EP0391994B1 - Dispositif de commande de machines textiles - Google Patents

Dispositif de commande de machines textiles Download PDF

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Publication number
EP0391994B1
EP0391994B1 EP89910064A EP89910064A EP0391994B1 EP 0391994 B1 EP0391994 B1 EP 0391994B1 EP 89910064 A EP89910064 A EP 89910064A EP 89910064 A EP89910064 A EP 89910064A EP 0391994 B1 EP0391994 B1 EP 0391994B1
Authority
EP
European Patent Office
Prior art keywords
armature
magnet
control device
flux
yoke
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.)
Expired - Lifetime
Application number
EP89910064A
Other languages
German (de)
English (en)
Other versions
EP0391994A1 (fr
Inventor
Walter Kleiner
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0391994A1 publication Critical patent/EP0391994A1/fr
Application granted granted Critical
Publication of EP0391994B1 publication Critical patent/EP0391994B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • 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
    • H01F7/066—Electromagnets with movable winding
    • 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
    • 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
    • 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1669—Armatures actuated by current pulse, e.g. bistable actuators

Definitions

  • the invention relates to a control device according to the preamble of claim 1.
  • the electromagnet If the electromagnet is to attract the magnet armature for its control function without mechanical help, this magnet must have an appropriate power, it becomes large in terms of construction as well as in electrical dimensions, whereby the switching time is longer due to the large bass of the armature, which impairs the performance of the dobby.
  • the listed mechanical parts are subject to wear, are the cause of noise and vibrations and reduce the trouble-free function over a long period of operation of the dobby.
  • the invention has for its object to reduce the number of parts necessary for the control of a dobby, to increase the ease of servicing and to achieve smooth running even at high speeds.
  • This object is achieved according to the invention in that a targeted combination of high-performance permanent magnets and electromagnets and a correspondingly selected magnet armature shape for achieving the necessary work capacity for controlling mechanical switching operations with a minimum of mechanics is used, as described in claim 1.
  • the parts of the word achieved with the invention consist in particular in that with very short electrical control pulses in the magnet coil a change in position of the magnet armature is achieved, a force pulse of high intensity being generated during the change of position of the magnet armature and this force pulse being used for direct control of the dobby and the magnet armature is held in every end position without supplying electrical energy, by utilizing the permanent magnetic flux of the permanent magnets.
  • FIG. 1 One possible application of the control device in a dobby is shown in FIG. 1.
  • the stem 20 is pulled into an end position, for example a low compartment, by means of the spring 21.
  • the shaft 20 is connected by pulling cable 22 to the pivotable lever 23, which is pivotable Balance 24 carries, at the opposite ends of which a pivotable hook 25, 26 is arranged.
  • a rocker 27 pivoting synchronously with the weaving machine cycle moves the balance 24 with the hooks 25, 26 into the area of the holding hooks 55, 56 of the control device 57.
  • the holding hook 56 will be triggered by a control pulse led from the electronic pattern control by means of the control device 57 to the hook 26, whereby a positive connection to the fixed control device 57 is created.
  • the rocker 27 now pivots into the other basic position, the holding hook 56 holding the hook 25 in place, while the hook 26 is pushed against the holding hook 55 by the rocker 27.
  • the lever 23 undergoes a pivoting movement and pulls the shaft 20 into the upright position by means of the pull cable 22. If the shaft 20 has to go back into the deep compartment according to the pattern, the holding hook 55 does not change its position, the hook 26 is not held. If the shaft 20 must remain in the high compartment according to the pattern, the holding hook 5 is guided to the hook 26, as a result of which a form-fitting advertising connection to the fixed control device 57 is created.
  • FIGS. 2 to 4 The basic mode of operation of the control device can be seen from FIGS. 2 to 4.
  • a bistable magnet system consisting of the magnet yokes 1 and 2, the coil 4 and the polarized permanent magnets 3, a movable armature 5 is formed such that it is simultaneously applied to the pole shoe surfaces P1 and P22, so that the permanent magnetic flux ⁇ M the armature 5 in this Holds position. If a change in position of the armature 5 is demanded in terms of control, a current-directed control pulse is conducted into the coil 4 which generates an electromagnetic excitation flux ⁇ E in the armature 5 which is opposite to the permanent magnetic flux ⁇ M (FIG. 3).
  • the anchor in form and function as a tilt anchor 50.
  • the tilt armature 50 is supported in the coil former 56 with the pivot point 51.
  • FIG. 9 Another pivot position for the tilt armature 52 is shown in FIG. 9 where the pivot point 54 is arranged in a magnetic yoke 57.
  • the toggle anchor can be designed to simplify functional processes outside the control device, for example as a holding hook 55, FIGS. 1 and 7.
  • the tilt armature 52 is fixed in the coil former 53 and the coil former 53 pivots with the anchor 52 FIG. 9.
  • FIG. 8 shows an embodiment where the armature 45 and the coil 44 are fixed and the magnet yokes 42, 43 carry out the control movement, which can be transmitted to other elements by the toothed segment 41, for example.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Electromagnets (AREA)

