EP4043625A1 - Élément de filature - Google Patents

Élément de filature Download PDF

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Publication number
EP4043625A1
EP4043625A1 EP21156375.4A EP21156375A EP4043625A1 EP 4043625 A1 EP4043625 A1 EP 4043625A1 EP 21156375 A EP21156375 A EP 21156375A EP 4043625 A1 EP4043625 A1 EP 4043625A1
Authority
EP
European Patent Office
Prior art keywords
yarn
segment
forming element
sub
cone
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
EP21156375.4A
Other languages
German (de)
English (en)
Other versions
EP4043625B1 (fr
Inventor
Jochen Dressen
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.)
Saurer Intelligent Technology AG
Original Assignee
Saurer Intelligent Technology 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 Saurer Intelligent Technology AG filed Critical Saurer Intelligent Technology AG
Priority to EP21156375.4A priority Critical patent/EP4043625B1/fr
Priority to CN202210117711.1A priority patent/CN114908441B/zh
Priority to JP2022018835A priority patent/JP7851738B2/ja
Publication of EP4043625A1 publication Critical patent/EP4043625A1/fr
Application granted granted Critical
Publication of EP4043625B1 publication Critical patent/EP4043625B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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 yarn-forming element, an air spinning nozzle comprising such a yarn-forming element and a method for producing such a yarn-forming element.
  • Yarn-forming elements for spinning devices are known in a variety of configurations from the prior art.
  • Yarn-forming elements are used to produce an air-spun yarn from a fiber sliver coming from a drafting system, which is fed in a controlled manner into a spinneret that includes the yarn-forming element, by means of spinning compressed air fed into the spinneret to generate a turbulent air flow.
  • the air-spun thread is discharged from the spinneret via the yarn-forming element.
  • a yarn formation element is, for example, from the references EP 3 293 294 A1 , WO 2010/034416 A1 and EP 2 573 218 A2 known, in which the Garn Strukturselement is formed of several composite components. Due to the fluid flows used for spinning, on the one hand to spin the sliver into a thread using spinning compressed air and on the other hand to discharge the air-spun thread, a particularly precise and tight connection between the individual components must be produced, which means that a particularly complex and cost-intensive production with very little tolerances is necessary.
  • the yarn-forming elements of the prior art also have the disadvantage that fibers definitely get caught at the separation points or seams of the individual components and are thereby detached from the thread, which impairs the strength of the thread and on the other hand leads to an accumulation of detached fibers at the separation points, which can also impair the spinning result.
  • the invention is therefore based on the object of providing a yarn-forming element which can be produced at least in a cost-effective manner and, in particular, is also of simple construction. Furthermore, preferably, the yarn-forming element proposed with the invention should enable a spinning process with improved accuracy and efficiency, in particular the Contamination by detached fibers can be reduced during spinning and the piecing process.
  • the yarn-forming element for an air spinning nozzle comprises a spinning cone with a cone tip forming a first end face with an inlet opening for receiving a yarn. Furthermore, a channel body is provided which has a second end face with an outlet opening for discharging a thread from the yarn-forming element, the channel body and the spinning cone being connected to one another.
  • a passage passes through the channel body and the spinning cone to connect the inlet opening with the outlet opening for passage of the thread. The thread taken up by the inlet opening can consequently be guided via the passage to the outlet opening and be discharged out of the yarn-forming element through the outlet opening.
  • the yarn-forming element is characterized in that the spinning cone has a truncated cone-like partial segment which extends in the direction of the second end face with an increasing distance between its inner surface side and an outer surface side of the channel body radially delimiting the passage, forming an intermediate space.
  • the yarn-forming element can at least be designed to save material and consequently be more cost-effective.
  • the truncated cone-shaped sub-segment can be arranged in a preferred manner directly or via at least one further sub-segment lying in between adjoining a sub-segment forming the cone tip. This allows the cone-shaped area of the spinning cone to be designed as required in a direction pointing from the inlet opening to the outlet opening, for example taking into account a fiber length to be spun, whether short, medium or long staple fibers.
  • the spinning cone has a cylindrical sub-segment into which the truncated cone-like sub-segment merges on its side facing away from the cone tip, with an inner surface side of the cylindrical Sub-segment is spaced to the outer surface side of the channel body while continuing the gap formed.
