EP0681042B1 - Driving system for reciprocating crank driven knife boxes - Google Patents

Driving system for reciprocating crank driven knife boxes Download PDF

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Publication number
EP0681042B1
EP0681042B1 EP95420119A EP95420119A EP0681042B1 EP 0681042 B1 EP0681042 B1 EP 0681042B1 EP 95420119 A EP95420119 A EP 95420119A EP 95420119 A EP95420119 A EP 95420119A EP 0681042 B1 EP0681042 B1 EP 0681042B1
Authority
EP
European Patent Office
Prior art keywords
rods
mechanism according
shaft
boxes
frame
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
EP95420119A
Other languages
German (de)
French (fr)
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EP0681042A1 (en
Inventor
Dario Bassi
Damien Bouchet
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 Lyon SA
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Staeubli Lyon SA
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Application filed by Staeubli Lyon SA filed Critical Staeubli Lyon SA
Publication of EP0681042A1 publication Critical patent/EP0681042A1/en
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/32—Jacquard driving mechanisms
    • D03C3/36—Griffe operating mechanisms
    • 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
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18232—Crank and lever

Definitions

  • the present invention relates to motion control mechanisms back and forth of the claw frames of an armor mechanic.
  • the improvements which are the subject of the present invention aim to remedy these drawbacks and allow connections to be made between the mechanical control shaft and the connecting rods associated with claw frames that require only limited lubrication.
  • crank arms offset angularly and of which the crankpins are located at a certain distance from the geometric axis of the shaft, two short connecting rods and two long connecting rods being articulated to said crankpins and respectively to the lower claw frames and superior.
  • the articulation of the connecting rods on the crankpins can be made by means of sealed ball bearings which do not require no lubrication and can therefore work in the open air.
  • the single figure of the drawing is a schematic side view of one of the ends of the control shaft of an armor mechanism comprising a mechanism for controlling the reciprocating movement of the claw frames in accordance with invention.
  • the frame 1 of a mechanical of armor comprising two claw frames.
  • the lower claw frame has been referenced 2 and reference 3 has been assigned to the framework of upper claws.
  • crank arms 5, 6, 7 and 8 On each end 4 a of the shaft 4 for controlling the mechanics, which in the usual way is driven by the shaft of the corresponding loom, were set four crank arms 5, 6, 7 and 8 of the same length each comprising at their free end a crank pin 5 a , 6 a , 7 a , 8 a .
  • the four crank arms 5, 6, 7 and 8 are the same length, a leveled crowd is obtained.
  • an oblique crowd is sought and under these conditions the arms 5, 6, 7 and 8 are of different lengths, adapted to the desired average obliquities.
  • crank arms 5 - 8 are angularly offset in an appropriate manner so that the crank pins located on the same side, that is to say those 5 a and 6 a, are associated with one of the ends of short connecting rods 9, 10 whose other ends are articulated to the lower claw frame 2.
  • the crank pins 7 a and 8 a opposite those 5 a , 6 a are articulated at one end of the long connecting rods 11, 12 whose ends opposite are articulated to the upper claw frame 3.
  • connecting rods 9, 10 are referenced 13, 14 while those of connecting rods 11, 12 are referenced 15 and 16.
  • the two claw frames 2, 3 each have on their two opposite ends two series of holes 20 a , 20 b respectively 30 a , 30 b distributed over a circumference whose radius is equal to the length of the connecting rods 9, 10 respectively 11, 12. It is observed that the two series of holes of each frame of claws are arranged on either side of the median axis X, X 'of the frame considered.
  • the axes 13, 14, respectively 15, 16 are engaged in holes of the two frames of claws, chosen so that they move back and forth parallel to each other for the realization of a leveled crowd.
  • you want to create an oblique crowd just change the position axes in the series of holes in the claw frames to make them take the chosen oblique position allowing the realization of the crowd oblique desired.
  • Both the crank arms of the crank arms 5 - 8 and the pins 13 - 16 are articulated to the connecting rods 9 - 12 by means of sealed ball bearings or the like, so that the assembly considered is simple, economical and easy to maintain, therefore inexpensive.
  • the settings which exist on the known mechanisms for controlling claw frames at the level of the cams and follower rollers, which are complex to realize are simply transferred according to the present invention to level of the claw frames from where they are particularly easy to carry out.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Transmission Devices (AREA)
  • Looms (AREA)
  • Supports For Plants (AREA)
  • Transplanting Machines (AREA)
  • Harvester Elements (AREA)

