EP0305305A1 - Device for imparting a false-twist by friction to at least one advancing yarn - Google Patents
Device for imparting a false-twist by friction to at least one advancing yarn Download PDFInfo
- Publication number
- EP0305305A1 EP0305305A1 EP88420289A EP88420289A EP0305305A1 EP 0305305 A1 EP0305305 A1 EP 0305305A1 EP 88420289 A EP88420289 A EP 88420289A EP 88420289 A EP88420289 A EP 88420289A EP 0305305 A1 EP0305305 A1 EP 0305305A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- belts
- rollers
- support
- belt
- housing
- 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.)
- Granted
Links
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
- D02G1/04—Devices for imparting false twist
- D02G1/08—Rollers or other friction causing elements
- D02G1/085—Rollers or other friction causing elements between crossed belts
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/11—Spinning by false-twisting
Definitions
- the present invention relates to an improved device for communicating a false torsion by friction to at least one moving wire.
- This technique consists, in general, of putting the moving wire in contact with a mobile surface, moving transversely with respect to said wire, so that it is twisted upstream and regains its initial twist in downstream.
- spindles must be able to allow easy positioning of the wire during start-up, offer the possibility of adjusting the running speed of the belts and allow easy change of said belts when they are worn.
- rollers having a relatively large diameter rollers which are always of equal diameters, which has the consequence of increasing the size of such pins and especially d 'remove the torsion member of the means which deliver the material (wire or fiber) to be treated.
- the invention therefore relates to an improvement made to spindles with crossed belts making it possible to communicate a false torsion by friction to a fibrous material (continuous threads, strands of staple fibers, etc.), spindles of the type comprising two belts without thin, inclined with respect to each other, mounted on two pairs of rollers (or rollers), having two strands in mutual contact, the fibrous material passing between these belts in the area where they are in contact, so that on the one hand, they impart a false twist to it and on the other hand, they tend to deliver the wire formed, said pin comprising in combination: - Means for changing the inclination of two belts relative to each other; - Means for adjusting the pressure (or spacing) of the belts against each other; means for rotating the belt support rollers as well as for engaging and disengaging them, characterized in that: - the support rollers supporting the two belts are mounted on the spindle proper housing by means of two pairs of support arms (one for each roller), one of the support arms
- the two support rollers of each belt have different diameters, the one located furthest forward relative to the spindle housing being significantly smaller, the surfaces of said rollers and the belts they support comprising, one at least one continuous grooving , the other at least one part in complementary relief thus ensuring a rigorous positioning of the belts in space despite the lack of parallelism of the axes that can result from such a simplified design, regardless of the angle of the straps and therefore the effort exerted on it and which tends to drive them out of the pebbles; - the drive rollers of each pair are driven by an endless belt common to the two rollers.
- the device according to the invention is associated on the one hand with means making it possible to deliver at least one fibrous material between the two belts as well as means making it possible to draw up and return the wire thus treated.
- any known means allowing: - Either to treat the wire thermally upstream and / or downstream of the device, for example when it is desired to make a textured wire, a retracted wire ..; - Or to vary the flow rate of the wire and / or the length of the twist rise upstream of said device when it is desired to obtain a wire having alternating tension; - Either allow the delivery of one or more strands of parallelized fibers to which one wishes to communicate cohesion.
- such a device can be used both to treat yarns with continuous filaments as yarns of fibers, or even wicks alone or in combination with other textile elements.
- the spindle with crossed belts is of the type comprising two endless belts (1,2), mounted on two pairs of rollers (3,4,5,6) , arranged face to face and inclined with respect to each other so that, in normal operation, when the fibrous material (7) (wicks, continuous filaments, combination of such elements, etc.) passes between these belts in the area where they are in contact and they give it a false twist and tend to deliver it.
- fibrous material (7) wicks, continuous filaments, combination of such elements, etc.
- the belts (1,2) are mounted on a housing (8) fixed to the housing of the machine in the following manner.
- each roller (3,4,5,6) is individually mounted at the end of a support arm respectively (9,10,11,12), the support arm (12) of the roller (6) not being visible in Figure 1.
- These arms are designed in one piece and are mounted on the housing (1) so that they can possibly be changed.
- the ends of the arms on which the support rollers are mounted are inclined in order to obtain the desired angle between the two belts. It is therefore sufficient, in order to modify this inclination, to provide support arms comprising ends which are inclined in a different manner.
- one of the arms in this case the arm (12) for the lower belt and the arm (10) for the upper belt is subjected to the action of means making it possible to modify the tension of each of the belts.
- This is obtained in the illustrated embodiment, by mounting each arm (10,12) pivoting about an axis (14), the body of the arm itself being directly subjected to the action of springs (15, 16) (only the spring (15) being illustrated in Figure 1). In this way, a simple articulation is produced.
- the parallelism between the axes of the rollers supporting the belts may not be respected, but it is however possible to obtain perfect positioning and maintenance of the belts on said rollers thanks to the preferred embodiment in accordance with the invention which will be seen in the following description and in which the surface of said rollers and that of the belts comprises raised parts and complementary corresponding grooves.
- the lower arm (11) is, for its part, mounted on the housing (8) so as to be able to pivot angularly about an axis (17).
