EP0712947A2 - Métier à filer à bout libre - Google Patents

Métier à filer à bout libre Download PDF

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Publication number
EP0712947A2
EP0712947A2 EP95117373A EP95117373A EP0712947A2 EP 0712947 A2 EP0712947 A2 EP 0712947A2 EP 95117373 A EP95117373 A EP 95117373A EP 95117373 A EP95117373 A EP 95117373A EP 0712947 A2 EP0712947 A2 EP 0712947A2
Authority
EP
European Patent Office
Prior art keywords
open
rotor
collecting groove
spinning rotor
end 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.)
Granted
Application number
EP95117373A
Other languages
German (de)
English (en)
Other versions
EP0712947A3 (fr
EP0712947B1 (fr
Inventor
Werner Billner
Werner Bergmeier
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau 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
Family has litigation
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Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Priority to EP99124585A priority Critical patent/EP0992619B2/fr
Publication of EP0712947A2 publication Critical patent/EP0712947A2/fr
Publication of EP0712947A3 publication Critical patent/EP0712947A3/fr
Application granted granted Critical
Publication of EP0712947B1 publication Critical patent/EP0712947B1/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
    • D01H4/04—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 contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/10—Rotors

Definitions

  • the present application relates to an open-end spinning device and an open-end spinning rotor according to the preamble of claim 1 and claim 14.
  • a method for open-end spinning and an open-end spinning device are known, in which those from the fiber feed channel emerging fibers are first fed onto a wall arranged perpendicular to the rotor axis, as a result of which they are compressed in the plane of this surface, while the transport air is separated from the fibers, and then the fibers are viewed on the sliding wall of the spinning rotor, viewed in the axial direction of the spinning rotor, be fed on an area of low height. The fibers then slide down the sliding wall into the fiber collection groove of the spinning rotor. From there, they are tied into the thread that forms and pulled out of the rotor.
  • DE-A 20 16 469 From DE-A 20 16 469 an open-end spinning device is known which is very similar in structure to the two above-mentioned DE-A. Here, however, it is not so important that the fibers are first fed onto the sliding wall of the spinning rotor, but here it seems to be possible both to let the fibers get onto the sliding wall and directly into the fiber collecting groove.
  • the objective of DE-A 20 16 469 is to design the open-end spinning device in such a way that it is possible to remove fibers in a simple manner in the event of a business interruption. It is only mentioned that the thread take-off in a plane which is arranged below the fiber collecting groove should be favorable.
  • the open-end spinning rotors of the prior art namely have such a small diameter at their open end, due to the inclination and in particular the length of the fiber sliding wall, seen in the axial direction that the diameter of the part of the lid of the open-end rotor spinning device that extends into the spinning rotor is significant must have a smaller diameter than the fiber collecting groove of the spinning rotor.
  • the conditions at the fiber feed channel and at the exit slot of the fibers are very narrow because the part of the cover protruding into the rotor must be oriented to the very small diameter of the open side of the spinning rotor .
  • This has particularly unfavorable effects in the case of smaller spinning rotors, for example those with a groove diameter of 30 mm and below, when treating the fibers, when pulling the thread out of the open-end spinning rotor and when constructing the rotor lid.
  • DE-A 23 01 439 The teaching of DE-A 23 01 439 is not applicable because it related to spinning rotors with diameters in the area of the fiber collecting groove of values then common at the time of well over 45 to 50 mm in diameter in the area of the fiber collecting groove. Contrary to what is taught in DE-A 23 01 439, the prior art has developed in such a way that the mean height h has been chosen to be the same regardless of the diameter of the fiber collecting groove, values in the range from 9.5 mm to 11.5 mm were used for diameters of the fiber collecting groove between 30 mm and approx. 40 mm. In addition, in DE-A 23 01 439 no information is given at all regarding the feeding of fibers into the spinning rotor, so that no suggestions have been made for the development of spinning rotors that can be used at higher speeds from this prior art.
  • the object of the present invention is to form an open-end spinning device and an open-end spinning rotor in such a way that the disadvantages of the prior art are overcome and the design of the open-end spinning device in accordance with the invention makes it possible for the fibers in open-end spinning rotors to be inexpensive feed so that spinning rotors with a diameter of approx. 30 mm and far below can be used in the future.
