EP1092794A1 - Fadenabzugsdüse fur eine Offenend-Rotorspinnmaschine - Google Patents
Fadenabzugsdüse fur eine Offenend-Rotorspinnmaschine Download PDFInfo
- Publication number
- EP1092794A1 EP1092794A1 EP00119747A EP00119747A EP1092794A1 EP 1092794 A1 EP1092794 A1 EP 1092794A1 EP 00119747 A EP00119747 A EP 00119747A EP 00119747 A EP00119747 A EP 00119747A EP 1092794 A1 EP1092794 A1 EP 1092794A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread
- nozzle
- open
- yarn
- recess
- 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
Links
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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 an open-end rotor spinning device the preamble of claim 1.
- the length of the embedding zone affects the formation of Wrapping fibers or so-called abdominal bandages.
- Wrapping fibers are individual fibers that are not or are incompletely screwed into the yarn core and then in changing direction of rotation partly loose, partly very firm, around the yarn periphery. Due to an increased false wire Umwindefiber are increasingly formed, the formation such tummy bandages also take place unevenly. Thereby suffers from the yarn structure and the area of application for OE rotor yarns is restricted.
- the yarn is plucked and thereby brought into a hairy state.
- the hairiness arises in part from the fact that outer is not quite fibers embedded in the thread partly from the thread assembly be solved and stand out.
- the notches or grooves set the thread in vibration. The thread vibrations continue into the rotor groove and influence the Spinning stability, the yarn structure and the yarn quality.
- DE 36 34 567 A1 discloses a device for removing the Yarns from the fiber collection groove of the rotor of an open-end rotor spinning device.
- the surface of the fiber take-off nozzle which rolls the yarn smoothly, points in the circumferential direction Sectors in which the coefficient of friction is lower than in the other sectors or in the remaining sector.
- the Fiber feed zone is usually due to the location of the Fiber guide channel and its mouth determined.
- the false wire is given to the yarn at the take-off nozzle.
- the wrapping fibers or so-called abdominal bandages form preferably in the binding zone, i.e. in the rotor groove or in the fiber feed zone.
- the sector with the local change in the coefficient of friction between yarn and Extraction nozzle surface is thus to the location of the fiber feed positioned that the reduction in false wire formation at Passing the yarn through the fiber feed zone in the Rotor groove takes place.
- the point of detachment of the thread from the rotor groove is the point where the thread is most stressed when it is pulled off.
- the piece of thread between the rotor groove and that through the take-off nozzle caused by the false wire with a applied higher rotation than by itself Rotor rotation results.
- the one brought in at the detachment point increased rotation improves spinning stability. Maintaining false wire formation is therefore usually desired.
- the invention is based, which To reduce the likelihood of undesired formation of a lower abdomen
- the thread take-off nozzle of the open-end rotor spinning device has one in the circumferential direction of the thread abruptly offset depression, its depth and course in Circumferential direction of the thread take-off nozzle is designed so that the Thread essentially over the entire deflection distance in Draw-off direction of the thread and over an angular range ⁇ Thread take-off nozzle of at least 10 degrees in contact with Thread take-off nozzle loses.
- This thread take-off nozzle does not work only a controllable complete interruption of the False wire formation, but even a removal of the im Legs of false wire present. Simultaneously with that Falling the false wire torque collapses the thread tension of the rotating yarn leg to almost zero.
- the Removing the false wire works in the short period surprisingly, as experiments have shown disadvantageous on the spinning stability.
- the fibers accumulated in the rotor groove go in one zone before the separation point from the untwisted in the fiber accumulation Layer over into a rotated position.
- This transition zone is called Inclusion zone designated. Passes the yarn and thus the Inclusion zone the area of the fiber feed into the rotor groove and if the staple fibers are integrated at this point, it increases the likelihood of wrapping fibers.
- the Embedding zone can be with an inventive Thread take-off nozzle to such an extent at the location of the Fiber feed into the rotor groove will shorten the formation of wrapping fibers or lower thirds can be reduced.