Description

La présente invention se réfère aux mécanismes de commande du mouvement de va-et-vient des cadres de griffes d'une mécanique d'armures.The present invention relates to motion control mechanisms back and forth of the claw frames of an armor mechanic.

On sait qu'il existe des mécanismes du genre en question constitués par des jeux de cames complémentaires calés sur les deux extrémités dépassant au-delà du châssis de ladite mécanique d'un arbre qui traverse le châssis. Chaque came coopère avec un galet suiveur monté sur un basculeur qui est en liaison avec des bielles reliées aux deux cadres de griffes. Un tel mécanisme a été décrit par exemple dans le document FRA-2.17.189 de la présente Demanderesse déposé en date du 10 mars 1994.We know that there are mechanisms of the kind in question constituted by complementary sets of cams fixed on the two ends protruding beyond the chassis of said mechanical a shaft which crosses the frame. Each cam cooperates with a follower roller mounted on a rocker which is in connection with connecting rods connected to the two frames of claws. Such a mechanism has been described for example in the document FRA-2.17.189 of this Applicant filed on March 10 1994.

Un tel mécanisme, qui peut être placé en bas du châssis ou en haut de ce dernier, entraíne des efforts considérables entre la périphérie des cames et les galets suiveurs, de telle sorte qu'il est absolument nécessaire de prévoir un graissage important. Une excellente solution consiste à placer les cames dans un bain d'huile. Mais ceci entraíne la présence de carters, de joints d'étanchéité, etc... de telle sorte que l'ensemble est relativement complexe et par conséquent coûteux.Such a mechanism, which can be placed at the bottom of the chassis or at the top of it last, entails considerable efforts between the periphery of cams and follower rollers, so that it is absolutely necessary to plan an important lubrication. An excellent solution is place the cams in an oil bath. But this leads to the presence casings, gaskets, etc. so that the whole is relatively complex and therefore expensive.

Les perfectionnements qui font l'objet de la présente invention visent à remédier à ces inconvénients et à permettre la réalisation de liaisons entre l'arbre de commande de la mécanique et les bielles associées aux cadres de griffes qui ne nécessitent qu'un graissage limité.The improvements which are the subject of the present invention aim to remedy these drawbacks and allow connections to be made between the mechanical control shaft and the connecting rods associated with claw frames that require only limited lubrication.

A cet effet, sur chaque extrémité de l'arbre qui dépasse hors du châssis, sont calés quatre bras de manivelle décalés angulairement et dont les manetons sont situés à une certaine distance de l'axe géométrique de l'arbre, deux bielles courtes et deux bielles longues étant articulées auxdits manetons et respectivement aux cadres de griffes inférieur et supérieur.For this purpose, on each end of the shaft which protrudes outside the chassis, are set four crank arms offset angularly and of which the crankpins are located at a certain distance from the geometric axis of the shaft, two short connecting rods and two long connecting rods being articulated to said crankpins and respectively to the lower claw frames and superior.

Dans ces conditions, l'articulation des bielles sur les manetons peut être faite au moyen de roulements à billes étanches qui ne nécessitent pas de graissage et peuvent par conséquent travailler à l'air libre.Under these conditions, the articulation of the connecting rods on the crankpins can be made by means of sealed ball bearings which do not require no lubrication and can therefore work in the open air.