  • This has the particular advantage that the economy of open-end rotor spinning can be increased significantly, because the production speed of the thread can be increased significantly by particularly small rotors.
  • Another object of the present application is to propose an open-end spinning rotor that can be used particularly advantageously at high speeds, where speeds of far more than 130,000 rpm should be possible and at the same time the spinning rotor is operated with less use of drive energy should have a lower mass and have a good center of gravity because the center of gravity is moved closer to the bearing point of the spinning rotor.
  • the invention of the present application is based inter alia on the knowledge that, contrary to the ideas of the prior art, sliding the fibers along the wall of the spinning rotor does not essentially lead to the desired effect, namely that the fibers are incorporated into the yarn in this way that this is given a satisfactory structure.
  • the so-called belly bandages that is to say fibers which are wound around the yarn instead of being part of the fiber composite, cannot be reduced or avoided.
  • the fibers By feeding the fibers onto the feed surface, they are parallelized and aligned in a sufficient, advantageous manner, so that they only need to be stretched when they pass into the fiber collecting groove due to their high peripheral speed. Their parallel alignment with each other has already been achieved by feeding them onto the feed surface. This favorable orientation is no longer resolved by the only slight or completely eliminated glide path on the wall of the spinning rotor, so that the fibers are better parallelized and oriented to one another. As a result, the fibers come into the fiber collecting groove with their beginning and end lying in one plane. This reduces the number of so-called belly bandages, since fewer thread starts are incorporated into the thread as long as their ends are not yet in the fiber collecting groove.
  • the wall of the spinning rotor which extends inside from the fiber collecting groove to the edge, has an inclination in relation to the axis of rotation of the spinning rotor of 15 ° to 21 °. This ensures that the fibers reach the fiber collecting groove safely and quickly, even if the wall is rough.
  • the wall of the spinning rotor is advantageously made rough, for example by means of a coating with hard particles, for example diamond.
  • the design of the open-end spinning device according to the invention is particularly favorable when the opening in the extension through which the thread is drawn off and where the thread take-off nozzle is also arranged is located in a plane which is arranged closer to the rotor base than the fiber collecting groove itself. As a result, the thread is withdrawn from the fiber collecting groove without coming into contact with the fibers that have not yet been deposited in the fiber collecting groove are.
  • the open-end spinning device is particularly favorable if the feed surface is at a short distance from the wall of the spinning rotor. As a result, the fibers only need to bridge a small path on which they are not guided by a surface. It is particularly favorable if this distance is made particularly small, for example between 2.8 and 1 mm.
  • the feed surface is inclined in relation to the rotor axis, as a result of which the fibers are forced to slide in a direction which leads them deeper into the interior of the spinning rotor, which makes it easier to feed the fibers directly into the fiber collecting groove.
  • the open-end spinning device according to the invention is particularly favorable if the open-end spinning rotor has a fiber collecting groove with a diameter of less than 35 mm. This makes it possible to design a particularly economical embodiment of the invention.
  • the advantages of the invention are particularly evident when the fiber collecting groove has a diameter of less than 30.5 mm, because the fibers can be placed in the fiber collecting groove in an oriented manner without the disadvantages of the prior art having to be accepted.
  • the open-end spinning device is particularly favorable if it is equipped with a spinning rotor which has a shaft for storage and / or for driving it. This makes the rotor easy to replace and to drive as well as to brake.
  • the spinning rotor is equipped on its side opposite the open end with a bearing surface, which can be designed, for example, in the form of a disk and can be made of a magnetizable material can also be driven. This enables particularly high speeds.
  • the spinning rotor can also be equipped with openings in its rotor base, as a result of which, in a known manner, the rotor rotates to create a negative pressure therein, and additional measures for generating a negative pressure can be saved.
