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EP0788562A1 - Releasable neck cord for a jacquard machine harness - Google Patents

Releasable neck cord for a jacquard machine harness

Info

Publication number
EP0788562A1
EP0788562A1 EP95936594A EP95936594A EP0788562A1 EP 0788562 A1 EP0788562 A1 EP 0788562A1 EP 95936594 A EP95936594 A EP 95936594A EP 95936594 A EP95936594 A EP 95936594A EP 0788562 A1 EP0788562 A1 EP 0788562A1
Authority
EP
European Patent Office
Prior art keywords
jaw
shuttle
jaws
collet according
point
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.)
Granted
Application number
EP95936594A
Other languages
German (de)
French (fr)
Other versions
EP0788562B1 (en
Inventor
Jean-Paul Froment
Jean-Jacques Lacroix
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
Family has litigation
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Application filed by Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP0788562A1 publication Critical patent/EP0788562A1/en
Application granted granted Critical
Publication of EP0788562B1 publication Critical patent/EP0788562B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D03C3/40—Constructions of lifting-cords
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45471—Projection having movable connection between components thereof or variable configuration
    • Y10T24/45524—Projection having movable connection between components thereof or variable configuration including resiliently biased projection component or surface segment
    • Y10T24/45529—Requiring manual force applied against bias to interlock or disengage
    • Y10T24/45534—Requiring manual force applied against bias to interlock or disengage having connected leading edge and separated trailing arms
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/60—Biased catch or latch
    • Y10T403/606—Leaf spring

Definitions

  • the present invention relates to Jacquard machines for training the crowd on weaving machines and it relates more particularly to harnesses which are coupled to the movable actuating members of these machines for controlling the yarns of chain.
  • a harness includes a multitude of cords in number equal to that of the actuating organs of mechanics, each of these cords connecting to one or more arches which are themselves connected to the door rails -oei llet.
  • the cords and arches are connected using carabiners, which are very difficult to maneuver, and it can be seen that the subsequent disassembly and reassembly of a harness during its repair or replacement involve the handling of several thousand carabiners. The operation is therefore long and tedious and results in an expensive production shutdown. It is this drawback that the present invention intends to remedy, and this, using an assembly collar which is arranged so that its operation is simple and rapid, requiring only the displacement of a part in the axial direction.
  • the assembly collar according to the invention comprises two male and female elements which are respectively fixed to the ends of the cord and of the yoke to be connected so as to be able to be fitted axially one inside the other.
  • the female element contains at least one jaw whose jaws are profiled so as to pinch the male element immediately behind a harpoon point provided at the end thereof.
  • the latter is equipped, behind the harpoon point, with a ring or shuttle which is axially movable in order to control the jaws at opening and closing.
  • the bearing surface of each jaw against the shuttle is substantially axial when the jaw is in the open position.
  • the bearing surface of the jaw against the rear of the harpoon point is substantially radial when the jaw is in the closed position.
  • the axial length of the shuttle is greater than the distance between the external surface of the jaws and the rear face of the harpoon point when the male part is completely inserted into the female element.
  • the shuttle is not likely to escape the jaws by being pushed between the jaws and the harpoon point. This characteristic makes it possible to avoid any risk of jamming of the shuttle.
  • FIG. 2 shows in perspective with cutaway
  • the two components of an assembly collar according to the invention and - Figures 3 to 6 are axial sections on a larger scale illustrating the successive phases of the process of operating the collar.
  • Reference 1 designates a weaving mechanism of the VERDOL or JACQUARD type, supported above the weaving machine by a structure 2.
  • Each of the usual cords 3 of mechanics 1 is assembled, by means of a removable collar A, to one or more arches 5 which cross a board with holes 6 below which each of them passes through a grouting board 7 and carries a thread guide eyelet 8 before attaching to a return spring 9 attached to a bottom board 10, placed below the weaving machine (not shown).
  • Each collar 4 comprises two parts, namely a female element 11 made integral with one or more arches 5, and a male element or end piece 12 whose lower part cooperates with the element 11.
  • the female element 11 is constituted by a tubular cylindrical part open upwards, obtained by molding a semi-rigid synthetic material capable of deforming elastically. Below its upper outlet, this part 11 is cut longitudinally from slots which define two opposite jaws 13 independent of one another, the lower end of which is bent to form a beak or jaw 13a with a slightly profile concave.
  • the male end piece 12 is constituted by a cylindrical piece of rigid plastic material, the lower end of which is profiled to form a harpoon point 12a.
  • a shuttle 14 constituted by a ring provided slotted to be susceptible, by means of momentary elastic deformation, to be engaged on the rod 12b, between the aforementioned point 12a and an annular shoulder 12c of the male end piece 12.
  • the upper part of the latter is provided axially hollow to receive and retain the end of one of the cords 3 of the mechanics, in the same way as the base of L female element 11 of the collar is arranged to receive and retain the end of one or more arches 5.
  • each of the collars 4 according to the invention is in the coupled position illus ⁇ trée in Figure 3.
  • the harpoon point 12a is engaged in the female element 11 and is located in an axial position such that the lower jaws 13a are arranged immediately above said tip, so that the latter is thus " retained in place and prohibits any dissociation of the elements 11 and 12.
  • the jaws 13 are thus in the closed position.
  • each jaw 13 thus works in flexion when the harpoon tip tends to move, which is compatible with the mechanical properties of the semi-rigid synthetic material used for the jaws 13. This is particularly advantageous compared to a device in which the jaws would rest against the back of the harpoon point on their field because the jaws would then be subjected to creep by vibrations due to the movements of the loom and surrounding looms and by the load due to the weight of the harness, which could cause them to break or deform towards the shuttle and may lock the shuttle in position.
  • the bearing surface of the jaws 13a at the rear of the harpoon point 12a is substantially radial prevents a point-shaped edge or the field of the jaw 13a from being pressed against the point 12a, which could result in premature wear due to the vibrations and load already mentioned.
  • the position of the jaws 13a relative to the harpoon point 12a makes it possible to withstand the significant mechanical stresses which the collar undergoes. It is understood that, if the rear face of the tip 12a is not perpendicular to the axis of translation of the latter but has a positive angle relative to the horizontal so that the tip has a shaped profile arrow,
  • the external surface of the jaws 13a can be adapted so that, when the device is in the position in FIG. 3, the external face of the jaws 13a and the rear face of the harpoon point are in support One against L 'other and substantially parallel.
  • the shuttle 14 arrives at the end of the high travel by bearing against the annular shoulder 12c as shown in FIG. 4, so that the jaws 13a, after having been ordered Upon opening by a chamfer 14a provided on the lower edge of said shuttle, pinch it which is then firmly secured axially to the jaws 13 and the female element 11, the jaws then being in their position opened.
  • the chamfer 14a contributes to facilitating the opening of the jaws 13a by the shuttle 14, it being observed that the combination of the curved jaw 13a and the chamfer 14a makes it possible to obtain a large radial displacement of the jaws with a small axial displacement, and, consequently , a good dimensioning of the spans while respecting a minimum overall dimensions, which constitutes a capital criterion in a Jacquard harness having regard to the very large quantity of components which must not have interference between them while occupying a total surface as small as possible.
  • the surface of the jaws 13a opposite the cylindrical rod 12b is flared in the direction of the chamfer 14a, which contributes to the opening of the jaws.
  • the length L of the shuttle 14 is greater than the distance l between the external surface jaws 13a and the rear face of the harpoon point 12a when an upper shoulder 12d of the part 12 is in abutment against the upper part of the female element 11, as shown in FIG. 4.
  • the operator reverses its axial force and tends to separate the two elements 11 and 12 from one another, so that the shuttle 14, still gripped by the jaws 13a, moves downward along the cylindrical part 12b.
  • the shuttle 14 still gripped by the jaws 13a
  • the radial clearance between the cylindrical part of the male element 12 located between the two shoulders 12c and 12d and the annular inlet of the female element 11 is small enough that the range between this cylindrical part and this entry serves as an axial guide to the male element 12 in the female element 11.
  • This axial guide allows in the first place to maintain good alignment of the parts during the dynamic operation of the mechanics, thereby ensuring the '' obtaining optimum geometries at the jaw supports and avoiding premature wear of the parts.
  • this same axial guidance prevents the shuttle 14 from being misaligned with the axis of the female element 11 during its movements relative to the jaws 13a while any misalignment is likely to result in the shuttle being jammed. 14, and therefore in blocking the collar.
  • the continuation of the movement of separation of the two elements 11 and 12 causes them to dissociate in the manner illustrated in FIG. 2.
  • the shuttle 14 can be given a frustoconical profile with a large base facing the point of the point 12a, so that the pinching of the jaws on said shuttle brings the latter back towards the aforementioned point during the operation of uncoupling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Harvester Elements (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Adornments (AREA)
  • Woven Fabrics (AREA)
  • Automatic Assembly (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)

