FR2847564A1 - Procedure and machine for making cylindrical composition components uses centrifuging in high-speed cylindrical mandrel fed with resin and reinforcing filaments - Google Patents
Procedure and machine for making cylindrical composition components uses centrifuging in high-speed cylindrical mandrel fed with resin and reinforcing filaments Download PDFInfo
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- FR2847564A1 FR2847564A1 FR0214767A FR0214767A FR2847564A1 FR 2847564 A1 FR2847564 A1 FR 2847564A1 FR 0214767 A FR0214767 A FR 0214767A FR 0214767 A FR0214767 A FR 0214767A FR 2847564 A1 FR2847564 A1 FR 2847564A1
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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
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/32—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
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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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
- B29C41/042—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould by rotating a mould around its axis of symmetry
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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
- B29C53/72—Winding and joining, e.g. winding spirally helically using external forming surfaces
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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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/151—Coating hollow 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
- B29K2105/10—Cords, strands or rovings, e.g. oriented cords, strands or rovings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
Machine permettant de fabriquer des pièces clindriques en composite parMachine for manufacturing composite cylindrical parts by
centrifugation et en enroulant une nappe continue de fils de renfort. centrifugation and by winding a continuous layer of reinforcing threads.
Domaine techniqueTechnical area
La présente invention concerne un perfectionnement apporté aux machines de fabrication de pièces cylindriques en composite utilisant le principe de centrifugation. Ce perfectionnement consiste à permettre la dépose d'une nappe 10 continue de fils de renfort à l'intérieur d'un tube en rotation que l'on appellera dans la suite du document mandrin. Ce principe de dépose de renfort est caractéristique de l'enroulement " filamentaire " mais celle-ci est effectuée sur la surface extérieure du mandrin. Le principe de la présente invention est donc de réaliser cet enroulement de fils continus de renfort à l'intérieur d'un mandrin en rotation. The present invention relates to an improvement made to machines for manufacturing cylindrical composite parts using the principle of centrifugation. This improvement consists in allowing the deposition of a continuous ply 10 of reinforcing threads inside a rotating tube which will be called in the following document the mandrel. This reinforcement removal principle is characteristic of the "filamentary" winding, but this is carried out on the external surface of the mandrel. The principle of the present invention is therefore to produce this winding of continuous reinforcing wires inside a rotating mandrel.
L'idée est donc de combiner les principes des procédés de centrifugation et d'enroulement filamentaire afin d'en cumuler les avantages. Ces avantages étant principalement pour la centrifugation: Des états de surface interne et externe très lisses; * Un parfait dégazage (ou " débullage ") de la stratification améliorant l'adhérence des renforts à la matrice et donc les performances mécaniques du matériau; 25. Les matériaux de renfort étant généralement plus denses que la résine, une répartition des matériaux allant dans le sens d'une meilleure étanchéité aux fluides, la concentration de résine étant plus forte sur la face interne du tube; * Une tension homogène sur toute la longueur des fils de renfort permettant une bonne prise en charges des contraintes; * Un démoulage facile car le retrait d à la polymérisation (environ 1 à 2% pour une résine polyester) s'opère dans le bon sens; ò La possibilité de fermer aisément aux extrémités le mandrin afin d'isoler l'environnement extérieur des émissions de solvant tel que le styrène et de traiter plus facilement ce type de rejet; The idea is therefore to combine the principles of the centrifugation and filament winding processes in order to combine the advantages. These advantages being mainly for centrifugation: Very smooth internal and external surface conditions; * Perfect degassing (or "bubbling") of the stratification improving the adhesion of the reinforcements to the matrix and therefore the mechanical performance of the material; 25. The reinforcing materials being generally denser than the resin, a distribution of the materials going in the direction of better sealing against fluids, the concentration of resin being higher on the internal face of the tube; * A homogeneous tension over the entire length of the reinforcing threads allowing good handling of stresses; * Easy release because the removal due to polymerization (about 1 to 2% for a polyester resin) is done in the right direction; ò The possibility of easily closing the mandrel at the ends in order to isolate the external environment from solvent emissions such as styrene and to deal more easily with this type of rejection;
* La possibilité de faire une structure sandwich. * The possibility of making a sandwich structure.
