FR2620375A1 - Method of manufacturing linear composite materials of variable cross-section and materials obtained by this method - Google Patents
Method of manufacturing linear composite materials of variable cross-section and materials obtained by this method Download PDFInfo
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- FR2620375A1 FR2620375A1 FR8712757A FR8712757A FR2620375A1 FR 2620375 A1 FR2620375 A1 FR 2620375A1 FR 8712757 A FR8712757 A FR 8712757A FR 8712757 A FR8712757 A FR 8712757A FR 2620375 A1 FR2620375 A1 FR 2620375A1
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- section
- sleeve
- reinforcing fibers
- variable
- liner
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
- B29C53/8091—Cutting the ends, surface finishing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/583—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features
- B29C53/585—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features the cross-section varying along their axis, e.g. tapered, with ribs, or threads, with socket-ends
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
- B29C53/8041—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
- B29C53/805—Applying axial reinforcements
- B29C53/8058—Applying axial reinforcements continuously
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/82—Cores or mandrels
- B29C53/821—Mandrels especially adapted for winding and joining
- B29C53/822—Single use mandrels, e.g. destructible, becoming part of the wound articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
- B29C70/865—Incorporated in coherent impregnated reinforcing layers, e.g. by winding completely encapsulated
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
- D04C1/02—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof made from particular materials
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C3/00—Braiding or lacing machines
- D04C3/48—Auxiliary devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/001—Profiled members, e.g. beams, sections
- B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/06—Rods, e.g. connecting rods, rails, stakes
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/02—Reinforcing materials; Prepregs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
PROCEDE DE FABRICATION DE MATERIAUX COMPOSITES LINEAIRES
A SECTION VARIABLE ET MATERIAUX OBTENUS SELON CE PROCEDE
La présente invention a pour objet un procédé de fabrication en continu de matériaux composites linéaires à section variable ainsi que les matériaux, du genre tubes, joncs, profilés ou analogues, obtenus selon ce procédé.PROCESS FOR PRODUCING LINEAR COMPOSITE MATERIALS
WITH VARIABLE SECTION AND MATERIALS OBTAINED ACCORDING TO THIS PROCESS
The subject of the present invention is a process for the continuous production of linear composite materials with variable cross-section as well as the materials, of the tube, rod, profile or similar type, obtained by this process.
Les matériaux composites linéaires rigides ou semi-rigides sont connus. Ils comprennent une âme pleine ou creuse, le long des génératrices- de laquelle s'étendent des fibres parallèles entourant complètement l'âme et réunies à celles-ci par une résine synthétique, par exemple du type polyester ou epoxy, l'ensemble étant inclus dans une couverture de protection. Les fibres longitudinales de renforcement sont actuellement des fibres de verre ou de carbone. L'avantage essentiel de tels composites est de présenter des caractéristiques mécaniques comparables à celles des aciers de haute qualité pour un poids environ 4 fois moindre que celui d'une tige d'acier de même section.Rigid or semi-rigid linear composite materials are known. They comprise a solid or hollow core, along the generatrices- from which extend parallel fibers completely surrounding the core and joined to these by a synthetic resin, for example of the polyester or epoxy type, the assembly being included in a protective cover. The longitudinal reinforcing fibers are currently glass or carbon fibers. The essential advantage of such composites is to have mechanical characteristics comparable to those of high quality steels for a weight approximately 4 times less than that of a steel rod of the same section.
De tels composites sont fabriqués par différents procédés, un de ceux-ci étant connu sous le nom de pultrusion". Il consiste à imprégner les fibres longitudinales de renfort sur l'âme ou noyau et à tirer l'ensemble à travers une filière chauffée qui provoque la réticulation du produit d'imprégnation. Mais, compte-tenu du passage en filière, ce procédé ne permet pas d'obtenir des sections variables.Such composites are produced by different processes, one of which is known as "pultrusion". It consists of impregnating the longitudinal reinforcing fibers on the core or core and pulling the assembly through a heated die which causes cross-linking of the impregnation product, but, given the passage through the die, this process does not allow variable sections to be obtained.
