EP1382725B1 - Rotationsschaftmaschine für Webmaschinen und Webmaschine mit einer solchen Schaftmaschine - Google Patents

Rotationsschaftmaschine für Webmaschinen und Webmaschine mit einer solchen Schaftmaschine Download PDF

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Publication number
EP1382725B1
EP1382725B1 EP03356112A EP03356112A EP1382725B1 EP 1382725 B1 EP1382725 B1 EP 1382725B1 EP 03356112 A EP03356112 A EP 03356112A EP 03356112 A EP03356112 A EP 03356112A EP 1382725 B1 EP1382725 B1 EP 1382725B1
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EP
European Patent Office
Prior art keywords
dobby
levers
coupling member
actuating element
selector
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
EP03356112A
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English (en)
French (fr)
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EP1382725A1 (de
Inventor
Jean-Pierre Pages
Patrick Iltis
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.)
Staubli Faverges SCA
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Staubli Faverges SCA
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Publication date
Application filed by Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP1382725A1 publication Critical patent/EP1382725A1/de
Application granted granted Critical
Publication of EP1382725B1 publication Critical patent/EP1382725B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams

Definitions

  • the invention relates to a rotary dobby for the control of heald frames mounted on a loom and a loom equipped with such a dobby.
  • the vertical reciprocating movement of the heald frames is provided by oscillating lever-link assemblies, these oscillating assemblies being controlled by eccentric-shaped actuating elements.
  • These actuating elements are mounted on a main shaft of the dobby which is animated by an intermittent rotation movement and, at each stop of this shaft, a reading device controls the securing of the actuating element with the Shaft for controlling an oscillating piece according to the pattern or weave to be obtained on the weaving fabric.
  • FR-A-2 540 524 discloses a rotary dobby in which this selective joining is obtained by means of a plate secured to an eccentric forming an actuating element and comprising two diametrically opposed notches adapted to cooperate with the nose of two levers swivels controlled by a reading device. It is also known from FR-A-2 757 884 to use a pivoting selector for selectively actuating one or the other of two pivoting levers of the type mentioned above. This selector is controlled by an electromagnet and subjected to the action of return means. FR-A-2 757 882 teaches, meanwhile, to provide that when the pivoting levers are engaged with certain wedging surfaces provided on a plate, they are out of range of a selector.
  • the mobile assembly forming a selector or actuator comprises a pusher which is used to move one or the other of the pivoting levers to against recall efforts to which they are subject.
  • This pusher must be sufficiently robust to perform this function and the electromagnet that controls it must be powerful, which amounts in practice to increase its size to such a point that it is not necessarily compatible with the division corresponding to the thickness of the frames of smooth craft.
  • the energy required to control the pusher increases considerably at high speed, which makes it necessary to size accordingly this pusher and the electromagnet.
  • the electromagnet associated with the pusher is subjected to accelerations and intense vibrations, which reduces its life.
  • the invention more particularly intends to remedy by proposing a new arrangement which makes it possible to mechanically stress the pusher of the reading device and the associated electromagnet, while ensuring a secure operation of the dobby.
  • the drive of the pivoting levers against the action of the second elastic return means is carried out thanks to the mechanical members which are dimensioned taking into account their essentially mechanical function, the selector of the reading device can then be lighter and controlled by a spring and a lower power electromagnet than in devices of the state of the art.