- This pivoting can be controlled by a pneumatic cylinder (19) and therefore makes it possible, not only to secure the locking of the lower belt (2) against the upper belt (1) in normal operation, but also to achieve an automatic separation of the of them belts, for example when stopping the machine, thus avoiding any sticking between them.
- the interlocking between the belts (1) and (2) can be adjusted by means of a stop, fixed and adjustable (not shown in the attached diagrams) and which is interposed between the surface of the arm (11) and the surface of the body. (8) inside which this arm is mounted.
- Such an embodiment therefore makes it possible to disengage the belts (1,2) upon opening and a clutch after starting, which avoids prolonged contact between the belts, the temperature of which is generally relatively high after a long time. operation which can cause them to stick and, consequently, high torques during start-up and deterioration of the surface condition of the belts.
- This therefore also allows adjustment of the intersection of the belts (1,2) by simple displacement of only one of the belt support rollers.
- the latter in order to ensure perfect maintenance of the belts (1,2) on the surface of the rollers, the latter have raised parts (20,21), three in number in this case (see fig. 6 and 7), while the inner surface of each of the belts has corresponding grooves.
- Such grooving of the strips makes it possible to rigorously freeze their position in space despite the lack of parallelism between the axes which may result from the simplicity of such an articulation and this, whatever the angle between the strips and therefore the force exerted on them and which tends to move rollers.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
La présente invention concerne un dispositif perfectionné permettant de communiquer une fausse torsion par friction à au moins un fil en mouvement.The present invention relates to an improved device for communicating a false torsion by friction to at least one moving wire.
La technique qui consiste à communiquer à un fil une fausse torsion par friction est connue depuis fort longtemps. Cette technique consiste, d'une manière générale, à mettre le fil en mouvement en contact avec une surface mobile, se déplaçant transversalement par rapport au travers dudit fil, de telle sorte que celui-ci soit tordu en amont et retrouve sa torsion initiale en aval.The technique of communicating a false twist by friction to a wire has been known for a very long time. This technique consists, in general, of putting the moving wire in contact with a mobile surface, moving transversely with respect to said wire, so that it is twisted upstream and regains its initial twist in downstream.
Cette technique pour laquelle de nombreuses applications ont été envisagées est surtout utilisée à ce jour pour texturer des fils chimiques, c'est-à-dire pour leur communiquer de la voluminosité et de l'élasticité grâce à un traitement thermique suivi d'un refroidissement du fil en amont de l'organe de fausse torsion.This technique for which many applications have been envisaged is mainly used to date for texturing chemical threads, that is to say for imparting bulk and elasticity to them by means of a heat treatment followed by cooling. of the wire upstream of the false twist member.
Diverses autres applications de fausse torsion ont été également envisagées, notamment pour réaliser des fils fantaisie, des fils présentant une torsion alternée sur leur longueur, des fils autotordus, des filés de fibres simples ou complexes, par exemple comportant une âme interne.Various other applications of false twist have also been envisaged, in particular for producing fancy yarns, yarns having alternating twist along their length, self-twisted yarns, yarns of simple or complex fibers, for example comprising an internal core.
Comme surface mobile permettant de communiquer une torsion par friction à un fil, de nombreuses solutions ont été proposées. Celles qui, à ce jour, sont utilisées dans le domaine de la texturation, font appel soit à des douilles contre la surface desquelles le fil est en contact (fausse torsion par friction interne), soit à des disques, montés sur des axes parallèles, se chavauchant les uns les autres, le fil en mouvement venant en contact avec la surface extérieure de cesdits disques (fausse torsion par friction externe).As a mobile surface allowing a friction twist to be communicated to a wire, numerous solutions have been proposed. Those which, to date, are used in the field of texturing, use either bushings against the surface of which the wire is in contact (false twist by internal friction), either to discs, mounted on parallel axes, overlapping each other, the moving wire coming into contact with the external surface of said discs (false torsion by external friction).
Il a été proposé depuis fort longtemps notamment dans les brevets français n° 1 191 361, 1 255,922, et dans le brevet américain n° 2 908 133, d'utiliser comme organe permettant de communiquer la fausse torsion une ou plusieurs courroies sans fin contre la surface de laquelle le fil vient frotter.It has been proposed for a very long time in particular in French patents n ° 1,191,361, 1,255,922, and in American patent n ° 2,908,133, to use as organ for communicating the false twist one or more endless belts against the surface of which the wire rubs.
Il a également été envisagé, ainsi que cela est décrit dans l'US-A-2 362 589 et le FR-A-1 076 599 de communiquer une fausse torsion en faisant passer le fil, qu'il soit à base de filaments continus ou de fibres discontinues, entre deux courroies mobiles, ces courroies étant disposées obliquement l'une par rapport à l'autre, de telle sorte que l'on confère au fil une impulsion dans la direction de son déplacement lors de son passage entre les courroies. L'invention concerne un perfectionnement apporté à ce dernier type de dispositif de fausse torsion.It has also been envisaged, as described in US-A-2 362 589 and FR-A-1 076 599 to communicate a false twist by passing the thread, whether it is based on continuous filaments or of staple fibers, between two movable belts, these belts being arranged obliquely with respect to each other, so that the thread is given an impulse in the direction of its movement during its passage between the belts . The invention relates to an improvement made to the latter type of false twist device.