  • the yarn-forming element can thus also be provided with a horizontal, outer stop surface to save material, via which the yarn-forming element can be positioned appropriately and very precisely within the spinneret to a sliver feed of the spinneret, via which the sliver is fed to the yarn-forming element.
  • the intermediate space is preferably accessible or open from a direction running from the outlet opening to the inlet opening.
  • the end of the spinning cone facing the second end face is spaced apart from the outer surface side of the channel body in such a way that the external space bordered by the spinning cone can communicate with an area surrounding the spinning cone.
  • a stabilization element suitable for stabilizing the position of the yarn-forming element can engage in the intermediate space.
  • the channel body protrudes beyond the spinning cone in the direction of the second end face.
  • the channel body consequently has such a length along the passage that the second end face or the outlet opening projects towards the end of the spinning cone facing this second end face or the outlet opening, forming a distance.
  • the length of the channel body can be aligned with an outer surface side of the cover element or spaced therefrom as required.
  • the cylindrical sub-segment preferably has a first sub-segment and a second sub-segment, with an outside diameter of the first sub-segment being different from an outside diameter of the second sub-segment.
  • the first sub-segment and the second sub-segment are connected to one another via a step-like increase in their outer diameter.
  • the outer surface sides of the first and second partial segments merge into one another in a stepped manner.
  • a stop acting along the passage can be provided for a fastening element engaging on the outside of the yarn-forming element, in order to be able to reliably position the yarn-forming element within the spinneret in the direction of passage.
  • the first sub-segment is particularly preferably arranged along the channel body closer to the tip of the cone than the second sub-segment, with the outer diameter of the second sub-segment being larger than the outer diameter of the first sub-segment.
  • the section of the second sub-segment that protrudes radially beyond the first sub-segment provides a stop, as described above, on a side of the second sub-segment that faces the inlet opening, and a further stop on a side of the second sub-segment that faces the outlet opening, over which the second sub-segment and thus the Garn Strukturselement can be clamped or locked in position via clamping or fastening means of the spinneret. This allows easy and safe assembly of the yarn-forming element within the spinneret.
  • the cylindrical sub-segment has a first sub-segment and a second sub-segment, with an inside diameter of the first sub-segment being equal to an inside diameter of the second sub-segment.
  • the cylindrical sub-segment is formed with its inner surface side equidistant to the outer surface side of the channel body over its extension length running along the channel body.
  • the yarn-forming element has a three-segmented passage.
  • the passage preferably comprises at least three segments, each with different internal diameters, with two consecutive segments merging seamlessly into one another with the interposition of a transition area.
  • the transition area consequently connects a segment of the passage with a diameter that is different from a diameter of the following segment along the passage.
  • Such transition areas favor fluid flows within the passageway.
  • a first passage segment, which adjoins the inlet opening has the smallest inner diameter
  • a third passage segment, which adjoins the outlet opening has the largest inner diameter.
  • An intermediate second passage segment includes an inner diameter that is greater than the inner diameter of the first passage segment but less than the inner diameter of the third inner diameter.
  • the passage consequently widens from the inlet opening to the outlet opening.
  • the yarn-forming element can consist of any material
  • the yarn-forming element is formed in one piece from one piece, whereby particularly good guidance of the fibers or the thread and a particularly seamless surface that is free of severing and connection points can be designed in a simple manner can.
  • the yarn-forming element can be formed using an additive manufacturing process, which can be used to reliably avoid separation and connection points.
  • Possible additive manufacturing processes can be, for example, 3D printing, Selective Laser Melting (SLM), Electron Beam Melting (EBM), Binder Jetting (BJ) and/or Fused Deposition Modeling (FDM).
  • the workpiece can also be sintered, in particular if the yarn-forming element is to be formed completely from a ceramic material.
  • the stereolithography process SLA can also be used to form the yarn-forming element from the ceramic material.
  • the yarn-forming element can preferably have a ceramic coating on at least all fiber-guiding surface sections in order to provide a particularly smooth, stable and also resistant surface.