  • the invention makes it possible to push the pivoting levers which are not engaged on a passive jamming surface in a configuration where these levers do not interfere with the coupling member and, in this configuration, to actuate the reading device to position the selector in front of one or the other of these levers.
  • the selector then has a role of passive stop when the mechanical members release the pivoting levers. This selector is not subject to vibrations, which improves its life.
  • the invention also relates to a loom equipped with a dobby as described above.
  • a loom is likely to operate at high speed, without risk of breakage or premature wear of its reading device, so that it is more reliable and more economical than looms of the state of the art. .
  • the dobby shown in Figures 1 and 2 comprises a main shaft 1 animated with an intermittent rotational movement with stop every half-turn.
  • This shaft 1 receives a series of bearings in number equal to that of smooth frames or blades of the craft.
  • On each bearing is mounted crazy an eccentric 2 extending laterally by a plate 3.
  • On each eccentric 2 is mounted mad the opening of a rod 4 whose free end attaches to a pivoting arm 5 which ensures, thanks to connecting rods 6a and angle levers 6b, the vertical displacement of the heald frame 6 of the envisaged blade, shown very schematically.
  • the shaft 1 Between two adjacent eccentrics 2, the shaft 1, provided fluted, carries a drive disk 7 which is integral therewith and whose periphery is cut from two radial notches 7a diametrically opposite one another. These notches 7a are intended to selectively receive the terminal finger 8a of a pawl 8 articulated on an axis 9 carried by the side plate 3 of the eccentric 2 corresponding.
  • a spring 10 tends to permanently recall the finger 8a of the pawl 8 towards the shaft 1.
  • each pawl 8 The control of each pawl 8 is provided by means of two pivoting levers 11 hinged on fixed axes 12 oriented parallel to the shaft 1.
  • Each lever 11 has a generally angled profile, with two branches 111 and 112 oriented substantially at 90 ° to each other.
  • each lever 11 has a spout 113 capable of cooperating with a passive wedging surface 31 and an active wedging surface 32 formed at the periphery of the plate 3. Thanks to the spouts 113 and the jamming surfaces passive 31 and active jamming 32, the plate 3 can be immobilized in two positions, separated by a 180 ° rotation of the plate 3, according to the nozzle 113 shown to the left of Figure 1 cooperates with the surface 31, while the beak 113 shown on the right cooperates with the surface 32, as shown in Figure 1, or that the spout 113 shown on the left cooperates with the surface 32 while the spout 113 shown on the right cooperates with the surface 31.
  • levers 15 are articulated about the axes 12 and are each provided with a cross member 151 disposed at the end of a first branch 152 of the levers 15.
  • the cross members 151 extend in a generally parallel direction to the longitudinal axis XX 'of the shaft 1.
  • Each lever 11 is biased by a tension spring 13, one end of which is fixed to a hooking bar 14, the levers 11 tending, under the effect of the force due to the springs 13, to bring their respective beaks 113 closer together.
  • the shaft 1 With regard to the lever 11 located on the side of the pawl 8, the spring 13 tends to push the spout 113 to the pawl 8 and thus release the finger 8a of the notch 7a nearest.
  • Each lever 15 is also provided with a second branch 153 whose free end carries a roller 154 intended to cooperate with a control cam 16 keyed on the shaft 1.
  • the cam 16 is provided with two diametrically opposed notches 161 of commitment of pebbles 154.
  • the rotation of the shaft 1 has the effect of moving the cross members 151 towards the branches 111 of the levers 11 and to rotate the levers 11 which are not already engaged with a surface 31, in the direction of the arrow F 3 in Figure 1.
