EP0418177B1 - Doppelhub-Schaftmaschine mit gezogenen Balancehebeln für Webmaschinen - Google Patents

Doppelhub-Schaftmaschine mit gezogenen Balancehebeln für Webmaschinen Download PDF

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Publication number
EP0418177B1
EP0418177B1 EP90420403A EP90420403A EP0418177B1 EP 0418177 B1 EP0418177 B1 EP 0418177B1 EP 90420403 A EP90420403 A EP 90420403A EP 90420403 A EP90420403 A EP 90420403A EP 0418177 B1 EP0418177 B1 EP 0418177B1
Authority
EP
European Patent Office
Prior art keywords
plates
dobby
oscillating
constituted
members
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
EP90420403A
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English (en)
French (fr)
Other versions
EP0418177A1 (de
Inventor
Joseph Palau
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
Original Assignee
Staubli Faverges SCA
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Filing date
Publication date
Application filed by Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP0418177A1 publication Critical patent/EP0418177A1/de
Application granted granted Critical
Publication of EP0418177B1 publication Critical patent/EP0418177B1/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
    • 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
    • D03C1/06—Double-lift dobbies, i.e. dobbies in which separate draw-knives or equivalent operate on alternate picks

Definitions

  • the present invention relates to dobbies for weaving machines and it relates more particularly to dobbies of the pulled balance type.
  • each of the heald frames of the loom is connected to an oscillating lever which carries a balance, each of the ends of which is provided with a coupling member produced in the form of an articulated draw hook.
  • Each pulling hook is selectively actuated by a traction member formed by a rigid knife with reciprocating movement, suitable for moving the balance and the corresponding heald frame as a function of the command received from the weaving program incorporated in the selection system, which comprises an actuation mechanism equipped with a program and associated with reading and transmission elements.
  • This system acts on the pulling hooks which are moved vertically so as either to come to cooperate with the traction knife, or on the contrary to escape the action of the latter.
  • the reference 1 designates one of the heald frames of the weaving machine, this frame being associated with springs 2 which tend to lower it; the frame 1 is connected by a cable 3 to an oscillating lever 4 which pivots at 5 on the fixed frame and which pivotally carries a balance 6.
  • the ends of the latter are equipped with coupling members 7 constituted by articulated arms 8 has at the end of which a profiled part 8 is provided to cooperate with a traction member 9.
  • the two traction members 9 associated with the scales 6 of the dobby are supported by two side plates 10 wedged on a central shaft shown diagrammatically at 11 and animated of an oscillating movement. It will be observed that the rear part of each part 8 is shaped to engage in a cavity formed in a corresponding fixed cross member 12 secured to the frame of the dobby, bearing on the flat surfaces of this cross member.
  • each traction member 9 comprises at each balance a slide 9 a movable axially in a bearing 9 b profiled to receive the part 8 of the coupling member 7 which corresponds to it ; when the slider 9 a is controlled by the program selection system, the coupling member 7 is made integral with the traction member 9.
  • Each slide 9 has associated therewith a transmission device which comprises a pusher 13 associated with an angle lever 14, the two levers 14 being controlled by 15 displaced rods vertically by reading needles 16 so as to cooperate with a knife 17 to reciprocating or escaping from it.
  • the base of the needles 16 is supported by a perforated paper 18 whose design or program corresponds to the desired weave.
  • the reading and transmission elements which, in combination with the program actuation mechanism provided for at a fixed station, control the coupling of the traction members with the coupling members of each balance, are carried by the swinging stages.
  • the program actuation mechanism of the selection system can be constituted either by a simple pedestrian wheel, or by a single set of electromagnets associated with pushers with alternating axial displacement.
  • fig. 1 is a cross section illustrating the structure of a dobby with drawn scales of conventional construction.
  • Fig. 2 is a similar section illustrating the arrangement of a dobby according to the invention.
  • Fig. 3 shows an alternative embodiment in which the selection system is no longer constituted by a pedestrian wheel as in FIG. 2, but by a set of electromagnets.
  • Fig. 4 illustrates another embodiment of the invention.