Abstract

A neck cord including two members (11, 12) attached to the ends of the twines (3) and cords (5) to be joined together. The socket member (11) contains jaws (13) for engaging both the harpoon head (12a) of the plug-in tip (12), and a shuttle (14) for controlling said jaws (13) during relative axial movement of the members.

Description

COLLET DEMONTABLE POUR HARNAIS DE MECANIQUES JACQUARD REMOVABLE COLLAR FOR JACQUARD MECHANICAL HARNESSES
La présente invention a trait aux mécaniques Jacquard pour la for¬ mation de la foule sur les machines à tisser et elle concerne plus par¬ ticulièrement les harnais qui sont attelés aux organes mobiles d'action- nement de ces mécaniques pour la commande des fils de chaîne. On sait que dans la construction classique, un harnais comprend une multitude de cordons en nombre égal à celui des organes d'actionne ent de la mécanique, chacun de ces cordons se raccordant à une ou plusieurs arcades qui sont elles-mêmes reliées aux lisses porte-oei llet. Le rac¬ cordement des cordons et des arcades est assuré à l'aide de mousquetons, de manoeuvre très malaisée, et l'on conçoit que le démontage et le remontage subséquent d'un harnais à l'occasion de sa réparation ou de son remplacement impliquent la manipulation de plusieurs milliers de mousquetons. L'opération est en conséquence longue et fastidieuse et entraîne un arrêt coûteux de la production. C'est à cet inconvénient que la présente invention entend remédier, et ce, à l'aide d'un collet d'assemblage qui est agencé de façon à ce que sa manoeuvre soit simple et rapide, en ne nécessitant que le déplacement d'une pièce dans le sens axial.The present invention relates to Jacquard machines for training the crowd on weaving machines and it relates more particularly to harnesses which are coupled to the movable actuating members of these machines for controlling the yarns of chain. We know that in conventional construction, a harness includes a multitude of cords in number equal to that of the actuating organs of mechanics, each of these cords connecting to one or more arches which are themselves connected to the door rails -oei llet. The cords and arches are connected using carabiners, which are very difficult to maneuver, and it can be seen that the subsequent disassembly and reassembly of a harness during its repair or replacement involve the handling of several thousand carabiners. The operation is therefore long and tedious and results in an expensive production shutdown. It is this drawback that the present invention intends to remedy, and this, using an assembly collar which is arranged so that its operation is simple and rapid, requiring only the displacement of a part in the axial direction.
On connaît, par exemple de EP 197 331, dans un domaine technique éloigné de celui de l'invention, des fermoirs à bijou avec une struc¬ ture à pointe et navette, utilisés dans des conditions très différentes de celles obtenues avec des machines à tisser.We know, for example from EP 197 331, in a technical field distant from that of the invention, jewelry clasps with a structure with point and shuttle, used under conditions very different from those obtained with weaving machines .
Le collet d'assemblage suivant l'invention comprend deux éléments mâle et femelle qui sont respectivement fixés aux extrémités du cordon et de l'arcade à raccorder pour être aptes à s'emmancher axialement l'un à l'intérieur de l'autre. L'élément femelle renferme au moins une m⬠choire dont les mors sont profilés pour venir pincer l'élément mâle immédiatement en arrière d'une pointe en harpon prévue en bout de celui-ci. Ce dernier est équipé, en arrière de la pointe en harpon, d'une bague ou navette qui est mobile axialement afin d'assurer la commande des mors à l'ouverture et à la fermeture.The assembly collar according to the invention comprises two male and female elements which are respectively fixed to the ends of the cord and of the yoke to be connected so as to be able to be fitted axially one inside the other. The female element contains at least one jaw whose jaws are profiled so as to pinch the male element immediately behind a harpoon point provided at the end thereof. The latter is equipped, behind the harpoon point, with a ring or shuttle which is axially movable in order to control the jaws at opening and closing.
Selon une forme de réalisation avantageuse de l'invention la surface de portée de chaque mors contre la navette est sensiblement axiale lorsque la mâchoire est en position ouverte. Ceci a pour conséquence que les efforts transmis par le mors à la navette sont radiaux, c'est-à-dire perpendiculaires au mouvement de La navette par rapport au reste de L'élément mâle. La navette n'a pas ainsi tendance a être déplacée par des efforts axiaux dûs au mors. En particulier, elle ne risque pas d'être chassée, par ces efforts à L'opposé de La pointe en harpon.According to an advantageous embodiment of the invention, the bearing surface of each jaw against the shuttle is substantially axial when the jaw is in the open position. This has the consequence that the forces transmitted by the jaw to the shuttle are radial, that is to say perpendicular to the movement of the shuttle relative to the rest of the male element. The shuttle does not therefore tend to be displaced by axial forces due to the jaw. In particular, it is not likely to be chased away, by these efforts opposite to the harpoon point.
