage de fils permettant l'obtention d'une frisure parfaitement régulière, sans formation de frisure secondaire ou parasite.The object of the present invention is to overcome these drawbacks by proposing a method and a device for crimping wires allowing obtaining a perfectly regular crimp, without crimp formation secondary or parasitic.

A cet effet, le procédé de frisage de fils est caractérisé en ce qu'il consiste essentiellement à faire passer les fils dans une première zone de compactage d'une boíte à friser, pour l'obtention d'une frisure régulière, puis à réaliser, dans une deuxième zone présentant un espace libre délimité sur au moins un côté du ruban de fils, un préfixage de la frisure régulière obtenue, ainsi qu'un guidage de cette dernière, jusqu'à la sortie de la boíte à friser, par l'intermédiaire du fluide de préfixage.To this end, the wire crimping process is characterized in that that it consists essentially in passing the wires through a first zone compacting a crimping box, to obtain a regular crimp, then to realize, in a second area having a free space delimited on at least one side thread ribbon, a prefix for regular crimping obtained, as well as a guide of the latter, up to the exit of the box curl, using the prefixing fluid.

L'invention a également pour objet un dispositif pour la mise en oeuvre de ce procédé, se présentant sous forme d'une boíte à friser pourvue d'une enceinte de compactage comportant des rouleaux d'entraínement coopérant avec des racles et une enceinte de préfixage et de guidage des fils frisés, caractérisé en ce que la section de l'enceinte de compactage est réglable et en ce que l'enceinte de préfixage et de guidage présente une section supérieure à celle du ruban de fils frisés obtenus, le ou les espaces supplémentaires délimités autour dudit ruban étant en relation avec les moyens de délivrance du fluide de fixage.The invention also relates to a device for setting work of this process, in the form of a curling box provided a compaction enclosure comprising drive rollers cooperating with doctor blades and a pre-fixing and wire guiding enclosure crimped, characterized in that the cross-section of the compaction enclosure is adjustable and in that the prefixing and guiding enclosure has a section larger than that of the ribbon of crimped threads obtained, the space or spaces additional delimited around said ribbon being in relation to means for delivering the fixing fluid.

L'invention sera mieux comprise grâce à la description ci-après, qui se rapporte à un mode de réalisation préféré, donné à titre d'exemple non limitatif et expliqué avec référence aux dessins schématiques annexés, dans lesquels :

  • la figure 1 est une vue partielle représentant un dispositif conforme à l'invention ;
  • la figure 2 est une vue partielle en perspective à plus grande échelle, représentant la sortie de l'enceinte de compactage et l'enceinte de préfixage et de guidage du ruban obtenu, cette dernière enceinte étant représentée partiellement ;
  • la figure 3 est une vue partielle en perspective, à plus grande échelle, et en coupe de l'enceinte de compactage reliée à l'entrée de l'enceinte de préfixage et de guidage ;
  • la figure 4 est une vue schématique de dessus représentant le réglage de la section de l'enceinte de compactage ;
  • la figure 5 est une vue partielle en perspective représentant le moyen de réglage initial de la frisure, et
  • les figures 6 à 13 sont des vues en coupe représentant différentes géométries de la chambre de préfixage et de guidage.
    • The invention will be better understood thanks to the description below, which relates to a preferred embodiment, given by way of nonlimiting example and explained with reference to the appended schematic drawings, in which:
  • Figure 1 is a partial view showing a device according to the invention;
  • Figure 2 is a partial perspective view on a larger scale, showing the outlet of the compacting enclosure and the enclosure for prefixing and guiding the ribbon obtained, the latter enclosure being shown partially;
  • Figure 3 is a partial perspective view, on a larger scale, and in section of the compacting enclosure connected to the inlet of the prefixing and guiding enclosure;
  • Figure 4 is a schematic top view showing the adjustment of the section of the compaction chamber;
  • FIG. 5 is a partial perspective view showing the initial crimp adjustment means, and
  • Figures 6 to 13 are sectional views showing different geometries of the prefixing and guiding chamber.

