EP3680373A1 - Élément de guidage de fibre pour une buse de filage ainsi que buse de filage équipée d'un tel élément de guidage de fibre - Google Patents

Élément de guidage de fibre pour une buse de filage ainsi que buse de filage équipée d'un tel élément de guidage de fibre Download PDF

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Publication number
EP3680373A1
EP3680373A1 EP20150075.8A EP20150075A EP3680373A1 EP 3680373 A1 EP3680373 A1 EP 3680373A1 EP 20150075 A EP20150075 A EP 20150075A EP 3680373 A1 EP3680373 A1 EP 3680373A1
Authority
EP
European Patent Office
Prior art keywords
guide element
fiber guide
fiber
area
longitudinal axis
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
EP20150075.8A
Other languages
German (de)
English (en)
Other versions
EP3680373B1 (fr
Inventor
Markus Kübler
Gernot Schaeffler
Alexander Fuchs
David Hensle
Thomas Landsinger
Janine Mockler
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 EP3680373A1 publication Critical patent/EP3680373A1/fr
Application granted granted Critical
Publication of EP3680373B1 publication Critical patent/EP3680373B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/02—Stationary rods or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/12—Tubes
    • 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
    • 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

  • the present invention relates to a fiber guide element for a spinneret of an air spinning machine, the fiber guide element being used in the intended use to guide a fiber structure entering the spinneret in a predetermined transport direction, the fiber guide element having a fiber guide surface for guiding the fiber structure, and wherein the fiber guide surface has an inlet area, comprises a central region downstream of the inlet region in the said transport direction and an outlet region downstream of the central region in the mentioned transport direction.
  • Corresponding spinnerets are used to produce a yarn from an elongated fiber structure with the aid of a vortex air flow generated by air nozzles within a swirl chamber of the spinneret.
  • the fiber structure is supplied by a drafting system that smoothes the fiber structure before it enters the spinneret.
  • the inlet opening of the spinneret is formed or delimited by a fiber guiding element which serves to guide the fibers of the fiber assembly entering the spinneret.
  • the outer fibers of the fiber assembly After entering the spinneret, the outer fibers of the fiber assembly are wound around the inner fibers (core fibers) in the region of the inlet of a generally spindle-shaped yarn-forming element, so that a yarn is formed as a result, which can finally be drawn off from the swirl chamber and thus from the spinneret via a take-off channel of the yarn-forming element and can be wound onto a sleeve with the aid of a winding device.
  • various fiber guide elements are already known.
  • the aim of these fiber guide elements is generally to deflect or redirect the fiber structure transversely to the direction of transport, this deflection or deflection acting as a swirl stop and preventing propagation of the swirl of the fiber structure from the swirl chamber to the outside of the spinneret.
  • the example is purely exemplary EP 2 009 151 B1 or the JP 2773670 B2 referred.
  • the object of the present invention is to propose a fiber guiding element which is distinguished by a particularly good twist-stop effect while still guiding the fiber structure gently.
  • the fiber guide element according to the invention also has a fiber guide surface for guiding a fiber assembly.
  • the fiber guide surface is composed of an inlet area, a central area downstream of the inlet area in the transport direction mentioned and an outlet area downstream of the central area in the transport direction mentioned.
  • the areas mentioned are used in the intended use of the fiber guide element (ie after installation in a spinneret Air spinning machine) from the fiber structure in the direction of transport.
  • the areas thus jointly form the fiber guide surface of the fiber guide element.
  • the geometry of the central region differs from that of the inlet region and also the geometry of the outlet region in that only the central region is rotated (at least in sections) about the longitudinal axis of the fiber guide element.
  • both the inlet area and the outlet area are each designed to be untwisted with respect to the longitudinal axis of the fiber guide element.
  • the path along which the fiber structure is guided in the inlet area and in the outlet area lies in each case in one plane or on a convex or concave, preferably channel-shaped, surface (depending on how the inlet area or the outlet area are designed geometrically).
