EP2913828A1 - Method for manufacturing a cable with circular cross-section - Google Patents

Method for manufacturing a cable with circular cross-section Download PDF

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Publication number
EP2913828A1
EP2913828A1 EP15152860.1A EP15152860A EP2913828A1 EP 2913828 A1 EP2913828 A1 EP 2913828A1 EP 15152860 A EP15152860 A EP 15152860A EP 2913828 A1 EP2913828 A1 EP 2913828A1
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EP
European Patent Office
Prior art keywords
rods
conductors
cable
manufacturing
assembly
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.)
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Application number
EP15152860.1A
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German (de)
French (fr)
Inventor
Thierry Seux
Alain Clertant
Chantal Barioz
Christèle KENSICHER
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Nexans SA
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Nexans SA
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Publication date
Application filed by Nexans SA filed Critical Nexans SA
Publication of EP2913828A1 publication Critical patent/EP2913828A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/221—Sheathing; Armouring; Screening; Applying other protective layers filling-up interstices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/02—Stranding-up
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1895—Internal space filling-up means

Definitions

  • the invention relates to a method of manufacturing a cable of circular section, and the cable obtained by said method.
  • the cable has at least two separate conductors separated by a filler material.
  • Such a method is intended to manufacture a solid cable and having a perfectly circular cross section.
  • a first category of these processes uses two extrusion steps, one to fill the interstices between conductors, and the other to deposit an outer sheath around said conductors embedded in said filler material.
  • This category of processes often involves the deposition of talc on the conductors, to prevent the filling material from sticking to said conductors.
  • the cables that are derived are not very deformable and are difficult to strip, because it is difficult to separate the conductors and the material filling.
  • a second category of methods consists in depositing rods of circular section, or deformable or non-deformable bits, in the interstices created by the assembly of the conductors of the cable. This method limits the risk of bonding the filling material to the conductors, but the filling remains partial.
  • the outer sheath, extruded on the assembly of said conductors and rods, can therefore bear only on the top of these elements, and therefore can not be perfectly cylindrical.
  • a manufacturing method according to the invention to obtain a solid cable and circular section, overcomes the disadvantages noted in the state of the art.
  • the invention relates to a method of manufacturing a solid cable and circular section, said cable comprising at least two conductors.
  • the resulting cable is solid and perfectly cylindrical, because the initially cylindrical filling rods deform during the assembly step, to form with the conductors a cylindrical assembly.
  • the diameter of these filling rods is a function of the number and size of the conductors, so that their cross sections complement those of said conductors to obtain a set of circular section.
  • the cross section of each rod can adopt a sectored profile.
  • the extrusion step of the outer sheath is easily and quickly performed on an assembly that already has a cylindrical shape, to obtain a sheathed cable of circular section.
  • each rod is made of a material of low hardness. As required, said rods may or may not conduct current.
  • the assembly step can be performed by twisting or not the conductors and the filling rods.
  • the conductors allow the transport of electric current and may or may not be isolated.
  • the rods are deformed so that their cross sections complement those of the conductors to obtain a cylindrical assembly.
  • this assembly step is performed with the same number of rods and conductors. The objective of this step is to obtain a set of cylindrical shape, before proceeding to the extrusion step.
  • the rods are made of deformable polymer at room temperature.
  • the rods can adapt to their environment by deforming.
  • the rods are made of ethylene copolymer. This material is perfectly suited to a manufacturing method according to the invention. Preferably, these rods are manufactured by extrusion.
  • each rod has a core capable of withstanding the mechanical stresses involved during said process.
  • This non-deformable core has a diameter that is significantly smaller than that of the rod, and ensures a good mechanical strength of said rod when manipulated or suspended, as part of this manufacturing process.
  • the core of each rod is made of a material to be selected from a polymer, a metal, and a mineral.
  • the filling rods and the conductors are twisted together.
  • the second object of the invention is a cable containing at least two conductors, the main characteristic of which is that it is obtained by means of a method according to the invention. In this way, this cable is full and is perfectly cylindrical.
  • a cable according to the invention contains three insulated conductors and three rods whose cross section is sectored, each of said three rods being inserted between two conductors to form a cylindrical assembly, said assembly being surrounded by an outer sheath.
  • the term "sectored" means that the cross-section of each rod has a substantially triangular profile, one of whose three sides is curved. In this way, the cross section of each rod comprises two rectilinear edges, forming between them an angle, the curved side connecting said two straight sides.
  • the filling rate of the rods is greater than or equal to 80%.
  • the available space between the conductors is occupied more than 80% by the rods for the cable obtained is considered full. It is not excluded that some small free spaces remain in the cable.
