EP0616060A1 - Apparatus for drawing, by falsetwisting, textile fibre tows intended for spinning - Google Patents

Apparatus for drawing, by falsetwisting, textile fibre tows intended for spinning Download PDF

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Publication number
EP0616060A1
EP0616060A1 EP94830115A EP94830115A EP0616060A1 EP 0616060 A1 EP0616060 A1 EP 0616060A1 EP 94830115 A EP94830115 A EP 94830115A EP 94830115 A EP94830115 A EP 94830115A EP 0616060 A1 EP0616060 A1 EP 0616060A1
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EP
European Patent Office
Prior art keywords
rotor
roller
track
appendage
small cylinder
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.)
Withdrawn
Application number
EP94830115A
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German (de)
French (fr)
Inventor
Ida Petracchi
Iolanda Bonacchi
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Individual
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Individual
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Publication date
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Publication of EP0616060A1 publication Critical patent/EP0616060A1/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—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
    • D02G1/04—Devices for imparting false twist
    • D02G1/06—Spindles

Definitions

  • the invention relates to a device for drawing and simultaneous provisional torsion (false torsion) for the production of yarns especially of carded type.
  • This device comprises: an inner circular track secured to a first rotor which rotates in a support whose axis coincides with that of the track; at least one roller - like a small cylinder - rotating on itself by taking place on said inner track being supported by a second rotor coaxial with the first rotor; a passage for the wire in formation.
  • the wicking material for the formation of the wire is engaged between the roller and the inner track, which in the operation of the device impose on the wire in formation a progression (and therefore a stretching) and a twist.
  • the device provides a bias and an elastic drive of this roller or small cylinder against the circular track - in accordance with a centrifugal action - to obtain an adequate pinching pressure of the material between the roller and the inner circular track.
  • the device is perfected to ensure the desired operation, to simplify the production of the device itself, to obtain an effective guide of the material which must reach the nip between the track and the roller, to avoid the consequences of the arrival irregularities in the material, to avoid the risk of the material rolling up on the roller and to obtain other aims and advantages developed in the following text.
  • the first rotor is integral with a profiled appendage so as to partially surround the roller and to guide the wire in formation thus constituting the wire guide housing.
  • the outer surface of this appendage can be provided with at least one roughly helical groove acting as a wire guide.
  • the profiled appendage can be symmetrical and can have two symmetrical grooves acting as a wire guide. This profiled appendage can be externally in an approximately osculating position with the outlet orifice of the hole passing through the first rotor.
  • the elastic component can be an elastic thickness of rubber or equivalent material. This component will be easily removable with the indoor track.
  • a crown 3 on which are mounted ball bearings 5 allowing the rotation of a body 7; a component 7A fixed on the body 7 laterally has the shape of a pulley, as a transmission member for the rotation of said body 7, for example by means of a toothed belt 9 or other preferably positive transmission system.
  • the body 7 carries ball bearings 10 which allow rotation independently and coaxially to the body 7 of a second annular rotor 12, also actuated by toothed belt 13 or equivalent system.
  • An inner circular track 14A is formed in a ring 14, which is mounted on the rotor 12 by means of a ring 16 of high elastic deformation, of rubber or similar material.
  • the track 14 A and the ring 16 can be installed in the lower part of the rotor 12 as shown on the left of FIG. 1, or be housed in the crown 12A fixed on said rotor 12 as shown on the right of FIG. 1 .
  • a roller or small cylinder 20 freely rotating on the pivot 18.
  • the roller 20 is in contact with the inner surface 14A of the crown 14. The contact can occur with a certain pressure and therefore with a certain interference, to allow the pinching of the spinning wick indicated by M, introduced between the track 14A and the roller 20.
  • the elastic reactions of the ring 16 allow correct contact between the inner surface 14A of the crown 14 and the outer surface of the roller 20; the track and the roller may both have a cylindrical development or else also a modified and therefore different profile of revolution compared to the cylindrical conformation.
  • the body 7 is traversed by a hole 22 which may have a conical or flared upper mouth 22A to facilitate the threading of the material M delivered by a supply system controlled by cylinders C, for example.
  • the body 7; 7A constituting the first rotor, rotates at a speed different from that of the second rotor 12, always around a common axis; the rotor 12 drives in integral rotation the track 14A which can find its correct position due to the thickness and the elasticity of the ring 16, as indicated above.