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 :
   La figure unique du dessin est une vue schématique par côté d'une des extrémités de l'arbre de commande d'une mécanique d'armure comportant un mécanisme de commande du mouvement de va-et-vient des cadres de griffes conforme à l'invention.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:
The single figure of the drawing is a schematic side view of one of the ends of the control shaft of an armor mechanism comprising a mechanism for controlling the reciprocating movement of the claw frames in accordance with invention.

On a représenté schématiquement sur la figure le bâti 1 d'une mécanique d'armure comprenant deux cadres de griffes. Le cadre de griffes inférieur a été référencé 2 et la reférence 3 a été affectée au cadre de griffes supérieur.There is shown schematically in the figure the frame 1 of a mechanical of armor comprising two claw frames. The lower claw frame has been referenced 2 and reference 3 has been assigned to the framework of upper claws.

Sur chaque extrémité 4a de l'arbre 4 de commande de la mécanique, qui à la manière usuelle est entraíné par l'arbre du métier à tisser correspondant, ont été calés quatre bras de manivelle 5, 6, 7 et 8 de même longueur comportant chacun à leur extrémité libre un maneton 5a, 6a, 7a, 8a. Bien entendu, si les quatre bras de manivelle 5, 6, 7 et 8 sont de même longueur on obtient une foule nivelée. Dans le cas général on recherche une foule oblique et dans ces conditions les bras 5, 6, 7 et 8 sont de longueurs différentes, adaptées aux obliquités moyennes recherchées. Les bras de manivelle 5 - 8 sont décalés angulairement de manière appropriée afin que les manetons situés d'un même côté, c'est-à-dire ceux 5a et 6a soient associés à l'une des extrémités de bielles courtes 9, 10 dont les autres extrémités sont articulées au cadre de griffes inférieur 2. De manière semblable, les manetons 7a et 8a opposés à ceux 5a, 6a sont articulés à l'une des extrémités des bielles longues 11, 12 dont les extrémités opposées sont articulées au cadre de griffes supérieur 3.On each end 4 a of the shaft 4 for controlling the mechanics, which in the usual way is driven by the shaft of the corresponding loom, were set four crank arms 5, 6, 7 and 8 of the same length each comprising at their free end a crank pin 5 a , 6 a , 7 a , 8 a . Of course, if the four crank arms 5, 6, 7 and 8 are the same length, a leveled crowd is obtained. In the general case, an oblique crowd is sought and under these conditions the arms 5, 6, 7 and 8 are of different lengths, adapted to the desired average obliquities. The crank arms 5 - 8 are angularly offset in an appropriate manner so that the crank pins located on the same side, that is to say those 5 a and 6 a, are associated with one of the ends of short connecting rods 9, 10 whose other ends are articulated to the lower claw frame 2. Similarly, the crank pins 7 a and 8 a opposite those 5 a , 6 a are articulated at one end of the long connecting rods 11, 12 whose ends opposite are articulated to the upper claw frame 3.

Les articulations des quatre bielles aux deux cadres s'effectuent par l'intermédiaire d'un axe monté tournant dans des roulements à billes associés aux extrémités correspondantes desdites bielles. Les axes des bielles 9, 10 sont référencés 13, 14 tandis que ceux des bielles 11, 12 sont référencés 15 et 16.The articulations of the four connecting rods to the two frames are made by by means of a shaft mounted rotating in ball bearings associated with the corresponding ends of said connecting rods. The axes of connecting rods 9, 10 are referenced 13, 14 while those of connecting rods 11, 12 are referenced 15 and 16.

Conformément à l'invention, les deux cadres de griffes 2, 3 comportent chacun sur leurs deux extrémités opposées deux séries de trous 20a, 20b respectivement 30a, 30b répartis sur une circonférence dont le rayon est égal à la longueur des bielles 9, 10 respectivement 11, 12. On observe que les deux séries de trous de chaque cadre de griffes sont disposées de part et d'autre de l'axe médian X, X' du cadre considéré.According to the invention, the two claw frames 2, 3 each have on their two opposite ends two series of holes 20 a , 20 b respectively 30 a , 30 b distributed over a circumference whose radius is equal to the length of the connecting rods 9, 10 respectively 11, 12. It is observed that the two series of holes of each frame of claws are arranged on either side of the median axis X, X 'of the frame considered.