  • a manufacturing method according to the invention reliably and reproducibly, to obtain solid cables and perfectly circular section. It also has the advantage of being simple and quick to implement, because the steps it involves are done in a short time and are perfectly mastered. As a result, the cables obtained by such a method are little deformable to crushing while remaining flexible, and can be stripped with ease and precision. In addition, the cables thus produced have good fire resistance properties because of the presence of a large quantity of flame retardant material.
  • an installation 1 designed to manufacture a cable 2 from a manufacturing method according to the invention makes it possible to perform a step of assembling 5 conductors 6 and 4 filling rods, and an extrusion step 7 of FIG. an outer sheath 8 around a set 9 constituted by said conductors 6 and said rods 4.
  • This installation 1 also makes it possible to store at least one coil 31 of filling rods 4, in order to feed a cable manufacturing process 2 according to the invention.
  • a method of manufacturing a cable 2 comprises a preliminary step 3 of making the filling rods 4, which are used in the installation 1 previously described.
  • each assembly rod 4 is initially of cylindrical shape and comprises a central core 10 of reduced section relative to the section of said rod 4, said core being able to withstand the mechanical stresses generated during the course of a process according to the invention.
  • Each rod 4 is composed of a material of the ethylene copolymer type 11 and the core 10 is made of a technical textile such as, for example, polyamide, polyester or aramid.
  • the assembling step 5 consists of passing the conductors 6 and the filling rods 4 of cylindrical cross-section section into a die 30 and then twisting them together, so as to obtain a set 9 of cylindrical shape, such as illustrates it figure 4 .
  • the filling rods 4 are deform in contact with the conductors 6, to adopt a sectorized cross section, as illustrated by FIG. Figure 2B .
  • a sectored cross-section is characterized by two rectilinear edges 13, 14 forming an angle between them, said two edges 13, 14 being connected by a third curved edge 15.
  • each filling rod 5 prior to step 5 of assembly in the die 30, each filling rod 5 has a circular cross section, as shown in FIG. Figure 2A .
  • each rod 4 has deformed in contact with the conductors 6, to adopt a sectored cross section, as shown in FIG. Figure 2B .
  • the assembly 9 from the assembly step 5, is formed of an alternation of filling rods 4 having a sectored cross section, and cylindrical conductors 6, the two straight edges 13, 14 of the cross section of each 4 filling rod, coming into contact with the two conductors 6 flanking said rod 4. Since the material constituting each filling rod 4 is deformable, said two straight edges 13, 14 each adopt a curved profile to match the shape of each of said conductors 6 cylindrical. The curved edge 15 of the cross section of each rod 4 partially constitutes the outer surface of the cylindrical assembly 9.
  • the extrusion step 7, which is subsequent to the assembly step 5, consists in depositing around the cylindrical assembly 9 obtained at the end of said assembly step 5, an outer sheath 8 of polymer, to maintain and protect said assembly 9, said sheath 8 being insulating or not.
  • a manufacturing method makes it possible for example to manufacture a cable 2 having three 6 cylindrical conductors, each insulated by a sheath 16, and three filling rods 4 interposed between said conductors 6.
  • the three conductors 6 are in contact two by two, and provide a vacuum in the middle 17.
  • Each filling rod 4 is found in contact with the two drivers 6 who frame it.
  • the outer sheath 8, which has been extruded, is perfectly cylindrical, and encircles the conductors 6 and the filling rods 4 while being in contact with both said conductors 6 and said rods 4. It should be noted that the filling rate of the rods 4 in the space left available by the three conductors 6 in the cable 2, is greater than 80%.
  • a manufacturing method according to the invention thus makes it possible to obtain a solid, perfectly cylindrical cable 2.
  • Such a cable 2 remains flexible and little deformable to crushing.
  • the cable 2 obtained with a manufacturing method according to the invention can also be easily stripped to be inserted for example into an electrical connector. Indeed, it is sufficient to cut the outer cylindrical sheath 8 over its entire circumference, then remove it to reveal the conductors 6 and 4 filling rods. This removal is all the easier, since the rods 4 and the conductors 6 are not glued to said outer sheath 8. Since the filling rods 4 and the conductors 6 are not glued together, once the outer sheath 8 has been removed, it is easy to separate or gather said conductors 6, independently of said rods 4 filling.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Communication Cables (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention se rapporte à un procédé de fabrication d'un câble (2) plein et de section circulaire, ledit câble (2) comprenant au moins deux conducteurs (6). La principale caractéristique d'un procédé selon l'invention, est qu'il comprend les étapes suivantes, - une étape (3) de réalisation de tiges (4) de remplissage cylindriques et déformables, - une étape d'assemblage (5) à travers une filière de commettage (30) des tiges (4) de remplissage et des conducteurs (6) pour obtenir un ensemble (9) alterné de conducteurs (6) et de tiges (4), lesdites tiges (4) se déformant au contact desdits conducteurs (6), - une étape d'extrusion (7) d'une gaine (8) autour dudit ensemble (9) pour obtenir un câble (2) plein et de section circulaire.The invention relates to a method of manufacturing a cable (2) full and circular section, said cable (2) comprising at least two conductors (6). The main characteristic of a method according to the invention is that it comprises the following steps, a step (3) for producing cylindrical and deformable filling rods (4), - a step of assembly (5) through a die die (30) filling rods (4) and conductors (6) to obtain an alternating set (9) of conductors (6) and rods (4) said rods (4) deforming in contact with said conductors (6), - An extrusion step (7) of a sheath (8) around said assembly (9) to obtain a cable (2) full and circular section.