Un autre procédé, appelé enroulement filamentaire, ' ou enrubanage, consiste à enrouler des fils présentant un angle déterminé par rapport à une génératrice, sur un mandrin rigide. Ce procédé permet l'obtention de sections variables, à condition que la pente d'enrubanage soit toujours dans le même sens, mais il ne permet pas de fabrication continue et se trouve toujours limité par une longueur déterminée de produit. Another method, called filament winding, or wrapping, consists in winding wires having a determined angle relative to a generator, on a rigid mandrel. This process allows variable sections to be obtained, provided that the wrapping slope is always in the same direction, but it does not allow continuous manufacturing and is always limited by a determined length of product.
De plus, il est assez difficile dans ce procédé de placer des fils dans le sens de la longueur, de façon à obtenir un module de traction ou de flexion important.In addition, it is quite difficult in this process to place the wires lengthwise, so as to obtain a large tensile or flexural modulus.
Dans DE-OS-1 504 197, est décrit un procédé pour la préparation de barreaux, de profilés et de tubes, à partir de matières composites fibreuses dans lequel des fibres sont assemblées en continu à partir d'une ourdisseuse, puis envoyées dans un auget pouvant être chauffé et rempli par une résine synthétique, l'ensemble étant formé et régularisé à travers des filières. Après l'imprégnation et le formage, la matière fibreuse est enveloppée avec une matière fibreuse retordue et le composite obtenu passe à travers un ou plusieurs fours# de durcissement. Mais, comme indiqué précédemment, la présence d'une filière s'oppose à l'obtention de corps à section variable.DE-OS-1 504 197 describes a process for the preparation of bars, profiles and tubes, from fibrous composite materials in which fibers are assembled continuously from a warping machine, then sent to a bucket can be heated and filled with a synthetic resin, the assembly being formed and regularized through dies. After impregnation and forming, the fibrous material is wrapped with a twisted fibrous material and the composite obtained passes through one or more curing ovens. But, as indicated above, the presence of a die precludes obtaining bodies with variable section.
La présente invention a pour objet de pallier les inconvénients des dispositifs connus et de permettre la fabrication en continu de tubes, joncs, ou analogues, présentant des sections variables.The object of the present invention is to overcome the drawbacks of known devices and to allow the continuous production of tubes, rods, or the like, having variable sections.
L'obtention de sections variables peut être justifiée par des nécessités de construction, notamment lorsqu'il s'agit de renforcer certaines zones du jonc, mais elle a pour but essentiel de permettre un assemblage aisé bout à bout de tubes ou joncs, réunion qui nécessitait auparavant la terminaison des éléments par des culots ou embouts, opération supplémentaire obérant les prix de revient.Obtaining variable sections can be justified by construction needs, especially when it comes to reinforcing certain areas of the rod, but its essential purpose is to allow easy assembly end to end of tubes or rods, meeting which previously required the termination of the elements with caps or end pieces, an additional operation which reduces cost prices.
Selon la présente invention, le procédé de fabrication de tubes à section variable, comprenant un manchon longiligne autour duquel s'étendent parallèlement des fibres de renforcement, l'ensemble étant inclus dans une couverture, est caractérisé en ce que les fibres de renforcement, imprégnées par une résine en excès, sont déposées autour d'un manchon à section variable, ltensemble étant revêtu d'une couverture tressée posée sous tension et tiré à travers des fours polymérisant la résine.According to the present invention, the method of manufacturing tubes with variable cross-section, comprising a slender sleeve around which extend reinforcing fibers in parallel, the assembly being included in a cover, is characterized in that the reinforcing fibers, impregnated by an excess resin, are deposited around a variable section sleeve, the assembly being coated with a braided cover placed under tension and drawn through ovens polymerizing the resin.
Le tressage de la couverture extérieure effectué sous tension provoque une migration ou exsudation de la résine, de l'intérieur du corps longiligne vers l'extérieur de celui-ci, de sorte que la tresse extérieure soit elle-même complètement enrobée. Le tressage s'effectue naturellement, quelle que soit la section du manchon. 1-1 peut être piloté par un détecteur de variation de section de manière à ce que le pas de tressage reste constant.The braiding of the outer cover carried out under tension causes migration or exudation of the resin, from the interior of the elongate body towards the outside thereof, so that the outer braid is itself completely coated. Braiding takes place naturally, regardless of the section of the sleeve. 1-1 can be controlled by a section variation detector so that the braiding pitch remains constant.
