EP0627512B1 - Damping device for looms - Google Patents

Damping device for looms Download PDF

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Publication number
EP0627512B1
EP0627512B1 EP94420160A EP94420160A EP0627512B1 EP 0627512 B1 EP0627512 B1 EP 0627512B1 EP 94420160 A EP94420160 A EP 94420160A EP 94420160 A EP94420160 A EP 94420160A EP 0627512 B1 EP0627512 B1 EP 0627512B1
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EP
European Patent Office
Prior art keywords
oscillating
elastic means
looms
damping device
movement
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
EP94420160A
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German (de)
French (fr)
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EP0627512B2 (en
EP0627512A1 (en
Inventor
Jean-Paul Froment
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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 EP0627512A1 publication Critical patent/EP0627512A1/en
Application granted granted Critical
Publication of EP0627512B1 publication Critical patent/EP0627512B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C5/00—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices
    • 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
    • D03C1/144—Features common to dobbies of different types linking to the heald frame
    • 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
    • Y10T74/18—Mechanical movements
    • Y10T74/18888—Reciprocating to or from oscillating
    • Y10T74/1892—Lever and slide
    • Y10T74/18944—Link connections

Definitions

  • the present invention relates to a damping system intended to be associated with a weaving machine mechanism of the kind comprising, for the selective control of a thread or a group of threads, at least one member which is positively driven by a desmodromic oscillating movement.
  • the devices for training the crowd of weaving looms are produced in the form of dobbies or so-called Jacquard machines comprising heald frames and claw frames respectively driven by positive type operating systems.
  • These organs provided with a back-and-forth movement, have large masses so that their displacement naturally requires a great deal of energy consumption and generate high kinetic energy. Under these conditions, when the movement is reversed, significant forces occur which cause excessive wear and create noises harmful to the environment; these very high instantaneous efforts (“peaks”) obviously have an impact on energy consumption.
  • a mechanism for controlling the reciprocating movement of a group of threads in a weaving machine is known, for example from document EP-A-0 133 966.
  • the improvements which are the subject of the present invention aim to remedy these drawbacks and to allow the general damping of the inertial forces of the moving masses of a weaving machine mechanism.
  • each oscillating member is associated with elastic means which act in an antagonistic manner on said member so as to tend to return the latter to its substantially median position.
  • the single figure in this drawing is a simplified general view of a dobby comprising a damping system produced according to the invention.
  • the drawing illustrates the application of the invention to a mechanism for a weaving machine constituted by a dobby.
  • a known manner it comprises a control unit 1 that prints to an arm 1 has a reciprocating oscillating movement.
  • the free end of the arm 1 a is articulated to a connecting rod 2 which is pivotally connected to the end of the first branch 3 a of a square lever 3 mounted to pivot relative to a horizontal fixed axis 4.
  • a connecting bar 5 which attacks the branch 3 ' a of another lever 3' identical to that 3.
  • the connecting bar 5 comprises a yoke 5 a which cooperates with a link 12 oscillating about a fixed axis 13.
  • a plate in the form of a double T 14 is articulated to the link 12.
  • a series of springs 15, 15 ' which are further hung on a lug 16, respectively 16'.
  • Each of the latter cooperates with an adjustment screw 17, 17 'rotating freely in a fixed ear 18, 18'.
  • the series of springs 15 and 15 ′ exert an opposing restoring force which tends to bring the rod, and consequently the rod 5 and the frame 7, in a substantially middle position.
  • the springs can be tensioned more so as to increase their reaction.
  • a damping system has thus been produced which in particular reduces the peaks of the forces caused by the moving masses at the time of the reversals of direction. In this way, it is possible to produce resiliently balanced oscillating members, thus avoiding significant efforts during reversals of the direction of movement and ultimately reducing the energy consumed.
  • the system according to the invention can be applied to any oscillating member of a mechanism for a textile machine, such as for example the leaf or comb of a weaving loom which cooperates with the warp and weft threads. to clamp the picks against each other, or the weft pass lance of a loom without shuttle.
  • a mechanism for a textile machine such as for example the leaf or comb of a weaving loom which cooperates with the warp and weft threads. to clamp the picks against each other, or the weft pass lance of a loom without shuttle.
  • coil springs 15 and 15 ′ can be replaced by a flat profile blade, one end of which is fixed to one of the branches of at least one of the levers 3 while the other cooperates with an adjustment device linked to the fixed structure.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)

Description

La présente invention se réfère à un système amortisseur destiné à être associé à un mécanisme de machine à tisser du genre comprenant, pour la commande sélective d'un fil ou d'un groupe de fils, au moins un organe qui est positivement animé d'un mouvement oscillant desmodromique.The present invention relates to a damping system intended to be associated with a weaving machine mechanism of the kind comprising, for the selective control of a thread or a group of threads, at least one member which is positively driven by a desmodromic oscillating movement.