Selon une autre disposition avantageuse de L'invention, la surface de portée du mors contre l'arrière de la pointe en harpon est sensible¬ ment radiale lorsque la mâchoire est en position fermée. Ainsi, les vibrations dues aux mouvements du métier à tisser et des métiers envi- ronnants qui sollicitent en permanence les mâchoires font travailler ces mâchoires en flexion, ce qui est adapté à leur géométrie. Il n'y a donc pas de risque d'usure ou de rupture des mâchoires alors qu'un tel risque serait présent avec un collet dans lequel les mâchoires reposeraient contre l'arrière de la pointe en harpon sur une arête ou sur leur champ, les mâchoires étant alors sollicitées au fluage et leurs extrémités en forme de pointe étant usées par les multiples contact avec La pointe en harpon.According to another advantageous arrangement of the invention, the bearing surface of the jaw against the rear of the harpoon point is substantially radial when the jaw is in the closed position. Thus, the vibrations due to the movements of the weaving loom and of the surrounding looms which permanently urge the jaws make these jaws work in bending, which is adapted to their geometry. There is therefore no risk of wear or breakage of the jaws when such a risk would be present with a collar in which the jaws would rest against the rear of the harpoon point on an edge or on their field, the jaws then being subjected to creep and their tip-shaped ends being worn by the multiple contact with the harpoon tip.
On peut aussi avantageusement prévoir que la longueur axiale de la navette est supérieure à la distance entre La surface externe des mors et La face arrière de la pointe en harpon lorsque la partie mâle est complètement intropduite dans L'élément femelle. La navette ne risque pas d'échapper aux mâchoires en étant repoussée entre Les mâchoires et La pointe en harpon. Cette caractéristique permet d'éviter tout risque de coincement de la navette. L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à La lumière de La description qui va suivre d'un mode de réalisation d'un collet démontable d'accouplement des cordons et des arcades d'un harnais de mécanique Jacquard, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :It is also advantageously possible to provide that the axial length of the shuttle is greater than the distance between the external surface of the jaws and the rear face of the harpoon point when the male part is completely inserted into the female element. The shuttle is not likely to escape the jaws by being pushed between the jaws and the harpoon point. This characteristic makes it possible to avoid any risk of jamming of the shuttle. The invention will be better understood and other advantages thereof will appear more clearly in the light of the description which follows of an embodiment of a removable collar for coupling cords and the arches of a harness Jacquard mechanics, given only by way of example and made with reference to the accompanying drawings in which:
- la figure 1 rappelle de manière schématique l'agencement général du harnais d'une mécanique Jacquard ;- Figure 1 schematically recalls the general arrangement of the harness of a Jacquard machine;
- la figure 2 montre en perspective avec arrachement Les deux éléments constitutifs d'un collet d'assemblage suivant L'invention et - Les figures 3 à 6 sont des coupes axiales à plus grande échelle illustrant les phases successives du processus de manoeuvre du collet.- Figure 2 shows in perspective with cutaway The two components of an assembly collar according to the invention and - Figures 3 to 6 are axial sections on a larger scale illustrating the successive phases of the process of operating the collar.
A La figure 1, La référence 1 désigne une mécanique d'armure de type VERDOL ou JACQUARD, supportée au-dessus de La machine à tisser par une structure 2. Chacun des cordons usuels 3 de la mécanique 1 est assemblé, au moyen d'un collet démontable A, à une ou plusieurs arcades 5 qui traversent une planche à trous 6 au-dessous de laquelle chacune d'elles passe à travers une planche d'empoutage 7 et porte un oeillet guide-fil 8 avant de s'attacher à un ressort de rappel 9 accroché à une planche de fond 10, placée au-dessous de la machine à tisser (non représentée) .In Figure 1, Reference 1 designates a weaving mechanism of the VERDOL or JACQUARD type, supported above the weaving machine by a structure 2. Each of the usual cords 3 of mechanics 1 is assembled, by means of a removable collar A, to one or more arches 5 which cross a board with holes 6 below which each of them passes through a grouting board 7 and carries a thread guide eyelet 8 before attaching to a return spring 9 attached to a bottom board 10, placed below the weaving machine (not shown).
Chaque collet 4 comprend deux pièces, à savoir un élément femelle 11 rendu solidaire d'une ou de plusieurs arcades 5, et un élément mâle ou embout 12 dont la partie inférieure coopère avec l'élément 11.Each collar 4 comprises two parts, namely a female element 11 made integral with one or more arches 5, and a male element or end piece 12 whose lower part cooperates with the element 11.
Comme montré, l'élément femelle 11 «st constitué par une pièce cylindrique tubulaire ouverte vers Le haut, obtenue par moulage d'une matière synthétique semi-rigide susceptible de se déformer élastique- ent. Au-dessous de son débouché supérieur, cette pièce 11 est découpée longitudinalement de fentes qui définissent deux mâchoires opposées 13 indépendantes l'une de L'autre, dont L'extrémité inférieure est recour¬ bée pour former un bec ou mors 13a à profil légèrement concave.As shown, the female element 11 "is constituted by a tubular cylindrical part open upwards, obtained by molding a semi-rigid synthetic material capable of deforming elastically. Below its upper outlet, this part 11 is cut longitudinally from slots which define two opposite jaws 13 independent of one another, the lower end of which is bent to form a beak or jaw 13a with a slightly profile concave.