Description

L'invention se rapporte à un procédé de fabrication d'un câble de section circulaire, et au câble obtenu par ledit procédé. Dans le cadre de cette invention, il est supposé que le câble comporte au moins deux conducteurs distincts, séparés par un matériau de remplissage. Un tel procédé a pour but de fabriquer un câble plein et possédant une section transversale parfaitement circulaire.The invention relates to a method of manufacturing a cable of circular section, and the cable obtained by said method. In the context of this invention, it is assumed that the cable has at least two separate conductors separated by a filler material. Such a method is intended to manufacture a solid cable and having a perfectly circular cross section.

Les procédés actuellement mis en oeuvre pour obtenir de tels câbles, présentent quelques limites et inconvénients. En effet, une première catégorie de ces procédés met en oeuvre deux étapes d'extrusion, l'une pour combler les interstices entre conducteurs, et l'autre pour déposer une gaine externe autour desdits conducteurs noyés dans ledit matériau de remplissage. Cette catégorie de procédés implique souvent le dépôt de talc sur les conducteurs, pour éviter que le matériau de remplissage ne vienne se coller auxdits conducteurs. Outre le fait que ces procédés sont étalés dans le temps en raison du nombre important d'étapes qu'ils nécessitent, les câbles qui en sont issus sont peu déformables et sont difficiles à dénuder, car il est difficile de dissocier les conducteurs et le matériau de remplissage. Une deuxième catégorie de procédés consiste à déposer des tiges de section circulaire, ou des mèches déformables ou non, dans les interstices créés par l'assemblage des conducteurs du câble. Cette méthode limite les risques de collage du matériau de remplissage sur les conducteurs, mais le remplissage reste partiel. La gaine extérieure, extrudée sur l'assemblage desdits conducteurs et tiges, ne pourra donc prendre appui que sur le sommet de ces éléments, et ne pourra donc pas être parfaitement cylindrique.The methods currently used to obtain such cables have some limitations and disadvantages. Indeed, a first category of these processes uses two extrusion steps, one to fill the interstices between conductors, and the other to deposit an outer sheath around said conductors embedded in said filler material. This category of processes often involves the deposition of talc on the conductors, to prevent the filling material from sticking to said conductors. In addition to the fact that these processes are spread over time due to the large number of steps they require, the cables that are derived are not very deformable and are difficult to strip, because it is difficult to separate the conductors and the material filling. A second category of methods consists in depositing rods of circular section, or deformable or non-deformable bits, in the interstices created by the assembly of the conductors of the cable. This method limits the risk of bonding the filling material to the conductors, but the filling remains partial. The outer sheath, extruded on the assembly of said conductors and rods, can therefore bear only on the top of these elements, and therefore can not be perfectly cylindrical.

Un procédé de fabrication selon l'invention, permettant d'obtenir un câble plein et de section circulaire, s'affranchit des inconvénients relevés dans l'état de la technique.A manufacturing method according to the invention, to obtain a solid cable and circular section, overcomes the disadvantages noted in the state of the art.

L'invention a pour objet un procédé de fabrication d'un câble plein et de section circulaire, ledit câble comprenant au moins deux conducteurs.The invention relates to a method of manufacturing a solid cable and circular section, said cable comprising at least two conductors.

La principale caractéristique d'un procédé selon l'invention est qu'il comprend les étapes suivantes :

  • une étape de réalisation de tiges de remplissage cylindriques et déformables,
  • une étape d'assemblage à travers une filière de commettage des tiges de remplissage et des conducteurs pour obtenir un ensemble alterné de conducteurs et de tiges, lesdites tiges se déformant au contact desdits conducteurs,
  • une étape d'extrusion d'une gaine autour dudit ensemble pour obtenir un câble plein et de section circulaire.
The main characteristic of a method according to the invention is that it comprises the following steps:
  • a step of producing cylindrical and deformable filling rods,
  • a step of assembling through a threading die filling rods and conductors to obtain an alternating set of conductors and rods, said rods deforming in contact with said conductors,
  • a step of extruding a sheath around said assembly to obtain a solid cable and circular section.

