EP1560960A1 - Procede et dispositif pour produire une meche - Google Patents

Procede et dispositif pour produire une meche

Info

Publication number
EP1560960A1
EP1560960A1 EP03772296A EP03772296A EP1560960A1 EP 1560960 A1 EP1560960 A1 EP 1560960A1 EP 03772296 A EP03772296 A EP 03772296A EP 03772296 A EP03772296 A EP 03772296A EP 1560960 A1 EP1560960 A1 EP 1560960A1
Authority
EP
European Patent Office
Prior art keywords
fiber structure
fiber
swirl chamber
swirl
sliver
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
EP03772296A
Other languages
German (de)
English (en)
Other versions
EP1560960B1 (fr
Inventor
Peter Artzt
Volker Jehle
Sibylle Schmied
Günter Steinbach
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 EP1560960A1 publication Critical patent/EP1560960A1/fr
Application granted granted Critical
Publication of EP1560960B1 publication Critical patent/EP1560960B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides

Definitions

  • the invention relates to a method for producing a roving sliver which is suitable as a template for spinning into a fiber yarn, for example on a ring spinning machine, with a draw frame being warped in a drafting device and this fiber assembly subsequently being twisted before being applied to a sliver Supply coil is wound, as well as a device with which this method can be carried out.
  • the flyer sling used as a template for ring spinning machines is usually made from a drawstring which is drawn on a drafting system, usually a double apron drafting system, and then undergoes a slight rotation so that this fuse can be wound onto a solenoid.
  • the rotation given may only be so high that the cohesion of the fiber structure for winding and unwinding as well as the transport of the bobbins is firm enough so that there are no delays. On the other hand, this rotation must be easily resolved when delayed on ring spinning machines not to impede the delay.
  • the so-called flyer is used as a roving machine to produce the flyer sliver.
  • This pre-spinning machine is equipped with a drafting system and a spindle for winding the flyer sliver onto a solenoid by means of a wing to support the sliver against the centrifugal force caused by the spindle speeds.
  • This flyer is a particularly complicated and expensive machine in the spinning process due to the winding.
  • the usual performance of a flyer is 20-25 meters per minute.
  • this low production cannot be increased with regard to the wind-up system with flyer wings, since a higher speed is limited by the centrifugal force that the wings can withstand.
  • the object of the present invention is to provide a method and a device in which the above-mentioned disadvantages of the conventional pre-spinning process are avoided and nevertheless as a template for the ring spinning machine to create a fiber structure which is refined compared to the draw frame and which fulfills the properties of the conventional flyer sliver.
  • the fiber structure emerging from the drafting system receives an opposite swirl arrangement by air jets in a first and in a second swirl chamber results in only a slight consolidation of the fiber structure, which is sufficient for winding and transport, but when warping on the ring spinning machine can be easily resolved. With this method the production speed can be increased tenfold.
  • the air jets are directed in such a way that, in addition to the swirl effect, suction is also exerted on the fiber structure emerging from the drafting system, as a result of which the fiber structure is transferred into the swirl chamber device without any problems and without loss of fiber.
  • the winding in parallel windings ensures a template, as is already common with the ring spinning machine.
  • a cross winding is preferably produced.
  • the first swirl chamber exerts a lower torque than the second swirl chamber on the fiber structure, so that the fiber structure receives an excess of rotation through the second swirl chamber into the area between the drafting device output roller pair and the first swirl chamber and edge fibers with an open fiber end can split off.
  • the pressure in the first swirl chamber is preferably kept constant and the pressure in the second swirl chamber is changed to match the delivery speed. At a higher delivery speed The pressure in the second swirl chamber is increased in accordance with the higher delivery speed.
  • the winding is favored by a negative distortion to which the fiber structure passing through the swirl chambers is subjected. It has proven to be advantageous both for the winding as well as for the further spinning of the fuse to exert a tension delay on the finished fuse before the winding in order to stretch the winding fibers.
  • An extremely productive device is created in a simple manner by the features of claim 15.
  • the usual sliver compressors in the drafting system are dispensed with, so that the fiber structure can spread sufficiently to form edge fibers. It is essential that a certain distance is maintained between the clamping line of the pair of output rollers and the entrance to the first swirl chamber.
  • the design of the swirl chambers with bores opening tangentially into the through-channel for the fiber structure results in a good swirl effect without the use of rotating parts. It is therefore possible to achieve very high delivery speeds that were previously unknown in roving production.
  • the bores in the first swirl chamber have an angle of inclination with respect to the axis of the through-channel, a suction effect is generated in the direction of the input side of the through-channel, which ensures a good transfer of the fiber structure from the drafting device into the swirl chamber.
  • the same can also be advantageous for the second swirl chamber.
  • the offset of the through-channel of the first swirl chamber transversely to the clamping line of the pair of output rollers results in a kind of swirl stop, so that the spinning triangle is not combined too strongly and the generation of stray edge fibers for winding around the fiber structure is favorably influenced.
  • the speed of the pair of delivery rollers can be adjusted to achieve a specific spinning delay.
