EP0305971B1 - Procédé et dispositif de filature par fausse torsion - Google Patents

Procédé et dispositif de filature par fausse torsion Download PDF

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Publication number
EP0305971B1
EP0305971B1 EP88114136A EP88114136A EP0305971B1 EP 0305971 B1 EP0305971 B1 EP 0305971B1 EP 88114136 A EP88114136 A EP 88114136A EP 88114136 A EP88114136 A EP 88114136A EP 0305971 B1 EP0305971 B1 EP 0305971B1
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EP
European Patent Office
Prior art keywords
suction
yarn
spinning
accordance
friction
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EP88114136A
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German (de)
English (en)
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EP0305971A1 (fr
Inventor
Hans Flueckiger
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Priority to AT88114136T priority Critical patent/ATE64630T1/de
Publication of EP0305971A1 publication Critical patent/EP0305971A1/fr
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    • 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 invention relates to a method and a device for false twist spinning according to the preamble of patent claims 1 and 11, respectively.
  • a method known per se (DE-AS 26 20 118 and US Pat. No. 4,183,202) consists of a false twist nozzle and a wrapping nozzle, in that a sliver emitted by a drafting device is divided into core fibers and edge fibers and the core fibers are seen through them in the yarn running direction , second twist nozzle are so-called wrongly twisted, while the edge fibers lying against the wrongly twisted yarn core are wound in the opposite direction of rotation around the wrongly twisted yarn core by the first nozzle, again in the direction of the thread.
  • these edge fibers are wound around the wrongly twisted yarn core as wrapping fibers, so that so-called corkscrew effects can occur on the yarn, which can give the yarn a certain stiffness and the fabric made from it a certain boardiness.
  • the fiber end of the individual edge fibers is wound into the so-called spinning triangle, and on the other hand, the edge fibers are rotated around the yarn core in the same direction of rotation as the direction of rotation of the yarn core, but with a much steeper slope, so that when the yarn core is untwisted, in which the core fibers are parallel, the edge fibers are rotated into an opposite rotation via a neutral position in which they are parallel to the yarn conveying direction.
  • the edge fibers have an S twist before the twist core is untwisted, but then a Z twist in the finished yarn.
  • edge fibers are wound around the yarn core sufficiently, but not so strongly that strong corkscrew effects can occur.
  • the invention has for its object to provide a false twist method with which the yarn core can be wound with edge fibers in a precisely predetermined, optimal strength and a high production speed is made possible.
  • a sliver 2 is brought to a predetermined width F in a sliver straightener 32 and then drawn in a main drafting zone 3 between a pair of apron rollers 4 and a pair of exit rollers 5 and produced in a false twist spinning unit 6 to form a yarn 7.
  • the drafting system shown is only that part of a drafting system which contains the main drafting zone 3 and which can additionally also contain a sliver funnel (not shown) and a drafting indexing field (not shown).
  • the false twist spinning unit 6 comprises an upper spinning disc 8, viewed in the direction of FIG. 1, and a lower spinning disc 9.
  • the spinning disc 8 comprises a friction ring 10 and a suction ring with a suction surface 11, while the spinning disc 9 comprises a friction ring 12 and a suction ring with a suction surface 13.
  • the friction ring 10 and the friction ring 12 each have a friction surface 21.
  • the suction surfaces 11 and 13 are also provided in a ring shape.
  • the holes 22 and 23 forming the suction surface are shown in the disks 8 and 9 (FIGS. 2, 3 and 13) only each in a section.
  • the upper spinning disc 8 is assigned a suction nozzle 14 and the lower spinning disc 9 of a suction nozzle 15.
  • the suction nozzles 14 and 15 extend close to the air inlet opening (e.g. 0.1-0.3 mm), but without contact, to the surface opposite the suction surface 11 and 13 in order to keep the false air inlet as small as possible.
  • the spinning disc 8 or 9 also has a cover wall 16 or 17, behind which the suction nozzle 14 or 15 is arranged.
  • a drive shaft 18 is provided for driving the spinning disc 8 and a drive shaft 19 is provided for driving the spinning disc 9.
  • the suction nozzles 14 and 15 each have a predetermined width A.
  • the suction nozzles 14 and 15 can be arranged such that the suction nozzles, as viewed in the direction of FIG. 2, either adjoin one another according to FIG. 17a or have a distance B.1 according to FIG. 17b or overlap by an amount B.2 as shown in Fig. 17c.
  • the meaning of these variants will be explained later in connection with the description of the operating conditions.