Avec un tel procédé, le câble obtenu est plein et parfaitement cylindrique, car les tiges de remplissage initialement cylindriques se déforment lors de l'étape d'assemblage, pour former avec les conducteurs un ensemble cylindrique. Le diamètre de ces tiges de remplissage est fonction du nombre et de la taille des conducteurs, de manière à ce que leurs sections transversales viennent compléter celles desdits conducteurs pour obtenir un ensemble de section circulaire. Lors de l'étape d'assemblage, la section transversale de chaque tige peut adopter un profil sectorisé. Ainsi, l'étape d'extrusion de la gaine extérieure s'effectue facilement et rapidement sur un ensemble qui a déjà une forme cylindrique, pour obtenir un câble gainé de section circulaire. Avantageusement, chaque tige est réalisée dans un matériau de faible dureté. Selon les besoins, lesdites tiges peuvent être ou non conductrices de courant. L'étape d'assemblage peut être effectuée en torsadant ou non les conducteurs et les tiges de remplissage. Les conducteurs permettent le transport du courant électrique et peuvent être ou non isolés. Généralement, il y a autant de tiges de remplissage que de conducteurs. En se déformant, les tiges de remplissage peuvent venir combler de façon efficace, les espaces entre les conducteurs.With such a method, the resulting cable is solid and perfectly cylindrical, because the initially cylindrical filling rods deform during the assembly step, to form with the conductors a cylindrical assembly. The diameter of these filling rods is a function of the number and size of the conductors, so that their cross sections complement those of said conductors to obtain a set of circular section. During the assembly step, the cross section of each rod can adopt a sectored profile. Thus, the extrusion step of the outer sheath is easily and quickly performed on an assembly that already has a cylindrical shape, to obtain a sheathed cable of circular section. Advantageously, each rod is made of a material of low hardness. As required, said rods may or may not conduct current. The assembly step can be performed by twisting or not the conductors and the filling rods. The conductors allow the transport of electric current and may or may not be isolated. Generally, there are as many filling rods as there are drivers. By deforming, the filling rods can come to fill effectively the spaces between the drivers.

Avantageusement, lors de l'étape d'assemblage les tiges se déforment de manière à ce que leurs sections transversales complètent celles des conducteurs pour obtenir un ensemble cylindrique. Généralement, cette étape d'assemblage est réalisée avec le même nombre de tiges et de conducteurs. L'objectif de cette étape est d'obtenir un ensemble de forme cylindrique, avant de procéder à l'étape d'extrusion.Advantageously, during the assembly step the rods are deformed so that their cross sections complement those of the conductors to obtain a cylindrical assembly. Generally, this assembly step is performed with the same number of rods and conductors. The objective of this step is to obtain a set of cylindrical shape, before proceeding to the extrusion step.

De façon préférentielle, les tiges sont réalisées en polymère déformable à température ambiante. Ainsi, en étant soumises à l'action d'une contrainte mécanique, les tiges peuvent s'adapter à leur environnement en se déformant.Preferably, the rods are made of deformable polymer at room temperature. Thus, being subjected to the action of a mechanical stress, the rods can adapt to their environment by deforming.

Selon un mode de réalisation préféré d'un procédé de fabrication selon l'invention, les tiges sont réalisées en copolymère d'éthylène. Ce matériau est parfaitement adapté à un procédé de fabrication selon l'invention. Préférentiellement, ces tiges sont fabriquées par extrusion.According to a preferred embodiment of a manufacturing method according to the invention, the rods are made of ethylene copolymer. This material is perfectly suited to a manufacturing method according to the invention. Preferably, these rods are manufactured by extrusion.

Préférentiellement, chaque tige possède un coeur apte à supporter les contraintes mécaniques mises en jeu lors dudit procédé. Ce coeur indéformable possède un diamètre qui est nettement inférieur à celui de la tige, et permet d'assurer une bonne tenue mécanique de ladite tige lorsqu'elle est manipulée ou suspendue, dans le cadre de ce procédé de fabrication.Preferably, each rod has a core capable of withstanding the mechanical stresses involved during said process. This non-deformable core has a diameter that is significantly smaller than that of the rod, and ensures a good mechanical strength of said rod when manipulated or suspended, as part of this manufacturing process.

De façon avantageuse, le coeur de chaque tige est réalisé dans un matériau à choisir parmi un polymère, un métal, et un minéral.Advantageously, the core of each rod is made of a material to be selected from a polymer, a metal, and a mineral.

Avantageusement, lors de l'étape d'assemblage les tiges de remplissage et les conducteurs sont torsadés entre eux.Advantageously, during the assembly step the filling rods and the conductors are twisted together.

L'invention a pour deuxième objet un câble contenant au moins deux conducteurs, et dont la principale caractéristique est qu'il est obtenu au moyen d'un procédé selon l'invention. De cette manière, ce câble est plein et est parfaitement cylindrique.The second object of the invention is a cable containing at least two conductors, the main characteristic of which is that it is obtained by means of a method according to the invention. In this way, this cable is full and is perfectly cylindrical.

Préférentiellement, un câble selon l'invention contient trois conducteurs isolés et trois tiges dont la section transversale est sectorisée, chacune desdites trois tiges étant insérée entre deux conducteurs pour former un ensemble cylindrique, ledit ensemble étant entouré par une gaine extérieure. Le terme « sectorisée » signifie que la section transversale de chaque tige a un profil sensiblement triangulaire, dont l'un des trois coté est incurvé. De cette manière, la section transversale de chaque tige comprend deux bords rectilignes, faisant entre eux un angle, le coté incurvé reliant lesdits deux cotés rectilignes.Preferably, a cable according to the invention contains three insulated conductors and three rods whose cross section is sectored, each of said three rods being inserted between two conductors to form a cylindrical assembly, said assembly being surrounded by an outer sheath. The term "sectored" means that the cross-section of each rod has a substantially triangular profile, one of whose three sides is curved. In this way, the cross section of each rod comprises two rectilinear edges, forming between them an angle, the curved side connecting said two straight sides.

