WO2017144031A1 - Dispositif électromagnétique permettant d'éliminer une boucle de fil lors de l'enroulement d'un fil sur une bobine à enroulement croisé sur une machine à filer à une vitesse constante de la production de fil - Google Patents

Dispositif électromagnétique permettant d'éliminer une boucle de fil lors de l'enroulement d'un fil sur une bobine à enroulement croisé sur une machine à filer à une vitesse constante de la production de fil Download PDF

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Publication number
WO2017144031A1
WO2017144031A1 PCT/CZ2017/050007 CZ2017050007W WO2017144031A1 WO 2017144031 A1 WO2017144031 A1 WO 2017144031A1 CZ 2017050007 W CZ2017050007 W CZ 2017050007W WO 2017144031 A1 WO2017144031 A1 WO 2017144031A1
Authority
WO
WIPO (PCT)
Prior art keywords
yarn
magnetic core
pole
cylindrical
eliminating
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.)
Ceased
Application number
PCT/CZ2017/050007
Other languages
English (en)
Inventor
Miroslav Stusak
Milan Moravec
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 CZ sro
Original Assignee
Rieter CZ sro
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 Rieter CZ sro filed Critical Rieter CZ sro
Priority to US16/079,569 priority Critical patent/US10793392B2/en
Priority to EP17712407.0A priority patent/EP3419923B1/fr
Priority to CN201780013256.8A priority patent/CN109071144B/zh
Publication of WO2017144031A1 publication Critical patent/WO2017144031A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/005—Means compensating the yarn tension in relation with its moving due to traversing arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/14—Pivoting armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K26/00—Machines adapted to function as torque motors, i.e. to exert a torque when stalled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • Electromagnetic device for eliminating a yarn loop when winding yarn on a cross-wound bobbin on a spinning machine at a constant speed of the yarn production
  • the invention relates to an electromagnetic device for eliminating a yarn loop during the process of winding yarn on a cross-wound bobbin on a spinning machine at a constant speed of the yarn production, which comprises a cylindrical two-pole magnet, which is connected to a compensatory arm of a yarn loop and which is mounted rotatably about its longitudinal axis between two pole pieces of a magnetic core of a coil, which are situated opposite each other, whereby on the side remote from the cylindrical two-pole magnet and the pole pieces, the magnetic core passes through the electrical coil connected to a source of electrical energy and to a control device.
  • various compensators can be used, which comprise a compensatory arm which by one of its ends acts upon the yarn, lengthening or shortening the travel path of the yarn at a workstation in the relevant section between the drawing-off mechanism of yarn and the winding device of yarn as required, while maintaining a constant tension in the yarn, which is a necessary condition for proper winding of yarn on the bobbin.
  • CZ PV 2014-384 discloses a device for eliminating a yarn loop when winding yarn on a cross-wound bobbin on a spinning machine at a constant speed of the yarn production, which comprises a movable compensatory arm with a gripping and guiding means, whose path intersects the path of the yarn between a drawing-off mechanism of yarn and a winding device of yarn, whereby the compensatory arm is fixedly mounted on an output element of a reversible two-way controlled means, which is connected to a control device for controlling the position and/or direction and/or speed and/or force application of the output element of the reversible two-way controlled means.
  • the reversible two-way controlled means comprises a cylindrical two pole magnet on which a compensatory arm is mounted and which is mounted rotatably about its longitudinal axis in a magnetic circuit with a coil, which is connected to a source of electrical energy for the excitation of the coil according to the instructions received from the control device.
  • the magnetic circuit with the coil comprises a stirrup, whereby at standstill the position of the cylindrical two pole magnet is such that the north pole of the magnet is situated opposite one pole extension of the stirrup whereas the south pole of the magnet is positioned opposite the other pole extension of the stirrup.
  • a magnetic compensator does have numerous advantages, particularly in terms of speed of reaction and a relatively large oscillation, it has a shortcoming from the point of view of limited controllability, which manifests itself in certain situations.
  • the aim of the invention is to achieve further improvement in the functional properties of the electromagnetic device for eliminating a yarn loop when winding yarn on a cross-wound bobbin on a spinning machine at a constant speed of the yarn production.
  • the goal of the invention is achieved by an electromagnetic device for eliminating a yarn loop during the process of winding yarn on a cross-wound bobbin on a spinning machine at a constant speed of the yarn production, whose principle consists in that the magnetic core in the cavity of the coil is interrupted and a two pole permanent magnet is located at the point of interruption.
  • the advantage of this solution is the fact that the working range of the compensatory arm extends to an angle greater than 90° without a danger of twisting the cylindrical two pole magnet with the compensatory arm due to the influence of the magnetic poles of the cylindrical two pole magnet and the pole pieces of the magnetic core, which are attracted to each other.
  • Fig.1 shows a functional diagram of the arrangement of the device according to the invention
  • Fig. 2 shows an exemplary 3D embodiment of the device according to the invention.
  • the invention will be described using exemplary embodiments of arrangement and functioning of an electromagnetic device for eliminating a yarn loop at a workstation of a spinning machine between a drawing-off mechanism of yarn from a spinning unit and a winding device of yarn on a cross-wound bobbin.
  • the workstation as such is well-known in the art and therefore here it will be described only symbolically without a drawing.
  • the spinning machine comprises at least one row of identical workstations arranged next to each other, each of which comprises a spinning unit in which yarn is formed. Above the spinning unit is located a drawing-off mechanism of yarn.
  • the drawing-off mechanism of yarn comprises a well-known pair of rollers, between which the yarn passes and which are mounted in the machine frame.
  • One of the drawing- off rollers is coupled to an unillustrated drive and constitutes a driven drawing- off roller, whereas the other roller is a pressure drawing-off roller, which is rotatably mounted on a spring-loaded arm, which pushes it onto the driven drawing-off roller.
  • a winding device of yarn on a cross-wound bobbin which comprises a yarn traversing device, by which the yarn being wound is traversed across the width of the bobbin.
  • the device for eliminating a yarn loop is arranged at the workstation in the yarn path between the drawing-off mechanism and the winding device, in this case it is an electromagnetic device for eliminating a yarn loop.
  • the electromagnetic device for eliminating a yarn loop comprises a cylindrical two pole magnet 1, on which is mounted a compensatory arm 5 of a yarn loop, whereby the cylindrical two pole magnet 1 is mounted rotatably about its longitudinal axis between two pole pieces 20, 2J_ of the magnetic core 2 situated opposite each other.
  • the pole pieces 20, 2J_ of the magnetic core 2 have a profile (shape) of their heel portion, which is preferably in the form of a radius, affects the range of oscillation or the working range of the compensatory arm 5.
  • the profile (shape) of the heel portion of the pole pieces 20, 2 is optimized in relation to the profile (shape) of the cylindrical two pole magnet 1, as well as in relation to an air gap between the heel portion of the pole pieces 20, 2 and the cylindrical two pole magnet 1, taking into account the magnetic flux from the cylindrical two-pole magnet 1.
  • the magnetic core 2 is made of magnetically-soft steel.
  • the magnetic core 2 is interrupted and a permanent magnet 3 is situated in the formed gap.
  • the magnetic core 2 consists of a pair of identical C-shaped bodies oriented opposite each other, whose ends on one side constitute pole pieces 20, 21 of one end of the magnetic core 2 and whose other ends are arranged in the vicinity of the permanent magnet 3 or they abut against it.
  • the magnetic flux caused by the permanent magnet 3 is in comparison with the magnetic flux of the cylindrical two pole magnet 1 comparable.
  • the permanent magnet 3 by its magnetic flux affects the characteristics of the magnetic field in the area around the pole pieces 21_, 20 so that it extends the possible working angle of turning of the cylindrical two-pole magnet 1 and thus the amplitude of the extreme positions of the compensatory arm 5 to a range (greater than 90 °) without twisting the cylindrical two-pole magnet 1 due to the influence the magnetic poles of the cylindrical two pole magnet 1 and the pole pieces 20, 2J_ of the magnetic core 2, which are attracted to each other.
  • an electrical coil 4 which is connected to a source of electrical energy for its excitation according to the instructions of the control device.
  • the magnetic core 2 is substantially the core of the electrical coil 4.
  • the cylindrical two pole magnet 1, the electrical coil 4 and the permanent magnet 3 generate a common magnetic flux 6.
  • the compensatory arm 5 and/or the cylindrical two pole magnet 1 is aligned with at least one sensor 8 of the position of the compensatory arm 5, which is connected to the control device.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

