EP1486594A1 - Tuyère de sortie de fil - Google Patents

Tuyère de sortie de fil Download PDF

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Publication number
EP1486594A1
EP1486594A1 EP03013005A EP03013005A EP1486594A1 EP 1486594 A1 EP1486594 A1 EP 1486594A1 EP 03013005 A EP03013005 A EP 03013005A EP 03013005 A EP03013005 A EP 03013005A EP 1486594 A1 EP1486594 A1 EP 1486594A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
thread
thread take
spinning
grooves
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
EP03013005A
Other languages
German (de)
English (en)
Other versions
EP1486594B1 (fr
Inventor
Thomas Weide
Bert Schlömer
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Saurer GmbH and Co KG
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 GmbH and Co KG filed Critical Saurer GmbH and Co KG
Priority to EP20030013005 priority Critical patent/EP1486594B1/fr
Publication of EP1486594A1 publication Critical patent/EP1486594A1/fr
Application granted granted Critical
Publication of EP1486594B1 publication Critical patent/EP1486594B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D01H4/40—Removing running yarn from the yarn forming region, e.g. using tubes

Definitions

  • the invention relates to a thread take-off nozzle for a Open-end rotor spinning device according to the preamble of Claim 1.
  • Thread take-off nozzles for open-end rotor spinning devices have been around since state of the art and in various embodiments known.
  • the problem with open-end rotor spinning devices is that the real yarn twist introduced by the rotation of the spinning rotor does not run evenly into the yarn being produced. This means that the real yarn twist is increasingly applied to the piece of yarn that is located between the thread take-off nozzle and the thread take-off device of the open-end rotor spinning device. In contrast, the real yarn twist often runs into the yarn piece in front of the thread take-off nozzle only very incompletely.
  • the material or the Surface structures are numerous in many thread take-off nozzles different embodiments are known.
  • DE-OS 25 44 721, DE 33 44 741 A1 or the EP 0 422 615 B1 describe thread draw-off nozzles which have notch-like depressions in the region of the thread inlet zone.
  • the thread take-off nozzle is made of an oxide ceramic material and has a roughness depth of 0.2 to 0.7 ⁇ m in the area of the thread inlet funnel. Notches, which can have different notch opening angles, are also arranged in the region of the thread inlet zone.
  • the thread take-off nozzles described in DE 33 44 741 A1 have an exchangeable thread inlet funnel drawn from sheet steel and subsequently hardened.
  • the thread feed hopper has either notches or protruding beads. The notches can also be positioned in two ring-like arrangements, which lie one behind the other in the direction of the thread.
  • EP 0 422 615 B1 relates to a thread draw-off nozzle which has notches in the area of the thread entry zone and protrusions in the area of its thread take-off channel.
  • the notches are said to improve the spinning stability of the open-end spinning device, while the projections in the thread take-off channel are used to produce a particularly hairy yarn.
  • a thread draw-off nozzle is known from CH-PS 535 294, which has both ring-shaped notches in the region of the mouth funnel and notches which are arranged orthogonally to these ring-shaped notches. This means that with this thread take-off nozzle, differently arranged notches overlap and form a multitude of relatively aggressive abutments for the rotating thread.
  • This known thread draw-off nozzle has not proven itself in practice and has not been able to establish itself on the market.
  • DE 37 07 526 A1, DE 42 24 632 A1 or EP 0 220 546 A1 relates, for example, to thread take-off nozzles designed in this way.
  • the spiral structure can, for example, as in the DE 37 07 526 A1 or EP 0 220 546 A1 web-like or bulge-like elevations are formed preferably over the entire thread inlet zone of the Thread take-off nozzle up to the start of the thread take-off channel Extend the thread take-off nozzle.
  • DE 42 24 632 A1 also describes a thread draw-off nozzle with a spiral structure.
  • the thread draw-off nozzle has spirally running surfaces which are straight with respect to the thread running direction and which are arranged inclined at an angle in order to achieve thread deflection points.
  • Such a spiral / notch nozzle is for example in the DE 197 38 382 A1 described.
  • a spiral structure for holding back the real yarn twist is arranged in the mouth area and notches are additionally positioned in the input area of the thread take-off channel.
  • the thread draw-off nozzles according to DE 197 38 382 A1 have proven themselves very well in practice, which means that they can be used to produce yarns of outstanding quality, in particular when spinning cotton but also of polyester / cotton blends.
  • spiral / notch nozzles which are proven per se, are very expensive to produce. This means that a relatively complex and overall very expensive tool is necessary to manufacture the spiral structure in the mouth area of the thread take-off nozzles.
  • a disadvantage of these thread take-off nozzles is also that spiral structure towards the edge of the thread take-off nozzle leaks, which leads to that during spinning constantly the distance between the thread formation zone in the groove of the Spinning rotor and the spiral structure to restrain the real yarn twist changes.
  • the present invention is based on the aforementioned prior art hence the task of further improving To create thread take-off nozzle.
  • the thread draw-off nozzles according to the invention have the advantage, among other things, that on the one hand the complexity of the tools required for their production is significantly smaller than that of thread draw-off nozzles with a spiral structure and that on the other hand production with a significantly lower reject rate is possible. This means that the thread take-off nozzles according to the invention can be manufactured significantly more cost-effectively than the spiral / notch nozzles known and proven per se.
