EP0019562B1 - Vorrichtung, die es erlaubt mindestens einem bewegenden Garn einen Friktionsfalschdrall zu übermitteln - Google Patents

Vorrichtung, die es erlaubt mindestens einem bewegenden Garn einen Friktionsfalschdrall zu übermitteln Download PDF

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Publication number
EP0019562B1
EP0019562B1 EP80420049A EP80420049A EP0019562B1 EP 0019562 B1 EP0019562 B1 EP 0019562B1 EP 80420049 A EP80420049 A EP 80420049A EP 80420049 A EP80420049 A EP 80420049A EP 0019562 B1 EP0019562 B1 EP 0019562B1
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EP
European Patent Office
Prior art keywords
belts
yarn
fact
twist
hand
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Expired
Application number
EP80420049A
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English (en)
French (fr)
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EP0019562A1 (de
Inventor
Jean-Louis Faure
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Dite Asa Sa SA Ste
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Dite Asa Sa SA Ste
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Publication date
Application filed by Dite Asa Sa SA Ste filed Critical Dite Asa Sa SA Ste
Publication of EP0019562A1 publication Critical patent/EP0019562A1/de
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Publication of EP0019562B1 publication Critical patent/EP0019562B1/de
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/085—Rollers or other friction causing elements between crossed belts

