EP2812470A1 - Garnabzugseinheit einer rotorspinnmaschine sowie verfahren zur herstellung eines garns mit hilfe einer rotorspinnmaschine - Google Patents
Garnabzugseinheit einer rotorspinnmaschine sowie verfahren zur herstellung eines garns mit hilfe einer rotorspinnmaschineInfo
- Publication number
- EP2812470A1 EP2812470A1 EP13702999.7A EP13702999A EP2812470A1 EP 2812470 A1 EP2812470 A1 EP 2812470A1 EP 13702999 A EP13702999 A EP 13702999A EP 2812470 A1 EP2812470 A1 EP 2812470A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- nozzle
- draw
- garnabzugseinheit
- insert
- 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
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
- Garnabzuqsech a rotor spinning machine and method for producing a yarn using a rotor spinning machine
- the present invention relates to a Garnabzugsech a rotor spinning machine, comprising a projecting into a spinning chamber of the rotor spinning machine exhaust nozzle and a discharge channel for a yarn produced within the spinning chamber, wherein the discharge channel of the withdrawal nozzle downstream of the withdrawn from the spinning chamber yarn is downstream. Furthermore, a method for producing a yarn by means of a spinning station of a rotor spinning machine is proposed, wherein a single fiber fiber material is rotated within a spinning chamber of the spinning station by means of a spinning rotor to a yarn and the yarn withdrawn by means of a discharge nozzle via a discharge channel from the spinning chamber becomes. Finally, a take-off nozzle for a rotor spinning machine with a discharge channel is described, over which a yarn produced by means of the rotor spinning machine can be pulled off.
- rotor spinning machines are characterized in that first the individual fibers of a fed fiber sliver are separated by means of a dissolving unit and introduced into a spinning chamber. There they meet the inner wall of a spinning rotor spinning at high speed and are forced into the area of a rotor groove by the occurring centrifugal forces. The rotation of the spinning rotor finally causes a twisting of the individual fibers, which in turn wind around the end of the already produced yarn (fiber bonding process). As a result, by twisting individual fibers, a yarn or the continuous extension of an already existing yarn is continuously produced, which can finally be withdrawn from the spinning chamber via a withdrawal channel of a corresponding withdrawal unit.
- the strength of the false twist is basically limited. This is due to the fact that the false twist forming bumps must have some "sharp edge" to make the yarn rotate, and if the bumps are too sharp, there will be excessive mechanical stress on the yarn, causing the yarn to twist Effect of better fiber bonding is neutralized by subsequent damage to the yarn again.
- the object of the present invention is therefore to propose a draw-off unit or a draw-off nozzle and a method for producing a yarn, in which excessive loading of the yarn is avoided despite good fiber bonding.
- the object is solved by a device by a Garnabzugshim with the features of claim 1.
- the yarn withdrawal unit of the rotor spinning machine is characterized in that the withdrawal channel for the yarn produced in the spinning chamber comprises a helically extending section, with which Sen help the yarn within the flue a false twist can be dispensed.
- the produced yarn obtains the desired false twist in this case by means of its spiral-shaped positive guidance or the torsional moment which arises as a result and which acts on the yarn during the passage of said section.
- the finished yarn receives a rotation which in turn exerts the desired torque on the yarn end in the region of the upstream groove of the spinning rotor.
- the basic idea of the invention is therefore to guide the yarn through a helical discharge duct section.
- Such a running section usually has no (sharp) edged transitions, so that excessive mechanical stress on the yarn can be excluded. Rather, the yarn is gently directed to a helical path which provides particularly gentle guidance of the yarn while still allowing the desired false twisting.
- the yarn expediently passes through a channel which is closed on all sides and preferably has a round or lenticular cross-section, which is part of the withdrawal channel and assumes a helical course.
- the helically extending section is delimited by a surface section of an insert. While the helically extending portion of the flue can also run within a corresponding component, a surface treatment is associated with much less production effort.
- the corresponding section can in this case be milled into the surface of the insert.
- the insert preferably has a cylindrical outer contour, which is interrupted only by the course of the helical portion extending the discharge channel.
- the insert is surrounded by a wall and a wall surface facing the surface portion of the insert a helical and preferably groove-shaped depression has, which forms the helical extending portion together with the adjacent part of the wall.
- the insert need not have an internal channel.
- the inventive section of the exhaust duct by interaction of a surface portion of the insert (in the form of the boundary surfaces of the recess) and hereby corresponding mating surfaces of the applied to the insert wall of the insert-bearing member of the rotor spinning machine.
