EP1588458B1 - Electrical connection device for bushing which supplies filaments, such as glass filaments - Google Patents

Electrical connection device for bushing which supplies filaments, such as glass filaments Download PDF

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Publication number
EP1588458B1
EP1588458B1 EP04702355A EP04702355A EP1588458B1 EP 1588458 B1 EP1588458 B1 EP 1588458B1 EP 04702355 A EP04702355 A EP 04702355A EP 04702355 A EP04702355 A EP 04702355A EP 1588458 B1 EP1588458 B1 EP 1588458B1
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EP
European Patent Office
Prior art keywords
connection
installation
terminal
die
busbar
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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
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EP04702355A
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German (de)
French (fr)
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EP1588458A1 (en
Inventor
Jean-Pierre Renaudin
Bertrand Flin
Jean-Louis Thiriet
Jean-François VINCENT
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Saint Gobain Adfors SAS
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Saint Gobain Technical Fabrics Europe SAS
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/06—Riveted connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/26—End pieces terminating in a screw clamp, screw or nut
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/621—Bolt, set screw or screw clamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts

Abstract

The electrical connection mechanism electrically feeds glass filaments. The mechanism has a connection jaw (4). There is an electrical connection piece (5) with a flexible body and an end section connected to the jaw section and a second free end section (52).

Description

L'invention concerne une installation de fibrage délivrant des filaments notamment de verre, et plus particulièrement une pièce de liaison électrique via laquelle alimenté en courant l'un des éléments de l'installation de fibrage en vue de son chauffage.The invention relates to a fiberizing installation delivering filaments, in particular glass filaments, and more particularly to an electrical connection piece via which one of the elements of the fiberizing installation is supplied with current for the purpose of heating it.

De manière classique, une installation de fibrage comporte un bloc de prise de verre (flow block) qui reçoit du verre fondu issu d'un canal relié au four dans lequel est obtenue la fusion du verre, un bloc intermédiaire (bushing block) et une filière (bushing). La filière est munie en fond d'une plaque pourvue d'une multitude d'orifices depuis lesquels s'écoule le verre fondu pour être étiré en une multiplicité de filaments.Conventionally, a fiberizing installation comprises a glass block (flow block) which receives molten glass from a channel connected to the furnace in which the melting of the glass is obtained, an intermediate block (bushing block) and a bushing. The die is provided at the bottom with a plate provided with a multitude of orifices from which the molten glass flows to be stretched into a multiplicity of filaments.

Ces filaments dont le diamètre peut varier de 5 à 33 µm sont rassemblés en au moins une nappe qui converge vers un dispositif d'assemblage pour former au moins une mèche et être par exemple bobinée. Selon sa destination, la mèche peut aussi être coupée (fils coupés) ou projetée sur un tapis (mats à fils continus).These filaments whose diameter may vary from 5 to 33 microns are gathered in at least one sheet which converges to an assembly device to form at least one wick and be for example wound. Depending on its destination, the wick can also be cut (cut son) or projected on a carpet (mats son continuous).

Les produits obtenus sont utilisés principalement dans diverses applications de renforcement.The products obtained are used mainly in various reinforcement applications.

La filière est fabriquée en alliage de platine et de rhodium, matériaux électriquement conducteurs et résistants dans le temps à de très hautes températures. Cette filière est chauffée par effet Joule pour maintenir à une certaine température, de l'ordre de 1100 à 1400°C, le verre qu'elle contient afin qu'il reste à l'état fondu pour être étiré depuis les orifices du fond de filière. Le chauffage de la filière est réalisé à partir d'un transformateur électrique par la connexion de deux terminaux situés chacun sur chacune des extrémité opposées de la filière, à des éléments de connexion électrique extérieurs à la filière.The die is made of platinum and rhodium alloy, electrically conductive materials and resistant over time to very high temperatures. This die is heated by the Joule effect to maintain at a certain temperature, of the order of 1100 to 1400 ° C, the glass it contains so that it remains in the molten state to be stretched from the orifices of the bottom. Faculty. The heating of the die is carried out from an electrical transformer by the connection of two terminals each located on each of the opposite ends of the die, to electrical connection elements external to the die.

Les terminaux de la filière, sont rapportés par soudage contre les parois latérales de la filière. Ils font saillie pour être raccordés aux éléments de connexion extérieurs.The terminals of the die are reported by welding against the side walls of the die. They protrude to be connected to the external connection elements.