  • the inlet area, the middle area and / or the outlet area is formed at least in sections by a flat, concave, preferably channel-shaped, or convexly curved surface.
  • the inlet area is in the form of a convex or concave surface, it is advantageous if the corresponding surface section has a radius of curvature R at least in sections, the amount of which is 1 mm or greater.
  • the inlet area is rotated relative to the outlet area by an angle ⁇ with respect to the longitudinal axis, the amount of which is between 1 ° and 120 °, preferably between 70 ° and 90 °, is.
  • the angle is the angle that a dividing line between the inlet area and the middle area includes with a dividing line between the middle area and the outlet area.
  • the slope of the central region is preferably constant when viewed in the direction of transport.
  • the middle region and the outlet region are delimited from one another by a dividing line, the smallest distance A between the dividing line and the longitudinal axis of the fiber guide element being between 0.5 mm and 1.5 mm.
  • the distance between the outlet area following the central area and the longitudinal axis should be less than the distance A.
  • the outlet area has a first outlet section adjoining the central region in the transport direction mentioned and a second outlet section adjoining the first outlet section in the transport direction mentioned.
  • both outlet sections are flat. It would also be conceivable to design the first outlet section and / or the second outlet section as a concave or convex surface.
  • the first outlet section forms an angle ⁇ with the second outlet section, the amount of which is between 180 ° and 160 °. While in the first-mentioned case both outlet sections lie in a common plane or at least touch a common plane, the first outlet section is inclined in relation to the second outlet section in the second case.
  • the inclination is preferably such that in the region of the transition between the first outlet section and the second outlet section, an elevation, in particular an edge, directed away from the longitudinal axis of the fiber guide element is produced. This increase must be passed through by the fiber structure on its way into the swirl chamber, the increase in turn acting as a twist stop.
  • first outlet section and / or the second outlet section form an angle with the longitudinal axis of the fiber guide element, the amount of which is between 5 ° and 25 °, preferably between 10 ° and 20 °. It is advantageous if the first outlet section and the second outlet section enclose the same angle with the longitudinal axis. However, it is also conceivable that the corresponding angles are different, so that the above-mentioned increase occurs. In this case, the angle between the longitudinal axis and the first outlet section could also be greater than 25 °. In particular, amounts of up to 70 ° are possible.
  • outlet area or the first outlet section and / or the second outlet section are formed at least in sections by a flat surface.
  • the fibers of the fiber assembly are guided in a relatively straight line.
  • the central region does not have any flat sections.
  • the second outlet section is formed by a lateral flattening of an otherwise frustoconical end section of the fiber guide element.
  • the flattening is preferably a flat surface.
  • the end section of the fiber guide element is thus partially frustoconical, the remaining area of the end section being formed by the flattening.
  • the level at which the Flattening lies cut outside the fiber guide element with its longitudinal axis.
  • the partially frustoconical end section preferably has a top surface which is delimited by a boundary line of the flattening and a pitch circle.
  • the top surface should run perpendicular to the longitudinal axis of the fiber guide element.
  • the pitch circle has a diameter whose amount is between 1 mm and 3 mm.
  • the partially frustoconical end section should have a height, the amount of which is between 0.5 mm and 1.5 mm.
  • the partially frustoconical end section has a lateral surface which intersects the top surface of the fiber guide element at an angle ⁇ , the amount of which lies between 10 ° and 50 °, preferably between 20 ° and 40 °.
  • An angle of essentially 30 ° is preferred. Since the end section after the installation of the fiber guide element is arranged in a spinneret in the area of the air nozzles, through which the compressed air necessary for yarn production is blown in, the angle mentioned has an influence on the rotation of the fibers of the fiber assembly.
  • the angular range mentioned has proven to be advantageous.
  • the fiber guide element has, at least in sections, an outer surface lying on an imaginary cylinder.