  • levers 11, whose bins 113 are already engaged with jamming surfaces 31, are out of reach of a selector 201 belonging to the reading device 20 of the dobby, this in accordance with the technical teaching In addition, in this position, these levers are also out of reach of the sleepers 151.
  • cross members 151 play the role of pushers which come, at each half-turn of the shaft 1 and simultaneously, push the branches 111 of the levers 11 and release the selectors 201.
  • levers 15 are independent of the selector 201 to which they do not transmit directly solicitations.
  • the reading device 20 is mounted between the latching bars 14 and comprises the selector 201 which is articulated around a fixed axis 202 and pivotable represented by the double arrow F 4 in FIG. 1.
  • the pivoting of the selector 201 is controlled by an electromagnet 203, fixedly mounted on a frame 204 from which the axis 202 extends, and a return spring 205.
  • the selector 201 can be moved by the electromagnet 203 when the cross members 151 exert a thrust force F 5 on the branches 111 in the direction of the shaft 1, this effort resulting in the pivoting of the levers 11 in the direction of the arrows F 3 and having the effect of spreading the notches 113 of the wedging surfaces 32.
  • the selector 201 can be tilted, as shown by the arrow F 4 , between a locking position of the lever 11 whose spout 113 is opposite the pawl 8 and a neutral position vis-à-vis the branch 111 of the other lever which is out of range of the selector 201 being tilted under the effect of the support of its spout 113 on the surface 31.
  • the single end 201a of the selector 201 can block one or the other of the levers 11.
  • levers 15 most of the mechanical control forces of the movement of the levers 11 is exerted by levers 15 and, more specifically, by the cross members 151, while the selector 201 simply opposes the pivoting of one or the other levers 11 under the effect of the springs 13.
  • the cross members 151 have a function of leveling the levers 11 of the dobby which they traverse simultaneously for all the blades.
  • the elements similar to those of the first embodiment bear identical references.
  • This embodiment differs from the previous one in that the locking member is not a pawl but a pair of locks 108 and 108 'hinged on pins 109a and 109'a integral with the plate 3 and comprising heel-forming limbs.
  • 108a, respectively 108 ' is capable of interacting with the notches 107 and 107' is provided on a disk 107 of the same type as the disk 7 of the first embodiment.
  • the locks 108 and 108 ' are each subjected to the action of a spring 110, respectively 110'.
  • these latches 108 and 108 ' are controlled by levers 11 subjected to the action of sleepers 151 belonging to levers 15 similar to those of the first embodiment.
  • the selector 201 is subjected to the action of a spring 205 and an electromagnet 203 and its movement F 4 is limited by a stop 206.
  • the branches 112 of the levers 11 are each surrounded by a plastic jacket 114, the material of which is chosen to limit the friction with respect to the surrounding elements of the dobby, such as the connecting rods 4. or the eccentrics 2, with which they are reduced clearance.
  • These folders also allow very precise positioning of the levers between the blades and avoid the use of additional parts, such as guide rakes. This makes it possible to improve the lifespan of levers 11 and neighboring elements.
  • the shirts 114 may be made of polyamide or polyacetal, optionally loaded.
  • the cross members 151 are in the lower position where it exerts on the right lever 11 a thrust force F 5 .
  • the sleepers of the second embodiment are in the upper position and do not interfere with the levers.
  • the locks 108 and 108 'can also be in accordance with the technical teaching of FR-A-2 802 218.
  • control of the levers 15 can be positive, for example by means of desmodromic cams, which makes it possible to envisage the suppression of the springs 17.