Dans la suite de la description, un tel dispositif à courroies sera désigné par l'expression "broche à courroies croisées".In the following description, such a belt device will be designated by the expression "spindle with crossed belts".
Parmi les problèmes qui se posent pour de telles broches à courroies croisées et qui sont fonction de la matière traitée, de la vitesse de production, du taux de torsion que l'on désire communiquer, on peut citer celui de l'inclinaison d'une courroie par rapport à l'autre, de la pression desdites courroies l'une contre l'autre, de la tension de chacune des courroies.Among the problems which arise for such crossed belt spindles and which are a function of the material treated, the speed of production, the rate of twist which it is desired to communicate, one can cite that of the inclination of a belt relative to the other, from the pressure of said belts against each other, from the tension of each of the belts.
Par ailleurs, de telles broches doivent pouvoir permettre une mise en place aisée du fil lors de la mise en route, offrir la possibilité d'un réglage de la vitesse de défilement des courroies et permettre un changement aisé desdites courroies lorsqu'elles sont usées.Furthermore, such spindles must be able to allow easy positioning of the wire during start-up, offer the possibility of adjusting the running speed of the belts and allow easy change of said belts when they are worn.
Pris séparément, chacun de ces problèmes peut être résolu sans difficulté par l'homme du métier.Taken separately, each of these problems can be solved without difficulty by those skilled in the art.
En revanche, à ce jour, il n'a pas été proposé de solution permettant de les résoudre simultanément.However, to date, no solution has been proposed to resolve them simultaneously.
De plus, dans tous les dispositifs proposés à ce jour, se pose le problème du maintien en position des courroies autour de leurs galets supports étant donné, qu'en fonctionnement normal, lesdites courroies sous l'action des contraintes exercées par le passage du fil ont tendance à se déplacer transversalement, ce qui perturbe le bon fonctionnement. Actuellement, dans le domaine du textile, pour assurer le maintien de courroies autour des galets d'entraînement, par exemple dans les broches ou voire même dans les délivreurs de fils, les solutions proposées ont consisté soit à prévoir des galets dont la largeur est inférieure à la largeur des courroies, soit à utiliser des galets bombés.In addition, in all the devices proposed to date, the problem arises of maintaining the belts in position around their support rollers, given that, in normal operation, said belts under the action of the stresses exerted by the passage of the wire tend to move transversely, which disrupts proper functioning. Currently, in the textile field, to ensure the maintenance of belts around the drive rollers, for example in the spindles or even in the wire deliverers, the solutions proposed have consisted either of providing rollers whose width is less to the width of the belts, or to use curved rollers.
Enfin, à ce jour, dans de telles courroies croisées il est nécessaire d'avoir des galets ayant un diamètre relativement important, galets qui sont toujours de diamètres égaux, ce qui a pour conséquence d'augmenter l'encombrement de telles broches et surtout d'éloigner l'organe de torsion des moyens qui délivrent la matière (fil ou fibre) à traiter.Finally, to date, in such crossed belts it is necessary to have rollers having a relatively large diameter, rollers which are always of equal diameters, which has the consequence of increasing the size of such pins and especially d 'remove the torsion member of the means which deliver the material (wire or fiber) to be treated.
Or on a trouvé, et c'est ce qui fait l'objet de la présente invention, un perfectionnement à de tels types de broches à courroies croisées, perfectionnement de conception particulièrement simple, facile à utiliser et à entretenir, de faible encombrement, qui non seulement permet d'obtenir aisément les réglages précités (inclinaison des courroies, pression entre elles..), mais également élimine tout risque de glissement des courroies par rapport aux galets support.Now we have found, and this is what is the subject of the present invention, an improvement to such types of spindles with crossed belts, an improvement in design which is particularly simple, easy to use and to maintain, of small size, which not only makes it possible to easily obtain the aforementioned adjustments (inclination of the belts, pressure between them, etc.), but also eliminates any risk of slipping of the belts relative to the support rollers.
D'une manière générale, l'invention concerne donc un perfectionnement apporté aux broches à courroies croisées permettant de communiquer une fausse torsion par friction à une matière fibreuse (fils continus, mèches de fibres discontinues..), broches du type comportant deux courroies sans fins, inclinées l'une par rapport à l'autre, montées sur deux paires de rouleaux (ou galets), ayant deux brins en contact mutuel, la matière fibreuse passant entre ces courroies dans la zone où elles sont en contact, de telle sorte que d'une part, elles lui communiquent une fausse torsion et d'autre part, elles aient tendance à délivrer le fil formé, ladite broche comportant en combinaison :
- des moyens permettant de modifier l'inclinaison de deux courroies l'une par rapport à l'autre ;
- des moyens permettant de régler la pression (ou l'écartement) des courroies l'une contre l'autre ;
- des moyens permettant d'entraîner en rotation les galets supports des courroies ainsi que de les embrayer et de les débrayer,
caractérisée en ce que :
- les galets supports supportant les deux courroies sont montés sur le boitier proprement dit de la broche par l'intermédiaire de deux paires de bras supports (un pour chaque galet), l'un des bras support de chaque paire étant soumis à l'action de moyens de pression permettant d'assurer la tension de chaque courroie, au moins l'un des deux autres bras supports étant monté articulé sur le boitier, le parallélisme entre les axes desdits galets pouvant n'être pas respecté.In general, the invention therefore relates to an improvement made to spindles with crossed belts making it possible to communicate a false torsion by friction to a fibrous material (continuous threads, strands of staple fibers, etc.), spindles of the type comprising two belts without thin, inclined with respect to each other, mounted on two pairs of rollers (or rollers), having two strands in mutual contact, the fibrous material passing between these belts in the area where they are in contact, so that on the one hand, they impart a false twist to it and on the other hand, they tend to deliver the wire formed, said pin comprising in combination:
- Means for changing the inclination of two belts relative to each other;
- Means for adjusting the pressure (or spacing) of the belts against each other;
means for rotating the belt support rollers as well as for engaging and disengaging them,
characterized in that:
- the support rollers supporting the two belts are mounted on the spindle proper housing by means of two pairs of support arms (one for each roller), one of the support arms of each pair being subjected to the action pressure means for ensuring the tension of each belt, at least one of the other two support arms being hinged on the housing, the parallelism between the axes of said rollers may not be respected.