Ces éléments de connexion extérieurs se présentent chacun sous la forme d'un mors en matériau électriquement conducteur, avantageusement en cuivre, qui vient par ses deux ailes pincer un terminal de la filière, le mors étant connecté à une borne fixe d'amenée de courant qui est reliée au transformateur électrique.These external connection elements are each in the form of a jaw of electrically conductive material, preferably copper, which comes by its two wings to pinch a terminal of the die, the jaw being connected to a fixed terminal of current supply which is connected to the electrical transformer.

Le mors est donc une pièce qui est suspendue après le terminal de connexion de la filière et fixé mécaniquement par serrage à l'aide d'une vis traversant les ailes du mors.The jaw is a piece that is suspended after the connection terminal of the die and mechanically fixed by clamping with a screw through the wings of the jaw.

Quant à la connexion entre la borne fixe et le mors, elle est assurée par le simple contact d'une portion du mors contre la borne, celle-ci étant maintenue à la hauteur voulue par tout système approprié d'accrochage à un élément fixe de l'environnement de la filière, avantageusement contre la paroi de la cabine de fibrage. Le document WO 99/22430 décrit un système d'alimentation électrique comportant au moins un terminal de connexion électrique, une borne d'amenée de courant électrique ainsi qu'au moins un dispositif de connexion électrique reliant un terminal de connexion électrique à la borne d'amenée de courant, le dispositif comportant un mors de connexion connectée en terminal de connexion électrique.As for the connection between the fixed terminal and the jaw, it is ensured by the simple contact of a portion of the jaw against the terminal, the latter being maintained at the desired height by any suitable system of attachment to a fixed element of the environment of the die, advantageously against the wall of the fiberizing cabin. The document WO 99/22430 discloses a power supply system comprising at least one electrical connection terminal, an electric power supply terminal and at least one electrical connection device connecting an electrical connection terminal to the current supply terminal, the device having a connection jaw connected to an electrical connection terminal.

Les perfectionnements apportés depuis plusieurs années, tels que l'augmentation surfacique du fond de filière afin de disposer de plus nombreux orifices de délivrance de filaments, les systèmes de refroidissement au niveau du fond de filière, le renfort mécanique de la filière, ont d'une part nécessité de pouvoir installer successivement sur une même position de fibrage des filières de longueurs et hauteurs différentes, d'autre part alourdi considérablement la masse de l'ensemble de la filière et de ses équipements périphériques. En outre, la mise en place de ces filières encombrantes et de ces équipements lourds a rendu plus difficile l'ajustement précis des différents organes les uns par rapport aux autres. Enfin, l'augmentation surfacique du fond de filière et l'augmentation du débit de la filière ont nécessité d'augmenter la puissance électrique fournie à la filière pour son chauffage. Il a fallu en conséquence accroître la section de conduction électrique du mors, ce qui a alourdi encore davantage la masse suspendue sous la filière. L'augmentation de taille de ces filières a également entraîné une plus importante dilatation du fond de la filière, se traduisant par la génération de contraintes mécaniques dans les terminaux, dans le fond et dans le corps-même de la filière.Improvements made over several years, such as the surface increase of the die bottom in order to have more filament delivery ports, the cooling systems at the bottom of the die, the mechanical reinforcement of the die, have a part need to be able to successively install on the same fiber drawing position dies of different lengths and heights, on the other hand significantly increased the mass of the entire die and its peripheral equipment. In addition, the establishment of these cumbersome sectors and these heavy equipment has made it more difficult to precisely adjust the different organs relative to each other. Finally, the surface increase of the bottom of the die and the increase of the flow of the die required to increase the electric power supplied to the die for its heating. It was therefore necessary to increase the electrical conduction section of the jaw, which further increased the mass suspended under the die. The increase in size of these channels also resulted in a greater expansion of the bottom of the die, resulting in the generation of mechanical stresses in the terminals, in the bottom and in the body of the die.

L'invention a donc pour but de fournir un dispositif de connexion électrique qui permette d'une part de s'adapter à différentes dimensions de filières, d'autre part d'alléger le poids et de réduire le coût des équipements supportés par la filière, tout en fournissant l'énergie électrique nécessaire au chauffage de la filière.The object of the invention is therefore to provide an electrical connection device which allows, on the one hand, to adapt to different dimensions of dies, on the other hand to reduce the weight and reduce the cost of equipment supported by the industry, while providing the electrical energy necessary for heating the sector.