- the depressions can be introduced in a simple manner by material-removing process in an example cylindrical body, while the finished insert receiving and said wall having component with respect to the formation of the helical discharge duct section does not have to be edited.
- the insert and a component having the wall of the yarn withdrawal unit are separate components. Both units can be made in this case of different materials, in particular, the use of ceramic, metal or plastic can be made.
- the insert can be glued or screwed to the component having the wall (for example the cover of the rotor unit or of the draw-off nozzle). Also, a mutual pressing is conceivable, the use in all cases should be arranged stationary with respect to the wall having the component.
- the wall having the component is formed by a sleeve, and that the insert is disposed within the sleeve and rotatably mounted with respect to the sleeve.
- the sleeve thus represents a further component, which serves primarily the storage of the insert and thus also the limitation of the helical extending portion of the discharge channel according to the invention.
- the sleeve itself can in turn be mounted in a bore / opening of the lid of the spin chamber limiting housing.
- the insert is glued to the sleeve, with purely positive connections are conceivable (screwing, pressing, etc.).
- the sleeve connects the draw-off nozzle to a draw-off pipe, the insert being placed between the draw-off nozzle and the draw-off pipe and being surrounded by the sleeve.
- the sleeve is used in this case, the storage of the insert and the discharge nozzle and thus ensures that the discharge duct runs exactly in position from the yarn inlet of the draw-off nozzle to the exhaust pipe.
- the sleeve is also preferably rotatable and has one or more abutment surfaces against which the exhaust nozzle and / or the exhaust pipe or with the aid of which the sleeve itself comes to rest on correspondingly adjacent components of the rotor spinning machine.
- the drive of the sleeve preferably takes place with the aid of a drive belt looped around the sleeve, which in turn, for example via a drive axle, with a corresponding drive (eg an electric motor or a central drive shaft of the rotor spinning machine) Active compound can stand.
- a drive belt looped around the sleeve which in turn, for example via a drive axle, with a corresponding drive (eg an electric motor or a central drive shaft of the rotor spinning machine) Active compound can stand.
- the sleeve is mounted on a rotary bearing and is displaceable relative to the stationary fixed nozzle in a rotary motion.
- the draw-off nozzle does not undergo any rotation during yarn production, while the section of the withdrawal channel according to the invention is set in said rotation.
- a rotary bearing can be placed between the drawing-off nozzle or a component of the yarn drawing unit and the sleeve which holds the drawing-off nozzle, which in spite of the possible relative movement between the drawing nozzle and the sleeve prevents the air from entering or leaving the drawing-off channel.
- the sleeve is rotatably mounted in the region of its two end faces in order to ensure stable storage thereof.
- the sleeve is non-rotatably in communication with the trigger nozzle, so that the trigger nozzle is displaceable together with the sleeve in a rotational movement. It is therefore conceivable that a relative movement between the sleeve and the spinneret is prevented, so that the produced yarn already strikes a moving surface in the region of the spinneret.
- Sleeve and spinneret may be glued in this case, for example.
- FIG. 5 shows a partially sectioned side view of a further withdrawal unit according to the invention
- the fibers separated by the opening roller 10 are now sucked into the spinning rotor 4 during rotor spinning and forced into its inner groove 35 by the high rotational speed of the spinning rotor 4. There, they come into contact with the yarn 5 indicated in FIG. 2 and, as a result of the rotor rotation, are wound around its likewise rotating end (so-called fiber bonding process). In this way, continuous yarn 5 is produced, which can be drawn off via the draw-off nozzle 21.
- the withdrawal channel 23 comprises a helically extending section 24 for the yarn 5, with the aid of which the yarn 5 within the withdrawal channel 23 a false twist can be dispensed.
- FIG. 3 A drawing-off nozzle 21 according to the invention is shown in FIG. 3, wherein the helically extending section 24 according to the invention is formed by an insert 25 which is placed inside the draw-off channel 23 of a (generally rotating) draw-off nozzle 21, as basically also in the rotor spinning machine according to FIG Use can come.
- The, preferably groove-shaped, recess 28 is limited to the outside by the part 29 of the wall 27 adjacent to the recess 28.
- FIG. 4 shows a yarn withdrawal unit according to the invention, in which the helically extending section 24 of the withdrawal channel 23 delimited by the insert 25 is not arranged inside the withdrawal nozzle 21, but in connection therewith.
- the insert 25 is mounted in this case within a sleeve 30, which in turn connects the discharge nozzle 21 with a discharge pipe 14.