Definitions

  • the present invention relates to an improved device for communicating a false torsion by friction to at least one moving wire.
  • This technique consists, in general, of putting the moving wire in contact with a mobile surface moving transversely relative to the path of said wire, so that the latter is twisted upstream and regains its initial twist downstream .
  • This technique for which many applications have been envisaged, is mainly used to date for texturing chemical yarns, that is to say for imparting voluminosity and elasticity to them, thanks to a heat treatment followed by 'A cooling of the wire upstream of the false twist member.
  • this false twist device has the advantage of being able to operate at relatively low speeds, it has the disadvantage that it is necessary, where the belts cross, to drive them exactly along parallel planes and keep them at a distance from each other slightly less than the thickness of the wire that you want to provide a false twist.
  • the aforementioned patent proposes to replace these belts by two hyperboloids driven in rotation, the crossing angles between the axis of these hyperboloids and the generating lines being equal and having an amplitude of 30 ° to 45 °, the wire passing between them along a straight line crossing both of the axes of the hyperboloids at equal angles.
  • the contact surface of the two hyperboloids being a straight line, it is practically impossible to hold the wire along this straight line, which therefore results in a variable action of the hyperboloids.
  • an improved device for communicating a false torsion by friction to a moving wire by means of endless belts which has the advantages of this type proposed previously, and which, moreover, overcomes the disadvantages, in particular by the fact that it has a reduced bulk, makes it possible to ensure mutual contact between the two belts in a much more precise manner.
  • the invention relates to a device making it possible to communicate a false torsion by friction to a moving wire of the type described in FR-A-1 076 599 and 2317391 comprising two endless belts, inclined one by relative to each other, mounted on two pairs of rollers and having two strands in mutual contact, the wire passing between these belts in the area where they are in contact so that, on the one hand, they impart a false twist to it , and on the other hand, tend to deliver it, the device according to the invention being characterized in that the diameters and the positioning of said rollers with respect to each other are such that one of the belts passes to the inside each other.
  • the device according to the invention is associated on the one hand with means making it possible to deliver at least one wire between the two belts, as well as to means making it possible to return the treated wire.
  • any known means allowing either to thermally treat the wire upstream and / or downstream of said device, for example when it is desired to produce a textured wire, a retracted wire, etc., or to vary the wire flow rate and / or the length of the twist rise upstream of said device, when it is desired to obtain a wire having an alternating twist along its length.
  • the two belts can however be mounted on identical guide and drive rollers, so that the two strands are in mutual contact.
  • the guide rollers by varying the diameter of the guide rollers, it is possible to vary the contact pressure between the two belts, and consequently to modify the torsion communicated by the latter. It is also possible to provide means making it possible to orient the rollers axially with respect to one another in order to center each belt correctly on said rollers. Furthermore, if the guide rollers can have a cylindrical section, they can possibly be curved.
  • the guide rollers are preferably arranged in the same plane, but it could be envisaged to offset them relative to each other, so that the strands in contact with the two belts are wrapped mutually.
  • the introduction of the wire or wires between the belts can be done either in the same plane as their contact plane, or possibly, by having a different angle at the inlet and at the outlet of said belts.
  • the device according to the invention is perfectly suitable, in a variant, for obtaining self-twisted wires, said device then being in this case associated, on the one hand, with guides making it possible to bring at least two parallel wires between the contact surfaces of the two belts, and on the other hand, downstream, to a guide making it possible to join the two wires thus treated.
  • means are associated with the belts so that they can communicate to at least one of the wires an alternating twist along its length, these means possibly being of the type described in US-A patent. 3415048, that is to say that they make it possible to vary the length of the twist rise communicated by the spindle according to the invention.
  • the two belts will form an angle between them as a function of the twist that you want to communicate with the wire.
  • this angle which is defined by the angle between the two straight lines defining the direction of movement of the belts will preferably be greater than 90 °. It has been found that an angle close to 130 ° is perfectly suitable when it is desired to produce, using the device according to the invention, alternately twisted threads joined downstream of the belts by self-twisting, while an angle close to 150 ° is particularly suitable for communicating a false twist to the wire.
  • the device As can be seen in Figure 1, the device according to the invention. Consists essentially of two endless belts 1, 2, the upper strands 3, 4 are in mutual contact and are inclined with respect to the other. In this case, these belts form an angle of 130 ° between them. According to the invention, these belts are mounted on drive and guide rollers 5, 6, 7 and 8, positioned relative to each other, so that one of the belts (belt 2) passes to inside the other (strap 3). The drive and guide rollers 5, 6, 7 and 8 are rotated by means not shown and are arranged in a conventional manner on a support housing integral with the frame.
  • the tension of the two belts is obtained by subjecting one of the rollers (rollers 5 and 7) supporting each of the belts, to the action of springs 21, 25.
  • These springs have a point fixed 22, 26 and act on arms 20, 24 mounted at the end of articulation axes 23, 27.
  • These axes can be mounted themselves so as to be able to adjust their orientation in a plane parallel to the axis guide rollers 5, 6, 7, 8 in order to have correct positioning of the belts on said rollers.
  • the tension of the belt 1 or 2 is obtained by providing between the two rollers 5 or 7, and 6 or 8, a connection assembly produced in two parts and subjected to the action of a spring 30 exerting pressure on the rollers by means of a sliding part 31.
  • this Figure 4 illustrates the principle of realization of such a device but, in reality, it is necessary that the assemblies for adjusting the tension of the belts are made in such a way that the latter can pass one inside the 'other. For example, it suffices to make the two tensioning assemblies for each belt so that they have a thickness less than half the spacing between the belts so that they can be arranged one above the other.
  • the wire 9 coming from a power source not shown is delivered, by any appropriate means, such as a deliverer 10, between these two belts to then be returned or undergo a conventional complementary treatment.
  • the device is applied to the texturing of a thread 9, and therefore comprises, between the deliverer 10 which serves as a torsion blocking member, a heat treatment oven 11 as well that a cooling zone 12.
  • the wire receives during its passage between the belts 1 and 2, a twist which goes up in the oven and at its exit, finds its initial twist.
  • such a device can also be used to communicate an alternating twist to two wires 16, 17 in movement, these two wires being joined together by autotorsion at the output of the device.
  • upstream and downstream of the belts, in the direction of passage of the wires there are guides 13, 14 and 18, 19.
  • the guides 13, 14 and 18, 19 make it possible to hold the two wires 16, 17 to be treated in parallel during the passage between the two belts 1 and 2, the guide 15 making it possible to collect them at the outlet of the device.
  • the alternating torsion is communicated to the wire in a conventional manner, either by varying the speed of delivery of the wires, or, preferably, by varying the length of the torsional ascent upstream of the device. of false twist.
  • a device consisting of two endless belts 1 and 2, having a length of 28 cm, and mounted on rollers 5, 6, 7 and 8, having a diameter of 2.5 cm.
  • the width of the straps is 1.5 cm.
  • These belts are driven at a speed of 550 meters per minute and the two strands of the belt 1 are in contact with those of the belt 3, the angle formed between the two belts being 150 °.
  • the twist communicated to the upstream wire and which goes up to the deliverer 10 is of the order of 2,400 turns per meter.
  • a textured yarn is obtained in this way having characteristics comparable to textured yarns by means of pins with internal friction and which in certain cases can be considered to be improved by the fact that the belts not only impart a twist to the yarn but also promote its progression.
  • the spacing between the two wires is set to 10 millimeters.
  • a guide 15 provided at the outlet of the two belts and means not shown make it possible to vary the rise in torsion upstream of the device so that for 0.65 seconds, this rise takes place over a distance of 27 centimeters. and that, for 0.65 seconds, it takes place over a distance of 5 centimeters.
  • two threads 16, 17 are delivered, each consisting of a core formed by a polyester thread textured by false twist of 167 decitex, 33 strands, covered with wool of 20 microns, the total title of each elementary thread being 250 decitex.
  • the two wires are delivered at a speed of 205 meters per minute.
  • the two belts rotate at the same speed as in example 1.
  • such a device is not limited to the exemplary embodiments given above, but also covers all the variants thereof.
  • the invention has been described for a device in which the belts are of rectangular section, belts having sections of any other shape could be used, for example belts of circular section, or even belts formed by a plurality of elementary belts placed side by side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Claims (10)