De façon avantageuse, le taux de remplissage des tiges est supérieur ou égal à 80%. Autrement dit, au sein du câble, l'espace disponible présent entre les conducteurs, est occupé à plus de 80% par les tiges pour que le câble obtenu soit considéré comme plein. Il n'est pas exclu que quelques petits espaces libres subsistent dans le câble.Advantageously, the filling rate of the rods is greater than or equal to 80%. In other words, within the cable, the available space between the conductors, is occupied more than 80% by the rods for the cable obtained is considered full. It is not excluded that some small free spaces remain in the cable.

Un procédé de fabrication selon l'invention permet, de façon fiable et reproductible, d'obtenir des câbles pleins et de section parfaitement circulaire. Il a de plus l'avantage d'être simple et rapide à mettre en oeuvre, car les étapes qu'il implique s'effectuent en un temps réduit et sont parfaitement maitrisées. Il en résulte que les câbles obtenus par un tel procédé sont peu déformables à l'écrasement tout en demeurant souples, et peuvent être dénudés avec facilité et précision. De plus les câbles ainsi réalisés présentent de bonnes propriétés de résistance au feu de par la présence d'une quantité importante de matériau ignifuge.A manufacturing method according to the invention reliably and reproducibly, to obtain solid cables and perfectly circular section. It also has the advantage of being simple and quick to implement, because the steps it involves are done in a short time and are perfectly mastered. As a result, the cables obtained by such a method are little deformable to crushing while remaining flexible, and can be stripped with ease and precision. In addition, the cables thus produced have good fire resistance properties because of the presence of a large quantity of flame retardant material.

On donne ci-après, une description détaillée d'un mode de réalisation préféré d'un procédé de fabrication selon l'invention, et d'un câble obtenu à partir d'un tel procédé, en se référant aux figures 1 à 5B.

  • La figure 1 est une vue en perspective d'une installation pour la réalisation d'un procédé de fabrication selon l'invention,
  • La figure 2A est une vue en coupe d'une tige de remplissage avant l'étape d'assemblage d'un procédé de fabrication selon l'invention,
  • La figure 2B est une vue en coupe d'une tige de remplissage après l'étape d'assemblage d'un procédé de fabrication selon l'invention,
  • La figure 3 est une en perspective de plusieurs conducteurs et de plusieurs tiges de remplissage juste avant une étape d'assemblage d'un procédé de fabrication selon l'invention,
  • La figure 4 est une de coté d'un ensemble de conducteurs et de tiges de remplissage après l'étape d'assemblage d'un procédé de fabrication selon l'invention,
  • La figure 5A est une vue en coupe transversal d'un câble obtenu à partir d'un procédé de fabrication selon l'invention,
  • La figure 5B est une vue en perspective d'une extrémité du câble de la figure 5A, qui a été dénudée.
The following is a detailed description of a preferred embodiment of a manufacturing method according to the invention, and a cable obtained from such a method, with reference to the Figures 1 to 5B .
  • The figure 1 is a perspective view of an installation for carrying out a manufacturing method according to the invention,
  • The Figure 2A is a sectional view of a filling rod before the assembly step of a manufacturing method according to the invention,
  • The Figure 2B is a sectional view of a filling rod after the assembly step of a manufacturing method according to the invention,
  • The figure 3 is a perspective view of several conductors and several filling rods just before a step of assembling a manufacturing method according to the invention,
  • The figure 4 is a side of a set of conductors and filling rods after the assembly step of a manufacturing method according to the invention,
  • The Figure 5A is a cross-sectional view of a cable obtained from a manufacturing method according to the invention,
  • The Figure 5B is a perspective view of one end of the cable from the Figure 5A , which has been stripped.

En se référant à la figure 1, une installation 1 conçue pour fabriquer un câble 2 à partir d'un procédé de fabrication selon l'invention, permet de réaliser une étape d'assemblage 5 de conducteurs 6 et de tiges 4 de remplissage, et une étape d'extrusion 7 d'une gaine extérieure 8 autour d'un ensemble 9 constitué par lesdits conducteurs 6 et lesdites tiges 4. Cette installation 1 permet également de stocker au moins une bobine 31 de tiges de remplissage 4, afin d'alimenter un procédé de fabrication de câble 2 selon l'invention.Referring to the figure 1 , an installation 1 designed to manufacture a cable 2 from a manufacturing method according to the invention makes it possible to perform a step of assembling 5 conductors 6 and 4 filling rods, and an extrusion step 7 of FIG. an outer sheath 8 around a set 9 constituted by said conductors 6 and said rods 4. This installation 1 also makes it possible to store at least one coil 31 of filling rods 4, in order to feed a cable manufacturing process 2 according to the invention.