  • the outer surface mentioned is the respective rear side of the inlet area, the middle area and the outlet area.
  • the imaginary cylinder has an axis of symmetry, which preferably runs parallel or congruent with the longitudinal axis of the fiber guide element.
  • the axis of symmetry should run through the top surface of the end section mentioned above.
  • the imaginary cylinder has an outer diameter, the amount of which is between 3 mm and 6 mm, preferably between 4 mm and 5 mm.
  • the fiber guide element has a longitudinal extent extending in the direction of the longitudinal axis, the amount of which is between 8 mm and 16 mm, preferably between 10 mm and 14 mm. While a short total length of the fiber guide element is preferred in the entrance area of the spinneret for reasons of space, a certain length is necessary in order to achieve the desired guidance of the fiber structure and the twist stop effect associated therewith.
  • the inlet area has a longitudinal extent extending in the direction of the longitudinal axis, the amount of which is between 2 mm and 7 mm, preferably between 3 mm and 6 mm.
  • the length mentioned should not be less than 2 mm, since the inlet area is intended to cause a gradual lateral deflection of the fiber structure, which would only be possible abruptly if the length were shorter.
  • the central region has a longitudinal extent extending in the direction of the longitudinal axis, the amount of which is between 2 mm and 9 mm, preferably between 4 mm and 7 mm.
  • An amount in the area mentioned is sufficient to enable the above-mentioned angle between the inlet area and the outlet area without the fibers of the fiber assembly being deflected too much in a helical manner.
  • the outlet area has a longitudinal extent extending in the direction of the longitudinal axis, the amount of which is between 1 mm and 4 mm, preferably between 2 mm and 3 mm.
  • the outlet area is preferably inclined in the direction of the longitudinal axis, so that the lateral deflection of the fiber structure in the area of the outlet area is viewed in the direction of transport is reduced. This reduction in the deflection should also take place gradually, the longitudinal extent mentioned having proven itself to be positive.
  • a spinneret for an air spinning machine comprising, as is customary in the prior art, a fiber guide element.
  • the fiber guide element is arranged in the area of the inlet of the spinneret and guides the fiber structure entering the spinneret.
  • the invention provides for the fiber guide element to be designed in accordance with the previous or following description.
  • the spinneret comprises the components or sections necessary for the yarn production, such as in particular a yarn forming element with an extraction channel and several air nozzles, via which compressed air can be introduced into the swirl chamber during operation of the spinneret.
  • the direction of rotation in which the central region is rotated at least in sections around the longitudinal axis, corresponds to the direction of rotation of the vortex air flow when viewed in the transport direction.
  • the central region of the fiber guide element in relation to the longitudinal axis of the fiber guide element and in the direction of transport of the fiber assembly in the region of a fiber assembly inlet of the spinneret, has the same direction of rotation (clockwise or counterclockwise) as the vortex air flow generated by the air nozzles within the swirl chamber.
  • the fiber structure is rotated through the central region in a direction about the longitudinal axis which corresponds to the direction of rotation of the fluidizing air.
  • the direction of rotation of the vortex air is in turn determined by the alignment of the air nozzles.
  • Figure 1 shows a section of a spinneret 2 of an air spinning machine. Of the spinneret 2, only the inlet area relevant to the understanding of the present invention for a fiber structure 3 and a part of the swirl chamber 16 adjoining the predetermined transport direction T of the fiber structure 3 are shown.
  • a spindle-shaped yarn-forming element 13 which is known in principle from the prior art, projects into the swirl chamber 16. Also shown are air nozzles 14, via which compressed air is introduced into the spinneret 2 during operation of the spinneret 2, the air nozzles 14 being arranged in such a way that a swirling air flow occurs in the region of the yarn formation element 13. Due to the vortex air flow, the outer fibers of the fiber assembly 3 entering the spinneret 2 are wound around the inner fibers, so that a yarn 17 is formed in the area of the yarn forming element 13, which yarn can finally be drawn off from the spinneret 2 via the draw-off channel 15.