De préférence, conformément à l'invention :
- les deux galets supports de chaque courroie ont des diamètres différents, celui situé le plus en avant par rapport au boitier de broche étant nettement inférieur, les surfaces desdits galets et des courroies qu'ils supportent comportant, l'une au moins un rainurage continu, l'autre au moins une partie en relief complémentaire permettant ainsi d'assurer un positionnement rigoureux des courroies dans l'espace malgré le défaut de parallélisme des axes que peut entraîner une telle conception simplifiée et ce, quelque soit l'angle des lanières et donc l'effort s'exerçant sur elle et qui tend à les chasser des galets ;
- l'entraînement des galets moteurs de chaque paire est obtenu au moyen d'une courroie sans fin commune aux deux galets.Preferably, in accordance with the invention:
- The two support rollers of each belt have different diameters, the one located furthest forward relative to the spindle housing being significantly smaller, the surfaces of said rollers and the belts they support comprising, one at least one continuous grooving , the other at least one part in complementary relief thus ensuring a rigorous positioning of the belts in space despite the lack of parallelism of the axes that can result from such a simplified design, regardless of the angle of the straps and therefore the effort exerted on it and which tends to drive them out of the pebbles;
- the drive rollers of each pair are driven by an endless belt common to the two rollers.
De manière connue, le dispositif conforme à l'invention est associé d'une part à des moyens permettant de délivrer au moins une matière fibreuse entre les deux courroies ainsi qu'à des moyens permettant d'appeler et de renvider le fil ainsi traité.In known manner, the device according to the invention is associated on the one hand with means making it possible to deliver at least one fibrous material between the two belts as well as means making it possible to draw up and return the wire thus treated.
Par ailleurs, il peut être associé à tout moyen connu permettant :
- soit de traiter le fil thermiquement en amont et/ou en aval du dispositif, par exemple lorsque l'on désire réaliser un fil texturé, un fil rétracté.. ;
- soit de faire varier le débit du fil et/ou la longueur de remontée de torsion en amont dudit dispositif lorsque l'on désire obtenir un fil présentant une tension alternée ;
- soit permettre de délivrer une ou plusieurs mèches de fibres parallélisées auxquelles on désire communiquer de la cohésion.Furthermore, it can be combined with any known means allowing:
- Either to treat the wire thermally upstream and / or downstream of the device, for example when it is desired to make a textured wire, a retracted wire ..;
- Or to vary the flow rate of the wire and / or the length of the twist rise upstream of said device when it is desired to obtain a wire having alternating tension;
- Either allow the delivery of one or more strands of parallelized fibers to which one wishes to communicate cohesion.
En d'autres termes, un tel dispositif peut être utilisé aussi bien pour traiter des fils à filaments continus que des filés de fibres, voire même des mèches seules ou en association avec d'autres éléments textiles.In other words, such a device can be used both to treat yarns with continuous filaments as yarns of fibers, or even wicks alone or in combination with other textile elements.
La manière dont est réalisé le dispositif conforme à l'invention ressortira cependant mieux de l'exemple de réalisation donné ci-après à titre indicatif mais non limitatif et qui est illustré par les schémas annexés dans lesquels :
- - la figure 1 est une vue schématique en perspective montrant l'ensemble d'une broche à courroies croisées conforme à l'invention ;
- - les figures 2 et 3 ainsi que les figures 4 et 5 montrent schématiquement, vues de dessus, dans le cas d'une broche dans laquelle le défilement du fil se fait horizontalement comme illustré à la figure 1, la manière dont sont montés sur le boitier, d'une part les galets supports de la courroie inférieure (figures 2 et 3) et, d'autre part, les galets supports de la courroie supérieure (figures 4 et 5) ;
- - les figures 6 et 7 sont des coupes montrant la structure des galets supports d'une courroie.
- - Figure 1 is a schematic perspective view showing the assembly of a spindle with crossed belts according to the invention;
- - Figures 2 and 3 as well as Figures 4 and 5 schematically show, seen from above, in the case of a spindle in which the thread travel is made horizontally as illustrated in Figure 1, the manner in which are mounted on the housing, on the one hand the support rollers of the lower belt (Figures 2 and 3) and, on the other hand, the support rollers of the upper belt (Figures 4 and 5);
- - Figures 6 and 7 are sections showing the structure of the support rollers of a belt.
