EP0120216B1 - Va et vient à pales pour machine à bobiner - Google Patents

Va et vient à pales pour machine à bobiner Download PDF

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Publication number
EP0120216B1
EP0120216B1 EP84100848A EP84100848A EP0120216B1 EP 0120216 B1 EP0120216 B1 EP 0120216B1 EP 84100848 A EP84100848 A EP 84100848A EP 84100848 A EP84100848 A EP 84100848A EP 0120216 B1 EP0120216 B1 EP 0120216B1
Authority
EP
European Patent Office
Prior art keywords
yarn
guide
thread
traverse stroke
traversing
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
EP84100848A
Other languages
German (de)
English (en)
Other versions
EP0120216A1 (fr
Inventor
Heinz Dr. Schippers
Erich Dr.-Ing. Lenk
Herbert Turk
Herbert Schiminski
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.)
Oerlikon Barmag AG
Original Assignee
Barmag Barmer Maschinenfabrik 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 Barmag Barmer Maschinenfabrik AG filed Critical Barmag Barmer Maschinenfabrik AG
Publication of EP0120216A1 publication Critical patent/EP0120216A1/fr
Application granted granted Critical
Publication of EP0120216B1 publication Critical patent/EP0120216B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2836—Traversing devices; Package-shaping arrangements with a rotating guide for traversing the yarn
    • B65H54/2839—Traversing devices; Package-shaping arrangements with a rotating guide for traversing the yarn counter rotating guides, e.g. wings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a winding machine for winding a thread into a cross-wound bobbin with a traversing device, by means of which the thread is moved back and forth essentially transversely to its running direction over a traversing stroke H which essentially corresponds to the bobbin length and which has two rotors rotating in opposite directions with driving arms. which circulate in two closely adjacent rotary planes (I, II) penetrated by the thread path and alternately guide the thread with its thread guide edges along a fixed thread guide between the traversing stroke ends.
  • the known winding machine has a slot-shaped positive guidance of the thread with a guide rail in front and a guide rail behind the thread in the end regions of the traverse stroke, the guide rails being offset relative to one another. This avoids the inadmissible lifting of the thread from the guide ruler or the thread guide edge of the driver arms and the accuracy of the thread guide especially in the end regions of the traverse stroke, i.e. improved the precise transfer from one driver arm to the other and the precise takeover of the thread guide by this other driver arm. This is particularly advantageous at the traversing stroke ends if the thread is to be laid there with increased accelerations and / or decelerations in accordance with a laying law. Such laying laws are e.g. described in DE-PS 2040479 (see page 2).
  • each driver arm has a bulbous guide vane on the side facing away from its leading edge (pushing edge), which forms a forced guidance of the thread in the traversing direction when the respective rotor rotates in an end region of the traversing stroke (so also DE-OS 3243985).
  • This configuration of the driver arms prevents the thread from moving faster to the center of the traversing stroke than corresponds to the guide speed of the pushing edge of the wing traveling to the center of the traversing stroke. This is a prerequisite for the production of precisely cylindrical coils, which in particular have no unacceptable bulges or undulations at their ends.
  • the precise transfer of the thread also serves the eccentric bearing of the rotors, which is known not only from the publications mentioned but also from US-PS 3650487 and CH-PS 448835.
  • the object of the invention is to improve the thread transfer and thread take-over.
  • the first measure consists in claim 1, which is delimited with respect to CH-A-424571.
  • This achieves a braking effect which is variable with the traversing movement and which, on the one hand, can be adapted to the tendency of the thread to bounce back and, on the other hand, to the tendency to change the thread tension.
  • the braking effect is an excellent means of keeping the thread tensile force constant over the traversing stroke and producing bobbins with bobbin hardness that is uniform over their length.
  • the deflection on the guide rails is canceled or at least reduced by a short distance immediately following the traversing stroke end, so that it does not oppose a decisive obstacle to the tendency of the thread to spring back over this short distance. Over this short distance, the return of the thread from the end of the stroke towards the center of the stroke is permitted. This measure also increases the reliability of the transfer of the thread from one to the other driving arm and enables the rotors to be mounted concentrically.
  • the further measure consists in claim 2, which is delimited with respect to CH-A-424571.
  • This enables the thread to move under its own pulling force over the specified short distance from the end of the traversing stroke in the direction of the traversing center (the thread returns).
  • the driving arm that takes over and enters the traversing stroke protrudes with its push edge so far below the thread guide that it can safely take over the thread guide. If the thread were to be delayed away from the end of the traversing stroke by means of the guide vane of the passing wing, there would be a risk, depending on the magnitude of the tractive force, that the thread would be overtaken by the accepting driving arm entering the traversing stroke and would no longer be gripped.