Abstract

Un dispositif de commande (57) de machines textiles, notamment de ratières d'armures, comprend deux culasses d'aimant (1, 2) associées à des aimants permanents (3) et à un électro-aimant (4), ainsi qu'une armature appropriée (5, 55) retenue par le flux magnétique permanent dans l'une ou dans l'autre position terminale. Lorsqu'une impulsion de courant de commande est appliquée à l'électro-aimant, l'armature (5, 55) se déplace soudainement jusqu'à la position terminale opposée, où elle est de nouveau retenue jusqu'à ce que la prochaine impulsion de courant de commande l'amène à changer de position. Seule une impulsion de courant de très courte durée est nécessaire pour amener l'armature (5, 55) de l'aimant à changer de position. L'impulsion d'énergie ainsi obtenue est de haute intensité et permet de commander directement les éléments mécaniques d'arrêt et de commutation d'une ratière d'armures.

Claims (7)

  1. Dispositif de commande pour machine textile, et en particulier pour métier à arbre constitué d'une culasse magnétique (1) et d'une culasse magnétique (2) avec des surfaces de pièces polaires correspondantes (P₁, P₂, P₁₁, P₂₂) et des aimants permanents (3) disposés entre elles et polarisés dans une direction prédéterminée, caractérisé en ce que les aimants permanents (3) sont orientés avec les mêmes pôles magnétiques vers les surfaces de couplage (K₁, K₁₁) de la culasse magnétique (1) et (K₂, K₂₂) de la culasse magnétique (2) et qu'une ou plusieurs bobines électromagnétiques (4), pouvant subir un changement de polarité,entourent, entre les culasses magnétiques, un induit (5, 50) pouvant se déplacer entre deux positions terminales et que l'induit (5, 50) est conçu de façon qu'il soit maintenu sur les surfaces des pièces polaires (P₁ et P₂₂) par le flux magnétique permanent (ΦM) dans une position terminale jusqu'à ce qu'une impulsion de courant de commande dans la bobine (4) crée un flux d'excitation électromagnétique (ΦE) dans l'induit (5, 50), dans le sens opposé au flux magnétique permanent (ΦM) et que, de ce fait, la différence de flux (ΦM - ΦE) apparaisse sur les surfaces des pièces polaires (P₁ et P₂₂) tandis que le flux (ΦM) continue à exister sur les surfaces de pièces polaires (P₁₁ et P₂) si bien que, comme le flux (ΦM) est plus grand que (ΦM - ΦE), l'induit (5, 50) est déplacé de la position de contact stable avec (P₁ et P₂₂) jusqu'à la position de contact stable avec (P₁₁ et P₂) et possède donc un comportement de commutation stable, et que le déplacement de l'induit (5, 50) et les forces de maintien entre (P₁, P₂₂) et (P₂, P₁₁) peuvent être utilisés grâce à une disposition appropriée de l'induit (5, 50) à l'intérieur ou à l'extérieur du dispositif de commande, afin de commander des opérations mécaniques.
  2. Dispositif de commande selon la revendication 1, caractérisé en ce que l'aimant permanent (33) prend appui sur la surface de couplage (K₁) de la culasse magnétique (1) et présente un jeu (L₁) par rapport à la surface de couplage (K₂) de la culasse magnétique (2), que l'aimant permanent (34) prend appui sur la surface de couplage (K₂₂) de la culasse magnétique (2) et présente un jeu (L₂) par rapport à la surface de couplage (K₁₁) de la culasse magnétique (1), que le flux magnétique permanent crée, dans la position de l'induit (5) en contact avec les surfaces de pièces polaires (P₁, P₂₂), une force d'adhérence induit-culasse importante et que, dans la position de l'induit (5) en contact avec les surfaces de pièces polaires (P₁₁, P₂) il crée une force de maintien induit-culasse faible, que l'induit (5) reste toujours dans la position correspondant à la force de maintien importante et que, en cas de passage d'un courant dans la bobine (4), il apparaît un flux d'excitation électromagnétique opposé au flux magnétique permanent, si bien que l'induit (5) prend la position opposée jusqu'à ce que le courant de la bobine soit interrompu et que le flux d'excitation soit donc supprimé et que l'induit revienne alors dans la position avec la plus grande force d'adhérence et possède donc un comportement de commutation monostable.
  3. Dispositif de commande selon la revendication 1, dans lequel l'induit (5) est monté de manière à pouvoir se déplacer linéairement dans le corps de bobine (4) ou est guidé en dehors du corps de bobine (4).
  4. Dispositif de commande selon la revendication 1, dans lequel l'induit (50) peut pivoter autour d'un point de rotation (51).
  5. Dispositif de commande selon la revendication 1, avec butées réglables (6, 5) pour influencer le flux magnétique par la distance sélectionnable (D₁ et D₂) entre l'induit (5) et les surfaces de pièces polaires (P₁, P₂₂) et (P₂, P₁₁), afin de modifier le comportement de commutation du système magnétique.
  6. Dispositif de commande selon la revendication 1, dans lequel l'induit (52) est fixé dans le corps de bobine (53), et le corps de bobine (53) est monté avec l'induit (52) de manière à pivoter autour du point de rotation (54).
  7. Dispositif de commande selon la revendication 1, dans lequel l'induit (50) se présente sous forme d'un crochet de maintien (5().
EP89910064A 1988-10-07 1989-09-19 Dispositif de commande de machines textiles Expired - Lifetime EP0391994B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3732/88A CH679870A5 (fr) 1988-10-07 1988-10-07
CH3732/88 1988-10-07