Dans la suite de la description, l'invention sera décrite pour une broche dans laquelle la matière textile (désignée par l'expression "fil" mais qui pourrait être constitué de fibres), défile horizontalement mais il est évident que cela n'est pas limitatif et qu'une telle matière pourrait défiler verticalement ou en formant tout autre angle. Compte-tenu de cette disposition, les termes "inférieur" et "supérieur" seront utilisés pour différencier les différents éléments d'une telle broche.In the following description, the invention will be described for a spindle in which the textile material (designated by the expression "thread" but which could consist of fibers), runs horizontally but it is obvious that this is not limiting and that such a material could scroll vertically or at any other angle. In view of this provision, the terms "lower" and "upper" will be used to differentiate the different elements of such a pin.
Si l'on se reporte à la figure 1, la broche à courroies croisées conforme à l'invention est du type comportant deux courroies sans fin (1,2), montées sur deux paires de rouleaux (3,4,5,6), disposés face à face et inclinées l'une par rapport à l'autre de telle sorte, qu'en fonctionnement normal, lorsque la matière fibreuse (7) (mèches,filaments continus, combinaison de tels éléments..) passe entre ces courroies dans la zone où elles sont en contact et elles lui communiquent une fausse torsion et tendent à la délivrer.Referring to Figure 1, the spindle with crossed belts according to the invention is of the type comprising two endless belts (1,2), mounted on two pairs of rollers (3,4,5,6) , arranged face to face and inclined with respect to each other so that, in normal operation, when the fibrous material (7) (wicks, continuous filaments, combination of such elements, etc.) passes between these belts in the area where they are in contact and they give it a false twist and tend to deliver it.
Conformément à l'invention, les courroies (1,2) sont montées sur un boitier (8) fixé au boitier de la machine de la manière suivante.According to the invention, the belts (1,2) are mounted on a housing (8) fixed to the housing of the machine in the following manner.
Tout d'abord, chaque galet (3,4,5,6) est monté individuellement à l'extrémité d'un bras support respectivement (9,10,11,12), le bras support (12) du galet (6) n'étant pas visible à la figure 1. Ces bras sont conçus en une seule pièce et sont montés sur le boitier (1) de manière à pouvoir éventuellement être changés. Ainsi que cela ressort des figures 2 à 5, les extrémités des bras sur lesquels sont montés les galets supports sont inclinés afin d'obtenir l'angle souhaité entre les deux courroies. Il suffit donc, pour modifier cette inclinaison, de prévoir des bras supports comportant des extrémités inclinées de manière différente.First, each roller (3,4,5,6) is individually mounted at the end of a support arm respectively (9,10,11,12), the support arm (12) of the roller (6) not being visible in Figure 1. These arms are designed in one piece and are mounted on the housing (1) so that they can possibly be changed. As shown in Figures 2 to 5, the ends of the arms on which the support rollers are mounted are inclined in order to obtain the desired angle between the two belts. It is therefore sufficient, in order to modify this inclination, to provide support arms comprising ends which are inclined in a different manner.
Pour chaque courroie (1,2), l'un des bras, dans le cas présent le bras (12) pour la courroie inférieure et le bras (10) pour la courroie supérieure est soumis à l'action de moyens permettant de modifier la tension de chacune des courroies. Cela est obtenu dans le mode de réalisation illustré, en montant chaque bras (10,12) pivotant autour d'un axe (14), le corps du bras étant lui-même soumis directement à l'action de ressorts (15, 16) (seul le ressort (15) étant illustré à la figure 1). De cette manière, on réalise une articulation simple. Certes, dans une telle conception, le parallélisme entre les axes des galets supportant les courroies peut ne pas être respecté, mais il est cependant possible d'obtenir un positionnement et maintien parfait des courroies sur lesdits galets grace à la forme de réalisation préférentielle conforme à l'invention qui sera vue dans la suite de la description et dans laquelle la surface desdits galets et celle des courroies comporte des parties en relief et des rainurages correspondants complémentaires.For each belt (1,2), one of the arms, in this case the arm (12) for the lower belt and the arm (10) for the upper belt is subjected to the action of means making it possible to modify the tension of each of the belts. This is obtained in the illustrated embodiment, by mounting each arm (10,12) pivoting about an axis (14), the body of the arm itself being directly subjected to the action of springs (15, 16) (only the spring (15) being illustrated in Figure 1). In this way, a simple articulation is produced. Admittedly, in such a design, the parallelism between the axes of the rollers supporting the belts may not be respected, but it is however possible to obtain perfect positioning and maintenance of the belts on said rollers thanks to the preferred embodiment in accordance with the invention which will be seen in the following description and in which the surface of said rollers and that of the belts comprises raised parts and complementary corresponding grooves.
