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EP0121602B1 - Dispositif de fausse-torsion - Google Patents

Dispositif de fausse-torsion Download PDF

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Publication number
EP0121602B1
EP0121602B1 EP83112879A EP83112879A EP0121602B1 EP 0121602 B1 EP0121602 B1 EP 0121602B1 EP 83112879 A EP83112879 A EP 83112879A EP 83112879 A EP83112879 A EP 83112879A EP 0121602 B1 EP0121602 B1 EP 0121602B1
Authority
EP
European Patent Office
Prior art keywords
false twist
air
expansion chamber
twist unit
yarn
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
Application number
EP83112879A
Other languages
German (de)
English (en)
Other versions
EP0121602A1 (fr
Inventor
Emil Briner
Richard Hieronymi
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Priority to AT83112879T priority Critical patent/ATE20253T1/de
Publication of EP0121602A1 publication Critical patent/EP0121602A1/fr
Application granted granted Critical
Publication of EP0121602B1 publication Critical patent/EP0121602B1/fr
Expired 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
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/92—Spinning or twisting arrangements for imparting transient twist, i.e. false twist
    • 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
    • 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
    • D01H1/115—Spinning by false-twisting using pneumatic means

Definitions

  • the disadvantage now is that the amount of air sucked in through the throttle point is insufficient to achieve an optimal air speed in the intake duct for the spinning process.
  • the air speed of the air which is required to suck in edge fibers which are wound around the yarn core in this spinning process should advantageously be at least higher than the feed speed of the yarn core.
  • Spinning should be understood to mean the introduction of the untwisted fiber sliver emitted by the pair of output rollers into the swirl device during the starting process.
  • the advantage of the invention can be seen in the fact that the expansion of the air volume after the narrowest point reduces the air speed essentially such that there is practically no disruption of the yarn or The fiber run is created by air currents transverse to the yarn run, so that the piecing is advantageously carried out with active suction.
  • This advantage has an impact on piecing as well as in operation by reducing fiber loss.
  • the false twist unit 1 comprises a suction part 4, a throttle point 5 and a swirl sensor 6.
  • the throttle point 5 and the swirl sensor 6 essentially correspond to the embodiment described in DE-B-2722319 (equivalent to GB-A-1578256).
  • the actual spinning process itself is known from the aforementioned exit document.
  • a belt B delivered by the pair of output rollers 2 is taken over by a tapered suction channel 7 belonging to the suction part 4 and sucked through the throttle point 5 due to the suction effect of the swirl sensor 6, and on the one hand set in rotation by the air flow of the swirl sensor and on the other hand conveyed in the thread running direction R '. Due to the rotation, a false twist builds up against the pair of output rollers 2 in the yarn core of the yarn 3. The wrapping fibers necessary for the finished yarn are drawn in with the air flow of the suction channel 7.
  • annular expansion space 9 is provided, with an air outlet 10, which is connected to a vacuum source 11.
  • the throttle point 5 connects directly to this expansion space 9.
  • the input diameter hopper 12 is advantageously larger than the diameter of the narrowest point 8 in order to make it easier for the sucked-in yarn 3 to thread into the hopper 12.
  • the purge air inlet 13 is advantageously radially opposite the air outlet 10, so that two substantially symmetrical, semicircular air flows are aimed at the air outlet 10, which prevent fiber parts from becoming stuck in the expansion space.
  • the amount of purge air required for this is selected continuously or in stages by means of the adjustable throttle valve 14.
  • annular bead The advantage of this annular bead is that the two aforementioned air flows strive towards the air outlet 10 in a semi-annular manner and thereby less disruptive air flows directed perpendicular to the thread run can arise, since the air emerging at the narrowest point 8 is essentially circular in the expansion space 9 through an annular air passage cross section 17 resulting between the annular bead 15 and the wall 16 bordering the narrowest point 8 'flows.
  • the false twist unit 1 1v of FIG. 5 corresponds to the variant of Fig. 3 with the difference that the bead 15 projects so far into the wall 16, that an intermediate formed air passage cross-section 21 has a smaller area than the narrowest point 8.
  • the difference may be very small, it suffices that the air resistance of the cross section 21 is greater than that of the narrowest point 8.
  • This measure has the advantage that it increasingly counteracts the tendency of fiber deposits in the expansion spaces 9 I , 9 II , 9 III and 9 IV shown in FIGS. 3-6.
  • FIGS. 8 and 9 Another measure for reducing or avoiding fiber deposits in the expansion space 9 to 9 IV is shown for the expansion space 9 with FIGS. 8 and 9.
  • the measure consists in that, as shown with the false twist unit 1 VI , the expansion space 9 is arranged eccentrically to the Garnachse (not shown) or to the Garniauf 3, that even at the point with the smallest amount of air according to the direction of flow, a sufficiently high air speed results to avoid fiber deposits.
  • FIGS. 10 to 13 are intended to show that non-annular expansion spaces can also be used.
  • FIG. 10 respectively. 11 shows a false twist unit 1 v "with a cylindrical expansion space 24 and an air outlet 25 connected to it.
  • the expansion space can also have a square, possibly rectangular or other-cornered cross section.
  • FIG. 13 Another variant is shown in FIG. 13 with the false twist unit 1 VIII , in which an expansion space 26 is provided which, as can be seen from FIG. 13, has an oval cross section. An air outlet 27 connected to it serves as a connection piece to a suction unit (not shown).
  • the cross-section can be shaped such that the air inlet cross-section (not shown), which is traversed by the air flowing from the narrowest point 8 into the expansion space 26, in a manner and function is designed, as shown and described with FIGS. 3 to 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Air Supply (AREA)
  • Detergent Compositions (AREA)