  • the two spinning disks 8 and 9 are not arranged coaxially, but are offset by a center distance C and, as can be seen from FIG. 1, are provided with a certain opening, in such a way that, as shown in FIG. 1 and 2 combined can be seen, only one closer to the clamping line K of the output roller pair 5, Rhombus-like crossing surface 21.1 is created as the contact surface of the friction surfaces 21 of the two friction rings 10 and 12.
  • bearings and drives of the drive shafts 18 and 19 are not shown for the sake of simplicity, but it goes without saying that bearing and drive elements must be provided in order to drive the spinning disks 8 and 9 in the directions of rotation X and Z.
  • suction nozzle 14 or 15 could each be attached to the element which serves to accommodate the bearings and the drive for the shafts 18 and 19, respectively.
  • the elements receiving the drive shafts 18 and 19 can be provided in such a way that at least one of the spinning disks can be lifted off the other in order to carry out necessary cleaning work on the mutually opposite surfaces of the spinning disks.
  • the drafting device 1 is adjusted with the aid of the hopper 32 (also called a condenser) in such a way that the sliver 2 with a substantially predetermined width F is released from the clamping line K formed by the pair of output rollers 5, so that the sliver 2, as with 2 to 6, are divided in the spinning process into edge fibers M or N and into the width R resulting from the spinning triangle S.
  • the subdivision arises as follows:
  • the suction of the suction surfaces 11 and 13 releases the fibers of the sliver 2 released from the clamping line K between the spinning disks 8 and 9 and conveys them against the yarn core line L, in which the Fibers meet from both directions of conveyance and part of them, looping around, forms a primarily twisted yarn core.
  • the suction nozzles 14 and 15 are brought together, as described earlier. It should be mentioned that the piecing or spinning conditions in production do not differ significantly, whether the suction nozzles 14 and 15 according to FIG. 17a, as viewed in FIG. 2, adjoin one another or according to FIG. 17b a distance B.1 ( in the experiment: 4 mm) or, according to FIG. 17c, an overlap of B.2 (in the experiment: 4 mm).
  • This common force component Y is shown schematically in FIG. 3 and without any statement about an effective force magnitude starting from an intersection point D, in which the center lines V and W of the suction surfaces 11 and 13 intersect.
  • the conveying action of the crossing surface 21.1 in the direction P must be selected such that a sufficiently large tension is created in the wrongly twisted yarn core, because this tension also determines the width R of the spinning triangle, with the conveying action being understood to mean a combination of the conveying force and the conveying speed.
  • This conveying effect in the direction P depends on the friction as well Yarn core and crossing surface 21.1 also depend on the size of the angular velocity of the friction rings 10 and 12 and the center distance C of the spinning disks 8 and 9.
  • the angular velocity is shown schematically and without any indication of effective quantities with the vectors G and H starting from the intersection of the center lines U and T, the common vector Q pointing in the yarn conveying direction P depending on the center distance C and the angular velocity.
  • the width R of the spinning triangle S and the total width F of the sliver 2 give rise to the width M or N of the edge fibers, which are also taken over by the suction surfaces 11 and 13, respectively.
  • these edge fibers are further away from the line L than the fibers forming the yarn core, they are no longer twisted as a yarn core, but are gripped by the rotating yarn core and wound around it.
  • this is to be understood in such a way that the fibers closer to the center are already twisted into a yarn core before the edge fibers M and N reach the line L, so that they remain as wrapping fibers when the yarn core is screwed in.
  • a so-called incorrectly rotated yarn core 24 is formed between the friction rings 10 and 12 in the area of the crossing surface 21.1, which extends between the crossing surface 21.1 and the spinning triangle S.
  • the edge fibers are wound around the yarn core 24 as follows:
  • the leading end of the edge fibers M and N (only one fiber from the area M is shown in FIGS. 4, 5 and 6 for the sake of simplicity) has been gripped by the rotating yarn core 24, it is provided that the trailing end of the gripped fiber is still guided in the clamping line K, a winding around the yarn core 24 in the same direction of rotation, ie with S-twist of the yarn core 24 also S-twist of the wrapping fiber, but with a much larger pitch ⁇ .
  • the slope ⁇ becomes somewhat smaller towards the spinning triangle and can correspond to the slope ⁇ shortly before the spinning triangle.
  • This smaller slope ⁇ towards the spinning triangle arises from the migration of the winding at a higher speed than the advancement of the yarn core in a direction opposite to the yarn advancement P, i.e. towards the spinning triangle, and ensures, provided that the rear fiber end is still covered by the clamping line K, that this fiber end is screwed into the spinning triangle, so that the rear fiber end subsequently released by the clamping line K in the yarn core retains the finished yarn .