Par ailleurs, afin de pouvoir régler la pression des deux courroies l'une contre l'autre, le bras inférieur (11) est, quant à lui, monté sur le boitier (8) de manière à pouvoir pivoter angulairement autour d'un axe (17). Ce pivotement peut être commandé par un vérin pneumatique (19) et permet donc, non seulement d'assurer l'embarrage de la courroie inférieure (2) contre la courroie supérieure (1) en fonctionnement normal, mais également de réaliser un écartement automatique des deux courroies, par exemple lors de l'arrêt de la machine, évitant ainsi tout collage entre elles. L'embarrage entre les courroies (1) et (2) peut être réglé au moyen d'une butée, fixe et réglable (non représentée aux schémas annexés) et qui est interposée entre la surface du bras (11) et la surface du corps (8) à l'intérieur duquel est monté ce bras.Furthermore, in order to be able to adjust the pressure of the two belts against each other, the lower arm (11) is, for its part, mounted on the housing (8) so as to be able to pivot angularly about an axis (17). This pivoting can be controlled by a pneumatic cylinder (19) and therefore makes it possible, not only to secure the locking of the lower belt (2) against the upper belt (1) in normal operation, but also to achieve an automatic separation of the of them belts, for example when stopping the machine, thus avoiding any sticking between them. The interlocking between the belts (1) and (2) can be adjusted by means of a stop, fixed and adjustable (not shown in the attached diagrams) and which is interposed between the surface of the arm (11) and the surface of the body. (8) inside which this arm is mounted.
Un tel mode de réalisation permet donc de réaliser un débrayage des courroies (1,2) dès l'ouverture et un embrayage après mise en route, ce qui évite un contact prolongé entre les courroies dont la température est en général relativement élevée après un long fonctionnement ce qui peut provoquer leur collage et, en conséquence, des couples élevés lors du démarrage et la détérioration de l'état de surface des courroies. Cela permet donc également un réglage de l'intersection des courroies (1,2) par simple déplacement d'un seul des galets supports de courroies.Such an embodiment therefore makes it possible to disengage the belts (1,2) upon opening and a clutch after starting, which avoids prolonged contact between the belts, the temperature of which is generally relatively high after a long time. operation which can cause them to stick and, consequently, high torques during start-up and deterioration of the surface condition of the belts. This therefore also allows adjustment of the intersection of the belts (1,2) by simple displacement of only one of the belt support rollers.
Selon l'exemple de réalisation illustré, le bras supérieur (8,9) qui supporte le galet (3) est, quant à lui fixe.According to the illustrated embodiment, the upper arm (8,9) which supports the roller (3) is, in turn fixed.
Par ailleurs, conformément à l'invention, afin d'assurer un maintien parfait des courroies (1,2) à la surface des galets, ces derniers comportent des parties en relief (20,21), au nombre de trois dans le cas présent (voir fig. 6 et 7), alors que la surface intérieure de chacune des courroies comporte, quant à elle, des rainurages correspondants. Un tel rainurage des lanières permet de figer rigoureusement leur position dans l'espace malgrè le défaut de parallélisme entre les axes pouvant résulter de la simplicité d'une telle articulation et ce, quelque soit l'angle entre les lanières et donc l'effort s'éxerçant sur elles et qui a tendance à déplacer des galets.Furthermore, in accordance with the invention, in order to ensure perfect maintenance of the belts (1,2) on the surface of the rollers, the latter have raised parts (20,21), three in number in this case (see fig. 6 and 7), while the inner surface of each of the belts has corresponding grooves. Such grooving of the strips makes it possible to rigorously freeze their position in space despite the lack of parallelism between the axes which may result from the simplicity of such an articulation and this, whatever the angle between the strips and therefore the force exerted on them and which tends to move rollers.
Enfin, dans l'exemple de réalisation illustré, il est possible d'obtenir une broche très compacte en réalisant les galets situés le plus en avant par rapport au boitier (8) dans un diamètre nettement inférieur aux galets moteurs proprement dits (3,5), ces derniers étant entraînés par une courroie motrice continue unique (22) qui entoure chaque galet (3,5) en passant à l'intérieur d'une gorge (23,24), la commande de cette courroie motrice (22) étant obtenue par une poulie (25) elle-même entraînée par un moteur approprié (26). Ces éléments de commande sont simplement schématisés en traits mixtes à la figure 1.Finally, in the illustrated embodiment, it is possible to obtain a very compact spindle by making the rollers located furthest forward relative to the housing (8) in a diameter much smaller than the motor rollers themselves (3.5 ), the latter being driven by a single continuous drive belt (22) which surrounds each roller (3,5) passing inside a groove (23,24), the control of this drive belt (22) being obtained by a pulley (25) itself driven by a suitable motor (26). These control elements are simply shown in dashed lines in FIG. 1.
Grâce à une telle conception de broche, il est possible d'obtenir un ensemble parfaitement compact, assurant un fonctionnement très régulier de position à position, facile d'entretien et de réglage.Thanks to such a spindle design, it is possible to obtain a perfectly compact assembly, ensuring very regular operation from position to position, easy to maintain and to adjust.
Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation décrit précédemment mais elle en couvre toutes les variantes réalisées dans le même esprit. Ainsi, il est évident que l'on ne sort pas du cadre de l'invention en réalisant des galets supports pour chacune des courroies ayant des diamètres égaux.Of course, the invention is not limited to the embodiment described above, but it covers all the variants produced in the same spirit. Thus, it is obvious that it is not departing from the scope of the invention by producing support rollers for each of the belts having equal diameters.