  • each lever 4 carries an oscillating balance 6 at the ends of which are mounted two coupling members 7 formed by pivoting pull hooks which cooperate with the traction members 9 ensuring control of the balance 6 considered.
  • these traction members are constituted by latches 20 mounted idly on pins 21 arranged between the beak of the hooks 7 and the pivot 22 of each of these on the end of the balance 6, in the manner described in the French patent N ° 87 00297 filed January 9, 1987 in the name of the Applicant.
  • the axes 21 on which the set of locks 20 of the different balances 6 of the dobby revolve are supported by the oscillating plates 10, it being observed that in FIG. 2 the balance 6 considered is shown in the high position for which its pivot 23 on the oscillating lever 4 coincides with the shaft 11 which drives the plates 10 of the oscillating movement, which promotes operation.
  • the plates 10 also support guides 24 intended to maintain the trajectory of the pulling hooks 7 when the heel of the latter is no longer in abutment against the fixed crosspieces 12, constituted by simple elements with square section or rectangular.
  • each lock 20 is coupled a transmission or pulling element 25 capable of acting against a spring 26 which tends to keep said lock engaged against the beak of the corresponding hook 7.
  • the two opposite tie rods 25 intersect at the inside of a central guide 27 to come to be articulated on reading elements formed by fingers 28, with an elbow profile in the example considered, mounted idly on two shafts 29 which are common to all the scales of the dobby and whose the ends are carried, in the manner described in French patent No. 86 07354/2 599 056 cited above, by the two oscillating plates 10, in the same way as the central guide 27 mentioned above.
  • the dobby selection system further includes an actuation mechanism program, consisting of a pedestrian wheel 30 suitably driven in rotation and whose arrangement corresponds to the weave of the fabric to be obtained.
  • one of the two bent fingers 28 of each balance 6 comes to place its actuating tail at the level of the pedestrian wheel 30. If at this moment it does not have any courtdonne 30a, the finger 28 is not actuated, so that the corresponding latch 20 remains engaged against the draw hook 7 conjugate which continues its oscillating movement. If instead the wheel 30 has a courtdonne 30 has at the tail of the finger 28, the latter pivots about the axis 29 by exerting axial traction on the tie rod 25 (in the case of the upper finger 28 in fig. 2); the latch 20 is eclipsed by tilting against its return spring 26, thereby releasing the hook 7 which will then no longer be driven with the plates 10.
  • the selection system comprises a single fixed housing 31 which contains a number of electromagnets 32 equal to that of the scales 6 of the dobby.
  • Each electromagnet 32 controls an articulated pallet 33 which is coupled to a pusher 34 with axial displacement, the free end of which is advantageously capped with a nozzle 35.
  • electro- magnets 32 are selectively controlled according to the armor program.
  • the force which the electromagnets 32 must exert to ensure the control of the dobby is minimal and is in fact limited to the resistant force exerted by each return spring 36, because the attraction of the pallet 33 intervenes while the pusher 34 is not subjected to any resistant force; this effort is exerted only when the pallet 33 is applied against the pole of the electromagnet 32, that is to say at the time of bonding which corresponds to the highest driving energy of the electromagnet .
  • such a selection system comprising a set of electromagnets which is mounted on a fixed station and which alone controls the traction members of the top and bottom of the dobby, is particularly suitable. well to the production of dobbies of the synchronized type, capable of operating in reverse for the unscrewing operations.
  • the traction members 9 are constituted by hooks 37 rigidly fixed on the tilting plates 10 and equipped with small actuation levers 38 which are articulated at 37 a on the hooks 37, being coupled to the tie rods 25 and receiving the action of return springs 39.
  • Each lever 38 is adapted to ensure the control of a coupling member 7 constituted by a pivotable latch 40 carried by the free end of an arm 40 articulated on one of the two pivots 22 of each balance 6.
  • a spring 40 b operates the elastic return of each latch 40 to the position of engagement with the spout of the traction hook 37 which corresponds to it.
  • the invention is capable of being implemented in the case where the mobile traction members 9 are formed, no longer by locks working under compression, but by slides of the type of those shown in FIG. 1, working in shear, or by tilting hooks, conventional working in bending.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Knitting Machines (AREA)

Claims (5)