  • the roller 20 due to the difference in speeds of the two rotors 7, 7A and respectively 12, obviously turns on itself by taking place on the track 14A as a function of the speed difference between the two rotors.
  • the material M passes through the hole 22, 22A, arrives at the lower outlet of the hole 22 where it is deflected towards the roller 20 to be introduced and pinched in the contact line of the roller 20 and the track 14A; therefore, the material undergoes upstream of the point of contact between the track 14A and the roller 20 an axial traction effect therefore of stretching according to the arrow FS and also a torsion effect propagating from the device up to wick feed system shown in C in Figure 1.
  • the body 7 has a profiled appendage 107 which develops like a wire guide housing at the same time cleaner, to partially surround the roller 20 of a reduced and relatively reduced thickness; on the outside, this appendage 107 forms a surface substantially tangent to the terminal edge of the hole 22.
  • wire guide of appendix 107 there is provided on its outer surface a roughly helical groove 109 which begins in the end part of the hole 22 to the final lateral edge of the appendix, this to bring the wire to the surface of the roller 20 near the osculating contact area between the track 14A and the roller 20 itself.
  • the wire guide is designed to accompany it in a projection around and at a limited distance from the roller 20 and to limit the free trajectory of the material between the channel 109 and the contact zone between the track 14A and the roller 20.
  • the groove or grooves 109 are inclined so as to allow the wire to reach a pinching point which is more or less high along the contact line, preferably as high as possible.
  • the housing 107 is also able to clean the surface of the roller 20 when a cleaning product is inserted on the interior surface of the housing.
  • the appendix 107 which forms the wire guide casing partially surrounding the surface of the roller 20, is produced in one piece with the body 7.
  • This element has a discoid flange 301 for application to the body 207 and forms an appendage 307 similar to that 7 to form a wire guide housing with similar function.
  • FIG. 5 is also shown, in a limited manner, a different mounting solution for the rotors with ball bearings, which have been developed as shown in 205 and 210 as double raceways for the two crowns of balls respective.
  • the mounting of the roller 220 is also slightly modified compared to the solution of FIGS. 1 to 4, but with perfectly equivalent function.
  • roller 20 or 220 is rigidly mounted with a fixed center distance relative to the main axis of the device and of the rotors 7 and 12 and in particular of the rotor 7, on which it is mounted, with screw fixing or expansion system to allow easy assembly and disassembly.
  • the circular track 14 or 214 is separated and resiliently supported by a crown 16 or 216 of rubber or similar material.
  • This crown is glued or vulcanized either on a single interior or exterior face, or on both sides, or simply retained by shoulders as illustrated in the drawing.
  • the whole track, elastic ring and support and elastic rings group can be applied to the device with ease of assembly, disassembly and maintenance, or the track and relative elastic ring can be directly applied to the seat.
  • the track thus produced also allows: (1) oscillations in all directions; (2) automatic alignment and perfect contact with the roller although rigidly mounted; (3) adaptation to different rate numbers, ie thickness of the wire at work; (4) the passage of any thickening of the wire due for example to fittings or reattachments of material; (5) the use of a high surface area of the elastic crown guaranteeing an unlimited service life; (6) the use of a very elastic quality of rubber; (7) an appropriate thickness without limitation of shape, size and morphology; (8) optimal pressure interference between track and roller; (9) negligible wear over time, the rubber being in contact neither with the wire nor with the roller.
  • appendix 107 or 307 acting as a wire guide casing avoids possible windings of the wire on the roller; acts as a roller cleaner with the possible application of a layer of felt or the like; allows the wicking wire to be guided (by means of helical grooves 109 or the like), even with the possibility of rotations in both directions and with support of the material towards the pinching point between the track and the roller.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

One of the two rotors (7, 12), rotating coaxially and independently at different speeds, is provided with a through-hole (22) and with a roller or small cylinder (20) mounted so as to rotate idly about an axis which is parallel and offset with respect to the common axis of the two rotors (7, 12); a rigid internal circular track (14) is mounted on the other rotor (12) with, in between, a ring (16) having high elastic flexibility. Solidly fastened to the first rotor (7) is a profiled appendage (107) for partially surrounding the roller or small cylinder (20) and for forming a yarn-guide casing (FIG. 1). <IMAGE>

Description

L'invention concerne un dispositif d'étirage et de simultanée torsion provisoire (fausse torsion) pour la production de fils spécialement de type cardé.The invention relates to a device for drawing and simultaneous provisional torsion (false torsion) for the production of yarns especially of carded type.