D'autres caractéristiques et avantages de la présente invention apparaitront au cours de la description qui va suivre de deux modes particuliers de réalisation, donnés uniquement à titre d'exemples non limitatifs, en regard des dessins qui représentent - la figure.1, une vue en coupe partielle d'un tube obtenu par
le procédé selon l'invention - la figure 2, un schéma de principe du raccordement de deux
longueurs de tubes, permettant la réalisation d'embouts de
reprise d'effort à chaque extrémité - la figure 3, une vue en coupe partielle du profilé obtenu en
continu, avant qu'il ne soit coupé en vue d'une liaison
telle que celle qui est représentée sur la figure 2 - les figures 4 et 5, un autre mode de réalisation, les tubes
présentant des embouts coniques - la figure 6, un schéma de principe d'une installation
permettant la mise en oeuvre du procédé.Other characteristics and advantages of the present invention will appear during the following description of two particular embodiments, given only by way of nonlimiting examples, with reference to the drawings which represent - FIG. 1, a view in partial section of a tube obtained by
the method according to the invention - Figure 2, a block diagram of the connection of two
lengths of tubes, allowing the realization of end caps
force recovery at each end - Figure 3, a partial sectional view of the profile obtained in
continuous, before it is cut for bonding
as shown in Figure 2 - Figures 4 and 5, another embodiment, the tubes
with conical tips - Figure 6, a block diagram of an installation
allowing the implementation of the method.
La figure 1 représente, en coupe verticale partielle, un tube obtenu par le procédé selon l'invention. Il se présente sous la forme d'une structure creuse enveloppée dans une couche de résine 11. A l'intérieur de cette couche de résine, on trouve, de l'extérieur vers l'intérieur, une tresse 12 qui maintient et enserre les fibres longitudinales 13 de renforcement, ces fibres 13 constituées par exemple par des fibres de verre ou des fibres de carbone, étant solidarisées par la résine 11 et collées sur le manchon 14 ou "liner", le liner étant réalisé dans un matériau léger de faible épaisseur qui ne nécessite pas de résistance mécanique particulière.Les fils longitudinaux 13 sont disposés régulièrement tout autour du liner 14, et la tresse 12 vient serrer ces fils longitudinaux contre le liner 14 et fait simultanément remonter en surface l'excédent de résine 11, de sorte que sans filière, on obtienne un état de surface convenable, la surface externe reproduisant la configuration du liner.Figure 1 shows, in partial vertical section, a tube obtained by the method according to the invention. It is in the form of a hollow structure wrapped in a resin layer 11. Inside this resin layer, there is, from the outside to the inside, a braid 12 which holds and grips the fibers. longitudinal 13 of reinforcement, these fibers 13 constituted for example by glass fibers or carbon fibers, being joined by the resin 11 and bonded to the sleeve 14 or "liner", the liner being made of a light material of small thickness which does not require any particular mechanical resistance. The longitudinal wires 13 are regularly arranged all around the liner 14, and the braid 12 comes to clamp these longitudinal wires against the liner 14 and simultaneously causes the excess resin 11 to rise to the surface, so that without a die, a suitable surface finish is obtained, the external surface reproducing the configuration of the liner.
Dans l'exemple représenté sur la figure 1, le liner 14 est constitué par un tube creux qui est avantageusement à section circulaire. Mais, comme indiqué ci-dessus, l'avantage du procédé selon l'invention est de permettre l'obtention d'un composite à section variable. Les figures 2 et 3 montrent un tel composite qui est fabriqué en continu. On retrouve sur cette figure la structure décrite ci-dessus, à savoir le liner 14, les fibres de renforcement 13, la tresse 12 et la résine 11.In the example shown in Figure 1, the liner 14 is constituted by a hollow tube which is advantageously of circular section. However, as indicated above, the advantage of the method according to the invention is that it makes it possible to obtain a composite with variable section. Figures 2 and 3 show such a composite which is manufactured continuously. This structure shows the structure described above, namely the liner 14, the reinforcing fibers 13, the braid 12 and the resin 11.