pour l'enroulement " filamentaire " De part la continuité des fils de renfort, l'obtention de performances mécaniques optimales. Techniques antérieures Pour fabriquer des pièces de révolution en composite, on utilise donc généralement for the "filamentary" winding Due to the continuity of the reinforcing wires, obtaining optimal mechanical performance. Previous techniques In order to manufacture composite composite revolution parts, it is therefore generally used
deux procédés industriels qui sont: la centrifugation et l'enroulement filamentaire. two industrial processes which are: centrifugation and filament winding.
Pour la centrifugation, le principe peut être le suivant: Après avoir déposé un renfort à l'intérieur du tube sous forme d'un tissu de 15 renforts aux fibres orientées appeler "rowing"; le mandrin est mis en rotation rapide, puis la résine est introduite progressivement à l'aide d'un dispositif d'épandage. Enfin le mandrin est mis en rotation très rapide pour assurer le compactage, l'imprégnation de la résine et le dégazage. La polymérisation s'opère à vitesse de rotation plus faible. Celle-ci peut être 20 accélérée en chauffant le moule ou en insufflant de l'air chaud. L'opération For centrifugation, the principle can be as follows: After having deposited a reinforcement inside the tube in the form of a fabric of reinforcements with oriented fibers called "rowing"; the mandrel is put into rapid rotation, then the resin is introduced gradually using a spreading device. Finally the mandrel is rotated very quickly to ensure compaction, impregnation of the resin and degassing. The polymerization takes place at a lower speed of rotation. This can be accelerated by heating the mold or by blowing hot air. The operation
peut être répétée plusieurs fois afin de disposer plusieurs couches ou de réaliser une structure sandwich. can be repeated several times in order to have several layers or to create a sandwich structure.
Ce processus peut être simplifier par la dépose en simultanée de fibres de This process can be simplified by the simultaneous deposit of fibers
renfort coupées et de résine.cut reinforcement and resin.
Exemple de fabrication: Réservoir pétrolier intégrant une âme gravillonnaire Exemple de vitesse de rotation nécessaire: diamètre 200 par 1500 et épaisseur de 4 mm Manufacturing example: Petroleum tank incorporating a gravelly core Example of required rotation speed: diameter 200 by 1500 and thickness of 4 mm
* Introduction de la résine: 500 tr/min. * Resin introduction: 500 rpm.
* Imprégnation: 3 mm à 1700 tr/min. * Impregnation: 3 mm at 1700 rpm.
Pour l'enroulement filamentaire le principe peut être le suivant: Un mandrin constituant le moule sur lequel se forme la pièce est mis en rotation sur un portique de fabrication appelé vireur. Cette vitesse de rotation permet une vitesse d'enroulement d'une nappe de fils de renforts de l'ordre d'un mètre par seconde. La nappe de fils est enroulée en plusieurs couches sur le mandrin et est distribuée à l'aide d'un chariot d'alimentation. Ce chariot assure l'amené des fils des dévidoirs des bobines, la constitution de 10 la nappe, la tension, son imprégnation par de la résine et enfin sa dépose le For the filament winding the principle can be as follows: A mandrel constituting the mold on which the part is formed is rotated on a gantry of manufacture called tacker. This speed of rotation allows a winding speed of a layer of reinforcing threads of the order of one meter per second. The ply of threads is wound in several layers on the mandrel and is distributed using a feed cart. This carriage ensures the supply of the wires from the reels of the reels, the constitution of the sheet, the tension, its impregnation with resin and finally its removal.
long du mandrin. Ce chariot travaille comme celui d'un tour métallurgique en plusieurs passes et avec une avance qui est fonction de la largeur de la nappe. Après polymérisation le mandrin doit pouvoir se rétracter afin de libérer la pièce. along the mandrel. This carriage works like that of a metallurgical lathe in several passes and with an advance which is a function of the width of the sheet. After polymerization, the mandrel must be able to retract in order to release the part.
