EP0417850A2 - Métier à retordre à double torsion avec une broche de deux arbres creuses et avec un accouplement d'arbres mobile - Google Patents

Métier à retordre à double torsion avec une broche de deux arbres creuses et avec un accouplement d'arbres mobile Download PDF

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Publication number
EP0417850A2
EP0417850A2 EP90202385A EP90202385A EP0417850A2 EP 0417850 A2 EP0417850 A2 EP 0417850A2 EP 90202385 A EP90202385 A EP 90202385A EP 90202385 A EP90202385 A EP 90202385A EP 0417850 A2 EP0417850 A2 EP 0417850A2
Authority
EP
European Patent Office
Prior art keywords
cheese
yarn
spindle
basket
hollow shaft
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.)
Granted
Application number
EP90202385A
Other languages
German (de)
English (en)
Other versions
EP0417850B1 (fr
EP0417850A3 (en
Inventor
Luigi Colli
Vittorio Colussi
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.)
Savio Macchine Tessili SpA
Original Assignee
Savio SpA
Savio Macchine Tessili SpA
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 Savio SpA, Savio Macchine Tessili SpA filed Critical Savio SpA
Publication of EP0417850A2 publication Critical patent/EP0417850A2/fr
Publication of EP0417850A3 publication Critical patent/EP0417850A3/en
Application granted granted Critical
Publication of EP0417850B1 publication Critical patent/EP0417850B1/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
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/10—Spinning or twisting machines in which the product is wound-up continuously for imparting multiple twist, e.g. two-for-one twisting
    • D01H1/105—Arrangements using hollow spindles, i.e. the yarns are running through the spindle of the unwound bobbins
    • D01H1/106—Two-for-one twisting
    • D01H1/108—Two-for-one twisting for two or more supply bobbins one on top of the other