Ce dispositif comprend : une piste circulaire intérieure solidaire d'un premier rotor qui tourne dans un support dont l'axe coïncide avec celui de la piste; au moins un rouleau - comme un petit cylindre - tournant sur lui-même en se déroulant sur la dite piste intérieure étant supporté d'un deuxième rotor coaxial au premier rotor; un passage pour le fil en formation.This device comprises: an inner circular track secured to a first rotor which rotates in a support whose axis coincides with that of the track; at least one roller - like a small cylinder - rotating on itself by taking place on said inner track being supported by a second rotor coaxial with the first rotor; a passage for the wire in formation.

La matière en mèche pour la formation du fil est engagée entre le rouleau et la piste intérieure, lesquels dans le fonctionnement du dispositif imposent au fil en formation une progression ( et de ce fait un étirage ) et une torsion.The wicking material for the formation of the wire is engaged between the roller and the inner track, which in the operation of the device impose on the wire in formation a progression (and therefore a stretching) and a twist.

Le dispositif prévoit une sollicitation et un entraînement élastique de ce rouleau ou petit cylindre contrela piste circulaire - en concordance avec une action centrifuge - pour obtenir une pression adéquate de pinçage de la matière entre le rouleau et la piste circulaire intérieure.The device provides a bias and an elastic drive of this roller or small cylinder against the circular track - in accordance with a centrifugal action - to obtain an adequate pinching pressure of the material between the roller and the inner circular track.

Le dispositif est perfectionné pour assurer le fonctionnement désiré, pour simplifier la réalisation du dispositif lui-même, pour obtenir un guide efficace de la matière qui doit atteindre la zone de pinçage entre la piste et le rouleau, pour éviter les conséquences de l'arrivée d'irrégularités dans la matière, pour éviter le risque d'enroulement de la matière sur le rouleau et pour obtenir d'autres buts et avantages développés dans le texte suit.The device is perfected to ensure the desired operation, to simplify the production of the device itself, to obtain an effective guide of the material which must reach the nip between the track and the roller, to avoid the consequences of the arrival irregularities in the material, to avoid the risk of the material rolling up on the roller and to obtain other aims and advantages developed in the following text.

En substance, le dispositif simultané d'étirage et de fausse torsion selon l'invention comprend en combinaison :

  • deux rotors tournants coaxialement et indépendamment à des vitesses différentes;
  • sur un premier rotor un trou traversant et un rouleau ou petit cylindre monté pour tourner librement en folle autour d'un axe parallèle et décentré par rapport à l'axe commun des deux rotors;
  • sur le second rotor une piste circulaire intérieure rigide, montée avec l'interposition d'une composante élastique de souplesse élevée, pour permettre l'adaptation entre le rouleau et la piste.
In essence, the simultaneous stretching and false twist device according to the invention comprises in combination:
  • two rotors rotating coaxially and independently at different speeds;
  • on a first rotor, a through hole and a roller or small cylinder mounted to freely rotate madly about an axis parallel and off-center with respect to the common axis of the two rotors;
  • on the second rotor, a rigid inner circular track, mounted with the interposition of an elastic component of high flexibility, to allow adaptation between the roller and the track.

Avantageusement au premier rotor est solidaire un appendice profilé de manière à entourer partiellement le rouleau et à guider le fil en formation constituant ainsi carter guide-fil.Advantageously, the first rotor is integral with a profiled appendage so as to partially surround the roller and to guide the wire in formation thus constituting the wire guide housing.

La surface extérieure de cet appendice peut être pourvue d'au moins une rainure à peu près hélïcoidale faisant fonction de guide-fil. L'appendice profilé peut être symétrique et peut présenter deux rainures symétriques faisant fonction de guide-fil. Cet appendice profilé peut être extérieurement en position à peu près osculatrice avec l'orifice de sortie du trou traversant le premier rotor.The outer surface of this appendage can be provided with at least one roughly helical groove acting as a wire guide. The profiled appendage can be symmetrical and can have two symmetrical grooves acting as a wire guide. This profiled appendage can be externally in an approximately osculating position with the outlet orifice of the hole passing through the first rotor.

En pratique la composante élastique peut être une épaisseur élastique en caoutchouc ou matière équivalente. Cette composante sera aisément démontable avec la piste intérieure.In practice, the elastic component can be an elastic thickness of rubber or equivalent material. This component will be easily removable with the indoor track.