Dans l'illustration représentée sur la figure unique, les axes 13, 14, respectivement 15, 16 sont engagés dans des trous des deux cadres de griffes, choisis de manière que ces derniers se déplacent en va-et-vient parallèlement l'un à l'autre pour la réalisation d'une foule nivelée. Si l'on désire réaliser une foule oblique, il suffit de changer la position des axes dans les séries de trous des cadres de griffes pour leur faire prendre la position oblique choisie permettant la réalisation de la foule oblique désirée.In the illustration shown in the single figure, the axes 13, 14, respectively 15, 16 are engaged in holes of the two frames of claws, chosen so that they move back and forth parallel to each other for the realization of a leveled crowd. Yes you want to create an oblique crowd, just change the position axes in the series of holes in the claw frames to make them take the chosen oblique position allowing the realization of the crowd oblique desired.

Aussi bien les manetons des bras de manivelle 5 - 8 que les axes 13 - 16 sont articulés aux bielles 9 - 12 au moyen de roulements à billes étanches ou analogues, de sorte que le montage considéré est simple, économique et d'un entretien facile, donc peu coûteux. En outre, les réglages qui existent sur les mécanismes connus de commande des cadres de griffe au niveau des cames et des galets suiveurs, et qui sont complexes à réaliser sont tout simplement reportés selon la présente invention au niveau des cadres de griffes d'où ils sont particulièrement aisés à effectuer.Both the crank arms of the crank arms 5 - 8 and the pins 13 - 16 are articulated to the connecting rods 9 - 12 by means of sealed ball bearings or the like, so that the assembly considered is simple, economical and easy to maintain, therefore inexpensive. In addition, the settings which exist on the known mechanisms for controlling claw frames at the level of the cams and follower rollers, which are complex to realize are simply transferred according to the present invention to level of the claw frames from where they are particularly easy to carry out.

Claims (6)

  1. A mechanism for controlling the back-and-forth movement of the knife boxes (2, 3) of a loom dobby of the type in which the control of these boxes is in the form of connecting-rods actuated from the two ends (4a) extending beyond the frame (1) of the mechanism (4) of a shaft which passes through this frame, characterised in that on each end (4a) of the shaft (4) which extends beyond the frame (1) there are fastened four crank arms (5-8) offset angularly, the crank pins (5a-8a) of which are located at a certain distance from the geometric axis of the shaft (4), two short connecting-rods (9, 10) and two long connecting-rods (11, 12) being articulated to the corresponding crank pins (5a-8a) and respectively to the lower (2) and upper (3) knife boxes.
  2. A mechanism according to Claim 1, characterised in that each knife box (2, 3) is provided with two series of holes (20a, 20b-30a, 30b) relative to which the corresponding connecting-rods (9-12) are articulated, in order to make it possible to obtain either a levelled shed or a plurality of oblique sheds.
  3. A mechanism according to Claim 2, characterised in that the series of holes (20a, 20b - 30a, 30b) are located on circumferences located on either side of the median axis (X, X') of the mechanism and of radii corresponding to those of the connecting-rods (9, 10) respectively (11, 12).
  4. A mechanism according to Claim 1, characterised in that the ends of the connecting-rods (9-12) are articulated firstly to the crank pins (5a-8a) and secondly to the knife boxes (2-3) by means of roller bearings or the like.
  5. A mechanism according to Claim 1, characterised in that the crank arms (5-8) are of the same length.
  6. A mechanism according to Claim 1, characterised in that the crank arms (5-8) are of different lengths.
EP95420119A 1994-05-05 1995-05-03 Driving system for reciprocating crank driven knife boxes Expired - Lifetime EP0681042B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9405768A FR2720414B1 (en) 1994-05-05 1994-05-05 Control mechanism for the reciprocating movement of claw frames with rod-crank systems.
FR9405768 1994-05-05