L'embout mâle 12 est constitué par une pièce cylindrique en matière plastique rigide, dont l'extrémité inférieure est profilée pour former une pointe en harpon 12a. Sur la tige cylindrique 12b à plus petit diamètre qui surmonte cette pointe 12a, coulisse librement une navette 14, constituée par une bague prévue fendue pour être susceptible, moyennant déformation élastique momentanée, d'être engagée sur la tige 12b, entre la pointe 12a précitée et un épaulement annulaire 12ç de L'embout mâle 12. La partie supérieure de celui-ci est prévue axialement creuse pour recevoir et retenir l'extrémité de l'un des cordons 3 de la mécanique, de la même manière que La base de L'élément femelle 11 du collet est agencée pour recevoir et retenir l'extrémité d'une ou de plusieurs arcades 5. Lorsque La mécanique 1 est en état de fonctionnement, chacun des collets 4 suivant L'invention se trouve à La position accouplée illus¬ trée à la figure 3. La pointe en harpon 12a est engagée dans l'élément femelle 11 et est située à une position axiale telle que les mors infé¬ rieurs 13a sont disposés immédiatement au-dessus de ladite pointe, si bien que cette dernière est ainsi "retenue en place et interdit toute dissociation des éléments 11 et 12. Les mâchoires 13 sont ainsi en position fermée.The male end piece 12 is constituted by a cylindrical piece of rigid plastic material, the lower end of which is profiled to form a harpoon point 12a. On the cylindrical rod 12b with smaller diameter which surmounts this point 12a, slides freely a shuttle 14, constituted by a ring provided slotted to be susceptible, by means of momentary elastic deformation, to be engaged on the rod 12b, between the aforementioned point 12a and an annular shoulder 12c of the male end piece 12. The upper part of the latter is provided axially hollow to receive and retain the end of one of the cords 3 of the mechanics, in the same way as the base of L female element 11 of the collar is arranged to receive and retain the end of one or more arches 5. When the mechanics 1 is in working condition, each of the collars 4 according to the invention is in the coupled position illus¬ trée in Figure 3. The harpoon point 12a is engaged in the female element 11 and is located in an axial position such that the lower jaws 13a are arranged immediately above said tip, so that the latter is thus " retained in place and prohibits any dissociation of the elements 11 and 12. The jaws 13 are thus in the closed position.
Comme Les mors 13a sont constitués par L'extrémité recourbée des mâchoires 13, la surface de portée des mors contre L'arrière de La pointe en harpon 12a est sensiblement radiale. Chaque mâchoire 13 travaille ainsi en flexion lorsque la pointe en harpon a tendance à bouger, ce qui est compatible avec les propriétés mécaniques de la matière synthétique semi-rigide utilisée pour Les mâchoires 13. Ceci est particulièrement avantageux par rapport à un dispositif dans lequel les mâchoires reposeraient contre L'arrière de La pointe en harpon sur Leur champ car Les mâchoires seraient alors sollicitées au fluage par Les vibrations dues aux mouvements du métier à tisser et des métiers envi¬ ronnants et par la charge due au poids du harnais, ce qui pourrait les faire se rompre ou se déformer en direction de la navette et risquerait de bloquer la navette en position.As the jaws 13a are formed by the curved end of the jaws 13, the bearing surface of the jaws against the rear of the harpoon point 12a is substantially radial. Each jaw 13 thus works in flexion when the harpoon tip tends to move, which is compatible with the mechanical properties of the semi-rigid synthetic material used for the jaws 13. This is particularly advantageous compared to a device in which the jaws would rest against the back of the harpoon point on their field because the jaws would then be subjected to creep by vibrations due to the movements of the loom and surrounding looms and by the load due to the weight of the harness, which could cause them to break or deform towards the shuttle and may lock the shuttle in position.
Par ailleurs, le fait que la surface de portée des mors 13a à L'arrière de La pointe en harpon 12a est sensiblement radiale évite qu'une arête en forme de pointe ou le champ du mors 13a ne soit en appui contre la pointe 12a, ce qui pourrait résulter dans une usure prématurée du fait des vibrations et de la charge déjà mentionnées. Ainsi, la dis¬ position des mors 13a par rapport à La pointe en harpon 12a permet de résister aux sollicitations mécaniques importantes que subit Le collet. Il est bien entendu que, si la face arrière de La pointe 12a n'est pas perpendiculaire à l'axe de translation de celle-ci mais présente un angle positif par rapport à l'horizontale de sorte que la pointe a un profil en forme de flèche, La surface externe des mors 13a peut être adaptée pour que, lorsque le dispositif est dans la position de la figure 3, la face externe des mors 13a et la face arrière de La pointe en harpon soient en appui L'une contre L'autre et sensiblement paral¬ lèles.Furthermore, the fact that the bearing surface of the jaws 13a at the rear of the harpoon point 12a is substantially radial prevents a point-shaped edge or the field of the jaw 13a from being pressed against the point 12a, which could result in premature wear due to the vibrations and load already mentioned. Thus, the position of the jaws 13a relative to the harpoon point 12a makes it possible to withstand the significant mechanical stresses which the collar undergoes. It is understood that, if the rear face of the tip 12a is not perpendicular to the axis of translation of the latter but has a positive angle relative to the horizontal so that the tip has a shaped profile arrow, The external surface of the jaws 13a can be adapted so that, when the device is in the position in FIG. 3, the external face of the jaws 13a and the rear face of the harpoon point are in support One against L 'other and substantially parallel.