L'invention se rapporte donc à un installation de fibrage destinée à délivrer des filaments notamment de verre, comportant une filière depuis laquelle sont étirés les filaments et qui est chauffée par au moins un système d'alimentation électrique comportant au moins un terminal de connexion électrique, une borne d'amenée de courant électrique ainsi qu'au moins un dispositif de connexion électrique reliant un terminal de connexion électrique à la borne d'amenée de courant, le dispositif comportant un mors de connexion connectée au terminal de connexion électrique ; l'installation est caractérisée en ce que le dispositif de connexion électrique comporte également une pièce de liaison électrique sans gaine de protection et constituée d'un corps flexible qui est apte à se déformer, d'une extrémité qui est connectée au mors, et d'une extrémité opposée libre qui est connectée à la borne d'amenée de courant, le terminal de connexion comportant une portion de raccordement qui coopère avec la pièce de connexion, et la borne d'amenée de courant comportant une surface de contact contre laquelle est rapportée l'extrémité libre de la pièce de liaison.The invention therefore relates to a fiber-drawing installation intended to deliver filaments, in particular glass filaments, comprising a die from which the filaments are drawn and which is heated by at least one electrical supply system comprising at least one electrical connection terminal. a power supply terminal and at least one electrical connection device connecting an electrical connection terminal to the current supply terminal, the device comprising a connection jaw connected to the electrical connection terminal; the installation is characterized in that the electrical connection device also comprises an electrical connection piece without protective sheath and consisting of a flexible body which is able to deform, of an end which is connected to the jaw, and of a free opposite end which is connected to the current supply terminal, the connection terminal having a connecting portion which cooperates with the connection piece, and the current supply terminal having a contact surface against which is reported the free end of the connecting piece.

Selon une autre caractéristique, le corps flexible de la pièce de liaison est constitué d'un assemblage de feuillards empilés les uns sur les autres. En variante, le corps flexible de la pièce de liaison est constitué d'une tresse.According to another characteristic, the flexible body of the connecting piece consists of an assembly of strips stacked on each other. Alternatively, the flexible body of the connecting piece consists of a braid.

Avantageusement, la pièce de liaison est en cuivre et/ou en aluminium. De préférence, un revêtement anti-oxydation recouvre la pièce de liaison.Advantageously, the connecting piece is made of copper and / or aluminum. Preferably, an anti-oxidation coating covers the connecting piece.

Selon une autre caractéristique, l'extrémité de la pièce de liaison connectée au mors est fixée à celui-ci par des moyens de maintien mécanique, tels que soudage ou vissage.According to another characteristic, the end of the connecting piece connected to the jaw is fixed thereto by mechanical holding means, such as welding or screwing.

Selon une autre caractéristique, l'extrémité de la pièce de liaison opposée à celle connectée au mors est constituée par une plage de raccordement rigide.According to another feature, the end of the connecting piece opposite to that connected to the jaw is constituted by a rigid connection pad.

Selon une caractéristique, la fixation du dispositif de connexion au terminal de connexion est réalisée par vissage de la portion avec le mors de connexion, et la fixation du dispositif de connexion à la borne d'amenée de courant est réalisée par des moyens de fixation de coopération mutuelle.According to one characteristic, the fixing of the connection device to the connection terminal is carried out by screwing the portion with the connection jaw, and the fixing of the connection device to the current supply terminal is carried out by means of fixing of the mutual cooperation.

Ces moyens de fixation de coopération mutuelle consistent en des éléments en saillie et en des lumières dans lesquelles sont destinés à s'engager les éléments en saillie.These mutual cooperation fixing means consist of projecting elements and of lights in which are intended to engage the projecting elements.

Avantageusement, les moyens de fixation de coopération mutuelle sont adaptés de façon à ajuster le positionnement de la connexion de l'extrémité libre de la pièce de liaison électrique à la borne d'amenée de courant quel que soit l'emplacement des terminaux de la filière.Advantageously, the mutual cooperation fixing means are adapted so as to adjust the positioning of the connection of the free end of the electrical connection piece to the current supply terminal regardless of the location of the terminals of the die. .

Selon une autre caractéristique, la borne d'amenée de courant présente une géométrie adaptée de façon à mettre en contact par sa surface de contact plusieurs extrémités libres de dispositifs de connexion respectifs reliés respectivement à une pluralité de terminaux de connexion.According to another characteristic, the current supply terminal has a geometry adapted to contact by its contact surface a plurality of free ends of respective connection devices respectively connected to a plurality of connection terminals.

Selon une autre caractéristique, la portion de raccordement d'un terminal de connexion est logée dans une gorge du mors de connexion, la portion comportant un évidement qui est traversé par une vis de fixation et qui est de forme adaptée pour régler la position de la fixation.According to another characteristic, the connection portion of a connection terminal is housed in a groove of the connecting jaw, the portion comprising a recess which is traversed by a fixing screw and which is shaped to adjust the position of the fixation.