Definitions

  • the present invention relates to an improvement in the double-twist spindle for doubling frames in which each yarn cheese is supported on a hollow shaft of its own, with the yarns being reeled off upwards from each cheese, and each yarn reeled off from its cheese directly penetrates its relevant hollow shaft without reaching, while running along its path, the region which surrounds the other cheese.
  • Said hollow shafts are arranged superimposed to each other by means of a mobile coupling inside the spindle basket.
  • the invention can be applied to a double-twist spindle, in order to twist a plurality of yarns together with one another, such as to generate a ply yarn.
  • Said yarns can have any compositions, or structures, and in the instant disclosure and in the appended claims they will be simply referred to as "threads", “yarns” or “ply yarns”, with these terms being all used with interchangeable meanings and it is herein understood that these terms include all of the filaments, or filament complexes or fibres, whether of natural origin, or man-­made.
  • twist together is used herein in the broad sense of combining two or more yarns together with each other; and the broad sense may include the twisting together of a plurality of previously twisted component yarns or threads.
  • the invention is particularly suitable for twisting two yarns together with each other; it can anyway be also suitable for combining three or more yarns; with the limit value of the number of yarns being only determined by practical considerations.
  • the double-twist spindles having this structure known from the prior art show the further drawback that the yarn is caused to run into contact with, and to creep along, the external peripheral surface of the mutually superimposed feed cheeses, which may cause the same yarn to be damaged by abrasion, with its mechanical strength being decreased. Therefore, the risk exists that the mutual intersecting of the yarns and the above mentioned creeping along the external peripheral surfaces of the same cheeses may cause dust and air-borne fibrils to be formed, which, after a certain time period, are twisted together with the yarn and can hence cause twist faults.
  • Said reeling-off arms are dragged by the yarn to rotate around the hollow shaft of the spindle, in that they are centered on it and are used since long as auxiliary means for the unwinding of the yarns which have to be twisted.
  • DE 1,159,82 patent is one from the numerous examples of application of a plurality of reeling-off arms.
  • DE 398,392 provides two cheeses coaxially arranged over each other, with the yarn from the upper cheese being unwound downwards and the yarn from the lower cheese being unwound upwards.
  • This yarn by running downwards, is subject to simultaneously unwinding in a plurality of turns which, by collapsing by gravity, cause the same yarn to loosen, thus causing changes to occur in the tension of both yarns which have to be twisted with each other, causing conditions of uneven twisting.
  • This effect is undesired in that it wastes the appearance of the end ply yarn and additionally causes a decrease in the tensile stress thereof, owing to the fact that the individual yarns are loaded with an uneven pulling load.
  • a purpose of the present invention is of getting rid of the above cited drawbacks by providing a spindle for double-twist doubling frames for producing ply yarns, which shows the following advantages: - it makes it possible yarns to be twisted on the double-­twist spindle, which come from cone-frustum-shaped cheeses with any values of conicalness and with considerable axial outline dimensions, i.e., with any values of yarn winding stroke; with the possible limitations only depending on the dimensional capability of the doubling frame to house the cheeses; - it enables the yarns to never interfere with each other while they are getting reeled off from the two mutually superimposed cheeses; - it makes it possible a perfectly symmetrical unwiding of the two feed cheeses to be achieved, with the tensions of the yarns unwound from said cheeses being consequently uniform.
  • said yarns run along a reeling-off path which is identical for each of them, with the yarn running paths being simultaneously separated from each other; - it makes it possible the formation of loops, rings, and helical portions to be eliminated, with any breakages of the yarns which are being unwound in order to produce the ply yarn being simultaneously eliminated; - it enables any rotary elements, such as reeling-off arms, or any stationary spacer elements with either fixed or variable geometry, such as guide plates or guide disks for the unwound yarns, to be eliminated.
  • a further advantage of the spindle for double-twist doubling frames according to the present invention is that it is capable of twisting yarns of any structures, including cotton and yarns suffering from low-speed reeling off problems, in that the yarns fed in order to produce the end ply yarn do not intersect each other and, as a consequence, do not undergo any wearing, nor do they undergo any tension changes while they are being unwound.
  • the latter advantage makes it possible a ply yarn to be obtained, whose quality is higher and with lower operating costs.
  • the best quality springs from the absence of wear due to the creeping of the individual yarns on each other, from the perfectly identical tensions shown by said yarns, and from air-­borne dusts and fibrils being not generated, in that the yarns run along different -- and simultaneously of identical shape -- paths during the whole unwinding step.
  • the spindle for double-twist doubling frames makes it possible the feed cheeses to be rapidly charged to the container basket, and also makes it possible their support tubes to be rapidly removed when the unwinding is complete, i.e., the replacement of the cheeses has to be quick, and easy to be performed.
  • This feature is achieved, e.g., due to the fact that the hollow shaft on which the cheese which is superimposed to the underlying cheese is installed, is supported in its turn by an element resting and centered on elements fastened to the inner surface of the cheese-bearing basket. Therefore, in order to charge and discharge the cheeses used to feed the spindle according to the present invention, no complex operations are required from the user, nor does he have to use any auxiliary tools.
  • each undividual yarn feed cheese is supported on a hollow shaft of its own, with the yarn being reeled off from all of said cheeses upwards, or anyway in the same direction of reeling off of the yarns of the other cheeses, and each yarn directly enters the hollow shaft of its own cheese without reaching, during its running, the region which surrounds the other cheese, and without the aid of any reeling-off arms or elements.
  • the hollow shaft on which the cheese which is superimposed to the underlying cheese is supported can be slid out from the basket, and inside said basket is supported, together with its own cheese, by a support resting on elements fastened onto the inner wall of the same basket inside which the cheeses which are being reeled off are contained.