  • the slope ⁇ thus also decreases with increasing speed of the hiking mentioned.
  • the distance E (FIG. 3) between the crossing area of the suction surfaces 11 and 13, which is shown concentrated with the crossing point D of the center lines V and W of the suction surfaces 11 and 13, and the clamping line K may be smaller than the length of the edge fibers M and N. If the front end of the fiber is twisted too early, the length of the edge fiber can be shortened in such a way that the wrapping strength given by the adhesive length of the thread is not sufficient to give the finished yarn sufficient tensile strength .
  • the twisting of the yarn core 25 takes place between the friction surface section 21.1 and the clamping line of the take-off roller pair 20 provided after the false twist unit.
  • the gradient ⁇ A (FIG. 7) of these wrapping fibers M1 and N1 essentially corresponds to the gradient difference ⁇ (FIG. 5), which results from the difference between the gradient ⁇ of the wrongly twisted core 24 and the gradient ⁇ of the edge fibers M and N.
  • the winding direction of the wrapping fibers M1 and N1 is opposite to that of the edge fibers M and N, i.e., if the edge fibers M and N have an S direction, the wrapping fibers have a Z direction.
  • the wound fibers have a position over a part of their length and for a short moment, which is parallel to the longitudinal axis of the yarn core, until they increasingly take on the opposite direction of twist as the yarn core is further untwisted.
  • FIGS. 9 and 10 show a further device for carrying out the method according to the invention. Instead of the spinning disks 8 and 9 shown in FIGS. 1 and 2, two crossed spinning straps 50 and 51 are shown therein.
  • These spinning straps 50 and 51 each comprise a metal carrier belt 52 and 53, which is received on rotatably mounted deflection rollers 54 and 55 or 56 and 57, not shown, with at least one deflection roller per spinning straps having to be drivable.
  • the driving and rotatable bearings are indicated with the shaft ends a.
  • the device precautions for storing and driving the stub shaft a are not shown, nor is a device for lifting at least one of the straps from the other.
  • the metal carrier tape 52 or 53 is perforated over the width b as a suction tape to form a suction surface 58 or 59 executed.
  • the holes required for this are partially marked with 60 and 61.
  • a friction belt 62 or 63 is drawn onto the metal carrier belt 52 or 53, in such a way that there is no slippage between the carrier belt and the friction belt.
  • the friction belt 62 or 63 has a width c, so that the width b of the suction surface and the width c of the friction belt together give the width of the metal carrier belt 52 or 53.
  • the friction belts 62 and 63 lie with the friction surfaces 64 practically without play on one another and, depending on the crossing angle ⁇ (FIG. 10a) of the spinning straps 50 and 51, form a rectangular or rhombic crossing surface 64.1.
  • the summed thickness of the friction belt 62 and 63 creates a corresponding distance between the suction surfaces 58 and 59.
  • a suction nozzle 65 is provided within the spinning strap 50 and a suction nozzle 66 is provided within the spinning strap 51, the suction nozzle 65 having a suction mouth 67 and the suction nozzle 66 each having a mouth length d ( 18a to c).
  • This suction mouth 67 or 68 has a width (not marked) which corresponds to the width of the perforated suction surface.
  • the suction orifices 67 and 68 are brought together as described for the suction nozzles 14 and 15. It should be mentioned in the same sense as for the suction nozzles 14 and 15 that the 18a either adjoin one another according to FIG. 18a, viewed with a view of FIG. 10, or can be arranged according to FIG. 18b with a distance e.1 or according to FIG. 18c with an overlap e.2.
  • two fiber guide plates 69 and 70 are provided between the crossed spinning straps 50 and 51, which guide all the fibers between the clamping line K and the suction surfaces 58 and 59, respectively.
  • the fiber guide plates 69 and 70 are provided for operation by means of supports 71 and 72, respectively.
  • the plates can also be swiveled away to carry out cleaning work.
  • FIGS. 10 and 10a The forces arising in the intersection area 64.1, which on the one hand impart the wrong twist to the yarn core and on the other hand the feed in the direction P, are identified in FIGS. 10 and 10a by H.1, G.1 and Q.1.
  • the conveying directions of the spinning belts 50 and 51 are marked with Z.1 and X.1.
  • the fibers emitted by the clamping line K over the fiber bandwidth F are sucked in by the suction surfaces 58 and 59 under guidance between the fiber guide plates 69 and 70, wherein, as already described for FIGS. 1 to 3, the fibers R form a yarn core forms, which is rotated by means of the crossing surface 64.1 to an incorrectly rotated yarn core.