  • at least the outer surface side of the spinning cone and/or the inner surface sides of the passage has a ceramic coating.
  • the yarn-forming element is formed rotationally symmetrically and/or mirror-symmetrically to a central longitudinal axis of the passage.
  • the latter configuration is preferred in particular when the channel body is not to be shaped in a rotationally symmetrical manner.
  • the symmetrical design of the yarn-forming element favors the production of the same.
  • an air spinning nozzle which has a yarn-forming element as described above.
  • Figures 1 and 2 12 show, in a schematic side and sectional view, a yarn-forming element 1 molded in one piece from a ceramic material according to an exemplary embodiment of the present invention.
  • the yarn-forming element 1 comprises a spinning cone 2 with a cone tip 3, which forms a first end face 4 with an inlet opening 5 for the yarn-forming element 1.
  • the yarn-forming element 1 also includes a channel body 6 which forms a second end face 7 with an outlet opening 8 for the yarn-forming element 1 .
  • the channel body 6 is seamless due to the formation of the Garn Strukturselements 1 in one piece spinning cone 2 over.
  • the channel body 6 and the spinning cone 2 are passed by a passage 9, via which the inlet opening 5 and the outlet opening 8 are communicatively connected to one another for the passage of a thread.
  • the passage 9 is divided into three segments 18, 19, 20, each with a different inner diameter, with two consecutive segments 18, 19, 20 merging into one another seamlessly or without any separation or connection points with the interposition of a transition region 21, 22.
  • a first passage segment 18, which adjoins the inlet opening 5, has the smallest inner diameter
  • a third passage segment 20, which adjoins the outlet opening 8 has the largest inner diameter.
  • An intermediate second passage segment 19, bordered by a first 21 and second transition region 22, via which the first 18 and second passage segment 20 connect, has an inner diameter that is larger than the inner diameter of the first passage segment 18, but smaller than the inner diameter of the third Inner diameter is 20.
  • the passage 9 consequently widens from the inlet opening 5 to the outlet opening 8 .
  • the spinning cone 2 has a truncated cone-shaped partial segment 10 which extends in the direction of the second end face 7 with an increasing distance from its inner surface side 11 to an outer surface side 12 of the channel body 6 radially delimiting the passage 9 , forming an intermediate space 13 .
  • the truncated cone-shaped sub-segment 10 is adjoined by a cylindrical sub-segment 14 assigned to the spinning cone 2, into which the truncated cone-shaped sub-segment 10 merges seamlessly on its side facing away from the cone tip 3 due to the formation of the yarn-forming element 1 from one piece, i.e. without any separation or connection points.
  • the cylindrical sub-segment 14 comprises a first sub-segment 16 and a second sub-segment 17 , an inside diameter of the first sub-segment 16 being equal to an inside diameter of the second sub-segment 17 .
  • the outside diameter of the first sub-segment 16 is smaller than the outside diameter of the second sub-segment 17 .
  • the second sub-segment 17 is consequently formed with a greater material thickness than the first sub-segment 16 .
  • the first 16 and second sub-segment 17 merge into one another in a step-like manner on the outside, creating a stop both in the direction of the inlet opening 5 and a stop in the direction of the outlet opening 8 is trained pointing.
  • the intermediate space 13 delimited on the outside by the truncated cone-shaped sub-segment 10 and the cylindrical sub-segment 14 is accessible from a direction running from the outlet opening 8 to the inlet opening 5, with the channel body 6 protruding beyond the spinning cone 2 in the direction of the second end face 7 or the outlet opening 8.
  • the yarn-forming element 1 is formed rotationally symmetrically with respect to a central longitudinal axis M of the passage 9 .
  • the yarn-forming element 1 is suitable for an air spinning nozzle, by means of which an air-spun thread can be produced.
  • the air spinning nozzle has appropriate fastening means for receiving the yarn-forming element 1 in order to be able to position the yarn-forming element 1 opposite a sliver feed with the cone tip 3 exactly and as required.
  • the air spinneret can comprise engagement elements which come into contact with the radial outer surface side of the first partial segment 16 and with the stop and with the surface side of the second partial segment 17 pointing towards the outlet opening 8 .
  • the yarn-forming element 1 can be positioned reliably and stably within the air spinning nozzle, which also allows the yarn-forming element 1 to be exchanged without difficulty.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP21156375.4A 2021-02-10 2021-02-10 Élément de filature Active EP4043625B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP21156375.4A EP4043625B1 (fr) 2021-02-10 2021-02-10 Élément de filature
CN202210117711.1A CN114908441B (zh) 2021-02-10 2022-02-08 纱线形成件
JP2022018835A JP7851738B2 (ja) 2021-02-10 2022-02-09 糸形成要素

