EP2233617A1 - Dispositif d'entraînement individuel pour rotors de filature open-end - Google Patents

Dispositif d'entraînement individuel pour rotors de filature open-end Download PDF

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Publication number
EP2233617A1
EP2233617A1 EP10153254A EP10153254A EP2233617A1 EP 2233617 A1 EP2233617 A1 EP 2233617A1 EP 10153254 A EP10153254 A EP 10153254A EP 10153254 A EP10153254 A EP 10153254A EP 2233617 A1 EP2233617 A1 EP 2233617A1
Authority
EP
European Patent Office
Prior art keywords
discs
rotor
rotation
shank
actuation
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
EP10153254A
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German (de)
English (en)
Other versions
EP2233617B1 (fr
Inventor
Vittorio Colussi
Roberto Badiali
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.)
Savio Macchine Tessili SpA
Original Assignee
Savio Macchine Tessili SpA
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Application filed by Savio Macchine Tessili SpA filed Critical Savio Macchine Tessili SpA
Publication of EP2233617A1 publication Critical patent/EP2233617A1/fr
Application granted granted Critical
Publication of EP2233617B1 publication Critical patent/EP2233617B1/fr
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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
    • D01H4/12—Rotor bearings; Arrangements for driving or stopping
    • 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
    • D01H4/12—Rotor bearings; Arrangements for driving or stopping
    • D01H4/14—Rotor driven by an electric motor

Definitions

  • Open-end spinners generally consist of a plurality of individual spinning units, aligned on the two fronts of the machine, and served by common service units.
  • the spinning unit is essentially made up of a spinning rotor, which produces thread by twisting said singularised fibres of a rove that are supplied to it by a feeding group, and of a collection unit that takes the yarn from the rotor and takes it to wind in a bobbin, on which the thread is wound in coils by a thread guide device that distributes it with axial back and forth motion on the outer surface of the bobbin itself set in rotation.
  • the productivity of the open-end spinning machine is strictly dependent upon the rotation speed of the spinning rotor, having to produce yarn with a well defined number of twists per metre.
  • the rotation speed of the rotors has substantially increased to over 150,000 revs/min in the most recent open-end spinners.
  • every spinning unit is equipped with braking and clutch devices to operate individually on the single spinning unit, disengaging it from the common actuations during the transient phase, according to an "off-on" logic.
  • the present invention relates to a device for individually motorising the spinning rotor, i.e. "open-end", to operate at high speeds.
  • the purpose of the present invention is to make a device for individually motorising the open-end spinning rotor, which overcomes the drawbacks of the devices proposed in the state of the art and allows greater reliability, efficiency and yield of the spinner and quality of the yarn to be obtained.
  • the individual actuation device for open-end spinning units according to the invention is defined, in its essential components, in the first claim whereas its variants and preferred embodiments are specified and defined in the dependent claims.
  • the individual actuation set-up of the open-end spinning rotor is schematically illustrated in a front view in the figures marked A, in a view from above in the figures marked B and in a side view from the left in the figures marked C.
  • a set-up makes use of a support of the spinning rotor already known in the field and commonly known as "twin disc", for example according to patents US 4,916,891 and WO 2003/038166 .
  • Such a support consists of two underlying supports each consisting of a pair of coaxial discs and of an upper guide pulley that presses the shank of the rotor against the two pairs of discs.
  • the axles of the spinning rotor, of the two pairs of support discs and of the guide pulley are parallel.
  • the "twin disc” support is used by actuating it with a single motor connected to the upper guide pulley, in the case of patent US 4,916,891 , or else connected to one of the pairs of the support discs, in the case of WO 2003/038166 .
  • the "twin disc” support device of the shank 2 of the spinning rotor 1 is schematically analogous to the support that is used in conventional actuation with longitudinal drive belts, for example according to the aforementioned patent US 4,916,891 .
