EP0078752B2 - Perfectionnements aux ratières rotatives - Google Patents

Perfectionnements aux ratières rotatives Download PDF

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Publication number
EP0078752B2
EP0078752B2 EP82420114A EP82420114A EP0078752B2 EP 0078752 B2 EP0078752 B2 EP 0078752B2 EP 82420114 A EP82420114 A EP 82420114A EP 82420114 A EP82420114 A EP 82420114A EP 0078752 B2 EP0078752 B2 EP 0078752B2
Authority
EP
European Patent Office
Prior art keywords
shaft
notch
eccentric
pawl
reading device
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
Application number
EP82420114A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0078752A1 (fr
EP0078752B1 (fr
Inventor
Joseph Palau
Jean-Paul Froment
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
Original Assignee
Staubli Faverges SCA
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Filing date
Publication date
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Application filed by Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP0078752A1 publication Critical patent/EP0078752A1/fr
Application granted granted Critical
Publication of EP0078752B1 publication Critical patent/EP0078752B1/fr
Publication of EP0078752B2 publication Critical patent/EP0078752B2/fr
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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

Definitions

  • the present invention relates to the dobbies of the rotary type for training the crowd on the looms.
  • This shaft is driven by an intermittent rotational movement and at each stop, that is to say every half-turn of the aforementioned shaft, the reading device must, at the level of each of the blades of the dobby (that is to say of the actuation assembly associated with each heald frame) and according to the design or weave to be obtained on the fabric being woven, securing the actuating element either with said shaft to control the oscillating part, either with the latter in order to operate its angular immobilization.
  • This selective joining is generally obtained using a movable coupling member in the form of a key or pawl, subjected to the action of two articulated levers arranged on either side of the shaft in order to actuate said movable member at the two stop positions thereof.
  • These two levers are generally coupled to a single rod capable of moving axially in one direction and in the other according to the command received from the reading device of the dobby, elastic return means ensuring the return of the movable member. , levers and connecting rod in a rest position.
  • a movable coupling member in the form of a key or pawl
  • the present invention intends to remedy, and this by arranging the pivoting control levers so that they exert a perfectly symmetrical action both on the movable coupling member for its operation for securing the shaft and the actuating element, only on the latter for its angular immobilization.
  • levers individually actuated by the reading device at one of their ends, are associated with elastic means which tend to return their opposite end in the form of a beak radially towards the shaft.
  • This spout is intended to cooperate with a notch formed in the periphery of a plate laterally secured to the actuating element in order to ensure the angular immobilization of the latter and of the corresponding oscillating part.
  • each lever and the notch of the lateral plate of the actuating element can be given a conical or flared profile which ensures on the one hand the perfectly precise centering of this plate and of 'on the other hand a tendency to eject this spout, the latter effect taking the place of safety in the event of incomplete engagement of the movable coupling member.
  • this member joined to its elastic return in the coupling position makes it possible to give its free end or finger and to each of the notches provided in the shaft or in the drive disc a profile suitable for avoiding any ejection component. Consequently, and unlike conventional systems, there is no need to provide any particular means for locking the movable member in the coupling position.
  • the dobby considered comprises a main shaft 1 animated by an intermittent rotational movement with stopping every 180 °.
  • this shaft 1 receives, with the interposition of an intermediate bearing, an eccentric 2 laterally secured to a plate 3; the cylindrical periphery of the eccentric 2 is engaged, still with the interposition of an intermediate bearing, inside the open part 4a with a circular profile of an actuating rod 4.
  • the free end of this rod 4 is coupled, through a pivoting arm 5, to the pull lever 6 connected to the corresponding heald frame of the envisaged blade.
  • a drive disc 7 whose axial opening is provided crenellated so as to cooperate with the periphery, itself crenellated, of the shaft 1.
  • the periphery of this disc 7 is cut out of 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 secured to the lateral plate 3 of the eccentric 2; a spring 10 tends to permanently recall the finger 8a of the pawl 8 in the direction of the shaft 1.
  • this pawl 8 For the control of this pawl 8 there are provided two levers 11 carried at articulation by fixed axes 12 added in the casing of the dobby parallel to the main shaft 1 thereof.
  • Each lever 11 has a square profile and is biased by a spring 13 so as to come into abutment against a corresponding fixed stop 14.
  • These two stops 14 thus define on each lever 11 an actuating tail 11 a and it is conceivable that the two tails, arranged in the same zone A, are capable of being controlled by pushers (shown diagrammatically in the form of arrows 15) of the device for reading the dobby.
  • This engagement which occurs in conjunction with one of the periodic stops of the shaft 1, operates the subsequent angular immobilization of the eccentric 2, so that the latter is retained at the stop when the shaft 1 is at again rotated.
  • the aforementioned engagement caused the pawl 8 to tilt by the action of the spout 11b against the heel 8b; the finger 8a of the aforementioned pawl is thus extracted from the notch 7a in which it was engaged. This extraction has the effect of uncoupling the drive disc 7 from the eccentric 2.
  • the invention is capable of being applied with advantage to rotary dobbies in which the actuating elements consist of cams against the periphery of which are held in abutment with follower rollers carried by traction levers coupled to the heald frames.
  • the coupling members may, in the known manner, take the form of keys movable radially in housings made laterally in the eccentrics or the cams so that they can be operated by the end nozzles 11 of the levers 11 when said spouts engage in the notches 3a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Transmission Devices (AREA)
EP82420114A 1981-10-29 1982-08-06 Perfectionnements aux ratières rotatives Expired EP0078752B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8120502A FR2515702A1 (fr) 1981-10-29 1981-10-29 Perfectionnements aux ratieres rotatives
FR8120502 1981-10-29