  • the figure schematically shows, in axonometric pespective, a partial axial sectional view of the spindle for double-twist doubling frames, according to the present invention, in a form of practical embodiment of two mutually superimposed, cone-frustum-­shaped cheeses which feed the yarns needed in order to form the end ply yarn.
  • the path is shown of the yarns which are reeled off, each yarn from its own cheese, and enter their respective hollow shaft.
  • 1 and 2 are the two cone-frustum-shaped cheeses which will feed the yarns in order to originate the ply yarn obtained from the spindle 25 by means of its double-­twisting action.
  • Said mutually superimposed cone-frustum-­shaped cheeses 1 and 2 are arranged with their taper being directed upwards, i.e., their shortest diameter is at the top and their orientation is the same;
  • 18 is the upper -- substantially stationary -- hollow shaft of the spindle 25.
  • Said hollow shaft 18 is provided with a circumferential element 19 in a middle region thereof, and with a bottom hub 11 made integral with radial support elements 12. These latter preferably consist of three radial beams arranged at an angle of substantially 120° to each other.
  • the element 19 and the support hub 10 cause the cheese 1 to be centered around the hollow shaft 18, by getting coupled with the inner surface of the conical tube 6 of the cheese 1.
  • 25 is the spindle according to the present invention, whose axis can be vertical, horizontal, or inclined.
  • said spindle 25 will be described herein in its essential parts only; it is disclosed in greater detail only in the parts concerned by the instant invention.
  • the reference numeral 35 indicates the pulley which causes the rotary portion, per se known, of the spindle 25, to revolve.
  • Said pulley 35 is normally caused to revolve by a belt, or by means of other drive means, all of which are known from the prior art, and are meaningless for the purposes of the present invention.
  • the reference numeral 20 indicates the upper end -- also denominated "upper reeling-off head -- of the hollow shaft 18, and the yarn 21, unwound from the cheese 1 superimposed to the bottom cheese 2, enters the central aperture thereof and runs downwards; 16 is the upper end -- also denominated "lower reeling-off head -- of the hollow shaft 15, and the yarn unwound from the cheese 2 enters the central aperture thereof together with the yarn 21 leaving the hollow shaft 18, and both of said yarns run downwards; 9 is the container basket which houses the mutually superimposed, yarn-feed cheeses.
  • the reference numeral 12 indicates the support structure constituted by three or more radial elements, rigidly connected with the support hub 10 in the central region and resting at their peripheral portion onto the circumferential, shoulder-­like, protruding element 3.
  • Said protruding element, also said "circumferential insert” is a rigid element and therefore constitutes an enbloc body with the inner surface 14 of the cheese-containing basket 9; 4 is the tube of the cone-frustum-shaped cheese 2.
  • the inner surface of said tube by getting coupled with the circumferential protrusions 8 and 5, causes the cheese 2 to be centered around the hollow shaft 15;
  • 33 is the ply yarn which radially leaves the yarn accumulator disk 30 through the duct 29 provided in said yarn accumulator disk for the same ply yarn;
  • 24 is the expansion device provided in order to control the tension of the yarn inside the spindle.
  • said device is the "expansion plug" already known in the art, constituted by two cylindrical elements axially arranged and kept in their position by at least one elastic force, the value of which can be adjusted, with the tension given to the passing yarn being consequently adjusted;
  • 34 is the cup, or rotary plate, whose external edge guides the ply yarn after its leaving the duct 29;
  • 32 is the circular shell acting as the container for the balloon of ply yarn 33.
  • said shell is given the name of "balloon-­breaker container”;
  • 27 is a yarn-guide ring which determines the top of the balloon of the end ply yarn 33 which ply yarn, by running upwards, feeds the winding unit (not shown in the figure).
  • the spindle according to the present invention is fed with feed cheeses, in order to enable said spindle to produce the ply yarn.
  • the yarn-guide ring 27 is lifted, the hollow shaft 18 -- and consequently the support hub 10 and the support frame 12 which constitute an enbloc body with said hollow shaft 18, are removed from the basket 9.
  • a yarn feed cheese 2 is charged to the basket 9 and is installed on the hollow shaft 15, whose axis is the centering axis for said cheese 2,thanks to its circumferential protrusions 8 and 5 integral, as one single body, with said hollow shaft 15.
  • the leading end of the yarn is fastened onto a nylon needle by being wound around it. Said nylon needle is then slid through the central (inlet) aperture 16 of the hollow shaft 15.
  • Said needle together with the leading end of the yarn 7 fastened to it, shall be caused to exit the duct 29 of the accumulator disk 30 and then move upwards along the annular air space bounded by the basket 9 and the container 32. In that way, the leading end of the yarn of the cheese 2 is lifted up to the outlet defined by the top edge of the container 32.
  • the hollow shaft 18, around which the feed cheese 1 is housed, is then inserted inside the basket (the axis of said cheese 1 coincides with the axis of the hollow shaft 18 thanks to the inner surface of its inner tube 6 getting coupled with the circumferential element 19 and the support hub 10 provided on said hollow shaft 18).
  • the support frame 12 is laid on the circumferential shoulder 3.
  • the leading end of the yarn 21 of the cheese 1 is fastened onto a nylon needle.
  • said latter nylon needle being slid through the central (inlet) aperture 20 of the hollow shaft 18, said leading end of yarn 21 is caused to leave the container 32 at the outlet defined by the top edge of said container 32 (all the above is done in the same way as of the operation disclosed for the leading end of the yarn 7 of the underlying cheese 2.)
  • both individual yarns 7 and 21 come to stand side-by-side of each other at the outlet defined by the top edge of the container 32. Said individual yarns 7 and 21 will be passed together with each other through the yarn-guide ring 2 and, while being so retained, will be sent to the winding unit (not shown in the figure).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP90202385A 1989-09-15 1990-09-07 Métier à retordre à double torsion avec une broche de deux arbres creuses et avec un accouplement d'arbres mobile Expired - Lifetime EP0417850B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8921743A IT1231708B (it) 1989-09-15 1989-09-15 Perfezionamento al ritorcitoio con fuso a doppio perno cavo ad innesto mobile.
IT2174389 1989-09-15