- the insert 25 in order to further minimize mechanical stress on the withdrawn yarn 5 during its rotation within the helical section 24, it may be advantageous for the insert 25, as shown in FIGS. 3 and 4, to have an inlet slope 31 and / or an opening Outlet slope 32 has. As a result, sharp edges are deflected avoided, the yarn 5 is particularly gentle in the insert 25 into and / or led out of this. While the inlet bevel 31 could also be located immediately after the yarn inlet 15 (see in particular FIG. 3), it has also proved to be very advantageous if the extraction channel 23 has a straight section 33 between the yarn inlet 15 and the helically extending section 24 , In particular, conventional extraction nozzles 21 can be used in this case, which can be supplemented according to FIG. 4 with an insert 25 according to the invention.
- the insert 25 shown consists of an inlet bevel 31 having the starting piece 37, an outlet 32 having end piece 38 and a middle piece arranged therebetween 36. Start piece 37, middle piece 36 and end piece 38 in the installed state corresponding to each other Contact surfaces 39 and positively locking interlocking anti-rotation.
- FIG. 7 shows an advantageous embodiment of the invention, in which the component having the helical section 24 can be actively driven.
- Said component may, for example, be in the form of a sleeve 30, in the interior of which an insert 25 having the section 24 according to the invention, corresponding to one of the FIGS. 4 to 6, extends.
- this in turn can, preferably via a drive belt 44 shown partially cut in FIG. 7, be connected to a drive axle 45, which in turn can be put into rotary motion by a drive (for example an electric motor, not shown).
- a drive for example an electric motor, not shown.
- the component (in Figure 7: the sleeve 30) and the drive axle 45 should this have a circular Au contour in a plane perpendicular to the plane, so that the component and the drive shaft 45 of the (under tension) drive belt 44 looped around and can be set in a rotary motion.
- the sleeve 30 in one piece with the shown front section 42 and / or the illustrated rear section 43 in order to connect the two sections 42, 43 (and if the front section 42 and the outlet nozzle 21 are also connected to the outlet nozzle 21). also to be able to turn.
- mount the sleeve 30 via corresponding rotary bearings within correspondingly fixed fixed sections (front section 42, rear section 43 or other existing support elements) so that a drive of the sleeve 30 would be possible even with the outlet nozzle 21 stationary.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012101000 | 2012-02-08 | ||
DE102012108550A DE102012108550A1 (de) | 2012-02-08 | 2012-09-13 | Garnabzugseinheit einer Rotorspinnmaschine sowie Verfahren zur Herstellung eines Garns mit Hilfe einer Rotorspinnmaschine |
PCT/EP2013/051989 WO2013117495A1 (de) | 2012-02-08 | 2013-02-01 | Garnabzugseinheit einer rotorspinnmaschine sowie verfahren zur herstellung eines garns mit hilfe einer rotorspinnmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2812470A1 true EP2812470A1 (de) | 2014-12-17 |
EP2812470B1 EP2812470B1 (de) | 2018-04-11 |
Family
ID=48794575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13702999.7A Active EP2812470B1 (de) | 2012-02-08 | 2013-02-01 | Garnabzugseinheit einer rotorspinnmaschine sowie verfahren zur herstellung eines garns mit hilfe einer rotorspinnmaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US20160010245A1 (de) |
EP (1) | EP2812470B1 (de) |
CN (1) | CN104114757B (de) |
BR (1) | BR112014018553A8 (de) |
DE (1) | DE102012108550A1 (de) |
IN (1) | IN2014DN07505A (de) |
WO (1) | WO2013117495A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014107181A1 (de) | 2014-05-21 | 2015-11-26 | Maschinenfabrik Rieter Ag | Falschdrallvorrichtung für eine Offenendspinnvorrichtung |
DE102014119380A1 (de) * | 2014-12-22 | 2016-06-23 | Rieter Ingolstadt Gmbh | Rotorspinnmaschine mit einer Vielzahl von Arbeitsstellen und einer Absaugeinrichtung |