Claims (10)

  1. Rotationsschaftmaschine für eine Webmaschine, an jedem ihrer Schäfte umfassend:
    - ein schwingendes Teil (4), das mit einem Schaftrahmen (6) gekoppelt und einem Betätigungselement (2) zugeordnet ist, das beweglich auf einer Hauptwelle (1) der Schaftmaschine montiert ist,
    - ein bewegliches Kupplungsorgan (8, 108, 108'), das von dem Betätigungselement getragen wird, wobei das bewegliche Organ ersten elastischen Mitteln (10, 110, 110') unterworfen ist, um die Winkelverbindung des Betätigungselementes mit einer fest mit der Hauptachse verbundenen Scheibe (7) zu bewirken und
    - die Steuerung des beweglichen Kupplungsorgan mit Hilfe von zwei im Ganzen gesehen winkeligen Schwinghebeln (11), die einerseits der Wirkung einer Einlesevorrichtung (20) und andererseits derjenigen von zweiten elastischen Mitteln (13) unterworfen sind, die dazu neigen, den Schnabel (113) jedes Schwinghebels, sei es mit einer Klemmfläche (31), die entgegengesetzt zum beweglichen Kupplungsorgan an dem Betätigungselement vorgesehen ist, sei es mit dem beweglichen Kupplungsorgan in Eingriff zu bringen, in welchem Fall das bewegliche Kupplungsorgan (8, 108, 108') für eine Entkupplung des Betätigungselementes (2) in Bezug auf die Scheibe (7) gesteuert wird, während, wenn ein Hebel (11) im Eingriff mit der Klemmfläche (31) ist, er außer Reichweite eines Selektors (201) ist, der zu der Einlesevorrichtung gehört, wobei der Selektor mit einem Ende (201a) versehen ist, das geeignet ist, wechselseitig das Schwenken des einen oder des anderen der Winkelhebel (11) zu blockieren, dadurch gekennzeichnet, dass sie darüber hinaus mechanische Organe (15) umfasst, die geeignet sind, mindestens einen Hebel (11), dessen Schnabel (113) nicht im Eingriff mit der Klemmfläche (31) ist, gegen die Wirkung der zweiten elastischen Mittel (13) derart zu verschieben (F3), dass der Hebel (11) nicht mit der Winkelverschiebung des Selektors (201) interferiert.
  2. Rotationsschaftmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die mechanischen Organe (15) geeignet sind, gleichzeitig mit allen Hebeln (11) von allen Schäften (6) der Schaftmaschine zusammen zu wirken (F3), die nicht schon im Eingriff mit der Klemmfläche (31) sind.
  3. Rotationsschaftmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die mechanischen Organe Traversen (151) umfassen, die sich in im Ganzen gesehen parallelen Richtungen zur Längsachse (X-X') der Hauptwelle (1) erstecken.
  4. Rotationsschaftmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das bewegliche Kupplungsorgan eine Sperrklinke (8) ist, die auf einer von dem Betätigungselement getragenen Achse (9) angelenkt ist.
  5. Rotationsschaftmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das bewegliche Kupplungsorgan durch ein Paar Riegel (100, 108') gebildet wird, die von dem Betätigungselement (2) gesteuert und an diesem angelenkt sind.
  6. Rotationsschaftmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Selektor schwenkbar (201) ist und von einem Elektromagneten (203) gegen die Wirkung von elastischen Rückstellmitteln (205) gesteuert wird und geeignet ist, den einen oder den anderen der Hebel in entfernter Stellung seines Schnabels (113) in Bezug auf das Kupplungsorgan (8, 108, 108') zu halten.
  7. Rotationsschaftmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die mechanischen Organe (15) auf Achsen (12) angelenkt sind, die mit den jeweiligen Achsen für die Anlenkung der Hebel (11) übereinstimmen.
  8. Rotationsschaftmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die mechanischen Organe (15) von mindestens einem Nocken (16) gesteuert werden, der von der Hauptwelle (1) angetrieben wird, wobei die mechanischen Organe der Wirkung (F2) von elastischen Rückstellmitteln (17) in eine Position frei in Bezug auf die Hebel (11) unterworfen sind.
  9. Rotationsschaftmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens einer der Hebel (11) von einem Mantel (114) aus einem synthetischen Material umgeben ist, das kompatibel mit den Gleiten des Hebels in Bezug auf die benachbarten Elemente (4) ist, wobei der Mantel reduziertes Spiel in Bezug auf die benachbarten Elemente hat.
  10. Webmaschine, die mit einer Schaftmaschine (1 - 20) nach einem der vorhergehenden Ansprüche ausgerüstet ist
EP03356112A 2002-07-16 2003-07-15 Rotationsschaftmaschine für Webmaschinen und Webmaschine mit einer solchen Schaftmaschine Expired - Lifetime EP1382725B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0208972A FR2842538B1 (fr) 2002-07-16 2002-07-16 Ratiere rotative pour metier a tisser, et metier a tisser equipe d'une telle ratiere
FR0208972 2002-07-16

Publications (2)

Publication Number Publication Date
EP1382725A1 EP1382725A1 (de) 2004-01-21
EP1382725B1 true EP1382725B1 (de) 2006-11-02

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EP03356112A Expired - Lifetime EP1382725B1 (de) 2002-07-16 2003-07-15 Rotationsschaftmaschine für Webmaschinen und Webmaschine mit einer solchen Schaftmaschine

Country Status (9)