Comme celà apparait sur la figure 3, il est possible, grâce à l'opération de tressage, d'obtenir une déformation régulière des fibres 13 qui suivent naturellement le contour extérieur du manchon ou liner 14. Lorsque le diamètre du liner augmenté, l'angle de tressage 15 varie, mais, on peut pallier ce phénomène en asservissant la vitesse du métier à tresser ou du tracteur, au diamètre extérieur du liner qui est facilement contrôlée optiquement. Ainsi, malgré la variation du diamètre, et grâce à l'opération de tressage, on obtient une bonne imprégnation des fibres et l'absence de bulles d'air à l'intérieur du produit. On retrouve également l'avantage d'une remontée de la résine en surface, ce qui donne à la surface extérieure du composite un aspect régulier et exempt de fibres de renfort. As shown in Figure 3, it is possible, thanks to the braiding operation, to obtain a regular deformation of the fibers 13 which naturally follow the outer contour of the sleeve or liner 14. When the diameter of the liner increased, the braiding angle 15 varies, but this phenomenon can be overcome by slaving the speed of the braiding loom or of the tractor to the outside diameter of the liner which is easily optically controlled. Thus, despite the variation in diameter, and thanks to the braiding operation, a good impregnation of the fibers and the absence of air bubbles inside the product are obtained. There is also the advantage of a rise of the resin on the surface, which gives the exterior surface of the composite a regular appearance and free of reinforcing fibers.
Un composite tel que celui qui est représenté sur la figure 3 peut être coupé en sortie de la machine de fabrication, par exemple selon les plans A et B de la figure 3. L'extrémité coupée selon le plan B constitue alors une partie femelle 17 à l'intérieur de laquelle peut être introduite une partie mâle 16, comme celà apparat sur la figure 2. Dans le cas d'une structure démontable, la partie mâle est simplement insérée dans la partie femelle. Dans le cas d'une structure permanente, les deux pièces sont fixées par collage. Le problème de reprise d'efforts par collage d'embout à chaque extrémité, est ainsi simplement résolu.A composite such as that shown in FIG. 3 can be cut at the outlet of the manufacturing machine, for example according to planes A and B in FIG. 3. The end cut along plane B then constitutes a female part 17 inside which a male part 16 can be introduced, as appears in FIG. 2. In the case of a removable structure, the male part is simply inserted into the female part. In the case of a permanent structure, the two parts are fixed by gluing. The problem of resumption of forces by bonding of a nozzle at each end is thus simply resolved.
Un autre exemple d'application est représenté sur les figures 4 et 5. Dans ce mode de réalisation, une pièce biconique 18 est insérée à l'intérieur du faisceau de fibres de renforcement 13 qui, dans l'exemple représenté, constitue l'âme du câble, ces fibres étant, comme précédemment, maintenues par une tresse qui les comprime radialement. La pièce biconique 18 provoque une double déformation conique sur laquelle le tressage peut éventuellement être modifié en vue d'obtenir une densification des fibres de la tresse 12. Il est également possible de modifier la valeur de l'angle de tressage 15 pour obtenir des caractéristiques mécaniques particulières en cet endroit.Si l'on opère une coupe dans le plan milieu bicône 18, on obtient une barre 19 (représentée sur la figure 4) terminée par deux extrémités coniques 18 sur lesquelles peuvent être adaptés des embouts de fixation particulièrement résistants, et capables de reprendre la résistance en traction de la barre par effet de coincement.Another example of application is shown in FIGS. 4 and 5. In this embodiment, a biconical part 18 is inserted inside the bundle of reinforcing fibers 13 which, in the example shown, constitutes the core of the cable, these fibers being, as previously, held by a braid which compresses them radially. The biconical part 18 causes a double conical deformation on which the braiding can optionally be modified in order to obtain a densification of the fibers of the braid 12. It is also possible to modify the value of the braiding angle 15 to obtain characteristics Particular mechanical in this location. If a cut is made in the bicone middle plane 18, a bar 19 (shown in FIG. 4) is obtained terminated by two conical ends 18 on which particularly resistant fixing ends can be adapted, and able to recover the tensile strength of the bar by jamming effect.
