EP1576216A1 - Boitier de filieres destine a un dispositif de filieres a air - Google Patents

Boitier de filieres destine a un dispositif de filieres a air

Info

Publication number
EP1576216A1
EP1576216A1 EP03769446A EP03769446A EP1576216A1 EP 1576216 A1 EP1576216 A1 EP 1576216A1 EP 03769446 A EP03769446 A EP 03769446A EP 03769446 A EP03769446 A EP 03769446A EP 1576216 A1 EP1576216 A1 EP 1576216A1
Authority
EP
European Patent Office
Prior art keywords
spinneret housing
spinneret
nozzle channels
staple fiber
housing according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03769446A
Other languages
German (de)
English (en)
Inventor
Peter Schweier
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 EP1576216A1 publication Critical patent/EP1576216A1/fr
Withdrawn legal-status Critical Current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
    • 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 spinneret housing for an air nozzle spinning device for producing a spun thread from a staple fiber structure, with a flow channel which is surrounded by a sleeve-like wall, which in turn is penetrated by a closed cross-section blowing nozzle channels.
  • a spinneret housing of this type is known, for example, from US Pat. No. 4,480,435 or German Offenlegungsschrift DE 37 32 708 A1.
  • the blow nozzle channels provided here have a very small cross section and must be positioned extremely precisely so that a vortex flow intended for the spinning process can be generated.
  • the blower nozzle channels are drilled, and in order to keep the length of the bores as short as possible, an insert is fitted in the region of the blower nozzle channels, which allows drilling of particularly small diameters.
  • the spinneret housing according to DE 37 32 708 A1 is formed in two parts, with a nozzle slot being incorporated in one part housing, which is open on one side and then completed by covering with the other part housing to form a closed blowing nozzle channel. Both variants have in common that the blow nozzle ducts are retrofitted to the spinneret housing, which naturally leads to problems of exact reproducibility.
  • the invention is based on the object of producing the blowing nozzle channels of the spinneret housing in a simple and inexpensive manner and in particular of ensuring exact reproducibility.
  • the object is achieved in that the spinneret housing, including the flow duct and blowing nozzle ducts, is a one-piece component formed without cutting.
  • spinneret housings can in principle be produced by all possible types of die casting or injection molding processes, but since the spinneret housing is a wearing part, it is appropriate to manufacture the spinneret housing from oxide ceramic. By means of appropriately designed core inserts, the required cavities, primarily the flow channel and the blow nozzle channels, can then be molded in during production in a manner known per se. Since all spinneret housings are manufactured from one and the same tool, the dimensional accuracy and thus the exact reproducibility, in particular of the blow nozzle channels for large series, is guaranteed.
  • blowing nozzle channels can be arranged inclined in the running direction of the staple fiber structure, while alternatively the blowing nozzle channels can easily lie in a plane that is radial to the running direction of the staple fiber structure.
  • blowing nozzle channels are directed with their mouths against a conical ring surface which is inclined in the running direction of the staple fiber structure and surrounds the staple fiber structure and which is integrally formed on the spinneret housing.
  • the flow channel for the staple fiber dressing can contain a feed channel which is eccentrically delimited on one long side by a fiber guide surface integrally formed on the spinneret housing.
  • a fiber guide surface can contain, in a manner known per se, a deflection edge which acts as a swirl lock.
  • FIG. 1 shows a greatly enlarged illustration of an axial section through an air nozzle spinning device containing an inventive spinneret housing
  • FIG. 2 shows a section along section II-II of FIG. 1 through the spinneret housing alone
  • Figure 3 shows a cut spinneret housing similar to Figure 1 in another embodiment of the blow nozzle channels.
  • FIG. 1 shows an air jet spinning device with which a staple fiber dressing 2 fed through a feed channel 1 in the direction of travel A is given a rotation in a swirl chamber 3, so that a spun thread 4 is produced, which is drawn off in the draw-off direction B by a thread take-off channel 5.
  • the staple fiber dressing 2 can come from a drafting device or another drafting unit.
  • a fluid device generates a vortex flow in the vortex chamber 3 by blowing in compressed air through blowing nozzle channels 6 opening tangentially into the vortex chamber 3.
  • the compressed air emerging from the mouths 7 of the blow nozzle ducts 6 is discharged through an exhaust air duct 8. leads, which has an annular cross section arranged around the thread take-off channel 5 around a spindle-shaped stationary component 9.