  • the arrangement according to the invention of circular beads or grooves of different diameters in the area of the mouth funnel of the thread take-off nozzle also ensures that there is always a constant distance between the thread formation zone in the spinning rotor and the structure for restraining the real yarn twist, which has an advantageous effect on the yarn quality.
  • the circular beads or grooves are preferably how set out in claim 2, arranged concentrically.
  • the beads or grooves the surface pressure on the thread increases and is therefore effective prevents too much real yarn twist from the critical area can leave in front of the thread take-off nozzle.
  • the surface of such a thread take-off nozzle is advantageously polished at least in the region of the mouth funnel of the nozzle.
  • the thread take-off nozzles as in Claim 8 set forth, manufactured by injection or pressing.
  • These known and proven manufacturing processes enable especially with larger quantities, one cost-effective production, the individual components in highest precision can be manufactured.
  • the open-end rotor spinning device shown schematically in FIG. 1 bears the overall reference number 1.
  • Such spinning devices each have a rotor housing 2 in which the spinning cup of a spinning rotor 3 rotates at high speed.
  • the spinning rotor 3 is supported with its rotor shaft 4 in the bearing gussets of a so-called support disk bearing 5 and is driven by a machine-long tangential belt 6, which is acted upon by a pressure roller 7.
  • the rotor shaft 4 is axially fixed, for example, by means of a permanent magnetic axial bearing 18.
  • the rotor housing 2 which is open towards the front, is closed during the Spinning operation by a pivotably mounted cover element 8 closable.
  • Rotor housing 2 is also a corresponding one Suction line 10 connected to a vacuum source 11, the the spinning vacuum required in the rotor housing 2 is generated.
  • a fader tape release device is integrated in the cover element 8, which is rotatably supported to a limited extent about a pivot axis 16. That is to say, the cover element 8 has an opening roller housing 17 and rear-side bearing brackets 19, 20 for mounting an opening roller 21 or a sliver feed cylinder 22.
  • the opening roller 21 is driven via a rotating, machine-long tangential belt 24, which acts on a whorl 23 of the opening roller 21, while the drive of the sliver feed cylinder 22 is preferably carried out via a machine-long drive shaft 25 or a worm gear (not shown).
  • the individual fibers 28 released by the opening roller 21 from a feed fiber band (not shown) are fed into the spinning rotor 3 via the fiber guide channel 14 and, as is customary in open-end rotor spinning devices, are first collected in the region of the rotor groove 27 of the spinning rotor 3.
  • the individual fibers 28 are then spun into a thread 29 which is drawn off via the thread take-off nozzle 13.
  • the thread take-off speed with which the new thread 29 can be drawn in the direction A from the open-end spinning device 1 is dependent on various factors, such as the rotor speed, the desired yarn rotation, etc., and can be set via a thread take-off device 35.
  • the thread take-off nozzle 13 is, preferably non-detachably, fixed in a nozzle holder 36, which is connected to the channel plate adapter 12, for example, via an external thread 37 or a (not shown) magnetic connection.
  • the thread draw-off nozzle 13 has a coaxially arranged structure 30 in the region of its mouth funnel 38.
  • This coaxially arranged structure 30 is formed either by circular beads or by comparable annular grooves 32 of different diameters. It is up to the observer to consider whether these are beads or grooves.
  • Figure 2 shows a thread take-off nozzle 13, the coaxial arranged structure 30 by means of circular beads or grooves 32 different diameter is formed, which is in the range of Mouth funnel 38 are arranged axially spaced.
  • the exemplary embodiment according to FIG. 3 shows a coaxially arranged structure 30 which consists of a plurality of concentrically arranged beads or grooves 32 of different diameters. These concentrically arranged beads or grooves 32 preferably extend from the area of the outer edge 33 of the thread draw-off nozzle 13 to the beginning of the funnel-like inlet area of the thread draw-off nozzle 13.
  • notches 34 are additionally arranged in each case.
  • the notches 34 are in the present embodiments Four notches 34 each are shown, for example in the entrance area of the thread take-off channel 31 Thread take-off nozzle 13.
  • the thread take-off nozzles 13 according to the invention are preferably made of a high-performance ceramic, for example Al 2 O 3 .
  • This material is highly stable even under point loads and largely resistant to aging (oxidation).
  • this oxidic hard material is characterized by good thermal conductivity.
  • the above-described coaxially arranged structures 30 of the thread draw-off nozzle 13 and the formation of the notches are expressly not limited to the exemplary embodiments shown in the figures with regard to their exact embodiment. This means that the beads or grooves can differ from the exemplary embodiments both in terms of their number and in terms of their width or height. Likewise, depending on the yarn material to be processed, the notches can be made longer or shorter, wider or narrower, and deeper or flatter, for example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP20030013005 2003-06-10 2003-06-10 Tuyère de sortie de fil Expired - Lifetime EP1486594B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20030013005 EP1486594B1 (fr) 2003-06-10 2003-06-10 Tuyère de sortie de fil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030013005 EP1486594B1 (fr) 2003-06-10 2003-06-10 Tuyère de sortie de fil

