EP1358120A1 - Bobine a bobinage croise - Google Patents

Bobine a bobinage croise

Info

Publication number
EP1358120A1
EP1358120A1 EP02701234A EP02701234A EP1358120A1 EP 1358120 A1 EP1358120 A1 EP 1358120A1 EP 02701234 A EP02701234 A EP 02701234A EP 02701234 A EP02701234 A EP 02701234A EP 1358120 A1 EP1358120 A1 EP 1358120A1
Authority
EP
European Patent Office
Prior art keywords
yarn
cross winding
cross
winding bobbin
bobbin according
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
EP02701234A
Other languages
German (de)
English (en)
Other versions
EP1358120B1 (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
Application filed by Deutsche Institute fuer Textil und Faserforschung Stuttgart filed Critical Deutsche Institute fuer Textil und Faserforschung Stuttgart
Publication of EP1358120A1 publication Critical patent/EP1358120A1/fr
Application granted granted Critical
Publication of EP1358120B1 publication Critical patent/EP1358120B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 drawn off, which is fed to a yarn-consuming machine, for example a weaving machine or a knitting machine.
  • the cross wrap of the cross winding bobbin is self-supporting and does not require any end disks at the front ends.
  • the hold within the cross wrap is achieved by winding the yarn or thread with a relatively large pitch helically and not close to each other as in a disc spool with end walls.
  • the pitch of the screw lines is large so that the thread crosses several times in the individual thread layers and thus stabilizes the layer underneath. 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 are caught between the individual turns of the layer underneath, as would be the case with a parallel winding.
  • the thread forms the transition from one position to the other, or from one helix to another, at a reversal point.
  • the reversal points on the two ends constantly change their position within the cross wrap to stabilize the ends.
  • the free accessibility of at least one end face of the cross-wound bobbin is required in order to be able to pull the yarn off overhead.
  • the cross winding bobbin remains at rest.
  • the yarn is drawn from the top of the quietest cross winding bobbin through a thread eyelet.
  • the thread eyelet is located at a distance from the take-off side of the cross winding bobbin and lies on the axis of symmetry of the cross winding bobbin.
  • Such a cross winding spool is known from DE 41 42 886, in which the pitch is different in the individual layers. This means that the pitch of the helix formed by the thread in one layer differs in amount from the pitch of the helix in the yarn layer located below or above it.
  • a traversing device is used to produce the known cross-wound bobbin, which operates at different lifting speeds.
  • the cross-wound bobbin produced is wound so that the amount of yarn on the take-off is smaller when the peeling point of the yarn on the outside of the cross-winder moves from the take-off side to the foot side, compared to the amount of yarn taken off when the peeling point moves in the opposite direction ,
  • Fig. I shows schematically the draw-off conditions on a known cross winding spool 1.
  • the cross winding spool 1 consists of a cross winding 2 which is wound on a tubular spool sleeve 3.
  • the cross winder 2 forms a thread or yarn 4.
  • the yarn 4 is wound in layers with the help of a known traversing device in turns. Two of these layers are shown schematically in sections. In one layer the yarn 4 is labeled 5 and in the other layer 6. For example, let layer 5 be the layer or winding lying radially further inside, while layer ⁇ or winding lies radially further outside. One layer, for example the layer 5, the turns of the yarn 4 form a left screw, while the turns of the yarn generate a right screw in the layer 6.
  • the pitch angles with which the yarn 4 is wound are relatively large in terms of magnitude compared to a plane 7 which is perpendicular to the longitudinal axis of the soul sleeve 3. That is, the pitch of the screws forming layers 5 and 6 is many times greater than the thickness of the yarn 4. In this way, it is prevented that the turns of the one layer can get caught between the turns of the other layer and that the turns of this layer are pressed apart.
  • the cross-wound bobbin 1 obtained in this way forms a take-off side 8, which is an essentially flat annular surface.
  • a take-off side 8 In the area of the take-off side 8 there are reversal points 9 at which the course of the yarn changes from one position to the other and thus from one helical line to the opposite helical line.
  • the base side which is constructed in the same way as the take-off side 8 that can be seen in FIG. 1.
  • the yarn 4 is drawn off from the outer circumferential surface of the cross winding bobbin 1 through an eyelet 11 which is axially spaced from the cross winding bobbin 1 and lies on the axis of symmetry.
  • the thread eyelet 11 is stationary in the room.
  • the cross winding spool 1 also does not move during the yarn take-off.
  • the detaching point 12 runs in the circumferential direction in accordance with the helix formed by the yarn 4 on the respective outer side of the cross winder 2, and at the same time the detaching point 12 moves in the longitudinal direction of the cross winding bobbin 1.