  • the supply duct 1 forms, together with the exhaust air duct 8, a flow duct which is enclosed by a sleeve-like wall 10, which in turn is penetrated by the blowing nozzle ducts 6.
  • a deflection edge 12 of a fiber guide surface 13 is arranged as a twist lock, which is arranged eccentrically to the thread take-off channel 5 on a long side of the feed channel 1.
  • the deflection edge 12 is located directly in front of the inlet opening 14 of the thread take-off channel 5.
  • the fibers to be spun are held on the one hand in the staple fiber composite 2 and thus guided from the outlet opening 11 of the feed channel 1 into the thread take-off channel 5 essentially without giving rotation.
  • the fibers in the area between the feed channel 1 and the thread take-off channel 5 are exposed to the effect of the vortex flow, through which they or at least their end areas are driven radially away from the inlet opening 14 of the thread take-off channel 5.
  • the threads 4 produced with the described method therefore show a core of fibers or fiber regions running essentially in the longitudinal direction of the thread without substantial rotation and an outer region in which the fibers or fiber regions are rotated around the core.
  • this thread structure comes about because leading ends of fibers, in particular those whose trailing areas are still kept upstream in the feed channel 1, essentially reach the thread draw-off channel 5 directly, but trailing fiber areas, especially if they are in the entrance area of the feed channel 1 can no longer be held, pulled from the staple fiber structure 2 by the vortex formation and then rotated around the thread 4 that is formed.
  • fibers are bound at the same time both in the thread 4 being formed, as a result of which they are drawn through the thread take-off channel 5, and also exposed to the eddy current, which accelerates them centrifugally, i.e. away from the inlet opening 14 of the thread take-off channel 5, and draws them into the exhaust air channel 8 ,
  • the fiber areas drawn by the vortex flow from the staple fiber structure 2 form a fiber vortex opening into the inlet opening 14 of the thread take-off channel 5, the longer portions of which spiral around the outside of the spindle-shaped component 9 and in this spiral against the force of the flow in the exhaust air channel 8 against the inlet opening 14 of the thread take-off channel 5 are pulled.
  • blow nozzle channels 6 are described in more detail below with the addition of FIG. 2 to FIG. 1.
  • blowing nozzle channels 6 there are a total of four blowing nozzle channels 6 per air nozzle spinning device, each of which is provided with openings 7 and, as can best be seen from FIG. 2, are directed tangentially into the swirl chamber 3.
  • These blowing nozzle channels 6 are arranged in a spinneret housing 15, as will be described below, and have a closed cross section.
  • the blowing nozzle channels 6 run in a radial plane with respect to the running direction A of the staple fiber structure 2.
  • annular space 16 radially surrounding the spinneret housing 15 is connected to a compressed air source in a manner not shown.
  • the compressed air then arrives from the annular space 16 via axial recesses 17 of the spinneret housing 15 provided in the outer contour the individual blow nozzle channels 6.
  • the annular space 16 is sealed by a wall of a housing 18.
  • a conical ring surface 19 inclined in the running direction A of the staple fiber structure 2 is provided in direct connection to the mouths 7 of the blowing nozzle channels 6.
  • the compressed air emerging from the orifices 7 is diverted through the annular surface 19 in the running direction A of the staple fiber structure 2.
  • the conical ring surface 19 surrounds the staple fiber structure 2, the orifices 7 being directed tangentially against the ring surface 19.
  • the spinneret housing 15, including the flow channel 1, 8 and the blow nozzle channels 6, is a one-piece component formed without cutting.
  • the conical ring surface 19 and the fiber guide surface 13 with the deflection edge 12 are also integrally formed on this component.
  • the spinneret housing 15 is made from oxide ceramic, for example from aluminum oxide.
  • FIG. 3 shows a somewhat different embodiment of an air nozzle spinning device, those components which remained the same compared to the variant according to FIGS. 1 and 2 being provided with the same reference numerals. A repeated description can therefore be dispensed with.
  • blowing nozzle channels 20 which are inclined in the running direction A of the staple fiber structure 2.
  • the orifices 21 of the blow nozzle channels 20 are again tangential in the swirl chamber 3 directed.
  • a spinneret housing 22 is provided, which is a one-piece component formed without cutting.
  • the blow nozzle channels 20 start again in an annular space 23 which is connected to a compressed air source, not shown, and from which the compressed air is guided to the blow nozzle channels 20 via recesses 24. To the outside, the annular space 23 is covered by a housing 25.