    • La figure 1 des dessins annexés représente, à titre d'exemple, un dispositif pour la réalisation d'un frisage de fibres ou de fils textiles se présentant sous forme d'une boíte à friser pourvue d'une enceinte de compactage 1 comportant des rouleaux 2 d'entraínement coopérant avec des racles 3 (figures 3et 4) et une enceinte 5 de préfixage et de guidage des fils frisés 6.Figure 1 of the accompanying drawings shows, by way of example, a device for the crimping of fibers or textile threads in the form of a curling box provided with an enclosure of compaction 1 comprising rollers 2 for driving cooperating with doctor blades 3 (Figures 3 and 4) and an enclosure 5 for fixing and guiding the wires curly 6.

    Conformément à l'invention, ce dispositif met en oeuvre un procédé qui consiste essentiellement à faire passer les fils 4 dans une première zone de compactage d'une boíte à friser, pour l'obtention d'une frisure régulière 6, puis à réaliser, dans une deuxième zone 5, présentant un espace libre 5' délimité sur au moins un côté du ruban de fils, un préfixage de la frisure régulière 6 obtenue, ainsi qu'un guidage de cette dernière, jusqu'à la sortie de la boíte à friser, par l'intermédiaire du fluide de préfixage.According to the invention, this device implements a process which essentially involves passing the wires 4 through a first compaction zone of a curling can, to obtain a regular crimp 6, then to perform, in a second zone 5, having a 5 'free space delimited on at least one side of the ribbon of wires, a prefixing regular crimp 6 obtained, as well as guiding of the latter, up to the outlet of the curling can, through the fluid prefixing.

    Selon une caractéristique de l'invention, le réglage et la formation initiale de la frisure sont réalisés par retenue de l'extrémité des fibres ou fils engagés dans la boíte à friser, en aval de l'enceinte de compactage 1. Ainsi, les fibres ou fils, qui passent entre les rouleaux d'entraínement 2 et qui sont poussés entre les racles 3, sont d'abord retenus dans l'enceinte de préfixage et de guidage 5 afin de réaliser une frisure initiale correspondant aux caractéristiques de frisures recherchées. La durée de retenue de fibres ou fils pour le début du frisage d'un ruban est déterminée en fonction des caractéristiques mécaniques propres des fibres ou fils et de celles de la frisure recherchée et sont avantageusement répertoriés sur un tableau ou une abaque permettant un réglage rapide de la boíte à friser pour chaque type de fibres ou de fils textiles.According to a characteristic of the invention, the adjustment and the initial crimping are carried out by retaining the end of the fibers or threads engaged in the curling box, downstream of the enclosure compaction 1. Thus, the fibers or threads, which pass between the rollers 2 and which are pushed between the doctor blades 3, are first retained in the prefixing and guiding enclosure 5 in order to achieve a crimp initial corresponding to the desired crimp characteristics. The duration retaining fibers or yarns for the start of the crimping of a ribbon is determined according to the mechanical properties of the fibers or son and those of the desired crimp and are advantageously listed on a table or abacus allowing rapid adjustment of the curling box for each type of textile fiber or yarn.

    Conformément à une autre caractéristique de l'invention, le préfixage de la frisure régulière 6 obtenue, ainsi que le guidage de cette dernière, jusqu'à la sortie de la boíte à friser, sont réalisés par l'intermédiaire du fluide de préfixage qui agit sur au moins une partie de la section du ruban frisé obtenu, dans un espace libre de la chambre de préfixage et de guidage.In accordance with another characteristic of the invention, the prefixing of the regular crimp 6 obtained, as well as the guiding of this last, up to the exit of the curling box, are made by means of the prefixing fluid which acts on at least part of the section of the crimped ribbon obtained, in a free space of the prefixing and guiding.

    Pour la mise en oeuvre de ce procédé, le dispositif, qui se présente sous forme d'une boíte à friser est caractérisé en ce que la section de l'enceinte 1 de compactage est réglable et en ce que l'enceinte 5 de préfixage et de guidage présente une section supérieure à celle du ruban de fils frisés 6 obtenus, le ou les espaces supplémentaires délimités autour dudit ruban 6 étant en relation avec les moyens de délivrance du fluide de fixage.For the implementation of this process, the device, which present in the form of a curling box is characterized in that the section of the compaction enclosure 1 is adjustable and in that the enclosure 5 of prefixing and guiding has a section larger than that of the ribbon crimped yarn 6 obtained, the additional space or spaces delimited around of said ribbon 6 being in relation to the means for delivering the fluid fixing.