L'invention sera mieux comprise en suivant la description et le dessin annexé; celui-ci montre à titre d'exemple une illustration non limitative de l'invention même. Dans le dessin : la

  • figure 1 montre une vue en coupe axiale du dispositif d'étirage et de similtanée fausse torsion selon une première forme de réalisation et variant légèrement dans les côtés gauche et droit; les
  • figures 2, 3 et 4 montrent un détail de la figure 1 avec certaines parties non sectionnées et aussi des vues et coupes selon III-III et IV-IV de la figure 2; et la
  • figure 5 montre une autre forme de réalisation par rapport à l'exemple précédent, toujours variant légèrement dans les parties gauche et droite.
The invention will be better understood by following the description and the attached drawing; this shows by way of example a non-limiting illustration of the invention itself. In the drawing:
  • Figure 1 shows an axial sectional view of the stretching device and similar false twist according to a first embodiment and varying slightly in the left and right sides; the
  • Figures 2, 3 and 4 show a detail of Figure 1 with certain parts not sectioned and also views and sections along III-III and IV-IV of Figure 2; and the
  • Figure 5 shows another embodiment compared to the previous example, still varying slightly in the left and right parts.

Ainsi qu'illustré dans le dessin en annexe, sur un support 1 est fixée une couronne 3 sur laquelle sont montés des roulements à billes 5 permettant la rotation d'un corps 7; une composante 7A fixé sur le corps 7 a latéralement la forme d'une poulie, comme organe de transmission pour la rotation dudit corps 7, par exemple au moyen d'une courroie dentée 9 ou autre système de transmission de préférence positive. Le corps 7 porte des roulements à billes 10 qui permettent la rotation indépendamment et coaxialement au corps 7 d'un deuxième rotor 12 annulaire, actionné également par courroie dentée 13 ou système équivalent. Une piste circulaire interieure 14A est formée dans une couronne 14, qui est montée sur le rotor 12 au moyen d'un anneau 16 à déformation élastique élevée, de caoutchouc ou matière similaire. La piste 14 A et l'anneau 16 peuvent être installés dans la partie inférieure du rotor 12 comme montré sur la gauche de la figure 1, ou être logée dans la couronne 12A fixée sur ledit rotor 12 comme montré sur la droite de la figure 1.As illustrated in the attached drawing, on a support 1 is fixed a crown 3 on which are mounted ball bearings 5 allowing the rotation of a body 7; a component 7A fixed on the body 7 laterally has the shape of a pulley, as a transmission member for the rotation of said body 7, for example by means of a toothed belt 9 or other preferably positive transmission system. The body 7 carries ball bearings 10 which allow rotation independently and coaxially to the body 7 of a second annular rotor 12, also actuated by toothed belt 13 or equivalent system. An inner circular track 14A is formed in a ring 14, which is mounted on the rotor 12 by means of a ring 16 of high elastic deformation, of rubber or similar material. The track 14 A and the ring 16 can be installed in the lower part of the rotor 12 as shown on the left of FIG. 1, or be housed in the crown 12A fixed on said rotor 12 as shown on the right of FIG. 1 .

Immédiatement sous la face inférieure du corps 7, est monté au moyen d'un pivot fixe 18 un rouleau ou petit cylindre 20 tournant librement sur le pivot 18. Le rouleau 20 est en contact avec la surface intérieure 14A de la couronne 14. Le contact peut se produire avec une certaine pression et donc avec une certaine interférence, pour permettre le pinçage de la mèche à filer indiquée par M, introduite entre la piste 14A et le rouleau 20.Immediately under the underside of the body 7, is mounted by means of a fixed pivot 18 a roller or small cylinder 20 freely rotating on the pivot 18. The roller 20 is in contact with the inner surface 14A of the crown 14. The contact can occur with a certain pressure and therefore with a certain interference, to allow the pinching of the spinning wick indicated by M, introduced between the track 14A and the roller 20.

Le réactions élastiques de l'anneau 16 permettent un contact correct entre la surface intérieure 14A de la couronne 14 et la surface extérieure du rouleau 20; la piste et le rouleau peuvent avoir tous les deux un développement cylindrique ou bien aussi un profil de révolution modifié et donc différent par rapport à la conformation cylindrique.The elastic reactions of the ring 16 allow correct contact between the inner surface 14A of the crown 14 and the outer surface of the roller 20; the track and the roller may both have a cylindrical development or else also a modified and therefore different profile of revolution compared to the cylindrical conformation.

Le corps 7 est traversé par un trou 22 qui peut avoir une embouchure supérieure 22A conique ou évasée pour faciliter l'enfilage de la matière M délivrée par un système d'alimentation contrôlé par des cylindres C, par exemple.The body 7 is traversed by a hole 22 which may have a conical or flared upper mouth 22A to facilitate the threading of the material M delivered by a supply system controlled by cylinders C, for example.