En se référant à la figure 2A, un procédé de fabrication d'un câble 2 selon l'invention, comprend une étape 3 préliminaire de réalisation des tiges 4 de remplissage, qui sont utilisées dans l'installation 1 préalablement décrite. Ainsi, chaque tige 4 d'assemblage est initialement de forme cylindrique et comporte un coeur central 10 de section réduite par rapport à la section de ladite tige 4, ledit coeur étant apte à résister aux contraintes mécaniques engendrées lors du déroulement d'un procédé selon l'invention. Chaque tige 4 est composée d'un matériau de type copolymère d'éthylène 11 et le coeur 10 est réalisé en textile technique tel que par exemple, du polyamide, du polyester ou de l'aramide.Referring to the Figure 2A , a method of manufacturing a cable 2 according to the invention, comprises a preliminary step 3 of making the filling rods 4, which are used in the installation 1 previously described. Thus, each assembly rod 4 is initially of cylindrical shape and comprises a central core 10 of reduced section relative to the section of said rod 4, said core being able to withstand the mechanical stresses generated during the course of a process according to the invention. Each rod 4 is composed of a material of the ethylene copolymer type 11 and the core 10 is made of a technical textile such as, for example, polyamide, polyester or aramid.

En se référant à la figure 3, l'étape d'assemblage 5 consiste à faire passer dans une filière de commettage 30 les conducteurs 6 et les tiges 4 de remplissage de section transversale cylindrique, puis à les torsader ensemble, de manière à obtenir un ensemble 9 de forme cylindrique, comme l'illustre la figure 4. Au cours de cette étape d'assemblage, les tiges 4 de remplissage se déforment au contact des conducteurs 6, pour adopter une section transversale sectorisée, comme l'illustre la figure 2B.Referring to the figure 3 the assembling step 5 consists of passing the conductors 6 and the filling rods 4 of cylindrical cross-section section into a die 30 and then twisting them together, so as to obtain a set 9 of cylindrical shape, such as illustrates it figure 4 . During this assembly step, the filling rods 4 are deform in contact with the conductors 6, to adopt a sectorized cross section, as illustrated by FIG. Figure 2B .

Ainsi, en se référant à la figure 2B, une section transversale sectorisée se caractérise par deux bords rectilignes 13, 14 faisant entre eux un angle, lesdits deux bords 13, 14 étant reliés par un troisième bord incurvé 15.So, referring to the Figure 2B a sectored cross-section is characterized by two rectilinear edges 13, 14 forming an angle between them, said two edges 13, 14 being connected by a third curved edge 15.

De cette manière, avant l'étape 5 d'assemblage dans la filière 30 de commettage, chaque tige 5 de remplissage possède une section transversale circulaire, comme le montre la figure 2A. Après ladite étape d'assemblage 5, chaque tige 4 s'est déformée au contact des conducteurs 6, pour adopter une section transversale sectorisée, comme le montre la figure 2B.In this way, prior to step 5 of assembly in the die 30, each filling rod 5 has a circular cross section, as shown in FIG. Figure 2A . After said assembly step 5, each rod 4 has deformed in contact with the conductors 6, to adopt a sectored cross section, as shown in FIG. Figure 2B .

Néanmoins, selon une autre variante de réalisation d'un procédé de fabrication selon l'invention, il est possible de préformer les tiges 4 de remplissage au moyen de galets rotatifs 12, pouvant ou non être motorisés, lesdits galets permettant de faire défiler les tiges 4 de remplissage, tout en les déformant de manière à modifier la forme de leur section transversale.However, according to another alternative embodiment of a manufacturing method according to the invention, it is possible to preform the filling rods 4 by means of rotating rollers 12, which may or may not be motorized, said rollers making it possible to make the rods run 4 filling, while deforming so as to change the shape of their cross section.

L'ensemble 9 issu de l'étape d'assemblage 5, est formé d'une alternance de tiges 4 de remplissage ayant une section transversale sectorisée, et de conducteurs 6 cylindriques, les deux bords rectilignes 13, 14 de la section transversale de chaque tige 4 de remplissage, venant au contact des deux conducteurs 6 encadrant ladite tige 4. Puisque le matériau constitutif de chaque tige 4 de remplissage est déformable, lesdits deux bords rectilignes 13, 14 adoptent chacun un profil incurvé pour épouser la forme de chacun desdits conducteurs 6 cylindriques. Le bord incurvé 15 de la section transversale de chaque tige 4 constitue partiellement la surface externe de l'ensemble 9 cylindrique.The assembly 9 from the assembly step 5, is formed of an alternation of filling rods 4 having a sectored cross section, and cylindrical conductors 6, the two straight edges 13, 14 of the cross section of each 4 filling rod, coming into contact with the two conductors 6 flanking said rod 4. Since the material constituting each filling rod 4 is deformable, said two straight edges 13, 14 each adopt a curved profile to match the shape of each of said conductors 6 cylindrical. The curved edge 15 of the cross section of each rod 4 partially constitutes the outer surface of the cylindrical assembly 9.