Cette application est extrêmement importante dans le domaine des barres en matériaux composites présentant des caractéristiques de résistance mécanique élevées, destinées notamment au remplacement des tiges métalliques lorsque se posent des problèmes de corrosion.This application is extremely important in the field of bars made of composite materials having high mechanical strength characteristics, intended in particular for replacing metal rods when corrosion problems arise.
La figure 6 représente une installation pour la mise en oeuvre du procédé selon l'invention. Les fils 13 provenant d'un cantre, sont choisis dans la gamme des fils habituellement utilisés dans l'industrie des composites (verre, carbone, "Kevlar" (Marque déposée) etc..., connus pour leurs caractéristiques de résistance en traction.FIG. 6 represents an installation for implementing the method according to the invention. The wires 13 coming from a creel are chosen from the range of wires usually used in the composites industry (glass, carbon, "Kevlar" (registered trademark) etc ..., known for their characteristics of tensile strength.
Dans un' premier temps, les fils ou fibres 13 sont amenés à l'intérieur d'un bac 2 rempli d'une résine thermodurcissable du type epoxy ou polyester par exemple, ou éventuellement thermoplastique. C'est la résine appliquée qui va donner au jonc sa rigidité en combinaison avec la structure des fils de renforcement. Ils sont à dessein imprégnés en excès par la résine. A la sortie du bac 2, les fils 13 traversent un appareil écarteur 3 permettant de définir une zone 1 d'introduction d'un liner ou analogue à l'intérieur du faisceau de fils 13. Le faisceau est ensuite resserré et pénètre dans un métier à tresser 4 qui tresse une gaine 12 autour des fils parallèles dont la disposition est éventuellement modifiée par une âme intérieure 5' introduite par la zone d'introduction 1.A la sortie du métier à tresser 4, se trouve un (ou deux) four 6 destiné à provoquer la réticulation de la résine, et un ou plusieurs racleurs 7 montés de manière souple, de manière à pouvoir suivre le profil du composite destiné à éliminer, si nécessaire, l'excédent de résine. Un tracteur 8 entraine le système à vitesse continue ou éventuellement asservi à la vitesse du métier à tresser. Si nécessaire, le produit est coupé comme indiqué précédemment en 9.At first, the wires or fibers 13 are brought inside a tank 2 filled with a thermosetting resin of the epoxy or polyester type for example, or possibly thermoplastic. It is the applied resin that will give the rod its rigidity in combination with the structure of the reinforcing threads. They are purposely impregnated with excess resin. At the outlet of the tank 2, the wires 13 pass through a spacer device 3 making it possible to define a zone 1 for introducing a liner or the like inside the bundle of wires 13. The bundle is then tightened and enters a loom to be braided 4 which braids a sheath 12 around the parallel wires, the arrangement of which is optionally modified by an inner core 5 ′ introduced by the introduction zone 1. At the exit of the braiding loom 4, there is one (or two) oven 6 intended to cause the crosslinking of the resin, and one or more scrapers 7 mounted in a flexible manner, so as to be able to follow the profile of the composite intended to remove, if necessary, the excess resin. A tractor 8 drives the system at a continuous speed or possibly controlled by the speed of the braiding machine. If necessary, the product is cut as indicated previously in 9.
Afin d'obtenir une répartition constante des fibres de la tresse 12, on prévoit, de préférence dans la zone 1 un détecteur optique 5 de section connecté à un étage de commande 10 pouvant agir, séparément ou simultanément sur la vitesse de la tresseuse 4, sur la vitesse du tracteur 8, et sur le couteau 9, afin de rendre automatique le fonctionnement de l'ensemble. In order to obtain a constant distribution of the fibers of the braid 12, provision is preferably made in zone 1 for an optical detector 5 of section connected to a control stage 10 which can act, separately or simultaneously on the speed of the braider 4, on the speed of the tractor 8, and on the knife 9, in order to make the operation of the assembly automatic.
