EP3724385B1 - Banc d'étirage pour machine à filer ayant un dispositif de compactage et procédé de compactage d'un ruban de fibres - Google Patents

Banc d'étirage pour machine à filer ayant un dispositif de compactage et procédé de compactage d'un ruban de fibres Download PDF

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Publication number
EP3724385B1
EP3724385B1 EP18815979.2A EP18815979A EP3724385B1 EP 3724385 B1 EP3724385 B1 EP 3724385B1 EP 18815979 A EP18815979 A EP 18815979A EP 3724385 B1 EP3724385 B1 EP 3724385B1
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EP
European Patent Office
Prior art keywords
clamping point
fiber
roller
zone
drafting
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EP18815979.2A
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German (de)
English (en)
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EP3724385A1 (fr
Inventor
Gernot Schaeffler
Peter Blankenhorn
Martin Widmann
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication of EP3724385A1 publication Critical patent/EP3724385A1/fr
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides
    • 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
    • D01H1/02—Spinning or twisting machines in which the product is wound-up continuously ring type
    • D01H1/025—Spinning or twisting machines in which the product is wound-up continuously ring type with a condensing device between drafting system and spinning unit

Definitions

  • the present invention relates to a drafting system with a device for compressing drafted slivers in a spinning machine and a corresponding method.
  • Drafting devices for spinning machines comprise at least two pairs of rollers between which a fiber structure is drawn due to the different speeds of the pairs of rollers.
  • the pair of rollers after which the drafted fiber structure leaves the drafting system and is fed to a spinning device is referred to as the pair of exit rollers.
  • the pair of output rollers consists of an output upper roller and an output lower roller, which form a nip through which the fiber strand is conveyed.
  • Devices for compressing the stretched fiber structure are arranged after the exit roller pair, mechanical as well as pneumatic compression devices are used.
  • the compression device disclosed therein is of a pneumatic type and essentially consists of a suction shoe and a perforated transport means. In this case, a pressure element is applied to one of the rollers of the pair of output rollers, which forms a second nip point with the roller next to the nip point between the output top roller and the output bottom roller. The compression zone is located between the two clamping points and delimited by the suction shoe.
  • the EP 1 134 309 A1 On a Design and arrangement of the opening in the suction shoe is the EP 1 134 309 A1 not a.
  • a disadvantage of the proposed device is that in the compression zone the individual fibers of the fiber structure are to be bound into it and for this purpose the fibers are moved in their entire length without being held via the perforated transport means transversely to the conveying direction with the aid of an air flow, which can also lead to a loss of the stretching of the fiber structure determined by the drafting system.
  • the fiber structure is conveyed by the transport means, the second clamping point only serves to prevent a yarn twist of the fiber structure from being able to propagate into the compression zone.
  • a method for compressing a drafted fiber structure in a compression zone following a pair of output rollers of a drafting system is known.
  • the fiber structure is transported through the compression zone by means of a perforated, vacuum-extracted conveyor belt.
  • the fiber strand reaches the compression zone, it moves in the same direction as the means of transport.
  • a sufficient quantity of the fibers in the fiber structure is still clamped by the pair of exit rollers during compaction.
  • the front ends of the fibers of the fiber structure to be compressed do not dip into the perforations of the conveyor belt and thus lead to blockages. Due to the large distance between the clamping points and the great length of the suction slot below the conveyor belt, fibers are moved transversely to their longitudinal alignment and compress the entire fiber structure.
  • the object of the present invention is to achieve compression of the fiber structure by bundling the fibers and to create a device for this purpose which is characterized in that fibers are nestled against the fiber structure without moving the individual fibers transversely to the direction of travel via a transport means.
  • a drafting system for a spinning machine for drafting a fiber structure with at least a first pair of rollers consisting of an upper roller and a lower roller, and with a second pair of rollers consisting of an output upper roller and an output lower roller, with a first nip point being formed by the first pair of rollers and a second nip point is defined by the second pair of rollers.
  • the first nipping point and the second nipping point form a drafting field plane, which is traversed by the fiber structure in a running direction from the first nipping point to the second nipping point.
  • the drafting system comprises a fiber compression zone downstream of the pair of output rollers for compression of the drafted fiber bundle, which has a pneumatic compression device with a fiber bundling zone and with a suction pipe wrapped around by a screen element and capable of being sucked out.
  • the fiber bundling zone is delimited by the second nip and a third nip, the third nip being formed by the exit top roller and the screen element.
  • the suction pipe has a slit-shaped suction opening with a length of 2.0 mm to 5.0 mm, which is arranged in the fiber bundling zone, the slit-shaped suction opening in the suction pipe being arranged from one end of the suction pipe facing the second clamping point in the direction of the third clamping point .
  • the ambient air sucked in through the suction opening means that individual fibers protruding from the fiber structure are moved to the suction opening and the fiber structure is thus bundled.
  • conventional pneumatic compaction in which the fiber structure is moved on a screen element transversely to its running direction and the fibers are thus pushed together, with fiber bundling only fiber parts or fiber ends protruding from the fiber structure are brought up to the fiber structure without the fiber structure being deflected from its running direction .
  • the fiber ends are guided to the fiber structure by a pneumatic suction flow and applied to the fiber structure in the third clamping point.