  • the proposed measure can increase the reliability of thread take-up at the traversing stroke ends in such a way that the rotors can also be mounted concentrically, which without the measures according to the invention leads to the inoperability of the wing traversing.
  • the guide vanes can advantageously be designed in such a way that the thread between the guide rails of the guide ruler and the gusset, which - in Thread direction seen - by the overlap of the thrust edge of the driving arm leading away from the traversing stroke end and the guide vane of the driving arm leaving the traversing stroke, is forcibly guided and deflected in the course of the traversing stroke, the deflection being reversed to that caused by the traversing movement from the traversing stroke end in the direction of the traversing stroke center, in particular in the end regions of the traversing stroke change in length and change in thread tension is changed.
  • the particular advantage of this configuration is that the thread tension fluctuations of the return stroke, i.e. during and after the reversal of the traversing movement, can be specifically compensated for, in particular the thread tension increased, without at the same time influencing the thread tension of the forward stroke, i.e. before the stroke reversal. This is possible above all if the guide rails of the thread guide rule do not overlap, ie essentially to form a guide slot which is open in the thread direction.
  • the winding machine shown in cross section in FIG. 1 has, as essential components, the winding spindle 1 and the traversing device 2.
  • the winding spindle is driven in the direction of rotation 4 by a motor, not shown, connected to the winding spindle 1.
  • Sleeves 5 are clamped in alignment on the winding spindle.
  • a cross-wound bobbin 6 is formed on each sleeve 5 from a thread 3 starting from a vertical direction.
  • a winding spindle can typically run three or four or six or eight threads parallel to one another and can be wound up to a corresponding number of bobbins 6 for all identical winding times (winding travel).
  • the traversing device consists of two rotors with a plurality of rotating blades 7 and 8, which are arranged in two planes of rotation I and II. In front of these wings is a guide ruler 9, along which the thread slides as it traverses.
  • the guide ruler has the guide rail 9.1 on one side and the guide rail 9.2 (shown in dashed lines) on the other side of the thread running plane.
  • the rotation planes I, II and the plane 111 in which the guide ruler 9 is arranged are inclined such that the rotation planes form an angle alpha between 45 and 70 ° with the thread feed direction indicated by arrow 10. This ensures that a guide roller 11 can be attached at a very short distance below the plane of rotation II.
  • the thread is guided onto the respective bobbin 6 in contact with this guide roller.
  • the guide roller 11 is in circumferential contact on the coil 6. However, the guide roller 11 can also be at a short distance from the surface of the coil and can be driven to rotate.
  • each traversing device which rotate in the plane of rotation I, sit on the rotor 12.
  • its hollow shaft 16 can not only be eccentric but also be mounted concentrically to the shaft 15 of the rotor 12.
  • the rotors of the stroke range shown are driven in opposite directions of rotation, at the same speed and in a certain phase position by a drive (not shown) via a gear 22. Further details result from the prior art and the application EU-84100433.6.
  • 2 and 3 illustrate on the one hand the interaction of the positive guidance and the guide vanes of the driver arms, on the other hand the targeted deflection of the thread on the positive guide elements, namely the guide rails of the guide rail on the one hand and the thread guide edges of the driver arms on the other hand.
  • the entire front end of the wings 7 and 8 shown forms a thread guide edge.
  • the parts of the thread guide edge pointing in the oscillating movement 27 or 28 are referred to as thrust edge 26 and the part facing away from it is referred to as guide flag or brake flag 21.
  • the traversing device consists of a pair of rotors with two-, three- or four-armed blades, of which only one arm 7 or 8 is shown.
  • a traversing device according to the invention can each consist of a pair of one-armed rotors in the traversing stroke end regions and any other type of traversing device in the central region.
  • the belonging gene, not shown rotors are rotatable about the axes 18, 19 and eccentrically to each other and driven in opposite directions of rotation.
  • the guide rail 9.1 of the guide ruler extends over the entire traversing stroke H and is on the bearing side of the rotors.
  • the guide rail 9.2 is designed as a wire bracket and lies on the opposite side of the thread run.
  • This wire bracket 9.2 extends in the exemplary embodiment only over a region B of the traversing stroke end.
  • the wire bracket 9.2 is bent in such a way that it covers the guide rail 9.1 - in the vertical plan view shown on planes I, II, 111 according to FIG. 3 - according to a predetermined, empirically determined and dependent on the measured thread tension law - negative and positive .
  • This positive overlap means that the thread on the guide rails 9.2 and 9.2 is deflected with a certain wrap angle. Furthermore, the thread between the positive guide slot, which is formed between the guide rails 9.1 and 9.2, on the one hand, and the gusset 14, which is formed by the pushing edge 26 of the wing 7 conveying into the traversing stroke and the guide vane 21 of the wing 8 extending from the traversing stroke, on the other hand tense and redirected. These deflections and tensions are designed so that predetermined braking forces are exerted on the thread, which are effective both in the thread running direction and in the traversing direction.