  • the edge fibers from the edge fiber area M or N are wound around the wrongly twisted yarn core in the manner shown in FIGS. 4 to 6.
  • the twisting of the yarn core takes place, as for the device of FIGS. 1 to 3, between the friction surface section 21.1 or 24.1 and the clamping line of the pair of take-off rolls 20.
  • the distance E can be adjusted with or without changing the crossing angle ⁇ , the spinning belt 50 and 51 under the resulting change in the speed vector Q.
  • the enlarged section of a spinning disc 8 or 9 shown with FIG. 12 shows a special type of friction ring 10.1 or 12.1 which, as can be seen from this figure, is fastened with a certain pretension.
  • This pretension arises from the fact that the friction ring 10.1 or 12.1, with a nose 26 provided on the outer diameter, engages in a groove 27 which is provided in a spinning disc body 28.
  • the friction ring 10.1 or 12.1 is fastened in the spinning disc body 28 by means of a pressure disc 29 and a plurality of screws 30 distributed around the circumference of the pressure disc 29.
  • the prestressing of the friction ring 10.1 creates a concave curvature 73 shown in FIG. 12 on the inner surface 35 opposite the friction surface 21.
  • the friction surface 21 was ground after the prestressing to obtain a flat friction surface 21.
  • the advantage of the concave curvature is that any thick spots in the yarn core are resiliently let through by the friction ring.
  • a pneumatic conveying tube 31 is provided between the spinning disks 8 and 9 and the pair of draw-off rollers 20, which ensures that the yarn produced is guided in direction P against the draw-off rollers 20 during piecing. 1, one of the two take-off rollers is lifted from the other in the direction of arrow k in order to allow the yarn and the air carrying the yarn to pass between the take-off rollers.
  • the delivery pipe 31 is drawn as an injector pipe in that two air supply pipes 32 supply the air to the delivery pipe 31.
  • a conveyor tube 31 shown in FIGS. 13 and 14 can also be used between the crossed spinning straps 50 and 51 and the pair of draw rollers 20.
  • the spinning disc 8 is assigned a fiber guide plate 34 and the spinning disc 9 a fiber guide plate 35.
  • These fiber guide plates have the same function as the previously described fiber guide plates 69 and 70.
  • the fiber guide plate 34 has a mouth edge 36 and the fiber guide plate 35 has a mouth edge 37. These mouth edges 36 and 37 are provided parallel to the clamping line K.
  • the guide plate 34 is provided with a support plate 38 and the fiber guide plate 35 with a support plate 39, by means of which the fiber guide plates mentioned are arranged in a fixed manner for operation. These gussets can be removed for cleaning.
  • the support plates 38 and 39 are assigned to the cover walls 16 and 17 at a distance of only a few tenths of a millimeter and have at least the same width as the width A of the suction nozzles 14 and 15.
  • mouth edges 36 and 37 extend only so far into the diverging gap of the rollers 5 of the pair of output rollers that an air flow 40 between the mouth edges 36 and 37 and the rollers 5 has the possibility of entering between the fiber guide plates 34 and 35.
  • the spinning disk 8.1 has no cover wall 16 and the spinning disk 9.1 has no cover wall 17.
  • the upper spinning disc 8.1 as seen in FIG. 16, has an upper suction nozzle 41 and the lower spinning disc 9.1 has a lower suction nozzle 42.
  • the suction nozzles 41 and 42 are provided for stationary operation, but have the possibility of being able to be removed for cleaning purposes.
  • suction nozzles 41 and 42 have an associated fiber guide plate 45 and 46, the mouth edges 47 and 48 of which protrude only so far into the diverging gap of the rollers 5 of the pair of output rollers that the air flow 40 between the mouth edges 47 and 48 and the Rollers 5 can enter between the fiber guide plates 45 and 46.