  • the spinneret 2 has a fiber guide element 1 designed according to the invention, which can be fixed in the spinneret 2, for example, by positive or non-positive connection.
  • the fiber guide element 1 itself is in the Figures 2 to 5 shown in more detail, whereby Figure 5 a top view of the fiber guide element 1 (based on Figure 2 with a view from above).
  • the fiber guide element 1 has a fiber guide surface, along which the fiber structure 3 is guided when it enters the spinneret 2.
  • this fiber guide surface is composed of three areas.
  • the fiber guide element 1 has an inlet area 4, with which the fiber structure 3 comes into contact first when it is introduced into the spinneret 2 in the intended transport direction T.
  • the invention also provides that only the central region 5 is formed by a surface that is rotated with respect to the longitudinal axis L of the fiber guide element 1.
  • the fibers are thereby guided along the central region 5 on an essentially helical or spiral path.
  • the inlet area 4 and the outlet area 6, which is separated from the central area 5 by a dividing line 7, are formed by individual surface sections which are either flat or convex in the direction of the fiber structure 3.
  • the smallest distance between the dividing line 7 and the longitudinal axis L of the fiber guide element 1 is identified by the reference symbol A.
  • the outlet area 6 can be formed by a single surface, it is particularly advantageous if it is composed of a first outlet section 8 and a second outlet section 9 following in the transport direction T. While the first outlet section 8 can be formed by a cut surface of a basically cylindrical base body of the fiber guide element 1, it is advantageous if the second outlet section 9 is formed as a flat 10 of an otherwise frustoconical end section 11 of the fiber guide element 1.
  • inlet area 4 it is advantageous if it is not formed by a flat surface, but by a surface that is convexly curved in the direction of the fiber structure 3, the radius of curvature being identified by the reference symbol R.
  • the fiber guide element 1 can be manufactured from an originally cylindrical base body, individual sections of the base body being removed in such a way that the final shape with the named areas 4, 5 and 6 of the fiber guide surface and the partially frustoconical end section 11 is created.
  • the fiber guide element 1 can have an outer surface 12 lying on an imaginary cylinder with a diameter D2, which adjoins the individual areas 4, 5 and 6 in the circumferential direction.
  • the axis of symmetry of the imaginary cylinder is otherwise congruent with the above-mentioned longitudinal axis L of the fiber guide element 1.
  • the frustoconical end section 11 also has a cover surface 18, which is preferably perpendicular to a longitudinal axis L of the fiber guide element 1.
  • the fiber guide element 1 has a longitudinal dimension I extending in the direction of the longitudinal axis L, which corresponds in principle to the total length of the fiber guide element 1.
  • the inlet area 4 likewise has a defined longitudinal extent II.
  • the longitudinal extent of the central region 5 is provided with the reference symbol III.
  • the outlet area 6 also has a certain longitudinal extent, identified by the reference symbol IV.
  • FIGS. 2 and 5 show the angle ⁇ between the lateral surface of the partially frustoconical end section 11 and the top surface 18 of the fiber guide element 1, the angle ⁇ between the first outlet section 8 and the second outlet section 9, the angle ⁇ between the longitudinal axis L and the first outlet section 8 and the second outlet section 9 and the angle ⁇ between the inlet region 4 and the outlet region 6, which arises from the rotation of the central region 5.
  • first outlet section 8 can be tilted relative to the second outlet section 9 by an angle between 0 ° and 20 °, so that the sections 8, 9 mentioned do not have to lie in a common plane.
  • FIG. 6 shows Figure 6 the outlet area of a further embodiment of a fiber guide element 1 according to the invention (partially cut off below).
  • the outlet area 6 can be formed at least in sections by a concave, in the example shown, groove-shaped surface.
  • this shaping can additionally or alternatively also be implemented in the inlet area 4 or middle area 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP20150075.8A 2019-01-08 2020-01-02 Élément de guidage de fibre pour une buse de filage ainsi que buse de filage équipée d'un tel élément de guidage de fibre Active EP3680373B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019100306.7A DE102019100306A1 (de) 2019-01-08 2019-01-08 Faserführungselement für eine Spinndüse sowie damit ausgestattete Spinndüse