  • the special characteristic of the present invention concerns the replacement of one or both of the support bearings of the "twin disc” with the rotor of one or two individual actuation motors that rest their outer casing on the fixed structure of the machine.
  • the axles 5 of the rotors 10 of such one or two motors project at their ends and are in common with the "twin disc” support: the discs 6 S,D , 7 S,D are fixed on the projecting part of such axles.
  • Both of the pairs of such discs - right and left - are motorised and transmit torque setting the shank 2 in rotation, and they are no longer idle like in the conventional "twin disc” support according to patent US 4,916,891 .
  • the support bearings of the rotor 10 of the motor act as a support also for the discs 6 S,D , 7 S,D .
  • the shank 2 of the spinning rotor is dragged into rotation by friction by the outer coating of the motorised discs 6 S,D , 7 S,D , being pressed against them by the guide pulley 9.
  • the preferred type of motorisation foresees the use of electric motors, even if the first actuation quoted above ( figure 1 ) can also be actuated with different motors, for example compressed air turbines.
  • electric motors synchronous motors are particularly recommended, preferably brushless or other types of frequency-controlled motor, with suitable high synchronisation with each other in the case of two motors, as illustrated in figures 2 and 3 .
  • the two pairs of right and left discs 6 S,D , 7 S,D preferably have the same diameter and are fitted on their parallel and horizontal axles 5 S,D of the motors or stators 4 S,D , with an axle base slightly greater than their diameter in the embodiments according to the set-ups of figures 1 and 2 , and on the other hand smaller than their diameter according to the set-up of figure 3 .
  • the size of the discs 6 S,D , 7 S,D is preferably kept to between 60 and 100 mm in diameter, whereas the size of the shank 2 of the spinning rotor 1 is preferably kept to between 6 and 10 mm in diameter, with a transmission ratio between motor and spinning rotor 1 kept to between 6 and 15.
  • the guide pulley 9 is shorter than the "twin disc” support underneath and rests on the shank 2 of the rotor 1 being located in the gap between the pairs of discs 6 S,D , 7 S,D . It is mounted on a support pressed by a spring 24 that, if necessary, can be easily raised to free the shank of the rotor.
  • the individual indirect actuation device for open-end spinning units according to the invention has substantial advances with respect to individual direct actuation devices proposed by the prior art.
  • One of the most obvious of these advances is the drastic reduction in the rotation speed required both for the motors and for the bearings in the indirect actuation solutions according to the present invention. It is clear that both of the pairs of discs are thus motorised with the same speed both in steady running state and during transients.
  • the use of the "twin disc” support arranged between motors and spinning rotors allows a decisive speed reduction ratio.
  • a transmission ratio of 1 to 10 is obtained: still to give the rotor a required speed of 150,000 revs/min, the necessary rotation speed of the motors and of the relative bearings falls to 15,000 revs/min.
  • Such an order of magnitude of the steady rotation speeds in continuous use required for motors and bearings is much lower and more acceptable.
  • Electric motors that work at 250 Hz and are frequency-controlled and mechanical bearings that work at 15,000 revs/min are somewhat less demanding and more reliable than those that are required for the direct motorisation of the spinning rotor.
  • Such motors and bearings are supplied, by the relative manufacturers, and are on general sale.
  • the technical solution according to the present invention makes it possible to transmit drive torque to the shank of the spinning rotor O-E with both the pairs of support discs, to a markedly greater extent (more than double for the same geometry of the system and load of the guide pulley) than what is permitted by a single rotary actuation member, and avoiding such rotary members acting as a brake for the rotation of the spinning rotor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Centrifugal Separators (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP20100153254 2009-03-26 2010-02-11 Dispositif d'entraînement individuel pour rotors de filature open-end Active EP2233617B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI2009A000473A IT1393534B1 (it) 2009-03-26 2009-03-26 Dispositivo di azionamento individuale del rotore di filatura open-end