  • the braking forces serve to compensate for fluctuations in the thread tension that occur during the traversing movement over a traversing stroke. These fluctuations are based on the one hand on dynamic effects, but on the other hand on the fact that in the reversal areas the carryover direction with which the thread is traversed between the traversing device and the bobbin is reversed. In the traversing direction, the braking forces should be so great that the thread does not make any uncontrolled movements towards the center of the stroke (return) caused by its thread pulling forces.
  • the deflection and tensioning of the thread between the guide rails and the pushing edge or guide vane of the wings only occurs after the stroke has been reversed. It is therefore an excellent means of avoiding the breakdown of thread tension after the stroke reversal.
  • the thread pulling force occurring from the reversal of the stroke is not increased if the guide rails 9.1 and 9.2 of the guide rule are arranged parallel to one another and essentially without any offset to one another.
  • the overlap of the guide rail 9.2 with respect to the guide rail 9.1 is negative in the region E directly adjacent to the end of the traversing stroke. So no or very little braking force is exerted here in the traversing direction. This happens because at the end of the traversing stroke at which the thread is released by the wing 8 leaving the traversing stroke, a short return is to take place. This return ensures that the thread is taken over and guided by the wing 7, which conveys the traversing stroke, all the more reliably.
  • the wings 7 and 8 have an area 17 which is designed such that it - together with the thrust edge 26 - disappears behind the guide rail 9.1 of the thread guide ruler - as viewed in the thread running direction - so that the thread when it comes free from the pushing edge 26, becomes guidance-free for a brief moment until the area of the guide vane 21 adjoining the area 17 appears above the thread guide ruler or the guide rail 9.1, covers the slot between the guide rails 9.1 and 9.2, and in this way again forms a positive guide for the thread.
  • the thread is given the possibility of a return, especially since the guide rail 9.2 also has a negative overlap with respect to the guide rail 9.1 at this distance.
  • the recess is therefore deliberately used to give the wing 8 entering the traversing stroke the opportunity to emerge above the guide rail 9.1 with a sufficient length of its push edge and to form a secure positive guidance for the thread.
  • Fig. 5 are the thread guide 9 and end pieces of the driver arms 7 and 8 in an end region of the traversing stroke H in supervision represents, the direction of rotation arrows are designated 27 and 28.
  • the driver arms 7 and 8 are shown at a point in time which is shortly after the point in time at which the thread has reached the end of the traversing stroke, that is to say shortly after the point in time at which the pushing edge 26 of the wing moving out of the traversing stroke and transferring the thread 8 dipped under the ruler and released the thread.
  • the front tip of the pushing edge 26 of the wing 7 entering the traversing stroke was just about to emerge above the guide ruler. Therefore, there was no defined guidance of the thread 3 at the end of the traversing stroke.
  • the thread 3 could, due to its thread tensile force and the tension in the traversing triangle, spring back in the direction of arrow 23 from the traversing stroke end to the short distance E, that is, the one shown in FIG. 6 Execute position.
  • the brake vane 21 of the wing 8 leaving the traversing stroke appears above the guide ruler and thereby stops the thread 3, so that the thread only has a speed defined by the shape of the brake vane 21 corresponding to the movement of the gusset, which is formed between the guide ruler 9 and the guide vane 21, can move in the direction of the center of the traversing stroke.
  • the positive guidance of the thread between the guide rails 9.1 and 9.2 is designed in such a way that there is a short distance E at the end of the traversing stroke, in which the guide rails 9.1, 9.2 do not overlap or only slightly overlap in the thread running direction than in the remaining end region B of the traversing stroke.
  • the thread can thus make an unobstructed or only slightly hindered return from the end of the stroke in the direction of the center of the stroke.
  • the return movement is braked, so that the pushing edge 26 of the driving arm 7 entering the traversing stroke, which emerges above the guide rail 9.1, can pull in the thread and take over with a guide length which is sufficiently superior to the guide rail 9.1.
  • the thread is then again forced through the pushing edge 26 of the driving arm 7. Due to the variable overlap between the guide rails 9.1 and 9.2 in the course of the further traversing stroke, the thread is deflected and tensioned with variable intensity.
  • the overlap between the guide rails 9.1 and 9.2 is designed in such a way that the expected changes in the thread tensile forces in the end area of the traversing stroke H are compensated for as completely as possible.
  • the exact course of the covering depends on the respective geometric conditions and the thread running speeds and traversing speeds and can be determined in the first approximation by calculation, but with accuracy only by experiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Winding Filamentary Materials (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)