  • the inventive design of the open-end spinning rotor ensures that the spinning rotor can be used particularly economically at high speeds.
  • the small height of the wall between the fiber collecting groove and the opening of the spinning rotor ensures that its surface is relatively small, which in particular at high speeds leads to its aerodynamic drag being greatly reduced compared to the prior art spinning rotors can be. This is further supported by its smaller diameter in the area of the fiber collecting groove.
  • the spinning rotor has an opening into which, for example, the approach with the fiber feed channel and the feed surface of an open-end spinning device extends, which is designed large enough so that the parts of the open-end spinning device can be of sufficient size so that the fibers are fed in is not hindered, neither is the pulling of the thread.
  • the inventive design of the size of the opening of the spinning rotor compared to the diameter of the fiber collecting groove ensures that with the same size of the approach of the open-end spinning device, a spinning rotor with a smaller fiber collecting groove than in the prior art can be used, which means higher rotor speeds and thus Thread delivery speeds are possible. This not only increases the economic advantage because less drive energy is consumed, but also the productivity of the spinning rotor is significantly improved.
  • the spinning rotor also has the property that the wall is formed with such a low height that the orientation of the fibers fed in is not significantly impaired by the wall of the spinning rotor. Due to its opening geometry and its low wall height, the fibers can easily be fed close to the area of the fiber collecting groove, even directly into the fiber collecting groove itself.
  • the distance between the bottom of the spinning rotor and the plane in which the fiber collecting groove is arranged is particularly favorable. This makes it possible to design the withdrawal of the thread from this spinning rotor in such a way that the withdrawn thread does not come into contact with the fibers fed in. Such a rotor is less prone to the formation of tummy tucks in the yarn.
  • a small height of the wall of less than 6.1 mm ensures that the advantages mentioned above are increased even further; a low height of the wall of less than 4.1 mm, advantageously between 2 mm and 6 mm, is particularly advantageous located and particularly cheap in a range between 2.2 mm and 4.2 mm.
  • the fiber collecting groove has a diameter of between 32 mm and 30.5 mm, the opening of the rotor having a diameter of at least 25.7 mm, because this allows a particularly economical spinning rotor to be designed, which at the same time also has such a design has a large opening that it can be easily loaded with fibers, because the approach that extends into it can be made large enough.
  • the fiber feed channel can also have an advantageous size.
  • An open-end spinning rotor according to the invention is particularly economical to use if it has a diameter of the fiber collecting groove in the region between 27.5 mm and 30.5 mm. This enables rotor speeds of far more than 130,000 rpm, which means that a particularly economical rotor is designed.
  • a rotor in particular in connection with a low height of the wall of the open-end spinning rotor, a rotor can be designed which can simultaneously produce a high quality thread and this particularly economically.
  • rotors which can work at extremely high rotor speeds and which, despite a diameter of the fiber collecting groove of less than 27.5 mm, can still be adequately supplied with fibers. This supply is still possible in a quality that feeds the fibers in parallel into the fiber collecting groove.
  • the teaching of the invention also allows such spinning rotors to be provided with an opening which is large enough that their operation is possible in a sensible manner, this being done at the same time with good thread quality and particularly high economy.
  • the open-end spinning device 1 of Figure 1 has a spinning rotor 11 which is mounted and driven with a rotor shaft 110.
  • the spinning rotor 11 runs in the interior of a housing 2 which has a cover 21 which can be folded away via a hinge 22, as a result of which the housing 2 is opened.
  • the inside of the housing 2 is pressurized via a vacuum line 23.
  • the rotor shaft 110 penetrates the housing 2, the gap being chosen to be very narrow in order to maintain the negative pressure constantly.
  • the cover 21 lies tightly on seals 211.
  • the cover 21 has a shoulder 3 which projects into the interior of the spinning rotor 11.
  • the approach 3 leads a fiber feed channel 31 into the interior of the spinning rotor.
  • Approach 3 also has one Feed surface 32, on which the fibers leaving the fiber feed channel 31 meet and are separated from their transport air. This leaves the spinning rotor via its edge 119 at its open end having an opening 111.