Il est ainsi possible de fabriquer à la continue, des tubes en matériaux composites présentant les avantages suivants - inertie chimique contrôlée en fonction du choix du matériau
constituant le manchon ou "liner" intérieur - obtention d'un haut module de traction et de flexion en
choisissant des fibres 13 de renfort à haut module et en
calculant les quantités nécessaires - absence de fibres de renfort à l'extérieur du produit et
obtention d'une bonne couverture de résine - bonne densification des fibres par la pression de la tresse
durant l'opération de réticulation.It is thus possible to manufacture continuously, tubes of composite materials having the following advantages - controlled chemical inertia depending on the choice of material
constituting the inner sleeve or "liner" - obtaining a high modulus of traction and bending in
choosing high modulus reinforcing fibers 13 and
calculating the quantities required - absence of reinforcing fibers outside the product and
obtaining a good resin cover - good densification of the fibers by the braid pressure
during the crosslinking operation.
Il va de soi que de nombreuses variantes peuvent être introduites notamment par substitution de moyens techniquement équivalents sans pour autant sortir du cadre de l'invention. It goes without saying that many variants can be introduced in particular by substitution of technically equivalent means without departing from the scope of the invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8712757A FR2620375B1 (en) | 1987-09-15 | 1987-09-15 | PROCESS FOR PRODUCING LINEAR COMPOSITE MATERIALS WITH VARIABLE SECTION AND MATERIALS OBTAINED ACCORDING TO THIS PROCESS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8712757A FR2620375B1 (en) | 1987-09-15 | 1987-09-15 | PROCESS FOR PRODUCING LINEAR COMPOSITE MATERIALS WITH VARIABLE SECTION AND MATERIALS OBTAINED ACCORDING TO THIS PROCESS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2620375A1 true FR2620375A1 (en) | 1989-03-17 |
| FR2620375B1 FR2620375B1 (en) | 1990-03-23 |
Family
ID=9354909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8712757A Expired - Fee Related FR2620375B1 (en) | 1987-09-15 | 1987-09-15 | PROCESS FOR PRODUCING LINEAR COMPOSITE MATERIALS WITH VARIABLE SECTION AND MATERIALS OBTAINED ACCORDING TO THIS PROCESS |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2620375B1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990015708A1 (en) * | 1989-06-15 | 1990-12-27 | Man Technologie Aktiengesellschaft | Process for manufacturing composite components |
| EP0442092A2 (en) * | 1990-02-14 | 1991-08-21 | MAN Ceramics GmbH | Method of manufacturing fibre reinforced products |
| EP0449779A2 (en) * | 1990-03-30 | 1991-10-02 | Martin Ullmann | Process and device for production of a hollow object |
| WO1994017979A1 (en) * | 1993-02-12 | 1994-08-18 | Dipl.-Ing. Henn Ges.M.B.H. & Co. Kg | Process and device for manufacturing hoses with connection elements |
| EP1739219A1 (en) * | 2005-07-02 | 2007-01-03 | Bayerische Motorenwerke Aktiengesellschaft | Braiding method and apparatus |
| EP2447051A1 (en) * | 2010-10-26 | 2012-05-02 | REHAU AG + Co | Method for manufacturing plastic profiles reinforced by continuous fibre made of thermoplastics |
| US11447190B2 (en) * | 2020-07-28 | 2022-09-20 | Toyota Jidosha Kabushiki Kaisha | Structure for reinforcing framework member in vehicle |
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| FR1170827A (en) * | 1957-01-10 | 1959-01-19 | hollow elements formed by winding filaments and method for their manufacture | |
| LU55263A1 (en) * | 1967-01-20 | 1968-03-28 | ||