Lorsqu'il désire procéder au démontage du collet 4, L'opérateur exerce sur les éléments 11 et 12 un effort axial de contraction en vue de Les rapprocher L'un de l'autre. Dans ce mouvement axial. Les mors 13a des mâchoires 13 glissent le long de La tige cylindrique 12b en provo¬ quant une très Légère élévation de La navette 14.When he wishes to disassemble the collar 4, the operator exerts on the elements 11 and 12 an axial contraction force in order to bring them closer to one another. In this axial movement. The jaws 13a of the jaws 13 slide along the cylindrical rod 12b causing a very slight elevation of the shuttle 14.
Le déplacement axial de rapprochement se poursuivant, à un moment donné, La navette 14 arrive en fin de course haute par portée contre l'épaυlement annulaire 12ç ainsi que cela apparaît à la figure 4, si bien que les mors 13a, après avoir été commandés à L'ouverture par un chanfrein 14a prévu sur Le bord inférieur de Ladite navette, viennent pincer celle-ci qui se trouve alors fermement rendue solidaire axiale¬ ment des mâchoires 13 et de l'élément femelle 11, les mâchoires étant alors dans Leur position ouverte. Le chanfrein 14a contribue à faciliter l'ouverture des mors 13a par la navette 14, étant observé que la combinaison du mors 13a recourbé et du chanfrein 14a permet d'obtenir un grand déplacement radial des mors moyennant un faible déplacement axial, et, en conséquence, un bon dimensionnement des portées tout en respectant un encombrement minimal hors tout, ce qui constitue un critère capital dans un harnais Jacquard eu égard à la très grande quantité de composants qui ne doivent pas avoir d'interférences entre eux tout en occupant une surface totale la plus réduite possible. De plus dans la position de fermeture des mâchoires 13, la surface des mors 13a en regard de la tige cylindrique 12b est évasée en direction du chanfrein 14a, ce qui contribue à L'ouverture des mâchoiresThe axial movement of approximation continuing, at a given moment, the shuttle 14 arrives at the end of the high travel by bearing against the annular shoulder 12c as shown in FIG. 4, so that the jaws 13a, after having been ordered Upon opening by a chamfer 14a provided on the lower edge of said shuttle, pinch it which is then firmly secured axially to the jaws 13 and the female element 11, the jaws then being in their position opened. The chamfer 14a contributes to facilitating the opening of the jaws 13a by the shuttle 14, it being observed that the combination of the curved jaw 13a and the chamfer 14a makes it possible to obtain a large radial displacement of the jaws with a small axial displacement, and, consequently , a good dimensioning of the spans while respecting a minimum overall dimensions, which constitutes a capital criterion in a Jacquard harness having regard to the very large quantity of components which must not have interference between them while occupying a total surface as small as possible. In addition, in the closed position of the jaws 13, the surface of the jaws 13a opposite the cylindrical rod 12b is flared in the direction of the chamfer 14a, which contributes to the opening of the jaws.
13 car L'engagement du chanfrein 14a entre Les mors 13a en est facilité.13 because the engagement of the chamfer 14a between the jaws 13a is facilitated.
Dans la position d'ouverture des mâchoires 13, telle qu'elle est représentée aux figures 4 et 5, la surface de portée des mors 13a contre la tige cylindrique 12b de L'élément mâle 12 est sensiblement axiale, les efforts de pincement dûs au caractère semi-rigide des mâchoires 13 sont sensiblement radiaux, ce qui implique que la navette 14 n'a pas tendance à être déplacée dans la direction axiale le Long de La tige cylindrique 12b. La navette 14 est ainsi fermement maintenue en position par Les mors 13 et ne risque pas d'être chassée par des efforts axiaux en direction de l'épaulement 12ç.In the open position of the jaws 13, as shown in FIGS. 4 and 5, the bearing surface of the jaws 13a against the cylindrical rod 12b of the male element 12 is substantially axial, the pinching forces due to the semi-rigid character of the jaws 13 are substantially radial, which implies that the shuttle 14 does not tend to be displaced in the axial direction along the cylindrical rod 12b. The shuttle 14 is thus firmly held in position by the jaws 13 and does not risk being driven out by axial forces in the direction of the shoulder 12c.
Par ailleurs, afin d'éviter que la navette 14 ne puisse être coin¬ cée entre les mors 13a et l'arrière de la pointe, en harpon 12a, La longueur L de la navette 14 est supérieure à la distance l entre La surface externe des mors 13a et La face arrière de La pointe en harpon 12a lorsqu'un épaulement supérieur 12d de La pièce 12 est en appui contre La partie supérieure de L'élément femelle 11, ainsi que cela est représenté en figure 4. Lorsque le bord supérieur de L'élément femelle 11 vient buter contre le second épaulement annulaire 12d surmontant le premier " ι 2ç, l'opérateur inverse son effort axial et tend à séparer l'un de l'autre les deux éléments 11 et 12, de sorte que la navette 14, toujours pincée par les mors 13a, se déplace vers le bas le long de la partie cylindrique 12b. A un point donné du mouvement de séparation, la navetteFurthermore, in order to prevent the shuttle 14 from being wedged between the jaws 13a and the rear of the point, in harpoon 12a, the length L of the shuttle 14 is greater than the distance l between the external surface jaws 13a and the rear face of the harpoon point 12a when an upper shoulder 12d of the part 12 is in abutment against the upper part of the female element 11, as shown in FIG. 4. When the upper edge of the female element 11 abuts against the second annular shoulder 12d surmounting the first "ι 2ç, the operator reverses its axial force and tends to separate the two elements 11 and 12 from one another, so that the shuttle 14, still gripped by the jaws 13a, moves downward along the cylindrical part 12b. At a given point in the separation movement, the shuttle