    L'enceinte 1 de compactage, qui est constituée par des rouleaux d'entraínement 2 et par des racles 3, est réglable dans sa section par prévision de moyens 7 et 8 permettant, d'une part, un rapprochement mutuel des racles 3 et, d'autre part, un déplacement de la section d'entrée des racles 3 en direction ou à écartement des rouleaux d'entraínement 2. Le moyen de réglage 7 permettant le rapprochement mutuel des racles 3 est représenté à la figure 4 des dessins annexés sous forme d'un élément fileté à pas inverse, mais peut très bien être sous forme d'une paire de vérins commandés en synchronisme ou d'une tringlerie articulée rapprochant et écartant les racles 3.The compaction enclosure 1, which is constituted by rollers drive 2 and by doctor blades 3, is adjustable in its section by provision of means 7 and 8 allowing, on the one hand, mutual rapprochement doctor blades 3 and, on the other hand, a displacement of the inlet section of the doctor blades 3 towards or away from the drive rollers 2. The means of adjustment 7 allowing the mutual approximation of the doctor blades 3 is shown at FIG. 4 of the appended drawings in the form of a threaded element with reverse pitch, but may very well be in the form of a pair of cylinders ordered in synchronism or an articulated linkage bringing the scrapers apart and spreading them apart 3.

    Le moyen 8, qui est destiné à réaliser le déplacement de l'entrée des racles en direction des rouleaux d'entraínement 2 ou en sens opposé de ces rouleaux d'entraínement 2, est simplement représenté à la figure 4 par un trait d'axe et peut également être, soit sous forme d'un entraínement à vis et écrou agissant sur un moyen de guidage et de support commun au racle 3, soit d'entraínements individuels et synchronisés des racles.The means 8, which is intended to carry out the displacement of the entry doctor blades in the direction of the drive rollers 2 or in the opposite direction of these drive rollers 2, is simply shown in Figure 4 by a center line and can also be either in the form of a screw drive and nut acting on a guide and support means common to the doctor blade 3, either individual and synchronized doctor blades.

    De préférence, le réglage en écartement des racles 3 et le réglage de ces dernières par rapport aux rouleaux d'entraínement 2 sont effectués par un élément de commande centralisé synchronisant les deux mouvements de réglage. En effet, il est nécessaire d'effectuer simultanément ou quasi-simultanément le réglage de l'ouverture des racles 3 et leur positionnement par rapport aux rouleaux d'entraínement 2, afin de pouvoir disposer rapidement d'un réglage optimum de ces dernières.Preferably, the spacing adjustment of the doctor blades 3 and the adjustment of the latter relative to the drive rollers 2 are performed by a centralized control element synchronizing the two adjustment movements. Indeed, it is necessary to perform simultaneously or almost simultaneously adjusting the opening of the doctor blades 3 and their positioning relative to the drive rollers 2, in order to be able to quickly have an optimum setting of these.

    L'enceinte 1 de compactage débouche sur l'enceinte 5 de préfixage et de guidage de la frisure régulière 6 obtenue, qui présente une section transversale intérieure supérieure à celle de ladite frisure 6 et qui est pourvue sur ses faces internes de moyens de délivrance du fluide de fixage, sous forme de buses ou analogues, non représentées. La section interne de l'enceinte 5 est agencée de manière à délimiter sur au moins un côté du ruban de fils frisés 6 obtenus un espace libre 5', de géométrie quelconque. Cet espace 5' permet une expansion du fluide de préfixage sans que ce dernier exerce une forte pression sur le ruban de fils frisés 6, cette pression étant, toutefois, suffisante pour guider de manière dynamique ledit ruban dans l'enceinte 5, c'est-à-dire pour favoriser sa progression dans ladite enceinte vers la sortie de cette dernière sur un dispositif 9 de convoyage ou de réception (figure 1).The compaction enclosure 1 leads to the enclosure 5 of prefixing and guiding the regular crimp 6 obtained, which has a inner cross section greater than that of said crimp 6 and which is provided on its internal faces with means for delivering the fixing fluid, in the form of nozzles or the like, not shown. The internal section of the enclosure 5 is arranged so as to delimit on at at least one side of the ribbon of crimped threads 6 obtained a free space 5 ′, of any geometry. This space 5 'allows an expansion of the fluid of prefixing without the latter exerting strong pressure on the ribbon of wires crimps 6, this pressure being, however, sufficient to guide so dynamic said ribbon in enclosure 5, that is to say to promote its progression in said enclosure towards the exit of the latter on a conveying or receiving device 9 (FIG. 1).