Publications (3)

Publication Number Publication Date
EP0078752A1 EP0078752A1 (fr) 1983-05-11
EP0078752B1 EP0078752B1 (fr) 1985-02-20
EP0078752B2 true EP0078752B2 (fr) 1988-07-06

Family

ID=9263606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82420114A Expired EP0078752B2 (fr) 1981-10-29 1982-08-06 Perfectionnements aux ratières rotatives

Country Status (6)

Country Link
US (1) US4444225A (ja)
EP (1) EP0078752B2 (ja)
JP (1) JPS5876544A (ja)
DE (1) DE3262430D1 (ja)
ES (1) ES515230A0 (ja)
FR (1) FR2515702A1 (ja)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540524B1 (fr) * 1983-02-07 1985-07-26 Staubli Sa Ets Ratiere rotative synchronisee pour metiers a tisser
FR2563541B1 (fr) * 1984-04-27 1986-07-11 Staubli Sa Ets Perfectionnements aux mecaniques d'armure du type rotatif pour metiers a tisser
DE3528504C2 (de) * 1985-08-08 1993-10-07 Kaiser Gmbh & Co Kg Steuervorrichtung einer Rotations-Schaftmaschine
FR2596425B1 (fr) * 1986-03-26 1988-05-20 Staubli Sa Ets Ratiere rotative pour machines a tisser
IT1237968B (it) * 1990-02-05 1993-06-19 Giobbe Srl Dispositivo desmodromico per il comando e controllo di una ratiera rotativa in macchine tessili
FR2662186B1 (fr) * 1990-05-18 1992-08-28 Staubli Sa Ets Procede pour le montage des elements d'actionnement des ratieres rotatives pour metiers a tisser, et ratieres obtenues.
US5214834A (en) * 1990-05-18 1993-06-01 S.A. Des Etablissments Staubli Process for assembling the actuation elements of a rotating dobby
IT1243890B (it) * 1990-11-05 1994-06-28 Giobbe Srl Dispositivo per il comando e controllo di una ratiera rotativa di macchine tessili con leva profilata a camma e relativi mezzi di contrasto cooperanti
FR2757883B1 (fr) * 1996-12-31 1999-02-19 Staubli Sa Ets Ratiere rotative et metier a tisser equipe d'une telle ratiere
US6682250B2 (en) 2001-11-07 2004-01-27 Lockheed Martin Corporation Position-adjustable fastening apparatus and method
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
DE102005059911B3 (de) * 2005-12-15 2007-02-08 Groz-Beckert Kg Schaftantrieb für eine Webmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2741199C3 (de) * 1977-07-21 1981-08-13 Gebrüder Sulzer AG, 8401 Winterthur Kupplung zum Steuern der Schäfte einer Webmaschine oder der Legeschiene einer Kettenwirkmaschine
SU761627A1 (ru) * 1978-08-10 1980-09-07 Vnii Legkogo Textil Masch Ремизоподъемная каретка для ткацкого станка 1
DE2909131A1 (de) * 1979-03-08 1980-09-11 Johann Kaiser Gmbh & Co Kg Mas Schaftmaschine fuer webmaschinen
DE2922319C2 (de) * 1979-05-31 1982-05-06 Grosse Webereimaschinen Gmbh, 7910 Neu-Ulm Exzenter-Schaftmaschine für Webmaschinen
FR2478682A1 (fr) * 1980-03-20 1981-09-25 Staubli Sa Ets Perfectionnements aux ratieres du type rotatif pour metiers a tisser
DE3067166D1 (en) * 1980-09-19 1984-04-26 Sulzer Ag Coupling arrangement for operating the heald shafts of a loom

Also Published As

Publication number Publication date
JPS5876544A (ja) 1983-05-09
US4444225A (en) 1984-04-24
JPH0153371B2 (ja) 1989-11-14
EP0078752A1 (fr) 1983-05-11
FR2515702A1 (fr) 1983-05-06
ES8305436A1 (es) 1983-05-01
ES515230A0 (es) 1983-05-01
DE3262430D1 (en) 1985-03-28
FR2515702B1 (ja) 1983-12-09
EP0078752B1 (fr) 1985-02-20

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