Selon une caractéristique, le ou les terminaux d'un système d'alimentation électrique sont solidaires d'une paroi latérale de la filière, tandis que la barre d'amenée de courant du système d'alimentation électrique est fixée sur une paroi délimitant la zone d'installation de la filière.

  • La figure 1 illustre schématiquement une vue en élévation d'une filière, associée au produit de fabrication ;
  • La figure 2 est une vue en perspective montrant une partie de la connexion électrique de la filière à une alimentation électrique via le dispositif de connexion de l'invention ;
  • La figure 3 montre une vue en coupe d'un dispositif de connexion auquel est associé une borne de connexion de la filière ;
  • La figure 4 est une vue de profil d'un dispositif de connexion ;
According to one characteristic, the terminal or terminals of a power supply system are integral with a side wall of the die, while the power supply bar of the power supply system is fixed on a wall delimiting the zone. installation of the die.
  • The figure 1 schematically illustrates an elevational view of a die, associated with the product of manufacture;
  • The figure 2 is a perspective view showing part of the electrical connection of the die to a power supply via the connecting device of the invention;
  • The figure 3 shows a sectional view of a connection device which is associated with a connection terminal of the die;
  • The figure 4 is a profile view of a connection device;

Sur la figure 1 est reproduite schématiquement une installation de fibrage 10 qui comporte de manière classique un bloc de prise de verre 11, un bloc intermédiaire 12, et une filière 13.On the figure 1 is schematically reproduced a fiber drawing installation 10 which conventionally comprises a glass taking block 11, an intermediate block 12, and a die 13.

La filière 13 est munie en fond d'une plaque 14 qui est pourvue d'une multitude d'orifices 15, percés dans des tétons, depuis lesquels s'écoule le verre fondu pour être étiré en une multiplicité de filaments 16. Depuis quelques années, le nombre d'orifices avoisine et même dépasse les 4000.The die 13 is provided at the bottom with a plate 14 which is provided with a multitude of orifices 15, pierced in nipples, from which the molten glass flows to be stretched into a multiplicity of filaments 16. In recent years , the number of orifices is around and even exceeds 4000.

Les filaments sont rassemblés en une seule nappe 17 qui vient en contact avec un dispositif d'enduction 20 destiné à revêtir chaque filament d'un ensimage de type aqueux ou anhydre. Le dispositif 20 peut être constitué d'un bac alimenté en permanence par un bain d'ensimage et d'un rouleau en rotation dont la partie inférieure est constamment immergée dans le bain. Ce rouleau se recouvre en permanence d'une pellicule d'ensimage qui est prélevée au passage par les filaments 16 glissant à sa surface.The filaments are gathered in a single ply 17 which comes into contact with a coating device 20 intended to coat each filament with a sizing. of aqueous or anhydrous type. The device 20 may consist of a tank continuously fed by a sizing bath and a rotating roller whose lower part is constantly immersed in the bath. This roll is permanently covered with a film of size which is taken in passing by the filaments 16 sliding on its surface.

La nappe 17 converge ensuite vers un dispositif d'assemblage 21 où les différents filaments sont réunis pour donner naissance à une mèche en fibres de verre 1. Le dispositif d'assemblage 21 peut être constitué par une simple poulie à gorge ou par une plaque munie d'une encoche.The sheet 17 then converges to an assembly device 21 where the various filaments are joined together to give rise to a glass fiber mesh 1. The assembly device 21 can be constituted by a simple grooved pulley or a plate provided with a notch.

La mèche 1 en quittant le dispositif d'assemblage 21 pénètre dans un guide-fil 22, pour être bobinée autour d'un support 23 à axe horizontal par rapport à l'arrivée verticale du fil vers le guide-fil. La mèche est ainsi bobinée en étant issue directement de la filière pour constituer un roving R.The wick 1 leaving the assembly device 21 enters a wire guide 22 to be wound around a support 23 with a horizontal axis with respect to the vertical arrival of the wire to the guide wire. The wick is thus wound directly from the die to form a roving R.

De manière que le verre fondu délivré dans la filière 13 reste à une température de fusion suffisante et adaptée pour son passage au travers des orifices 15 et pour son étirement adéquat, on maintient chauffée cette filière.So that the molten glass delivered in the die 13 remains at a sufficient melting temperature and adapted for its passage through the orifices 15 and for its proper stretching, this die is kept heated.