    Comme le montrent les figures 6 à 13 des dessins annexés, la section interne de l'enceinte 5 peut être du type à polygone régulier ou irrégulier et délimiter un espace 5' seulement d'un côté du ruban de fil frisé 6 ou sur deux côtés de ce ruban. De préférence, la section interne de l'enceinte 5 présentera une conformation telle que des espaces 5' de hauteur légèrement inférieure à la hauteur du ruban de fils frisés 6 sont délimités de part et d'autre dudit ruban 6 pour s'appuyer par leurs bords contre les coins de ce dernier (figures 8 à 11).As shown in Figures 6 to 13 of the accompanying drawings, the internal section of the enclosure 5 can be of the regular polygon type or irregular and delimit a space 5 'only on one side of the ribbon of crimped wire 6 or on two sides of this ribbon. Preferably, the internal section of the enclosure 5 will have a conformation such that spaces 5 'in height slightly less than the height of the ribbon of crimped threads 6 are delimited by on either side of said ribbon 6 to press their edges against the corners of the latter (Figures 8 to 11).

    Selon une autre caractéristique de l'invention, non représentée aux dessins annexés, la section du ruban de fils frisés peut également être réglable en hauteur par prévision, au niveau des racles 3, de moyens de guidage déplaçables à coulissement entre lesdits racles, dans le sens de leur axe vertical. Dans ce qui précède, il est fait référence à un axe vertical des racles, qui correspondant, en fait, à la direction des axes des rouleaux d'entraínement 2. Bien entendu, cette notion de verticalité des racles est uniquement destinée à expliquer le positionnement et le déplacement des moyens de réglage de hauteur du ruban de fils frisés 6 par rapport à la largeur de ce ruban, étant entendu que la boíte à friser peut aussi bien présenter une orientation des axes des rouleaux d'entraínement verticale, qu'une orientation horizontale.According to another characteristic of the invention, not shown in the accompanying drawings, the section of the ribbon of crimped yarn can also be adjustable in height by providing, at the doctor blades 3, means of sliding guide movable between said doctor blades, in the direction of their vertical axis. In the foregoing, reference is made to a vertical axis of doctor blades, which in fact correspond to the direction of the axes of the rollers 2. Of course, this notion of verticality of the doctor blades is only intended to explain the positioning and movement of means for adjusting the height of the ribbon of crimped threads 6 relative to the width of this ribbon, it being understood that the curling box can as well present an orientation of the axes of the vertical drive rollers, than a horizontal orientation.

    Selon une autre caractéristique de l'invention, le dispositif est pourvu, en outre, à l'extrémité de l'enceinte de préfixage et de guidage 5 opposée à celle reliée à l'enceinte de compactage 1, d'un moyen 10 de retenue des fibres ou fils, au début d'une opération de frisage. Ce moyen 10 peut avantageusement être constitué sous forme d'un clapet (figure 5) monté devant la sortie de ladite enceinte 5 et pouvant être actionnée par l'intermédiaire d'un dispositif de motorisation non représentée, dont le déclenchement à l'ouverture et à la fermeture est préférentiellement réalisé par l'intermédiaire d'un automate programmable et/ou par une commande à impulsion manuelle. Un tel dispositif de motorisation peut notamment être sous forme d'un vérin rotatif ou d'un vérin agissant sur l'axe du clapet par l'intermédiaire d'un levier ou encore sous forme d'un moteur électrique pas à pas. L'automate programmable pouvant commander un tel clapet est également d'un type connu pour l'homme du métier et peut, par exemple, prendre en considération des données numériques préétablies par un réglage d'apprentissage. Ainsi, il suffit, dans un premier temps, de réaliser pour chaque type de produit utilisé un essai de frisage préalable, afin de déterminer les caractéristiques de réglage permettant l'obtention des valeurs de frisage désirées en fonction du titre du produit à traiter et de la vitesse de défilement des fils et de reporter ces données sur un tableau ou une abaque, pour, ensuite, simplement programmer la machine en fonction des données de produit et de matériau final à obtenir. Le réglage préalable peut, par exemple, être réalisé par actionnement du clapet 10 au moyen d'une commande manuelle à impulsion.According to another characteristic of the invention, the device is further provided at the end of the prefixing and guiding enclosure 5 opposite to that connected to the compacting enclosure 1, a means 10 for retaining fibers or yarns at the start of a crimping operation. This means 10 can advantageously be constituted in the form of a valve (FIG. 5) mounted in front of the outlet of said enclosure 5 and which can be actuated by via a motorization device not shown, the opening and closing is preferably carried out via a programmable controller and / or by a command to manual impulse. Such a motorization device can in particular be in the form of a rotary actuator or of an actuator acting on the axis of the valve by through a lever or even in the form of an electric motor not step by step. The programmable controller capable of controlling such a valve is also of a type known to those skilled in the art and can, for example, take into account pre-established digital data by setting learning. So, it suffices, firstly, to realize for each type of product used a prior crimping test, in order to determine the adjustment characteristics enabling values to be obtained desired crimping depending on the title of the product to be treated and the speed of scrolling the wires and plotting this data on a table or chart, to then simply program the machine according to the data of product and final material to be obtained. The pre-setting can, for example example, be made by actuating the valve 10 by means of a manual impulse control.

