US20160010245A1 - Yarn Draw-Off Unit of a Rotor Spinning Machine and Method for Producing a Yarn with the Aid of a Rotor Spinning Machine - Google Patents

Yarn Draw-Off Unit of a Rotor Spinning Machine and Method for Producing a Yarn with the Aid of a Rotor Spinning Machine Download PDF

Info

Publication number
US20160010245A1
US20160010245A1 US14/377,290 US201314377290A US2016010245A1 US 20160010245 A1 US20160010245 A1 US 20160010245A1 US 201314377290 A US201314377290 A US 201314377290A US 2016010245 A1 US2016010245 A1 US 2016010245A1
Authority
US
United States
Prior art keywords
draw
yarn
conduit
nozzle
spinning
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.)
Abandoned
Application number
US14/377,290
Other languages
English (en)
Inventor
Gerd Stahlecker
Michael Basting
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 US20160010245A1 publication Critical patent/US20160010245A1/en
Abandoned legal-status Critical Current

Links

Images

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 refers to a yarn draw-off unit of a rotor spinning machine that has a draw-off nozzle which projects into a spinning chamber of the rotor spinning machine, and a draw-off conduit for a yarn produced within the spinning chamber arranged downstream of the draw-off nozzle. Furthermore, a method for producing yarn with the help of a spinning position of a rotor spinning machine is suggested in which fiber material consisting of individual fibers is twisted inside a spinning chamber of the spinning position by means of a spinning rotor to become yarn and with the help of a draw-off nozzle, this yarn is drawn out of the spinning chamber through a draw-off conduit. Finally, a draw-off nozzle for a rotor spinning machine with a draw-off conduit is described, through which yarn produced by means of the rotor spinning machine can be drawn off.
  • rotor spinning machines are characterized by the fact that the individual fibers of a supplied sliver are introduced individually to a spinning chamber with the help of an opening unit. Inside the spinning chamber, they strike the inner wall of a fast-rotating spinning rotor and the generated centrifugal forces force them to move towards the rotor groove area. The rotation of the spinning rotor finally causes the individual fibers to twist and they, in turn, wind around the end of the already produced yarn (fiber weaving process). In the final analysis, the twisting of individual fibers produces a continuous yarn or the constant lengthening of an already existing yarn that can finally be drawn off the spinning chamber via a draw-off conduit of a corresponding opening unit.
  • the strength of the false twist is basically limited because the elevations for generating the false twist must have a certain “sharp-edged quality” so the yarn can be twisted. If the elevations are too sharp edged, the yarn is subject to excessive mechanical stress and the positive effect of the better fiber integration is neutralized once again by subsequent yarn damage.
  • the task of this invention is therefore to suggest a draw-off unit/nozzle and a method for producing a yarn in which excessive yarn stress is prevented in spite of good fiber bonding.
  • the task is solved equipment-wise by a yarn draw-off unit having the characteristics of patent claim 1 .
  • the yarn draw-off unit of the rotor spinning machine is characterized by the fact that the draw-off conduit for the yarn produced in the spinning chamber comprises a helical section with whose help the yarn inside the draw-off conduit can be provided with a false twist.
  • the produced yarn gets the desired false twist by its helically restricted guidance or the torsion moment created as a result of this acting on the yarn while it passes through the above-mentioned section.
  • the finished yarn gets a twist, which in turn exerts the desired torque on the end of the yarn in the spinning rotor groove area placed downstream.
  • the basic idea behind the invention is therefore to guide the yarn through a helical draw-off conduit.
  • such a section has no transitional (sharp) edges so that an excessive mechanical stress of the yarn can be ruled out too. Rather, the yarn is carefully guided on a helical track that allows the yarn to be guided especially gently while allowing a false twist. In other words, the yarn passes appropriately through a conduit closed on ail sides with a preferably round or oval cross-section that is part of the draw-off conduit and takes a helical course.
  • the helical section is limited by the surface section of an insert. Whereas the helical section of the draw-off conduit can also pass inside the corresponding structural part, surface treatment is associated with considerable lower production costs.
  • the corresponding section can in this case be milled into the surface of the insert, which has preferably a cylindrical external contour that is interrupted merely by the course of the draw-off conduit's helical section.