De manière avantageuse, cette filière est constituée d'un alliage de platine-rhodium qui assure une bonne conductivité thermique, une résistance mécanique dans le temps vis-à-vis des hautes températures, ainsi qu'une bonne conductivité électrique dans l'ensemble de son corps, et au niveau de ses bornes de connexion qui sont reliées à au moins un dispositif de connexion électrique 3.Advantageously, this die is made of a platinum-rhodium alloy which ensures good thermal conductivity, mechanical resistance over time with respect to high temperatures, as well as good electrical conductivity in the overall range. its body, and at its connection terminals which are connected to at least one electrical connection device 3.

Afin d'optimiser la répartition de la puissance électrique fournie à la filière et d'alléger la masse suspendue à la filière, tout en fournissant l'énergie suffisante au chauffage de la filière, on prévoit sur chaque extrémité latérale 13a, 13b de la filière une pluralité de terminaux de connexion, par exemple trois terminaux 6, 7, 8 (figure 2).In order to optimize the distribution of the electrical power supplied to the die and to lighten the mass suspended from the die, while providing sufficient energy for heating the die, provision is made on each lateral end 13a, 13b of the die. a plurality of connection terminals, for example three terminals 6, 7, 8 ( figure 2 ).

Comme illustré sur la figure 2, chacun des terminaux 6, 7, 8 du côté 13a, et de manière similaire mais non illustré du côté opposé 13b de la filière, sont reliés par un dispositif de connexion électrique 3 à une borne fixe d'amenée de courant 9.As illustrated on the figure 2 , each of the terminals 6, 7, 8 on the side 13a, and similarly but not illustrated on the opposite side 13b of the die, are connected by an electrical connection device 3 to a fixed current supply terminal 9.

Les terminaux 6, 7, 8 sont dans le même matériau que la filière 13 et sont rapportés de manière soudée contre chacune des extrémités latérales 13a, 13b.The terminals 6, 7, 8 are in the same material as the die 13 and are welded to each of the lateral ends 13a, 13b.

Un terminal se présente de façon avantageuse sous la forme d'un L (figure 3), une des ailes 60 est solidaire par son extrémité libre de l'extrémité 13a de la filière, tandis que l'autre aile 61 perpendiculaire à l'aile 60 et dirigée parallèlement à l'extrémité latérale de la filière vers la partie inférieure de la filière est reliée à un dispositif de connexion 3. L'aile 61 comporte un évidement 62 destinée à loger, comme il sera décrit par la suite, une vis de fixation du dispositif de connexion et à régler la position ou la hauteur de la fixation.A terminal is advantageously in the form of an L ( figure 3 ), one of the wings 60 is secured by its free end of the end 13a of the die, while the other wing 61 perpendicular to the flange 60 and directed parallel to the lateral end of the die to the lower part of the die is connected to a connection device 3. The flange 61 has a recess 62 intended to house, as will be described later, a fastening screw of the connection device and to adjust the position or the height of the fastener.

Un dispositif de connexion 3 (figures 3 et 4) comporte un mors 4 destiné à être connecté à l'aile ou portion de raccordement 61 d'un terminal de la filière, et une pièce de liaison électrique 5 connectée par l'une de ses extrémités 51 au mors 4, son extrémité opposée 52 étant destinée à être connectée à la borne fixe d'amenée de courant 9.A connection device 3 ( figures 3 and 4 ) comprises a jaw 4 intended to be connected to the wing or connecting portion 61 of a terminal of the die, and an electrical connecting piece 5 connected by one of its ends 51 to the jaw 4, its opposite end 52 being intended to be connected to the fixed current supply terminal 9.

Le mors 4 présente une forme notamment en U et comporte une âme 40 et deux ailes 41, 42 sensiblement en regard et perpendiculaires à l'âme de manière à constituer une gorge 43. En position de connexion, est logée dans la gorge 43 l'aile 61, et une vis de serrage 44 traversant les ailes 41, 42 du mors et l'évidement 62 du terminal réalise le maintien mécanique du mors au terminal. L'évidement 62 est suffisamment dimensionné pour régler la hauteur de la fixation afin de contrôler la hauteur d'insertion de l'aile 61 dans la gorge 43 de manière à jouer sur la surface de contact entre le mors et le terminal, ce qui permet d'ajuster la température de la filière.The jaw 4 has a shape in particular U and comprises a core 40 and two wings 41, 42 substantially opposite and perpendicular to the core so as to constitute a groove 43. In the connection position, is housed in the groove 43 the wing 61, and a clamping screw 44 passing through the wings 41, 42 of the jaw and the recess 62 of the terminal carries the mechanical holding of the jaw to the terminal. The recess 62 is sufficiently sized to adjust the height of the attachment to control the insertion height of the flange 61 in the groove 43 so as to play on the contact surface between the jaw and the terminal, thereby to adjust the temperature of the die.