Publications (2)

Publication Number Publication Date
EP2233617A1 true EP2233617A1 (fr) 2010-09-29
EP2233617B1 EP2233617B1 (fr) 2013-04-03

Family

ID=41227130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100153254 Active EP2233617B1 (fr) 2009-03-26 2010-02-11 Dispositif d'entraînement individuel pour rotors de filature open-end

Country Status (3)

Country Link
EP (1) EP2233617B1 (fr)
CN (1) CN101845691B (fr)
IT (1) IT1393534B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103741278A (zh) * 2013-12-31 2014-04-23 浙江日发纺织机械股份有限公司 一种气流纺纱机微动导纱驱动装置
DE102015013484A1 (de) 2015-10-16 2017-04-20 Saurer Germany Gmbh & Co. Kg Offenend-Rotorspinnvorrichtung mit einem Spinnrotor, der mit seinem Rotorschaft im Zwickel einer Stützscheibenlagerung gelagert ist
DE102016108859A1 (de) * 2016-05-13 2017-11-16 Rieter Ingolstadt Gmbh Spinnrotor für eine Offenend-Spinnvorrichtung mit einem reibwerterhöhenden Belag und Offenend-Spinnvorrichtung

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2161076A1 (fr) * 1971-11-25 1973-07-06 Siemens Ag
DE2203586A1 (de) * 1972-01-26 1973-08-02 Schubert & Salzer Maschinen Lagerung eines ein spinnorgan direkt antreibenden elektromotors
DE3734545A1 (de) * 1987-10-13 1989-05-03 Schubert & Salzer Maschinen Offenend-rotorspinnmaschine
US6516601B2 (en) 2000-05-10 2003-02-11 W. Schlafhorst Ag & Co. Magnetic bearing arrangement for an open-end spinning device
WO2003038166A1 (fr) 2001-10-31 2003-05-08 Holding für Industriebeteiligungen AG Dispositif d'entrainement pour les rotors d'une machine de filature a rotors
US6590307B2 (en) 2001-02-01 2003-07-08 W. Schlafhorst Ag & Co. Device for controlling the radial orientation of a rapidly rotating rotor supported in a contactless manner
US6668536B2 (en) 2000-09-16 2003-12-30 W. Schlafhorst Ag & Company Open-end spinning arrangement
WO2005075719A1 (fr) 2004-02-06 2005-08-18 Saurer Gmbh & Co. Kg Arbre de rotor de filature
US20050279076A1 (en) 2004-06-16 2005-12-22 Saurer Gmbh & Co. Kg Method and apparatus for operating an open-end rotor spinning unit
DE102005023517A1 (de) 2005-05-21 2006-11-23 Saurer Gmbh & Co. Kg Offenend-Spinnvorrichtung
WO2008000335A1 (fr) 2006-06-30 2008-01-03 Oerlikon Textile Gmbh & Co. Kg Unité support pour un rotor utilisé en filature
DE102006043376A1 (de) 2006-09-16 2008-03-27 Rieter Ingolstadt Spinnereimaschinenbau Ag Pneumatischer Rotorantrieb

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10141967B4 (de) * 2001-08-21 2011-06-22 Rieter Ingolstadt GmbH, 85055 Vorrichtung zum Offenend-Rotorspinnen
DE10211817A1 (de) * 2002-03-16 2003-09-25 Schlafhorst & Co W Spinnvorrichtung
CN2692168Y (zh) * 2003-12-02 2005-04-13 浙江精工科技股份有限公司 转杯纺纱机用转杯传动装置
CN100359061C (zh) * 2004-08-10 2008-01-02 东台纺织机械有限责任公司 转杯纺纱机的纺纱器

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2161076A1 (fr) * 1971-11-25 1973-07-06 Siemens Ag
DE2203586A1 (de) * 1972-01-26 1973-08-02 Schubert & Salzer Maschinen Lagerung eines ein spinnorgan direkt antreibenden elektromotors
DE3734545A1 (de) * 1987-10-13 1989-05-03 Schubert & Salzer Maschinen Offenend-rotorspinnmaschine
US4916891A (en) 1987-10-13 1990-04-17 Hans Landwehrkamp Open-end rotor spinning machine
US6516601B2 (en) 2000-05-10 2003-02-11 W. Schlafhorst Ag & Co. Magnetic bearing arrangement for an open-end spinning device
US6668536B2 (en) 2000-09-16 2003-12-30 W. Schlafhorst Ag & Company Open-end spinning arrangement
US6590307B2 (en) 2001-02-01 2003-07-08 W. Schlafhorst Ag & Co. Device for controlling the radial orientation of a rapidly rotating rotor supported in a contactless manner
WO2003038166A1 (fr) 2001-10-31 2003-05-08 Holding für Industriebeteiligungen AG Dispositif d'entrainement pour les rotors d'une machine de filature a rotors
WO2005075719A1 (fr) 2004-02-06 2005-08-18 Saurer Gmbh & Co. Kg Arbre de rotor de filature
US20070132329A1 (en) 2004-02-06 2007-06-14 Saurer Gmbh & Co.Kg Rotor shaft of a spinning rotor
US20050279076A1 (en) 2004-06-16 2005-12-22 Saurer Gmbh & Co. Kg Method and apparatus for operating an open-end rotor spinning unit
DE102005023517A1 (de) 2005-05-21 2006-11-23 Saurer Gmbh & Co. Kg Offenend-Spinnvorrichtung
WO2008000335A1 (fr) 2006-06-30 2008-01-03 Oerlikon Textile Gmbh & Co. Kg Unité support pour un rotor utilisé en filature
DE102006043376A1 (de) 2006-09-16 2008-03-27 Rieter Ingolstadt Spinnereimaschinenbau Ag Pneumatischer Rotorantrieb

Also Published As

Publication number Publication date
EP2233617B1 (fr) 2013-04-03
CN101845691B (zh) 2014-02-26
IT1393534B1 (it) 2012-04-27
CN101845691A (zh) 2010-09-29
ITMI20090473A1 (it) 2010-09-27

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