| DE1504197A1 (en) * | 1965-12-21 | 1969-09-25 | Akad Wissenschaften Ddr | Process and device for the production of rods, profiles and pipes from fiber-reinforced plastics in a vertical direction |
| DE2205604A1 (en) * | 1972-02-07 | 1973-08-23 | Rudolf Barainsky | METHOD AND DEVICE FOR THE CONTINUOUS MANUFACTURING OF FIBER-REINFORCED CAST RESIN PIPES |
| FR2222199A1 (en) * | 1973-03-21 | 1974-10-18 | Nat Res Dev | |
| US4138285A (en) * | 1976-05-07 | 1979-02-06 | Fiber Glass Systems, Inc. | Filament rod construction and method of forming the same |
| EP0017010A2 (en) * | 1979-03-21 | 1980-10-15 | Bayer Ag | Fibre-reinforced composite articles with inserts and process for their production |
| EP0102393A1 (en) * | 1981-05-29 | 1984-03-14 | USUI, Fumio | Method and apparatus for manufacturing hollow article |
| EP0144618A1 (en) * | 1983-12-13 | 1985-06-19 | Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung | Winding machine for winding cylindrical components |
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1987
- 1987-09-15 FR FR8712757A patent/FR2620375B1/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1170827A (en) * | 1957-01-10 | 1959-01-19 | hollow elements formed by winding filaments and method for their manufacture | |
| DE1504197A1 (en) * | 1965-12-21 | 1969-09-25 | Akad Wissenschaften Ddr | Process and device for the production of rods, profiles and pipes from fiber-reinforced plastics in a vertical direction |
| LU55263A1 (en) * | 1967-01-20 | 1968-03-28 | ||
| DE2205604A1 (en) * | 1972-02-07 | 1973-08-23 | Rudolf Barainsky | METHOD AND DEVICE FOR THE CONTINUOUS MANUFACTURING OF FIBER-REINFORCED CAST RESIN PIPES |
| FR2222199A1 (en) * | 1973-03-21 | 1974-10-18 | Nat Res Dev | |
| US4138285A (en) * | 1976-05-07 | 1979-02-06 | Fiber Glass Systems, Inc. | Filament rod construction and method of forming the same |
| EP0017010A2 (en) * | 1979-03-21 | 1980-10-15 | Bayer Ag | Fibre-reinforced composite articles with inserts and process for their production |
| EP0102393A1 (en) * | 1981-05-29 | 1984-03-14 | USUI, Fumio | Method and apparatus for manufacturing hollow article |
| EP0144618A1 (en) * | 1983-12-13 | 1985-06-19 | Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung | Winding machine for winding cylindrical components |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990015708A1 (en) * | 1989-06-15 | 1990-12-27 | Man Technologie Aktiengesellschaft | Process for manufacturing composite components |
| EP0442092A2 (en) * | 1990-02-14 | 1991-08-21 | MAN Ceramics GmbH | Method of manufacturing fibre reinforced products |
| EP0442092A3 (en) * | 1990-02-14 | 1992-12-02 | Man Technologie Aktiengesellschaft | Method of manufacturing fibre reinforced products |
| EP0523471A1 (en) * | 1990-02-14 | 1993-01-20 | MAN Ceramics GmbH | Method of manufacturing fibre reinforced products |
| EP0449779A2 (en) * | 1990-03-30 | 1991-10-02 | Martin Ullmann | Process and device for production of a hollow object |
| EP0449779A3 (en) * | 1990-03-30 | 1992-04-15 | Martin Ullmann | Process and device for production of a hollow object |
| WO1994017979A1 (en) * | 1993-02-12 | 1994-08-18 | Dipl.-Ing. Henn Ges.M.B.H. & Co. Kg | Process and device for manufacturing hoses with connection elements |
| EP1739219A1 (en) * | 2005-07-02 | 2007-01-03 | Bayerische Motorenwerke Aktiengesellschaft | Braiding method and apparatus |
| EP2447051A1 (en) * | 2010-10-26 | 2012-05-02 | REHAU AG + Co | Method for manufacturing plastic profiles reinforced by continuous fibre made of thermoplastics |
| US11447190B2 (en) * | 2020-07-28 | 2022-09-20 | Toyota Jidosha Kabushiki Kaisha | Structure for reinforcing framework member in vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2620375B1 (en) | 1990-03-23 |
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