  • a wall surrounds the insert and the insert's surface section facing the wall has a helical and preferably groove-shaped depression that forms the helical section together with the neighboring part of the wall.
  • the insert is not required to have an internal conduit.
  • the section of the draw-off conduit according to the invention is created by the combined action of a surface section of the insert (in form of limiting surfaces of the depression) and the hereby corresponding opposite surfaces of the wall adjacent to the insert of a structural part of the rotor spinning machine that carries the insert.
  • the depressions can be easily built in using material-removing methods in a basic cylindrical body, for example, while the structural part containing the finished insert and the wall mentioned above does not have to be processed at all with regard to the creation of the helical draw-off conduit.
  • the insert and a structural part of the yarn draw-off unit in the wall can be made from separate materials. Both units can in this case be made from different materials; the insert especially of ceramic, metal or plastic.
  • the insert can be glued or screwed onto the structural part having the wall (e.g. the lid of the rotor unit or the draw-off nozzle). Even a pressing against one another is conceivable, in which case the insert should by all means be arranged in a stationary way with respect to the walled structure.
  • the walled structural part is tubular and the insert inside the tube is arranged in a stationary way with respect to the tube.
  • the tube represents another structural part that serves above all for the insert's placement and therefore also for limiting the helical section of the draw-off conduit according to the invention.
  • the tube itself can, in turn, be arranged in the lid's bore hole/opening of the housing that limits the spinning chamber.
  • the tube connects the draw-off nozzle with a draw-off pipe, in which case the insert is placed between draw-off nozzle and draw-off pipe and surrounded by the tube.
  • the tube serves for arranging the insert and the draw-off nozzle and thus ensures that the draw-off conduit runs perfectly positioned from the yarn intake of the draw-off nozzle to the draw-off pipe.
  • the tube is preferably rotationally circular and has one or several stop surfaces on which the draw-off nozzle and/or draw-off pipe fits tightly or with whose help the tube itself comes to rest on the correspondingly neighboring structural part of the rotor spinning machine.
  • the tube is in operational contact with a driving element and can be made to rotate with the help of this driving element.
  • the helical section of the draw-off conduit according to the invention can in this case be driven, whereby the rotational direction either matches the rotational direction of the spinning rotor or can be oriented in opposite direction to it.
  • the yarn structure can be improved and the rotation has an especially positive effect on the optical uniformity of the yarn.
  • the tube's possible speed should lie preferably within a range of 10,000 rpm to 100,000 rpm.
  • a range between 20,000 rpm and 60,000 rpm is preferably a range between 20,000 rpm and 60,000 rpm, but the best results could be achieved with a speed of 30,000 to 50,000 rpm.
  • the propulsion of the tube takes place preferably with the help of a driving belt slung around the tube that, in turn, can be in operational contact with a corresponding drive (e.g. an electrical motor or a central motor shaft of the rotor spinning machine).
  • the tube is mounted above a pivot bearing and made to rotate relative to the draw-off tube fixed in place.
  • the draw-off nozzle does not rotate while yarn is being produced, while the section of the draw-off conduit according to the invention is made to rotate in the way mentioned above.
  • a pivot bearing can be placed between draw-off nozzle or a structural part of the yarn draw-off unit holding the draw-off nozzle and the tube that—in spite of possible relative movement between draw-off nozzle and tube—prevents air from escaping from or entering into the draw-off conduit.
  • the tube is rotationally mounted in the area of its two front sides to ensure stable mounting.
  • tube and spinning nozzle can be glued together, for example.
  • the insert on its side facing the draw-off nozzle, has an inlet bevel that ends in the guiding conduit and/or has, on its side facing away from the draw-off nozzle, an outlet bevel to extend the guiding conduit.
  • inlet bevel and/or outlet bevel end flush in the adjacent area of the draw-off conduit. Stepped or sharp-edged transitions are fully prevented in this embodiment, so that the yarn can be guided especially gently.
  • the bevels mentioned above are preferably formed by the insert's corresponding sections, which can be placed on the respective front sides of it.
  • the insert is placed at least partially inside the draw-off nozzle.
  • the insert can be an integral part of the draw-off nozzle, which in this case can be exchanged together with the insert.
