EP1288354A2 - Mesures pour influencer le flux d'air dans un canal de filature d'un métier à filer a vortex - Google Patents

Mesures pour influencer le flux d'air dans un canal de filature d'un métier à filer a vortex Download PDF

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Publication number
EP1288354A2
EP1288354A2 EP02019217A EP02019217A EP1288354A2 EP 1288354 A2 EP1288354 A2 EP 1288354A2 EP 02019217 A EP02019217 A EP 02019217A EP 02019217 A EP02019217 A EP 02019217A EP 1288354 A2 EP1288354 A2 EP 1288354A2
Authority
EP
European Patent Office
Prior art keywords
spindle
channel
fluid
flow
air
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.)
Withdrawn
Application number
EP02019217A
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German (de)
English (en)
Other versions
EP1288354A3 (fr
Inventor
Olivier Wüst
Herbert Dr. Stalder
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter 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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP1288354A2 publication Critical patent/EP1288354A2/fr
Publication of EP1288354A3 publication Critical patent/EP1288354A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex

Definitions

  • the invention relates to a measure, namely a device and a method a device for producing a spun thread from a fiber structure comprising a fiber guide channel with a fiber guide surface for guiding the Fibers of the fiber assembly in an inlet mouth of a yarn guide channel, further comprising a fluid device for generating a vortex flow around the Inlet mouth of the yarn guide channel and the measure according to the invention for influencing the flow conditions in the spindle channel of a stationary Spindle.
  • a device in which the fibers for the integration of the fiber ends through the remaining part of the fibers are guided in a fiber guide and by means of which the Fibers can be captured by the generated air vortex in such a way that a uniform and strong yarn can be produced is described in US 5,528,895.
  • To guide the fibers is a mandrel arranged centrally to the yarn guide channel provided around which the supplied fibers spiral in the direction of Thread guide channel run to be spun.
  • the task is essentially solved in that the flow in the spindle channel is influenced by means such that the entry behavior of the fiber ends and the Spread the fiber ends in weak to suppressed countercurrent or in Mitströmung happens and these means flow-active connections between the Outflow channel and the spindle channel are. Details of the solution and advantageous embodiments are described in the description part with the figures.
  • the invention is based on the knowledge that by influencing the Flow conditions (pressure and speed curve) in the spindle channel Effects on the incoming fibers and the yarn formation process in the area the inlet mouth are possible. By actively influencing this can be achieved that the negative-acting flow is eliminated.
  • the following parameters are required to influence the conditions in the spindle channel of particular importance: the amount of fluid (air) introduced or extracted, Location and direction, where and how fluid is introduced or extracted as well Cross-sectional profile and shape of the spindle channel.
  • the meaning of the parameters will based on the embodiments described in the figures.
  • the basic concept of the invention disclosed herein is suitable for use with different eddy current air spinning devices, such as those from the US 5,528,895 are known. However, it is particularly suitable for spinning devices, as they are known from CH-1845/00, because they are particularly high quality yarns are achievable.
  • the distance A corresponds to the type of fiber and the average fiber length corresponding test results in a range of 0.1 to 1.0 mm.
  • the distance B depends on a diameter G of the inlet mouth 35 and lies, depending on Test results, within a range of 10 to 40% of the above Diameter G.
  • the very close distance of the fiber delivery edge and the inlet mouth of the spindle is critical and disruptions in this area, such as unwanted Flow conditions should be controllable, which is the purpose of the invention.
  • the fiber delivery edge 29 has a length D.1 (FIG. 1a), which is similar to the diameter G of the spindle channel 45 and of an end face 30 a fiber conveying element 27 and a fiber guide surface 28 of the element 27 is formed.
  • the end face 30, with a height O lies within the range of the diameter G and has an empirically determined distance H between the Level E and the opposite inner wall 48 of the spindle channel 45.
  • the fiber conveying element 27 has a guide for guiding the fibers and is in a supporting element 37 received in the nozzle block 20 and forms with this support element forming a fiber guide channel 26 and has at Input a fiber receiving edge 31, around which the fibers are guided, the are fed by a pair of fiber feed rollers (not shown). These fibers are detected by the pair of fiber conveyor rollers by means of a suction air flow and by promoted the fiber guide channel 26.
  • the suction air flow is created by an in Jet nozzles 21 with a blowing direction 38 generated air flow, due to a Injector.
  • these jet nozzles are in a nozzle block 20 on the one hand with an angle beta to produce the aforementioned injector effect and on the other hand inclined at an angle alpha to create a vortex of air generate which with a direction of rotation 24 on a cone 36 of Fiber conveyor element 27 rotates along and around spindle front surfaces 34 in order to then mentioned to form a yarn in the spindle channel 45 of the spindle 32.
  • Figure 2a now shows a first example of the possibilities of the flow conditions in the To influence the spindle channel.