  • the winding device expediently generates parallel windings on a spool which is suitable as a template for a ring spinning machine.
  • the start / stop method of claims 39 and / or 41 enables the device to be started up or stopped automatically, for example after a thread break, in a simple manner, without operator intervention and while maintaining the sliver quality.
  • FIG. 2 shows the area of the device according to FIG. 1 with the pair of delivery rollers and the first swirl chamber
  • Figure 4 shows a cross section of the first swirl chamber
  • Figure 5 shows a cross section of the second swirl chamber
  • the fiber structure F is then passed through a pneumatic swirl device which consists of a first swirl chamber 1 and a second swirl chamber 2. From this pneumatic swirl device, the solidified but warpable fiber structure F is drawn off by the delivery roller pair 4 and fed to a winding device 5.
  • Both swirl chambers 1 and 2 each have a through channel 11 and 21, through which the fiber structure F is passed.
  • the through channels 11 and 21 are arranged so that they are aligned with each other.
  • the diameter D of these through-channels 11 and 21 is preferably approximately 1.5 to 4 times the diameter d of the fiber structure F. In this area, all the usual rovings can be produced with a single through-channel size.
  • the diameter D of the through channel 11 or 21 is kept constant over the entire length of the channel.
  • holes 12 open into the through-channel 11 at an inclination angle ⁇ of preferably 45 °.
  • the angle can, however, be in a range from 30 to 60 °, depending on the coordination of the swirl and injector action. Due to the tangential opening of the channels 12, a torque is exerted on the fiber structure F by the air flow. At the same time, the angle of inclination ⁇ creates a suction effect, as a result of which the fibers emerging from the drafting device 3 are sucked into the through-channel 11.
  • the bores 22 in the second swirl chamber 2 are preferably rectangular, i.e.
  • the fiber sliver F emerging from the drafting device 3 is a relatively coarse fiber structure in comparison to yarn production, the lever arm given by the diameter d is large, so that the air flow can exert a large torque on the circumference of the fiber structure F. Ballooning in order to have a crank arm as a point of attack for the air flow for the swirling has proven to be disadvantageous. Balloon formation is avoided by tightly guiding the fiber structure F in the through-channel 11 or 21.
  • the distance A is of decisive importance for the splitting process in the area between the output roller pair 31 and entry into the through channel 11 of the first swirl chamber 1, the size of the distance A being measured according to the fiber length in the fiber structure. Particularly good results could be achieved if this distance A is not greater than the average fiber length, that is the length that 50% of the fibers have. If this condition for the distance A is exceeded, then the roving results in worse values. If the distance A becomes too large, the fiber structure F breaks and the entire process collapses. A smaller distance A has no further disadvantageous effect, but the distance A is limited by the nip of the output roller pair 31. It is important that a clear triangle of spins is formed in this area and that edge fibers FR are split off, which serve to wind around and thereby strengthen the fiber structure.
  • a suitable device for loading Provide mood of the outlet width B of the fiber structure F in the drafting system 3.
  • This can also be a spreading device in order to achieve the width B of the fiber structure F required for the fiber spreading when it emerges from the output roller pair 31.
  • it can also be a limiting device in order to achieve a width B required for the necessary separation of edge fibers FR with simultaneous edge fiber control.
  • This device is to be arranged in the drafting system 3 against the feed direction in front of the pair of exit rollers 31, preferably in front of the main drafting zone.
  • the designs of the two swirl chambers 1 and 2 shown in FIGS. 2 and 3 have proven to be extremely advantageous in terms of manufacture and function.
  • the first swirl chamber consists of a cylindrical outer part 1, into which an inner cylinder 14 is inserted against a stop 16.
  • the outer cylinder 1 has a recess 15 on its inner circumference, which serves as an air duct for the compressed air entering through the opening 13.
  • This inner cylinder 14 carries the nozzles 12, which are connected to the annular channel formed by the recess 15.
  • different inner cylinders 14 can be used for the same swirl chamber 1, which differ in the number and position of the nozzles 12 or also in the diameter of the through-channel 11. Sealing is carried out in a simple manner by means of two O-ring seals 17.
  • the nozzles 12 are inserted or screwed into the inner cylinder 14. After insertion of this inner cylinder 14 into the outer cylinder 1, the nozzle 12 is fixed in its position, likewise by the stop 16, against which the inner cylinder 14 is pushed. This ensures that the nozzle 12 and the mouth of the through-channel 12 are positioned relative to the pair of output rollers 31 of the drafting system 3.
  • the swirl chamber also consists of a cylindrical outer part with a recess 25 on the inner circumference and a continuously cylindrical inner cylinder 24 inserted into this outer cylinder 2, into which the nozzle bores 22 are inserted.
  • various inner cylinders 24 can be inserted without changing the swirl chamber 2 itself.
  • the air supply 23 into the swirl chamber 2 connects the nozzle bores 22 to the compressed air supply 23 via the ring channel formed by the recess 25, regardless of their number. Sealing is also carried out here by means of O-ring seals 27. Guiding the swirl chambers is not only easy with regard to their precise manufacture. Depending on the technological requirements, different inserts with different diameters of the through-channel 11 or 21 and nozzle bores 12 or 22 can also be used.
  • the second swirl chamber 2 is followed by a pair of delivery rollers 4, which feeds the finished fiber sliver to a winding device 5.