  • the speed at which the detachment point 12 rotates in the circumferential direction is dependent on the thread take-off speed and the diameter of the cross wrap 2.
  • the yarn section rotates between the thread eyelet 11 and the detachment point 12 about the imaginary axis which is formed by the thread eyelet 11 and the axis of symmetry of the cross winding 2. Due to the rotation, a centrifugal force is created which tends to force the pulled-off yarn piece radially outwards.
  • the rotational speed of the detachment point 12 of the yarn 4 from the top of the cross wrap 2 is still relatively low for a given thread usage speed.
  • the centrifugal force that occurs does not suffice to detach the yarn 4 immediately after the separation point 12 from the top of the cross wrap 2.
  • the yarn 3 is first passed over the top of the cross ckels 2 slide before it reaches the free space after exceeding the trigger side 8.
  • the free-flying piece of yarn defines a surface of revolution in space, the tip of which lies at the thread eyelet 11.
  • the generator of this surface of revolution is the free-flying piece of yarn 4 in question, which describes a complicated spatial curve. Both centrifugal force and air resistance act on this free-flying piece of yarn, so that the course of the yarn does not form a simple line lying in one plane.
  • the space bounded by the free-flying piece of yarn is referred to as a thread balloon.
  • the outer diameter of the cross wrap 2 is reduced. Since the thread take-off speed remains constant, the detaching point 12 must rotate faster in order to compensate for the reduction in thread length along the circumference that results from the reduction in diameter.
  • the centrifugal force will be large enough to lift the yarn 4 immediately after the separation point 12 from the top of the cross wrap 2.
  • the detachment point 12 releases from the top of the cross wrap 2 and flies freely over the surface. If, on the other hand, the detachment point 12 moves toward the trigger side 8, the rotational speed and the centrifugal force decrease, so that the t ⁇ arn 4 ener ⁇ ie weiyuay nctu drag over the top.
  • Air resistance effects on the top of the cross wrap 2 will also have a corresponding influence here.
  • the progressive thread consumption causes the diameter of the cross wrap 2 to shrink and the angular velocity of the detachment point 12 to increase further.
  • the higher speed of the yarn in the air causes the initially forming simple balloon it is apparent to a so-called double balloon with two ⁇ identifiable voluminous balloon sections which are connected to one another via a constriction.
  • the audible course of the flying yarn is shown in Fig. 2.
  • the strength of a yarn obeys a bell-shaped distribution that is distributed around an average tensile strength value. Due to the scatter of the strength values, there are sections in the yarn that have a significantly higher breaking strength and vice versa, but also sections that tear even with significantly smaller forces.
  • Thread bridges are to be expected in the area in which the Gaussian curve of the force actually occurring coincides covers the strength distribution of the yarn, i.e. the area in which the two Gaussian curves form an intersection. The larger this area, the greater the probability that the yarn breaks on the side of the yarn consumption, which leads to corresponding machine downtimes.
  • a very critical distance that the yarn has to travel from the cross-wound package to the finished textile structure is the withdrawal from the cross-wound package 1 itself.
  • Fig. 4 shows the course of the thread tension plotted against the winding diameter of the cross winding bobbin 1.
  • the unit of measurement of the wikKei ⁇ urcnameter are millimeters and the unit of measurement of the tensile force cN (grams).
  • a strongly jagged upper curve 13 shows the course of the maximum force that occurs, in each case per 100 measured values.
  • Below this is a dark-colored, tubular or band-shaped area 14, which illustrates the statistical standard deviation of the measured tensile force values. The statistical mean value of the tensile force occurring lies approximately in the middle of this band. In the longitudinal direction, the diagram is divided into zones that are numbered from 1 to 6.
  • the withdrawal of the yarn 4 from the cross winding spool 1 begins at the maximum diameter of the cross winding spool of approximately 280 mm. With this diameter, the angular velocity of the detachment point 12 is too small for the centrifugal force to detach the yarn from the top of the cross-wound bobbin 1 directly at the detachment point 12. In this operating situation, the yarn 4 grinds over the surface and generates comparatively very large tensile stress maxima, even though the mean value is relatively low Standard deviation is not too large, as can be seen from the band 14.
  • the high tensile stress maxima are "mainly due to the fact that the yarn 4 sliding on the surface hooks onto the yarn layer over which it slides because the yarn surface is not smooth. Individual fibers protrude from it.