ITUA20163006A1 (it) * | 2016-04-29 | 2017-10-29 | Savio Macch Tessili Spa | Dispositivo di filatura di tipo air-jet |
CN107338522A (zh) * | 2016-08-26 | 2017-11-10 | 桐乡守敬应用技术研究院有限公司 | 一种转杯纺纱纱线引导装置 |
DE102019103271A1 (de) * | 2019-02-11 | 2020-08-13 | Maschinenfabrik Rieter Ag | Spinndüse für eine Luftspinnmaschine sowie Verfahren zum Öffnen einer solchen |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4258541A (en) * | 1978-03-28 | 1981-03-31 | Societe Alsacienne De Constructions Mecaniques De Mulhouse | Open-end rotor with thread draw-off tube |
DE3200378A1 (de) * | 1981-02-03 | 1983-07-21 | Konrad 8900 Augsburg Götzfried | Turbulenz-spinnverfahren zur garnherstellung und vorrichtung zur durchfuehrung des verfahrens |
DE3824283C1 (de) * | 1988-07-16 | 1989-10-26 | Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt, De |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191310327A (en) * | 1913-05-02 | 1914-04-30 | Ernest Richard Royston | Improvements in or connected with Spinning Wool, Cotton, and other Fibres, or Fibrous Material. |
CH259088A (de) * | 1945-04-13 | 1949-01-15 | Casablancas High Draft Co Ltd | Falschdrahtröhrchen. |
FR2202961A1 (en) * | 1972-10-13 | 1974-05-10 | Alsacienne Constr Meca | Open end spinning device having spinning cup - to which fibres are fed through an annular channel defined by a centre body mounted in a duct |
CS190771B1 (en) * | 1976-10-19 | 1979-06-29 | Josef Havel | Spinning unit of open-end rotor spinning machines |
CH672800A5 (de) * | 1986-03-19 | 1989-12-29 | Schlafhorst & Co W | |
DE3609114C2 (de) | 1986-03-19 | 1995-11-30 | Schlafhorst & Co W | Vorrichtung zum OE-Spinnen mit einem Spinnrotor |
JPH0345725A (ja) * | 1989-07-11 | 1991-02-27 | Asahi Chem Ind Co Ltd | 紡績装置の加撚用ノズル装置 |
DE4224632B4 (de) * | 1992-07-25 | 2004-05-27 | Saurer Gmbh & Co. Kg | Vorrichtung zum Offenend-Spinnen |
DE10160067A1 (de) * | 2001-12-06 | 2003-06-18 | Schlafhorst & Co W | Verfahren und Vorrichtung zum Verspinnen textiler Stapelfasern mittels eines Spinnrotors |
DE10214492A1 (de) * | 2002-03-26 | 2003-10-16 | Stahlecker Gmbh Wilhelm | Vorrichtung zum Offenend-Spinnen |
DE10228504A1 (de) * | 2002-06-20 | 2004-01-08 | Wilhelm Stahlecker Gmbh | Garnabzugsdüse für Offenend-Spinnvorrichtungen |
AT501063A2 (de) * | 2004-11-17 | 2006-06-15 | Rieter Ingolstadt Spinnerei | Fadenabzugsdüse für spinnmaschinen |
-
2012
- 2012-09-13 DE DE102012108550A patent/DE102012108550A1/de not_active Withdrawn
-
2013
- 2013-02-01 IN IN7505DEN2014 patent/IN2014DN07505A/en unknown
- 2013-02-01 US US14/377,290 patent/US20160010245A1/en not_active Abandoned
- 2013-02-01 BR BR112014018553A patent/BR112014018553A8/pt not_active IP Right Cessation
- 2013-02-01 WO PCT/EP2013/051989 patent/WO2013117495A1/de active Application Filing
- 2013-02-01 EP EP13702999.7A patent/EP2812470B1/de active Active
- 2013-02-01 CN CN201380008514.5A patent/CN104114757B/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4258541A (en) * | 1978-03-28 | 1981-03-31 | Societe Alsacienne De Constructions Mecaniques De Mulhouse | Open-end rotor with thread draw-off tube |
DE3200378A1 (de) * | 1981-02-03 | 1983-07-21 | Konrad 8900 Augsburg Götzfried | Turbulenz-spinnverfahren zur garnherstellung und vorrichtung zur durchfuehrung des verfahrens |
DE3824283C1 (de) * | 1988-07-16 | 1989-10-26 | Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt, De |
Non-Patent Citations (1)
Title |
---|
See also references of WO2013117495A1 * |
Also Published As
Publication number | Publication date |
---|---|
BR112014018553A8 (pt) | 2017-07-11 |
EP2812470B1 (de) | 2018-04-11 |
CN104114757A (zh) | 2014-10-22 |
US20160010245A1 (en) | 2016-01-14 |
BR112014018553A2 (de) | 2017-06-20 |
IN2014DN07505A (de) | 2015-04-24 |
WO2013117495A1 (de) | 2013-08-15 |
CN104114757B (zh) | 2017-02-22 |
DE102012108550A1 (de) | 2013-08-08 |
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