Publications (3)

Publication Number Publication Date
EP0417850A2 true EP0417850A2 (fr) 1991-03-20
EP0417850A3 EP0417850A3 (en) 1991-07-17
EP0417850B1 EP0417850B1 (fr) 1996-04-03

Family

ID=11186239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90202385A Expired - Lifetime EP0417850B1 (fr) 1989-09-15 1990-09-07 Métier à retordre à double torsion avec une broche de deux arbres creuses et avec un accouplement d'arbres mobile

Country Status (3)

Country Link
EP (1) EP0417850B1 (fr)
DE (1) DE69026325T2 (fr)
IT (1) IT1231708B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519539A1 (fr) * 1991-06-06 1992-12-23 SAVIO S.p.A. Procédé d'enfilage pneumatique dans la broche creuse d'un métier à rétordre à double torsion
EP0528464A1 (fr) * 1991-08-02 1993-02-24 SAVIO MACCHINE TESSILI S.r.l. Procédé d'enfilage pneumatique dans un métier à retordre avec une broche de deux arbres creux
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
US5752376A (en) * 1996-02-05 1998-05-19 Savio Macchine Tessili S.P.A. Tension-regulating rotary unwinder for a double-twist twisting frame
EP0887446A2 (fr) * 1997-06-28 1998-12-30 Firma HAMEL AG Procédé et broche de retordage d'un fil triple pour assemblage et retordage simultanés
EP1584714A2 (fr) * 2004-02-09 2005-10-12 SAVIO MACCHINE TESSILI S.p.A. Dispositif pour bloquer l'enroulement des fils des bobines d'alimentation dans une broche à double torsion

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1159828B (de) * 1961-12-07 1963-12-19 Hamel G M B H Zwirnerei Und Sp Doppeldrahtzwirnspindel zum Hestellen von zweifachem Zwirn ab koaxial uebereinanderangeordneten Ablaufspulen
DE1159826B (de) * 1958-12-12 1963-12-19 Edmund Hamel Fadenfuehrung fuer Doppeldrahtspindeln zum Zwirnen von getrennten Ablaufspulen
US3119224A (en) * 1961-12-20 1964-01-28 Hamel Zwirnerei Und Spinnereim Plural-spool spindle
DE1227367B (de) * 1962-03-01 1966-10-20 Volkmann & Co Mehrfachdrahtzwirnspindel
DE1905049A1 (de) * 1968-02-16 1969-09-18 Elitex Zd Y Textilniho Strojir Verfahren zur Herstellung von gezwirntem Garn mit Doppeldraht und Doppeldrahtzwirnspindel zur Durchfuehrung dieses Verfahrens
DE1927546A1 (de) * 1969-05-30 1970-12-03 Palitex Project Co Gmbh Vorrichtung fuer Doppeldrahtzwirnspindeln
US3648449A (en) * 1969-05-13 1972-03-14 Hammel Gmbh Zwirnerei Und Spin Spool holder for twisting machine or the like

