EP0568470B1 - Dispositif de verrouillage et de présélection pour ratières lourdes du type à pas fermé - Google Patents

Dispositif de verrouillage et de présélection pour ratières lourdes du type à pas fermé Download PDF

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Publication number
EP0568470B1
EP0568470B1 EP93420166A EP93420166A EP0568470B1 EP 0568470 B1 EP0568470 B1 EP 0568470B1 EP 93420166 A EP93420166 A EP 93420166A EP 93420166 A EP93420166 A EP 93420166A EP 0568470 B1 EP0568470 B1 EP 0568470B1
Authority
EP
European Patent Office
Prior art keywords
hook
dobby
lever
oscillating lever
oscillating
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
EP93420166A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0568470A1 (fr
Inventor
Siegmund Horst Tremer
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.)
Staeubli GmbH
Original Assignee
Staeubli und Trumpelt GmbH Maschinenfabrik
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 Staeubli und Trumpelt GmbH Maschinenfabrik filed Critical Staeubli und Trumpelt GmbH Maschinenfabrik
Publication of EP0568470A1 publication Critical patent/EP0568470A1/fr
Application granted granted Critical
Publication of EP0568470B1 publication Critical patent/EP0568470B1/fr
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
    • D03C1/10—Centre-shed dobbies, i.e. shed formed by lifting some threads and lowering the others from central shed-closed position
    • 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
    • D03C1/26—Facilitating engagement of lifting-hooks with draw-knives

Definitions

  • the present invention relates to heavy dobbies used for training the crowd on very large weaving machines, of the kind in particular of those used for the manufacture of tubular fabrics suitable for the production of felts or dry endless filters for pulp industry.
  • Each of the heald frames CL mounted on the weaving machine is connected by a connecting rod 1 to a corresponding oscillating lever 2, articulated at 2 a on the fixed frame; one of the ends of each lever 2, provided with a crazy stop 2 b , is equipped with a double tilting hook 3 which is pivotally controlled by pushers (arrows 4) of the reading mechanism of the dobby in order to come selectively engaged with one or the other of two actuating knives 5 which are controlled to move alternately in unison in opposite directions.
  • each oscillating lever comprise two movable locking members associated with elastic return means which tend to apply them laterally against the double tilting hook to immobilize the latter angularly when it has been grasped by a actuating knife, while ensuring its release at the time of the order or selection, that is to say when the two knives come simultaneously into contact with the considered oscillating lever.
  • the elastic means associated with the movable locking members exert on each double tilting hook an angular retaining effect greater than the tilting effect applied to this hook by the pushers. of the reading mechanism, so that these pushers can begin to act on the hook before the oscillating lever in question has arrived at the selection position, thereby allowing the pre-selection of said hook.
  • the reference 11 designates one of the oscillating levers which are pivotally mounted on a common axis 12 and which are coupled by a connecting rod 13 to the different heald frames of the corresponding weaving machine.
  • each lever 11 carries a double hook 14 which is tiltably mounted on a small axis 15 and which is intended to receive the action of two pushers (arrow 16) of the reading mechanism of the dobby to engage one or the other of two actuating knives 17.
  • These knives 17 are actuated so as to move alternately in opposite directions relative to each other. It has been assumed in the present case that these knives 17 move along a semi-circular profile having the common axis 12 as their center.
  • each double hook 14 With each double hook 14 are associated two movable locking members constituted by two small friction pads 18 which pivot on studs 19 provided laterally on the lever 11 on either side of the axis 15 and which are connected one to the other by a leaf spring 20 with a loop-shaped profile, the ends of which are secured to said pads.
  • This spring 20 tends to spread the actuating tails of the two pads 18 in order to apply their inner edge against the rounded lower part of the double hook 14, and it will be noted that at this working position, the aforementioned tails protrude laterally of the profile of the lower end of the oscillating levers 11.
  • the oscillating lever 11 is consequently driven by this knife 17 and moves to the left, as illustrated in FIG. 3.
  • the same effect obviously occurs when it is the opposite knife (right on the drawing) which has been selected, as shown in fig. 4.
  • this spring 20 has been arranged so that it exerts on this locking pad 18 a greater angular retention force than that which is applied by one or other of the pushers 16 of the reading mechanism on the hook 14 with a view to selection, it is possible to ensure that the chosen pusher 16 begins to act on the hook 16 before the lever 11 has reached the vertical selection position according to FIG. 2; of course, this hook will not tilt until it has been released by the two pads 18, but such a structure allows the pre-selection of the hooks and levers; the reading mechanism consequently has a longer period of time for selection and in this way any risk of defect is avoided even at the high operating speeds now required for the dobby.
  • the device according to the invention constituted by the pads 18 and the springs 20 therefore ensures in practice the positive locking of the hooks 14 (anti-rebound effect) and the pre-selection thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
EP93420166A 1992-04-28 1993-04-21 Dispositif de verrouillage et de présélection pour ratières lourdes du type à pas fermé Expired - Lifetime EP0568470B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9205481 1992-04-28
FR9205481A FR2690465A1 (fr) 1992-04-28 1992-04-28 Dispositif de verrouillage et de pré-sélection pour ratières lourdes du type à pas ferme.