Le corps 7; 7A,constituant le premier rotor,tourne à une vitesse différente de celle du deuxième rotor 12, toujours autour d'un axe commun; le rotor 12 entraîne en rotation solidaire la piste 14A qui peut trouver sa position correcte du fait de l'épaisseur et de l'élasticité de l'anneau 16, comme indiqué ci-dessus.The body 7; 7A, constituting the first rotor, rotates at a speed different from that of the second rotor 12, always around a common axis; the rotor 12 drives in integral rotation the track 14A which can find its correct position due to the thickness and the elasticity of the ring 16, as indicated above.

Le rouleau 20, du fait de la différence de vitesses des deux rotors 7, 7A et respectivement 12, tourne évidemment sur lui-même en se déroulant sur la piste 14A en fonction de la différence de vitesse entre les deux rotors.The roller 20, due to the difference in speeds of the two rotors 7, 7A and respectively 12, obviously turns on itself by taking place on the track 14A as a function of the speed difference between the two rotors.

La matière M passe dans le trou 22, 22A, arrive à la sortie inférieure du trou 22 où elle est déviée vers le rouleau 20 pour être introduite et pincée dans la ligne de contact du rouleau 20 et de la piste 14A; de ce fait, la matière subit en amont du point de contact entre la piste 14A et le rouleau 20 un effet de traction axiale donc d'étirage selon la flèche F-S et également un effet de torsion se propageant du dispositif vers le haut jusqu'au système d'alimentation de la mèche indiqué en C à la figure 1.The material M passes through the hole 22, 22A, arrives at the lower outlet of the hole 22 where it is deflected towards the roller 20 to be introduced and pinched in the contact line of the roller 20 and the track 14A; therefore, the material undergoes upstream of the point of contact between the track 14A and the roller 20 an axial traction effect therefore of stretching according to the arrow FS and also a torsion effect propagating from the device up to wick feed system shown in C in Figure 1.

Avec la variation des paramètres de la commande de rotation de chacun des deux rotors au moyen des courroies 9 et 13 et l'effet d'appel que cela va générer, il est possible de faire varier les conditions d'étirage et de fausse torsion; cette fausse torsion se perd en aval du point de contact du rouleau 20 et la piste 14A,tandis que la matière M1 la sortie du dispositif descend pour être traitée dans la phase suivante de filature.With the variation of the parameters of the rotation control of each of the two rotors by means of the belts 9 and 13 and the call effect that this will generate, it is possible to vary the conditions of stretching and false twist; this false twist is lost downstream of the point of contact of the roller 20 and the track 14A, while the material M1 the output of the device descends to be processed in the next phase of spinning.

En correspondance avec l'extrémité inférieure du trou 22, le corps 7 présente un appendice profilé 107 qui se développe comme un carter-guide fil en même temps nettoyeur, pour entourer partiellement le rouleau 20 d'une épaisseur amoindrie et relativement réduite; à l'extérieur, cet appendice 107 forme une surface substantiellement tangente au bord terminal du trou 22.In correspondence with the lower end of the hole 22, the body 7 has a profiled appendage 107 which develops like a wire guide housing at the same time cleaner, to partially surround the roller 20 of a reduced and relatively reduced thickness; on the outside, this appendage 107 forms a surface substantially tangent to the terminal edge of the hole 22.

Pour assurer la fonction de guide-fil de l'appendice 107, il est prévu sur sa surface extérieure une rainure à-peu-prés hélicoidale 109 qui débute dans la partie terminale du trou 22 jusqu'au bord final latéral de l'appendice, ceci pour amener le fil jusqu'à la surface du rouleau 20 à proximité de la zone de contact osculatrice entre la piste 14A et le rouleau 20 lui-même.To ensure the function of wire guide of appendix 107, there is provided on its outer surface a roughly helical groove 109 which begins in the end part of the hole 22 to the final lateral edge of the appendix, this to bring the wire to the surface of the roller 20 near the osculating contact area between the track 14A and the roller 20 itself.

La guide du fil est conçue pour l'accompagner dans une projection autour et à distance limitée du rouleau 20 et pour limiter la trajectoire libre de la matière entre le canal 109 et la zone de contact entre la piste 14A et le rouleau 20.The wire guide is designed to accompany it in a projection around and at a limited distance from the roller 20 and to limit the free trajectory of the material between the channel 109 and the contact zone between the track 14A and the roller 20.