    En début d'opération de frisage de fils ou de fibres, la machine démarre automatiquement avec le clapet 10 en position de fermeture pendant une durée prédéterminée correspondant à la réalisation d'une frisure primaire initiale correspondant à la frisure à obtenir, puis ledit clapet 10 est automatiquement ouvert et l'opération de frisage peut se poursuivre normalement.At the start of a wire or fiber crimping operation, the machine starts automatically with valve 10 in the closed position for a predetermined period corresponding to the production of a crimp initial primary corresponding to the crimp to be obtained, then said valve 10 is automatically opened and the crimping operation can continue normally.

    En outre, afin d'éviter la formation de condensation lors du démarrage de la machine, les parois supérieure et inférieure de l'enceinte de préfixage et de guidage 5 peuvent avantageusement être équipées d'un moyen intégré de chauffage, électrique ou à circulation de fluide chaud.In addition, in order to avoid the formation of condensation during machine start-up, the upper and lower walls of the containment prefixing and guiding 5 can advantageously be equipped with a integrated heating, electric or hot fluid circulation means.

    Afin de permettre un contrôle de la qualité du ruban de fils frisés 6, il peut être prévu, en outre, au moins une portion de paroi de l'enceinte 5 de préfixage et de guidage en matériau transparent. Ainsi, il est possible de réaliser une surveillance visuelle du ruban 6 et de contrôler la constance des caractéristiques du produit.To allow quality control of the ribbon of threads curly 6, it can be provided, in addition, at least a portion of the wall of the enclosure 5 for prefixing and guiding in transparent material. So it is possible to carry out a visual monitoring of the tape 6 and to control the consistency of product characteristics.

    Selon une caractéristique de l'invention, non représentée aux dessins annexés, la paroi transparente peut être pourvue, en outre, d'un moyen optique de surveillance du produit obtenu coopérant avec un dispositif électronique de comparaison. Une telle installation de surveillance opto-électronique, qui met en oeuvre des moyens connus de l'homme du métier n'est pas décrite plus en détail. Cette installation permet de procéder à des vérifications par comparaison avec des données emmagasinées dans une mémoire électronique et, en liaison avec un automate programmable ou avec un système informatique de contrôle et de commande centrale d'agir sur les paramètres de fonctionnement de la machine. According to a characteristic of the invention, not shown in annexed drawings, the transparent wall may be provided, in addition, with a optical means for monitoring the product obtained cooperating with a electronic comparison device. Such an installation of opto-electronic surveillance, which uses known means of the skilled person is not described in more detail. This installation allows to carry out checks by comparison with data stored in an electronic memory and, in conjunction with a programmable controller or with a computerized control and central control to act on the operating parameters of the machine.