  • the cavity below the curvature 73 (FIGS. 12 and 16) or above the curvature 73.1 (FIG. 16) is vented through a ventilation hole 74 or 74.1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Claims (24)

1. Procédé de filature par fausse torsion, dans lequel
- on délivre une bande (2) de fibres sous une largeur (F) prédéterminée, depuis un organe de réserve (1) de bande de fibres qui définit une ligne de pincement (K),
- on évacue les fibres de la bande (2) de fibres à l'aide de moyens d'aspiration (11, 13; 11.1, 13.1; 58, 59) par l'extrémité avant des fibres, considérée dans la direction de déplacement des fibres, et on conduit une partie interne des fibres à un dispositif de torsion (10, 12; 10.1, 12.1; 62, 63) situé en aval, afin de former à partir de cette partie de la bande (2) de fibres un noyau de fil (24) présentant une fausse torsion,
- on conduit ensuite d'autres parties de la bande de fibres (2), au moins des parties externes, sous la forme de fibres dites de bordure, au moyen des mêmes moyens d'aspiration (11, 13; 11.1, 13.1; 58, 59) jusqu'au noyau de fil (24), de telle manière que ces fibres de bordure s'enroulent autour du noyau de fil sous un angle (γ) inférieur à l'angle d'enroulement (β) du noyau (24) de fil présentant une fausse torsion,
caractérisé en ce que
- toutes les fibres sont évacuées au moyen de deux surfaces d'aspiration mobiles en sens contraires (11, 13; 11.1, 13.1; 58, 59) des moyens d'aspiration, ces fibres sont transportées sur ces surfaces d'aspiration et alimentées par celles-ci les unes contre les autres de telle sorte qu'elles s'entremêlent et sont alimentées dans la direction d'alimentation (P) du fil,
- les fibres alimentées par les surfaces d'aspiration (11, 13; 11.1, 13.1; 58, 59) dans la direction d'alimentation (P) de fil sont alimentées entre deux surfaces de friction (21, 64) mobiles en sens contraires du dispositif de torsion (10, 12; 10.1, 12.1; 62, 63), ces surfaces de friction étant prévues immédiatement en aval, en considérant la direction de déplacement (P) du fil, des surfaces d'aspiration (11, 13; 11.1, 13.1; 58, 59), et les fibres sont prélevées par le dispositif de torsion (10, 12; 10.1, 12.1; 62, 63) de telle manière que ces fibres sont d'une part enroulées sur le noyau de fil (24) enroulé en fausse torsion et d'autre part alimentées au delà dans la direction d'alimentation (P) du fil, et
- la distance (E) entre la ligne de pincement (K) et un point de croisement (D; D.1) imaginaire prédéterminé des surfaces de friction est choisi, par rapport à la longueur moyenne des fibres de la bande de fibres (2), de telle manière que les fibres de bordure sont saisies à leurs extrémités avant par le noyau (24) de fil en rotation, tant que leurs extrémités arrière sont encore retenues dans ladite ligne de pincement (K), et de telle sorte que ces fibres de bordure ne quittent la ligne de pincement (K) qu'après avoir été enroulées autour du noyau (24) de fil et qu'elles ont été saisies par un triangle de filature (S).
2. Procédé selon la revendication 1, caractérisé en ce que la largeur (F) de la bande de fibres (2) est préétablie par un entonnoir (32) pour bande de fibres.
3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que les surfaces d'aspiration mobiles (11, 13; 11.1, 13.1; 58, 59) se déplacent l'une par rapport à l'autre et se recouvrent en un point, en regardant les surfaces de succion, de telle manière que leurs directions de déplacement (X, Z; X.1, Z.1) produisent au point de recouvrement (D; D.1) une direction commune (Y, Y.1) de déplacement, ou de force, dans la direction (P) de déplacement du fil, qui est suffisamment élevée pour alimenter les fibres transportées sur les surfaces d'aspiration vers le dispositif de torsion (10, 12; 10.1, 12.1; 62, 63).
4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les deux surfaces de friction (21; 64) qui se déplacent en sens contraires et l'une contre l'autre dans une surface de croisement (21.1; 64.1) produisent dans cette surface de croisement (21.1; 64.1) une direction commune (Q) de déplacement, ou de force, dans la direction (P) de déplacement du fil, qui est suffisamment élevée pour engendrer une tension dans le noyau (24) de fil sous fausse torsion, ladite tension conférant une largeur prédéterminée (R) au triangle de filature (S) produit par le noyau (24) de fil enroulé sous fausse torsion.
5. Procédé selon la revendication 3, caractérisé en ce que les directions de déplacement (X, Z) des surfaces d'aspiration annulaires (11, 13; 11.1, 13.1), considérées sous la forme de vecteurs passant par le point de croisement (D) des lignes médianes (V, W) des surfaces d'aspiration, sont tangentes à ces lignes médianes.
6. Procédé selon la revendication 4, caractérisé en ce que les directions de déplacement des surfaces annulaires de friction (21) en rotation autour de leurs centres, considérées sous la forme de vecteurs (G, H) passant par le point de croisement des lignes médianes (T, U) des surfaces de friction, sont tangentes à ces lignes médianes.