La ou les rainures 109 sont inclinées de façon à permettre au fil d'atteindre un point de pinçage plus ou moins haut le long de la ligne de contact, de préférence le plus haut possible.The groove or grooves 109 are inclined so as to allow the wire to reach a pinching point which is more or less high along the contact line, preferably as high as possible.

Le carter 107 est aussi apte à nettoyer la surface du rouleau 20 quand un produit nettoyant est inséré à la surface intérieure du carter.The housing 107 is also able to clean the surface of the roller 20 when a cleaning product is inserted on the interior surface of the housing.

Prévoyant la possibilité de travail du dispositif selon les deux sens de rotation, il est avantageux de prévoir deux rainures 109 à peu près symétriques par rapport à un plan passant par les axes du corps 7 et du rouleau 20, comme représenté clairement dans la figure 4. De cette façon, le travail est possible dans les deux sens de rotation du dispositif.Providing for the possibility of working the device in both directions of rotation, it is advantageous to provide two grooves 109 which are roughly symmetrical with respect to a plane passing through the axes of the body 7 and of the roller 20, as shown clearly in FIG. 4 In this way, work is possible in both directions of rotation of the device.

Dans la solution illustrée dans les figures 1 à 4, l'appendice 107 qui forme carter guide-fil entourant partiellement la surface du rouleau 20, est réalisée d'une pièce avec le corps 7.In the solution illustrated in FIGS. 1 to 4, the appendix 107 which forms the wire guide casing partially surrounding the surface of the roller 20, is produced in one piece with the body 7.

Dans la variante de réalisation montrée dans la figure 5 - où les organes correspondants sont indiqués avec les mêmes numéros de référence augmentés de"200"- le corps 207 (avec trou traversant 222, 222A) comporte à sa base un élément séparé, appliqué au moyen de vis ou similaires.In the embodiment shown in Figure 5 - where the corresponding members are indicated with the same reference numbers increased by "200" - the body 207 (with through hole 222, 222A) has at its base a separate element, applied to the by means of screws or the like.

Cet élément présente une bride discoide 301 pour l'application au corps 207 et forme un appendice 307 analogue à celui 7 pour constituer un carter guide-fil avec fonction analogue.This element has a discoid flange 301 for application to the body 207 and forms an appendage 307 similar to that 7 to form a wire guide housing with similar function.

Dans la figure 5 est aussi représenté, d'une manière limitée, un différent solution de montage des rotors avec roulements à billes, qui ont étés développés ainsi comme montré en 205 et 210 en tant que pistes de roulement doubles pour les deux couronnes de billes respectives.In FIG. 5 is also shown, in a limited manner, a different mounting solution for the rotors with ball bearings, which have been developed as shown in 205 and 210 as double raceways for the two crowns of balls respective.

Le montage du rouleau 220 est aussi légèrement modifié par rapport à la solution des figures 1 à 4, mais avec fonction parfaitement équivalente.The mounting of the roller 220 is also slightly modified compared to the solution of FIGS. 1 to 4, but with perfectly equivalent function.

Avec la disposition décrite, il est possible d'obtenir de nombreux et évidents avantages.With the arrangement described, it is possible to obtain numerous and obvious advantages.

Il est à remarquer que le rouleau 20 ou 220 est monté d'une façon rigide avec entr'axe fixe par rapport à l'axe principale du dispositif et des rotors 7 et 12 et en particulier du rotor 7, sur lequel il est monté, avec fixation par vis ou système à expansion pour permettre facilement le montage et démontage.It should be noted that the roller 20 or 220 is rigidly mounted with a fixed center distance relative to the main axis of the device and of the rotors 7 and 12 and in particular of the rotor 7, on which it is mounted, with screw fixing or expansion system to allow easy assembly and disassembly.

La piste circulaire 14 ou 214 est séparée et supportée élastiquement par une couronne 16 ou 216 en caoutchouc ou matière similaire.The circular track 14 or 214 is separated and resiliently supported by a crown 16 or 216 of rubber or similar material.

Cette couronne est collée ou vulcanisée soit sur une seule face intérieure ou extérieure, soit sur les deux faces, soit simplement retenue par des épaulements comme illustré au dessin.This crown is glued or vulcanized either on a single interior or exterior face, or on both sides, or simply retained by shoulders as illustrated in the drawing.