La pièce de liaison électrique 5 est constitué d'un corps 50 flexible en forme de U qui est apte à se déformer, et de deux extrémités opposées 51 et 52. La pièce de liaison électrique est en cuivre et/ou en aluminium, de préférence entièrement en cuivre, et ne comporte aucune gaine de protection.The electrical connection piece 5 consists of a U-shaped flexible body 50 which is able to deform, and of two opposite ends 51 and 52. The electrical connection piece is made of copper and / or aluminum, preferably made entirely of copper, and has no protective sheath.

La flexibilité du corps 50 permet d'absorber les contraintes mécaniques générées par la dilatation de la filière lors de sa mise en chauffe, sans créer de forces s'opposant à cette dilatation, notamment dues au poids des équipements supportés par la filière et à la rigidité des terminaux.The flexibility of the body 50 makes it possible to absorb the mechanical stresses generated by the expansion of the die during its heating, without creating forces opposing this expansion, in particular due to the weight of the equipment supported by the die and to the rigidity of the terminals.

Le corps 50 peut être constitué d'un assemblage de feuillards empilés les uns sur les autres tel qu'illustré ou bien d'une tresse.The body 50 may consist of an assembly of strips stacked on each other as illustrated or a braid.

Le feuillard présente l'avantage supplémentaire d'un effet de ressort tendant à faire remonter l'extrémité 51 et donc de s'opposer aux efforts verticaux engendrés par le poids des équipements.The strip has the additional advantage of a spring effect tending to raise the end 51 and thus to oppose the vertical forces generated by the weight of the equipment.

La tresse présente l'avantage supplémentaire de pouvoir être tordue sur elle-même, donnant ainsi à ce type de connexion l'aptitude à s'adapter à toutes formes et orientations du terminal de la filière.The braid has the additional advantage of being twisted on itself, thus giving this type of connection the ability to adapt to all forms and orientations of the terminal of the die.

L'extrémité 51 constituée comme le corps 50 est connectée au mors 4 et y est fixée par des moyens de fixation adaptés 53 tels que soudage ou vissage.The end 51 formed as the body 50 is connected to the jaw 4 and is fixed by suitable fixing means 53 such as welding or screwing.

L'extrémité libre 52 de la pièce de liaison 5 est constituée d'une plage de raccordement rigide terminant le corps flexible 50 qui lui est solidaire par exemple par soudure.The free end 52 of the connecting piece 5 consists of a rigid connection area terminating the flexible body 50 which is secured to it for example by welding.

La plage de raccordement 52 est destinée à être raccordée à la borne fixe d'amenée de courant 9. Elle comporte des moyens de fixation 54 destinés à coopérer mutuellement avec des moyens de fixation 91 agencés sur la borne 9.The connection pad 52 is intended to be connected to the fixed current supply terminal 9. It comprises fixing means 54 intended to mutually cooperate with fixing means 91 arranged on the terminal 9.

La borne d'amenée de courant 9 est une pièce fixée à la paroi P de la cabine de fibrage, par l'intermédiaire d'une semelle S isolante électriquement, à une hauteur adaptée à sa mise en regard avec les dispositifs de connexion 3. La barre 9 est connectée à un transformateur non illustré. Elle est en cuivre pour réaliser la meilleure conduction électrique du courant jusqu'à la plage de raccordement 52, reliée à elle par contact mécanique.The current supply terminal 9 is a part fixed to the wall P of the fiberizing cabin, via an electrically insulating sole S, at a height suitable for facing the connection devices 3. The bar 9 is connected to a transformer not shown. It is made of copper to achieve the best electrical conduction of the current up to the connection pad 52, connected to it by mechanical contact.

La borne 9 présente une face de connexion ou surface de contact 90 contre laquelle est plaquée la plage de raccordement 52 de la liaison flexible.The terminal 9 has a connection face or contact surface 90 against which is pressed the connection pad 52 of the flexible link.

Comme nous l'avons dit plus haut, il peut être préféré de disposer sur une même extrémité latérale de la filière plusieurs terminaux de connexion, trois par exemple 6, 7, 8. Pour cette raison, la borne 9 a avantageusement la forme d'une barre (figure 2) et s'étend selon la longueur de l'extrémité 13a de la filière pour faciliter la connexion des dispositifs 3 sur un seul élément. Ainsi, quel que soit le nombre de dispositifs de connexion utilisés, qui sont reliés d'une part à la borne unique d'amenée de courant et d'autre part à la pluralité de terminaux de la filière, une seule pièce 9 est nécessaire pour connecter l'ensemble des dispositifs 3.As we said above, it may be preferred to have on the same lateral end of the die several connection terminals, three for example 6, 7, 8. For this reason, the terminal 9 advantageously has the form of a bar ( figure 2 ) and extends along the length of the end 13a of the die to facilitate the connection of the devices 3 on a single element. Thus, regardless of the number of connection devices used, which are connected on the one hand to the single current supply terminal and on the other hand to the plurality of terminals of the die, a single piece 9 is necessary to connect all the devices 3.

