EP0851046B1 - Rotationsschaftmaschine und Webmaschine mit einer solchen Schaftmaschine - Google Patents

Rotationsschaftmaschine und Webmaschine mit einer solchen Schaftmaschine Download PDF

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Publication number
EP0851046B1
EP0851046B1 EP97420241A EP97420241A EP0851046B1 EP 0851046 B1 EP0851046 B1 EP 0851046B1 EP 97420241 A EP97420241 A EP 97420241A EP 97420241 A EP97420241 A EP 97420241A EP 0851046 B1 EP0851046 B1 EP 0851046B1
Authority
EP
European Patent Office
Prior art keywords
bearing surface
plate
dobby
rotary dobby
rotary
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
EP97420241A
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English (en)
French (fr)
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EP0851046A1 (de
Inventor
Jean-Paul Froment
Jean-Pierre Pages
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
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Application filed by Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP0851046A1 publication Critical patent/EP0851046A1/de
Application granted granted Critical
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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
    • D03C1/14—Features common to dobbies of different types
    • D03C1/16—Arrangements of dobby in relation to loom
    • 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 present invention relates to a rotary dobby for ordering heald frames mounted on a loom and a loom equipped with such a dobby.
  • the movement alternating vertical heald frames is provided by oscillating parts which can be formed, depending on the case, by rod-lever assemblies or by roller-bearing levers, these oscillating parts being controlled by elements actuation in the form of an eccentric in the first case or cam in the second.
  • actuating elements are mounted on a main mechanical shaft which is animated by a intermittent rotation movement and, at each stop, makes all the U-turns, from the aforementioned shaft, the reading must, at each of the dobby blades, that is to say the actuation unit associated with each frame smooth, and depending on the design or weave to be obtained on the fabric being woven, securing the actuating element either with the shaft, to control the oscillating part, or with a fixed point in order to operate the angular immobilization of the latter.
  • This selective joining is generally obtained at using a movable key-shaped coupling member or ratchet subjected to the action of two pivoting levers arranged on either side of the tree in order to activate this movable member at the two stop positions thereof, each pair of pivoting levers being placed under the dependence of the dobby reading device.
  • the invention relates to a rotary dobby for a weaving loom comprising, at each of its blades, an oscillating part coupled to a heald frame and associated with an actuating element mounted idly on a shaft of said dobby, a mobile coupling member carried by a plate laterally secured to the actuating element, said movable member being subjected to elastic means for operate the angular connection of said plate with a disc integral with said shaft, and two pivoting levers subjected to the action, on the one hand of the reading device and, on the other hand to that of elastic means which tend to engage the spouts said levers with one of two wedging surfaces of said tray.
  • This dobby is characterized in that the beak of each pivoting lever has an external bearing surface and an internal bearing surface, said bearing surfaces having angles at the top of different values.
  • the internal and external scopes can respectively cooperate with each of the two surfaces trapping and their arrangement allows their heights do not add up, so the pivoting required for each lever only corresponds to the height of the highest range.
  • the internal span is provided in the thickness of the span external. Thanks to this aspect of the invention, the height of the external scope alone defines the angular displacement maximum so that the spout of each lever escapes from surfaces jamming provided at the periphery of the plate.
  • the angle at the top of the internal range has a value greater than the angle at the top of the outer staff.
  • the angle at the top of the internal span has a value less than the angle at the top of the staff external.
  • the two surfaces of jamming of the plate include a notch capable of receiving the beak of one of the pivoting levers and a pin capable of penetrating in the spout of the other pivoting lever. This provision of wedging surfaces is suitable for cooperation with the forms the spans of the swivel lever spouts.
  • this notch and this tooth are diametrically opposed on the periphery of the plateau.
  • the invention finally relates to a loom equipped with a dobby as previously described.
  • the dobby represented in FIG. 1 comprises a main shaft 1 animated by an intermittent rotational movement with stopping every half-turn.
  • This shaft 1 receives a series of bearings in number equal to that of the heald frames or looms of the loom.
  • On each bearing is mounted an eccentric eccentric 2 laterally secured to a plate 3.
  • On each eccentric 2 is mounted convinced the opening of a connecting rod 4 whose free end is harnessed to a pivoting arm 5 which ensures, thanks to a cable 6 a , the vertical displacement of the heald frame 6 of the envisaged blade, shown very schematically.
  • the shaft 1 Between two contiguous eccentrics 2, the shaft 1, provided grooved, carries a drive disc 7 which is integral with it and the periphery of which is cut out by two radial notches 7 which are diametrically opposite one another. These notches 7 a are intended to selectively receive the terminal finger 8 a of a pawl 8 articulated on an axis 9 carried by the lateral plate 3 of the corresponding eccentric 2.
  • a spring 10 tends to permanently return the finger 8 a from the pawl 8 in the direction of the shaft 1.
  • each pawl 8 The control of each pawl 8 is ensured using two pivoting levers 11 carried at articulation by axes fixed 12 oriented parallel to the shaft 1.
  • Each lever 11 has a generally angled profile and is stressed by a spring 13 in order to bear against a fixed stop corresponding 14.
  • Each lever 11 comprises an actuating tail 15 likely to be selectively controlled by a pusher belonging to the dobby reading device and represented by arrows 16.
  • each lever 11 has a spout 17 capable of cooperating with two wedging surfaces 18 and 19 formed on the periphery of the plate 3. Thanks to the spouts 17 and the wedging surfaces 18 and 19, the plate 3 can therefore be immobilized in two positions separated by a 180 ° rotation of the plate 3 depending on whether the spout 17 shown at left of Figure 1 cooperates with the surface 18 while the spout 17 shown on the right cooperates with the surface 19 or that the beak 17 shown on the left cooperates with surface 19 while the spout 17 shown on the right cooperates with the surface 18.
  • the external bearing surface 20, represented active in FIG. 3, has a geometry adapted to press against the surfaces delimiting the notch 19.
  • the angle at the top of this bearing surface 20 is noted ⁇ .
  • An internal bearing surface 21 is defined in hollow in the spout 17 and we note ⁇ its angle at the top.
  • the geometry of the bearing surface 21 is defined so that it is capable of pressing against the external surface of a tooth 18 a belonging to the wedging surface 18 as shown in FIG. 4.
  • the angle at the apex ⁇ is greater than the angle at the apex ⁇ , so that it is easier to release the spout 17 when it cooperates with the surface 18 than when it cooperates with the surface 19, which is similar to the operating mode of the dobby of the invention in which the wedging obtained with the surface 18 is "passive" while the wedging obtained with the notch 19 is "active".
  • the bearing surface 21 has a height H 2 which can be different from the height H 1 of the bearing surface 20. It is noted in particular that the internal bearing 21 is formed in the thickness of the external bearing 20, that is that is, the height H 2 is less than the height H 1 .
  • the apex angle ⁇ 'of the internal bearing 21 has a value less than the apex angle ⁇ ' of the external bearing 20.
  • This configuration can be used when effective or "active" jamming must be carried out on a tooth corresponding to tooth 18 of FIG. 4 while the escape from the bearing surface 20 must be facilitated.
  • This configuration can be used when the wedging surface provided with a tooth is arranged near the end of the pawl 8.
  • a loom equipped with a dobby as above described can operate faster, with less wear and making less noise than a loom equipped with a dobby of the prior art.
  • the description which above was given only as an example and does not in no way limits the scope of the invention. It is understood, in particular, that the invention is likely to be applied to dobbies in which the actuating elements are not made up of eccentrics associated with connecting rods, but by cams profiles for controlling roller levers coupled to heald frames 6.
  • the tilting pawls seem the most embodiment advantageous for movable coupling members, it is possible however have recourse to displacement key mechanism radial.
  • the movable coupling member can be composed of several parts, for example two hooks, two latches or two keys.