Publications (2)

Publication Number Publication Date
EP1486594A1 true EP1486594A1 (fr) 2004-12-15
EP1486594B1 EP1486594B1 (fr) 2006-11-29

Family

ID=33185856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030013005 Expired - Lifetime EP1486594B1 (fr) 2003-06-10 2003-06-10 Tuyère de sortie de fil

Country Status (1)

Country Link
EP (1) EP1486594B1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2130722A1 (de) * 1971-06-21 1972-12-28 Skf Kugellagerfabriken Gmbh Vorrichtung zum spindellosen Verspinnen von Textilfasern
DE4224632A1 (de) * 1992-07-25 1994-01-27 Schlafhorst & Co W Vorrichtung zum Offenend-Spinnen
US5675965A (en) * 1992-08-20 1997-10-14 Burckhardt America, Inc. Navel member for open end spinning device
DE19738382A1 (de) * 1997-09-03 1999-03-04 Schlafhorst & Co W Fadenabzugsdüse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2130722A1 (de) * 1971-06-21 1972-12-28 Skf Kugellagerfabriken Gmbh Vorrichtung zum spindellosen Verspinnen von Textilfasern
DE4224632A1 (de) * 1992-07-25 1994-01-27 Schlafhorst & Co W Vorrichtung zum Offenend-Spinnen
US5675965A (en) * 1992-08-20 1997-10-14 Burckhardt America, Inc. Navel member for open end spinning device
DE19738382A1 (de) * 1997-09-03 1999-03-04 Schlafhorst & Co W Fadenabzugsdüse

Also Published As

Publication number Publication date
EP1486594B1 (fr) 2006-11-29

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