On sait que les dispositifs de formation de la foule des métiers à tisser sont réalisés sous la forme de ratières ou de mécaniques dites Jacquard comportant respectivement des cadres de lisses et des cadres de griffes entraînés au moyen de systèmes de manoeuvre de type positif. Ces organes, pourvus d'un mouvement de va-et-vient, ont des masses importantes de sorte que leur déplacement nécessitent bien entendu une grande consommation d'énergie et engendrent une énergie cinétique élevée. Dans ces conditions, au moment de l'inversion du mouvement, il se produit des efforts importants qui entrainent des usures excessives et créent des bruits néfastes à l'environnement ; ces efforts instantanés ("pics") très élevés se répercutent évidemment sur la consommation d'énergie.It is known that the devices for training the crowd of weaving looms are produced in the form of dobbies or so-called Jacquard machines comprising heald frames and claw frames respectively driven by positive type operating systems. These organs, provided with a back-and-forth movement, have large masses so that their displacement naturally requires a great deal of energy consumption and generate high kinetic energy. Under these conditions, when the movement is reversed, significant forces occur which cause excessive wear and create noises harmful to the environment; these very high instantaneous efforts (“peaks”) obviously have an impact on energy consumption.

Un mécanisme de commande du mouvement alternatif d'un groupe de fils dans une machine à tisser est connue, par exemple du document EP-A-0 133 966.A mechanism for controlling the reciprocating movement of a group of threads in a weaving machine is known, for example from document EP-A-0 133 966.

Les perfectionnements qui font l'objet de la présente invention visent à remédier à ces inconvénients et à permettre l'amortissement général des forces d'inertie des masses en mouvement d'un mécanisme de machine à tisser.The improvements which are the subject of the present invention aim to remedy these drawbacks and to allow the general damping of the inertial forces of the moving masses of a weaving machine mechanism.

Le mécanisme suivant l'invention est défini à la revendication 1. D'autres caractéristiques de l'invention sont définies dans les revendications 2 et 3.The mechanism according to the invention is defined in claim 1. Other characteristics of the invention are defined in claims 2 and 3.

En fait suivant l'invention, chaque organe oscillant est associé à des moyens élastiques qui agissent de manière antagoniste sur ledit organe de façon à tendre à ramener celui-ci à sa position sensiblement médiane.In fact according to the invention, each oscillating member is associated with elastic means which act in an antagonistic manner on said member so as to tend to return the latter to its substantially median position.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:

La figure unique de ce dessin est une vue générale simplifiée d'une ratière comportant un système d'amortissement réalisé suivant l'invention.The single figure in this drawing is a simplified general view of a dobby comprising a damping system produced according to the invention.

On a illustré sur le dessin l'application de l'invention à un mécanisme pour machine à tisser constitué par une ratière.The drawing illustrates the application of the invention to a mechanism for a weaving machine constituted by a dobby.

A la manière connue, celle-ci comporte un ensemble de commande 1 qui imprime à un bras 1a un mouvement oscillant alternatif. L'extrémité libre du bras 1a est articulée à une bielle 2 qui est reliée à pivotement à l'extrémité de la première branche 3a d'un levier en équerre 3 monté pivotant par rapport à un axe fixe horizontal 4. A cette même extrémité de la branche 3a du levier 3 est articulée une barre de liaison 5 qui attaque la branche 3'a d'un autre levier 3' identique à celui 3. Les branches horizontales 3b, 3'b des leviers en équerre 3 et 3' attaquent chacune une tige verticale 6, 6' connectée aux deux côtés d'un cadre de lisse 7, à la façon bien connue dans la pratique, de telle sorte qu'il n'est pas nécessaire de décrire cet agencement de manière plus détaillée.A known manner, it comprises a control unit 1 that prints to an arm 1 has a reciprocating oscillating movement. The free end of the arm 1 a is articulated to a connecting rod 2 which is pivotally connected to the end of the first branch 3 a of a square lever 3 mounted to pivot relative to a horizontal fixed axis 4. At this same end of the branch 3 a of the lever 3 is articulated a connecting bar 5 which attacks the branch 3 ' a of another lever 3' identical to that 3. The horizontal branches 3 b , 3 ' b of the levers at right angles 3 and 3 'each attack a vertical rod 6, 6' connected to the two sides of a heald frame 7, in the manner well known in practice, so that it is not necessary to describe this arrangement more detailed.

On rappellera que le basculement du bras 1a entraîne le déplacement alternatif vertical du cadre 7.It will be recalled that the tilting of the arm 1 a causes the vertical reciprocation of the frame 7.

