EP0489225B1 - Broche à retordre à double torsion avec dispositif d'enfilage pneumatique - Google Patents

Broche à retordre à double torsion avec dispositif d'enfilage pneumatique Download PDF

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Publication number
EP0489225B1
EP0489225B1 EP91110296A EP91110296A EP0489225B1 EP 0489225 B1 EP0489225 B1 EP 0489225B1 EP 91110296 A EP91110296 A EP 91110296A EP 91110296 A EP91110296 A EP 91110296A EP 0489225 B1 EP0489225 B1 EP 0489225B1
Authority
EP
European Patent Office
Prior art keywords
thread
guide surface
guide channel
twisting spindle
horizontal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91110296A
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German (de)
English (en)
Other versions
EP0489225A1 (fr
Inventor
Frank Dipl.-Ing. Butzke
Heinz Dipl.-Ing. Fink
Wolfgang Dipl.-Ing. Leupers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Palitex Project Co GmbH
Original Assignee
Palitex Project Co GmbH
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Filing date
Publication date
Application filed by Palitex Project Co GmbH filed Critical Palitex Project Co GmbH
Publication of EP0489225A1 publication Critical patent/EP0489225A1/fr
Application granted granted Critical
Publication of EP0489225B1 publication Critical patent/EP0489225B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/007—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for two-for-one twisting machines
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/86—Multiple-twist arrangements, e.g. two-for-one twisting devices ; Threading of yarn; Devices in hollow spindles for imparting false twist
    • D01H7/868—Yarn guiding means, e.g. guiding tubes