  • the suction tube and thus the screen element are advantageously brought as close as possible to the second clamping point. As a result, fiber parts or fiber ends that protrude from the fiber structure are caught by the air flow immediately after leaving the second clamping point and placed against the fiber structure.
  • a distance from the second nip point to the third nip point along a surface of the output top roller is less than an average staple length of the fiber structure to be drawn.
  • the constant clamping of at least one fiber end also prevents the fiber structure from losing or partially losing the stretching applied in the drafting system while passing through the fiber bundling zone.
  • the screen element is also driven by the output top roller through the third clamping point.
  • the frictional drive of the screen element creates a slight slip, so that the screen element has a lower speed than the output roller pair. This circumstance also contributes to the fact that a bundling of the fiber structure or an integration of protruding fiber ends in the fiber structure becomes possible.
  • the suction opening is advantageously arranged in a flat surface of the suction tube in the fiber bundling zone.
  • the suction opening can be arranged in a curved surface of the suction tube in the fiber bundling zone, the curvature being less than 0.04 1/mm.
  • the flat surface of the suction pipe is preferably inclined at an angle of 45° to 75°, preferably 62° to 65°, to a perpendicular to the direction of travel with respect to the plane of the drawing field.
  • a tangent in the third clamping point on the curved surface of the suction tube is inclined to a perpendicular to the direction of travel by an angle of 45° to 75°, preferably 62° to 65° to the plane of the stretching field.
  • the fiber bundle moves between the second and third clamping point through the fiber bundling zone over the screen element guided on the suction pipe. Due to the difference in speed between the second and third clamping point, the fiber bundle sags slightly.
  • the fiber structure follows not exactly on the surface of the output top roller but moves in the direction of the suction pipe after leaving the second nip. With a corresponding inclination of the surface of the suction tube, this movement is absorbed in such a way that the protruding fiber ends can rest against the fiber structure due to the air flow.
  • a radial distance between the output bottom roller and the screen element lying against the suction pipe is 0.4 mm to 2.0 mm.
  • the slit-shaped suction opening is arranged in a longitudinal extent inclined within ⁇ 15 degrees to the running direction.
  • the arrangement of the slit-shaped suction opening in the running direction of the fiber structure is particularly preferred.
  • the bundling of the fibers should not take place through a movement of the fiber structure transversely to its running direction. Only the fibers or fiber ends protruding from the fiber structure should be nestled against the fiber structure. A movement of the entire fiber structure transverse to the running direction is not necessary for this.
  • the suction pipe protrudes less than 5 mm beyond the third clamping point in a running direction of the sieve element.
  • the shortest possible guidance of the fiber structure through the screen element after the third Terminal point results in advantages for the geometric arrangement of the subsequent spinning device. This also minimizes the risk of the fiber structure shifting laterally on the sieve element and thus damage to the previously bundled fiber structure.
  • the top exit roller has a curtain opposite the bottom exit roller in the drafting field plane, viewed in the direction of travel. It is also advantageous if the curtain, measured in the drafting zone, is between 2 mm and 15 mm and/or the ratio of the diameter of the top roller to the diameter of the bottom roller is 1.4 to 2.5, preferably 1.79 for one diameter the output top roll of 50 mm and a diameter of the output bottom roll of 28 mm.
  • the curtain of the upper exit roller opposite the lower exit roller enables the third nip to be located close to the second nip. The enlargement of the upper exit roller compared to the lower exit roller improves the spatial arrangement of the fiber bundling zone.
  • a method for compressing a fiber structure consisting of individual fibers in a spinning machine with at least a first pair of rollers consisting of an upper roller and a lower roller, and with a second pair of rollers consisting of an output upper roller and an output lower roller, with a first nip point being formed by the first pair of rollers and a second nip point can be defined by the second pair of rollers, and the first nip point and the second nip point form a drafting field plane through which the fiber strand runs in a direction from the first nip point to the second nip point, and with a fiber compression zone downstream of the pair of output rollers for the compression of the stretched fiber structure, which has a pneumatic compression device with a fiber bundling zone and with a looped by a screen element and having a suckable suction tube, wherein the fiber bundling zone is delimited by the second nip and a third nip, wherein the third
  • the fiber structure is guided through the sieve element via the suction opening to the third clamping point and the individual fibers are caught by the third clamping point before leaving the second clamping point, with fiber ends protruding from the fiber structure being laid against the fiber structure when the suction opening is passed. It is advantageous if the majority of the fibers are not transported from the second clamping point to the third clamping point by the sieve element without being clamped. Due to the arrangement of the suction opening immediately after the second clamping point, the protruding fiber ends are caught by the air flow after leaving the second clamping point and the fiber structure is created, while the front end of the corresponding fiber is already held by the third clamping point.
  • the fiber ends move through the free space in the fiber bundling zone after leaving the second clamping point before they meet the screen element. This makes it possible for the fiber ends to be moved freely from the fiber structure and therefore only small forces are required to apply protruding fibers or fiber ends to the fiber structure.
  • FIG 1 shows a schematic representation of a longitudinal section of a spinning machine according to the prior art, in particular a ring spinning machine. Shown are examples of individual components of the spinning machine, namely a drafting system 2 and a spinning device 14.
  • the drafting system 2 consists of three pairs of rollers, an input roller pair 5, a pair of apron rollers 64 and an output roller pair 9.
  • the pair of apron rollers 6 is formed by an upper roller 7 and a lower roller 8