Claims (7)

  1. Rotationsschaftmaschine für eine Webmaschine mit - an jedem ihrer Schäfte - einem Schwingteil (4), verbunden mit einem Schaftrahmen (6) und einem Betätigungselement (2), das lose auf eine Hauptwelle (1) der genannten Schaftmaschine montiert ist, einem beweglichen Kupplungsorgan (8), getragen durch eine Platte (3), seitlich fest verbunden mit dem Betätigungselement, wobei das genannte bewegliche Organ elastischen Einrichtungen (10) ausgesetzt ist, um die Winkelverbindung der genannten Platte mit einer fest mit der Hauptwelle (1) verbundenen Scheibe (7) herzustellen, und zwei Schwinghebeln (11), die einerseits der Wirkung einer Einlesvorrichtung (16) ausgesetzt sind und andererseits derjenigen von elastischen Einrichtungen (13), die bestrebt sind, die Schnäbel (17) der genannten Hebel mit einer der beiden Klemmflächen (18, 19) der genannten Platte in Eingriff zu bringen,
    dadurch gekennzeichnet,
    daß der genannte Schnabel jedes Schwinghebels eine äußere Auflagefläche (20) und eine innere Auflagefläche (21) aufweist, wobei die genannten Auflageflächen Spitzenwinkel (α,β,α',β') mit unterschiedlichen Werten haben.
  2. Rotationsschaftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die innere Auflagefläche (21) in der Dicke der äußeren Auflagefläche (20) ausgespart ist.
  3. Rotationsschaftmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Spitzenwinkel (β) der inneren Auflagefläche (21) einen größeren Wert hat als der Spitzenwinkel (α) der äußeren Auflagefläche (20).
  4. Rotationsschaftmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Spitzenwinkel (β') der inneren Auflagefläche einen kleineren Wert hat als der Spitzenwinkel (α') der äußeren Auflagefläche (20).
  5. Rotationsschaftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Klemmflächen (18, 19) der Platte (3) einen Einschnitt (19) aufweisen, der den Schnabel (17) eines der Schwinghebel (11) aufnehmen kann, und einen Zahn (18a), der in den Schnabel (17) des anderen Schwinghebels (11) eindringen kann.
  6. Rotationsschaftmaschine nach Anspruch 5, dadurch gekennzeichnet, daß der genannte Einschnitt (19) und der genannte Zahn (18a) sich auf dem Rand der Platte (3) diametral gegenüberstehen.
  7. Webmaschine, ausgerüstet mit einer Schaftmaschine nach einem der vorangehenden Ansprüche.
EP97420241A 1996-12-31 1997-12-23 Rotationsschaftmaschine und Webmaschine mit einer solchen Schaftmaschine Expired - Lifetime EP0851046B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9616392 1996-12-31
FR9616392A FR2757883B1 (fr) 1996-12-31 1996-12-31 Ratiere rotative et metier a tisser equipe d'une telle ratiere