Différentes sophistications de ce principe existent qui permettent des enroulements hélicodaux ou des enroulements sur des pièces aux surfaces complexes telles que des réservoirs de fusée ou des pales d'hélicoptère. Different refinements of this principle exist which allow helical windings or windings on parts with complex surfaces such as rocket tanks or helicopter blades.
Ce principe permet la fabrication de très grandes pièces. Il permet surtout This principle allows the production of very large parts. Above all, it allows
d'atteindre des caractéristiques mécaniques très élevées. achieve very high mechanical characteristics.
Les fils de renfort utilisés doivent être non torsadés et sont appelé communément " stratifil ", leur titre (masse en g au km) et de l'ordre de The reinforcing threads used must be untwisted and are commonly called "roving", their title (mass in g per km) and of the order of
2200 tex.2200 tex.
Exposé de l'invention Le principe de l'invention consiste à combiner les principes des deux procédés précités en créant un dispositif d'amené de fils et de résines capable: * de stocker les bobines de renfort, * de constituer une nappe ou un ensemble de fils et de les amener dans une machine de centrifugation; * de guider et déposer les fils sur la surface interne du mandrin par enroulement, Disclosure of the invention The principle of the invention consists in combining the principles of the two aforementioned methods by creating a device for feeding wires and resins capable of: * storing the reinforcement coils, * constituting a sheet or an assembly wires and bring them into a centrifuge machine; * guide and deposit the wires on the internal surface of the mandrel by winding,
* d'amener la résine à la demande. * bring the resin on demand.
Pour cela ce dispositif d'amené de fils et de résine que l'on appellera dans la suite du document " dispositif d'alimentation rotatif ", doit pouvoir fonctionner dans le référentiel tournant du mandrin en rotation. Ce dispositif doit tourner à une vitesse proche du mandrin. Ce décalage de vitesse correspond dans ce référentiel tournant à la vitesse utilisée pour enrouler une nappe de fils de renfort lors d'un procédé d'enroulement filamentaire. Ce décalage de vitesse entre deux machines tournantes peut être facilement réalisé 10 électroniquement par un asservissement par variation de fréquence des For this, the wire and resin supply device which will be called in the following document "rotary feeder", must be able to operate in the rotating reference frame of the rotating mandrel. This device must rotate at a speed close to the mandrel. This speed offset corresponds in this frame of reference rotating to the speed used to wind a sheet of reinforcing threads during a filament winding process. This speed shift between two rotating machines can be easily achieved electronically by servo-control by frequency variation of the
alimentations des moteurs d'entraînement. power supplies for drive motors.
La fabrication d'une pièce simple s'opère alors de la manière suivante: 1. Le mandrin est mis en rotation; 2. Une première couche de résine est répandue par le dispositif d'alimentation rotatif lui-même en rotation à un delta de vitesse donné par rapport à la vitesse de rotation du mandrin. Ce delta correspond à la vitesse d'enroulement de la nappe de fils de renfort à l'intérieur du mandrin; 3. Puis les fils sont amenés et déposés en couche successive sur la surface interne du mandrin ainsi qu'un apport régulé de résine; 4. Lorsque l'épaisseur voulue de stratifié est atteinte, le dispositif d'alimentation rotatif est désengagé du tube; 5. Le mandrin est mis en rotation rapide de compactage, d'imprégnation de résine et de dégazage; 6. La polymérisation est réalisée en rotation plus lente éventuellement aidée The manufacturing of a simple part is then carried out as follows: 1. The mandrel is rotated; 2. A first layer of resin is spread by the rotary feeder itself in rotation at a given speed delta relative to the speed of rotation of the mandrel. This delta corresponds to the winding speed of the ply of reinforcing threads inside the mandrel; 3. Then the wires are brought and deposited in a successive layer on the internal surface of the mandrel as well as a regulated supply of resin; 4. When the desired thickness of laminate is reached, the rotary feeder is disengaged from the tube; 5. The mandrel is set in rapid rotation for compaction, resin impregnation and degassing; 6. The polymerization is carried out in slower rotation possibly assisted
par un chauffage.by heating.