Publications (2)

Publication Number Publication Date
EP3680373A1 true EP3680373A1 (fr) 2020-07-15
EP3680373B1 EP3680373B1 (fr) 2023-03-01

Family

ID=69104313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20150075.8A Active EP3680373B1 (fr) 2019-01-08 2020-01-02 Élément de guidage de fibre pour une buse de filage ainsi que buse de filage équipée d'un tel élément de guidage de fibre

Country Status (3)

Country Link
EP (1) EP3680373B1 (fr)
CN (1) CN111411426B (fr)
DE (1) DE102019100306A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR77171E (fr) * 1957-10-15 1962-01-27 Chr Mann Maschinenfabrik Guide-bande ou mèche pour l'enroulement de bobines croisées sur des étireuses ou des bancs à broches
DE2235868A1 (de) * 1972-07-21 1974-01-31 Konrad Goetzfried Verfahren und vorrichtung zum pneumatischen falschdrahtspinnen eines fadens
FR2584743A1 (fr) * 1985-07-11 1987-01-16 Schlumberger Cie N Conduit pour le transport d'un ruban de fibres textiles sur une distance relativement importante
JP2773670B2 (ja) 1995-02-10 1998-07-09 村田機械株式会社 紡績装置
EP1335050A2 (fr) * 2002-02-12 2003-08-13 Maschinenfabrik Rieter Ag Machine textile comprennant un canal pour alimenter des fibres et une surface pour guider des fibres
EP2009151B1 (fr) 2007-06-21 2012-05-23 Murata Machinery, Ltd. Dispositif de filature à jet d'air
CN103603094B (zh) * 2013-08-05 2015-12-09 东华大学 一种侧向入口的喷气涡流纺纱装置
CN103924333B (zh) * 2014-04-17 2016-02-03 江阴市华方新技术科研有限公司 一种纱线导引装置
EP3243942A1 (fr) * 2016-04-29 2017-11-15 Savio Macchine Tessili S.p.A. Métier à filer de type air-jet

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2697575B2 (ja) * 1993-09-08 1998-01-14 村田機械株式会社 紡績装置
JP2708000B2 (ja) * 1995-02-10 1998-02-04 村田機械株式会社 紡績装置
DE102012101001A1 (de) * 2012-02-08 2013-08-08 Maschinenfabrik Rieter Ag Garnbildungselement für eine Spinnstelle einer Luftspinnmaschine mit einer wendelförmigen Führung sowie Verfahren zur Herstellung eines Garns
CH708620A1 (de) * 2013-09-30 2015-03-31 Rieter Ag Maschf Faserführungselement für eine Spinndüse einer Luftspinnmaschine sowie damit ausgestattete Spinnstelle.

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR77171E (fr) * 1957-10-15 1962-01-27 Chr Mann Maschinenfabrik Guide-bande ou mèche pour l'enroulement de bobines croisées sur des étireuses ou des bancs à broches
DE2235868A1 (de) * 1972-07-21 1974-01-31 Konrad Goetzfried Verfahren und vorrichtung zum pneumatischen falschdrahtspinnen eines fadens
FR2584743A1 (fr) * 1985-07-11 1987-01-16 Schlumberger Cie N Conduit pour le transport d'un ruban de fibres textiles sur une distance relativement importante
JP2773670B2 (ja) 1995-02-10 1998-07-09 村田機械株式会社 紡績装置
EP1335050A2 (fr) * 2002-02-12 2003-08-13 Maschinenfabrik Rieter Ag Machine textile comprennant un canal pour alimenter des fibres et une surface pour guider des fibres
EP2009151B1 (fr) 2007-06-21 2012-05-23 Murata Machinery, Ltd. Dispositif de filature à jet d'air
CN103603094B (zh) * 2013-08-05 2015-12-09 东华大学 一种侧向入口的喷气涡流纺纱装置
CN103924333B (zh) * 2014-04-17 2016-02-03 江阴市华方新技术科研有限公司 一种纱线导引装置
EP3243942A1 (fr) * 2016-04-29 2017-11-15 Savio Macchine Tessili S.p.A. Métier à filer de type air-jet

Also Published As

Publication number Publication date
DE102019100306A1 (de) 2020-07-09
EP3680373B1 (fr) 2023-03-01
CN111411426B (zh) 2023-06-16
CN111411426A (zh) 2020-07-14

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