Claims (12)

1. Dispositif de fausse torsion (1 ),spécia!ement pour le filage à fausse torsion, comportant une partie d'aspiration (4) qui possède un canal d'aspiration s'amincissant (7), et, vu dans le sens de déplacement du fil (R), un poste d'étranglement (5) ainsi qu'un donneur de torsion (6), qui suivent la partie d'aspiration (4), caractérisé par le fait que la partie d'aspiration (4) comprend, en outre, une chambre d'expansion (9), qui est prévue adjointe au canal d'aspiration (7) et avant le poste d'étranglement (5), de façon à ce que le canal d'aspiration (7) débouche dans la chambre d'expansion avec sa partie la plus étroite (8), et que la chambre d'expansion (9) est rattachée à une source de dépression (11), à l'aide d'une sortie d'air (10).
2. Dispositif de fausse torsion selon revendication 1, caractérisé par le fait que, dans le sens de déplacement du fil (R), un entonnoir (12) est raccordé à la chambre d'expansion (9), et sa sortie constitue le poste d'étranglement (5) et son ouverture d'entrée correspond au moins à la partie la plus étroite (8) du canal d'aspiration (7).
3. Dispositif de fausse torsion selon revendication 1, caractérisé par le fait que la chambre d'expansion (9) possède en outre une ouverture d'entrée d'air (13).
4. Dispositif de fausse torsion selon revendication 1, caractérisé par le fait que la chambre d'expansion (9) est en forme d'anneau.
5. Dispositif de fausse torsion selon revendications 2 et 4, caractérisé par le fait qu'un bourrelet annulaire (15), qui forme l'entonnoir (12), pénètre dans la chambre d'expansion, par quoi une section de passage d'air (17) en forme d'anneau est formée.
6. Dispositif de fausse torsion selon revendication 2 et 4, caractérisé par le fait qu'un prolongement (18), comprenant la partie la plus étroite (8), pénètre dans l'entonnoir (12) et forme, de ce fait, une section de passage d'air (17) cylindrique en forme d'anneau.
7. Dispositif de fausse torsion selon revendication 5 et 6, caractérisé par le fait que la partie la plus étroite (8) et la section de passage d'air (17, 19) sont formées de telle sorte que la résistance de l'air à la partie la plus étroite (8) est plus petite que la résistance de l'air de la section de passage de l'air (17, 19).
8. Dispositif de fausse torsion selon revendications 1, 3 et 4, caractérisé par le fait que l'ouverture d'entrée d'air (13) et la sortie d'air (10) sontdispo- sées de telle sorte que, dans la chambre d'expansion (9IV), l'air est mis en rotation autour de l'axe du fil (3).
9. Dispositif de fausse torsion selon revendications 1 et 3, caractérisé par le fait que l'ouverture d'entrée d'air (13) et la sortie d'air (10) sont disposées dans deux plans séparés, imaginaires et perpendiculaires à l'axe du fil.
10. Dispositif de fausse torsion selon revendication 3, caractérisé par le fait que l'ouverture d'entrée d'air (13) est combinée avec une vanne d'étranglement (14).
11. Dispositif de fausse torsion selon revendication 1 à 10, caractérisé par le fait que la chambre d'expansion (9 à 9IV) est disposée d'une manière tellement excentrique par rapport à l'axe du fil que la vitesse d'écoulement d'air dans la chambre d'expansion reste principalement constante, dans le sens de la sortie d'air (10).
12. Dispositif de fausse torsion selon revendication 1, caractérisé par le fait que la chambre d'expansion (24, 26) n'est pas sous forme d'anneau.
EP83112879A 1983-04-12 1983-12-21 Dispositif de fausse-torsion Expired EP0121602B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83112879T ATE20253T1 (de) 1983-04-12 1983-12-21 Falschdralleinheit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH196183 1983-04-12
CH1961/83 1983-04-12

Publications (2)