  • a draw-off nozzle is obtained that already has the draw-off conduit section according to the invention, so that this draw-off nozzle can also be used in already existing rotor spinning machines without the need of further constructive interventions.
  • the draw-off nozzle can have a (centric) bore hole and is therefore easily manufactured. This bore hole is finally followed by the insert, which in turn makes available a part of the limiting surfaces of the draw-off conduit's helical section.
  • the insert is made of ceramic, metal or plastic.
  • the insert can also be cast or made by (surface) treating a base body.
  • various insert coatings or especially its surface areas making contact with yarn so the friction between insert and yarn can be correspondingly adjusted.
  • the helical guidance device has a number of turns between 0.2 and 5, preferably between 1 and 3. While a high number causes the yarn to twist very strongly, a low number causes only a low torsion moment on the yarn, so that the outer fibers of the yarn are exposed to only slight mechanical stress. Even if the guidance device can only have one-half of a turn, for example, it is nonetheless a helical contact surface for the yarn, i.e. the contact surface has a bent section and also extends in longitudinal direction of the remaining draw-off conduit, thus finally creating a helical course.
  • the helical section describes a circular arch that, with respect to a longitudinal axis of the draw-off conduit, has a middle point angle ⁇ that is at least 60°, preferably at least 120° and especially preferably at least 180°.
  • the section according to the invention can therefore, as pointed out above, have less than a full turn and yet the bent shape nonetheless ensures that a corresponding false twist can be imparted.
  • the insert is made up of several, preferably equal individual elements, in which case the individual elements are joined with one another in a force- or form-fitting way.
  • a “basic helix” is used that is designed in such a way that it can be joined with other additional basic helices in a force- or form-fitting way.
  • this creates the possibility of varying the length of the insert or number of turns of the draw-off conduit by the number of individual elements joined to one another.
  • the individual elements can have, for example, one or several depressions on one of their front sides and one or several extensions on the opposite front side.
  • the extension(s) of the one individual element grip(s) the depression(s) of the adjacent individual element.
  • the extension(s) or depression(s) have preferably, in at least one area, a non-circular cross section so that the individual elements joined together cannot be twisted against one another. This means that a smooth draw-off conduit can be formed from the individual elements joined together that extends along the entire individual element.
  • the insert it is possible for the insert to be made of one or several identical middle pieces, in which case the starting piece has an inlet bevel and the terminal piece an outlet bevel. The number of middle pieces determines finally the overall length of the insert (although it is possible to dispense with the middle piece).
  • the insert can be made up of several identical individual elements that in each case have one inlet bevel and one outlet bevel.
  • the contours of the inlet and outlet bevel are preferably coordinated in such a way that they create a tight fit when the individual elements are joined together and ensure the rotation prevention mentioned above.
  • the draw-off nozzle according to the invention has a draw-off conduit with a helical section used to help the yarn be imparted a false twist inside the draw-off nozzle.
  • the draw-off nozzle itself has the section according to the invention.
  • any already existing rotor spinning machine equipped with separate draw-off nozzles can be subsequently equipped with a draw-off nozzle according to the invention in order to improve yarn quality, particularly the fiber bonding process.
  • the section according to the invention can in this case be formed by an insert too, as already described above, in which case the draw-off nozzle has preferably a cylindrical bore hole in which the insert is introduced and fixed in place (by gluing it for example).
  • the method according to the invention for producing yarn with the help of a spinning position of a rotor spinning machine is characterized by the fact that the yarn is exposed to a torsion moment inside the helical section of the draw-off conduit that causes the yarn to twist around its longitudinal axis, in which case the twisting direction corresponds to the twist of the twisting direction that the yarn received from the spinning rotor.
  • the draw-off unit or spinning nozzle described so far can be especially used.
  • the generated twist of the yarn in the draw-off conduit area is generated by the yarn making contact with the wall of the helical section of the draw-off conduit.