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21156375.4A EP4043625B1 (fr) 2021-02-10 2021-02-10 Élément de filature

Publications (2)

Publication Number Publication Date
EP4043625A1 true EP4043625A1 (fr) 2022-08-17
EP4043625B1 EP4043625B1 (fr) 2025-04-02

Family

ID=74586949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21156375.4A Active EP4043625B1 (fr) 2021-02-10 2021-02-10 Élément de filature

Country Status (2)

Country Link
EP (1) EP4043625B1 (fr)
CN (1) CN114908441B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119800559B (zh) * 2025-02-10 2025-12-16 东华大学 一种喷气涡流纺引纱锥体及喷气涡流纺纱方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040218A1 (de) * 2007-08-25 2009-02-26 Oerlikon Textile Gmbh & Co. Kg Spinnvorrichtung
WO2010034416A1 (fr) 2008-09-29 2010-04-01 Maschinenfabrik Rieter Ag Groupe de filature à buse d’air comprenant un composant en forme de broche
EP2573218A2 (fr) 2011-09-21 2013-03-27 Maschinenfabrik Rieter AG Pointe de filature pour arbre creux d'un métier à tisser
EP3115485A1 (fr) * 2015-07-06 2017-01-11 Murata Machinery, Ltd. Bloc de buses, fileuse pneumatique et fileuse
JP2017025437A (ja) * 2015-07-23 2017-02-02 村田機械株式会社 中空ガイド軸体ユニット、空気紡績装置、紡績機、及び中空ガイド軸体ユニットの組立方法
EP3293294A1 (fr) 2016-09-07 2018-03-14 Maschinenfabrik Rieter AG Élément de formage des fils et bloc de filage pour une machine à filer à jet d'air
EP3428330A1 (fr) * 2017-07-12 2019-01-16 Murata Machinery, Ltd. Dispositif de filature à air

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63203824A (ja) * 1987-02-18 1988-08-23 Murata Mach Ltd 紡績糸の製造装置
DE102012110315A1 (de) * 2012-10-29 2014-04-30 Maschinenfabrik Rieter Ag Garnbildungselement für eine Luftspinnmaschine mit einem Einsatz sowie damit ausgerüstete Spinndüse
CH712409A1 (de) * 2016-04-29 2017-10-31 Rieter Ag Maschf Luftspinnmaschine sowie Verfahren zur Herstellung eines Garns.
CN107904710A (zh) * 2017-12-21 2018-04-13 苏州市星京泽纤维科技有限公司 一种新型涡流纺纱喷嘴结构
CN211972536U (zh) * 2019-12-20 2020-11-20 苏州世祥生物纤维有限公司 一种喷气涡流纺的纺纱机构

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040218A1 (de) * 2007-08-25 2009-02-26 Oerlikon Textile Gmbh & Co. Kg Spinnvorrichtung
WO2010034416A1 (fr) 2008-09-29 2010-04-01 Maschinenfabrik Rieter Ag Groupe de filature à buse d’air comprenant un composant en forme de broche
EP2573218A2 (fr) 2011-09-21 2013-03-27 Maschinenfabrik Rieter AG Pointe de filature pour arbre creux d'un métier à tisser
EP3115485A1 (fr) * 2015-07-06 2017-01-11 Murata Machinery, Ltd. Bloc de buses, fileuse pneumatique et fileuse
JP2017025437A (ja) * 2015-07-23 2017-02-02 村田機械株式会社 中空ガイド軸体ユニット、空気紡績装置、紡績機、及び中空ガイド軸体ユニットの組立方法
EP3293294A1 (fr) 2016-09-07 2018-03-14 Maschinenfabrik Rieter AG Élément de formage des fils et bloc de filage pour une machine à filer à jet d'air
EP3428330A1 (fr) * 2017-07-12 2019-01-16 Murata Machinery, Ltd. Dispositif de filature à air

Also Published As

Publication number Publication date
CN114908441A (zh) 2022-08-16
EP4043625B1 (fr) 2025-04-02
JP2022122852A (ja) 2022-08-23
CN114908441B (zh) 2024-05-14

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