Publication Number Publication Date
EP0121602A1 EP0121602A1 (fr) 1984-10-17
EP0121602B1 true EP0121602B1 (fr) 1986-06-04

Family

ID=4222649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112879A Expired EP0121602B1 (fr) 1983-04-12 1983-12-21 Dispositif de fausse-torsion

Country Status (7)

Country Link
US (1) US4509322A (fr)
EP (1) EP0121602B1 (fr)
JP (1) JPS59199825A (fr)
KR (1) KR910006404B1 (fr)
AT (1) ATE20253T1 (fr)
DE (1) DE3363972D1 (fr)
IN (1) IN162582B (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392588A (en) * 1982-06-07 1995-02-28 Burlington Industries, Inc. Spinning with hollow rotatable shaft and air flow
US4719744A (en) * 1982-06-07 1988-01-19 Burlington Industries, Inc. Vacuum spinning method
GB8421020D0 (en) * 1984-08-17 1984-09-19 Carding Spec Canada Handling silver
US5103626A (en) * 1984-12-03 1992-04-14 Burlington Industries, Inc. Fasciated yarn structure made by vacuum spinning
BG41935A1 (en) * 1985-05-07 1987-09-15 Bakhov Air eddy nozzle for spinning of staple fibre yarn
DE3631400A1 (de) * 1986-09-16 1988-03-17 Fritz Stahlecker Verfahren und vorrichtung zum pneumatischen falschdrallspinnen
DE3634557A1 (de) * 1986-10-10 1988-04-14 Fritz Stahlecker Vorrichtung zum pneumatischen falschdrallspinnen
DE3744758A1 (de) * 1987-03-02 1988-12-29 Schubert & Salzer Maschinen Verfahren und vorrichtung zum anspinnen einer mit einem pneumatischen drallorgan arbeitenden spinnvorrichtung
IN171023B (fr) * 1987-04-29 1992-07-04 Rieter Ag Maschf
CH676725A5 (fr) * 1988-11-07 1991-02-28 Rieter Ag Maschf
CA2005018A1 (fr) * 1988-12-12 1990-06-12 Elbert F. Morrison Filature de meche, sous vide
US5237810A (en) * 1989-09-01 1993-08-24 Maschinenfabrik Rieter Ag Method and apparatus for false twist spinning
US5775079A (en) * 1997-04-21 1998-07-07 American Linc Corporation Apparatus for imparting virtual twist to strand material and method of imparting same
US6449938B1 (en) 2000-05-24 2002-09-17 Goulston Technologies, Inc. Advanced finish nozzle system
CH712489A1 (de) 2016-05-26 2017-11-30 Rieter Ag Maschf Garnbildungselement für eine Vorspinnmaschine sowie damit ausgerüstete Vorspinnmaschine.

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130339B (de) * 1958-12-12 1962-05-24 Konrad Goetzfried Verfahren und Vorrichtung zum pneumatischen Spinnen eines Fadens
IT1030358B (it) * 1974-03-23 1979-03-30 Toray Industries Filato avvolto a spirale e apparecchiatura per la sua produzione
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
DE2722319B2 (de) * 1977-01-10 1981-01-15 Toyo Boseki K.K., Osaka (Japan) Vorrichtung zum pneumatischen Falschdrallspinnen
GB1578256A (en) * 1977-05-10 1980-11-05 Toyo Boseki Method and apparatus for false twisting fibres using fluid
CH615467A5 (en) * 1977-05-17 1980-01-31 Toyo Boseki Process and apparatus for the purely mechanical production of a staple-fibre yarn consisting of natural or synthetic fibres
JPS5860029A (ja) * 1981-10-07 1983-04-09 Toyoda Autom Loom Works Ltd 仮撚空気ノズル
US4457130A (en) * 1981-10-13 1984-07-03 Murata Kikai Kabushiki Kaisha Air spinning nozzle unit
JPS58104231A (ja) * 1981-12-15 1983-06-21 Toyoda Autom Loom Works Ltd 結束紡績用仮撚ノズル
JPS58115130A (ja) * 1981-12-25 1983-07-08 Toyoda Autom Loom Works Ltd 仮撚ノズル
JPS58115125A (ja) * 1981-12-29 1983-07-08 Toyoda Autom Loom Works Ltd 結束紡績用仮撚ノズル
US4437302A (en) * 1982-01-20 1984-03-20 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho False twisting air nozzle

Also Published As

Publication number Publication date
KR910006404B1 (ko) 1991-08-21
JPS59199825A (ja) 1984-11-13
DE3363972D1 (en) 1986-07-10
KR840008393A (ko) 1984-12-14
ATE20253T1 (de) 1986-06-15
JPS618161B2 (fr) 1986-03-12
EP0121602A1 (fr) 1984-10-17
IN162582B (fr) 1988-06-11
US4509322A (en) 1985-04-09

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