- the interruption of contact leads to a short - term change or reduction of the Twist in the twine leg and a displacement of the Force balance between yarn twist and Section modulus in the rotor groove without the spinning stability to adversely affect.
- the angular range in the circumferential direction of the thread take-off nozzle and hence the period in which the contact between the Thread and the surface of the thread take-off nozzle in the deflection area of the thread is broken and in which no further False wire is generated lies in the invention
- Adjusting the course of the Edge to the curvature of the twine rope curve of the twine leg enables a largely simultaneous detachment of the thread from of the surface, thus avoiding a delay in entry the complete interruption of contact.
- the constructive Execution of the recess for example with a convex Forming the shape of the side surface can affect the desired yarn structure, the yarn parameters and the textile Final articles are taken.
- a thread take-off nozzle in which the each during the Spinning process fixed angular position of the recess, based on the mouth of the fiber guide channel is changeable universal use and the position of the recess Batch change the respective changed spinning conditions to adjust.
- Thread take-off nozzles when inserting inevitably assume a predetermined position
- a change of Thread take-off nozzle with an adaptation to the respective Spinning conditions can be carried out quickly, precisely and safely.
- a thread take-off nozzle made of a ceramic material ensures the preservation of the shape, especially the edge, and thus maintaining the desired effect over you extremely long period.
- Yarns spun with thread take-off nozzles according to the invention in addition to the significantly reduced Number of winding fibers a significantly changed loose Yarn structure.
- the other characteristics of these threads are similar those of yarns spun with a smooth take-off nozzle were.
- the spinning rotor 1 shown in FIG. 1 has a shaft 2. Its axis of rotation is 3, the rotor groove is 4 and the Fiber sliding surface in the interior of the spinning rotor 1 designated 5.
- the rotor cover 6 has a fiber guide channel 7, the Mouth 8 is directed to the fiber sliding surface 5.
- the in the Rotor groove 4 fibers are collected as thread 9 through the the rotor cover 6 attached thread take-off nozzle 10 and that Thread take-off tube 11 by means of a take-off device 12 which has a pair of take-off rollers 13, 14.
- FIG. 2 shows a further explanation of the spinning process a schematic diagram of the open-end rotor spinning device in perspective view.
- the individual fibers 15 are through the fiber guide channel 7 into the interior of the spinning rotor 1 transported and occur at the mouth 8 of the fiber guide channel 7 onto the fiber sliding surface 5 of the spinning rotor 1.
- Around the way to better illustrate the fibers 15 are part of the Open-ended rotor spinning device in Figure 2 transparent shown.
- the fibers 15 lie largely stretched on the Fiber sliding surface 5 and migrate through the action of Centrifugal force into the rotor groove 4, where it is a form annular fiber accumulation 16.
- the developing Thread 9 is between the rotating spinning rotor 1, which as rotatable thread clamp acts, and the take-off roller pair 13, 14, that acts as a nip, a rotation, a so-called Real wire, granted.
- the between the take-off rollers 13, 14 pinched thread 9 is at the thread take-off nozzle 10 by about 90 ° redirected.
- the angled piece of thread, the so-called Yarn leg 17 runs through the rotation of the spinning rotor 1 in Direction of rotation 18 of the spinning rotor 1.
- the length of the Embedding zone 20 depends, for example, on what yarn twist and which rotor speed is specified and how high the False wire is.
- the thread take-off nozzle 10 has on its surface facing the spinning rotor 1 Well 24 on whose abruptly in the yarn circulation direction stepped in an angle of 90 ° to the surface Side surface 25 and a gently rising side surface 26 a Form recess 24.
- the side surface 26 rises in Direction of yarn circulation at an angle ⁇ of 20.5 degrees.
- the Thread take-off nozzle 10 has an external thread 28 through which the Thread take-off nozzle 10 rotates out in a corresponding Internal thread, not shown, of the Rotor cover 6 is introduced.
- the one labeled 29 Distance a between the edge 30 and the deepest point 31 in The bottom of the recess 24 is 1.5 mm in the exemplary embodiment.
- the through the yarn guide channel 32 of the thread take-off nozzle 10 drawn thread 9 runs with its yarn leg 17 in Direction of rotation 18 and crosses with each revolution Edge 30.