  1. Doppelhub-Schaftmaschine für Webmaschinen der Bauart, bei der die an den beiden Enden jedes Balancehebels (6) gelagerten Kupplungsorgane (7) dazu bestimmt sind, unter der Kontrolle eines Wahl- bzw. Steuerungssystems, einen programmierten Betätigungsmechanismus (30, 31) umfassend, verbunden mit Lese- und Übertragungselementen (28-25), zusammenzuwirken mit den beweglichen Zugorganen (9), getragen von eine Pendelbewegung ausführenden Platinen (10),
    dadurch gekennzeichnet,
    daß die Lese- und Übertragungselemente (28-25) so auf den Pendelplatinen (10) angebracht sind, daß sie abwechselnd zusammenwirken mit einem einziehbaren Anschlag (30a, 34-35) des ortsfesten Betätigungsmechanismus (30, 31).
  2. Schaftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Übertragungselemente gebildet werden durch entgegengesetzte und gekreuzte Zugstäbe (25), die die Zugorgane (9) mit zwei beweglichen Fingern (28) verbinden, angebracht auf den Pendelplatinen (10), beidseitig der durch die Pendelachse (11) der genannten Platinen verlaufenden Symetrieebene der vorerwähnten Organe.
  3. Schaftmaschine nach einem beliebigen der Ansprüche 1 und 2, dadurch gekennzeichnet, daß der einziehbare Anschlag des Wahl-bzw. Steuerungssystems gebildet wird durch eine der Warzen (30a) eines sich drehenden Rads (30).
  4. Schaftmaschine nach einem beliebigen der Ansprüche 1 und 2, dadurch gekennzeichnet, daß der bewegliche Anschlag des Steuerungssystems gebildet wird durch das Ende (35) eines Wechselbewegungs-Drückers (34), gekuppelt mit dem beweglichen Anker (33) eines Elektromagneten (32).
  5. Schaftmaschine nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in der oberen Stellung der Drehzapfen (23), der die Kupplung jedes Balancehebels (6) mit dem entsprechenden Schwinghebel (4) gewährleistet, zusammenfällt mit der Achse der Welle (11), die den Platinen (10) ihre Pendelbewegung verleiht.
EP90420403A 1989-09-14 1990-09-13 Doppelhub-Schaftmaschine mit gezogenen Balancehebeln für Webmaschinen Expired - Lifetime EP0418177B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8912303A FR2651803B1 (fr) 1989-09-14 1989-09-14 Ratiere a double leve du type a balances tirees pour machines a tisser.
FR8912303 1989-09-14

Publications (2)

Publication Number Publication Date
EP0418177A1 EP0418177A1 (de) 1991-03-20
EP0418177B1 true EP0418177B1 (de) 1993-12-22

Family

ID=9385656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420403A Expired - Lifetime EP0418177B1 (de) 1989-09-14 1990-09-13 Doppelhub-Schaftmaschine mit gezogenen Balancehebeln für Webmaschinen

Country Status (8)

Country Link
US (1) US5070911A (de)
EP (1) EP0418177B1 (de)
JP (1) JP2935438B2 (de)
KR (1) KR0139102B1 (de)
DE (1) DE69005401T2 (de)
ES (1) ES2047891T3 (de)
FR (1) FR2651803B1 (de)
RU (1) RU1813130C (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2679263B1 (fr) * 1991-07-15 1994-01-14 Staubli Ets Perfectionnements aux ratieres a double leve du type hattersley pour machines a tisser.
JP3425983B2 (ja) * 1992-12-25 2003-07-14 株式会社山田ドビー ドビー
EP0745712A1 (de) * 1995-05-29 1996-12-04 Stoffel & Sohn AG Nockensteuerung für eine Hochleistungs-Federrückzug-Schaftmaschine
DE19651190C1 (de) * 1996-12-10 1998-06-10 Mayer Textilmaschf Elektromagnetisch arbeitende Jacquard-Steuervorrichtung
FR2849451B1 (fr) * 2002-12-26 2005-02-11 Staubli Sa Ets Ratiere et metier a tisser equipe d'une telle ratiere
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

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH470507A (de) * 1967-03-03 1969-03-31 Staeubli Geb & Co Fachbildungsvorrichtung für Webstühle
JPS6017859B2 (ja) * 1980-02-07 1985-05-07 株式会社山田ドビ− 消極複動ドビ−機
US4474221A (en) * 1982-09-16 1984-10-02 Yamada Dobby Co., Ltd. Positive dobby machine
FR2543172B1 (fr) * 1983-03-22 1985-10-25 Staubli Sa Ets Perfectionnements aux ratieres a balances pour metiers a tisser
FR2599056B1 (fr) * 1986-05-20 1988-08-19 Staubli Sa Ets Perfectionnements aux mecaniques d'armure pour la formation de la foule sur les machines a tisser
FR2609476B1 (fr) * 1987-01-09 1990-12-07 Staubli Sa Ets Perfectionnements aux ratieres negatives du type a balances oscillantes
JPS6414338A (en) * 1987-06-30 1989-01-18 Yamada Dobby Co Ltd Control apparatus of dobby machine

Also Published As

Publication number Publication date
JP2935438B2 (ja) 1999-08-16
KR910006532A (ko) 1991-04-29
EP0418177A1 (de) 1991-03-20
FR2651803A1 (fr) 1991-03-15
RU1813130C (ru) 1993-04-30
JPH03227425A (ja) 1991-10-08
ES2047891T3 (es) 1994-03-01
FR2651803B1 (fr) 1991-11-08
US5070911A (en) 1991-12-10
KR0139102B1 (ko) 1998-05-15
DE69005401T2 (de) 1994-05-26
DE69005401D1 (de) 1994-02-03

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