Conformément à l'invention, la barre de liaison 5 comporte une chape 5a qui coopère avec une biellette 12 oscillant autour d'un axe fixe 13. Une plaquette en forme de double T 14 est articulée à la biellette 12. A chacune des parties transversales de cette dernière est accrochée une série de ressorts 15, 15' qui sont en outre accrochés à une patte 16, respectivement 16' . Chacune de ces dernières coopère avec une vis de réglage 17, 17' tournant librement dans une oreille fixe 18, 18' .According to the invention, the connecting bar 5 comprises a yoke 5 a which cooperates with a link 12 oscillating about a fixed axis 13. A plate in the form of a double T 14 is articulated to the link 12. At each of the parts transverse of the latter is hung a series of springs 15, 15 'which are further hung on a lug 16, respectively 16'. Each of the latter cooperates with an adjustment screw 17, 17 'rotating freely in a fixed ear 18, 18'.

Si les pattes 16, 16' se trouvent à égale distance de l'axe 13, les séries de ressorts 15 et 15' exercent une force de rappel antagoniste qui tend à ramener la biellette, et par conséquent la tige 5 et le cadre 7, dans une position sensiblement médiane.If the legs 16, 16 ′ are equidistant from the axis 13, the series of springs 15 and 15 ′ exert an opposing restoring force which tends to bring the rod, and consequently the rod 5 and the frame 7, in a substantially middle position.

On comprend aisément que le déplacement de la barre 5 dans un sens ou dans l'autre tend une série de ressorts et détend l'autre.It is easily understood that the displacement of the bar 5 in one direction or the other tightens a series of springs and relaxes the other.

Si de manière symétrique, l'on déplace les pattes 16, 16' en direction opposée de la biellette 12, on peut tendre davantage les ressorts de manière à augmenter leur réaction. On peut aussi tendre plus les ressorts 15 associés à la patte 16 que ceux 15' associés à la patte 16' ou inversement, de telle manière que la barre de liaison 5 soit ramenée dans une position quelque peu différente de sa position d'équilibre statique et que l'intensité des forces de rappel soit différente pour l'un et l'autre sens de déplacement.If the legs 16, 16 ′ are moved symmetrically in the opposite direction from the link 12, the springs can be tensioned more so as to increase their reaction. One can also tension the springs 15 associated with the lug 16 more than those 15 'associated with the lug 16' or vice versa, in such a way that the connecting bar 5 is brought back to a position somewhat different from its static equilibrium position. and that the intensity of the restoring forces is different for either direction of movement.

On a ainsi réalisé un système d'amortissement qui diminue en particulier les pics des efforts provoqués par les masses en déplacement au moment des inversions de sens. De cette manière, on peut réaliser des organes oscillants élastiquement équilibrés, évitant ainsi des efforts importants lors des inversions de sens de déplacement et diminuant finalement l'énergie consommée.A damping system has thus been produced which in particular reduces the peaks of the forces caused by the moving masses at the time of the reversals of direction. In this way, it is possible to produce resiliently balanced oscillating members, thus avoiding significant efforts during reversals of the direction of movement and ultimately reducing the energy consumed.

Il va de soi que le système suivant l'invention peut être appliqué à tout organe oscillant d'un mécanisme pour machine textile, tel que par exemple le battant ou peigne d'un métier à tisser qui coopère avec les fils de chaîne et de trame pour serrer les duites les unes contre les autres, ou la lance passe-trame d'un métier sans navette.It goes without saying that the system according to the invention can be applied to any oscillating member of a mechanism for a textile machine, such as for example the leaf or comb of a weaving loom which cooperates with the warp and weft threads. to clamp the picks against each other, or the weft pass lance of a loom without shuttle.

Par ailleurs on comprend que les ressorts hélicoïdaux 15 et 15' sont susceptibles d'être remplacés par une lame à profil plat dont une extrémité est fixée à l'une des branches de l'un au moins des leviers 3 tandis que l'autre coopère avec un dispositif de réglage lié à la stucture fixe.Furthermore, it is understood that the coil springs 15 and 15 ′ can be replaced by a flat profile blade, one end of which is fixed to one of the branches of at least one of the levers 3 while the other cooperates with an adjustment device linked to the fixed structure.

Claims (3)

  1. Mechanism for weaving machine, of the type comprising, for the alternative control of a yarn or a group of yarns, at least one member (7) which is positively animated by a desmodromic oscillating movement, characterized in that the oscillating member (7) is associated with elastic means (15, 15') which act in antagonistic manner on said member (7) so as to tend to return the latter to a substantially median position.
  2. Mechanism according to Claim 1, characterized in that there are associated with the elastic means (15, 15') adjusting means (17, 17') arranged to allow the variation, on the one hand, of the intensity of the antagonistic return forces and, on the other hand, of the point of static equilibrium of the oscillating member.
  3. Mechanism according to either one of Claims 1 and 2, characterized in that the elastic means are in the form of two elastic assemblies (15, 15') arranged on either side of an element (12) connected thereto.
EP94420160A 1993-06-03 1994-06-03 Damping device for looms Expired - Lifetime EP0627512B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9306882 1993-06-03
FR9306882A FR2705972B1 (en) 1993-06-03 1993-06-03 Damping device for weaving machine.