Publications (2)

Publication Number Publication Date
EP0568470A1 EP0568470A1 (fr) 1993-11-03
EP0568470B1 true EP0568470B1 (fr) 1995-02-15

Family

ID=9429512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93420166A Expired - Lifetime EP0568470B1 (fr) 1992-04-28 1993-04-21 Dispositif de verrouillage et de présélection pour ratières lourdes du type à pas fermé

Country Status (6)

Country Link
US (1) US5316049A (enrdf_load_stackoverflow)
EP (1) EP0568470B1 (enrdf_load_stackoverflow)
JP (1) JP3264033B2 (enrdf_load_stackoverflow)
CZ (1) CZ75193A3 (enrdf_load_stackoverflow)
DE (1) DE69300061T2 (enrdf_load_stackoverflow)
FR (1) FR2690465A1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19861000B4 (de) * 1997-02-06 2006-11-02 Texo Ab Dobby zur Steuerung der Bewegungen der Schäfte eines Webautomaten
DE19804041B4 (de) * 1997-02-06 2005-10-06 Texo Ab Dobby zur Steuerung der Bewegungen der Schaftrahmen eines Webautomaten
WO2002020311A1 (en) * 2000-09-08 2002-03-14 Magna Interior Systems Inc. Cargo management system useful as a table

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE130027C (enrdf_load_stackoverflow) *
DE106666C (enrdf_load_stackoverflow) *
DE143983C (enrdf_load_stackoverflow) *
US1759530A (en) * 1928-08-30 1930-05-20 Wonder Weave Inc Loom shedding mechanism
DE915800C (de) * 1952-07-31 1954-07-29 Brock Soehne Maschinenfabrik W Geschlossenfachschaftmaschine
DE3119476A1 (de) * 1981-05-15 1983-02-03 Centralen Savet na Naučno-techničeskite Sajuzi, Sofija Elektromagnetischer kupplungsmechanismus einer schaftmaschine
FR2647124B1 (fr) * 1989-05-19 1991-07-12 Staubli Sa Ets Ratiere negative a balances oscillantes pour metiers a tisser
FR2663347A1 (fr) * 1990-06-15 1991-12-20 Staubli Trumpelt Gmbh Maschine Ratiere a foule fermee pour metiers a tisser.
JP6024209B2 (ja) 2012-05-29 2016-11-09 株式会社豊田自動織機 バッテリの充電器制御システム

Also Published As

Publication number Publication date
JP3264033B2 (ja) 2002-03-11
FR2690465A1 (fr) 1993-10-29
DE69300061T2 (de) 1995-08-24
DE69300061D1 (de) 1995-03-23
CZ75193A3 (en) 1993-11-17
US5316049A (en) 1994-05-31
FR2690465B1 (enrdf_load_stackoverflow) 1994-07-13
EP0568470A1 (fr) 1993-11-03
JPH0617344A (ja) 1994-01-25

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