Les avantages principaux de cette innovation sont: * Une fermeture possible des extrémités lors du dépôt de résine permettant de 30 réduire les émissions de styrène (dispositif de chauffage et d'évacuation possible des gaz dans l'axe) The main advantages of this innovation are: * A possible closure of the ends during the deposition of resin making it possible to reduce the styrene emissions (heating and possible gas evacuation device in the axis)
La centrifugation et des densités des matériaux utilisés donnant une concentration de résine plus forte à l'intérieur du tube qu'en périphérie et donc une meilleure étanchéité. The centrifugation and densities of the materials used giving a higher resin concentration inside the tube than at the periphery and therefore better sealing.
Un dégazage et compactage important donnant de bonne caractéristique mécanique; U Une tension parfaitement homogène des fils sur toute leur longueur; * La possibilité d'ajouter une âme (structure sandwich) avec une dépose filamentaire; Significant degassing and compaction giving good mechanical characteristics; U A perfectly homogeneous tension of the threads over their entire length; * The possibility of adding a core (sandwich structure) with a filamentary deposit;
* La possibilité d'ajouter des noyaux dans le mandrin afin de réaliser des réservations, moyennant le réglage de l'équilibrage des ensembles en rotation. * The possibility of adding cores in the mandrel in order to make reservations, by adjusting the balancing of the rotating assemblies.
Description sommaire des dessinsBrief description of the drawings
L'invention et les avantages qui en ressortent seront mieux compris grâce à l'exemple de réalisation qui est donné à titre indicatif mais non limitatif, et qui est illustré par les schémas annexés dans lesquels La figure 1 est une vue d'ensemble d'une installation permettant de réaliser un enroulement filamentaire à l'intérieur d'un mandrin d'une machine de centrifugation; The invention and the advantages which emerge therefrom will be better understood thanks to the embodiment which is given by way of indication but not limitation, and which is illustrated by the appended diagrams in which FIG. 1 is an overview of an installation for making a filament winding inside a mandrel of a centrifuge machine;
La figure 2 est une vue de détail du dispositif d'alimentation rotatif permettant d'amener la résine et les fils sur la face interne du mandrin en rotation d'une machine de centrifugation. Figure 2 is a detail view of the rotary feeder for bringing the resin and the son on the inner face of the rotating mandrel of a centrifuge machine.
Manière de réaliser l'inventionWay of realizing the invention
En se reportant aux figures annexées, le dispositif conforme à l'invention est destiné à enrouler une nappe de fils de renfort à l'intérieur du mandrin d'une machine de centrifugation. Referring to the appended figures, the device according to the invention is intended to wind a sheet of reinforcing threads inside the mandrel of a centrifuge machine.
D'une manière générale, il en ressort de la figure 1, une telle ligne de production se compose donc essentiellement d'une machine de centrifugation, désignée par la référence générale (1) permettant de former la pièce cylindrique. Cette machine est constituée principalement d'un mandrin mis en rotation sur des galets et du dispositif d'alimentation rotatif, désignée par la référence générale (2) permettant In general, it emerges from Figure 1, such a production line therefore essentially consists of a centrifugation machine, designated by the general reference (1) for forming the cylindrical part. This machine consists mainly of a mandrel rotated on rollers and the rotary feeder, designated by the general reference (2) allowing
d'amener la résine et les fils de renfort et d'enrouler ces derniers sur la surface interne du mandrin. to bring the resin and the reinforcing wires and to wind them on the internal surface of the mandrel.