    Grâce à l'invention, il est possible de réaliser un frisage de fils dans une boíte à friser avec un contrôle parfait de la régularité de la frisure, cette dernière étant exposée pendant une partie de son passage dans la boíte à friser à un fluide de préfixage réalisant simultanément un guidage dynamique du ruban de fils frisés jusqu'à la sortie de la boíte à friser, ce en mettant en oeuvre au moins un espace uniquement occupé par le fluide de préfixage.Thanks to the invention, it is possible to crimp wires in a curling box with perfect control of the regularity of the crimp, the latter being exposed during part of its passage in the box to curl with a prefixing fluid simultaneously providing guidance dynamic of the ribbon of crimped wires up to the exit of the crimping box, this in using at least one space occupied only by the prefixing.

    En outre, la géométrie de l'enceinte 5 de préfixage et de guidage permet de conserver de manière parfaite la frisure primaire générée dans l'enceinte de compactage 1.In addition, the geometry of the enclosure 5 for prefixing and guidance makes it possible to perfectly preserve the primary crimp generated in the compaction chamber 1.

    Toutefois, l'invention permet également, par mise en oeuvre spécialement commandée pendant le frisage du clapet 10 formant le moyen de retenue, de réaliser une frisure irrégulière, à savoir primaire et secondaire, comme cela est possible avec les machines à friser connues actuellement.However, the invention also allows, by implementation specially ordered during the crimping of the valve 10 forming the means retainer, to achieve an irregular crimp, namely primary and secondary, as is possible with known curling machines currently.

    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 ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention.Of course, the invention is not limited to the mode of embodiment described and shown in the accompanying drawings. Modifications remain possible, especially from the point of view of the constitution of the various elements or by substitution of technical equivalents, without leaving for as much of the scope of protection of the invention.

    Claims (18)

    1. Method for crimping textile fibres or yarns in a crimping box that is provided with a compaction chamber (1) comprising driving rollers (2), which cooperate with scrapers (3), and a chamber (5) for pre-setting and guiding the crimped yarns (6), characterised in that it substantially consists in conveying the yams (4) into a first compaction zone of a crimping box, in order to obtain uniform crimping (6), and then, in a second zone (5) having a free space (5') that is delimited on at least one side of the yarn strand, in pre-setting the obtained uniform crimping (6) and guiding said crimping to the outlet of the crimping box, by means of the pre-setting fluid.
    2. Method according to claim 1, characterised in that the crimping is adjusted and initially formed by retaining the end of the fibres or yams inserted in the crimping box, downstream of the compaction chamber (1).
    3. Method according to claim 1, characterised in that the obtained uniform crimping (6) is pre-set and guided to the outlet of the crimping box by means of the pre-setting fluid, which acts on at least a part of the section of the obtained crimped strand, in a free space in the pre-setting and guiding chamber.
    4. Device for carrying out the method according to claim 1, in the form of a crimping box that is provided with a compaction chamber (1) comprising driving rollers (2), which cooperate with scrapers (3), and a chamber (5) for pre-setting and guiding the crimped yarns (6), characterised in that the section of the compaction chamber (1) is adjustable, and in that the pre-setting and guiding chamber (5) has a larger section than the strand of obtained crimped yarns (6), the supplementary space or spaces delimited around said strip (6) being related to the means for delivering the setting fluid.
    5. Device according to claim 4, characterised in that the section of the compaction chamber (1), which comprises driving rollers (2) and scrapers (3), may be adjusted by providing means (7 and 8) which, on the one hand, allow the scrapers (3) to be brought close together and, one the other hand, allow the inlet section of the scrapers (3) to be displaced in the direction of, or at a distance from, the driving rollers (2).
    6. Device according to claim 5, characterised in that the adjusting means (7), which allows the scrapers (3) to be brought closer together, is in the form of an element that is threaded with reverse pitch, or in the form of a pair of cylinders controlled in synchronisation, or of an articulated linkage, drawing the scrapers (3) together and apart.
    7. Device according to claim 5, characterised in that the means (8), which is intended to displace the inlet of the scrapers in the direction of the driving rollers (2) or in the opposite direction to these driving rollers (2), is in the form either of a screw-and-nut drive acting on a guiding and support means that is common to the scraper (3), or of individual synchronised drives of the scrapers.
    8. Device according to any one of claims 5 to 7, characterised in that the spacing of the scrapers (3) and the adjustment thereof relative to the driving rollers (2) are brought about by a centralised control element that synchronises the two adjustment movements.
    9. Device according to claim 4, characterised in that the compaction chamber (1) opens into the chamber (5) for pre-setting and guiding the obtained uniform crimping (6), which has a larger internal cross-section than said crimping (6) and is provided on its internal faces with means for delivering the setting fluid, in the form of nozzles or the like.
    10. Device according to claim 9, characterised in that the internal section of the chamber (5) is configured so as to delimit, on at least one side of the strand of obtained crimped yarns (6), a free space (5'), of any shape.
    11. Device according to claim 9, characterised in that the internal section of the chamber (5) is of the regular or irregular polygon type, and delimits a space (5') only on one side of the crimped yarn strand (6) or on two sides of this strand.
    12. Device according to claim 11, characterised in that the internal section of the chamber (5) is of a configuration such that spaces (5') that are slightly lower than the strand of crimped yarns (6) are delimited on either side of said strand (6), so that their edges rest against the comers of said strand.
    13. Device according to claim 4, characterised in that the height of the section of the strand of crimped yams may be adjusted by providing, in the region of the scrapers (3), guiding means that may be displaced in a sliding manner between said scrapers, in the direction of the vertical axis of said means.
    14. Device according to claim 4, characterised in that it is also provided, at the end of the pre-setting and guiding chamber (5) that is remote from that connected to the compaction chamber (1), with a means (10) for retaining the fibres or yarns at the start of a crimping process.
    15. Device according to claim 14, characterised in that the means (10) is in the form of a valve that is mounted in front of the outlet of said chamber (5) and is capable of being actuated by means of a motorisation device, the opening and closing mechanism of which is preferably triggered by means of a programmable controller and/or by a manual pulse command.
    16. Device according to claim 4, characterised in that the upper and lower walls of the pre-setting and guiding chamber (5) are equipped with an electric or hot fluid-circulation, integrated heating means.
    17. Device according to claim 4, characterised in that at least one wall portion of the pre-setting and guiding chamber (5), which is made of a transparent material, is also provided.
    18. Device according to claim 17, characterised in that the transparent wall is also provided with an optical means for monitoring the obtained product, which means cooperates with an electronic comparison device.
    EP02360336A 2001-12-21 2002-12-06 Method and apparatus for crimping yarns Expired - Lifetime EP1323853B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR0116757A FR2833974B1 (en) 2001-12-21 2001-12-21 METHOD AND DEVICE FOR CRIMPING YARN
    FR0116757 2001-12-21