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US (1) US6938647B2 (de)
EP (1) EP1382725B1 (de)
JP (1) JP4405198B2 (de)
KR (1) KR101002686B1 (de)
CN (1) CN1320185C (de)
AT (1) ATE344341T1 (de)
DE (1) DE60309388T2 (de)
FR (1) FR2842538B1 (de)
TW (1) TWI299066B (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7475708B2 (en) * 2004-11-17 2009-01-13 Groz-Beckert Kg Shaft drive for heald shafts of weaving machines
DE102005010807B3 (de) * 2005-03-07 2006-04-06 Groz-Beckert Kg Schaftantrieb für Webmaschinenschäfte
US7403261B2 (en) * 2004-12-15 2008-07-22 Asml Netherlands B.V. Lithographic apparatus and device manufacturing method
FR2884527B1 (fr) * 2005-04-15 2007-07-13 Staubli Faverges Sca Mecanique d'armure a cames, methode d'assemblage d'une telle mecanique et metier a tisser comprenant une telle mecanique
DE102005059911B3 (de) * 2005-12-15 2007-02-08 Groz-Beckert Kg Schaftantrieb für eine Webmaschine
FR2899602B1 (fr) * 2006-04-11 2008-05-23 Staubli Faverges Sca Ratiere rotative, metier a tisser comprenant une telle ratiere et procede de commande d'une telle ratiere
FR2910494B1 (fr) * 2006-12-21 2009-01-30 Staubli Faverges Sca Bloc electro-aimant et dispositif de selection electromagnetique du mouvement des lames de ratieres et autres mecaniques de formation de la foule
DE102007020907B4 (de) 2007-04-26 2020-04-23 Picanol Verfahren und Vorrichtung zum Anfahren einer Webvorrichtung
FR2957366B1 (fr) * 2010-03-12 2012-04-13 Staubli Sa Ets Ratiere rotative et metier a tisser equipe d'une telle ratiere
FR2968317A1 (fr) * 2010-12-06 2012-06-08 Staubli Sa Ets Dispositif de selection pour le controle d'une ratiere, ensemble de selection et ratiere controlee par un tel dispositif de selection
CN102400257B (zh) * 2011-11-07 2012-11-07 常熟纺织机械厂有限公司 旋转式多臂开口机构
BE1024363B1 (nl) * 2016-07-08 2018-02-05 Picanol Nv Blokkeerinrichting en gaapvormingseenheid voor een weefmachine
CN106987959A (zh) * 2017-05-27 2017-07-28 江苏金龙科技股份有限公司 旋转多臂机的吸铁摆臂结构
JP7006086B2 (ja) * 2017-09-27 2022-01-24 ブラザー工業株式会社 画像記録装置
CN108588950A (zh) * 2018-04-03 2018-09-28 西安工程大学 一种三维间隔织机的多页综框开口机构
FR3080118B1 (fr) * 2018-04-16 2020-05-01 Staubli Faverges Ratiere rotative et metier a tisser

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EP0047791B1 (de) * 1980-09-12 1984-12-19 GebràœDer Sulzer Aktiengesellschaft Kupplungsanordnung zum Steuern der Schäfte einer Webmaschine
FR2515703B1 (de) 1981-11-05 1983-12-09 Staubli Sa Ets
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DE3614218C2 (de) * 1986-04-26 1994-06-30 Kaiser Gmbh & Co Kg Verfahren und Schaftsteuervorrichtung zum Steuern eines Schaftes
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IT1246701B (it) * 1990-07-11 1994-11-26 Nuovopignone Ind Meccaniche Ef Dispositivo di comando perfezionato per ratiere rotative ad altissima velocita'
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JP3320841B2 (ja) * 1992-07-10 2002-09-03 シュトイブリー・ファベルゲ 織機に使用されるカム機構
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FR2757882B1 (fr) * 1996-12-31 1999-02-19 Staubli Sa Ets Ratiere rotative et metier a tisser equipe d'une telle ratiere
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Publication number Publication date
JP2004036074A (ja) 2004-02-05
KR101002686B1 (ko) 2010-12-21
EP1382725A1 (de) 2004-01-21
FR2842538A1 (fr) 2004-01-23
TW200404110A (en) 2004-03-16
DE60309388D1 (de) 2006-12-14
FR2842538B1 (fr) 2004-10-29
CN1320185C (zh) 2007-06-06
US6938647B2 (en) 2005-09-06
DE60309388T2 (de) 2007-09-20
TWI299066B (en) 2008-07-21
CN1477250A (zh) 2004-02-25
ATE344341T1 (de) 2006-11-15
KR20040007283A (ko) 2004-01-24
US20040011417A1 (en) 2004-01-22
JP4405198B2 (ja) 2010-01-27

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