- the thread 9 in its Fig. 7 dash-dotted movement of the contour of Do not follow the surface of the thread take-off nozzle 10 and lose the Contact to the surface in an angular range ⁇ of 25 °.
- the Thread 9 is again in contact with the point of impact 34 Surface of the thread take-off nozzle 10.
- Simultaneously the thread tension of the rotating yarn leg 17 collapses to almost zero.
- There is a rotation compensation within of this thread section instead, through which the separation point 19 applied torque is significantly reduced.
- the Lower torque has the result that the binding zone 20 is shortened.
- the minimized integration zone 20 occurs in the exemplary embodiment then when the circumferential leg of yarn 17 the Fiber feed 22 happens. This will form Winding fibers significantly reduced; the yarn will ring yarn-like. In conjunction with the through the Contact interruption introduced thread tension vibrations the yarn structure becomes looser and the production of textiles Allows end products with a softer grip. With the dash-dotted yarn legs 17 'is indicated that outside the zone of the fiber feed 22 into the rotor groove 4 there is a much longer integration zone 20 '. Through the described execution of the recess 24 arises about the circumference of the spinning rotor 1 varies greatly in length Embedding zone 20, 20 ', which is 22 in the rotor groove 4 is many times shorter than that on the remaining scope. As a result, the Wound fiber formation suppressed, and on the other hand there is one sufficiently high spinning stability.
- Figures 8 to 13 show in a highly simplified representation different variants of a recess 24.
- the angular position of the Side surfaces 25 and 26 can in the illustrated alternative designs vary.
- the shape of the Side surface 26 can be convex.
- the edges 30 of the Level can be burr or burr-free, sharply broken or with be rounded to a radius.
- the bottom of the recess 24 can be rounded or edged by a transition.
- the thread 9 can be completely vented from the surface of the thread take-off nozzle 10 for a limited period of time and can be predetermined locally.
- the thread take-off nozzle 10 is designed such that the recess 24 extends into the mouth opening or the yarn guide channel 32 of the thread take-off nozzle 10.
- the false wire formation is completely interrupted each time the recess 24 is covered.
- the yarns have yarn values with those of yarns with a smooth thread take-off nozzle have been spun, are comparable, but can be very be a lot hairier.
- the open yarn structure with otherwise similar ones Yarn parameters enable new ones for rotor yarns Areas of application in which preferably voluminous and soft Yarns are processed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
- Fig. 1
- die vereinfachte Teilansicht einer Offenend-Rotorspinnvorrichtung mit einer Fadenabzugsdüse, teilweise im Schnitt,
- Fig. 2
- eine Prinzipdarstellung der Fadenbildung im OE-Spinnrotor,
- Fig. 3
- den OE-Spinnrotor und die Fadenabzugsdüse, entsprechend Ansicht A der Figur 1 teilweise im Schnitt,
- Fig. 4
- die Fadenabzugsdüse entsprechend der Ansicht B der Figur 1,
- Fig. 5
- die Fadenabzugsdüse der Figur 4 im Schnitt C-C,
- Fig. 6
- die Fadenabzugsdüse entsprechend der Ansicht D der Figur 4,
- Fig. 7
- die in Einzelheit E der Figur 6 gezeigte Vertiefung im Schnitt,
- Fig. 8 - 13
- vereinfachte Darstellungen von weiteren Varianten der Vertiefung neben der in Figur 7 gezeigten Ausbildung,
- Fig. 14
- eine schematische Darstellung einer der Krümmung des Garnschenkels angepaßten Kante der Vertiefung.