14 s'immobilise contre La face supérieure de la pointe 12a, ainsi que cela apparaît à la figure 5, ce qui permet aux mors 13a d'échapper à l'accrochage sur la partie à grand diamètre de la pointe 12a du fait que la hauteur desdits mors est supérieure à la hauteur du chanfrein 14a de la navette.14 comes to rest against the upper face of the tip 12a, as shown in FIG. 5, which allows the jaws 13a to escape being caught on the large diameter part of the tip 12a because the height of said jaws is greater than the height of the chamfer 14a of shuttle.
Ainsi qu'il apparaît aux figures 3 à 6, Le jeu radial entre la partie cylindrique de l'élément mâle 12 située entre les deux épaulement 12ç et 12d et l'entrée annulaire de l'élément femelle 11 est assez faible pour que la portée entre cette partie cylindrique et cette entrée serve de guidage axial à l'élément mâle 12 dans l'élément femelle 11. Ce guidage axial permet en premier lieu de maintenir un bon alignement des pièces pendant le fonctionnement dynamique de la mécanique, en assurant ainsi l'obtention de géométries optimales au niveau des appuis des mors et en évitant l'usure prématurée des pièces. De plus ce même guidage axial évite que la navette 14 soit mal alignée avec L'axe de L'élément femelle 11 lors de ses mouvements par rapport aux mors 13a alors que tout défaut d'alignement est susceptible de résulter en un coincement de la navette 14, et donc en un blocage du collet. La poursuite du mouvement de séparation des deux éléments 11 et 12 provoque la dissociation de ceux-ci à la manière illustrée en fig. 2.As shown in Figures 3 to 6, the radial clearance between the cylindrical part of the male element 12 located between the two shoulders 12c and 12d and the annular inlet of the female element 11 is small enough that the range between this cylindrical part and this entry serves as an axial guide to the male element 12 in the female element 11. This axial guide allows in the first place to maintain good alignment of the parts during the dynamic operation of the mechanics, thereby ensuring the '' obtaining optimum geometries at the jaw supports and avoiding premature wear of the parts. In addition, this same axial guidance prevents the shuttle 14 from being misaligned with the axis of the female element 11 during its movements relative to the jaws 13a while any misalignment is likely to result in the shuttle being jammed. 14, and therefore in blocking the collar. The continuation of the movement of separation of the two elements 11 and 12 causes them to dissociate in the manner illustrated in FIG. 2.
Le désaccouplement des deux éléments du collet n'implique donc finalement qu'un mouvement axial dans les deux directions opposées. Il en va de même pour l'accouplement puisque l'engagement axial des deux éléments du collet provoque en premier lieu l'écartement des mors 13a au niveau de La pointe 12a de L'extrémité, puis L'élévation de la navette 14, ainsi que cela apparaît à la figure 6, Lesdits mors venant enfin se verrouiller sous celle-ci, au-dessus de La pointe 12a, comme cela est représenté à la figure 3. On conçoit que la pince renfermée par L'élément femelle 11 des collets peut comporter une seule ou plus de deux mâchoires. On observera que La manoeuvre du collet à L'accouplement comme à la dissociation est dans tous les cas simplifiée par rapport à celle des mousquetons classi¬ ques, une telle simplification permettant d'envisager une automatisation pour la manipulation simultanée de L'ensemble des collets 4 de La méca¬ nique.The uncoupling of the two elements of the collar therefore ultimately involves only an axial movement in the two opposite directions. The same applies to coupling since the axial engagement of the two elements of the collar firstly causes the jaws 13a to spread apart at the point 12a of the end, then the elevation of the shuttle 14, thus that this appears in Figure 6, said jaws finally locking under it, above the tip 12a, as shown in Figure 3. It is understood that the clamp enclosed by the female element 11 of the collars may have one or more than two jaws. It will be observed that the operation of the collar at coupling as at dissociation is in all cases simplified compared to that of the classic carabiners, such a simplification making it possible to envisage automation for the simultaneous manipulation of all the collars 4 of Mechanics.
IL doit d'ailleurs être entendu que la description qui précède n'a été donnée qu'à titre d'exemple et qu'elle ne limite nullement le domai¬ ne de l'invention dont on ne sortirait pas en remplaçant Les détails d'exécution décrits par tous autres équivalents. On peut en particulier conférer à la navette 14 un profil tronconique à grande base tournée du côté de La pointe 12a, de telle sorte que le pincement des mors sur ladite navette ramène cette dernière en direction de la pointe précitée au cours de L'opération de désaccouplement. It should moreover be understood that the foregoing description has been given only by way of example and that it in no way limits the field of the invention from which no one would depart by replacing The details of execution described by all other equivalents. In particular, the shuttle 14 can be given a frustoconical profile with a large base facing the point of the point 12a, so that the pinching of the jaws on said shuttle brings the latter back towards the aforementioned point during the operation of uncoupling.