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)

Abstract

L'invention concerne un boîtier de filières destiné à un dispositif de filières à air, conçu pour la fabrication d'un fil filé à partir d'une mèche de fibres discontinues. Ledit boîtier de filières comporte un canal d'écoulement (1, 8) entouré par une paroi (10) en forme de manchon. La paroi (10) est traversée par des canaux de filières de soufflage (6, 20). Le boîtier de filières selon l'invention, le canal d'écoulement et les canaux de filières de soufflage forment un composant monobloc formé sans enlèvement de copeaux.
EP03769446A 2002-12-20 2003-10-24 Boitier de filieres destine a un dispositif de filieres a air Withdrawn EP1576216A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10261778 2002-12-20
DE2002161778 DE10261778A1 (de) 2002-12-20 2002-12-20 Spinndüsengehäuse für eine Luftdüsenspinnvorrichtung
PCT/EP2003/011769 WO2004059052A1 (fr) 2002-12-20 2003-10-24 Boitier de filieres destine a un dispositif de filieres a air

Publications (1)

Publication Number Publication Date
EP1576216A1 true EP1576216A1 (fr) 2005-09-21

Family

ID=32404390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03769446A Withdrawn EP1576216A1 (fr) 2002-12-20 2003-10-24 Boitier de filieres destine a un dispositif de filieres a air

Country Status (6)

Country Link
EP (1) EP1576216A1 (fr)
JP (1) JP2006510819A (fr)
CN (1) CN1729322A (fr)
AU (1) AU2003278132A1 (fr)
DE (1) DE10261778A1 (fr)
WO (1) WO2004059052A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5249510B2 (ja) * 2006-02-10 2013-07-31 株式会社Ａｉｋｉリオテック 圧縮流体処理ノズル
JP2013067882A (ja) * 2011-09-21 2013-04-18 Murata Mach Ltd 糸巻取機、及び紡績糸の製造方法
ITUA20163006A1 (it) * 2016-04-29 2017-10-29 Savio Macch Tessili Spa Dispositivo di filatura di tipo air-jet
DE102019114500A1 (de) * 2019-05-29 2020-12-03 Maschinenfabrik Rieter Ag Drallelement für eine Spinndüse einer Luftspinnmaschine sowie Spinndüse

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3123517B2 (ja) * 1998-08-18 2001-01-15 村田機械株式会社 紡績ノズル部材
DE60009402T2 (de) * 1999-07-28 2005-03-10 Murata Kikai K.K. Spinnvorrichtung und Spinnverfahren
AT411467B (de) * 2000-01-12 2004-01-26 Sml Maschinengesellschaft Mbh Texturierdüse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004059052A1 *

Also Published As

Publication number Publication date
WO2004059052A1 (fr) 2004-07-15
DE10261778A1 (de) 2004-07-01
AU2003278132A1 (en) 2004-07-22
JP2006510819A (ja) 2006-03-30
CN1729322A (zh) 2006-02-01

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