  • zone 3 To the right of zone 3, there is a clear increase in the maximum tensile stress and also the mean value.
  • the balloon takes on even larger dimensions here, which lead to higher tensile stresses due to greater centrifugal force.
  • Zone 4 Towards the end of Zone 4, the situation finally tipped over in favor of the double balloon, which suddenly reduced the centrifugal forces and thus the tensile stresses that occurred.
  • Both the standard deviation and the maximum stresses that occur i.e. the outliers of the voltage in the direction of very large values, decrease suddenly.
  • the maximum force rises again relatively sharply to collapse suddenly when the triple balloon is stationary.
  • the individual layers are wound with different pitch of the helical lines. They are wound so that the length of thread that is drawn off is greater when the peel point moves from the head to the foot side compared to the length of thread that is drawn off when the peel 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 significantly smaller pitch than the screw line along which the separation point moves from the foot side in the direction of the head side.
  • the cross-wound bobbin according to the invention will clearly show the transition to the double balloon, which, as described above, is more favorable with regard to the maximum voltage that occurs.
  • the diameter range over which a back and forth oscillation between the single and double balloons occurs will be significantly reduced. Smaller areas reduce the likelihood of thread breakage accordingly. If a sliding take-off occurs, the constant fluctuation between sliding thread take-off and free-flying thread take-off is reduced to a much smaller diameter range in the cross-wound package according to the invention.
  • a stationary flying balloon will begin to form even at much larger outer diameters of the cross wrap, which begins at the detachment point.
  • the invention enables a higher take-off speed.
  • the cross winding spool 1 according to the invention has the same basic structure as the cross winding spool 1 according to the prior art. It has a bobbin tube 3, on which the cross winding 2 is applied.
  • the course of the yarn 4 on the top of the cross wrap 2 is schematic illustrated table.
  • the indicated run-off point 12 moves in the upper visible yarn layer in the direction of an arrow 15 from the foot side 16 to the trigger or head side 8.
  • the position forms a right-hand screw.
  • the trigger point 12 changes to the position underneath, where the trigger point 12 '(provided with an apostrophe because it is the next layer) moves in the direction of the arrow 17.
  • This layer contains the yarn 4 in a left screw.
  • the trigger point 12 completes 2.5 rounds when it moves from the top or trigger side b to the bottom side 16 and only approx. One handling of the movement from the bottom side 16 to the trigger side 8.
  • the turn ratio is understood here to mean the number of turns in which the yarn is wound on the way from the foot side to the head side, in comparison with the number of turns which the yarn describes on the reverse route.
  • the amount of the angle that the yarn 4 forms in the position with the right screw with the plane 7 is greater than the amount of the angle ⁇ that the yarn 4 forms in the position with the left screw with the plane 7 ,
  • the cross winding spool 1 according to FIG. 5 is manufactured according to the same criteria as usual. The aim is to avoid accumulation of material by moving the reversal point 9 both on the trigger side 8 and on the foot side 16. It is also sought to align the thread course as randomly as possible, based on the next layer with the same winding direction, in order to avoid moiré formation or regularities, which leads to faults.
  • the cross winding bobbin 1 can also be designed by suitable winding so that its cone angle changes depending on the diameter or that, for example, towards the end, i.e. with small diameters changes into a cylindrical shape. It would also be conceivable to produce a cross-wound bobbin 1 in which the cross-wound 2 is initially cylindrical following the take-off side 8 and then merges into a frustoconical region. It approximates hyperboloid.
  • the cross wrap can also be cylindrical over the entire length and all diameters, as is common today.
  • the rise angles ⁇ and ⁇ can be constant. But you can also look at the axial length seen change and they can also depend on the radial distance. Finally, it is conceivable to generate a conical angle that increases towards the full coil by providing windings in the interior of the cross-winding that are not of the full axial length, that is to say windings that start, for example, starting from the radial extension from the foot side 16 only up to about half the length of the cross wrap 2.
  • the screw lines in which the yarn is wound have different pitches in neighboring layers.
  • the winding ratios are chosen so that the amount withdrawn is greater when the trigger point moves from the trigger side to the foot side compared to the amount withdrawn when the trigger point moves from the foot side to the trigger side.