Publications (2)

Publication Number Publication Date
EP0851046A1 EP0851046A1 (de) 1998-07-01
EP0851046B1 true EP0851046B1 (de) 2000-03-29

Family

ID=9499448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97420241A Expired - Lifetime EP0851046B1 (de) 1996-12-31 1997-12-23 Rotationsschaftmaschine und Webmaschine mit einer solchen Schaftmaschine

Country Status (8)

Country Link
US (1) US5918645A (de)
EP (1) EP0851046B1 (de)
JP (1) JP3545187B2 (de)
KR (1) KR100418081B1 (de)
CN (1) CN1057353C (de)
DE (1) DE69701559T2 (de)
ES (1) ES2143838T3 (de)
FR (1) FR2757883B1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002069783A (ja) * 2000-09-05 2002-03-08 Tsudakoma Corp 織機における経糸開口装置
US6682250B2 (en) 2001-11-07 2004-01-27 Lockheed Martin Corporation Position-adjustable fastening apparatus and method
FR2842538B1 (fr) * 2002-07-16 2004-10-29 Staubli Sa Ets Ratiere rotative pour metier a tisser, et metier a tisser equipe d'une telle ratiere
ITMI20022151A1 (it) * 2002-10-10 2004-04-11 Fimtextile Spa Dispositivo per attuare la programmazione di ratiere rotative per macchine di tessitura comportante mezzi di comando a motore elettrico rotativo perfezionati
DE10343377B3 (de) * 2003-09-17 2005-04-28 Groz Beckert Kg Schaftantrieb für Webmaschinenschäfte
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
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
FR2957366B1 (fr) * 2010-03-12 2012-04-13 Staubli Sa Ets Ratiere rotative et metier a tisser equipe d'une telle ratiere
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
CN102995212B (zh) * 2012-12-24 2013-12-11 常熟纺织机械厂有限公司 旋转式多臂开口装置的选综执行机构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515702A1 (fr) * 1981-10-29 1983-05-06 Staubli Sa Ets Perfectionnements aux ratieres rotatives
EP0109999B1 (de) * 1982-12-03 1988-03-09 GebràœDer Sulzer Aktiengesellschaft Kupplungsanordnung zum Steuern der Schäfte einer Webmaschine
FR2540524B1 (fr) * 1983-02-07 1985-07-26 Staubli Sa Ets Ratiere rotative synchronisee pour metiers a tisser
DE3414639A1 (de) * 1984-04-18 1985-10-24 W. Schlafhorst & Co, 4050 Mönchengladbach Rotations-schaftmaschine
FR2563541B1 (fr) * 1984-04-27 1986-07-11 Staubli Sa Ets Perfectionnements aux mecaniques d'armure du type rotatif pour metiers a tisser
DE3614203C2 (de) * 1986-04-26 1994-06-30 Kaiser Gmbh & Co Kg Schaftsteuervorrichtung einer Webmaschine
IT1254219B (it) * 1992-02-25 1995-09-14 Eccentrico perfezionato per ratiera rotativa

Also Published As

Publication number Publication date
ES2143838T3 (es) 2000-05-16
JP3545187B2 (ja) 2004-07-21
EP0851046A1 (de) 1998-07-01
US5918645A (en) 1999-07-06
KR19980064815A (ko) 1998-10-07
KR100418081B1 (ko) 2004-05-07
FR2757883B1 (fr) 1999-02-19
CN1057353C (zh) 2000-10-11
FR2757883A1 (fr) 1998-07-03
DE69701559D1 (de) 2000-05-04
CN1186880A (zh) 1998-07-08
JPH10237736A (ja) 1998-09-08
DE69701559T2 (de) 2000-07-27

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