L'invention concerne un dispositif électromagnétique permettant d'éliminer une boucle de fil lors de l'enroulement de fil sur une bobine à enroulement croisé sur une machine à filer à une vitesse constante de la production de fil, lequel dispositif comprend un aimant cylindrique à deux pôles (1), qui est relié à un bras de compensation (5) d'une boucle de fil et qui est monté en rotation autour de son axe longitudinal entre deux pièces polaires (20, 21) d'un noyau magnétique (2) d'un enroulement (4), qui sont situées à l'opposé l'une de l'autre, ce par quoi, sur le côté distant vis-à-vis de l'aimant à deux pôles cylindrique (1) et des pièces polaires (20, 21), le noyau magnétique (2) traverse l'enroulement électrique (4) connecté à une source d'énergie électrique et à un dispositif de commande. Le noyau magnétique (2) est interrompu dans la cavité de l'enroulement (4), et un aimant permanent à deux pôles (3) est disposé au point de son interruption.
PCT/CZ2017/050007 2016-02-24 2017-02-23 Dispositif électromagnétique permettant d'éliminer une boucle de fil lors de l'enroulement d'un fil sur une bobine à enroulement croisé sur une machine à filer à une vitesse constante de la production de fil Ceased WO2017144031A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US16/079,569 US10793392B2 (en) 2016-02-24 2017-02-23 Electromagnetic device for eliminating a yarn loop when winding yarn on a cross-wound bobbin on a spinning machine at a constant speed of the yarn production
EP17712407.0A EP3419923B1 (fr) 2016-02-24 2017-02-23 Dispositif électromagnétique permettant d'éliminer une boucle de fil lors de l'enroulement d'un fil sur une bobine à enroulement croisé sur une machine à filer à une vitesse constante de la production de fil
CN201780013256.8A CN109071144B (zh) 2016-02-24 2017-02-23 用于当以纱线生产的恒定速度在纺纱机上的交叉卷绕筒管上卷绕纱线时消除纱线环的电磁装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZPV2016-102 2016-02-24
CZ201600102 2016-02-24