L'étape d'extrusion 7, qui est postérieure à l'étape d'assemblage 5, consiste à déposer autour de l'ensemble cylindrique 9 obtenu à l'issue de ladite étape d'assemblage 5, une gaine 8 extérieure en polymère, pour maintenir et protéger ledit ensemble 9, ladite gaine 8 étant isolante ou non.The extrusion step 7, which is subsequent to the assembly step 5, consists in depositing around the cylindrical assembly 9 obtained at the end of said assembly step 5, an outer sheath 8 of polymer, to maintain and protect said assembly 9, said sheath 8 being insulating or not.

Ainsi, en se référant à la figure 5A, un procédé de fabrication selon l'invention, permet par exemple de fabriquer un câble 2 possédant trois conducteurs 6 cylindriques, isolés chacun par une gaine 16, et trois tiges 4 de remplissage interposées entre lesdits conducteurs 6. Les trois conducteurs 6 sont au contact deux à deux, et ménagent en leur milieu un vide 17. Chaque tige 4 de remplissage se retrouve au contact des deux conducteurs 6 qui l'encadrent. La gaine extérieure 8 qui a été extrudée, est parfaitement cylindrique, et vient enserrer les conducteurs 6 et les tiges 4 de remplissage en étant au contact à la fois desdits conducteurs 6 et desdites tiges 4. Il est à préciser que le taux de remplissage des tiges 4 dans l'espace laissé disponible par les trois conducteurs 6 dans le câble 2, est supérieur à 80%.So, referring to the Figure 5A , a manufacturing method according to the invention makes it possible for example to manufacture a cable 2 having three 6 cylindrical conductors, each insulated by a sheath 16, and three filling rods 4 interposed between said conductors 6. The three conductors 6 are in contact two by two, and provide a vacuum in the middle 17. Each filling rod 4 is found in contact with the two drivers 6 who frame it. The outer sheath 8, which has been extruded, is perfectly cylindrical, and encircles the conductors 6 and the filling rods 4 while being in contact with both said conductors 6 and said rods 4. It should be noted that the filling rate of the rods 4 in the space left available by the three conductors 6 in the cable 2, is greater than 80%.

Un procédé de fabrication selon l'invention permet ainsi d'obtenir un câble 2 plein, parfaitement cylindrique. Un tel câble 2 demeure souple et peu déformable à l'écrasement.A manufacturing method according to the invention thus makes it possible to obtain a solid, perfectly cylindrical cable 2. Such a cable 2 remains flexible and little deformable to crushing.

En se référant à la figure 5B, le câble 2 obtenu avec un procédé de fabrication selon l'invention, peut également être facilement dénudé pour être par exemple inséré dans un connecteur électrique. En effet, il suffit de couper la gaine cylindrique extérieure 8 sur toute sa circonférence, puis de la retirer afin de laisser apparaitre les conducteurs 6 et les tiges 4 de remplissage. Ce retrait est d'autant plus facilité, que les tiges 4 et les conducteurs 6 ne sont pas collés à ladite gaine extérieure 8. Puisque les tiges 4 de remplissage et les conducteurs 6 ne sont pas non plus collés entre eux, une fois que la gaine extérieure 8 a été retirée, il est aisé de séparer ou de rassembler lesdits conducteurs 6, indépendamment desdites tiges 4 de remplissage.Referring to the Figure 5B , the cable 2 obtained with a manufacturing method according to the invention, can also be easily stripped to be inserted for example into an electrical connector. Indeed, it is sufficient to cut the outer cylindrical sheath 8 over its entire circumference, then remove it to reveal the conductors 6 and 4 filling rods. This removal is all the easier, since the rods 4 and the conductors 6 are not glued to said outer sheath 8. Since the filling rods 4 and the conductors 6 are not glued together, once the outer sheath 8 has been removed, it is easy to separate or gather said conductors 6, independently of said rods 4 filling.

Claims (10)