  • the figure shows the details of Figure 1 in addition to this two connecting passages 40 between the ventilation channel 23 and the spindle channel 45.
  • the number and location of the Bores, the inclination thereof with respect to the center line 47 of the spindle channel 45 and the diameter of the holes is chosen so that the desired effect occurs. The the respective optimum can easily be determined by experiments.
  • the material of the spindle cone 33 can also be made of a fluid-permeable Sintered material according to Figure 2b, with a typical for such sintered materials random arrangement of passages 40 exist so that the different pressure ratios between ventilation duct 23 and spindle duct 45 so to speak, can be used everywhere, evenly flowing everywhere. If you select boreholes, the Venturi effect is more effective if the flow is on the surface of the spindle in the ventilation channel 23 is large enough; you choose Sintered body, so a negative pressure effect is used, if a pressure gradient over the distance A in the ventilation channel 23 away from the spindle cone opposite boundary of the nozzle block 20, whereby at the There is a negative pressure on the surface of the spindle cone 33 in the ventilation channel 23.
  • FIG 3 shows a schematic representation of the flow conditions at the spindle cone 33 after introduction of the measure according to the invention.
  • drilled holes 40 for the purpose of a for the fluid permeable connection between the ventilation channel 23 and spindle channel 45 create.
  • a calculated, simulated flow it is a space spiral flow around the spindle cone; but the For the sake of simplicity, the flow arrows became straightforward in the sense of a Main flow direction drawn to an approximate pressure gradient across the To be able to display route A in the ventilation duct.
  • the ones arranged here arbitrarily Passages 40 indicate, indicated by emerging flow arrows, that a fluid out of the bores and enters the ventilation channel 23.
  • FIG. 4 shows a computer simulation of the flow conditions at the mouth of the spindle without the influencing measure according to the invention.
  • FIG. 3 which shows a fiber delivery edge
  • a winding mandrel was included in the calculation in this simulation.
  • the effect shown here namely the swirl vortex W H generated by the jet nozzles 21 in the nozzle block 20, where H stands for main vortex, arises equally in a device with a winding mandrel as in a device with a fiber delivery edge; only the effect of the total current generated in the vortex chamber and the flow conditions generated at the mouth of the spindle are discussed here.
  • the swirl vortex W H propagates along the spindle cone 33 through the ventilation duct 23 as a spiral flow, which is to be shown with the arrows w. Additional calculations along the cone confirm this.
  • a method for dosing influencing becomes which is in the spindle channel of a spindle during the eddy current air spinning process forming air flow by fluidically connecting the spindle channel with the exhaust duct.
  • the method is particularly suitable for influencing of the air flow that forms in the spindle channel of a stationary spindle flow-active connection of the spindle duct to the exhaust duct.
  • the measure for carrying out the method for influencing the metering air flow forming in the spindle channel during the eddy current-air spinning process is that between the spindle duct and the exhaust duct via a certain zone at least several to a large number of flow-active Lanes are provided.
  • FIG. 3 shows a perspective view of a first embodiment of a Device 1 according to the invention for influencing the flow conditions in a spindle channel 45.
  • the device 1 is partial for the sake of clarity shown in section so that the view into the spindle channel 45 is possible.
  • the Spindle channel 45 is arranged centrally in the interior of a spindle 32. In the Spindle channel 45 open first and second fluid channels 40, 41 for the supply and / or Serve to drain fluid.
  • the fluid channels 40, 41 are arranged in two groups.
  • the first fluid channels 40 of the The first group are used to supply fluid into the spindle channel 45.
  • the alignment this fluid channel 40 is selected such that that introduced into the spindle channel 45 Fluid has a directional component that points in the running direction of the yarn 46 (positive y direction).
  • the second fluid channels 41 of the second group are used for Removing fluid from the spindle channel 45. They have an orientation that the Purging fluid favors.
  • the fluid channels 40, 41 make it possible to control the flow conditions in the spindle channel 45 and in the area of its inlet mouth 35 with respect to pressure and To influence the course of the speed. Through this influence the prevailing flow conditions, depending on the fibers to be processed and the processing speed set specifically.
  • the fluid channels 40, 41 are in the embodiment shown through pipes 42, 43 formed, which open from the outside through the spindle 32 into the spindle channel 45.
  • the Pipes 42, 43 open into annular feed channels 50, 51, which the vent channel 23 surround and for jointly feeding the first fluid channels 40 with fluid, respectively discharging fluid from the second fluid channels 41.
  • the first and second fluid channels 40, 41 are in the embodiment shown directed to the center of the spindle channel 45.
  • the channels can also be one regarding the Spindle channel 45 have tangential alignment, such that the resulting Flow has a swirl.