Claims (5)

1. Bobinoir pour l'enroulement d'un fil (3) en une bobine croisée (6), comprenant un dispositif de va-et-vient (2) par lequel le fil (3), pendant une course de va-et-vient (H) correspondant sensiblement à la longueur de la bobine, est déposé dans les deux sens à peu près transversalement au sens de sa marche et qui comporte deux rotors (12, 13) tournant en sens contraire et munis de bras d'entraînement (7, 8) qui tournent dans deux plans de rotation (I, II) étroitement voisins traversés par le trajet du fil et, entre les extrémités de la course de va-et-vient, conduisent alternativement le fil par leurs arêtes de guidage (26) le long d'une règle-guide fixe (9) et, dans les zones finales (B) de la course de va-et-vient, est prévu en guidage cinématique du fil en forme de fente et comportant une barre de guidage (9.1) devant le fil et une barre de guidage (9.2) derrière le fil, les barres de guidage étant décalées l'une par rapport à l'autre, caractérisé par le fait que le décalage des barres de guidage (9.1, 9.2) dans de courtes zones finales (E) de la course de va-et-vient est plus faible que dans les zones s'y rattachant de manière qu'il en résulte un embrassement variant au cours de la course de va-et-vient du fil sur les barres de guidage (9.1, 9.2).
2. Bobinoir pour l'enroulement d'un fil (3) en une bobine croisée (6), comprenant un dispositif de va-et-vient (2) par lequel le fil (3), pendant une course de va-et-vient (H) correspondant sensiblement à la longueur de la bobine, est déposé dans les deux sens à peu près transversalement au sens de sa marche et qui comporte deux rotors (12, 13) tournant en sens contraire et munis de bras d'entraînement (7, 8) qui tournent dans deux plans de rotation (I, II) étroitement voisins traversés par le trajet du fil et, entre les extrémités de la course de va-et-vient, conduisent alternativement le fil par leurs arêtes de guidage (26) le long d'une règle-guide (9) qui est constituée par au moins une barre de guidage fixe (9), chaque bras d'entraînement (7, 8) comportant, sur son côté opposé à son arête de guidage (arête de poussée) (26), un talon de guidage bombé (21) qui, lors de la rotation du rotor à chaque fois considérée, forme dans une zone finale de la course de va-et-vient avec la barre de guidage (9) un guidage cinématique, se déplaçant dans le sens de va-et-vient, du fil (3), caractérisé par le fait que le talon de guidage (21) est façonné de telle sorte que ce soit seulement derrière une courte zone finale (E) de la course de va-et-vient qu'il dépasse la barre de guidage (9) de la règle-guide et forme avec elle un coin qui, guidant le fil et se déplaçant vers le milieu de la course de va-et-vient, assume le guidage cinématique du fil (3).
3. Bobinoir, caractérisé par la combinaison de toutes les caractéristiques selon les revendications 1 et 2.
4. Bobinoir selon la revendication 3, caractérisé par le fait que le talon de guidage (21) est façonné de telle sorte que le fil (3), entre les barres de guidage (9.1, 9.2) de la règle-guide et le coin, qui - vu dans le sens du fil - est formé par le recouvrement de l'arêt de poussée (26) du bras d'entraînement (7) partant de l'exttémité de la course de va-et-vient et du talon de guidage (21) du bras d'entraînement (8) sortant de la course de va-et-vient, soit guidé cinématiquement et dévié au cours de la course de va-et-vient, la déviation étant modifiée à l'inverse de la variation de longueur et de la variation de la force de traction du fil intervenant du fait du mouvement de va-et-vient depuis la fin de la course en direction du milieu de celle-ci, en particulier dans les zones finales de la course de va-et-vient.
5. Bobinoir selon l'une des revendications précitées, caractérisé par le fait que les rotors (12, 13) sont montés concentriquement l'une par rapport à l'autre.
EP84100848A 1983-01-28 1984-01-27 Va et vient à pales pour machine à bobiner Expired EP0120216B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3302805 1983-01-28
DE3302805 1983-01-28