Landscapes

  • 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.
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
DE10104463 2001-02-01
DE10104463A DE10104463A1 (de) 2001-02-01 2001-02-01 Kreuzwickelspule
PCT/DE2002/000250 WO2002060800A1 (fr) 2001-02-01 2002-01-25 Bobine a bobinage croise

Publications (2)

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

Family

ID=7672449

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)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004004926B4 (de) * 2004-01-31 2008-06-05 Festo Ag & Co. Steuerungsmodul für eine Faden-Aufwickelvorrichtung
DE102004010824A1 (de) * 2004-02-27 2005-09-15 Wilhelm Stahlecker Gmbh Kreuzwickelspule und Verfahren zur Herstellung
DE102004048913A1 (de) * 2004-10-06 2006-04-13 Deutsche Institute für Textil- und Faserforschung Verfahren und Vorrichtung zum Umspulen von Fadenzulieferspulen
DE102004057389A1 (de) * 2004-11-26 2006-06-01 Deutsche Institute für Textil- und Faserforschung Stuttgart Verfahren und Vorrichtung zum Umspulen von Fadenzulieferspulen
CN104909212B (zh) 2010-04-07 2018-07-10 帝斯曼知识产权资产管理有限公司 具有高杨氏模量纱线的填装体以及卷绕该纱线填装体的方法
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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DD20293A (fr) *
DE35812C (de) * A. LEUPOLD in Dresden, Marienstrafse 1 Konstruktion von Solenoiden
US1647535A (en) * 1926-11-02 1927-11-01 Foster Machine Co Wound package and method of producing the same
US2267983A (en) * 1938-05-14 1941-12-30 Ind Rayon Corp Manufacture of cross-wound thread packages
US2539942A (en) * 1947-03-24 1951-01-30 American Enka Corp Production of cross wound bobbins
US2764368A (en) * 1952-10-31 1956-09-25 British Celanese Yarn winding
CH603469A5 (fr) * 1975-11-05 1978-08-15 Rieter Ag Maschf
US4586679A (en) * 1984-02-06 1986-05-06 Toray Industries, Inc. Yarn package of carbon filament yarn
JPS6151465A (ja) * 1984-08-16 1986-03-13 Teijin Ltd 仮撚捲縮糸のチ−ズパツケ−ジ
EP0244653B1 (fr) * 1986-04-09 1994-07-13 Asahi Kasei Kogyo Kabushiki Kaisha Bobinoir pour fils synthétiques, paquet à spires croisées de fil synthétique, et procédé pour sa fabrication
DE3627879C2 (de) * 1986-08-16 1995-09-28 Barmag Barmer Maschf Verfahren zum Aufwickeln von Fäden
JPH03128866A (ja) * 1989-10-16 1991-05-31 Murata Mach Ltd 綾振ドラム
JP2560918B2 (ja) * 1990-12-28 1996-12-04 村田機械株式会社 トラバース装置
DE4313113A1 (de) * 1992-04-24 1993-10-28 Barmag Barmer Maschf Asymmetrische Fadenspule
JPH06151465A (ja) * 1992-11-10 1994-05-31 Toshiba Corp 半導体素子
JP2881678B2 (ja) * 1994-02-16 1999-04-12 ヨット糸業有限会社 巻糸体並びに巻糸体の製造装置
JPH10167564A (ja) * 1996-12-05 1998-06-23 Toray Ind Inc 炭素繊維パッケージおよび炭素繊維梱包体
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Non-Patent Citations (1)

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Also Published As

Publication number Publication date
JP2004533981A (ja) 2004-11-11
CN1500060A (zh) 2004-05-26
KR20030076639A (ko) 2003-09-26
EP1358120B1 (fr) 2007-01-17
JP4323168B2 (ja) 2009-09-02
CN1254428C (zh) 2006-05-03
DE10104463A1 (de) 2002-09-12
DE50209280D1 (de) 2007-03-08
WO2002060800A1 (fr) 2002-08-08
US20040104290A1 (en) 2004-06-03
US7246764B2 (en) 2007-07-24

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