  • a sliver guide can be provided, which is expediently tubular.
  • balloon formation should be avoided as far as possible, since these have a disadvantageous effect on the roving produced, e.g. can lead to uncontrolled incorrect warping or flinging of edge fibers FR and thus flight formation. Therefore, the free lengths between the swirl chambers 1 and 2 and the sliver guide should be kept as small as possible. However, these distances are necessary for the removal of the air emerging from the through channels 12 and 22.
  • this sliver guide can be funnel-shaped on the side facing the second swirl chamber 2.
  • This sliver guide also has the task of introducing the finished roving into the draw-off roller pair 4. If necessary and desired, this sliver guide can also be used for traversing.
  • the speed of the pair of delivery rollers 4 is expediently adjustable, since it has proven to be advantageous to subject the fiber structure between the pair of output rollers 31 of the drafting unit 3 and the pair of delivery rollers 4 to a delay.
  • a negative warp which is between 0.97 and 0.99.
  • a winding device 5 on which a bobbin is produced which is suitable as a template for a ring spinning machine.
  • the bobbins with parallel winding which the flyer has known as a conventional roving machine, have been common.
  • this type of winding requires a relatively high level of technical complexity and is therefore expensive.
  • a cross-winding device as is also common in the formation of bobbins for roving in the worsted area, has also proven itself very well in this roving machine.
  • Figure 6 shows another embodiment of the invention described above. It has proven to be extremely expedient to subject the finished fuse to a certain stretching by a tension delay before the winding.
  • the delivery roller pair 4 is therefore followed by a further roller pair 41 for issuing this tension.
  • the clamping line distance between the pair of rollers 4 and the pair of rollers 41 is slightly more than the length of the staple, here the length of the longest fiber is understood to be the length of the staple.
  • This tension causes the wrapping fibers to be stretched, which has proven to be extremely advantageous for the winding and the further processing of the fuse on the ring spinning machine.
  • the tensioning delay between the delivery roller pair 4 and the tensioning roller pair 41 can be varied in the range from 1.05 to 1.5, depending on the fiber material and sliver fineness. As a result of the tension, the wrapping fibers are not only stretched, but the fiber assembly F is combined more strongly by the stretched wrapping fibers.
  • the embodiment shown in FIG. 6 has a single drive for the drafting rollers 34 and 35 and 36 and also for the pair of delivery rollers 31 and the tensioning roller pair 41.
  • many work stations are arranged side by side on a machine frame. Since the production of each work place is very high, it would be extremely disadvantageous to have to shut down the entire machine in the event of a broken rag or another malfunction at one work station, to remedy the malfunction and then to restart all work stations. It should therefore be possible to shut down each individual job individually and to start up again.
  • the individual drive has proven to be advantageous and easy to control compared to through shafts with couplings. Since the device does not produce a usable fuse in the start-up phase, during which the pressures in the swirl chambers 1 and 2 first have to build up, the work station is started up as follows:
  • the feed belt S is clamped in the feed area by the roller pairs 34 and 35, which are driven by a common controllable motor 43.
  • the roller pairs 36 and 31 forming the main draft zone are each driven separately by the motors 44 and 45.
  • a separate drive 42 is provided for the delivery roller pair 4 and the tension roller pair 41.
  • the roller pairs 34 and 35 are now driven with delay, driven by the motor 43.
  • the supply belt S is fed to the main drafting zone via the roller pairs 35 and 36.
  • the fiber assembly F leaving the outlet rollers 31 of the drafting system 3 is sucked in from the mouth of the swirl chamber 1, passed through it to the second swirl chamber 2 and finally reaches the pair of delivery rollers 4 and the tensioning roller pair 41, from which the fuse is first discharged into a suction device 6 only a usable fuse with a corresponding structure arrives on the coil 5.
  • the sliver is removed from the suction 6 and placed on the spool 5.
  • the manufacturing process is now in full swing at a reduced speed.
  • the entire device is now ramped up from the reduced speed to the operating speed.
  • the pressures in the swirl chambers 1 and 2 are readjusted to the final pressures in accordance with this run-up curve, so that a fuse of constant strength and the same fuse structure is always produced.
  • the motor 43 is first stopped in the feed area, as a result of which the sliver is separated by the roller pairs 36 and 31, and 4 and 41 continuing to run. Except for the catchment area, the job is freed from the fuse F. As soon as the end of the fuse F has reached the fuse sensor arranged at the output of the delivery roller pair 4 or also the tension roller pair 41, the entire work station is shut down.
  • the designs described here are exemplary and can be modified in various ways.
  • the explanations and observations described relate essentially to the spinning of short staple fibers, in particular cotton.
  • the same device can also be used successfully for synthetic fibers with cut stacks or fiber blends and for long staple fibers.
  • a certain adjustment of the dimensions and the application of the swirl chambers 1 and 2 is then necessary.
  • this does not change the principle of producing a warpable roving with pneumatic twist described here.
  • a 3-cylinder drafting system can also be used.
  • the suction devices 6 are expediently connected to a common suction channel 61.
  • the sliver monitor 7 can be arranged at the outlet of the pair of rollers 41 or the pair of delivery rollers 4. It can be done mechanically or optically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