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1159826B (de) * 1958-12-12 1963-12-19 Edmund Hamel Fadenfuehrung fuer Doppeldrahtspindeln zum Zwirnen von getrennten Ablaufspulen
DE1159828B (de) * 1961-12-07 1963-12-19 Hamel G M B H Zwirnerei Und Sp Doppeldrahtzwirnspindel zum Hestellen von zweifachem Zwirn ab koaxial uebereinanderangeordneten Ablaufspulen
US3119224A (en) * 1961-12-20 1964-01-28 Hamel Zwirnerei Und Spinnereim Plural-spool spindle
DE1227367B (de) * 1962-03-01 1966-10-20 Volkmann & Co Mehrfachdrahtzwirnspindel
DE1905049A1 (de) * 1968-02-16 1969-09-18 Elitex Zd Y Textilniho Strojir Verfahren zur Herstellung von gezwirntem Garn mit Doppeldraht und Doppeldrahtzwirnspindel zur Durchfuehrung dieses Verfahrens
US3648449A (en) * 1969-05-13 1972-03-14 Hammel Gmbh Zwirnerei Und Spin Spool holder for twisting machine or the like
DE1927546A1 (de) * 1969-05-30 1970-12-03 Palitex Project Co Gmbh Vorrichtung fuer Doppeldrahtzwirnspindeln

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519539A1 (fr) * 1991-06-06 1992-12-23 SAVIO S.p.A. Procédé d'enfilage pneumatique dans la broche creuse d'un métier à rétordre à double torsion
EP0528464A1 (fr) * 1991-08-02 1993-02-24 SAVIO MACCHINE TESSILI S.r.l. Procédé d'enfilage pneumatique dans un métier à retordre avec une broche de deux arbres creux
US5291729A (en) * 1991-08-02 1994-03-08 Savio S.P.A. Method for pneumatic threading in a twister with a double hollow mandrel spindle
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
US5802834A (en) * 1995-01-07 1998-09-08 Palitex Project - Company Gmbh Method for threading yarns of two supply bobbins positioned coaxially atop one another in a two-for-one twisting spindle through the two-part hollow spindle axle
US5752376A (en) * 1996-02-05 1998-05-19 Savio Macchine Tessili S.P.A. Tension-regulating rotary unwinder for a double-twist twisting frame
EP0887446A2 (fr) * 1997-06-28 1998-12-30 Firma HAMEL AG Procédé et broche de retordage d'un fil triple pour assemblage et retordage simultanés
EP0887446A3 (fr) * 1997-06-28 2000-02-23 Firma HAMEL AG Procédé et broche de retordage d'un fil triple pour assemblage et retordage simultanés
EP1584714A2 (fr) * 2004-02-09 2005-10-12 SAVIO MACCHINE TESSILI S.p.A. Dispositif pour bloquer l'enroulement des fils des bobines d'alimentation dans une broche à double torsion
EP1584714A3 (fr) * 2004-02-09 2006-04-26 SAVIO MACCHINE TESSILI S.p.A. Dispositif pour bloquer l'enroulement des fils des bobines d'alimentation dans une broche à double torsion

Also Published As

Publication number Publication date
EP0417850B1 (fr) 1996-04-03
DE69026325T2 (de) 1996-09-19
EP0417850A3 (en) 1991-07-17
IT8921743A0 (it) 1989-09-15
IT1231708B (it) 1991-12-20
DE69026325D1 (de) 1996-05-09

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