Publications (1)

Publication Number Publication Date
WO2017144031A1 true WO2017144031A1 (fr) 2017-08-31

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Application Number Title Priority Date Filing Date
PCT/CZ2017/050007 Ceased WO2017144031A1 (fr) 2016-02-24 2017-02-23 Dispositif électromagnétique permettant d'éliminer une boucle de fil lors de l'enroulement d'un fil sur une bobine à enroulement croisé sur une machine à filer à une vitesse constante de la production de fil

Country Status (1)

Country Link
WO (1) WO2017144031A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10968071B2 (en) 2017-12-13 2021-04-06 Maschienfabrik Rieter Ag Method of controlling a compensator of the difference between the drawing-off and winding speeds of yarn when winding yarn on a bobbin at a workstation of a spinning machine and a device for performing the method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07123681A (ja) * 1993-10-29 1995-05-12 Toyota Motor Corp 揺動モータ
JPH09100739A (ja) * 1995-10-06 1997-04-15 Mikuni Corp アクチュエータ
EP0854561A2 (fr) * 1995-08-30 1998-07-22 Mikuni Corporation Actionneur thermosensible et dispositif de commande de la vitesse de ralenti comprenant un tel actionneur
JPH118963A (ja) * 1997-04-28 1999-01-12 Koninkl Philips Electron Nv 安定化静磁気トルクによる電気アクチュエーター、及びそのアクチュエーターを設けられた絞り弁装置
DE102004029925A1 (de) * 2003-06-27 2005-01-27 Aisan Kogyo Kabushiki Kaisha, Obu Drehmomentmotoren
CZ2014344A3 (cs) 2014-05-20 2014-12-17 Rieter Cz S.R.O. Způsob a zařízení k vytváření zálohy příze při výměně navinuté cívky za prázdnou dutinku na pracovním místě dopřádacího stroje
EP2955142A1 (fr) * 2014-06-09 2015-12-16 Rieter CZ s.r.o. Procédé pour éliminer une boucle de fil lors de l'enroulement de fil sur une bobine croisée sur un métier à filer à une vitesse constante du fil ainsi produit et dispositif pour son exécution

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07123681A (ja) * 1993-10-29 1995-05-12 Toyota Motor Corp 揺動モータ
EP0854561A2 (fr) * 1995-08-30 1998-07-22 Mikuni Corporation Actionneur thermosensible et dispositif de commande de la vitesse de ralenti comprenant un tel actionneur
JPH09100739A (ja) * 1995-10-06 1997-04-15 Mikuni Corp アクチュエータ
JPH118963A (ja) * 1997-04-28 1999-01-12 Koninkl Philips Electron Nv 安定化静磁気トルクによる電気アクチュエーター、及びそのアクチュエーターを設けられた絞り弁装置
DE102004029925A1 (de) * 2003-06-27 2005-01-27 Aisan Kogyo Kabushiki Kaisha, Obu Drehmomentmotoren
CZ2014344A3 (cs) 2014-05-20 2014-12-17 Rieter Cz S.R.O. Způsob a zařízení k vytváření zálohy příze při výměně navinuté cívky za prázdnou dutinku na pracovním místě dopřádacího stroje
EP2955142A1 (fr) * 2014-06-09 2015-12-16 Rieter CZ s.r.o. Procédé pour éliminer une boucle de fil lors de l'enroulement de fil sur une bobine croisée sur un métier à filer à une vitesse constante du fil ainsi produit et dispositif pour son exécution

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10968071B2 (en) 2017-12-13 2021-04-06 Maschienfabrik Rieter Ag Method of controlling a compensator of the difference between the drawing-off and winding speeds of yarn when winding yarn on a bobbin at a workstation of a spinning machine and a device for performing the method

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