Quel que soit le genre de montage, tout le groupe piste, couronne élastique et anneaux de support et élastiques peut être appliqué au dispositif avec facilité de montage, démontage et entretien,ou bien la piste et relative couronne élastique peuvent être directement appliquées sur le siège approprié, réalisé sur le rotor 12 ou 212, avec des solutions permettant un remplacement aisé.Whatever the type of mounting, the whole track, elastic ring and support and elastic rings group can be applied to the device with ease of assembly, disassembly and maintenance, or the track and relative elastic ring can be directly applied to the seat. suitable, made on rotor 12 or 212, with solutions allowing easy replacement.

La piste ainsi réalisée permet en outre :
(1) des oscillations dans tous les sens; (2) un alignement automatique et contact parfait avec le rouleau bien que monté de façon rigide; (3) une adaptation aux différents numéros de taux, c'est à dire épaisseur du fil au travail; (4)le passage d'eventuels épaississements du fil dû par exemple à des raccords ou rattaches de matière; (5) l'utilisation d'une surface élevée de la couronne élastique garantissant une durée de vie illimitée; (6) l'utilisation d'une qualité de caoutchouc très élastique; (7) un e épaisseur appropriée sans limitation de forme, de dimension et de morphologie; (8) une interference optimale de pression entre piste et rouleau; (9) une usure négligeable dans le temps, le caoutchouc n'étant en contact ni avec le fil ni avec le rouleau.The track thus produced also allows:
(1) oscillations in all directions; (2) automatic alignment and perfect contact with the roller although rigidly mounted; (3) adaptation to different rate numbers, ie thickness of the wire at work; (4) the passage of any thickening of the wire due for example to fittings or reattachments of material; (5) the use of a high surface area of the elastic crown guaranteeing an unlimited service life; (6) the use of a very elastic quality of rubber; (7) an appropriate thickness without limitation of shape, size and morphology; (8) optimal pressure interference between track and roller; (9) negligible wear over time, the rubber being in contact neither with the wire nor with the roller.

La présence de l'appendice 107 ou 307 faisant fonction de carter guide-fil: évite des enroulements possibles du fil sur le rouleau; fait fonction de nettoyeur du rouleau avec l'éventuelle application d'une couche de feutre ou similaire; permet de guider le fil mèche (au moyen des rainures hélicoidales 109 ou semblables), même avec possibilité de rotations dans les deux sens et avec accompagnement de la matière vers le point de pinçage entre la piste et le rouleau.The presence of appendix 107 or 307 acting as a wire guide casing: avoids possible windings of the wire on the roller; acts as a roller cleaner with the possible application of a layer of felt or the like; allows the wicking wire to be guided (by means of helical grooves 109 or the like), even with the possibility of rotations in both directions and with support of the material towards the pinching point between the track and the roller.

C'est entendu que le dessin ne montre que des exemples donnés seulement à titre de démonstration pratique de l'invention, la quelle peut varier dans les formes et dispositions sans pour autant sortir du concept qu'inspire l'invention elle-même.It is understood that the drawing shows only examples given only as a practical demonstration of the invention, which may vary in the forms and arrangements without departing from the concept inspired by the invention itself.

L'éventuelle présence de numéros de référence dans les revendications ci-jointes a pour but de faciliter la lecture des revendications en se référant à la description et au dessin et ne limite pas l'étendue de la protection réprésentée par ces revendications.The possible presence of reference numbers in the appended claims is intended to facilitate the reading of the claims with reference to the description and the drawing and does not limit the scope of the protection represented by these claims.

Claims (8)