Publications (2)

Publication Number Publication Date
EP0681042A1 EP0681042A1 (en) 1995-11-08
EP0681042B1 true EP0681042B1 (en) 1998-07-08

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Application Number Title Priority Date Filing Date
EP95420119A Expired - Lifetime EP0681042B1 (en) 1994-05-05 1995-05-03 Driving system for reciprocating crank driven knife boxes

Country Status (6)

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US (1) US5570724A (en)
EP (1) EP0681042B1 (en)
JP (1) JP3545831B2 (en)
DE (1) DE69503311T2 (en)
ES (1) ES2119342T3 (en)
FR (1) FR2720414B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2854642B1 (en) * 2003-05-06 2005-07-08 Staubli Lyon CROWN FORMING DEVICE AND JACQUARD TYPE WEAVING EQUIPPED WITH SUCH A DEVICE
CN101831743B (en) * 2010-05-05 2011-08-31 汪建兴 Transmission mechanism for griffe of jacquard

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2717189A1 (en) * 1994-03-10 1995-09-15 Staubli Verdol Back and forth movement control mechanism of the claw frames of an armor mechanic.

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR605701A (en) * 1924-11-11 1926-06-01 Rueti Ag Maschf Double stroke jacquard machine
DE899929C (en) * 1951-12-08 1953-12-17 Pieron Handelsgesellschaft Oblique jacquard machine
CH402759A (en) * 1962-12-15 1965-11-15 Brevitex Ets Exploit Dobby especially suitable for fast looms
GB986770A (en) * 1963-01-26 1965-03-24 Samuel Dracup & Sons Ltd Improvements in or relating to jacquard mechanisms
CH433139A (en) * 1963-07-10 1967-03-31 Kenk Erhard Double lifting jacquard machine
FR1389303A (en) * 1964-04-13 1965-02-12 Double lift jacquard
FR1473435A (en) * 1966-03-09 1967-03-17 Grosse Webereimaschinen Gmbh Pitch forming device for double-lift jacquard machines
GB2047755B (en) * 1979-04-24 1983-03-30 Bonas Machine Co Loom heald control means
BE1004308A3 (en) * 1989-07-17 1992-10-27 Wiele Michel Van De Nv DRIVE FOR KNIVES GRIDS OF A DOUBLE-HEF OPEN GAAP jacquard, jacquard LIKE SUCH A DRIVE SYSTEM EQUIPPED.
FR2658539B1 (en) * 1990-02-22 1992-06-05 Staubli Verdol Sarl Ets MECHANISM FOR CONTROLLING THE MOVEMENT OF THE CLAW FRAMES OF A CROWD FORMING DEVICE.
DE4027575C1 (en) * 1990-08-31 1992-02-06 Wolfgang 5600 Wuppertal De Herold Skew shed for loom - has lifting knives to carry sinkers for controlling needles, permitting high working speed
FR2669650B1 (en) * 1990-11-27 1994-04-29 Staubli Verdol MECHANISM FOR CONTROLLING THE FRAMES OF A CROWD FORMING DEVICE.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2717189A1 (en) * 1994-03-10 1995-09-15 Staubli Verdol Back and forth movement control mechanism of the claw frames of an armor mechanic.

Also Published As

Publication number Publication date
JPH0841749A (en) 1996-02-13
US5570724A (en) 1996-11-05
DE69503311D1 (en) 1998-08-13
DE69503311T2 (en) 1998-12-24
JP3545831B2 (en) 2004-07-21
FR2720414A1 (en) 1995-12-01
EP0681042A1 (en) 1995-11-08
ES2119342T3 (en) 1998-10-01
FR2720414B1 (en) 1996-07-19

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