  • the flow velocities and Pressure conditions can also be influenced. E.g. through the second group of Fluid channels 41 sucked more fluid than through the first group of fluid channels 40 is introduced, results in a suitable design in the area of Inlet mouth 35 of the spindle channel 45 is directed into the spindle channel Flow.
  • a subdivision of the ventilation channel 23 can be avoided by the spindle is hollow and the fluid sources / sinks are connected via them (cf. Figure 7).
  • FIG. 4 shows a further embodiment of the device 1 according to the invention a side sectional view.
  • the spindle 32 is arranged in the ventilation channel 23 and bears some resemblance to a torpedo.
  • the spindle 32 is in two Areas held over three struts 52, 53.
  • the struts 52, 53 include Fluid channels 40, 41 each with a first and a second annular channel 50, 51 connect the spindle channel 45.
  • the fluid channels serve for feeding, respectively Sucking off fluid from the spindle channel 45 such that the flow of the fluid in the Spindle channel 45 is influenced.
  • the fluid channels 40 of the first group run in the essentially radial, but have a reverse to the spindle channel 45 directed inclination such that a via these fluid channels into the spindle channel 45 introduced fluid has a component directed in the running direction of the yarn.
  • the second group of fluid channels 41 opens into the second annular channel 51.
  • the second annular channel 51 and the fluid channels 41 serve the second group for extracting fluid from the spindle channel 45. If necessary, the Flow conditions can also be used in reverse.
  • the spindle channel has its entire length has the same circular cross-section.
  • the flow course in Spindle channel 45 can, however, additionally by varying the cross-sectional profile be influenced in many ways. In combination with fluid sinks 41 and / or fluid sources 40 the flow can be optimally adapted to the requirements.
  • the device shown also without the fluid sources / sinks can be operated. In this case, it behaves essentially like one conventional spinning device.
  • FIG. 5 shows the spindle 32 and the spindle channel 45 according to FIG. 4 from the view of a viewer who is located in the swirl chamber (spinning chamber) 22.
  • the Struts 52, 53 are each offset from one another at an angle of 120 °. she have a configuration such that they block the flow in the ventilation duct 23 do not affect negatively.
  • the struts 52, 53 are here in the direction of the spindle 32 aligned. Alternatively, they can also be arranged along a helix in such a way that they influence the flow in the ventilation duct. alternative Designs with a different number of struts are possible. In a Minimal configuration, the spindle 32 can be carried over a single strut become.
  • FIGS. 6a, 6b and 6c show cross-sectional profiles of spindle channels 45 and Arrangements of fluid sources 40 or fluid sinks 41 in a lateral one Sectional view. Due to the symmetrical design, there is only one Half of the spindle channel is shown, which extends to a center line 47.
  • Figure 6a shows a spindle channel 45 with an approximately constant Cross-sectional profile.
  • FIG. 6b shows a spindle channel 45 with a variable cross section.
  • Out Fluid sources 40 become air at different speeds (impulses) in the channel 45 brought in.
  • the flow velocity and the pressure curve become active affected.
  • FIG. 6c shows a further embodiment of a spindle channel 45
  • Spindle channel has a variable cross-sectional profile, which is in the positive y direction seen first increases and then decreases again.
  • a fluid source 40 for blowing air serves.
  • the mouth of the fluid source is relative to the spindle channel 45 in one arranged flat angle, such that the introduced fluid a large Has a pulse component in the y direction.
  • Another fluid source 40 also serves Introduce an additional amount of fluid and affects the local Speed and pressure distribution.
  • a fluid sink 41 is in the area of Second cross section change arranged and serves to a large proportion of the discharge fluids introduced into the spindle channel. That is in the spindle channel 45 located yarn 46, of which only a section is shown, is of this The measure is not affected and is caused by the narrow area of the spindle channel 45 dissipated.
  • FIG. 7 shows a further embodiment of the device 1 according to the invention in FIG a side sectional view.
  • This device has a spindle 32 which a first and a second concentrically arranged annular channel 50, 51 having.
  • the first annular channel 50 also serves to feed fluid channels 40 Air.
  • the fluid channels 40 are in the embodiment shown Bores 40 arranged at an angle to the axis 47 in an inner tube 49.
  • the second annular channel 51 serves to discharge fluid (air) from the inside of the spindle channel 45 via fluid channels 41.
  • the fluid channels 41 are here around essentially radially arranged bores 41. The arrangement shown has the advantage that the ventilation duct is not affected. It is also suitable this embodiment for a rotating spindle.
  • the spindle channel 45 of the arrangement shown has a constant Cross-sectional profile. Alternatively, the course can also be made variable become.
  • the second channels 41 which serve as exhaust air channels, are not mandatory required. It is correspondingly the case with a suitable configuration of the second Channels 41 and the spindle channel 45 possible to dispense with the first channels 40.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP02019217A 2001-08-29 2002-08-27 Mesures pour influencer le flux d'air dans un canal de filature d'un métier à filer a vortex Withdrawn EP1288354A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH16052001 2001-08-29
CH16052001 2001-08-29
CH18192001 2001-10-03
CH18192001 2001-10-03