Definitions

  • the invention relates to a double-wire twisting spindle with a compressed air-operated threading device with the features from the preamble of patent claims 1 or 6.
  • Such a double-wire twisting spindle is described in EP 00 26 159 B1.
  • the compressed air stream emerging from the thread guide channel, which carries the thread end is guided against a deflection plate.
  • This baffle is fixed to the turntable of the spindle or optionally adjustable on the spindle, at a point between the circular arc described by the outer opening of the thread guide channel and the outermost edge of the turntable. It is designed and aligned so that its upper end is at least at the level of the central axis of the outer opening of the thread guide channel, and the extension of its front surface is substantially tangent to the second guide surface which is curved convexly upwards.
  • the known device has the disadvantage that the baffle plate must either be arranged around the entire turntable or a positionally accurate shutdown of the outer opening of the thread guide channel relative to the baffle plate or an adjustment possibility of the baffle plate is necessary to enable the threading process. This is complex and particularly unfavorable for automatic threading.
  • the invention has for its object to provide a double wire twisting spindle with the above. To design features so that an automatic threading of the thread is possible without the arrangement of a baffle plate fixed relative to the rotatable parts of the spindle.
  • the invention is based on the knowledge that the use of the Coanda effect on a double-wire twisting spindle for deflecting the thread emerging from the thread guide channel without arranging one fixed baffle is possible and can only be achieved by measures on the spindle rotor.
  • a prerequisite for this is that the expansion of the compressed air jet in a direction perpendicular to the guide surface is kept as small as possible.
  • both the influencing variables for the secure attachment of the air jet to the convexly curved second guide surface and also the features of the spindle rotor of a double-wire twisting spindle specified in terms of textile technology must be taken into account.
  • the design of the double-wire twisting spindle according to the invention has the advantage that it is not necessary to stop the spindle rotor in a precise position and no deflecting plates that tend to become dirty are required.
  • the double-wire twisting spindle consists of the whorl 1, the turntable 2 with thread storage disk 3 and the protective pot 5, in which a delivery spool Sp is inserted.
  • the protective pot sits from the protective pot jacket 6, the protective pot base 4 and the protective pot hollow hub 7 together.
  • the protective pot 5 is placed on the spindle rotor 24 with the interposition of bearings 22, 23.
  • the protective pot base 4 is provided with a radially extending channel 10.
  • the outer mouth of the channel 10 is opposite an opening 13.1 in the balloon limiter 13.
  • a connector 11, which is connected to a compressed air source (not shown), can be inserted through the opening 13.1 in order to pressurize the channel 10 with compressed air.
  • a chamber 9 adjoins the inner end of the channel 10, in which an injector nozzle 25 is arranged in the inlet opening of a thread guide channel 12 guided through the spindle rotor 24.
  • a thread brake 8 is arranged in the protective pot hollow hub 7 above the injector nozzle 25 in the usual way.
  • the connecting piece 11 is connected to the channel 10, so that compressed air passes through the channel 10 and the chamber 9 to the injector nozzle 25.
  • the suction flow generated in this way causes the thread F held at the upper end of the thread inlet tube 26 to be sucked in and, after passing through the thread brake 8 and the injector nozzle 25, to be conveyed by the compressed air jet through the thread guide channel 12 until it emerges from the outer opening 12.2 of the radial one in the thread storage disc 3 extending part 12.1 of the thread guide channel 12 emerges.
  • the turntable 2 On its underside, the turntable 2 has, at least in the area of the outer opening 12.2 of the thread guide channel 12, a first guide surface 14 adjoining this opening 12.2, to which a second guide surface 15 curved convexly upwards is connected.
  • the beam should be guided along these two guide surfaces and deflected upwards in such a way that the angle ⁇ between the vertical and the thread is as small as possible.
  • R is chosen to be as large as possible and h as small as possible.
  • R cannot become arbitrarily large, because on the one hand the thread detaching from the turntable 2 should have a defined run-off point before entering the thread balloon and on the other hand the height of the thread balloon should be as small as possible.