- Fasermaterial:
- 100 % CO
- Bandfeinheit:
- 3,42 ktex
- Spinnunterdruck:
- 75 mbar
- Verzug:
- 114
Claims (10)
- Offenend-Rotorspinnvorrichtung mit einer Fadenabzugsdüse (10), durch die der Faden (9) aus seiner Einbindezone (20, 20') innerhalb des Spinnrotors (1) abgezogen und während des Umlaufs auf der Fadenabzugsdüse (10) unter zusätzlicher Ausbildung von Falschdraht schlupfbehaftet rollend umgelenkt wird, wobei die Fadenabzugsdüse (10) ein Mittel aufweist, das innerhalb einer sich über einen Teil ihres Umfanges erstreckenden Zone eine Reduzierung des Falschdrahtes bewirkt und wobei das Mittel und die Mündung (8) eines Faserleitkanals (7) zur Fasereinspeisung (21) in den Spinnrotor (1) so in Rotordrehrichtung (18) zueinander angeordnet sind, daß der Faden (9) beim Passieren des Bereiches der Fasereinspeisung (22) in die Rotorrille (4) durch die Beeinflussung des Falschdrahtes mit einer reduzierten Fadendrehung beaufschlagt ist,
dadurch gekennzeichnet,
daß das Mittel durch eine in Umlaufrichtung des Fadens (9) abrupt abgesetzte Vertiefung (24) gebildet ist, deren Tiefe und Verlauf in Umfangsrichtung der Fadenabzugsdüse (10) so ausgebildet ist, daß der Faden (9) im wesentlichen über die gesamte Umlenkstrecke in Abzugsrichtung des Fadens (9) und über einen Winkelbereich α von mindestens 10° den Kontakt zur Fadenabzugsdüse (10) verliert. - Offenend-Rotorspinnvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Vertiefung (24) asymmetrisch ausgebildet ist, wobei die als erste vom Garnschenkel überstrichene Seitenfläche (25) der Vertiefung in Garnumlaufrichtung gesehen so steil abfällt, daß der Faden (9) der Kontur der Oberfläche der Fadenabzugsdüse (10) in seiner Bewegung nicht folgen kann und die in Garnumlaufrichtung folgende Seitenfläche (26) der Vertiefung (24) im Vergleich zur ersten Seitenfläche (25) deutlich flacher ansteigt.
- Offenend-Rotorspinnvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Vertiefung (24) als eine im wesentlichen radial verlaufende Stufe ausgebildet ist.
- Offenend-Rotorspinnvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Verlauf einer Kante (36), die von der eine abrupte Absetzung bildenden Seitenfläche (26) der Vertiefung (24) und der Oberfläche der Fadenabzugsdüse (10) gebildet ist, der Krümmung des umlaufenden Garnschenkels (17) angepaßt ist.
- Offenend-Rotorspinnvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Abstand a (29) zwischen der von der Seitenfläche (26) und der Oberfläche der Fadenabzugsdüse (10) gebildeten Kante (30, 36) und dem tiefsten Punkt (31) im Grund der Vertiefung (24) zwischen 1 mm und 3 mm beträgt.
- Offenend-Rotorspinnvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Fadenabzugsdüse (10) nur eine einzige Vertiefung (24) aufweist.
- Offenend-Rotorspinnvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die in Garnumlaufrichtung ansteigende Seitenfläche (26) der Vertiefung (24) konvex ausgebildet ist.
- Offenend-Rotorspinnvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die jeweils während des Spinnvorgangs fixierte Winkellage der Vertiefung (24) bezogen auf die Mündung (8) des Faserleitkanals (7) veränderbar ist.
- Offenend-Rotorspinnvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Winkel α zwischen 15° und 25° beträgt.