Publications (2)

Publication Number Publication Date
EP1288354A2 true EP1288354A2 (fr) 2003-03-05
EP1288354A3 EP1288354A3 (fr) 2003-07-16

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EP02019217A Withdrawn EP1288354A3 (fr) 2001-08-29 2002-08-27 Mesures pour influencer le flux d'air dans un canal de filature d'un métier à filer a vortex

Country Status (4)

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US (1) US20030101710A1 (fr)
EP (1) EP1288354A3 (fr)
JP (1) JP2003129343A (fr)
CN (1) CN1434157A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1748094A1 (fr) * 2005-07-27 2007-01-31 Saurer GmbH & Co. KG Métiers à filer pour la fabrication de fil en utilisant des jets d'air vortex
ITPT20080014A1 (it) * 2008-11-27 2010-05-28 Giancarlo Bartolucci Dispositivo aspiratore/soffiatore ad aria compressa per distribuzione di fibre tessili su formazione di filati tubolari a rete
EP2730685A1 (fr) * 2012-10-29 2014-05-14 Maschinenfabrik Rieter AG Elément de formation de fil pour métier à tisser à jet d'air comprenant un insert et filière équipée de celui-ci
DE102012108612A1 (de) 2012-09-14 2014-05-15 Maschinenfabrik Rieter Ag Spinnstelle
WO2016030136A1 (fr) * 2014-08-28 2016-03-03 Maschinenfabrik Rieter Ag Élément de filage pour une filière d'un métier à filer pneumatique, métier à filer pneumatique et procédé pour le faire fonctionner
CN113201814A (zh) * 2021-04-06 2021-08-03 湖北枫树线业有限公司 一种在线制备喷气涡流纺抗菌负离子纱线的装置及工艺