En variante, on peut avoir plusieurs bornes d'amenée de courant, chacune connectée à un ou plusieurs terminaux de la filière : ceci permet d'alimenter de façon différenciée différentes zones ou différents éléments constitutifs de la filière.As a variant, it is possible to have a plurality of current supply terminals, each connected to one or more terminals of the bushing: this makes it possible to supply different zones or different components of the bushing in a differentiated manner.

La surface de contact 90 de la barre 9 comporte les moyens de fixation 91 qui sont destinés à coopérer mutuellement avec les moyens de fixation 54 de chacun des dispositifs 3. Ces moyens de coopération mutuelle sont constitués par des éléments en saillie tels que des goujons et par des lumières dans lesquelles les éléments en saillie peuvent s'engager. Une plaque de serrage 92 et des moyens de fixation supplémentaire 93 de type écrous leur sont associés.The contact surface 90 of the bar 9 comprises the fixing means 91 which are intended to mutually cooperate with the fastening means 54 of each of the devices 3. These mutual cooperation means are constituted by projecting elements such as studs and by lights in which the protruding elements can engage. A clamping plate 92 and additional fixing means 93 of the nut type are associated with them.

En outre, les moyens de fixation sont adaptés pour ajuster le positionnement de la connexion de la plage de raccordement 52 de la pièce de liaison électrique, à la barre 9 par rapport à l'emplacement des terminaux de la filière. Ainsi, quel que soit le nombre de terminaux de la filière et donc de dispositifs de connexion 3, il est permis d'assurer la fixation des dispositifs à la barre 9 en ajustant le positionnement des moyens de fixation 54 ou 91 en fonction de la distance séparant deux plages de raccordement 52 qui dépend du nombre de terminaux de la filières.In addition, the fixing means are adapted to adjust the positioning of the connection of the connection pad 52 of the electrical connection piece, to the bar 9 relative to the location of the terminals of the die. Thus, irrespective of the number of terminals of the die and thus of connection devices 3, it is permissible to secure the devices to the bar 9 by adjusting the positioning of the fixing means 54 or 91 as a function of the distance separating two connection pads 52 which depends on the number of terminals of the dies.

A titre d'exemple tel qu'illustré, les moyens de fixation 91 de la barre sont formés par les éléments en saillie fixes sur la barre, tandis que les moyens 54 de la pièce de liaison consistent en des lumières traversant les plages de raccordement 52, ces lumières étant avantageusement oblongues pour adapter le positionnement de la connexion.By way of example as illustrated, the fixing means 91 of the bar are formed by the projecting elements fixed on the bar, while the means 54 of the connecting piece consist of lights passing through the connection pads 52 these lights being advantageously oblong to adapt the positioning of the connection.

En variante, pour adapter le positionnement de la connexion, les éléments en saillie peuvent être solidaires ou rapportés contre la barre et aptes à être déplacés et bloqués en position sur la surface de contact 90, tandis que les moyens 54 consistent en des lumières de forme ronde ou oblongue.Alternatively, to adapt the positioning of the connection, the projecting elements may be integral or reported against the bar and able to be moved and locked in position on the contact surface 90, while the means 54 consist of shape lights round or oblong.

Claims (13)