7. Procédé selon la revendication 3, caractérisé en ce que les directions de déplacement (X.1, Z.1) des surfaces d'aspiration (58, 59), réalisées sous la forme de surfaces de bande sans fin, linéaires et mobiles, considérées sous la forme de vecteurs alignés sur les lignes médianes (f) de chaque bande, s'écartent de ces lignes médianes à partir de leur point de croisement (D.1).
8. Procédé selon la revendication 4, caractérisé en ce que les directions de déplacement des surfaces d'aspiration (64), réalisées sous la forme de surfaces de bande sans fin, linéaires et mobiles, considérées sous la forme de vecteurs (H.1, G.1) alignés sur les lignes médianes (h) de chaque bande, s'écartent de ces lignes médianes à partir de leur point de croisement.
9. Procédé selon la revendication 1, caractérisé en ce que la largeur de la bande de fibres étendue est supérieure de 10 à 30% à la largeur du triangle de filature (S).
10. Procédé selon la revendication 1, caractérisé en ce que le fil (7) délivré par le dispositif de torsion (10, 12; 10.1, 12.1; 62, 63) dans la direction d'alimentation (P) de fil est repris par un organe de transfert de fil (31) et transmis à une paire de rouleaux (20) d'extraction.
11. Appareil pour la mise en oeuvre du procédé selon la revendication 1, comprenant:
- un organe de réserve (1) de bande de fibres définissant une ligne de pincement (K), au moyen duquel la bande de fibres (2) est fournie à partir de la ligne de pincement (K) sous une largeur prédéterminée (F), et
- un organe de filature (8, 9; 8.1, 9.1; 50, 51) qui comporte:
- un dispositif d'aspiration (11, 13; 11.1, 13.1; 58, 59; 14, 15; 65, 66) pour évacuer et transporter les extrémités avant des fibres fournies par l'organe de réserve (1), considérées dans la direction de déplacement des fibres, et
- un organe de torsion (10, 12; 10.1, 12.1; 62, 63) pour enrouler une partie des fibres délivrées par le dispositif d'aspiration sous la forme d'un noyau (24) de fil enroulé sous fausse torsion,
- ainsi que des moyens (20) pour extraire le fil terminé (7),
caractérisé en ce que
- le dispositif d'aspiration comporte deux surfaces d'aspiration perforées (11, 13; 11.1, 13.1; 58, 59), lesdites surfaces d'aspiration étant disposées en regard l'une de l'autre, tournant en sens opposés, et se recouvrant partiellement,
- le dispositif de torsion (10, 12; 10.1, 12.1; 62, 63) comprenant deux surfaces de friction (21, 64), et
- chaque surface d'aspiration et chaque surface de friction sont placées côte-à-côte et se déplacent dans la même direction, la surface d'aspiration étant placée, en considérant la direction (P) de déplacement du fil, avant la surface de friction.
12. Appareil selon la revendication 11, caractérisé en ce que les surfaces d'aspiration (11, 13; 11.1, 13.1; 58, 59) et les surfaces de friction (21, 64) sont menées conjointement.
13. Appareil selon la revendication 12, caractérisé en ce que chaque surface d'aspiration (11, 13; 11.1, 13.1; 58, 59) et chaque surface de friction (21, 64) respective sont fixées l'une à l'autre.
14. Appareil selon la revendication 13, caractérisé en ce qu'il est prévu une surface d'aspiration (11, 11.1; 13, 13.1) et une surface de friction (21) ménagées sur un disque mené (8, 9; 8.1, 9.1) autour d'un axe de rotation et en ce que la surface d'aspiration (11, 13; 11.1, 13.1) est de forme annulaire, de même que la surface de friction (21), la surface de friction étant agencée à l'intérieur de la surface d'aspiration, la surface de friction étant décalée par rapport à la surface d'aspiration transversalement à l'axe (L) et la surface d'aspiration faisant saillie en direction de l'axe (L) du fil.
15. Appareil selon la revendication 14, caractérisé en ce que les surfaces d'aspiration (11, 11.1; 13, 13.1) et les surfaces de friction (21) sont disposées coaxialement.