  • the size h cannot be made arbitrarily small be, since a safe passage of the thread in the compressed air flow through the outer opening 12.2 of the thread guide channel and a trouble-free construction of the storage on the circumference of the thread storage disk 3 must be ensured in particular at a storage angle of more than 360 o . For this it is necessary that the thread runs into the first loop at the lowest point of the thread storage disc groove and that the second turn of the storage is placed on the thread storage disc at a sufficient distance above the first thread system. A disturbance of these conditions can lead to a thread break.
  • angles ⁇ 1 and ⁇ 2 should be large in order to achieve a favorable direction of the compressed air jet.
  • An increase in the angle is opposed by economic reasons that are related to the filling volume of the spindle. It would then either have to reduce the diameter of the protective pot 5 while maintaining the height or be designed higher while maintaining the diameter, which should be avoided.
  • the tangent T on the downstream side of the second Guide surface 15 should run as vertically as possible.
  • the curved second guide surface 15 can be connected to the first guide surface 14 in such a way that the first guide surface 14 coincides with the tangential plane to the second guide surface 15 at the connection point of the two guide surfaces. But this is by no means mandatory. It has been found that it can be advantageous if the first guide surface 14 encloses a predetermined angle with this tangential plane.
  • the geometric conditions to be observed here are explained below with reference to FIGS. 2a and 2b. To describe the geometric conditions, in addition to the angle of rise ⁇ 2 of the first guide surface 14 to the horizontal, the angle ⁇ which the tangential plane TE forms with the second guide surface 15 at the connection point A of the first guide surface 14 to the second guide surface 15 with the horizontal. As can be seen from FIGS.
  • the tangential plane TE may rise (FIG. 2a) or decrease with respect to the horizontal (FIG. 2b).
  • FIGs 2a and 2b the relationships are shown with the aid of a coordinate system, the origin of which lies in the connection point A of the first guide surface 14 to the second guide surface 15, the x-axis horizontally to the right in the drawings and the y-axis vertically in the drawings runs upwards.
  • the coordinate system is indicated by dash-dotted lines.
  • the center of curvature of the second guide surface 15 is designated KM.
  • a tangential plane TE increasing with respect to the horizontal x means an angle ⁇ which is positively counted in the coordinate system in the counterclockwise direction. The following applies: 0 ⁇ ⁇ + 90 °.
  • a falling tangent plane means an angle ⁇ negatively counted clockwise in the coordinate system and the following should apply here -90 ° ⁇ ⁇ 0.
  • the compressed air jet moving along the first guide surface 14 is guided along the second guide surface 15 under the effect of the Coanda effect.
  • FIGS. 4 to 8 A number of exemplary embodiments are described below with reference to FIGS. 4 to 8, in each of which the extent h of the compressed air jet is influenced in the vertical direction in different ways.
  • the size h is given by the vertical width of the outer opening 12.2 of the thread guide channel. Since, as already explained above, this opening width cannot be made arbitrarily small, a wedge spoiler will be placed on the lower wall of the end section 12.1 of the thread guide channel in the region of the outer opening 12.2 in this exemplary embodiment in order to reduce the value h. This is shown in Figures 4 to 6.
  • a wedge spoiler 16 is used which extends in the horizontal direction only over a central area of the outer opening 12.2.
  • the wedge spoiler 17 viewed in the flow direction, is arranged in front of the outer opening 12.2.
  • FIG. 6 shows a possible profile of the wedge spoiler 16 in a vertical plane.
  • the wedge spoiler has a profile that initially rises linearly in the outflow direction and then curves upward in a concave manner.
  • the shape of the wedge spoiler reduces the jet height and achieves a smaller effective value of h.
  • a spoiler in the form of a ring segment 18 is arranged immediately after the outer opening 12.2 of the thread guide channel, which is directed upwards and can, for example, have a profile that curves concavely upwards.
  • the ring segment spoilers 18 or 19 can extend over part of the circumference of the storage disc or as a full ring over the entire circumference of the storage disc 3.
  • FIG. 9 A further measure is shown in FIG. 9 in order to achieve a particularly effective beam deflection.
  • a vertically upward baffle plate 20 is arranged in the outer opening 12.2 of the end section 12.1 of the thread guide channel at the lower exit edge and extends over a predetermined part of the width and the height of the outer opening 12.2.
  • the sharp edge of this baffle causes a strong constriction of the compressed air jet directed upwards and thus a reduction in the effective value of size h which exceeds dimension "a".
  • the free course of the thread in the thread storage disc groove over the circumference of the thread storage disc is ensured in this embodiment.

Landscapes

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

Claims (12)

  1. Retordeuse à double torsion avec un dispositif d'enfilage actionné à l'air comprimé, au moyen duquel le fil est transporté par un jet d'air comprimé, à travers le canal de guidage de fil du disque de stockage de fil du disque de stockage de fil, une première surface de guidage, disposée en face inférieure du plateau rotatif situé au-dessus du disque de stockage de fil et qui se transforme en une deuxième surface de guidage à incurvation convexe orientée vers le haut, se raccordant à l'ouverture extérieure du canal de guidage de fil, caractérisée par le fait que le jet d'air comprimé (D) sortant de l'ouverture extérieure (12.2) du canal de guidage de fil (12) a, en direction verticale, une étendue h telle, et le rayon de courbure R de la deuxième surface de guidage (15) étant de valeur telle que, pour le rapport entre le rayon de courbure R et la dimension du jet h, on a : R/h ≥ 3, par le fait que pour l'angle de montée β1 de la paroi supérieure de l'extrémité extérieure (12.1) du canal de guidage de fil (12) par rapport à l'horizontale et l'angle de montée β2 de la première surface de guidage (14) par rapport à l'horizontale, on a la relation β1 > β2, et par le fait que l'étendue h du jet d'air comprimé (D) en direction verticale est déterminée par l'effet d'un déflecteur cunéiforme (16, 17) disposé sur la paroi inférieure du canal de guidage de fil (12) avant son extrémité extérieure (12.2) et montant vers l'extérieur.
  2. Retordeuse à double torsion selon la revendication 1, caractérisée par le fait que le déflecteur cunéiforme (16) présente, dans la direction de sortie d'écoulement, un profil qui est d'abord montant de façon linéaire, puis incurvé vers le haut de façon concave.
  3. Retordeuse à double torsion selon les revendications 1 ou 2, caractérisée par le fait que la largeur du déflecteur cunéiforme (16) est plus petite, d'une valeur prédéterminée, que la largeur du canal de guidage de fil (12.1).
  4. Retordeuse à double torsion selon l'une des revendications 1 à 3, caractérisée par le fait que l'extrémité extérieure du déflecteur cunéiforme (16) coïncide sensiblement avec l'ouverture extérieure (12.2) du canal de guidage de fil (12).
  5. Retordeuse à double torsion selon l'une des revendications 1 à 3, caractérisée par le fait que l'extrémité extérieure du déflecteur cunéiforme (17), observée dans la direction de sortie d'écoulement, est disposée devant l'ouverture extérieure (12.2) du canal de guidage de fil (12.1), l'avancée étant d'une distance prédéterminée.
  6. Retordeuse à double torsion avec un dispositif d'enfilage actionné à l'air comprimé, au moyen duquel le fil est passé, au moyen d'un jet d'air comprimé, à travers le canal de guidage de fil du disque de stockage de fil, une première surface de guidage, disposée en face inférieure du plateau rotatif situé au-dessus du disque de stockage de fil et se transformant en une deuxième surface de guidage à incurvation convexe orientée vers le haut, se raccordant à l'ouverture extérieure du canal de guidage de fil, caractérisée par le fait que le jet d'air comprimé (D) sortant de l'ouverture extérieure (12.2) du canal de guidage de fil (12) a une dimension h en direction verticale telle, et le rayon de courbure R de la deuxième surface de guidage (15) a une dimension telle, que, pour le rapport entre le rayon de courbure R et la dimension de jet h on a : R/h ≥ 3, et, pour l'angle de montée β1 de la paroi supérieure de l'extrémité extérieure (12.1) du canal de guidage de fil (12) par rapport à l'horizontale et l'angle de montée β de la première surface de guidage (14) par rapport à l'horizontale, on a la liaison β1 > β2, et par le fait que la dimension h du jet d'air comprimé (D) en direction verticale est déterminée par l'effet d'une tôle d'impact (20) disposée sensiblement dans l'ouverture extérieure (12.2) du canal de guidage (12.1) sur l'arête de sortie inférieure, orientée verticalement vers le haut, qui s'étend au moins sur une partie prédéterminée de la largeur du canal de guidage de fil et sur une partie prédéterminée de sa hauteur, tôle d'impact (20) dont l'allure du contour supérieur est délimitée par une arête vive.
  7. Retordeuse à double torsion selon la revendication 6, caractérisée par le fait que la relation valable pour la hauteur a de la tôle d'impact (20) est : 1 mm < a < 2 mm.
  8. Retordeuse à double torsion selon l'une des revendications 1 à 7, caractérisée par le fait que le rapport entre le rayon de courbure R et la dimension du jet h satisfait à l'inégalité : 3 mm ≤ R/h ≤ 5 mm.
  9. Retordeuse à double torsion selon la revendication 8, caractérisée par le fait que le rapport entre le rayon de courbure R et la dimension du jet h a au moins à peu près la valeur R/h=4.
  10. Retordeuse à double torsion selon l'une des revendications 1 à 9, caractérisée par le fait que la deuxième surface de guidage (15) a, sur son extrémité tournée vers le haut, une tangente (T) verticale.
  11. Retordeuse à double torsion selon l'une des revendications 1 à 10, caractérisée par le fait que l'angle de montée β2 de la première surface de guidage (14) par rapport à l'horizontale et l'angle à fait entre le plan tangentiel (TE) à la deuxième surface de guidage (15) au point de raccordement (A) de la première surface de guidage (14) à la deuxième surface de guidage (15) et l'horizontale, avec le plan tangentiel (TE) montant par rapport à l'horizontale et 0 < δ < +90°, on a l'inégalité à δ ≤ β2 ≤ +90°.
  12. Retordeuse à double torsion selon l'une des revendications 1 à 9, caractérisée par le fait que pour l'angle de montée β2 de la première surface de guidage (14) par rapport à l'horizontale et l'angle à entre le plan tangentiel (TE) à la deuxième surface de guidage (15) au point de raccordement (A) de la première surface de guidage (14) à la deuxième surface de guidage (15) et l'horizontale, lorsque le plan tangentiel (TE) descend par rapport à l'horizontale et que l'on a -90° ≤ δ ≤ 0, on a l'inégalité 0 ≤ β2 ≤ +90°.
EP91110296A 1990-11-29 1991-06-22 Broche à retordre à double torsion avec dispositif d'enfilage pneumatique Expired - Lifetime EP0489225B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4037951 1990-11-29
DE4037951 1990-11-29

Publications (2)

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EP0489225A1 EP0489225A1 (fr) 1992-06-10
EP0489225B1 true EP0489225B1 (fr) 1996-09-11

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EP91110296A Expired - Lifetime EP0489225B1 (fr) 1990-11-29 1991-06-22 Broche à retordre à double torsion avec dispositif d'enfilage pneumatique