Le dispositif d'alimentation rotatif représenté en détail par la figure 2 est constitué principalement d'un arbre creux monté sur un équipage mobile (4) permettant les mouvements de chariotage à l'intérieur du mandrin (5), Cet arbre creux est équipé d'un barillet (6) permettant de stocker un nombre de bobines (7) de fils de renfort (sur la figure 2 huit bobines sont représentées). On peut envisager plusieurs barillets (6) en série sur le même arbre creux (3) afin d'augmenter le The rotary feed device shown in detail in Figure 2 consists mainly of a hollow shaft mounted on a movable assembly (4) allowing the carriage movements inside the mandrel (5), This hollow shaft is equipped with 'A barrel (6) for storing a number of coils (7) of reinforcing threads (in Figure 2 eight coils are shown). One can envisage several barrels (6) in series on the same hollow shaft (3) in order to increase the
nombre de fils déposés et ainsi réduire les temps d'enroulement. number of wires deposited and thus reduce winding times.
Les bobine de fils (7) étant.installées, chaque fil est tiré de l'intérieur de la bobine et guidé par un ensemble de galets asservis guide fil (8) dont les rôles sont: - de presser le fil; - de réguler la tension du fil - d'être moteur lors de la phase de mise en place du fil au travers de l'arbre creux (3) ceci avant le démarrage des opérations de fabrication. Un systèmes de guidage par jet d'air (9) permettant d'amener le fil jusqu'au guidage final (12) sur le mandrin (5). Ce système est réalisé par un tube cintré avec un revêtement anti-adhérent type téflon au point o il y a The spool of threads (7) being installed, each thread is pulled from inside the spool and guided by a set of servo-driven thread guide rollers (8) whose roles are: - to press the thread; - to regulate the tension of the thread - to be a motor during the phase of placing the thread through the hollow shaft (3) this before the start of manufacturing operations. An air jet guidance system (9) for bringing the wire to the final guidance (12) on the mandrel (5). This system is realized by a bent tube with a non-stick coating type Teflon at the point where there is
un changement de direction (11). Dans une autre réalisation, un système de renvoi à 90 par galet (non représenté) peut être employé. a change of direction (11). In another embodiment, a return system to 90 by roller (not shown) can be used.
- De sectionner le fil par blocage des galets lorsque la quantité de renforts est atteinte, juste avant la phase dé centrifugation à grande vitesse; - To cut the wire by blocking the rollers when the quantity of reinforcements is reached, just before the high speed centrifugation phase;
- De contrôler par un asservissement la quantité de fil enroul&. - To control by a servo the quantity of wound wire &.
Chaque fil est ainsi guidé jusqu'à la zone de dépose (12) sur le mandrin. Le bras de guidage (13) amenant le fil à zone de dépose (12) peut être constitué d'un tube avec en extrémité (12) un oeillet en céramique. Chaque tube peut être démontable et être remplacé par un autre plus court ou plus long selon le diamètre du mandrin (5). Il y a bien entendu autant de tubes que de fils répartis en extrémité sur la circonférence de l'arbre creux (3). Le fil ressortant de l'oeillet en céramique (12) est plaqué sur la surface interne du mandrin par la force centrifuge. Le jet d'air (9) ne sert que lors de la phase de départ afin de positionner le fil en lui faisant traverser l'arbre creux (3) et le bras de guidage (13). Each wire is thus guided to the deposit area (12) on the mandrel. The guide arm (13) bringing the wire to the deposit area (12) may consist of a tube with an end (12) of a ceramic eyelet. Each tube can be removable and replaced by another shorter or longer depending on the diameter of the mandrel (5). There are of course as many tubes as there are wires distributed at the end around the circumference of the hollow shaft (3). The wire emerging from the ceramic eyelet (12) is pressed onto the inner surface of the mandrel by centrifugal force. The air jet (9) is only used during the start phase to position the wire by making it pass through the hollow shaft (3) and the guide arm (13).