  • the approach 3 also has an opening 33 on which a thread draw-off nozzle 4 is placed in the interior of the spinning rotor 11. Via the opening 33 and the thread draw-off nozzle 4, a thread formed in the spinning rotor 11 is drawn off from it in a known manner.
  • the feed surface 32 of the extension 3 is formed by a slot in the extension 3, which is incorporated into the extension 3 essentially perpendicular to the axis thereof. The fiber feed channel 31 opens into this slot.
  • the spinning rotor 11 has in its interior a fiber collecting groove 112 and a wall 113 which extends between the fiber collecting groove 112 and the edge 119 of the opening 111.
  • the approach 3 is so deeply immersed in the interior of the spinning rotor 11 that the plane of the feed surface 32 lies at the same height as the plane of the fiber collecting groove 112.
  • the fibers applied from the fiber feed channel 31 to the feed surface 32 slide over the latter and pass essentially directly into the fiber collecting groove 112. Since the distance between the thread take-off nozzle 4 and the rotor base 114 is less than the distance between the rotor base 114 and the plane of the fiber collecting groove 112. the thread formed is pulled down from the fiber collecting groove 112, that is to say in the direction of the rotor base 114.
  • the drawn-off thread does not come into contact with the constantly newly fed fibers which pass from the feed surface 32 into the fiber collecting groove 112.
  • the distance, viewed in the radial direction of the axis of the spinning rotor, between the fiber collecting groove and the feed surface is shown larger.
  • the distance is actually cheaper than 3.6 mm.
  • the distance can be particularly favorable, especially in the case of small spinning rotors, from 1 mm to 2.8 mm.
  • the fibers are fed into the spinning rotor in the plane of the fiber collecting groove, so that the fibers essentially do not touch the wall 113 of the spinning rotor 11 at all.
  • the fibers are fed in a region of the wall 113 between the fiber collecting groove 112 and the edge 119, for example with a distance to the fiber collecting groove between 1 mm and 2.8 mm. From there, the fibers then arrive in the fiber collecting groove 112 without sliding largely on the wall 113.
  • the distance of the extension 3 to the wall 113 or fiber collecting groove 112 of the spinning rotor 11 can be asymmetrical, so that the distance on the side, on which the fibers enter the spinning rotor is designed to be significantly smaller than on the side facing away from it. This makes it easier for the air that has entered the rotor to escape from the latter.
  • the lid pivoted over the hinge 22, whereby the end of the feed surface 32 reaches the region of the wall 113 at the edge 119 of the spinning rotor. Due to the inventive design of the spinning rotor 11 with a wall 113, which has a height of less than 7 mm, no special measures need to be taken to bring the approach 3 out of the interior of the spinning rotor 111 when opening the lid 21 without the approach touches the edge of the rotor.
  • FIG. 2 shows an open-end spinning rotor 11 according to the invention.
  • the one of FIG. 2 in a particularly advantageous embodiment has a bearing surface 115, which consists, for example, of magnetizable material and / or is designed to be particularly wear-resistant or self-lubricating.
  • the base body 116 of the spinning rotor 11 can be made of a different material than its bearing surface 115. In order to generate negative pressure inside the spinning rotor, the latter has openings 117 in its rotor base 114.
  • the spinning rotor according to the invention from FIG. 2 has a wall 113 which has an inventive height h of less than 7 mm. Its diameter in the area of the fiber collecting groove 112 is less than 35 mm.
  • the opening 111 which has a circular cross section, has, according to the invention, a diameter equal to or more than 84 percent of the amount of the diameter of the fiber collecting groove.
  • the rotor base 115 is at a distance of more than 4.4 mm from the plane of the fiber collecting groove 112.
  • the distance A does not have this value everywhere, but at least some regions of the rotor base 114 have this distance. Conveniently, these areas of the rotor base 114, into which the thread draw-off nozzle of the extension 3 extends. This distance A makes it possible to pull the thread out of the fiber collecting groove in the direction of the rotor base 114, so that the fed-in fibers do not come into contact with the drawn-off thread.
  • the dimensions of the spinning rotor 11 are otherwise described in the claims.
  • the rotor 11 shown in FIG. 1 can have the openings 117 of the rotor 11 from FIG. 2, or the rotor 11 from FIG. 2 may have no openings 117.
  • Wall 113 may have different inclinations with respect to the rotor axis. In a special embodiment, the wall 113 can have a height of or almost 0 mm.

