EP0568467B1 - Method for the processing of chemical yarns notably during a texturing process and the textile machine for carrying out this method - Google Patents
Method for the processing of chemical yarns notably during a texturing process and the textile machine for carrying out this method Download PDFInfo
- Publication number
- EP0568467B1 EP0568467B1 EP93420129A EP93420129A EP0568467B1 EP 0568467 B1 EP0568467 B1 EP 0568467B1 EP 93420129 A EP93420129 A EP 93420129A EP 93420129 A EP93420129 A EP 93420129A EP 0568467 B1 EP0568467 B1 EP 0568467B1
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- EP
- European Patent Office
- Prior art keywords
- yarn
- wire
- air
- tube
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 25
- 239000004753 textile Substances 0.000 title claims description 4
- 239000000126 substance Substances 0.000 title 1
- 238000001816 cooling Methods 0.000 claims description 35
- 238000009434 installation Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000006677 Appel reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 241001080024 Telles Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002470 thermal conductor Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- 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
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
- D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
- D02G1/0266—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting false-twisting machines
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/003—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one stationary surface, e.g. a plate
Definitions
- the present invention relates to a method for treating a moving wire, and more particularly a method of cooling the wire after passing through an oven during a texturing operation, in particular by false twisting according to the preamble of claim 1.
- the present invention applies to all types of single or multifilament yarns, even a yarn of fibers.
- the method according to the invention making it possible to cool a wire in motion at the outlet of an oven before passing through a processing member such as a false twist spindle, consists in passing said wire through the inside a tube traversed by a stream of fresh air or other gaseous product, said stream of air being directed in a direction opposite to the direction of passage of the wire, and it is characterized in that during this cooling phase , the wire is kept in contact with a bearing or guide surface arranged coaxially inside the tube through which the air stream which flows along said guide surface passes.
- the outer tube is of cylindrical section and the coaxial guide surface is itself constituted by a cylindrical element, the air stream flowing along said surface in the space between said tube.
- the material allowing the guide surface to be produced any material having mechanical characteristics such that it resists abrasion will be used, without altering the properties of the wire, such as for example ceramic.
- the passage of the wire against the guide surface is carried out so that it forms a helix around the latter; advantageously, the wire surrounds said guide surface over 180 ° between its entry and its exit from the cooling zone.
- the guidance of the wire is advantageously obtained by making the connection between the guide surface and the outer tube by means of "pins" arranged at the ends of the assembly and angularly offset one with respect to the other.
- the outer tube also has a longitudinal slot facilitating the introduction of the wire; such an embodiment makes it possible to automatically obtain a positioning of the propeller against the surface disposed inside the outer tube.
- the invention also relates to a textile installation comprising means making it possible to cool a yarn before leaving an oven using such a method.
- cooling means consist of an assembly comprising a tube traversed by a stream of fresh air or other gaseous product, directed in the opposite direction to the direction of passage of the wire and inside which is disposed , coaxially, a bearing surface for said wire.
- said guide or support surface is in the form of a rectilinear block, of cylindrical cross section, and outside of which comes to bear the wire during its displacement.
- the path of the wire against the guide surface is produced by forming a helix between the inlet and the outlet of the cooling assembly; in this embodiment, the guiding of the helical wire is obtained by providing, at least one inlet and one outlet for the cooling assembly of the "pins" connecting the internal cylindrical surface to the external surface, and which are angularly offset from each other, such elements making it possible not only to ensure the automatic positioning of the wire inside the cooling assembly, but also the connection between the outer casing and the core ( guide surface) internal.
- Such a cooling assembly is aligned with the furnace outlet and the false twist spindle, and can be arranged in any position, either horizontally or slightly inclined downward in the direction of movement of the wire, either vertically or making any angle to the vertical.
- a second fixing oven can be provided between the last call (8) and the winding system (3).
- the cooling zone produced in accordance with the invention consists essentially of an assembly (6) arranged in the extension and near the outlet of the oven (5), and preferably aligned with the false twist pin (7) to obtain a substantially straight path of the wire.
- This cooling assembly is constituted by a tube (10), preferably of cylindrical section, and which comprises a slot allowing the positioning of the wire (2) during the launching operation. Inside this tube (10) is arranged, coaxially, a cylindrical guide surface (9) based on any suitable material, such as in particular ceramic, or stainless steel having received a surface treatment such as for example a plasma treatment.
- such an assembly (6) has a length of 300 millimeters, a diameter for the outer tube (10) of 25 millimeters, and a diameter for the cylindrical guide surface (9) of 15 millimeters.
- Additional guide means (11,12) for the wire (2) are preferably provided upstream and downstream of the cooling assembly (6) and allow the wire (2) to follow a path in the form of propeller against the surface (9).
- a path in the form of a helix is obtained by using as guide means (11,12) two "pins" disposed at each end of the assembly (6), and which are offset angularly one in relation to the other.
- a slot is provided to facilitate threading of the wire.
- the helical wire is automatically positioned around the surface (9), the pins (11,12) playing their role of connecting and centering elements. of the cylindrical guide surface (9) relative to the outer tube (10).
- the outlet of the assembly (6) there opens a conduit (13) connected to a source of compressed air, making it possible to breathe into the space between the core (9) and the outer casing (10), a current of air flowing in a direction opposite to that of the advance of the wire (2) and producing a venturi effect inside said assembly.
- the air pressure blown inside the cooling assembly is generally low and of the order of one (1) bar, the flow rate being significant taking into account the fact that there is an additional call. of air from the outlet towards the inlet of the envelope (10).
- the air flow can be regulated by any suitable means and depends on the nature of the wire, its temperature and its speed.
- the air supply can be carried out either individually for each position of the machine, or by means of a common supply for all positions.
- the air cools the thread in the opposite direction and therefore breaks the hot air sheath which surrounds it, the cooling being moreover accentuated by contact with the guide surface.
- wire which, in summary, provides cooling combining both an extraction of calories by convection and conduction.
- the guide surface (9) against which the wire rests during its passage inside the cooling assembly not only promotes its cooling, but also eliminates any risk of disturbances or faults created by the air flowing inside the cooling assembly.
- the external split tube not only makes it possible to channel the air, but causes a venturi effect resulting in a large natural flow, making it possible to remove the sheath of hot air which accompanies the wire.
- the treatment organs are arranged horizontally, but it could be envisaged to arrange them vertically or by using any angle with respect to the vertical.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
La présente invention a trait à un procédé pour le traitement d'un fil en mouvement, et plus particulièrement un procédé de refroidissement du fil après passage dans un four lors d'une opération de texturation, notamment par fausse torsion selon le préambule de la revendication 1.The present invention relates to a method for treating a moving wire, and more particularly a method of cooling the wire after passing through an oven during a texturing operation, in particular by false twisting according to the preamble of
Un tel procédé est connu du GB-A-2 019 456.Such a method is known from GB-A-2 019 456.
Elle concerne également une installation pour la mise en oeuvre de ce procédé.It also relates to an installation for the implementation of this process.
Dans la suite de la description, l'invention sera décrite appliquée à un procédé de texturation dit "par fausse torsion", procédé selon lequel on soumet le fil en mouvement à une torsion provisoire et à un traitement thermique à l'état tordu, le fil étant éventuellement soumis à un traitement de fixation .In the following description, the invention will be described applied to a texturing process known as "by false twist", a process according to which the moving wire is subjected to a provisional twist and to a heat treatment in the twisted state, the wire possibly being subjected to a fixing treatment.
Il est évident que cela ne limite pas la portée de l'invention et qu'il peut également être appliqué à tous les procédés dans lesquels on traite thermiquement un fil en mouvement, le fil devant être ensuite refroidi rapidement avant passage dans un organe de traitement situé en aval de l'organe de traitement thermique.It is obvious that this does not limit the scope of the invention and that it can also be applied to all the processes in which a moving wire is heat treated, the wire then having to be cooled rapidly before passing through a treatment member. located downstream of the heat treatment unit.
Par ailleurs, la présente invention s'applique à tous types de fils mono ou multifilamentaires, voire même un filé de fibres.Furthermore, the present invention applies to all types of single or multifilament yarns, even a yarn of fibers.
La nécessité d'effectuer un refroidissement du fil dans une machine de fausse torsion entre la sortie du four et la broche, a été mise pratiquement en évidence dès le début du développement industriel de cette technologie, comme cela ressort notamment du brevet français no. 1 076 599.The need to cool the wire in a false-twist machine between the outlet of the oven and the spindle has been practically demonstrated from the start of the industrial development of this technology, as is apparent in particular from French patent no. 1,076,599.
Du fait de l'amélioration des performances des broches de fausse torsion et de l'augmentation des vitesses linéaires des fils, qui, actuellement, dépassent fréquemment les mille mètres par minute (1000 m/min), il a été nécessaire non seulement d'augmenter la longueur des fours pour que le fil reçoive la quantité de calories suffisantes pour son traitement thermique, mais également soit d'allonger de manière pratiquement proportionnelle la longueur du trajet de refroidissement lorsque ce dernier se fait à l'air libre, soit de prévoir des moyens permettant de réaliser un refroidissement accéléré du fil entre la sortie du four et son passage dans la broche de fausse torsion.Due to the improved performance of the false twist pins and the increase in the linear velocities of the wires, which currently frequently exceed one thousand meters per minute (1000 m / min), it has been necessary not only to increase the length of the ovens so that the wire receives the quantity of calories sufficient for its heat treatment, but also either to lengthen in a practically proportional way the length of the cooling path when the latter is done in the open air, or to provide means for achieving accelerated cooling of the wire between the outlet of the oven and its passage through the false twist spindle.
Parmi les différentes solutions envisagées, pour réaliser un tel refroidissement accéléré, il a été proposé de mettre le fil en contact avec une surface refroidie, voire même de le mouiller, ainsi que de le soumettre à l'action d'un jet d'air refroidi. Cette dernière solution, refroidissement par jet d'air, ressort notamment du brevet français no. 1 168 540 (correspondant à l'US-A- 3 058 291).Among the various solutions envisaged, in order to achieve such accelerated cooling, it has been proposed to put the wire in contact with a cooled surface, or even to wet it, as well as to subject it to the action of an air jet. cooled. The latter solution, air jet cooling, is apparent in particular from French patent no. 1,168,540 (corresponding to US-A-3,058,291).
Cette dernière technique de refroidissement par "courant d'air froid" qui, d'une manière générale, consiste à faire passer le fil à l'intérieur d'un tube traversé par un courant d'air frais ou autre produit gazeux, ce courant étant dirigé en sens opposé au sens du passage du fil, si elle permet un refroidissement accéléré, n'a cependant jamais été utilisée industriellement, du moins à la connaissance du Demandeur, ce qui peut s'expliquer par le fait qu'il est difficile de contrôler les conditions de traitement qui peuvent varier d'une position à une autre, compte tenu que le courant d'air peut perturber le déplacement des fils.This last cooling technique by "cold air flow" which, in general, consists in passing the wire inside a tube crossed by a current of fresh air or other gaseous product, this current being directed in the opposite direction to the direction of passage of the wire, if it allows accelerated cooling, has never been used industrially, at least to the knowledge of the Applicant, which can be explained by the fact that it is difficult to control the treatment conditions which can vary from one position to another, taking into account that the air current can disturb the movement of the wires.
Or on a trouvé, et c'est ce qui fait l'objet de la présente invention, un procédé simple, efficace et économique, qui surmonte les inconvénients des procédés antérieurs, permet de refroidir rapidement un fil se déplaçant à grande vitesse, notamment lors d'une opération de texturation telle que par fausse torsion.However, we have found, and this is what is the subject of the present invention, a simple, effective and economical method, which overcomes the drawbacks of the previous methods, makes it possible to rapidly cool a wire moving at high speed, especially during of a texturing operation such as by false twist.
D'une manière générale, le procédé selon l'invention permettant de refroidir un fil en mouvement à la sortie d'un four avant passage dans un organe de traitement tel qu'une broche de fausse torsion, consiste à faire passer ledit fil à l'intérieur d'un tube traversé par un courant d'air frais ou autre produit gazeux, ledit courant d'air étant dirigé dans une direction opposée au sens de passage du fil, et il se caractérise en ce que lors de cette phase de refroidissement, le fil est maintenu en contact avec une surface d'appui ou de guidage disposée coaxialement à l'intérieur du tube traversé par le courant d'air qui s'écoule le long de ladite surface de guidage.In general, the method according to the invention making it possible to cool a wire in motion at the outlet of an oven before passing through a processing member such as a false twist spindle, consists in passing said wire through the inside a tube traversed by a stream of fresh air or other gaseous product, said stream of air being directed in a direction opposite to the direction of passage of the wire, and it is characterized in that during this cooling phase , the wire is kept in contact with a bearing or guide surface arranged coaxially inside the tube through which the air stream which flows along said guide surface passes.
Selon une forme préférentielle de mise en oeuvre du procédé conforme à l'invention, le tube extérieur est de section cylindrique et la surface de guidage coaxiale est elle-même constituée par un élément cylindrique, le courant d'air s'écoulant le long de ladite surface dans l'espace compris entre ledit tube. Comme matériau permettant de réaliser la surface de guidage, on utilisera tout matériau présentant des caractéristiques mécaniques telles qu'il résiste à l'abrasion, sans altérer les propriétés du fil, tel que par exemple de la céramique. Il est cependant avantageux d'utiliser un matériau qui présente également, en plus des caractéristiques précitées, celle d'être également bon conducteur thermique, ce qui permet encore d'améliorer le processus de refroidissement ; un tel matériau peut par exemple être constitué par de l'acier inoxydable ayant reçu un traitement de surface (plasma...).According to a preferred embodiment of the method according to the invention, the outer tube is of cylindrical section and the coaxial guide surface is itself constituted by a cylindrical element, the air stream flowing along said surface in the space between said tube. As the material allowing the guide surface to be produced, any material having mechanical characteristics such that it resists abrasion will be used, without altering the properties of the wire, such as for example ceramic. However, it is advantageous to use a material which also has, in addition to the above characteristics, that of also being a good thermal conductor, which further improves the cooling process; such a material can for example consist of stainless steel having received a surface treatment (plasma, etc.).
Enfin, toujours selon une forme préférentielle de mise en oeuvre du procédé conforme à l'invention, le passage du fil conre la surface de guidage est réalisé de telle sorte qu'il forme une hélice autour de cette dernière ; avantageusement, le fil entoure ladite surface de guidage sur 180° entre son entrée et sa sortie de la zone de refroidissement. Bien entendu, il peut être envisagé de former une hélice présentant un angle entre l'entrée ou la sortie différent de 180° sans sortir du cadre de l'invention. Dans cette forme de réalisation, le guidage du fil est avantageusement obtenu en réalisant la liaison entre la surface de guidage et le tube externe par l'intermédiaire de "pions" disposés aux extrémités de l'ensemble et décalés angulairement l'un par rapport à l'autre. Dans cette forme de réalisation, le tube externe présente également une fente longitudinale facilitant l'introduction du fil ; une telle forme de réalisation permet d'obtenir automatiquement un positionnement de l'hélice contre la surface disposée à l'intérieur du tube externe.Finally, still according to a preferred form of implementation of the method according to the invention, the passage of the wire against the guide surface is carried out so that it forms a helix around the latter; advantageously, the wire surrounds said guide surface over 180 ° between its entry and its exit from the cooling zone. Of course, it can be envisaged to form a helix having an angle between the inlet or the outlet different from 180 ° without departing from the scope of the invention. In this embodiment, the guidance of the wire is advantageously obtained by making the connection between the guide surface and the outer tube by means of "pins" arranged at the ends of the assembly and angularly offset one with respect to the other. In this embodiment, the outer tube also has a longitudinal slot facilitating the introduction of the wire; such an embodiment makes it possible to automatically obtain a positioning of the propeller against the surface disposed inside the outer tube.
L'invention concerne également une installation textile comportant des moyens permettant de refroidir un fil avant la sortie d'un four mettant en oeuvre un tel procédé.The invention also relates to a textile installation comprising means making it possible to cool a yarn before leaving an oven using such a method.
Cette installation se caractérise en ce que les moyens de refroidissement sont constitués par un ensemble comprenant un tube traversé par un courant d'air frais ou autre produit gazeux, dirigé en sens opposé au sens de passage du fil et à l'intérieur duquel est disposée, coaxialement, une surface d'appui pour ledit fil.This installation is characterized in that the cooling means consist of an assembly comprising a tube traversed by a stream of fresh air or other gaseous product, directed in the opposite direction to the direction of passage of the wire and inside which is disposed , coaxially, a bearing surface for said wire.
Selon un mode préférentiel de réalisation conforme à l'invention, ladite surface de guidage ou d'appui se présente sous la forme d'un bloc rectiligne, de section transversale cylindrique, et à l'extérieur duquel vient s'appuyer le fil lors de son déplacement. De préférence, le trajet du fil contre la surface de guidage, est réalisé en formant une hélice entre l'entrée et la sortie de l'ensemble de refroidissement ; dans cette forme de réalisation, le guidage du fil en forme d'hélice est obtenu en prévoyant, au moins une entrée et une sortie de l'ensemble de refroidissement des "pions" reliant la surface cylindrique interne à la surface externe, et qui sont décalés angulairement l'un par rapport à l'autre, de tels éléments permettant non seulement d'assurer le positionnement automatique du fil à l'intérieur de l'ensemble de refroidissement, mais également la liaison entre l'enveloppe externe et le noyau (surface de guidage) interne.According to a preferred embodiment in accordance with the invention, said guide or support surface is in the form of a rectilinear block, of cylindrical cross section, and outside of which comes to bear the wire during its displacement. Preferably, the path of the wire against the guide surface is produced by forming a helix between the inlet and the outlet of the cooling assembly; in this embodiment, the guiding of the helical wire is obtained by providing, at least one inlet and one outlet for the cooling assembly of the "pins" connecting the internal cylindrical surface to the external surface, and which are angularly offset from each other, such elements making it possible not only to ensure the automatic positioning of the wire inside the cooling assembly, but also the connection between the outer casing and the core ( guide surface) internal.
Un tel ensemble de refroidissement est aligné avec la sortie du four et la broche de fausse torsion, et peut être disposé selon n'importe quelle position, soit horizontalement ou légèrement inclinée vers le bas dans le sens de déplacement du fil, soit verticalement ou faisant un angle quelconque par rapport à la verticale.Such a cooling assembly is aligned with the furnace outlet and the false twist spindle, and can be arranged in any position, either horizontally or slightly inclined downward in the direction of movement of the wire, either vertically or making any angle to the vertical.
Avantageusement et en pratique, pour une machine de texturation par fausse torsion permettant de traiter des fils synthétiques (polyamide, polyester ..) à une vitesse de production de mille mètres par minute (1000 m/min) ou plus, et qui, pour un refroidissement naturel du fil à l'air libre, nécessite une distance entre la sortie du four et l'entrée de la broche de fausse torsion de l'ordre de 1,5 mètre, il est possible de réaliser le refroidissement dudit fil conformément à l'invention en utilisant un ensemble ayant une longueur inférieure à un mètre, comportant un tube externe de 25 millimètres de diamètre et, disposé concentriquement, un noyau cylindrique en céramique de 15 millimètres avec une injection d'air, à contre sens du défilement du fil, réalisée à la sortie du dispositif de refroidissement sous une pression comprise entre un et deux bars.Advantageously and in practice, for a false twist texturing machine making it possible to process synthetic yarns (polyamide, polyester, etc.) at a production speed of one thousand meters per minute (1000 m / min) or more, and which, for a natural cooling of the wire in the open air, requires a distance between the outlet of the oven and the inlet of the false twist spindle of the order of 1.5 meters, it is possible to cool the said wire in accordance with the invention using an assembly having a length less than one meter, comprising an outer tube of 25 millimeters in diameter and, concentrically disposed, a cylindrical ceramic core of 15 millimeters with an injection of air, against the direction of travel of the wire , produced at the outlet of the cooling device under a pressure of between one and two bars.
L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce à l'exemple de réalisation décrit ci-après à titre indicatif mais non limitatif, et qui est illustré par les schémas annexés dans lesquels :
- la figure 1 illustre l'ensemble d'une installation de texturation par fausse torsion mettant en oeuvre le procédé conforme à l'invention ;
- la figure 2 est une vue partielle, agrandie, montrant en détail la zone de refroidissement réalisée conformément à l'invention dans une machine de fausse torsion ;
- la figure 3 est une vue de détail, en perspective éclatée, d'un mode de réalisation préférentiel d'un ensemble de refroidissement réalisé conformément à l'invention et monté sur une telle installation.
- Figure 1 illustrates the assembly of a false twist texturing installation implementing the method according to the invention;
- Figure 2 is an enlarged partial view showing in detail the cooling zone produced in accordance with the invention in a false twist machine;
- Figure 3 is a detail view, in exploded perspective, of a preferred embodiment of a cooling assembly produced according to the invention and mounted on such an installation.
Si l'on se reporte aux figures 1 et 2, dans une machine de texturation de fils par fausse torsion mettant en oeuvre le procédé de refroidissement du fil conforme à l'invention, chaque position de travail comprend, disposé entre une zone d'alimentation (1) du fil (2) à traiter et une zone de réception (3) après traitement, un ensemble de transformation dudit fil (2) composé d'éléments disposés dans le prolongement les uns des autres, et accessible par l'opérateur, et qui comporte :
- un premier appel (4) du fil (2) ;
- un dispositif de chauffage (5) de tout type connu (four ouvert ou fermé) ;
- un système de refroidissement, désigné par la référence générale (6), réalisé conformément à l'invention, et dont la structure et le fonctionnement sera vu plus en détail dans la suite de la description ;
- une broche de fausse torsion (7) constituée par une broche à disques ou à courroies croisées conventionnelle ;
- un système d'appel conventionnel (8) disposé en aval de la broche (7) et des moyens de renvidage (3).
- a first call (4) of the wire (2);
- a heating device (5) of any known type (open or closed oven);
- a cooling system, designated by the general reference (6), produced in accordance with the invention, the structure and operation of which will be seen in more detail in the following description;
- a false twist spindle (7) consisting of a disc spindle or conventional crossed belts;
- a conventional call system (8) arranged downstream of the spindle (7) and winding means (3).
Eventuellement, un second four de fixation peut être prévu entre le dernier appel (8) et le système de renvidage (3).Optionally, a second fixing oven can be provided between the last call (8) and the winding system (3).
Ainsi que cela est montré plus en détail à la figure 3, la zone de refroidissement réalisée conformément à l'invention, est constituée essentiellement par un ensemble (6) disposé dans le prolongement et la proximité de la sortie du four (5), et de préférence alignée avec la broche de fausse torsion (7) pour obtenir un trajet sensiblement rectiligne du fil. Cet ensemble de refroidissement est constitué par un tube (10), de préférence de section cylindrique, et qui comporte une fente permettant la mise en place du fil (2) lors de l'opération de lancement. A l'intérieur de ce tube (10), est disposée, coaxialement, une surface de guidage cylindrique (9) à base de tout matériau approprié, tel que notamment céramique, ou acier inoxydable ayant reçu un traitement de surface tel que par exemple un traitement plasma.As shown in more detail in FIG. 3, the cooling zone produced in accordance with the invention consists essentially of an assembly (6) arranged in the extension and near the outlet of the oven (5), and preferably aligned with the false twist pin (7) to obtain a substantially straight path of the wire. This cooling assembly is constituted by a tube (10), preferably of cylindrical section, and which comprises a slot allowing the positioning of the wire (2) during the launching operation. Inside this tube (10) is arranged, coaxially, a cylindrical guide surface (9) based on any suitable material, such as in particular ceramic, or stainless steel having received a surface treatment such as for example a plasma treatment.
A titre indicatif, pour une machine de texturation fonctionnant à une vitesse de mille mètres par minute (1000 m/min) ou plus, un tel ensemble (6) a une longueur de 300 millimètres, un diamètre pour le tube externe (10) de 25 millimètres, et un diamètre pour la surface de guidage cylindrique (9) de 15 millimètres. Des moyens de guidage additionnels (11,12) pour le fil (2) sont de préférence prévus en amont et en aval de l'ensemble de refroidissement (6) et permettent de faire suivre au fil (2) un trajet en forme d'hélice contre la surface (9). Dans la forme de réalisation préférentielle illustrée, un tel trajet sous forme d'hélice est obtenu en utilisant comme moyens de guidage (11,12) deux "pions" disposés à chacune des extrémités de l'ensemble (6), et qui sont décalés angulairement l'un par rapport à l'autre. Par ailleurs, une fente est prévue pour faciliter l'enfilage du fil. De cette manière, on obtient, lors de la mise en route de la machine, un positionnement automatique du fil en hélice autour de la surface (9), les pions (11,12) jouant leur rôle d'éléments de liaison et de centrage de la surface de guidage cylindrique (9) par rapport au tube externe (10).As an indication, for a texturing machine operating at a speed of a thousand meters per minute (1000 m / min) or more, such an assembly (6) has a length of 300 millimeters, a diameter for the outer tube (10) of 25 millimeters, and a diameter for the cylindrical guide surface (9) of 15 millimeters. Additional guide means (11,12) for the wire (2) are preferably provided upstream and downstream of the cooling assembly (6) and allow the wire (2) to follow a path in the form of propeller against the surface (9). In the preferred embodiment illustrated, such a path in the form of a helix is obtained by using as guide means (11,12) two "pins" disposed at each end of the assembly (6), and which are offset angularly one in relation to the other. Furthermore, a slot is provided to facilitate threading of the wire. In this way, when the machine is started up, the helical wire is automatically positioned around the surface (9), the pins (11,12) playing their role of connecting and centering elements. of the cylindrical guide surface (9) relative to the outer tube (10).
Conformément à l'invention, à la sortie de l'ensemble (6), débouche un conduit (13) relié à une source d'air comprimé, permettant d'insuffler dans l'espace compris entre le noyau (9) et l'enveloppe externe (10), un courant d'air s'écoulant dans une direction inverse à celle de l'avance du fil (2) et produisant un effet venturi à l'intérieur dudit ensemble. La pression d'air insufflé à l'intérieur de l'ensemble de refroidissement, est en général faible et de l'ordre d'un (1) bar, le débit étant important compte tenu du fait qu'il se produit un appel additionnel d'air depuis la sortie en direction de l'entrée de l'enveloppe (10). Le débit d'air peut être régulé par tout moyen approprié et est fonction de la nature du fil, de sa température et de sa vitesse. L'alimentation en air peut être réalisée soit de manière individuelle pour chaque position de la machine, soit au moyen d'une alimentation commune pour l'ensemble des positions.According to the invention, at the outlet of the assembly (6), there opens a conduit (13) connected to a source of compressed air, making it possible to breathe into the space between the core (9) and the outer casing (10), a current of air flowing in a direction opposite to that of the advance of the wire (2) and producing a venturi effect inside said assembly. The air pressure blown inside the cooling assembly is generally low and of the order of one (1) bar, the flow rate being significant taking into account the fact that there is an additional call. of air from the outlet towards the inlet of the envelope (10). The air flow can be regulated by any suitable means and depends on the nature of the wire, its temperature and its speed. The air supply can be carried out either individually for each position of the machine, or by means of a common supply for all positions.
Grâce à une telle manière de procéder, il est possible de refroidir parfaitement le fil, sans altérer ses propriétés textiles, et ce en ayant un encombrement minimal. Ceci s'explique par le fait que conformément à l'invention, l'air refroidit le fil à contresens et brise donc la gaine d'air chaud qui l'entoure, le refroidissement étant par ailleurs accentué par le contact avec la surface de guidage du fil ce qui, en résumé, permet d'obtenir un refroidissement combinant à la fois une extraction des calories par convexion et conduction. De plus, la surface de guidage (9) contre laquelle le fil s'appuie lors de son passage à l'intérieur de l'ensemble de refroidissement, permet non seulement de favoriser son refroidissement, mais également élimine tous risques de perturbations ou défauts créés par l'air s'écoulant à l'intérieur de l'ensemble de refroidissement. Il convient également de noter que le tube fendu extérieur permet non seulement de canaliser l'air, mais provoque un effet venturi entraînant un gros débit naturel, permettant d'enlever la gaine d'air chaud qui accompagne le fil.Thanks to such a procedure, it is possible to cool the yarn perfectly, without altering its textile properties, and this while having a minimal bulk. This is explained by the fact that in accordance with the invention, the air cools the thread in the opposite direction and therefore breaks the hot air sheath which surrounds it, the cooling being moreover accentuated by contact with the guide surface. wire which, in summary, provides cooling combining both an extraction of calories by convection and conduction. In addition, the guide surface (9) against which the wire rests during its passage inside the cooling assembly, not only promotes its cooling, but also eliminates any risk of disturbances or faults created by the air flowing inside the cooling assembly. It should also be noted that the external split tube not only makes it possible to channel the air, but causes a venturi effect resulting in a large natural flow, making it possible to remove the sheath of hot air which accompanies the wire.
Grâce à une telle solution, il est possible de réaliser des machines très compactes, dont tous les organes sont facilement accessibles par un opérateur tel que cela est représenté à la figure 1. Dans l'exemple illustré par cette figure 1, les organes de traitement (four, ensemble de refroidissement, broche) sont disposés horizontalement, mais il pourrait être envisagé de les disposer verticalement ou en faisant appel à un angle quelconque par rapport à la verticale.Thanks to such a solution, it is possible to produce very compact machines, all of the organs of which are easily accessible by an operator as shown in FIG. 1. In the example illustrated by this FIG. 1, the treatment organs (oven, cooling assembly, spit) are arranged horizontally, but it could be envisaged to arrange them vertically or by using any angle with respect to the vertical.
Claims (7)
- Process allowing the cooling of a yarn (2) in motion at the exit from a heater (5) before it passes through a treatment member such as a false twist spindle (7), consisting in passing the said yarn inside an external tube (10) through which a current of cool air or other gaseous product passes, the said current of air being directed in a direction opposite to the direction of advance of the yarn, characterised in that during this cooling phase, the yarn is held in contact with a support or guide surface (9) arranged coaxially inside the tube (10) through which the current of air which flows in the space contained between the external tube (10) and the said guide surface passes.
- Process according to claim 1, characterised in that the external tube (10) through which the current of air passes is of cylindrical section and the coaxial guide surface (9) also consists of a cylindrical element based on a hard and smooth material.
- Process according to claim 1, characterised in that the coaxial guide surface is based on a ceramic.
- Process according to claim 1, characterised in that the guide surface (9) is based on stainless steel which has received a surface treatment.
- Textile installation which comprises cooling means (6) to cool a yarn (2) at the exit from heater (5) and before at passes through a treatment member such as a false twist spindle installation in which the cooling means (6) consists of an assembly comprising a tube (10) through which a current of cool air or other gaseous product passes, directed in the opposite direction to the direction of advance of the yarn (2) characterised in that inside the external tube (10) is arranged, coaxially, a guide or support surface (9) for the said yarn.
- Installation according to claim 5, characterised in that the tube (10) comprises a slot along one of its generatrices, the spiral guiding along the surface (9) being obtained by means of two controllers (11,12), which are angularly offset with respect to each other, arranged at each end of the assembly and connecting the guide or support surface (9) to the external tube (10).
- Installation according to claim 6, characterised in that the said guide or support surface (9) is in the form of a rectilinear block, of cylindrical cross-section and outside which the yarn (2) is supported during its motion, the path of the yarn being producing by forming a spiral along this surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9205541 | 1992-04-29 | ||
| FR929205541A FR2690694B1 (en) | 1992-04-29 | 1992-04-29 | PROCESS FOR THE TREATMENT OF CHEMICAL THREADS, PARTICULARLY DURING A TEXTURING OPERATION, AND TEXTILE INSTALLATION IMPLEMENTING THIS PROCESS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0568467A1 EP0568467A1 (en) | 1993-11-03 |
| EP0568467B1 true EP0568467B1 (en) | 1997-06-11 |
Family
ID=9429556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93420129A Expired - Lifetime EP0568467B1 (en) | 1992-04-29 | 1993-03-23 | Method for the processing of chemical yarns notably during a texturing process and the textile machine for carrying out this method |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5359845A (en) |
| EP (1) | EP0568467B1 (en) |
| JP (1) | JP3257857B2 (en) |
| CN (1) | CN1032377C (en) |
| DE (1) | DE69311436T2 (en) |
| FR (1) | FR2690694B1 (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2571180B2 (en) * | 1992-12-08 | 1997-01-16 | 東洋電機株式会社 | Heating device for false twisting |
| DE69510955T2 (en) * | 1994-11-22 | 1999-12-09 | Icbt Yarn Roanne | METHOD FOR STRETCH TEXTURING BY FALSE THREADS AND OVEN FOR APPLYING THIS METHOD |
| TW317579B (en) * | 1995-04-11 | 1997-10-11 | Barmag Barmer Maschf | |
| GB9510681D0 (en) * | 1995-05-23 | 1995-07-19 | Rieter Scragg Ltd | Textile machine |
| FR2736937B1 (en) * | 1995-07-19 | 1997-08-14 | Icbt Roanne | LOW-TORSION STRETCHING-TEXTURING MACHINE |
| JP3490844B2 (en) * | 1996-05-30 | 2004-01-26 | 東レエンジニアリング株式会社 | Cooling device for false twisting machine |
| GB9700436D0 (en) * | 1997-01-10 | 1997-02-26 | Rieter Scragg Ltd | Texturing yarn |
| EP0879907B1 (en) * | 1997-05-24 | 2003-04-09 | B a r m a g AG | Texturing machine |
| DE19831734A1 (en) * | 1998-07-15 | 2000-01-20 | Bayer Ag | ABS-type thermoplastic molding composition is prepared using a combination of an azo compound and a persulfate compound |
| US6197628B1 (en) | 1998-08-27 | 2001-03-06 | Micron Technology, Inc. | Ruthenium silicide diffusion barrier layers and methods of forming same |
| JP4503895B2 (en) * | 1999-05-27 | 2010-07-14 | バルマーク アクチエンゲゼルシヤフト | Textile machinery |
| DE102006040065A1 (en) * | 2006-08-26 | 2008-02-28 | Oerlikon Textile Gmbh & Co. Kg | Procedure for thermal treatment of a running yarn at a twisting machine with workplaces, comprises passing the yarn by a delivery mechanisms to a device for the thermal treatment of the yarn in tension free manner and spooling the yarn |
| JP5133909B2 (en) * | 2009-01-06 | 2013-01-30 | Ｔｍｔマシナリー株式会社 | Yarn cooling device, textile machine, and yarn cooling method |
| JP2012051730A (en) | 2010-08-06 | 2012-03-15 | Ishida Co Ltd | Sorting device |
| EP2565135A1 (en) | 2011-08-30 | 2013-03-06 | Ishida Co., Ltd. | Sorter |
| CN102517718A (en) * | 2011-11-15 | 2012-06-27 | 海宁市建利纺织有限公司 | False twisting machine for hairy curved yarns |
| CN103938327B (en) * | 2014-03-27 | 2016-03-30 | 吴江明佳织造有限公司 | Double branch pipe wrapped yarn is for yarn tracheae |
| EP2982785B1 (en) * | 2014-08-06 | 2016-04-06 | Karl Mayer Textilmaschinenfabrik GmbH | Device and method for straightening filaments |
| JP6861807B2 (en) * | 2016-10-08 | 2021-04-21 | エーリコン テクスティル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトＯｅｒｌｉｋｏｎ Ｔｅｘｔｉｌｅ ＧｍｂＨ ＆ Ｃｏ． ＫＧ | A device for cooling the heated yarn |
| DE102017003189A1 (en) * | 2017-04-01 | 2018-10-04 | Oerlikon Textile Gmbh & Co. Kg | Melt spinning apparatus |
| CN109252266B (en) * | 2018-10-26 | 2023-09-12 | 浙江恒远化纤集团有限公司 | Cooling device of elasticizer |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1076599A (en) * | 1952-05-23 | 1954-10-27 | Method and apparatus for making yarns and crimped fibers | |
| US3058291A (en) * | 1956-02-15 | 1962-10-16 | Heberlein Patent Corp | Permanently crimped synthetic textile products and method for producing the same |
| FR1168540A (en) * | 1956-02-15 | 1958-12-09 | Heberlein & Co Ag | Process and device for the manufacture of permanently crimped textile yarns and yarn conforming to that thus obtained |
| GB976785A (en) * | 1961-12-22 | 1964-12-02 | Billion & Cie | Improvements in or relating to twisting machines executing a false twist |
| CH445714A (en) * | 1966-02-03 | 1967-10-31 | Heberlein & Co Ag | Suction device for a device for texturing textile yarns consisting at least partially of thermoplastic material |
| US3696601A (en) * | 1968-08-12 | 1972-10-10 | Henry W Mccard | Textile heating and cooling |
| GB1287575A (en) * | 1969-12-04 | 1972-08-31 | Teijin Seiki Co Ltd | A yarn heater |
| DE2248808A1 (en) * | 1971-10-29 | 1973-05-03 | Heberlein & Co Ag | DEVICE FOR FALSE TWIST TEXTURING AND RE-FIXING OF YARNS MADE OF THERMOPLASTIC SYNTHETIC MATERIAL IN CONTINUOUS WORKING METHOD |
| GB1537543A (en) * | 1976-03-23 | 1978-12-29 | Scragg & Sons | Yarn texturing machine |
| US4141206A (en) * | 1976-03-23 | 1979-02-27 | Ernest Scragg & Sons Limited | Yarn texturing machine |
| CH617810B (en) * | 1978-04-19 | Rieter Ag Maschf | METHOD AND DEVICE FOR COOLING A THREAD. | |
| FR2670807A1 (en) * | 1990-12-21 | 1992-06-26 | Icbt Roanne | DEVICE FOR THE HEAT TREATMENT OF MOVING THREADS. |
-
1992
- 1992-04-29 FR FR929205541A patent/FR2690694B1/en not_active Expired - Fee Related
-
1993
- 1993-02-26 US US08/023,373 patent/US5359845A/en not_active Expired - Fee Related
- 1993-03-23 DE DE69311436T patent/DE69311436T2/en not_active Expired - Fee Related
- 1993-03-23 EP EP93420129A patent/EP0568467B1/en not_active Expired - Lifetime
- 1993-04-01 CN CN93103898A patent/CN1032377C/en not_active Expired - Fee Related
- 1993-04-16 JP JP08955693A patent/JP3257857B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE69311436T2 (en) | 1997-10-23 |
| FR2690694A1 (en) | 1993-11-05 |
| FR2690694B1 (en) | 1994-06-17 |
| DE69311436D1 (en) | 1997-07-17 |
| JPH0610230A (en) | 1994-01-18 |
| CN1032377C (en) | 1996-07-24 |
| CN1080967A (en) | 1994-01-19 |
| US5359845A (en) | 1994-11-01 |
| JP3257857B2 (en) | 2002-02-18 |
| EP0568467A1 (en) | 1993-11-03 |
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