1) Dispositif d'étirage et de fausse torsion simultanée pour la production de fil en général et de filés cardés en particulier, caractérisé du fait qu'il comprend en combinaison : deux rotors (7, 12) coaxiaux et indépendants tournants à vitesses différentes; sur un premier rotor (7) présence d'un trou travesant (22) et d'un rouleau ou petit cylindre (20) monté pour tourner librement autour d'un pivot (18) à axe fixe parallèle et décentré par rapport à l'axe commun des deux rotors (7, 12); sur l'autre rotor (12) présence d'une piste circulaire intérieure (14) rigide, montée sur cet autre rotor (12) avec l'interposition d'une composante (16) élastique de souplesse élevée pour permettre le contact correct entre la piste et le petit cylindre. 1) Device for simultaneous stretching and false twisting for the production of wire in general and carded yarns in particular, characterized in that it comprises in combination: two coaxial and independent rotors (7, 12) rotating at different speeds; on a first rotor (7) presence of a transverse hole (22) and a roller or small cylinder (20) mounted to rotate freely around a pivot (18) with a fixed axis parallel and off-center with respect to the common axis of the two rotors (7, 12); on the other rotor (12) presence of a rigid inner circular track (14), mounted on this other rotor (12) with the interposition of an elastic component (16) of high flexibility to allow correct contact between the track and the small cylinder. 2) Dispositif comme de revendication 1, caractérisé du fait que au premier rotor (7; 207) est solidaire un appendice (107; 307) profilé pour entourer partiellement le rouleau ou petit cylindre, et faisant fonction de carter pour guider le fil en formation et afin de pourvoir au nettoyage du petit cylindre. 2) Device as in claim 1, characterized in that the first rotor (7; 207) is integral with an appendage (107; 307) profiled to partially surround the roller or small cylinder, and acting as a casing to guide the wire in formation and to provide for cleaning of the small cylinder. 3) Dispositif comme de revendication 2, caractérisé du fait que sur la surface extérieure de l'appendice (107; 307) est prévue au moins une rainure plus ou moins hélïcoidale (109) faisant fonction de guide-fil. 3) Device as in claim 2, characterized in that on the outer surface of the appendage (107; 307) there is provided at least one more or less helical groove (109) acting as a wire guide. 4) Dispositif comme de revendication 2 ou 3, caractérisé du fait que l'appendice profilé (107; 307) est extérieurement plus ou moins tangent au bord terminal du trou (22, 222) traversant le premier rotor (7, 207). 4) Device as in claim 2 or 3, characterized in that the profiled appendage (107; 307) is externally more or less tangent to the terminal edge of the hole (22, 222) passing through the first rotor (7, 207). 5) Dispositif comme de revendication 2 ou 3 ou 4, caractérisé du fait que l'appendice profilé (107, 307) est symétrique et peut présenter deux rainures symètrique (109) faisant fonction de guide-fil. 5) Device as in claim 2 or 3 or 4, characterized in that the profiled appendage (107, 307) is symmetrical and can have two symmetrical grooves (109) acting as a wire guide. 6) Dispositif comme au moins de revendication 1, caractérisé du fait que la composante élastique (16, 216) est une épaisseur en caoutchouc ou matière équivalente. 6) Device as at least of claim 1, characterized in that the elastic component (16, 216) is a thickness of rubber or equivalent material. 7) Dispositif comme au moins de revendication 1 ou 6, caractérisé du fait que la composante élastique (16, 216) est aisément démontable avec la piste (14, 214). 7) Device as at least of claim 1 or 6, characterized in that the elastic component (16, 216) is easily removable with the track (14, 214). 8)Dispositif perfectionné pour l'étirage avec fausse torsion simultanée de fibres textiles en forme de mèches destinées à la filature; le tout comme ci-dessus décrit et représenté à titre d'exemple dans le dessin en annexe. 8) Improved device for drawing with simultaneous false twist of textile fibers in the form of wicks intended for spinning; the whole as above described and shown by way of example in the attached drawing.
EP94830115A 1993-03-19 1994-03-17 Apparatus for drawing, by falsetwisting, textile fibre tows intended for spinning Withdrawn EP0616060A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI930052A IT1262043B (en) 1993-03-19 1993-03-19 IMPROVED DEVICE FOR IRONING WITH FALSE TORSION OF A WOVEN INTENDED FOR SPINNING.
ITFI930052 1993-03-19

Publications (1)

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EP0616060A1 true EP0616060A1 (en) 1994-09-21

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EP94830115A Withdrawn EP0616060A1 (en) 1993-03-19 1994-03-17 Apparatus for drawing, by falsetwisting, textile fibre tows intended for spinning

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IT (1) IT1262043B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1114003B (en) * 1953-07-14 1961-09-21 Onderzoekings Inst Res False twisting device for the production of crimped, elastic threads or yarns from thermoplastic polymerisation or polycondensation products
GB1001454A (en) * 1961-09-12 1965-08-18 Onderzoekings Inst Res Improvements in or relating to the false-twisting of a running yarn
GB1101713A (en) * 1964-01-25 1968-01-31 Scragg & Sons Driving yarn false twist spindles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1114003B (en) * 1953-07-14 1961-09-21 Onderzoekings Inst Res False twisting device for the production of crimped, elastic threads or yarns from thermoplastic polymerisation or polycondensation products
GB1001454A (en) * 1961-09-12 1965-08-18 Onderzoekings Inst Res Improvements in or relating to the false-twisting of a running yarn
GB1101713A (en) * 1964-01-25 1968-01-31 Scragg & Sons Driving yarn false twist spindles

Also Published As

Publication number Publication date
ITFI930052A0 (en) 1993-03-19
IT1262043B (en) 1996-06-18
ITFI930052A1 (en) 1994-09-19

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