- Offenend-Rotorspinnvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Fadenabzugsdüse (10) aus einem keramischen Werkstoff besteht.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19949533 | 1999-10-14 | ||
DE19949533A DE19949533A1 (de) | 1999-10-14 | 1999-10-14 | Offenend-Rotorspinnvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1092794A1 true EP1092794A1 (de) | 2001-04-18 |
EP1092794B1 EP1092794B1 (de) | 2003-12-17 |
Family
ID=7925624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00119747A Expired - Lifetime EP1092794B1 (de) | 1999-10-14 | 2000-09-11 | Fadenabzugsdüse fur eine Offenend-Rotorspinnmaschine |
Country Status (3)
Country | Link |
---|---|
US (1) | US6269623B1 (de) |
EP (1) | EP1092794B1 (de) |
DE (2) | DE19949533A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6477826B2 (en) * | 2001-01-11 | 2002-11-12 | Sara Lee Corporation | Open end spun, cotton/rayon blended yarn |
DE10252487B4 (de) * | 2002-11-05 | 2012-10-11 | Wilhelm Stahlecker Gmbh | Offenend-Spinnrotor |
DE10305794B4 (de) * | 2003-02-10 | 2012-01-19 | Maschinenfabrik Rieter Ag | Garnabzugsdüse für Offenend-Rotorspinnvorrichtungen |
DE10318305A1 (de) * | 2003-04-14 | 2004-10-28 | Wilhelm Stahlecker Gmbh | Garnabzugsdüse für Offenend-Spinnvorrichtungen |
DE102015007819A1 (de) * | 2015-06-18 | 2016-12-22 | Saurer Germany Gmbh & Co. Kg | Spinnrotor für eine mit hohen Rotordrehzahlen arbeitende Offenend-Spinnvorrichtung |
DE102015119112A1 (de) | 2015-11-06 | 2017-05-11 | Maschinenfabrik Rieter Ag | Fadenabzugsdüse mit radial zur Düsenbohrung verlaufenden Kerben |
DE102015119114A1 (de) | 2015-11-06 | 2017-05-11 | Maschinenfabrik Rieter Ag | Fadenabzugsdüse |
DE102022114064A1 (de) * | 2022-06-03 | 2023-12-14 | Saurer Spinning Solutions Gmbh & Co. Kg | Fadenabzugsdüse sowie Offenend-Spinnvorrichtung mit einer Fadenabzugsdüse |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3634567A1 (de) * | 1986-04-04 | 1987-10-08 | Joachim Prof Dr Luenenschloss | Verfahren und vorrichtung zum abziehen des garns aus der fasersammelrille des rotors einer offenend-rotor-spinnvorrichtung |
EP0422615A2 (de) * | 1989-10-12 | 1991-04-17 | Rieter Ingolstadt Spinnereimaschinenbau AG | Offenend-Spinnvorrichtung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2130724C3 (de) * | 1971-06-21 | 1978-06-08 | Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt | Fadenabzugskanal an einer Offenend-Spinnvorrichtung |
CS165068B1 (de) | 1972-10-16 | 1975-11-28 | ||
DE2544721A1 (de) * | 1975-10-07 | 1977-04-14 | Feldmuehle Anlagen Prod | Vorrichtung zum verspinnen |
CS190771B1 (en) * | 1976-10-19 | 1979-06-29 | Josef Havel | Spinning unit of open-end rotor spinning machines |
DE3012314A1 (de) * | 1980-03-29 | 1981-10-15 | W. Schlafhorst & Co, 4050 Mönchengladbach | Offenend-spinnvorrichtung |
DE3445911A1 (de) * | 1984-12-15 | 1986-06-19 | Stahlecker, Fritz, 7347 Bad Überkingen | Fadenabzugsduese fuer oe-spinnvorrichtungen |
CH676608A5 (de) * | 1986-04-04 | 1991-02-15 | Luenenschloss Joachim |
-
1999
- 1999-10-14 DE DE19949533A patent/DE19949533A1/de not_active Withdrawn
-
2000
- 2000-09-11 DE DE50004778T patent/DE50004778D1/de not_active Expired - Fee Related
- 2000-09-11 EP EP00119747A patent/EP1092794B1/de not_active Expired - Lifetime
- 2000-10-16 US US09/688,897 patent/US6269623B1/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3634567A1 (de) * | 1986-04-04 | 1987-10-08 | Joachim Prof Dr Luenenschloss | Verfahren und vorrichtung zum abziehen des garns aus der fasersammelrille des rotors einer offenend-rotor-spinnvorrichtung |
EP0422615A2 (de) * | 1989-10-12 | 1991-04-17 | Rieter Ingolstadt Spinnereimaschinenbau AG | Offenend-Spinnvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE50004778D1 (de) | 2004-01-29 |
DE19949533A1 (de) | 2001-04-19 |
US6269623B1 (en) | 2001-08-07 |
EP1092794B1 (de) | 2003-12-17 |
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