Publications (3)

Publication Number Publication Date
EP0627512A1 EP0627512A1 (en) 1994-12-07
EP0627512B1 true EP0627512B1 (en) 1996-12-11
EP0627512B2 EP0627512B2 (en) 2000-09-20

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ID=9447896

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Application Number Title Priority Date Filing Date
EP94420160A Expired - Lifetime EP0627512B2 (en) 1993-06-03 1994-06-03 Damping device for looms

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US (1) US5462093A (en)
EP (1) EP0627512B2 (en)
JP (1) JP3538451B2 (en)
DE (1) DE69401095D1 (en)
FR (1) FR2705972B1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59409940D1 (en) * 1994-09-06 2001-12-13 Sulzer Textil Ag Rueti Method and device for balancing power on a machine
FR2734610B1 (en) * 1995-05-24 1997-07-04 Staubli Sa Ets ADJUSTABLE CLIP FOR THE PIVOTING ASSEMBLY OF THE OSCILLATING ARMS OF AN ARMOR MECHANICS WITH THE DRIVING RODS OF THE DRAWING SYSTEM
EP0870856A1 (en) * 1997-04-09 1998-10-14 Sulzer Rüti Ag Drive for heald frame and loom with a drive for heald frame
DE10260075B4 (en) * 2002-12-19 2007-02-01 Groz-Beckert Kg Shaft frame and weaving shank for looms
DE10341629B4 (en) * 2003-09-10 2007-04-12 Groz-Beckert Kg Low vibration tray system
BE1016217A5 (en) * 2004-09-28 2006-05-02 Wiele Michel Van De Nv GAAPING DEVICE AND WEAVING MACHINE FITTED WITH SUCH GAAPING DEVICE.
WO2008141657A1 (en) * 2007-05-18 2008-11-27 Sultex Ag Warp shed-forming device
CN101250785B (en) * 2008-02-02 2011-05-11 韩通 One-way boosting buffer mechanism for electronic jacquard opening mechanism
JP5593833B2 (en) * 2010-05-24 2014-09-24 株式会社豊田自動織機 Electronic opening device
CN104153109A (en) * 2014-07-22 2014-11-19 扬中市金德纺织机械设备厂 Connecting rod assembly of high-speed loom
CN105908320B (en) * 2016-06-12 2017-10-20 苏州易利耐机电科技有限公司 A kind of heald frame static(al), balance of shaking force mechanism
CN106868680B (en) * 2017-04-07 2018-08-17 杨国惠 A kind of tapping machine balancing heald frame static(al), inertia force

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CH113529A (en) * 1924-12-22 1926-01-16 Charles Bilhartz Loom for weaving a plurality of ribbons at the same time.
CS154950B1 (en) * 1971-07-02 1974-04-30
CH558435A (en) * 1972-11-17 1975-01-31 Grob & Co Ag Loom shaft drive mechanism - has a shock absorber located in the drive shaft driven by eccentrics
FR2476696A1 (en) * 1980-02-21 1981-08-28 Moessinger Albert LOOM
FR2505883A1 (en) * 1981-05-12 1982-11-19 Alsacienne Constr Meca DEVICE FOR CONTROLLING THE HOLDER FRAMES FOR WEAVING MACHINES
IT8322543A0 (en) * 1983-08-12 1983-08-12 Fimtessile LINKAGE FOR CONTROL OF HEDDLER FRAMES IN NEGATIVE WEAVING MACHINES.
CH679869A5 (en) * 1988-10-04 1992-04-30 Sulzer Ag
GB8920361D0 (en) * 1989-09-08 1989-10-25 Jaguar Cars Valve mechanisms
JP2680208B2 (en) † 1991-07-17 1997-11-19 富士通株式会社 Memory access control device
US5195385A (en) * 1991-10-28 1993-03-23 Jerome A. Johnson Free ranging bi-directional hydraulic dumping mechanism

Also Published As

Publication number Publication date
EP0627512B2 (en) 2000-09-20
FR2705972B1 (en) 1995-07-21
DE69401095D1 (en) 1997-01-23
EP0627512A1 (en) 1994-12-07
US5462093A (en) 1995-10-31
JPH07133546A (en) 1995-05-23
FR2705972A1 (en) 1994-12-09
JP3538451B2 (en) 2004-06-14

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