  • a preferred embodiment of the method fore sees the yarn to be guided along a helical path around an insert. In this case, the yarn is effectively guided through a helical, groove-shaped depression running above the surface of the insert.
  • FIG. 1 a partially cut side view of a known rotor spinning machine
  • FIG. 2 a partially cut detailed view of a spinning chamber of a rotor spinning machine according to state of the art
  • FIG. 3 a partially cut side view of a draw-off nozzle according to the invention
  • FIG. 4 a partially cut side view of a draw-off unit according to the invention
  • FIG. 5 a partially cut side view of an additional draw-off unit according to the invention
  • FIG. 6 a side and top view of a middle piece of a multipart insert for a draw-off unit according to the invention.
  • FIG. 7 a partially cut view of an additional draw-off unit
  • FIG. 1 shows a partially cut side view of a known rotor spinning machine that generally comprises numerous spinning positions 1 arranged beside one another in the longitudinal direction of the machine (i.e. perpendicular to the drawing plane).
  • fiber material 2 is fed to each spinning position 1 in a known way by means of a supply device 11 and the fiber material 2 is opened to become individual fibers with the help of an opening roller 10 and fed to a spinning rotor 4 through a fiber supply conduit 16 to a fiber feeding conduit 16 indicated by broken lines in FIG. 2 (with respect to the sheet plane, coming from behind).
  • the yarn 5 produced in the spinning rotor 4 is finally drawn off the spinning position 1 via an exit 13 through a draw-off device 7 that comprises, for example, a draw-off roller pair 6 , possibly inspected for yarn mistakes by a yarn monitoring unit 12 and wound up with a spool device 8 that includes a spool 9 .
  • a draw-off device 7 that comprises, for example, a draw-off roller pair 6 , possibly inspected for yarn mistakes by a yarn monitoring unit 12 and wound up with a spool device 8 that includes a spool 9 .
  • the spinning position 1 has a spinning chamber 22 into which the spinning rotor 4 driven by a rotor shaft 20 projects and that is limited by a housing 18 and a lid 17 that can be swiveled away. Between lid 17 and housing 18 , there is generally a gasket 19 to maintain the negative pressure inside the spinning chamber 22 .
  • draw-off of the produced yarn 5 takes place through a so-called draw-off nozzle 21 (or its yarn inlet 15 ), which can be detachably anchored on the lid 17 in form of an insert, for example, and that is connected most of the time to a draw-off pipe 14 that is also mounted on the lid 17 with the help of a carrier 34 , for example.
  • the inner conduits of the draw-off nozzle 21 , of the carrier 34 and of the draw-off pipe 14 finally form a draw-off conduit 23 that ensures the necessary guidance of the yarn 5 when it is drawn off the spinning chamber 22 .
  • the fibers now individual (not shown) after passing through the opening roller 10 —are suctioned into the spinning rotor 4 and forced by the high rotational speed of the spinning rotor 4 into its inner groove 35 , where they make contact with the yarn 5 indicated in FIG. 2 and, owing to the rotor's rotation, are slung around its likewise rotating end (so-called fiber bonding process). In this way, yarn 5 that can be drawn off through the drawn-off nozzle 21 is produced continuously.
  • the invention suggests the draw-off conduit 23 to comprise a helical section 24 for the yarn 5 with whose help a false twist can be imparted on the yarn 5 inside the draw-off conduit 23 .
  • FIG. 3 shows a draw-off nozzle 21 according to the invention, whereby the helical section 24 according to the invention is formed by an insert 25 placed inside the draw-off conduit 23 of a (generally circular) draw-off nozzle 21 , as can also be used in principle in the rotor spinning machine in accordance with FIG. 2 .
  • the insert 25 which can be glued to the draw-off conduit 23 , for example—has a basically cylindrical outer structure corresponding to the inner contour of the wall 27 limiting the opening of the spinning nozzle. Furthermore, on an adjacent surface section 26 of the wall 27 mentioned above, it has a helical depression 28 that winds around the surface of the insert 25 in the manner of a helical line.
  • the preferably groove-shaped depression 28 is limited externally by the part 29 of the wall 27 adjacent to the depression 28 .
  • a draw-off conduit 23 with a helical section 24 is obtained through which the yarn 5 must pass when it comes out of the spinning chamber during the draw-off process 22 .
  • the twisting of the helical shape is aligned in one direction corresponding to the twisting direction of the yarn 5 entering the yarn inlet 15 , the twisting is strengthened in the area of the insert 25 , The corresponding false twist (which opens once again after the insert 25 ) finally propagates all the way to the groove of the spinning rotor 4 , where it causes a highly reliable fiber bonding on the end of the yarn 5 , and there is hardly any extra mechanical stress while the false twist is generated due to the rounded off limiting areas of the helical section 24 .