La présente invention concerne une mèche qui sert d'alimentation en filature pour former un fil de fibres, par exemple sur un métier à filer continu à anneaux. Cette mèche est produite à partir d'un ruban d'étirage (S) qui est étiré dans un banc d'étirage (3) puis est soumis à une torsion, avant d'être enroulé sur une bobine d'alimentation (5). L'ensemble de fibres sortant du banc d'étirage est soumis à la torsion dans une première chambre de torsion pneumatique (1) comprenant un canal de passage dans lequel des jets d'air agissent sur l'ensemble de fibres dans le sens d'une torsion opposée à la torsion dans la seconde chambre de torsion pneumatique suivante (2). A cette fin, on utilise par exemple un dispositif de torsion pneumatique qui imprime une torsion à l'ensemble de fibres sortant du banc d'étirage et une dispositif de réception qui est conçu pour recevoir la mèche préparée. Le banc d'étirage ne présente, avant sa sortie, aucun compresseur de mèche pour réunir l'ensemble de fibres. Une première et une seconde chambres de torsion (1, 2) sont placées après la paire de cylindres de sortie (31) du banc d'étirage. L'ensemble de fibres sortant du banc d'étirage traverse ces chambres de torsion l'une après l'autre. Des torsions opposées sont respectivement exercées sur l'ensemble de fibres par ces chambres de torsion.
EP03772296A 2002-11-05 2003-11-03 Procede et dispositif pour produire une meche Expired - Lifetime EP1560960B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002151727 DE10251727A1 (de) 2002-11-05 2002-11-05 Verfahren und Vorrichtung zur Herstellung von Flyerlunte
DE10251727 2002-11-05
PCT/EP2003/012243 WO2004042126A1 (fr) 2002-11-05 2003-11-03 Procede et dispositif pour produire une meche

