EP0274455B1 - Perfectionnements aux ratières négatives du type à balances oscillantes - Google Patents

Perfectionnements aux ratières négatives du type à balances oscillantes Download PDF

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Publication number
EP0274455B1
EP0274455B1 EP88420007A EP88420007A EP0274455B1 EP 0274455 B1 EP0274455 B1 EP 0274455B1 EP 88420007 A EP88420007 A EP 88420007A EP 88420007 A EP88420007 A EP 88420007A EP 0274455 B1 EP0274455 B1 EP 0274455B1
Authority
EP
European Patent Office
Prior art keywords
hook
dobby
wth
articulated
bearing face
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
EP88420007A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0274455A1 (fr
Inventor
Joseph Palau
Jean-Pierre Pages
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
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 Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP0274455A1 publication Critical patent/EP0274455A1/fr
Application granted granted Critical
Publication of EP0274455B1 publication Critical patent/EP0274455B1/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
    • D03C1/14—Features common to dobbies of different types
    • D03C1/20—Hooks; Lifters

Definitions

  • the present invention relates to negative dobbies of the oscillating balance type, intended for controlling heald frames on weaving machines.
  • each frame C is coupled by a cable and / or a pulling arm 1 to a suspension lever 2 articulated and 3 on the frame 4 of the dobby.
  • a connecting rod 5 connects each lever 2 to a balance-carrying lever 6, the set of levers 6 being pivotally supported on a common axis 7; each lever 6 is equipped at its free end with a balance 8 provided at its ends with articulated hooks 9.
  • an actuating mechanism comprising two cross members 11 which are carried by two lateral rockers 12 so as to come to bear against the heel of the hooks 9.
  • Any actuation mechanism for example formed by arms 13 coupled to the rockers 12 and wedged eccentrically on a transverse shaft 14, impart to said rockers a continuous oscillating movement around their fixed pivot 15.
  • each of the two articulated hooks 9 carried by each balance 8 is profiled so as to cooperate with a corresponding retaining member 16 in the form of a hook, which swivels around a common axis 17 under the effect of a reading device 18 of the peg or perforated paper type, which device contains the weaving program for the production of the envisaged fabric.
  • This embodiment has significant drawbacks from a practical point of view.
  • the invention essentially consists in constituting the pivoting retaining member associated with each of the two hooks carried by each balance, in the form of a lock disposed between the bearing face of the hook in question and the hinge pin. of the latter on the corresponding scale.
  • each retaining lock is advantageously formed by a reference lever 19, pivotally carried on one or the other of two common transverse axes 20, similar to axes 17 of the conventional construction according to FIG. 1.
  • This lever 19 has two radial arms, one of which is coupled by an independent pusher 21 to the reading device 22 of the dobby, while the other is profiled at its free end to cooperate with the bearing face provided in the corresponding hook, referenced 23, of the balance 8 envisaged.
  • Fig. 4 shows on a still larger scale the lower hook 23 of one of the scales and the retaining latch 19 which is associated with it.
  • the pivot axis 20 which carries each latch 19 being disposed between the bearing face 23a of the hook 23 and the pivot axis 24 of said hook on the scale 8, this latch works in compression, it can have a very reduced mass compared to that of conventional hooks 16 working in bending.
  • each common axis 20 is located, not strictly on the straight line which connects the bearing face 23a to the pivot or axis 24, but to slightly offset outwardly from said straight line.
  • This offset generates a torque which tends to rotate the lock in the direction indicated by the arrow F, which has the effect of applying the internal face of the hook 23, preferably provided for this purpose with a boss 23b against the axis.
  • common 20 note that to ensure a better support of the hook 23, the latch 19 is partially indented around the axis 20.
  • each latch 19 is obtained using an independent pusher 21 actuated by the reading device 22. It is however possible to adopt the actuation mode illustrated diagrammatically in FIG. 6 of the drawing, using a reading device 25 which comprises for each balance 8 a single pusher 26, possibly doubled by an identical pusher intended for reverse gear. The free end of each pusher 26 is coupled to the midpoint of a beam 27 which is articulated with the two retaining latches 19 associated with the envisaged balance.
  • Springs or other elastic means 28 tend to hold each latch 19 applied against a fixed stop 29, while two movable stops 30 are provided carried by a balance 31 which a central shaft 32 drives with a continuous oscillating movement, in synchronism with the oscillating movement of the above-mentioned rockers 12. It will be noted that the stops 29 and 30 are common to all of the locks 19 of the dobby.
  • each of the two axes 20 on which the latches 19 of each row are articulated is preferably mounted in the teeth of a support 33 in the form of a comb, as shown in FIG. 3.
  • Each axis 20 is thus perfectly supported and can in fact have a reduced diameter despite the importance of the forces exerted on it.
  • the bottom of the teeth of the supports or combs 33 is suitable for forming a guide for the angular displacement of the spouts 23 in the case where the cross member 11 associated with the latter would not bear perfectly flat against the rear heel of the spout considered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Level Indicators Using A Float (AREA)
  • Mechanical Control Devices (AREA)
  • Pivots And Pivotal Connections (AREA)
EP88420007A 1987-01-09 1988-01-07 Perfectionnements aux ratières négatives du type à balances oscillantes Expired - Lifetime EP0274455B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8700297A FR2609476B1 (fr) 1987-01-09 1987-01-09 Perfectionnements aux ratieres negatives du type a balances oscillantes
FR8700297 1987-01-09