  • the number or slope of the windings shown should be understood as merely exemplary. Naturally, taking relevant additional magnitudes into account (type of draw-off nozzle 21 , yarn 5 to be spun, rotor speed, etc.), both parameters can be adjusted and deviate slightly or greatly from the values shown.
  • the draw-off nozzle 21 does not have to be, in principle, an individual part detachable from the lid 17 . Rather, as part of this invention, the term “draw-off nozzle” is understood to be generally that section of the spinning device that extends into the spinning rotor 4 and comprises the draw-off conduit 23 that follows the yarn inlet 15 .
  • FIG. 4 shows a yarn draw-off unit according to the invention in which the section 24 of the draw-off conduit 23 running helically and limited by the insert 25 is not arranged inside the draw-off nozzle 21 , but after it.
  • the insert 25 is mounted inside a tube 30 , which in turn connects the draw-off nozzle 21 with a draw-off pipe 14 .
  • the insert 25 has an inlet bevel 31 and/or an outlet bevel 32 to prevent sharp-edged deviations so the yarn 5 is led especially gently into and out of the insert 25 .
  • the inlet bevel 31 could be located right after the yarn inlet 15 (see especially FIG. 3 )
  • the draw-off conduit 23 has a straight section 33 between the yarn inlet 15 and the helical section 24 .
  • Conventional draw-off nozzles 21 can be especially used in this case that could be supplemented with an insert 25 according to the invention.
  • FIGS. 5 and 6 show a corresponding embodiment.
  • the insert 25 shown consists of a starting piece 37 having the inlet bevel 31 , a terminal piece 38 having the outlet bevel 32 and a middle piece 36 arranged in between.
  • the starting piece 36 , middle piece 37 and terminal piece 38 have contact surfaces 39 correspondingly abutting one another as well as form-fittingly interlocking rotation preventers.
  • rotation prevention can be achieved if the corresponding extensions 40 and the respective depressions 41 act together.
  • the middle piece 36 has an extension 40 in the area of one of its two front sides and a corresponding depression 41 in the area of the opposite front side. If the starting piece 37 shown in FIG. 5 has likewise a corresponding depression 42 in its right front side, then the middle piece 36 can be put together with the starting piece 37 in a form-fitting way through its extension 40 .
  • a corresponding connection is also possible with the terminal piece 38 if it has a corresponding extension 40 that matches the depression 41 of the middle piece 36 on its contact surface 39 facing the middle piece 36 .
  • the advantage of a multipart insert 25 is finally that the number of used middle pieces 36 can vary depending on the respective process parameters (fiber material 2 to be spun, spinning speed, etc.). If the terminal piece 38 is coupled directly with the starting piece 37 , then one gets an especially short draw-off conduit 23 , while it can be lengthened by the respective in-between arrangement of one or several middle pieces 36 .
  • FIG. 7 shows an advantageous embodiment of the invention in which the structural part that has the helical section 24 can be actively driven.
  • the structural part mentioned can be, for example, a tube 30 in whose interior a section 24 according to the invention has an insert 25 according to one of the FIGS. 4 to 6 .
  • the structural part can be, in turn, connected preferably via a driving belt 44 shown partially cut in FIG. 7 to a driving axis 45 , which, in turn, can be made to execute a twisting movement by a drive (an electric motor, for example, not shown).
  • a drive an electric motor, for example, not shown.
  • the structural part (in FIG. 7 , the tube 30 ) and the driving axis 45 should have a circular external contour in a cut running perpendicularly to the drawing plane so that the structural part and the driving axis 45 can be slung and made to twist by the driving belt 44 that is under tension.
  • the tube 30 with the front section 42 shown and/or the back section 43 shown to consist of one single part so the two sections 42 , 43 can be made to rotate (and also the draw-off nozzle 21 if the front section 42 and the draw-off nozzle 21 are correspondingly joined).
  • mount the tube 30 through corresponding pivot bearings inside the respective fixed sections (front section 42 , back section 43 and other available carrier elements) so that the tube 30 can still be driven if the draw-off nozzle 21 is not moving.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US14/377,290 2012-02-08 2013-02-01 Yarn Draw-Off Unit of a Rotor Spinning Machine and Method for Producing a Yarn with the Aid of a Rotor Spinning Machine Abandoned US20160010245A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102012101000 2012-02-08
DE102012101000.5 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
DE102012108550.1 2012-09-13
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 (1)