  • the exit roller pair 9 is formed by an exit upper roller 10 and an exit lower roller 11.
  • the two rollers of a roller pair are pressed against each other and form a nip at their point of contact, with the nip point K1 being formed by the upper roller 7 and the lower roller 8 and the nip point K2 being formed by the pair of exit rollers 9 is formed between the output top roller 10 and the output bottom roller 11.
  • the fiber structure 1 entering the drafting system 2 runs through the drafting system 2 in the running direction 3 and is thereby clamped between the rollers of the roller pairs 3, 4 and 5 by the clamping points. Due to the different speeds of the roller pairs 3, 4 and 5, the fiber structure 1 is stretched. In this case, the clamping points K1 and K2 form a stretching field plane 4 .
  • the fiber structure 1 is transported through the drafting system 2 at the same time.
  • the drafted fiber structure 12 reaches a thread guide 13 and is then conveyed to the spinning device 14.
  • the spinning device 14 consists essentially of a ring rail 18, which carries the spinning ring 16, and a spindle rail 19, on which the bobbin 17 is attached is.
  • the fiber bandage 12 reaches the bobbin 17 via a runner 15.
  • the bobbin 17 is set in rotation, with the result that the runner 15 is also set in rotation by the fiber structure 12 on the spinning ring 16. Due to the different rotational speed of the bobbin 17 and the rotor 15, the fiber structure 12 is rotated and a yarn is thereby formed which is wound onto the bobbin 17 by moving the ring rail 18 up and down.
  • FIG 2 shows a schematic representation of a longitudinal section of an embodiment according to the invention of a compression device of the drafting system.
  • the apron roller pair 6, consisting of an upper roller 7 and a lower roller 8 forms a first nip K1.
  • the fiber strand 1 to be drawn is guided in the running direction 3 by the pairs of rollers 6 and 9 through the drafting system.
  • the pairs of rollers 6 and 9 form a drawing zone plane 4 through their clamping points K1 and K2.
  • the upper exit roller 10 has a curtain A of preferably 10 mm in its arrangement opposite the lower exit roller 11 in the drafting zone plane 4 seen in the running direction 3 .
  • the upper exit roller 10 has a diameter E which is greater than the diameter F of the lower exit roller 11, with a ratio of the diameter E of the upper exit roller 10 to the diameter F of the lower exit roller 11 preferably being 1.79. Because of these specific geometric relationships between the output top roller 10 and the output bottom roller 11, ideal conditions for the formation of a fiber bundling zone 20 are created.
  • a suction pipe 21 is arranged downstream of the pair of output rollers 9 .
  • the suction tube 21 is wrapped by a sieve element 22 which is designed as an endless belt and is guided over a deflection 25 .
  • the screen element 22 forms a third clamping point K3 for the drawn fiber structure with the output top roller 10 .
  • the shape of the intake manifold 21 is shown as a triangle by way of example.
  • a nip length B is formed from the second nip point K2 to the third nip point K3 along a surface of the output top roller 10, which is less than an average staple length of the fiber structure 1 to be drawn.
  • the suction pipe 21 has a suction opening 24 in this fiber bundling zone 20.
  • the suction opening 24 is formed as a slit-shaped opening in the wall of the suction pipe 21.
  • the suction pipe 21 is connected to a vacuum source (not shown), which causes air to be sucked out of the fiber bundling zone 20 via the suction opening 24 and thus also through the screen element 22 sliding over the suction opening 24 .
  • the resulting air flow pulls the stretched fiber structure towards the screen element 22, with individual fibers or fiber parts protruding from the stretched fiber structure being conveyed to the suction opening 24 and thus clinging to the stretched fiber structure.
  • the individual fibers of the fiber structure are mostly held either by the second clamping point K2 or the third clamping point K3 due to the short clamping length B, so that only the free ends of the fibers are tied into the fiber structure.
  • the arrangement of the slit-shaped suction opening 24 from one end of the suction tube 21 facing the second clamping point K2 in the direction of the third clamping point K3 also causes the fiber ends to be immediately gripped by the suction effect after leaving the second clamping point K2.
  • the suction tube 21 has a flat surface towards the fiber bundling zone 20 which is inclined at an angle ⁇ of 62° towards the drawing field plane 4 with respect to a perpendicular to the drawing field plane 4 .
  • the screen element 22 which runs around the suction tube 21 is arranged at a distance C of 1.0 mm from the bottom roller 11 at the exit. This forms a fiber bundling zone 20 closed by the upper exit roller 10, the lower exit roller 11 and the suction pipe 21, so that the majority of the ambient air sucked in through the suction opening 24 is sucked in from the side, i.e. transversely to the direction of movement of the fiber structure, into the fiber bundling zone 20.
  • the screen element 22 is set in motion by the output top roller 10 via the resulting frictional force in the third clamping point K3, as a result of which the drafted fiber structure is fed from the fiber bundling zone 20 to the third clamping point K3.
  • the compacted fiber strand 23 then leaves the screen element 22, and the aim is for the suction pipe 21 to overhang as little as possible beyond the third clamping point K3.
  • the compacted fiber strand 23 is transferred to the spinning device 14 or to the thread guide 13 of the spinning machine that is upstream of the spinning device 14 (see FIG figure 1 ).
  • the geometry of the suction pipe 21 makes it possible to maintain the inlet geometry necessary for the spinning device 14 to function properly, despite the additional arrangement of the compression device.
  • FIG figure 3 shows a schematic representation of a plan view in direction X according to FIG figure 2 .
  • the output top roller 10 is indicated, so that the screen element 22 running around the suction pipe 21 can be seen.
  • a slit-shaped suction opening 24 with a length L is provided in the suction pipe 21 located below the sieve element 22 .
  • the fiber structure 23 running over the screen element 22 shows protruding fiber ends in the area the end of the suction opening 24 which faces the bottom roller 11 at the exit. In the course of the suction opening 24 in the direction of travel 3 , the protruding fiber ends are applied to the fiber structure 23 by the action of the ambient air which is directed towards the suction opening 24 transversely to the direction of travel 3 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (14)