  1. A fiberizing installation intended to deliver filaments, especially glass filaments, comprising a bushing (13) from which the filaments are drawn, which bushing is heated by at least one electrical supply system comprising at least one electrical connection terminal (6, 7, 8), a current busbar (9) and at least one electrical connection device (3), which device electrically connects the terminal (6, 7, 8) to the busbar (9), said device (3) comprising a jaw clamp (4) connected to the electrical connection terminal, characterized in that the electrical connection device (3) comprises also an electrical connection piece (5) with no protective sheath and consisting of a flexible body (50) capable to deform, one end (51) that is connected to the jaw clamp (4) and a free opposite end (52), the connection terminal (6, 7, 8) having a connection portion (61) that co-operates with the connection piece (4), and the busbar (9) having a contact surface (90) against which the free end (52) of the connection piece (5) is attached.
  2. The installation as claimed in claim 1, characterized in that the flexible body (50) of the connection piece (5) consists of an assembly of strips stacked on top of one another.
  3. The installation as claimed in claim 1, characterized in that the flexible body (50) of the connection piece (5) consists of a braid.
  4. The installation as claimed in one of claims 1 to 3, characterized in that the connection piece (5) is made of copper and/or aluminum.
  5. The installation as claimed in any one of the preceding claims, characterized in that an oxidation-resistant coating covers the connection piece (5).
  6. The installation as claimed in any one of the preceding claims, characterized in that the end (51) of the connection piece, connected to the jaw clamp (4), is fastened to the latter by mechanical retention means (53), such as welding or bolting.
  7. The installation as claimed in any one of the preceding claims, characterized in that the end (52) of the connection piece, away from the end (51) connected to the jaw clamp (4), is formed by a rigid connection pad.
  8. The installation as claimed in claim 1, characterized in that the connection device (3) is fastened to the connection terminal by bolting the portion (61) to the connection jaw clamp (4), and the connection device (3) is fastened to the busbar (9) by mutually co-operating fastening means (54, 91).
  9. The installationas claimed in claim 8, characterized in that the mutually co-operating fastening means (54, 91) consist of projecting elements and of slots into which the projecting elements are intended to fit.
  10. The installationas claimed in claim 8 or 9, characterized in that the mutually co-operating fastening means (54, 91) are designed so as to adjust the position of the connection of the free end (52) of the electrical connection piece (5) to the busbar (9) whatever the position of the bushing terminals.
  11. The installationas claimed in claim 1, characterized in that the busbar (9) has a geometry designed so as to bring into contact with its contact surface (90) several free ends (52) of respective connection devices (3) that are connected to a plurality of connection terminals (6, 7, 8), respectively.
  12. The installationas claimed in claim 1, characterized in that the connection portion (61) of a connection terminal (6, 7, 8) is housed in a groove (43) of the connection jaw clamp (4), the portion (61) having an opening (62) through which a fastening bolt (44) passes, which opening has a shape designed so as to adjust the position of the fastening.
  13. The installation as claimed in claim 1, characterized in that the terminal or terminals (6, 7, 8) of an electrical supply system are integral with a sidewall (13a) of the bushing (13), whereas the busbar (9) of the electrical supply system is fastened to a wall (P) defining the bushing installation zone.
EP04702355A 2003-01-29 2004-01-15 Electrical connection device for bushing which supplies filaments, such as glass filaments Expired - Lifetime EP1588458B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0301165 2003-01-29
FR0301165A FR2850491A1 (en) 2003-01-29 2003-01-29 Glass filament electrical connection mechanism having jaw connection and connection piece with flexible body end section connected/connecting free end connection
PCT/FR2004/000065 WO2004079867A1 (en) 2003-01-29 2004-01-15 Electrical connection device for bushing which supplies filaments, such as glass filaments

Publications (2)

Publication Number Publication Date
EP1588458A1 EP1588458A1 (en) 2005-10-26
EP1588458B1 true EP1588458B1 (en) 2008-08-06

Family

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Application Number Title Priority Date Filing Date
EP04702355A Expired - Lifetime EP1588458B1 (en) 2003-01-29 2004-01-15 Electrical connection device for bushing which supplies filaments, such as glass filaments

Country Status (11)

Country Link
US (1) US7232348B2 (en)
EP (1) EP1588458B1 (en)
KR (1) KR101061231B1 (en)
CN (1) CN100452541C (en)
AT (1) ATE403955T1 (en)
BR (1) BRPI0406735A (en)
DE (1) DE602004015569D1 (en)
FR (1) FR2850491A1 (en)
MX (1) MXPA05007912A (en)
RU (1) RU2319262C2 (en)
WO (1) WO2004079867A1 (en)

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Also Published As

Publication number Publication date
EP1588458A1 (en) 2005-10-26
CN100452541C (en) 2009-01-14
KR20050095629A (en) 2005-09-29
WO2004079867A1 (en) 2004-09-16
DE602004015569D1 (en) 2008-09-18
US7232348B2 (en) 2007-06-19
RU2005127080A (en) 2006-03-27
MXPA05007912A (en) 2005-09-30
FR2850491A1 (en) 2004-07-30
BRPI0406735A (en) 2005-12-20
KR101061231B1 (en) 2011-09-01
ATE403955T1 (en) 2008-08-15
US20060148276A1 (en) 2006-07-06
CN1759506A (en) 2006-04-12
RU2319262C2 (en) 2008-03-10

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