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)
EP95117373A 1994-11-18 1995-11-04 Métier à filer à bout libre Expired - Lifetime EP0712947B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99124585A EP0992619B2 (fr) 1994-11-18 1995-11-04 Rotor de filage à bout libre

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4441087A DE4441087A1 (de) 1994-11-18 1994-11-18 Offenend-Spinnvorrichtung
DE4441087 1994-11-18

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP99124585A Division EP0992619B2 (fr) 1994-11-18 1995-11-04 Rotor de filage à bout libre
EP99124585A Division-Into EP0992619B2 (fr) 1994-11-18 1995-11-04 Rotor de filage à bout libre

Publications (3)

Publication Number Publication Date
EP0712947A2 true EP0712947A2 (fr) 1996-05-22
EP0712947A3 EP0712947A3 (fr) 1996-08-14
EP0712947B1 EP0712947B1 (fr) 2001-09-19

Family

ID=6533566

Family Applications (2)

Application Number Title Priority Date Filing Date
EP95117373A Expired - Lifetime EP0712947B1 (fr) 1994-11-18 1995-11-04 Métier à filer à bout libre
EP99124585A Expired - Lifetime EP0992619B2 (fr) 1994-11-18 1995-11-04 Rotor de filage à bout libre

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP99124585A Expired - Lifetime EP0992619B2 (fr) 1994-11-18 1995-11-04 Rotor de filage à bout libre

Country Status (6)

Country Link
US (1) US5755087A (fr)
EP (2) EP0712947B1 (fr)
AT (2) ATE205890T1 (fr)
BR (1) BR9505210A (fr)
CZ (1) CZ287580B6 (fr)
DE (3) DE4441087A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007079794A1 (fr) * 2005-12-23 2007-07-19 Oerlikon Textile Gmbh & Co. Kg Rotor de filage a extremite ouverte pour machine textile qui fabrique des bobines croisees

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910277B4 (de) * 1999-03-09 2010-11-04 Oerlikon Textile Gmbh & Co. Kg Spinnrotor für Offenend-Spinnmaschinen
DE10314936A1 (de) * 2002-08-03 2004-02-12 Rieter Ingolstadt Spinnereimaschinenbau Ag Reinigungsvorrichtung zur Reinigung eines Spinnrotors
DE10340657A1 (de) * 2003-09-04 2005-03-31 Saurer Gmbh & Co. Kg Offenend-Spinnvorrichtung
CZ301176B6 (cs) * 2004-12-07 2009-11-25 Oerlikon Czech S. R. O. Univerzální sprádací jednotka a zpusob vedení vláken touto univerzální sprádací jednotkou
CZ2011773A3 (cs) * 2011-11-28 2013-01-09 Rieter Cz S.R.O. Zpusob prípravy konce príze pro zaprádání na rotorových doprádacích strojích a sprádací rotor
DE102015108797A1 (de) * 2015-06-03 2016-12-08 Maschinenfabrik Rieter Ag Offenendspinnrotor mit einer Rotortasse mit einer Fasersammelrille, einem Rotorboden und eine Faserrutschwand und Offenendspinnvorrichtung mit einem Offenendspinnrotor
CN107904712B (zh) * 2017-11-01 2020-08-25 西安工程大学 一种精梳短毛转杯纱的制备方法

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DE2016469A1 (de) 1969-04-09 1970-10-15 T.M.M. (Research) Ltd., Oldham, Lancashire (Grossbritannien) Open-end-Spinnvorrichtung
DE2301439A1 (de) 1972-01-14 1973-07-19 Platt International Ltd Offen-end-spinnvorrichtung
DE4123255A1 (de) 1991-07-13 1993-01-14 Fritz Stahlecker Vorrichtung zum oe-rotorspinnen
DE4224687A1 (de) 1992-07-25 1994-02-17 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Offenend-Spinnen

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DE3815182A1 (de) * 1988-05-04 1989-11-16 Wolfgang Grahamer Spinnrotor
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2016469A1 (de) 1969-04-09 1970-10-15 T.M.M. (Research) Ltd., Oldham, Lancashire (Grossbritannien) Open-end-Spinnvorrichtung
DE2301439A1 (de) 1972-01-14 1973-07-19 Platt International Ltd Offen-end-spinnvorrichtung
DE4123255A1 (de) 1991-07-13 1993-01-14 Fritz Stahlecker Vorrichtung zum oe-rotorspinnen
DE4224687A1 (de) 1992-07-25 1994-02-17 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Offenend-Spinnen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007079794A1 (fr) * 2005-12-23 2007-07-19 Oerlikon Textile Gmbh & Co. Kg Rotor de filage a extremite ouverte pour machine textile qui fabrique des bobines croisees
EP1966421B2 (fr) † 2005-12-23 2020-07-29 Saurer Spinning Solutions GmbH & Co. KG Rotor de filage a extremite ouverte pour machine textile qui fabrique des bobines croisees

Also Published As

Publication number Publication date
EP0992619A2 (fr) 2000-04-12
ATE232916T1 (de) 2003-03-15
CZ300995A3 (en) 1996-06-12
ATE205890T1 (de) 2001-10-15
EP0712947A3 (fr) 1996-08-14
EP0992619B2 (fr) 2006-08-30
CZ287580B6 (en) 2000-12-13
EP0712947B1 (fr) 2001-09-19
US5755087A (en) 1998-05-26
EP0992619B1 (fr) 2003-02-19
DE59510562D1 (de) 2003-03-27
DE59509612D1 (de) 2001-10-25
DE4441087A1 (de) 1996-05-23
EP0992619A3 (fr) 2000-04-26
BR9505210A (pt) 1997-09-16

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