1. Vorrichtung zur Erteilung eines Falschdralls durch Reibung an mindestens einen bewegten Faden, mit schräg zueinanderstehenden, auf zwei Walzenpaaren (5-6) und (7-8) angeordneten Endlosriemen (1-2) mit zwei sich gegenseitig berührenden Trumen, wobei der Faden (9) zwischen diesen Riemen in der Zone, wo sie sich berühren, hindurchläuft, derart, daß sie ihm einerseits einen Falschdrall erteilen und andererseits die Tendenz haben, ihn abzuliefern, dadurch gekennzeichnet, daß die Durchmesser und die Positionierung der einen Walzen in bezug auf die anderen derart sind, daß der eine Riemen (2) im Inneren des anderen (1) läuft.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sie einerseits mit Mitteln (10) zum Liefern von mindestens einem Faden zwischen die beiden Riemen (1-2) und andererseits mit Mitteln zum Aufwickeln des behandelten Fadens versehen ist.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie mit Mitteln (11) zur thermischen Behandlung des Fadens (9) versehen ist.
4. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie mit Mitteln versehen ist, die ein Verändern des Fadenausstoßes und/oder der eingangsseitigen Aufsteigelänge des Falschdralls derart ermöglichen, daß der erzeugte Faden eine über seine Länge alternierende Drehung aufweist.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die beiden Riemen (1-2) auf identischen Führungs- und Antriebswalzen (5-6) und (7-8) derart angeordnet sind, daß die beiden Trume der beiden Riemen sich gegenseitig berühren.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Einführung des oder der Fäden zwischen die Riemen in derselben Ebene erfolgt, in der ihre Berührungsfläche liegt.
7. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Einführung des oder der Fäden zwischen die Riemen unter einem Winkel erfolgt, der verschieden ist von dem Winkel am Austritt aus den Riemen.
8. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß sie einerseits mit Fadenführern (13)-(14)-(18)-(19) versehen ist zum Einbringen von mindestens zwei parallelen Fäden (16)-(17) zwischen die sich berührenden Oberflächen der Riemen (1)-(2) und andererseits, dahinter, mit einem Fadenführer (15) versehen ist, der die Vereinigung der beiden behandelten Fäden durch Selftwisten ermöglicht.
9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der von den die Richtungen der beiden Riemen definierenden Geraden gebildete Winkel verschieden von 90° ist und vorteilhafterweise zwischen 130 und 150° liegt.
10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Riemen auf Rollen montiert sind, die mit Mitteln (30)-(31) zur Regelung ihrer Spannung versehen sind.
EP80420049A 1979-05-22 1980-04-28 Vorrichtung, die es erlaubt mindestens einem bewegenden Garn einen Friktionsfalschdrall zu übermitteln Expired EP0019562B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7913915 1979-05-22
FR7913915A FR2457333A1 (fr) 1979-05-22 1979-05-22 Dispositif permettant de communiquer une fausse torsion par friction a au moins un fil en mouvement