Procédé de fabrication d'un câble (2) plein et de section circulaire, ledit câble (2) comprenant au moins deux conducteurs (6), caractérisé en ce qu'il comprend les étapes suivantes, - une étape (3) de réalisation de tiges (4) de remplissage cylindriques et déformables, - une étape d'assemblage (5) à travers une filière de commettage (30) des tiges (4) de remplissage et des conducteurs (6) pour obtenir un ensemble (9) alterné de conducteurs (6) et de tiges (4), lesdites tiges (4) se déformant au contact desdits conducteurs (6), - une étape d'extrusion (7) d'une gaine (8) autour dudit ensemble (9) pour obtenir un câble (2) plein et de section circulaire. A method of manufacturing a solid cable (2) of circular cross-section, said cable (2) comprising at least two conductors (6), characterized in that it comprises the following steps, a step (3) for producing cylindrical and deformable filling rods (4), - a step of assembly (5) through a die die (30) filling rods (4) and conductors (6) to obtain an alternating set (9) of conductors (6) and rods (4) said rods (4) deforming in contact with said conductors (6), - An extrusion step (7) of a sheath (8) around said assembly (9) to obtain a cable (2) full and circular section. Procédé de fabrication selon la revendication 1, caractérisé en ce que lors de l'étape d'assemblage (5) les tiges (4) se déforment de manière à ce que leurs sections transversales complètent celles des conducteurs (6) pour obtenir un ensemble (9) cylindrique.Manufacturing method according to claim 1, characterized in that during the assembly step (5) the rods (4) are deformed so that their cross sections complement those of the conductors (6) to obtain a set ( 9) cylindrical. Procédé de fabrication selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que les tiges (4) sont réalisées en polymère déformable à température ambiante.Manufacturing method according to any one of claims 1 or 2, characterized in that the rods (4) are made of deformable polymer at room temperature. Procédé de fabrication selon la revendication 3, caractérisé en ce que les tiges (4) sont réalisées en copolymère d'éthylène (11).Manufacturing method according to claim 3, characterized in that the rods (4) are made of ethylene copolymer (11). Procédé de fabrication selon l'une quelconque des revendications 1 à 4, caractérisé en ce que chaque tige (4) possède un coeur (10) apte à supporter les contraintes mécaniques mises en jeu lors dudit procédé.Manufacturing method according to any one of claims 1 to 4, characterized in that each rod (4) has a core (10) adapted to withstand the mechanical stresses involved in said process. Procédé de fabrication selon la revendication 5, caractérisé en ce que le coeur (10) de chaque tige (4) est réalisé dans un matériau à choisir parmi un polymère, un métal, et un minéral.Manufacturing method according to claim 5, characterized in that the core (10) of each rod (4) is made of a material to be selected from a polymer, a metal, and a mineral. Procédé de fabrication selon l'une quelconque des revendications 1 à 6, caractérisé en ce que lors de l'étape d'assemblage (5) les tiges (4) de remplissage et les conducteurs (6) sont torsadés entre eux.Manufacturing method according to any one of claims 1 to 6, characterized in that during the assembly step (5) the rods (4) for filling and the conductors (6) are twisted together. Câble (2) contenant au moins deux conducteurs, caractérisé en ce qu'il est obtenu au moyen d'un procédé conforme à l'une quelconque des revendications 1 à 7.Cable (2) containing at least two conductors, characterized in that it is obtained by means of a method according to any one of claims 1 to 7. Câble selon la revendication 8, caractérisé en ce qu'il contient trois conducteurs (6) isolés et trois tiges (4) dont la section transversale est sectorisée, et en ce que chacune desdites trois tiges (4) est insérée entre deux conducteurs (6) pour former un ensemble (9) cylindrique, ledit ensemble (9) étant entouré par une gaine (8) extérieure.Cable according to Claim 8, characterized in that it contains three insulated conductors (6) and three rods (4) whose cross-section is sectored, and in that each of said three rods (4) is inserted between two conductors (6). ) to form a cylindrical assembly (9), said assembly (9) being surrounded by an outer sheath (8). Câble selon l'une quelconque des revendications 8 ou 9, caractérisé en ce que le taux de remplissage des tiges (4) est supérieur ou égal à 80%.Cable according to any one of claims 8 or 9, characterized in that the filling rate of the rods (4) is greater than or equal to 80%.
EP15152860.1A 2014-02-27 2015-01-28 Method for manufacturing a cable with circular cross-section Withdrawn EP2913828A1 (en)

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FR1451601A FR3017987B1 (en) 2014-02-27 2014-02-27 METHOD FOR MANUFACTURING CIRCULAR SECTION CABLE

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106229088A (en) * 2016-09-21 2016-12-14 广东冠华传导科技有限公司 A kind of stranded equipment of shaped conductor and using method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1728119A (en) * 1925-08-01 1929-09-10 Bernard W Gates Cable construction
US3288916A (en) * 1964-07-28 1966-11-29 Columbian Rope Co Multiple conductor cable with tubular foam filler insulation
GB2069746A (en) * 1980-02-19 1981-08-26 Standard Telephones Cables Ltd Communications cables
CA1226047A (en) * 1984-08-10 1987-08-25 Steven D. Hartman Cable filler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1728119A (en) * 1925-08-01 1929-09-10 Bernard W Gates Cable construction
US3288916A (en) * 1964-07-28 1966-11-29 Columbian Rope Co Multiple conductor cable with tubular foam filler insulation
GB2069746A (en) * 1980-02-19 1981-08-26 Standard Telephones Cables Ltd Communications cables
CA1226047A (en) * 1984-08-10 1987-08-25 Steven D. Hartman Cable filler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106229088A (en) * 2016-09-21 2016-12-14 广东冠华传导科技有限公司 A kind of stranded equipment of shaped conductor and using method thereof
CN106229088B (en) * 2016-09-21 2018-01-19 广东冠华传导科技有限公司 A kind of shaped conductor is twisted equipment and its application method

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FR3017987A1 (en) 2015-08-28

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