Claims

R E V E N D I C A T I O N S
1. Collet démontable d'accouplement des cordons et des arcades d'un harnais de mécanique Jacquard, caractérisé en ce qu'il comprend, d'une part un élément femelle (11) qui possède au moins une mâchoire (13) élastiquement déformable dont l'extrémité est formée par un mors (13a) et d'autre part un élément mâle (12) qui présente, en arrière d'une pointe en harpon (12a), une navette (14) mobile axialement, entre deux butées, pour assurer la commande de la mâchoire précitée à l'ouverture et à la fermeture moyennant le déplacement axial de ladite navette par rapport audit mors.1. Removable collar for coupling cords and arches of a Jacquard mechanical harness, characterized in that it comprises, on the one hand, a female element (11) which has at least one elastically deformable jaw (13), the end is formed by a jaw (13a) and on the other hand a male element (12) which has, behind a harpoon point (12a), a shuttle (14) movable axially, between two stops, for ensuring the control of the aforementioned jaw when opening and closing by means of the axial displacement of said shuttle relative to said jaw.
2. Collet selon la revendication 1, caractérisé en ce que La surface de portée dudit mors (13a) contre Ladite navette (14) est sensiblement axiale lorsque ladite mâchoire (13) est en position ouverte. 2. Collet according to claim 1, characterized in that the bearing surface of said jaw (13a) against said shuttle (14) is substantially axial when said jaw (13) is in the open position.
3. Collet selon la revendication 1, caractérisé en ce que la surface de portée dudit mors (13a) contre l'arrière de ladite pointe en harpon (12a) est sensiblement radiale lorsque Ladite mâchoire (13) est en position fermée.3. Collet according to claim 1, characterized in that the bearing surface of said jaw (13a) against the rear of said harpoon point (12a) is substantially radial when said jaw (13) is in the closed position.
4. Collet selon La revendication 1, caractérisé en ce que la sur- face de portée dudit mors (13a) contre L'arrière de Ladite pointe en harpon (12a) est sensiblement parallèle à la face arrière de ladite pointe en harpon Lorsque Ladite mâchoire est en position fermée.4. Collet according to claim 1, characterized in that the bearing surface of said jaw (13a) against the rear of said harpoon point (12a) is substantially parallel to the rear face of said harpoon point when said jaw is in the closed position.
5. Collet selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ledit mors (13a) est constituée par l'extrémité recourbée de ladite mâchoire (13).5. Collet according to any one of claims 1 to 4, characterized in that said jaw (13a) is constituted by the curved end of said jaw (13).
6. Collet selon La revendication 1, caractérisé en ce que la longueur axiale (L) de ladite navette (14) est supérieure à la distance (l) entre La surface externe dudit mors (13a) et La face arrière de Ladite pointe en harpon (12a). 6. Collet according to claim 1, characterized in that the axial length (L) of said shuttle ( 14 ) is greater than the distance (l) between the external surface of said jaw ( 13a ) and the rear face of said harpoon point (12a).
7. Collet selon l'une des revendications précédentes, caractérisé en ce que le jeu radial entre la surface extérieure de l'élément mâle (12) entre deux épaulements (12ç, 12d) et la surface intérieure dudit élément femelle (11) est apte à permettre le guidage axial dudit élément mâle dans ledit élément femelle. 7. Collar according to one of the preceding claims, characterized in that the radial clearance between the outer surface of the male element (12) between two shoulders (12c, 12d) and the inner surface of said female element (11) is suitable to allow axial guidance of said male element in said female element.
8. Collet suivant la revendication 1, caractérisé en ce qu'un chanfrein (14a) est prévu sur Le bord de ladite navette (14) qui est tourné vers Ladite pointe en harpon (12a), Ledit chanfrein étant apte à coopérer avec Ledit mors (13a) dans Le sens de son ouverture.8. Collet according to claim 1, characterized in that a chamfer (14a) is provided on the edge of said shuttle (14) which is turned towards said harpoon point (12a), said chamfer being able to cooperate with said jaw (13a) in the direction of its opening.
9. Collet suivant la revendication 8, caractérisé en ce que Ledit mors (13a) prévu en bout de ladite mâchoire (13) comporte une hauteur supérieure à celle dudit chanfrein (14a) afin de permettre audit mors d'échapper à l'accrochage sur la partie à grand diamètre de ladite pointe (12a) quand ce mors est sur l'extérieur de ladite navette (14) et que les deux éléments mâle (12) et femelle (11) sont en train d'être éloignés l'un de l'autre.9. Collet according to claim 8, characterized in that said jaw (13a) provided at the end of said jaw (13) has a height greater than that of said chamfer (14a) in order to allow said jaw to escape hooking on the large diameter portion of said tip (12a) when this jaw is on the outside of said shuttle (14) and the two male (12) and female (11) elements are being moved away from one the other.
10. Collet selon la revendication 8, caractérisé en ce que La sur¬ face dudit mors (13a), disposée en regard de Ladite partie cylindrique (12b) lorsque ladite mâchoire est fermée, est évasée en direction dudit chanfrein (14a) de ladite navette (14). 10. Collet according to claim 8, characterized in that the surface of said jaw (13a), disposed opposite said cylindrical part (12b) when said jaw is closed, is flared in the direction of said chamfer (14a) of said shuttle (14).
11. Collet suivant L'une quelconque des revendications précédentes, caractérisé en ce que la navette est constituée par une bague (14) prévue fendue longitudinalement pour être susceptible, moyennant défor¬ mation élastique, d'être engagée sur la partie cylindrique (12b) ménagée entre la pointe en harpon (12a) et un épaulement annulaire (12ç) formant butée pour Ladite navette. 11. Collet according to any one of the preceding claims, characterized in that the shuttle is constituted by a ring (14) provided longitudinally split so as to be capable, by means of elastic deformation, of being engaged on the cylindrical part (12b) formed between the harpoon point (12a) and an annular shoulder (12c) forming a stop for said shuttle.
EP95936594A 1994-10-24 1995-10-23 Releasable neck cord for a jacquard machine harness Expired - Lifetime EP0788562B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9412922A FR2726010B3 (en) 1994-10-24 1994-10-24 REMOVABLE COLLAR FOR JACQUARD MECHANICAL HARNESSES
FR9412922 1994-10-24
PCT/FR1995/001399 WO1996012836A1 (en) 1994-10-24 1995-10-23 Releasable neck cord for a jacquard machine harness