Claims (3)
- des moyens permettant de modifier l'inclinaison de deux courroies (1,2) l'une par rapport à l'autre ;
- des moyens permettant de régler la pression (ou l'écartement) des courroies l'une contre l'autre ;
- des moyens permettant d'entraîner en rotation les galets supports des courroies (1,2) ainsi que de les embrayer et de les débrayer,
caractérisée en ce que :
- les galets supports (3,4, 5,6), supportant les deux courroies (1,2) sont montés sur le boitier (8) proprement dit de la broche par l'intermédiaire de deux paires de bras supports (9,10,11,12), l'un des bras support (10,12) de chaque paire étant soumis à l'action de moyens de pression permettant d'assurer la tension de chaque courroie (1,2), au moins l'un des deux autres bras supports (9,11) étant monté articulé sur le boitier (8), le parallélisme entre les axes desdits galets pouvant n'être pas respecté.1 / Device for communicating a false torsion by friction to a fibrous material of the type comprising two endless belts (1,2), inclined with respect to each other, mounted on two pairs of rollers (3,4, 5,6), having two strands in mutual contact, the fibrous material (7) passing between these belts in the zone where they are in contact, so that, on the one hand, they impart to it a false twist and on the other hand, they tend to deliver the wire formed, said pin comprising in combination:
- Means for changing the inclination of two belts (1,2) relative to each other;
- Means for adjusting the pressure (or spacing) of the belts against each other;
means making it possible to rotate the support rollers of the belts (1,2) as well as to engage and disengage them,
characterized in that:
- the support rollers (3,4, 5,6), supporting the two belts (1,2) are mounted on the housing (8) proper of the spindle by means of two pairs of support arms (9,10 , 11,12), one of the support arms (10,12) of each pair being subjected to the action of pressure means making it possible to ensure the tension of each belt (1,2), at least one two other support arms (9,11) being hinged on the housing (8), the parallelism between the axes of said rollers may not be respected.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8712175 | 1987-08-28 | ||
| FR8712175A FR2619831B1 (en) | 1987-08-28 | 1987-08-28 | DEVICE FOR COMMUNICATING FALSE FRICTION TORSION TO AT LEAST ONE MOVING WIRE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0305305A1 true EP0305305A1 (en) | 1989-03-01 |
| EP0305305B1 EP0305305B1 (en) | 1991-05-15 |
Family
ID=9354560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88420289A Expired - Lifetime EP0305305B1 (en) | 1987-08-28 | 1988-08-25 | Device for imparting a false-twist by friction to at least one advancing yarn |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4910953A (en) |
| EP (1) | EP0305305B1 (en) |
| JP (1) | JPS6468532A (en) |
| DE (1) | DE3862830D1 (en) |
| FR (1) | FR2619831B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107572314A (en) * | 2017-09-30 | 2018-01-12 | 宁波源生针织有限公司 | The yarn guide of adjustable tension |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2650307B1 (en) * | 1989-07-27 | 1991-10-04 | Devtex | WIRE TRANSFORMING MACHINE WITH A MEMBER ARRANGED BETWEEN TWO SUPPLIERS AND ALLOWING THE AUTOMATIC FEEDING OF THE WIRE DURING THE RELAUNCH |
| JPH0796730B2 (en) * | 1992-08-31 | 1995-10-18 | 村田機械株式会社 | False twisting device |
| US20100024376A1 (en) * | 2008-08-04 | 2010-02-04 | The Hong Kong Polytechnic University | Method and apparatus for manufacturing slalom false twisting on ring yarn |
| JP6914664B2 (en) * | 2017-02-08 | 2021-08-04 | Ｔｍｔマシナリー株式会社 | False twisting machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1051587A (en) * | 1900-01-01 | |||
| FR2374443A1 (en) * | 1976-12-14 | 1978-07-13 | Murata Machinery Ltd | DEVICE FOR ADJUSTING THE PRESSURE FOR PINCHING BELTS IN A MISCELLANEOUS DEVICE |
| FR2484471A1 (en) * | 1980-06-14 | 1981-12-18 | Barmag Barmer Maschf | FALSE FRICTION TORSION DEVICE |
| FR2493882A1 (en) * | 1980-11-07 | 1982-05-14 | Murata Machinery Ltd | BELT-TYPE FALSE TORSION DEVICE |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR756324A (en) * | 1933-05-31 | 1933-12-07 | Barmag Barmer Maschf | Control for spinning centrifuges in artificial silk spinners |
| US2262589A (en) * | 1939-06-07 | 1941-11-11 | Frank M Peck | Textile manufacture |
| FR1076599A (en) * | 1952-05-23 | 1954-10-27 | Method and apparatus for making yarns and crimped fibers | |
| US2908133A (en) * | 1956-08-09 | 1959-10-13 | Clemson Agricultural College O | False twister |
| FR1191361A (en) * | 1957-01-07 | 1959-10-19 | Hindley Brothers Ltd | Improvements in the production of crimped yarns |
| FR1255922A (en) * | 1957-11-04 | 1961-03-17 | Scragg & Sons | Device for twisting yarn |
| JPS5227851A (en) * | 1975-08-27 | 1977-03-02 | Toshiba Machine Co Ltd | Falseetwisting method |
| US4144700A (en) * | 1976-12-14 | 1979-03-20 | Murata Kikai Kabushiki Kaisha | False twisting apparatus |
| JPS5545849A (en) * | 1978-09-27 | 1980-03-31 | Oda Gosen Kogyo Kk | False twisting method and apparatus |
| FR2457333A1 (en) * | 1979-05-22 | 1980-12-19 | Asa Sa | DEVICE FOR COMMUNICATING FALSE FRICTION TORSION TO AT LEAST ONE MOVING WIRE |