16. Appareil selon la revendication 13, caractérisé en ce que le dispositif de filature comprend deux disques (8, 9; 8.1, 9.1) qui se font face et sont décalés l'un par rapport à l'autre sur une distance d'entr'axe (C) d'un axe de rotation (18) à l'autre (19) dans une direction perpendiculaire à la direction (P) de déplacement du fil, en ce que les surfaces d'aspiration et les surfaces de friction de chaque disque se recouvrent et en ce que le point de croisement (D) des lignes médianes (V, W) des surfaces d'aspiration résultant de ce recouvrement est situé à une distance (E) prédéterminée de la ligne de pincement (K), en ce que les vecteurs de vitesse des surfaces d'aspiration (11, 13; 11.1, 13.1), qui s'écartent en direction tangentielle à partir du point de croisement (D), présentent une composante commune (Y) dans la direction (P) d'alimentation du fil, et en ce que les surfaces de friction (21) se recouvrant présentent une composante de force commune (Q) dans la direction (P) d'alimentation du fil, mais en ce que les disques (8, 9; 8.1, 9.1) sont disposés de manière entrebâillée, considérés dans la direction (P) d'alimentation, de telle sorte que seule la surface de croisement (21.1) située la plus proche de la ligne de pincement (K) produit une composante de force commune (Q) dans la direction d'alimentation (P) du fil.
17. Appareil selon la revendication 13, caractérisé en ce qu'il est prévu une surface d'aspiration (58; 59) et une surface de friction (64) sur une bandelette de filature (50; 51) sans fin et menée, dotée d'une bande d'aspiration s'étendant sur une partie donnée (b) de la largeur de la bandelette de filature et présentant la surface d'aspiration (58; 59), et d'une bande de friction (62; 63) s'étendant sur le reste de la largeur (c) de la bandelette de filature et présentant la surface de friction (64), la surface de friction, considérée dans la direction d'alimentation des fibres, étant disposée en aval de la surface d'aspiration et la surface de friction étant à un niveau inférieur à la surface d'aspiration.
18. Appareil selon la revendication 14, caractérisé en ce que la surface d'aspiration (58, 59) et la surface de friction (64) sont placées directement côte-à-côte.
19. Appareil selon la revendication 17, caractérisé en ce que le dispositif de filature consiste en deux bandelettes de filature (50, 51), disposées mutuellement en croix et opposées l'une à l'autre de telle façon que le point de croisement (D.1) des lignes médianes (f) des surfaces d'aspiration est situé à une distance (E) prédéterminée de la ligne de pincement (K), et en ce que les vecteurs vitesse des surfaces d'aspiration (58, 59) présentent une composante commune (Y.1) dans la direction (P) d'alimentation du fil, et en ce que les surfaces de friction (64) qui se recouvrent présentent une composante de force commune (Q.1) dans la direction (P) d'alimentation du fil.
20. Appareil selon la revendication 11, caractérisé en ce qu'il est prévu un élément de guidage de fibres (34, 35; 45, 46; 69, 70) entre l'organe de réserve de bande de fibres (1) et le dispositif de filature (8, 9; 8.1, 9.1; 50, 51), afin de guider les fibres entre la ligne de pincement (K) et le dispositif de filature.
21. Appareil selon la revendication 20, caractérisé en ce que l'élément de guidage de fibres (45, 46) comprend deux extensions des buses de succion (41, 42) écartées et symétriques, et dirigées vers la paire de rouleaux de sortie (5).
22. Appareil selon l'une des revendications 16 ou 18, caractérisé en ce qu'il est prévu un tube d'alimentation pneumatique (31) entre le dispositif de filature (8, 9; 8.1, 9.1; 50, 51) et les moyens d'extraction (20) destinés à l'extraction du fil terminé, afin de transporter le fil depuis le dispositif de filature jusqu'aux moyens d'extraction (20) du fil.
23. Appareil selon la revendication 14, caractérisé en ce qu'au moins un anneau de friction (10.1, 12.1) est agencé perpendiculairement à l'axe du fil (L) et capable de céder élastiquement.
24. Appareil selon la revendication 23, caractérisé en ce que les anneaux de friction (10.1, 12.1) sont engagés sous pré-contrainte dans les disques de filature (8, 9), ou les bandelettes de filature (50, 51).