  1. Dispositif d'étirage (2) pour une machine à filer pour l'étirage d'un ensemble de fibres (1), avec au moins une première paire de cylindres (6) composée d'un cylindre supérieur (7) et d'un cylindre inférieur (8), et avec une deuxième paire de cylindres (9) composée d'un cylindre de sortie supérieur (10) et d'un cylindre de sortie inférieur (11), dans lequel un premier point de serrage (K1) est défini par la première paire de cylindres (6) et un deuxième point de serrage (K2) est défini par la deuxième paire de cylindres (9) et le premier point de serrage (K1) et le deuxième point de serrage (K2) forment un plan de champ d'étirage (4) qui est Lauf par l'ensemble de fibres (1) dans un sens de défilement (3) du premier point de serrage (K1) au deuxième point de serrage (K2), et avec une zone de compactage de fibres disposée en aval de la paire de cylindres de sortie (9) pour le compactage de l'ensemble de fibres (1) étiré, qui présente un dispositif de compactage pneumatique avec une zone de mise en faisceau de fibres (20) et avec un tube d'aspiration (21) entouré par un élément de tamisage (22) et pouvant être aspiré, dans lequel la zone de mise en faisceau de fibres (20) est limitée par le deuxième point de serrage (K2) et un troisième point de serrage (K3), dans lequel le troisième point de serrage (K3) est formé par le cylindre de sortie supérieur (10) et l'élément de tamisage (22), caractérisé en ce que le tube d'aspiration (21) présente une ouverture d'aspiration (24) en forme de fente d'une longueur (L) de 2,0 mm à 5,0 mm, qui est disposée dans la zone de mise en faisceau de fibres (20), dans lequel l'ouverture d'aspiration (24) en forme de fente est disposée dans le tube d'aspiration (21), depuis une extrémité du tube d'aspiration (21) faisant face au deuxième point de serrage (K2) en direction du troisième point de serrage (K3), dans lequel une distance (B) entre le deuxième point de serrage (K2) et le troisième point de serrage (K3) le long d'une surface du cylindre de sortie supérieur (10) est telle que les fibres individuelles de l'ensemble de fibres (1) prévu pour l'étirage sont saisies par le troisième point de serrage (K3) avant de quitter le deuxième point de serrage (K2) et dans lequel les extrémités de fibres écartées de l'ensemble de fibres (1) sont appliquées contre l'ensemble de fibres (1) lors du passage sur l'ouverture d'aspiration (24).
  2. Dispositif d'étirage (2) selon la revendication 1, caractérisé en ce que l'ouverture d'aspiration (24) est disposée dans une surface plane du tube d'aspiration (21) dans la zone de mise en faisceau de fibres (20).
  3. Dispositif d'étirage (2) selon la revendication 1, caractérisé en ce que l'ouverture d'aspiration (24) est disposée dans une surface courbée du tube d'aspiration (21) dans la zone de mise en faisceau de fibres (20), dans lequel la courbure est inférieure à 0,04 1/mm.
  4. Dispositif d'étirage (2) selon la revendication 2, caractérisé en ce que la surface plane du tube d'aspiration (21) est inclinée par rapport à une perpendiculaire au sens de défilement (3) d'un angle (α) de 45° à 75° par rapport au plan de champ d'étirage (4).
  5. Dispositif d'étirage (2) selon la revendication 3, caractérisé en ce qu'une tangente dans le troisième point de serrage (K3) à la surface courbée du tube d'aspiration (21) est inclinée par rapport à une perpendiculaire au sens de défilement (3) d'un angle (α) de 45° à 75° par rapport au plan de champ d'étirage (4).
  6. Dispositif d'étirage (2) selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce qu'une distance radiale (C) entre le cylindre de sortie inférieur (11) et l'élément de tamisage (22) adjacent au tube d'aspiration (21) est de 0,4 mm à 2,0 mm.
  7. Dispositif d'étirage (2) selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que l'ouverture d'aspiration (24) en forme de fente est disposée de manière inclinée par rapport à la direction de défilement (3) sur une étendue longitudinale comprise dans une plage de ± 15 degrés d'angle.
  8. Dispositif d'étirage (2) selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que le tube d'aspiration (21) fait saillie de moins de 5 mm au-dessus du troisième point de serrage (K3) dans un sens de défilement de l'élément de tamisage (22).