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2219162B1 (es) * 2002-12-23 2006-03-01 Galan Int, S.L. Sistema de hilatura mediante fluido.
CN101006214B (zh) * 2004-08-20 2010-05-12 里特机械公司 用于喷气纺纱机的带有喷射导管的锭子和接头方法
WO2011006270A2 (fr) * 2009-07-16 2011-01-20 Maschinenfabrik Rieter Ag Métier à filer à jet d'air
JP6031847B2 (ja) * 2012-06-22 2016-11-24 村田機械株式会社 中空ガイド軸体、空気紡績装置、及びこれを備える糸巻取機
CH712409A1 (de) * 2016-04-29 2017-10-31 Rieter Ag Maschf Luftspinnmaschine sowie Verfahren zur Herstellung eines Garns.
CN113201815B (zh) * 2021-04-06 2022-05-06 湖北枫树线业有限公司 一种增强纱线抗菌并吸附功能的引纱系统及使用方法
CN113201832B (zh) * 2021-04-06 2022-05-06 湖北枫树线业有限公司 一种制作抗菌纱线的喷气涡流纺工艺及产品
CN113201833B (zh) * 2021-04-06 2022-05-06 湖北枫树线业有限公司 一种喷气涡流纺长效持久杀菌抗菌纱线的制取装置及方法
IT202100020786A1 (it) * 2021-08-02 2023-02-02 Savio Macch Tessili Spa Unità di filatura di tipo air-jet con sistema di avviamento della filatura perfezionato e relativo metodo di avviamento della filatura di tipo air-jet

Citations (3)

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Publication number Priority date Publication date Assignee Title
US5159806A (en) * 1989-11-14 1992-11-03 Murata Kikai Kabushiki Kaisha Apparatus for producing spun yarns
US5528895A (en) * 1993-09-08 1996-06-25 Murata Kikai Kabushiki Kaisha Spinning apparatus with twisting guide surface
JP2001146647A (ja) * 1999-11-22 2001-05-29 Murata Mach Ltd 紡績装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649716A (ja) * 1992-07-28 1994-02-22 Koyo Seiko Co Ltd 紡機用スピンドル装置
KR100296977B1 (ko) * 1996-01-30 2001-11-22 무라타 기카이 가부시키가이샤 방적기의피이싱방법
JP3064951B2 (ja) * 1997-04-24 2000-07-12 村田機械株式会社 糸通し装置
JP3552618B2 (ja) * 1999-12-13 2004-08-11 村田機械株式会社 コアヤーン製造方法および装置
JP4062869B2 (ja) * 2000-09-01 2008-03-19 村田機械株式会社 コアヤーン製造装置及びコアヤーン製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5159806A (en) * 1989-11-14 1992-11-03 Murata Kikai Kabushiki Kaisha Apparatus for producing spun yarns
US5528895A (en) * 1993-09-08 1996-06-25 Murata Kikai Kabushiki Kaisha Spinning apparatus with twisting guide surface
JP2001146647A (ja) * 1999-11-22 2001-05-29 Murata Mach Ltd 紡績装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 22, 9. März 2001 (2001-03-09) & JP 2001 146647 A (MURATA MACH LTD), 29. Mai 2001 (2001-05-29) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1748094A1 (fr) * 2005-07-27 2007-01-31 Saurer GmbH & Co. KG Métiers à filer pour la fabrication de fil en utilisant des jets d'air vortex
ITPT20080014A1 (it) * 2008-11-27 2010-05-28 Giancarlo Bartolucci Dispositivo aspiratore/soffiatore ad aria compressa per distribuzione di fibre tessili su formazione di filati tubolari a rete
DE102012108612A1 (de) 2012-09-14 2014-05-15 Maschinenfabrik Rieter Ag Spinnstelle
EP2730685A1 (fr) * 2012-10-29 2014-05-14 Maschinenfabrik Rieter AG Elément de formation de fil pour métier à tisser à jet d'air comprenant un insert et filière équipée de celui-ci
WO2016030136A1 (fr) * 2014-08-28 2016-03-03 Maschinenfabrik Rieter Ag Élément de filage pour une filière d'un métier à filer pneumatique, métier à filer pneumatique et procédé pour le faire fonctionner
CN113201814A (zh) * 2021-04-06 2021-08-03 湖北枫树线业有限公司 一种在线制备喷气涡流纺抗菌负离子纱线的装置及工艺
CN113201814B (zh) * 2021-04-06 2022-05-06 湖北枫树线业有限公司 一种在线制备喷气涡流纺抗菌负离子纱线的装置及工艺

Also Published As

Publication number Publication date
EP1288354A3 (fr) 2003-07-16
US20030101710A1 (en) 2003-06-05
CN1434157A (zh) 2003-08-06
JP2003129343A (ja) 2003-05-08

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