    Publications (2)

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    EP1323853A1 EP1323853A1 (en) 2003-07-02
    EP1323853B1 true EP1323853B1 (en) 2004-12-01

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    EP02360336A Expired - Lifetime EP1323853B1 (en) 2001-12-21 2002-12-06 Method and apparatus for crimping yarns

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    CN (1) CN1432676A (en)
    DE (1) DE60202122T2 (en)
    FR (1) FR2833974B1 (en)

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    US7534379B2 (en) * 2004-06-25 2009-05-19 Celanese Acetate Llc Process of making cellulose acetate tow
    US7425289B2 (en) * 2004-06-25 2008-09-16 Celanese Acetate Llc Process of making cellulose acetate tow
    JP2006120530A (en) * 2004-10-22 2006-05-11 Tyco Electronics Amp Kk Crimp device
    CN101838871B (en) * 2009-12-28 2012-06-13 宁波荣溢化纤科技有限公司 Crimping machine cooling device, crimping machine and silk thread crimping method
    FR2963028B1 (en) 2010-07-26 2013-05-03 Superba Sa METHOD AND DEVICE FOR TEXTURING WIRE FOR CARPET OR CARPET, BEYOND A THERMAL TREATMENT UNIT
    CN116497495B (en) * 2023-06-30 2023-09-22 江苏恒力化纤股份有限公司 Segment color raised yarn and preparation method and device thereof

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    NL252137A (en) * 1964-01-25
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    DE1816028C3 (en) * 1968-12-20 1982-06-09 Vepa AG, 4125 Riehen, Basel Device for crimping synthetic thread sheets
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    DE60202122D1 (en) 2005-01-05
    DE60202122T2 (en) 2005-12-01
    EP1323853A1 (en) 2003-07-02
    CN1432676A (en) 2003-07-30
    FR2833974B1 (en) 2004-02-13
    FR2833974A1 (en) 2003-06-27

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