  9. Dispositif d'étirage (2) selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que le cylindre de sortie supérieur (10) présente un rideau (A) par rapport au cylindre de sortie inférieur (11) dans le plan de champ d'étirage (4), vu dans le sens de défilement.
  10. Dispositif d'étirage (2) selon la revendication 9, caractérisé en ce que le rideau (A), mesuré dans le plan de champ d'étirage (4), est compris entre 2 mm et 15 mm et/ou le rapport entre le diamètre (E) du cylindre de sortie supérieur (10) et le diamètre (F) du cylindre de sortie inférieur (11) est compris entre 1,4 et 2,5.
  11. Métier à filer à anneaux, caractérisé en ce qu'il est prévu au moins un dispositif d'étirage (2) selon l'une quelconque des revendications 1 à 10.
  12. Procédé pour le compactage d'un ensemble de fibres (1) composé de fibres individuelles dans un dispositif d'étirage d'une machine à filer comportant au moins une première paire de cylindres (6) composée d'un cylindre supérieur (7) et d'un cylindre inférieur (8), et avec une deuxième paire de cylindres (9) composée d'un cylindre de sortie supérieur (10) et d'un cylindre de sortie inférieur (11), dans lequel un premier point de serrage (K1) est défini par la première paire de cylindres (6) et un deuxième point de serrage (K2) est défini par la deuxième paire de cylindres (9), et le premier point de serrage (K1) et le deuxième point de serrage (K2) forment un plan de champ d'étirage (4) qui est parcouru par l'ensemble de fibres (1) dans un sens de défilement (3) du premier point de serrage (K1) au deuxième point de serrage (K2), et avec une zone de compactage de fibres disposée en aval de la paire de cylindres de sortie (9) pour le compactage de l'ensemble de fibres étiré, qui présente un dispositif de compactage pneumatique avec une zone de mise en faisceau de fibres (20) et avec un tube d'aspiration (21) entouré par un élément de tamisage (22), pouvant être aspiré et comportant une ouverture d'aspiration (24), dans lequel la zone de mise en faisceau de fibres (20) est limitée par le deuxième point de serrage (K2) et un troisième point de serrage (K3), dans lequel le troisième point de serrage (K3) est formé par le cylindre de sortie supérieur (10) et l'élément de tamisage (22), caractérisé en ce que le tube d'aspiration (21) présente une ouverture d'aspiration (24) en forme de fente d'une longueur (L) de 2,0 mm à 5,0 mm, et l'ensemble de fibres (1), après le deuxième point de serrage (K2), est acheminé par l'élément de tamisage (22) via l'ouverture d'aspiration (24) vers le troisième point de serrage (K3) et en ce que les fibres individuelles sont saisies par le troisième point de serrage (K3) avant de quitter le deuxième point de serrage (K2), dans lequel des extrémités de fibres écartées de l'ensemble de fibres (1) sont appliquées contre l'ensemble de fibres (1) lors du passage sur l'ouverture d'aspiration (24).
  13. Procédé selon la revendication 12, caractérisé en ce que la majeure partie des fibres ne sont pas transportées sans serrage par l'élément de tamisage (22) du deuxième point de serrage (K2) au troisième point de serrage (K3).
  14. Procédé selon la revendication 12 ou 13, caractérisé en ce que , grâce à une inclinaison (α) de l'élément de tamisage (22) dans le sens opposé au sens de défilement (3), vu contre le plan de champ d'étirage (4), les extrémités des fibres, après avoir quitté le deuxième point de serrage (K2), se déplacent à travers l'espace libre dans la zone de mise en faisceau des fibres (20) avant de rencontrer l'élément de tamisage (22).
EP18815979.2A 2017-12-15 2018-12-03 Banc d'étirage pour machine à filer ayant un dispositif de compactage et procédé de compactage d'un ruban de fibres Active EP3724385B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01530/17A CH714447A1 (de) 2017-12-15 2017-12-15 Streckwerk für eine Spinnmaschine mit einer Verdichtungsvorrichtung und Verfahren zur Verdichtung eines Faserverbandes.
PCT/EP2018/083350 WO2019115270A1 (fr) 2017-12-15 2018-12-03 Banc d'étirage pour machine a filer ayant un dispositif de serrage et procédé de serrage d'une structure fibreuse

Publications (2)

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EP3724385A1 EP3724385A1 (fr) 2020-10-21
EP3724385B1 true EP3724385B1 (fr) 2023-01-25

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EP18815979.2A Active EP3724385B1 (fr) 2017-12-15 2018-12-03 Banc d'étirage pour machine à filer ayant un dispositif de compactage et procédé de compactage d'un ruban de fibres

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EP (1) EP3724385B1 (fr)
CN (1) CN111479961B (fr)
CH (1) CH714447A1 (fr)
WO (1) WO2019115270A1 (fr)

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BE488740A (fr) * 1948-06-28
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CN101191262A (zh) * 2006-11-18 2008-06-04 陆节 新型双纤维紧密纺装置
CN101476182B (zh) * 2009-01-20 2011-01-19 晋中开发区贝斯特机械制造有限公司 独立异形管负压式紧密纺装置
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CN102517714A (zh) * 2011-12-15 2012-06-27 江南大学 一种低捻高强纺纱装置
CN102965773B (zh) * 2012-12-21 2015-12-02 福建省金泰纺织有限公司 一种光洁纱线的纺纱装置及其用途

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CH714447A1 (de) 2019-06-28
CN111479961A (zh) 2020-07-31
EP3724385A1 (fr) 2020-10-21
WO2019115270A1 (fr) 2019-06-20

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