EP88114136A 1987-08-31 1988-08-30 Procédé et dispositif de filature par fausse torsion Expired - Lifetime EP0305971B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88114136T ATE64630T1 (de) 1987-08-31 1988-08-30 Verfahren und vorrichtung zum falschdrallspinnen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3333/87 1987-08-31
CH333387 1987-08-31

Publications (2)

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EP0305971A1 EP0305971A1 (fr) 1989-03-08
EP0305971B1 true EP0305971B1 (fr) 1991-06-19

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EP88114136A Expired - Lifetime EP0305971B1 (fr) 1987-08-31 1988-08-30 Procédé et dispositif de filature par fausse torsion

Country Status (7)

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US (1) US4823545A (fr)
EP (1) EP0305971B1 (fr)
JP (1) JPH01168922A (fr)
CN (1) CN1031728A (fr)
AT (1) ATE64630T1 (fr)
BR (1) BR8804423A (fr)
DE (1) DE3863330D1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361257A1 (fr) * 1988-09-29 1990-04-04 Maschinenfabrik Rieter Ag Rouleaux d'alimentation dans un train d'étirage
DE3927739A1 (de) * 1989-08-23 1991-02-28 Fritz Stahlecker Verfahren und vorrichtung zum falschdrallspinnen
EP0415295B1 (fr) * 1989-09-01 1995-04-19 Maschinenfabrik Rieter Ag Procédé de filage à fausse torsion et dispositif pour la mise en oeuvre de ce procédé
US5237810A (en) * 1989-09-01 1993-08-24 Maschinenfabrik Rieter Ag Method and apparatus for false twist spinning
JP2624139B2 (ja) * 1993-08-06 1997-06-25 村田機械株式会社 毛羽抑制装置
JP2951209B2 (ja) * 1994-07-11 1999-09-20 村田機械株式会社 合糸用仮撚り装置
JP2626571B2 (ja) * 1994-07-15 1997-07-02 村田機械株式会社 紡績装置
JP3564877B2 (ja) * 1996-06-11 2004-09-15 村田機械株式会社 Ｓｚ同時仮撚用円盤
DE10318817A1 (de) * 2003-04-17 2004-11-04 Wilhelm Stahlecker Gmbh Spinnvorrichtung mit einer Faserverband-Verdichtungseinrichtung
DE102009059052A1 (de) * 2009-12-15 2011-06-16 Wilhelm Stahlecker Gmbh Ringspinnvorrichtung mit Falschdralleinrichtung
CN108642634A (zh) * 2018-05-24 2018-10-12 江苏阳光股份有限公司 一种半精纺羊毛/腈纶混纺赛络段彩纱生产方法
JP2021042509A (ja) * 2019-09-13 2021-03-18 村田機械株式会社 紡績ユニット及び紡績糸の製造方法

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Publication number Priority date Publication date Assignee Title
FR1198002A (fr) * 1958-01-29 1959-12-04 Dispositif de frottage ou tordage continu pour machines de filature
JPS51130334A (en) * 1975-05-06 1976-11-12 Murata Machinery Ltd Apparatus for making spun yarns
JPS52107349A (en) * 1976-03-04 1977-09-08 Murata Machinery Ltd Spun yarn and method of producing same
FR2480799A1 (fr) * 1980-04-17 1981-10-23 Alsacienne Constr Meca Procede et dispositif pour la filature de fibres textiles liberees
AT381731B (de) * 1982-12-10 1986-11-25 Fehrer Ernst Verfahren und vorrichtung zum herstellen eines garnes aus einer verstreckten faserlunte
CH660888A5 (de) * 1982-05-07 1987-05-29 Barmag Barmer Maschf Friktionsfalschdraller.
FR2545108B1 (fr) * 1983-04-29 1986-04-04 Juillard Yves Procede de filature et dispositif pour la mise en oeuvre de ce procede
IN161355B (fr) * 1983-07-01 1987-11-14 Rieter Ag Maschf
FR2560230B1 (fr) * 1984-02-24 1987-12-04 Asa Sa Procede pour l'obtention d'un file de fibres
IN164144B (fr) * 1984-05-18 1989-01-21 Rieter Ag Maschf
DE3522657A1 (de) * 1984-06-28 1986-01-16 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Friktionsfalschdraller
CH665854A5 (de) * 1985-01-17 1988-06-15 Heberlein Hispano Sa Vorrichtung zum herstellen eines umwindegarnes.
FR2583783A1 (fr) * 1985-06-25 1986-12-26 Asa Sa Dispositif pour etirer, condenser et transporter une meche de fibres lors d'une operation de filature.
JPS62117830A (ja) * 1985-11-15 1987-05-29 Murata Mach Ltd 紡績糸の製造装置

Also Published As

Publication number Publication date
BR8804423A (pt) 1989-03-28
ATE64630T1 (de) 1991-07-15
EP0305971A1 (fr) 1989-03-08
DE3863330D1 (de) 1991-07-25
US4823545A (en) 1989-04-25
JPH01168922A (ja) 1989-07-04
CN1031728A (zh) 1989-03-15

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