Country Status (5)

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US (1) US5347805A (fr)
EP (1) EP0489225B1 (fr)
JP (1) JP3108164B2 (fr)
CZ (1) CZ280626B6 (fr)
DE (2) DE4120666A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004050180A1 (de) * 2004-10-14 2006-04-20 Saurer Gmbh & Co. Kg Doppeldraht-Zwirnspindel mit druckluftbetätigter Einfädelvorrichtung

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19500318A1 (de) * 1995-01-07 1996-07-11 Palitex Project Co Gmbh Verfahren zum Einfädeln der Fäden von zwei gleichachsig übereinander in eine Doppeldraht-Zwirnspindel einsetzbaren Vorlagespulen durch die zweigeteilte Spindelhohlachse
US5951006A (en) * 1998-05-22 1999-09-14 Xerox Corporation Modular air jet array with coanda exhausting for module decoupling
AU2006351884B2 (en) 2006-12-14 2011-08-11 Tronox Llc An Improved Jet for Use in a Jet Mill Micronizer
FR2937056A1 (fr) * 2008-10-13 2010-04-16 Ritm Dispositif et procede pour realiser l'enfilage d'un fil dans une broche a motorisation individuelle ou dans une motobroche de retordage et/ou de cablage direct.
WO2010063692A1 (fr) * 2008-12-01 2010-06-10 Oerlikon Textile Gmbh & Co. Kg Dispositif pour enrouler un faisceau de fibres alimenté en continu, et procédé pour placer un faisceau de fibres alimenté en continu dans un dispositif d'enroulement
CN105671708B (zh) * 2016-04-18 2018-08-03 安徽日发纺织机械有限公司 一种电锭气动锭子
DE102019105072A1 (de) * 2019-02-28 2020-09-03 Saurer Technologies GmbH & Co. KG Spulentopflagerung

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US4168605A (en) * 1977-12-28 1979-09-25 Officine Savio, S.P.A. Spindle for double twisting with pneumatic threading
IT1112159B (it) * 1979-02-02 1986-01-13 Ratti Spa Michele Fuso di torcitura a doppia torsione o di cablaggio
DE2923426A1 (de) * 1979-06-09 1980-12-18 Palitex Project Co Gmbh Fadenbremse fuer einen durch ein rohr hindurchlaufenden faden
DE2936649A1 (de) * 1979-09-11 1981-04-02 Saurer-Allma Gmbh, 8960 Kempten Doppeldrahtzwirnspindel mit druckluftbetaetigter einfaedelvorrichtung
IT7960457V0 (it) * 1979-09-24 1979-09-24 Savio Spa Deflettore per fuso per ritorcitoio a doppia torsione.
DE2939593C2 (de) * 1979-09-29 1982-11-04 Palitex Project-Company Gmbh, 4150 Krefeld Doppeldraht-Zwirnspindel mit druckluftbetätigter Einfädelvorrichtung
DE2939702C2 (de) * 1979-09-29 1982-08-12 Palitex Project-Company Gmbh, 4150 Krefeld Doppeldraht-Zwirnspindel mit einem ortsfest gehaltenen Lieferspulenträger
DE3118873C2 (de) * 1981-05-13 1985-01-03 Palitex Project-Company Gmbh, 4150 Krefeld Doppeldraht-Zwirnspindel
DE3310438C2 (de) * 1983-03-23 1985-04-04 Palitex Project-Company Gmbh, 4150 Krefeld Vorrichtung zur Veränderung des Durchmessers einer Ablaufhilfe für den Überkopfabzug eines auf eine Aufwickelspule aufzuwickelnden Fadens von einer Vorlagespule

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004050180A1 (de) * 2004-10-14 2006-04-20 Saurer Gmbh & Co. Kg Doppeldraht-Zwirnspindel mit druckluftbetätigter Einfädelvorrichtung

Also Published As

Publication number Publication date
EP0489225A1 (fr) 1992-06-10
US5347805A (en) 1994-09-20
DE4120666A1 (de) 1992-06-04
JP3108164B2 (ja) 2000-11-13
CZ280626B6 (cs) 1996-03-13
CS201291A3 (en) 1992-06-17
DE59108176D1 (de) 1996-10-17
JPH04263629A (ja) 1992-09-18

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