Publication Number Publication Date
US20160010245A1 true US20160010245A1 (en) 2016-01-14

Family

ID=48794575

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/377,290 Abandoned US20160010245A1 (en) 2012-02-08 2013-02-01 Yarn Draw-Off Unit of a Rotor Spinning Machine and Method for Producing a Yarn with the Aid of a Rotor Spinning Machine

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170342604A1 (en) * 2014-12-22 2017-11-30 Rieter Ingolstadt Gmbh Rotor Spinning Machine Comprising a Plurality of Working Positions and a Suction Device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014107181A1 (de) 2014-05-21 2015-11-26 Maschinenfabrik Rieter Ag Falschdrallvorrichtung für eine Offenendspinnvorrichtung
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

Family Cites Families (15)

* Cited by examiner, † Cited by third party
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
CS223961B2 (en) * 1978-03-28 1983-11-25 Alsacienne Constr Meca Facility for knitting the released fibres
DE3200378A1 (de) * 1981-02-03 1983-07-21 Konrad 8900 Augsburg Götzfried Turbulenz-spinnverfahren zur garnherstellung und vorrichtung zur durchfuehrung des verfahrens
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
DE3824283C1 (de) * 1988-07-16 1989-10-26 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt, De
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170342604A1 (en) * 2014-12-22 2017-11-30 Rieter Ingolstadt Gmbh Rotor Spinning Machine Comprising a Plurality of Working Positions and a Suction Device
US10519573B2 (en) * 2014-12-22 2019-12-31 Rieter Ingolstadt Gmbh Rotor spinning machine with a multiple number of work stations and a suction device

Also Published As

Publication number Publication date
BR112014018553A8 (pt) 2017-07-11
EP2812470B1 (de) 2018-04-11
CN104114757A (zh) 2014-10-22
EP2812470A1 (de) 2014-12-17
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

Similar Documents

Publication Publication Date Title
US20160010245A1 (en) Yarn Draw-Off Unit of a Rotor Spinning Machine and Method for Producing a Yarn with the Aid of a Rotor Spinning Machine
CS216816B2 (en) Facility for spinning with open end
US7908839B2 (en) Two-for-one twisting spindle having a pneumatically actuated threading device
EP2369043B1 (de) Druckluftspinnvorrichtung und Spinnmaschine
JPH0465535A (ja) 紡績装置
US20120192541A1 (en) Component For An Air Jet Spinning Device
US9238881B2 (en) Roving machine for producing a roving and method for piecing a fiber sliver
US6782685B2 (en) Apparatus for producing a core spun yarn
US20150329994A1 (en) Spinning Unit of an Air Jet Spinning Machine and its Operation
US20120285134A1 (en) Roving Machine for Producing a Roving
CZ298758B6 (cs) Dopřádací zařízení
JP2018538452A (ja) ニットウェアを製造する装置および方法
EP2677070B1 (de) Hohlführungswelleneinheit, luftspinnvorrichtung und garnwickelmaschine damit
WO2012139178A2 (en) Method and device for obtaining yarn from staple fibers in one process of combing, drafting and twisting
US8001757B2 (en) Double-twist bunching machine
JPS61113831A (ja) 紡績糸の製造方法および装置
GB1495713A (en) Method for producing coreyarn in an open-end spinning apparatus
JPH04163325A (ja) 紡績装置
US4204392A (en) Method and device for the production of a wrapped yarn
JPH0620466U (ja) 紡績装置
CS244401B2 (en) Staple fibres spinning device
CZ20023685A3 (cs) Způsob a zařízení ke spřádání textilních stříží pomocí dopřádacího rotoru
CN203411684U (zh) 一种抽气式转杯纺纱机的纺纱器
CN106414821B (zh) 用于生产粗纱的纺织机及用于启动在这种纺织机上的粗纱生产的方法
TWI798921B (zh) 花式紗線製造裝置

Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION