EP1358120B1 - Bobine a bobinage croise - Google Patents

Bobine a bobinage croise Download PDF

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Publication number
EP1358120B1
EP1358120B1 EP02701234A EP02701234A EP1358120B1 EP 1358120 B1 EP1358120 B1 EP 1358120B1 EP 02701234 A EP02701234 A EP 02701234A EP 02701234 A EP02701234 A EP 02701234A EP 1358120 B1 EP1358120 B1 EP 1358120B1
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EP
European Patent Office
Prior art keywords
cross
wound bobbin
yarn
cheese
wound
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
EP02701234A
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German (de)
English (en)
Other versions
EP1358120A1 (fr
Inventor
Heinrich Planck
Christoph RIETHMÜLLER
Helmut WEINSDÖRFER
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.)
Deutsche Institute fuer Textil und Faserforschung Stuttgart
Original Assignee
Deutsche Institute fuer Textil und Faserforschung Stuttgart
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
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Publication of EP1358120A1 publication Critical patent/EP1358120A1/fr
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Publication of EP1358120B1 publication Critical patent/EP1358120B1/fr
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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
    • B65H55/00—Wound packages of filamentary material
    • B65H55/04—Wound packages of filamentary material characterised by method of winding
    • 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
    • B65H54/06—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making cross-wound packages
    • 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

  • Cross-wound bobbins are supply bobbins from which a yarn is withdrawn which is fed to a yarn-consuming machine, for example a loom or a knitting machine.
  • the cross-wound cheese of the cross-wound bobbin is self-supporting and does not require any end disks at the ends.
  • the hold within the cross-wrap is achieved by winding the yarn at relatively high pitch helically, rather than close to tightness, as with a disk coil having end walls.
  • the pitch of the helices is large, so that the thread crosses several times in the individual yarn layers and thus stabilizes the underlying layer. It forms, as it were, an enveloping surface for the underlying layer.
  • the pitch angle or crossing angle with which the threads cross in the individual layers prevents that the threads between the individual turns of the underlying layer stipulatenge, as would be the case with a parallel winding.
  • the thread forms at a turning point the transition from one to another position, or a helix to another.
  • the reversal points at the two ends constantly change their position within the cross-wound to stabilize the front ends.
  • the free accessibility of at least one front end of the cross-wound bobbin is needed to pull off the yarn overhead.
  • the yarn is withdrawn from the top of the stationary cross-wound bobbin through a loop of thread.
  • the thread eyelet is located at a distance from the withdrawal side of the cross-wound bobbin and lies on the axis of symmetry of the cross-wound bobbin.
  • US-A-2,764,368 shows a cross-wound bobbin in which the yarn has a different pitch in the superposed winding layers.
  • the bobbin is wound such that when over-the-head, which in the present case corresponds to peeling over the smaller diameter end, comparatively more yarn is obtained as the release point moves from the down side of the foot compared to the direction of movement of the release point from the foot side to the head side.
  • Modern textile machines in particular weaving machines, have reached a speed that is limited by the feeding speed of the yarn.
  • Fig. 1 illustrates schematically the deduction ratios of a known cross-wound bobbin 1.
  • the cross-wound bobbin 1 consists of a cross-wound bobbin 2, which is wound on a tubular bobbin tube 3.
  • the cross-winding 2 forms a thread or yarn 4.
  • the yarn 4 is wound in layers by means of a known traversing device in turns. Two of these layers are shown schematically in partial detail. In one layer, the yarn 4 is denoted by 5 and in the other layer by 6. For example, be the layer 5, the radially inner layer or winding, while the layer 6 or winding is located radially further out.
  • the one layer for example the layer 5, form the turns of the yarn 4 a left-hand screw, while the turns of the yarn in the layer 6 produce a right-hand screw.
  • the pitch angles, with which the yarn 4 is wound, are measured in terms of magnitude relatively large compared to a plane 7, which is perpendicular to the longitudinal axis of the bobbin tube 3. That is the pitch height
  • the screws forming the layers 5 and 6 are many times larger than the thickness of the yarn 4. In this way it is prevented that the turns of the one layer can constrain between the turns of the other layer and the turns of this layer press apart.
  • the cross-wound bobbin 1 thus obtained forms a withdrawal side 8, which is a substantially flat annular surface.
  • a withdrawal side 8 which is a substantially flat annular surface.
  • the reversal points 9 are distributed as randomly as possible in the region of the withdrawal side, namely randomly distributed both in the circumferential direction and with a certain scattering width in the axial direction.
  • the yarn 4 is withdrawn from the outer circumferential surface of the cross-wound bobbin 1 by an eyelet 11 which is axially spaced from the cross-wound bobbin 1 and lies on the axis of symmetry.
  • the eyelet 11 is fixed in space.
  • the cross-wound bobbin 1 also does not move during yarn withdrawal.
  • a defined separation point is formed 12, viewed from the direction of the yarn 4 when deduction, the course of the yarn no longer corresponds to the course of the yarn within the cross-wound bobbin 1.
  • the Abatesspünkt 12 runs in accordance with the helix, which forms the yarn 4 on the respective outer side of the cross-winding 2 in the circumferential direction, and at the same time moves the separation point 12 in the longitudinal direction of the cross-wound bobbin first
  • the speed at which the separation point 12 rotates in the circumferential direction ie the angular velocity
  • the angular velocity increases when, at a constant take-off speed, the winding diameter has decreased as a result of increasing yarn consumption.
  • the yarn section rotates between the eyelet 11 and the separation point 12 about the imaginary axis formed by the eyelet 11 and the axis of symmetry of the cheese 2. Due to the rotation creates a centrifugal force, which tends to urge the withdrawn yarn piece radially outward.
  • the free-flying yarn defines a space of revolution in the space, the point of which lies at the thread eye 11.
  • the generatrix of this surface of revolution is the respective exposed part of the yarn 4, which describes a complicated space curve. Both the centrifugal force and the air resistance act on this free-flowing piece of yarn so that the yarn course does not form a simple line lying in one plane.
  • the bounded by the free-flying piece of yarn space is referred to as a thread balloon.
  • the outer diameter of the cross-wound bobbin 2 decreases. Since the thread withdrawal speed remains constant, the detachment point 12 must rotate faster to compensate for the reduction in length of thread along the circumference resulting from the reduction in diameter.
  • the centrifugal force will be large enough to lift the yarn 4 from the top of the cheese 2 immediately following the separation point 12.
  • Air resistance effects at the top of the cheese 2 will also have a corresponding influence here.
  • the progressive thread consumption causes the diameter of the cross-wound package 2 to shrink progressively and the angular velocity of the detachment point 12 to continue to increase.
  • the higher speed of the thread in the air causes the initially forming simple balloon to a so-called double balloon with two clearly recognizable voluminous balloon sections which are interconnected via a constriction.
  • the associated course of the flying Garn flirts is shown in Fig. 2.
  • the strength of a yarn obeys a bell-shaped distribution distributed around an average tensile strength value. Due to the scattering of the strength values, there are sections in the yarn which have a significantly higher breaking strength and vice versa but also sections which tear even at significantly smaller forces.
  • the thread-consuming device by no means generates only a single constant force, but also here the force is distributed according to a bell curve be.
  • Yarn breaks are to be expected in the region in which the Gaussian curve of the actually occurring force coincides with the strength distribution of the yarn, ie the region in which the two Gaussian curves form an intersection. The larger this area is, the greater the likelihood that the yarn will break on the side of yarn consumption, resulting in corresponding machine downtime.
  • a very critical route that must pass through the yarn from the cross-wound bobbin to the finished textile structure is the withdrawal from the cross-wound bobbin 1 itself.
  • Fig. 4 shows the course of the thread tension plotted against the winding diameter of the cross-wound bobbin 1.
  • the unit of measure of the winding diameter are millimeters and the unit of measure of tensile force cN (grams).
  • a strongly jagged upper curve 13 shows the progression of the maximum force occurring, in each case per 100 measured values.
  • Below this is a dark-colored, tubular or band-shaped region 14, which illustrates the statistical standard deviation of the measured tensile force values. Approximately in the middle of this band is the statistical average of the tensile force occurring.
  • the diagram is divided into zones numbered 1 to 6.
  • the withdrawal of the yarn 4 from the cross-wound bobbin 1 starts at the maximum diameter of the cross-wound bobbin of about 280 mm. At this diameter, the angular velocity of the separation point 12 is too small for the centrifugal force to detach the yarn directly to the release point 12 from the top of the cross-wound bobbin 1.
  • the yarn 4 grinds over the surface in this operating situation and produces relatively very high strain maxima, although the mean is relatively low, and also the standard deviation is not too large as band 14 indicates.
  • the high tensile maxima are mainly due to the fact that the yarn 4 sliding on the surface gets entangled with the yarn layer over which it slides because the yarn surface is not smooth. It consists of individual fibers.
  • zone 3 To the right of zone 3 is a clear increase in the maximum tension and also in the mean value.
  • the balloon assumes even larger dimensions, which lead to higher tensile stresses due to greater centrifugal force.
  • a randomized change occurs between the single balloon and the double balloon.
  • zone 4 the situation finally reverses in favor of the double balloon, which suddenly reduces the centrifugal forces and thus also the tensile stresses that occur.
  • Both the standard deviation and the occurring maximum stresses, ie the outliers of the voltage in the direction of very large values decrease abruptly.
  • zone 5 With a diameter of less than 60 mm, a change to a triple balloon can be observed.
  • the maximum force increases again relatively strong to collapse abruptly when the triple balloon has formed stationary.
  • the individual layers are wound with different pitches of the helices. They are wound so that the withdrawn thread length is greater as the separation point moves from the head side to the foot side compared to the thread length which is withdrawn as the separation point moves from the foot side to the head side.
  • the screw along which the separation point moves from the head side to the foot side has a much smaller pitch than the helix along which the separation point moves from the foot side toward the head side.
  • the cross-wound bobbin according to the invention will clearly show the transition to the double balloon, which, as illustrated above, is more favorable with regard to the maximum stress occurring.
  • the diameter range, over which a back and forth occurs between the single and the double balloon. be significantly reduced. Smaller areas correspondingly reduce the likelihood of yarn breakage.
  • the constant sway between the sliding thread take-off and the free-running thread take-off in the cross-wound bobbin according to the invention is reduced to a much smaller diameter range.
  • a stationary flying balloon will be formed even at much larger outer diameters of the cheese, starting at the separation point.
  • the invention allows a higher take-off speed.
  • pitches of the helices within the cross-wound can be controlled within certain limits, when the folding into the other type of withdrawal or conformation of the balloon occurs, i. when irreversibly takes place the change from the sliding detachment to the free-floating detachment after the separation point, or the double balloon or the triple balloon.
  • Fig. 5 the cross-wound bobbin 1 according to the invention is shown very schematically.
  • the cross-wound bobbin 1 shows the same basic structure as cross-wound bobbin 1 according to the prior art. It has a bobbin tube 3, on which the cross-wound bobbin 2 is applied.
  • the course of the yarn 4 on the top of the cross-winding 2 is illustrated schematically.
  • deducting the indicated flow point 12 moves in the upper visible yarn layer in the direction of an arrow 15 from the foot 16 to the trigger or head 8.
  • the situation forms a right-hand screw.
  • the detachment point 12 changes to the position underneath, where the detachment point 12 '(provided with an apostrophe because it is in the next position) is moved in the direction of the arrow 17.
  • This layer contains the yarn 4 in a left-hand screw.
  • the detachment point 12 'performs 2.5 turns as it moves from the head or withdrawal side 8 to the foot side 16 and only approximately one movement during the movement from the foot 16 to the withdrawal side 8
  • the turns ratio would be 1 to 2.5.
  • other turns ratios up to 1:10, preferably 1: 5 are conceivable and, depending on the thread ratios, provide improved values of the peel force compared to a cross-wound bobbin in which the turn ratio in the successive layers is 1: 1.
  • Winding ratio is here understood to be the number of turns in which the yarn is wound on the way from the foot side to the head side, compared with the number of turns which describes the yarn in the opposite way.
  • the amount of angle ⁇ that yarn 4 is capable of with the right-hand screw with the plane 7 is greater than the amount of angle .beta. Which the yarn 4 is able to engage with the level-7 left-hand screw.
  • the cross-wound bobbin 1 according to FIG. 5 is manufactured according to the same criteria as usual. It is desirable to avoid accumulation of material due to the reversal point 9 on both the withdrawal side 8 and the base 16. It is also desirable to align the thread path, based on the next layer with the same sense of winding, as random as possible in order to avoid Moiré Strukturen or regularities, which leads to disturbances.
  • the cross-wound bobbin 1 can also be designed by suitable winding so that its cone angle varies depending on the diameter or, for example, towards the end, i. at small diameters turns into a cylindrical shape. It would also be conceivable to produce a cross-wound bobbin 1, in which the cross-wound bobbin 2 is initially cylindrical following the withdrawal side 8 and then merges into a frusto-conical region. It is thus approximated hyperboloid.
  • the cross-winding can also be cylindrical over the entire length and all diameters, as is customary today.
  • gear ratio 1 1 prior art 1: 2 1: 2.5 1: 3 maximum strength 25 cN 18 cN 11 cN 17 cn standard deviation ⁇ 5 cN ⁇ 4 cN ⁇ 3 cN ⁇ 4 cN Average 6 cN 5 cN 3 cN 5 cN
  • gear ratio 1 1 prior art 1: 2 1: 2.5 1: 3 maximum strength 35 cN 18 cN 15 cN 12 cN standard deviation ⁇ 6 cN ⁇ 4 cN ⁇ 3 cN ⁇ 2 cN Average 7 cN 4 cN 4 cN 2 cN
  • the pitch angles ⁇ and ⁇ may be constant except for the edge areas on the take-off side 8 and the foot 6 side. You can also talk about the axial length On the other hand, they can also be dependent on the radial distance. Finally, it is conceivable to produce a conical angle which increases towards the full coil by providing windings in the interior of the cross-wound, with respect to the radial extent, which do not have the full axial length, ie windings are produced which, for example, proceed from the foot 16 only to about half the length of the cross-winding 2 rich.
  • the helices in which the yarn is wound have different pitch in adjacent layers.
  • the winding ratios are selected such that the amount withdrawn is greater when the release point moves from the withdrawal side to the base side as compared to the withdrawn amount as the separation point moves from the foot side to the withdrawal side.

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  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

La présente invention concerne une bobine à bobinage croisé (1) dans laquelle les hélices selon lesquelles est enroulé le fil (4) ont un pas différent dans des positions voisines. Les rapports d'enroulement sont choisis de sorte que la quantité déroulée est supérieure lorsque le point de déroulement se déplace du côté de déroulement à la base, en comparaison avec la quantité déroulée lorsque le point de déroulement se déplace de la base au côté de déroulement.

Claims (18)

  1. Bobine (1) à bobinage croisé
    avec un noyau de bobine et
    avec un enroulement croisé (2), qui est constitué de fil (4) déposé en rangées sur le noyau de bobine (3) et présente un côté levée (8) depuis lequel le fil (4) peut être levé en tête et un côté base (16),
    le fil (4), dans l'enroulement croisé (2), étant disposé en une hélice du côté levée (8) vers le côté base (16) et en une autre hélice avec un sens d'enroulement opposé du côté base (16) vers le côté levée (8), les pas des hélices différant l'un de l'autre d'une manière telle que, au moins dans une portion de l'enroulement croisé (2), la longueur de fil levé dans cette portion, lorsque le point de prélèvement (12') du fil (4) sur la face extérieure de l'enroulement croisé (2) s'est déplacé le long d'une hélice du côté levée jusqu'au côté base (16), est plus grande que la longueur de fil prélevée dans cette portion lorsque le point de prélèvement (12) s'est déplacé le long d'une hélice du côté pied (16) jusqu'au côté levée (8), caractérisée par le fait que les deux hélices définissent un rapport de pas et que le rapport de pas dépend de la distance radiale.
  2. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que la portion est une portion qui s'étend depuis un premier diamètre jusqu'à un second diamètre.
  3. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que la portion est une portion qui s'étend depuis un premier emplacement jusqu'à second emplacement qui est éloigné axialement du premier emplacement.
  4. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait qu'il existe au moins une portion supplémentaire qui présente un rapport d'enroulement selon revendication 1 différent.
  5. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que le noyau de bobine (3) est formé d'un tube de bobine.
  6. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que l'enroulement croisé (2) côté levée (8) est libre de toute couverture.
  7. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que le passage d'une rangée de fil à l'autre rangée de fil a lieu au niveau d'un point de rebroussement (9), les points de rebroussement (9) consécutifs n'étant pas disposés directement l'un au dessus de l'autre, ni côté pied (16), ni côté levée (8).
  8. Bobine à bobinage croisé selon la revendication 71, caractérisée par le fait que les points de rebroussement (9) dans la direction périphérique et/ou dans la direction longitudinale sont décalés les uns par rapport aux autres par rapport à l'axe de l'enroulement croisé (2).
  9. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que l'enroulement croisé (2) est agencé de manière telle que des rangées consécutives ne forment pas un motif moiré.
  10. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que l'enroulement croisé (2) d'au moins la bobine à bobinage croisé (1) complète est cylindrique.
  11. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que l'enroulement croisé (2) est cylindrique sur la totalité de la plage d'utilisation.
  12. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que l'enroulement croisé (2) d'au moins la bobine à bobinage croisé (1) se rétrécit en cône en direction du côté levée (8).
  13. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que l'enroulement croisé (2) est conformé de manière telle que la bobine à bobinage croisé (1) complète forme un enroulement croisé (2) conique dont la forme évolue vers la forme cylindrique au fur et à mesure du prélèvement de fil.
  14. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que le fil appartient à un groupe qui comprend des fils à base de fibres, des fils monofilaments, des fils multifilaments et des fils retordus à base de ceux-ci.
  15. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que le fil est un fil destiné à une utilisation textile ou textile technique.
  16. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que l'angle (α, β) sous lequel le fil (4) est enroulé dans une rangée de fil est compris entre 30° et 12°, mesuré chaque fois par rapport à un plan (7) qui forme un angle droit avec l'axe de l'enroulement croisé (2) et que l'angle (α, β) sous lequel le fil est enroulé dans l'autre rangée de fil est compris entre 0,5° et 15°, mesuré par rapport au même plan.
  17. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que le rapport de spire entre l'enroulement qui s'étend du côté base (16) au coté levée (8) et l'enroulement qui s'étend du côté levée (8) au côté base (16) est compris entre 1 :1,2 et 1 : 10, de préférence entre 1 :1,5 et 1 :1,8.
  18. Bobine à bobinage croisé selon la revendication 1, caractérisée par le fait que l'enroulement croisé côté levée (8) et/ou côté base (16) présente une conformation en tronc de cône.
EP02701234A 2001-02-01 2002-01-25 Bobine a bobinage croise Expired - Lifetime EP1358120B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10104463A DE10104463A1 (de) 2001-02-01 2001-02-01 Kreuzwickelspule
DE10104463 2001-02-01
PCT/DE2002/000250 WO2002060800A1 (fr) 2001-02-01 2002-01-25 Bobine a bobinage croise

Publications (2)

Publication Number Publication Date
EP1358120A1 EP1358120A1 (fr) 2003-11-05
EP1358120B1 true EP1358120B1 (fr) 2007-01-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02701234A Expired - Lifetime EP1358120B1 (fr) 2001-02-01 2002-01-25 Bobine a bobinage croise

Country Status (7)

Country Link
US (1) US7246764B2 (fr)
EP (1) EP1358120B1 (fr)
JP (1) JP4323168B2 (fr)
KR (1) KR20030076639A (fr)
CN (1) CN1254428C (fr)
DE (2) DE10104463A1 (fr)
WO (1) WO2002060800A1 (fr)

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DE102013003286A1 (de) 2013-02-26 2014-08-28 Saurer Germany Gmbh & Co. Kg Verfahren zum Betreiben einer Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine

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EP2556007B1 (fr) * 2010-04-07 2014-10-29 DSM IP Assets B.V. Paquet doté de fils à haut module et procédé pour la formation du paquet

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Publication number Priority date Publication date Assignee Title
DE102013003286A1 (de) 2013-02-26 2014-08-28 Saurer Germany Gmbh & Co. Kg Verfahren zum Betreiben einer Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine

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EP1358120A1 (fr) 2003-11-05
US20040104290A1 (en) 2004-06-03
WO2002060800A1 (fr) 2002-08-08
JP2004533981A (ja) 2004-11-11
DE50209280D1 (de) 2007-03-08
JP4323168B2 (ja) 2009-09-02
CN1254428C (zh) 2006-05-03
US7246764B2 (en) 2007-07-24
CN1500060A (zh) 2004-05-26
KR20030076639A (ko) 2003-09-26
DE10104463A1 (de) 2002-09-12

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