La résine est stockée à l'extérieur du dispositif d'alimentation rotatif ainsi que la pompe d'alimentation qui est elle aussi externe. Un flexible muni d'un raccord rotatif est branché à l'extrémité de l'arbre creux (3) au tube de transport (14> qui alimente la tête de projection de résine (15). The resin is stored outside the rotary feeder as well as the feed pump which is also external. A hose fitted with a rotary connector is connected at the end of the hollow shaft (3) to the transport tube (14> which supplies the resin spray head (15).
L'ensemble est supporté par un bâti lourd et renforcé (16). Un équilibrage dynamique du barillet (6) est réalisé au moyen de vérins déplaçant des masselottes, ceux-ci étant asservis à des paliers dits intelligents munis de capteurs de contrainte. The assembly is supported by a heavy and reinforced frame (16). Dynamic balancing of the barrel (6) is carried out by means of jacks displacing weights, these being controlled by so-called intelligent bearings provided with stress sensors.
La course de l'ensemble d'alimentation correspond à la longueur de la pièce usinée (L) The stroke of the feed assembly corresponds to the length of the workpiece (L)
Claims (8)
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FR0214767A FR2847564B1 (en) | 2002-11-25 | 2002-11-25 | MACHINES FOR MANUFACTURING COMPOSITE CYLINDRICAL PARTS BY CENTRIFUGING AND BY WRAPPING A CONTINUOUS PATCH OF REINFORCING WIRES |
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FR0214767A FR2847564B1 (en) | 2002-11-25 | 2002-11-25 | MACHINES FOR MANUFACTURING COMPOSITE CYLINDRICAL PARTS BY CENTRIFUGING AND BY WRAPPING A CONTINUOUS PATCH OF REINFORCING WIRES |
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FR2847564B1 FR2847564B1 (en) | 2005-06-03 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3530026A (en) * | 1965-07-21 | 1970-09-22 | Gloster Saro Ltd | Apparatus for filament winding of articles in reinforced synthetic resin |
FR2161735A1 (en) * | 1971-05-19 | 1973-07-13 | David Jean | Mfr of tanks - of centrifuged glass fibre in reinforced polyester |
DE2414526A1 (en) * | 1974-03-26 | 1975-10-23 | Centre Ind Res Ltd | PROCESS FOR ROTARY FORMING OF POLYAETHYLENE |
DE2637683A1 (en) * | 1976-08-20 | 1978-02-23 | Kabel Metallwerke Ghh | Casting thermosetting resin(s) with metal reinforcement - by inserting uniformly perforated metal tube in mould and centrifuging |
WO2001021383A1 (en) * | 1999-09-20 | 2001-03-29 | Hunter Douglas Inc. | Non-woven composite fabric and method and apparatus for manufacturing same |
JP2002018872A (en) * | 2000-07-05 | 2002-01-22 | Nitto Denko Corp | Method for manufacturing highly accurate tubular body |
-
2002
- 2002-11-25 FR FR0214767A patent/FR2847564B1/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3530026A (en) * | 1965-07-21 | 1970-09-22 | Gloster Saro Ltd | Apparatus for filament winding of articles in reinforced synthetic resin |
FR2161735A1 (en) * | 1971-05-19 | 1973-07-13 | David Jean | Mfr of tanks - of centrifuged glass fibre in reinforced polyester |
DE2414526A1 (en) * | 1974-03-26 | 1975-10-23 | Centre Ind Res Ltd | PROCESS FOR ROTARY FORMING OF POLYAETHYLENE |
DE2637683A1 (en) * | 1976-08-20 | 1978-02-23 | Kabel Metallwerke Ghh | Casting thermosetting resin(s) with metal reinforcement - by inserting uniformly perforated metal tube in mould and centrifuging |
WO2001021383A1 (en) * | 1999-09-20 | 2001-03-29 | Hunter Douglas Inc. | Non-woven composite fabric and method and apparatus for manufacturing same |
JP2002018872A (en) * | 2000-07-05 | 2002-01-22 | Nitto Denko Corp | Method for manufacturing highly accurate tubular body |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 05 3 May 2002 (2002-05-03) * |
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FR2847564B1 (en) | 2005-06-03 |
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