Publications (2)

Publication Number Publication Date
EP0019562A1 EP0019562A1 (de) 1980-11-26
EP0019562B1 true EP0019562B1 (de) 1983-12-07

Family

ID=9226060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80420049A Expired EP0019562B1 (de) 1979-05-22 1980-04-28 Vorrichtung, die es erlaubt mindestens einem bewegenden Garn einen Friktionsfalschdrall zu übermitteln

Country Status (6)

Country Link
US (1) US4296598A (de)
EP (1) EP0019562B1 (de)
JP (1) JPS55158346A (de)
AU (1) AU532413B2 (de)
DE (1) DE3065807D1 (de)
FR (1) FR2457333A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408448A (en) * 1980-09-08 1983-10-11 Barmag Barmer Maschinenfabrik Ag Yarn false twisting method and apparatus
US4384494A (en) * 1981-08-24 1983-05-24 Milliken Research Corporation Belt tension detector
US4538409A (en) * 1982-10-12 1985-09-03 Rieter-Scragg Limited Crossed belt false twist devices
US4567721A (en) * 1983-11-01 1986-02-04 Teijin Limited Method for producing textured yarn
DE3577582D1 (de) * 1984-09-21 1990-06-13 Nat Res Dev Spinnen von garn.
US4698959A (en) * 1985-08-07 1987-10-13 Barmag Ag Apparatus for twisting multifilament yarn
FR2619831B1 (fr) * 1987-08-28 1989-11-24 Devtex Dispositif permettant de communiquer une fausse torsion par friction a au moins un fil en mouvement
JPH01139829A (ja) * 1987-11-19 1989-06-01 Murata Mach Ltd ベルト式仮撚装置
US4936087A (en) * 1987-11-19 1990-06-26 Murata Kikai Kabushiki Kaisha Belt type false twisting device
JP2580316B2 (ja) * 1989-02-13 1997-02-12 村田機械株式会社 糸の仮撚方法及びその仮撚装置
JPH03146729A (ja) * 1990-09-22 1991-06-21 Murata Mach Ltd ベルト式仮撚装置
CN103498218B (zh) * 2013-10-15 2016-02-24 无锡宏源机电科技股份有限公司 一种斜置式龙带传动装置
DE102014108194A1 (de) * 2014-06-11 2015-12-17 Maschinenfabrik Rieter Ag Spinnmaschine und Falschdralleinrichtung
CN106435860B (zh) * 2016-12-01 2019-02-22 东华大学 一种在赛络纺中进行单纱预加捻的加工装置及方法
CN115434053B (zh) * 2022-08-24 2024-04-19 山东岱银纺织集团股份有限公司 一种提高纱线蓬松度的装置及其使用方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB986245A (en) * 1963-03-22 1965-03-17 British Nylon Spinners Ltd Improvements in or relating to the production of yarns with varying twist
US3415048A (en) * 1965-04-07 1968-12-10 Rhodiaceta Ag Process for producing alternating twist
US3659408A (en) * 1970-03-13 1972-05-02 Anaconda Wire & Cable Co Stranding apparatus
US4047373A (en) * 1975-06-24 1977-09-13 Oda Gosen Kogyo Kabushiki Kaisha False-twisting method and apparatus for producing crimped filament yarns
JPS5922125Y2 (ja) * 1976-12-14 1984-07-02 村田機械株式会社 仮撚装置におけるベルトのニツプ圧設定装置
US4144700A (en) * 1976-12-14 1979-03-20 Murata Kikai Kabushiki Kaisha False twisting apparatus
JPS5545849A (en) * 1978-09-27 1980-03-31 Oda Gosen Kogyo Kk False twisting method and apparatus
US4218870A (en) * 1978-12-18 1980-08-26 Milliken Research Corporation False twist machine

Also Published As

Publication number Publication date
EP0019562A1 (de) 1980-11-26
JPS55158346A (en) 1980-12-09
US4296598A (en) 1981-10-27
AU5831280A (en) 1980-11-27
FR2457333A1 (fr) 1980-12-19
FR2457333B1 (de) 1982-01-22
DE3065807D1 (en) 1984-01-12
AU532413B2 (en) 1983-09-29

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