Publications (2)

Publication Number Publication Date
EP0274455A1 EP0274455A1 (fr) 1988-07-13
EP0274455B1 true EP0274455B1 (fr) 1990-10-10

Family

ID=9346872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420007A Expired - Lifetime EP0274455B1 (fr) 1987-01-09 1988-01-07 Perfectionnements aux ratières négatives du type à balances oscillantes

Country Status (9)

Country Link
US (1) US4832087A (es)
EP (1) EP0274455B1 (es)
JP (1) JPS63175136A (es)
BR (1) BR8707018A (es)
CS (1) CS274619B2 (es)
DE (1) DE3860757D1 (es)
ES (1) ES2018086B3 (es)
FR (1) FR2609476B1 (es)
SU (1) SU1537144A3 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647124B1 (fr) * 1989-05-19 1991-07-12 Staubli Sa Ets Ratiere negative a balances oscillantes pour metiers a tisser
FR2651803B1 (fr) * 1989-09-14 1991-11-08 Staubli Sa Ets Ratiere a double leve du type a balances tirees pour machines a tisser.
FR2672308B1 (fr) * 1991-02-01 1993-05-07 Staubli Sa Ets Mecanique d'armure pour la formation de la foule sur les machines a tisser.
EP0745712A1 (de) 1995-05-29 1996-12-04 Stoffel & Sohn AG Nockensteuerung für eine Hochleistungs-Federrückzug-Schaftmaschine
DE10127098C1 (de) * 2001-06-02 2003-03-13 Dornier Gmbh Lindauer Vorrichtung zur Übertragung von Bewegungen und Kräften, insbesondere in Schaftwebmaschinen
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
FR2972008B1 (fr) * 2011-02-25 2013-03-29 Staubli Sa Ets Entretoise et sous-ensemble de separation des leviers d'une machine de formation de la foule, machine comprenant un tel sous-ensemble et procede de montage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH609103A5 (en) * 1976-04-08 1979-02-15 Staeubli Ag Dobby
FR2392147A1 (fr) * 1977-05-27 1978-12-22 Staubli Sa Ets Perfectionnements aux ratieres a double leve a balances et crochets de retenue
FR2543172B1 (fr) * 1983-03-22 1985-10-25 Staubli Sa Ets Perfectionnements aux ratieres a balances pour metiers a tisser
JPS61637A (ja) * 1984-06-11 1986-01-06 村田機械株式会社 ドビ−機における読取装置

Also Published As

Publication number Publication date
JPS63175136A (ja) 1988-07-19
DE3860757D1 (de) 1990-11-15
JPH0331814B2 (es) 1991-05-08
US4832087A (en) 1989-05-23
BR8707018A (pt) 1988-08-09
CS274619B2 (en) 1991-09-15
EP0274455A1 (fr) 1988-07-13
FR2609476B1 (fr) 1990-12-07
CS11488A2 (en) 1990-08-14
SU1537144A3 (ru) 1990-01-15
ES2018086B3 (es) 1991-03-16
FR2609476A1 (fr) 1988-07-15

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