Publications (2)

Publication Number Publication Date
EP0391994A1 EP0391994A1 (fr) 1990-10-17
EP0391994B1 true EP0391994B1 (fr) 1993-02-24

Family

ID=4262307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89910064A Expired - Lifetime EP0391994B1 (fr) 1988-10-07 1989-09-19 Dispositif de commande de machines textiles

Country Status (5)

Country Link
US (1) US5029618A (fr)
EP (1) EP0391994B1 (fr)
JP (1) JP2881654B2 (fr)
CH (1) CH679870A5 (fr)
WO (1) WO1990004056A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5018556A (en) * 1988-04-01 1991-05-28 Murata Kikai Kabushiki Kaisha Dobby loom with a magnetically operated hook selector
US5275211A (en) * 1990-09-07 1994-01-04 Karl Mayer Textilmaschinenfabrik Gmbh Electromagnetically activated jacquard control arrangement
FR2791330B1 (fr) * 1999-03-26 2001-04-20 Hki Electronic Components Ltd Dispositif pour extraire automatiquement et de maniere sequentielle des objets stockes en rangees dans des rayonnages
FR2808616B1 (fr) * 2000-05-02 2002-08-30 Schneider Electric Ind Sa Electroaimant rotatif
EP2014805B1 (fr) * 2007-07-12 2011-12-14 Groz-Beckert KG Dispositif de commande pour un embrayage principal d'une ratière
US8279027B2 (en) 2009-05-08 2012-10-02 Sensus Spectrum Llc Magnetic latching actuator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2461884C3 (de) * 1974-12-30 1982-04-15 Sds-Elektro Gmbh, 8024 Deisenhofen Elektromagnetisches Schaltgerät
DE3044829A1 (de) * 1980-11-28 1982-07-01 Harting Elektronik Gmbh, 4992 Espelkamp Polarisiertes magnetsystem
US4437078A (en) * 1981-02-03 1984-03-13 Omron Tateisi Electronics Co. Polarized electromagnetic device
FR2515703B1 (fr) * 1981-11-05 1983-12-09 Staubli Sa Ets
DE3505169C2 (de) * 1985-02-15 1995-04-06 Mannesmann Ag Betätigungsmagnet
US4631430A (en) * 1985-06-17 1986-12-23 Moog Inc. Linear force motor

Also Published As

Publication number Publication date
JP2881654B2 (ja) 1999-04-12
US5029618A (en) 1991-07-09
JPH03501755A (ja) 1991-04-18
WO1990004056A1 (fr) 1990-04-19
EP0391994A1 (fr) 1990-10-17
CH679870A5 (fr) 1992-04-30

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