| JPS5691021A (en) * | 1979-12-19 | 1981-07-23 | Teijin Ltd | Friction false twisting method and apparatus |
| JPS58174639A (en) * | 1982-04-06 | 1983-10-13 | 帝人株式会社 | False twisting apparatus |
| US4566265A (en) * | 1983-08-06 | 1986-01-28 | Rieter-Scragg Limited | Textile processing apparatus |
| JPS6215342A (en) * | 1985-07-04 | 1987-01-23 | カネボウ株式会社 | False twisting of special yarn |
| US4698959A (en) * | 1985-08-07 | 1987-10-13 | Barmag Ag | Apparatus for twisting multifilament yarn |
-
1987
- 1987-08-28 FR FR8712175A patent/FR2619831B1/en not_active Expired
-
1988
- 1988-07-21 US US07/222,430 patent/US4910953A/en not_active Expired - Fee Related
- 1988-08-17 JP JP63204562A patent/JPS6468532A/en active Pending
- 1988-08-25 DE DE8888420289T patent/DE3862830D1/en not_active Expired - Lifetime
- 1988-08-25 EP EP88420289A patent/EP0305305B1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1051587A (en) * | 1900-01-01 | |||
| FR2374443A1 (en) * | 1976-12-14 | 1978-07-13 | Murata Machinery Ltd | DEVICE FOR ADJUSTING THE PRESSURE FOR PINCHING BELTS IN A MISCELLANEOUS DEVICE |
| FR2484471A1 (en) * | 1980-06-14 | 1981-12-18 | Barmag Barmer Maschf | FALSE FRICTION TORSION DEVICE |
| FR2493882A1 (en) * | 1980-11-07 | 1982-05-14 | Murata Machinery Ltd | BELT-TYPE FALSE TORSION DEVICE |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107572314A (en) * | 2017-09-30 | 2018-01-12 | 宁波源生针织有限公司 | The yarn guide of adjustable tension |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3862830D1 (en) | 1991-06-20 |
| FR2619831B1 (en) | 1989-11-24 |
| FR2619831A1 (en) | 1989-03-03 |
| JPS6468532A (en) | 1989-03-14 |
| EP0305305B1 (en) | 1991-05-15 |
| US4910953A (en) | 1990-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0022421B1 (en) | Method and apparatus for producing a yarn having along its length alternating opposite twist zones | |
| FR2481985A1 (en) | DEVICE FOR CUTTING CONTINUOUS YARNS, IN PARTICULAR GLASS YARNS | |
| EP0085017A2 (en) | Device for drawing, condensing and moving a sliver of fibres in a spinning process | |
| EP0085635B1 (en) | Method and device for manufacturing a coreyarn | |
| EP0019562B1 (en) | Apparatus for imparting a false-twist by friction to at least one running yarn | |
| EP0305305B1 (en) | Device for imparting a false-twist by friction to at least one advancing yarn | |
| EP2066832B1 (en) | Improved cutting wheel | |
| FR2581631A1 (en) | Endless-screw device for forming flat loops of textile yarns | |
| FR2550233A1 (en) | ||
| CH692584A5 (en) | end spinning unit open type rotor and actuating process of this unit. | |
| EP0135456A1 (en) | Device for friction false-twisting at least one advancing yarn | |
| FR2552114A1 (en) | Device making it possible to impart a false twist by friction to at least one moving yarn | |
| WO2003064740A1 (en) | Device for cabling and continuous fixing of wires followed by complementary heat treatment | |
| EP0028577B1 (en) | Device for controlling a system for drawing strands of fibres | |
| EP0940488B1 (en) | Yarn-feed device for spinning machine, for throwing or texturing or similar operations | |
| EP0374059A1 (en) | Yarn-tensioning device for textile machines | |
| EP1554209A2 (en) | Device for winding a yarn on a holder driven in rotation | |
| WO1996016210A1 (en) | Process for stretching-texturing by false torsion, and new type of oven for implementing such process | |
| BE563777A (en) | ||
| EP0616059A1 (en) | Method and apparatus for drawing, using false twisting, textile fibre tows | |
| FR2635339A1 (en) | FREE SPINNING TYPE SPINNING PROCESS, AND DEVICE FOR CARRYING OUT SAID METHOD | |
| CH346316A (en) | Machine for the production of crimped textile yarns | |
| FR2580675A1 (en) | Process for producing a yarn by projecting fibres onto a perforated element | |
| FR2728551A1 (en) | Yarn brake giving wide range of tensions | |
| EP0399927A1 (en) | Creel for a spinning machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE ES GB IT LI |
|
| 17P | Request for examination filed |
Effective date: 19890127 |
|
| 17Q | First examination report despatched |
Effective date: 19900913 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE ES GB IT LI |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19910515 |
|
| ITF | It: translation for a ep patent filed |
Owner name: ING. A. GIAMBROCONO & C. S.R.L. |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
| REF | Corresponds to: |
Ref document number: 3862830 Country of ref document: DE Date of ref document: 19910620 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19930817 Year of fee payment: 6 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19940825 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19940825 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19990726 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19990727 Year of fee payment: 12 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000831 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000831 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010501 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050825 |