Publications (2)

Publication Number Publication Date
EP0788562A1 true EP0788562A1 (en) 1997-08-13
EP0788562B1 EP0788562B1 (en) 2000-05-31

Family

ID=9468312

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EP95936594A Expired - Lifetime EP0788562B1 (en) 1994-10-24 1995-10-23 Releasable neck cord for a jacquard machine harness

Country Status (9)

Country Link
US (1) US5791382A (en)
EP (1) EP0788562B1 (en)
JP (1) JP3718228B2 (en)
KR (1) KR100345569B1 (en)
CN (1) CN1045798C (en)
DE (2) DE29515587U1 (en)
ES (1) ES2147305T3 (en)
FR (1) FR2726010B3 (en)
WO (1) WO1996012836A1 (en)

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EP1361302A3 (en) * 2002-05-06 2004-02-04 NV Michel van de Wiele Connecting means for detachably connecting cords of a Jacquard machine
WO2013128275A2 (en) 2012-03-01 2013-09-06 Nv Michel Van De Wiele Device for detachably connecting elements for positioning warp yarns on a weaving loom

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EP1361302A3 (en) * 2002-05-06 2004-02-04 NV Michel van de Wiele Connecting means for detachably connecting cords of a Jacquard machine
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WO2013128275A2 (en) 2012-03-01 2013-09-06 Nv Michel Van De Wiele Device for detachably connecting elements for positioning warp yarns on a weaving loom
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WO2013128275A3 (en) * 2012-03-01 2014-05-30 Nv Michel Van De Wiele Device for detachably connecting elements for positioning warp yarns on a weaving loom
US9399830B2 (en) 2012-03-01 2016-07-26 Nv Michel Van De Wiele Device for detachably connecting elements for positioning warp yarns on a weaving loom

Also Published As

Publication number Publication date
ES2147305T3 (en) 2000-09-01
DE69517330T2 (en) 2000-10-12
JP3718228B2 (en) 2005-11-24
KR970707333A (en) 1997-12-01
CN1161719A (en) 1997-10-08
KR100345569B1 (en) 2002-12-16
FR2726010B3 (en) 1996-08-30
EP0788562B1 (en) 2000-05-31
DE69517330D1 (en) 2000-07-06
JPH10508661A (en) 1998-08-25
CN1045798C (en) 1999-10-20
FR2726010A3 (en) 1996-04-26
DE29515587U1 (en) 1996-01-04
WO1996012836A1 (en) 1996-05-02
US5791382A (en) 1998-08-11

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