Publications (2)

Publication Number Publication Date
EP0120216A1 EP0120216A1 (fr) 1984-10-03
EP0120216B1 true EP0120216B1 (fr) 1986-10-29

Family

ID=6189412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84100848A Expired EP0120216B1 (fr) 1983-01-28 1984-01-27 Va et vient à pales pour machine à bobiner

Country Status (3)

Country Link
US (1) US4561603A (fr)
EP (1) EP0120216B1 (fr)
DE (1) DE3461067D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3417457A1 (de) * 1984-05-11 1985-11-14 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Aufspulmaschine
RU2109672C1 (ru) * 1992-12-23 1998-04-27 Бармаг АГ Мотальная машина крестовой намотки

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3404303A1 (de) * 1984-02-08 1985-08-08 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Aufspulmaschine
DE3761556D1 (de) * 1986-08-09 1990-03-08 Barmag Barmer Maschf Verfahren zum aufwickeln von faeden.
DE3627879C2 (de) * 1986-08-16 1995-09-28 Barmag Barmer Maschf Verfahren zum Aufwickeln von Fäden
DE3803286C2 (de) * 1987-02-11 1996-03-14 Barmag Barmer Maschf Aufspulmaschine
US4993650A (en) * 1988-11-07 1991-02-19 Appalachian Electronic Instruments, Inc. High speed precision yarn winding system
US4989798A (en) * 1988-11-07 1991-02-05 Appalachian Electronic Instruments, Inc. High speed precision yarn winding system
US5282582A (en) * 1989-04-28 1994-02-01 Teijin Seiki Co., Ltd. Yarn traversing apparatus
TW295102U (en) * 1992-12-23 1997-01-01 Barmag Barmer Maschf Cross winding machine
DE4317087A1 (de) * 1993-05-21 1994-11-24 Neumag Gmbh Vorrichtung zum Aufwickeln von Fäden
EP0873275B1 (fr) * 1996-10-12 2002-07-17 B a r m a g AG Machine de bobinage pour fil arrivant en continu
DE19845325A1 (de) * 1997-10-10 1999-04-15 Barmag Barmer Maschf Aufspulmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374961A (en) * 1964-01-27 1968-03-26 Toshiba Machine Co Ltd Traverse mechanism
CH448835A (de) * 1966-08-19 1967-12-15 Schaerer Maschf Vorrichtung zum Aufspulen von Fäden, Garnen oder Bändern zu Kreuzspulen
FR1541176A (fr) * 1967-09-18 1968-10-04 Plutte Guide-fil pour bobinoirs et canetières
US3650486A (en) * 1968-05-20 1972-03-21 Toray Industries Yarn traversing method and apparatus of a rotary blade type
GB1595971A (en) * 1977-03-04 1981-08-19 Mackie & Sons Ltd J Yarn winder
DE3243985A1 (de) * 1981-12-03 1983-06-16 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Changiereinrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3417457A1 (de) * 1984-05-11 1985-11-14 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Aufspulmaschine
RU2109672C1 (ru) * 1992-12-23 1998-04-27 Бармаг АГ Мотальная машина крестовой намотки

Also Published As

Publication number Publication date
DE3461067D1 (en) 1986-12-04
US4561603A (en) 1985-12-31
EP0120216A1 (fr) 1984-10-03

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