Publications (2)

Publication Number Publication Date
EP1560960A1 true EP1560960A1 (fr) 2005-08-10
EP1560960B1 EP1560960B1 (fr) 2007-01-24

Family

ID=32103380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03772296A Expired - Lifetime EP1560960B1 (fr) 2002-11-05 2003-11-03 Procede et dispositif pour produire une meche

Country Status (4)

Country Link
EP (1) EP1560960B1 (fr)
AU (1) AU2003279347A1 (fr)
DE (2) DE10251727A1 (fr)
WO (1) WO2004042126A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN115210420A (zh) * 2019-12-18 2022-10-18 卓郎智能技术有限公司 在纺纱位置的纺纱装置上排布纤维条子的方法

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DE102006006502B4 (de) * 2006-02-13 2018-03-08 Reinhard König Spinnstrickmaschine
WO2008067804A1 (fr) * 2006-12-03 2008-06-12 Koenig Reinhard Métier à tricoter circulaire pour fabriquer des articles maille en utilisant un matériau fibreux non tordu
DE102006062363B4 (de) * 2006-12-22 2021-02-25 Wilhelm Stahlecker Gmbh Vorrichtung zum Herstellen einer Maschenware mit Streckwerk
EP2112258B1 (fr) 2008-04-25 2016-05-11 Maschinenfabrik Rieter Ag Dispositif et procédé d'enroulement d'une mèche sur une bobine
CH704780A1 (de) * 2011-04-13 2012-10-15 Rieter Ag Maschf Vorspinnmaschine zur Herstellung eines Vorgarns.
CH705221A1 (de) * 2011-07-01 2013-01-15 Rieter Ag Maschf Vorspinnmaschine zur Herstellung eines Vorgarns sowie Verfahren zum Anspinnen eines Faserverbands.
CN102839452A (zh) * 2011-12-19 2012-12-26 江南大学 一种利用涡流喷嘴来提高细纱质量的装置及应用
DE102012108613A1 (de) * 2012-09-14 2014-03-20 Maschinenfabrik Rieter Ag Spinnstelle einer Vorspinnmaschine
CN102926056A (zh) * 2012-11-06 2013-02-13 江南大学 一种可减少成纱毛羽的复合喷嘴装置
CN103215704B (zh) * 2013-04-09 2016-02-17 东华大学 一种携有预加捻器的环锭纺纱装置和方法
CN103276479A (zh) * 2013-06-18 2013-09-04 海宁市盛祥线业有限公司 一种包覆丝机上的卷收机构
CN103614820B (zh) * 2013-12-06 2017-12-12 德州恒丰纺织有限公司 一种利用螺旋气流生产光洁纱的纺纱装置
CH709756A1 (de) * 2014-06-13 2015-12-15 Rieter Ag Maschf Spinndüse für eine Luftspinnmaschine sowie Luftspinnmaschine mit einer entsprechenden Spinndüse.
CN113062017A (zh) * 2021-03-10 2021-07-02 东华大学 一种聚捻须条及其连续成形方法

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JP3185393B2 (ja) * 1992-08-28 2001-07-09 村田機械株式会社 紡績方法
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN115210420A (zh) * 2019-12-18 2022-10-18 卓郎智能技术有限公司 在纺纱位置的纺纱装置上排布纤维条子的方法
CN115210420B (zh) * 2019-12-18 2024-08-27 卓郎智能技术有限公司 在纺纱位置的纺纱装置上排布纤维条子的方法

Also Published As

Publication number Publication date
DE10251727A1 (de) 2004-05-13
AU2003279347A1 (en) 2004-06-07
EP1560960B1 (fr) 2007-01-24
WO2004042126A1 (fr) 2004-05-21
DE50306404D1 (de) 2007-03-15

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