FR2687601A1 - Method of manufacturing a butterfly valve, device for implementing it and butterfly valve obtained by this method - Google Patents
Method of manufacturing a butterfly valve, device for implementing it and butterfly valve obtained by this method Download PDFInfo
- Publication number
- FR2687601A1 FR2687601A1 FR9202225A FR9202225A FR2687601A1 FR 2687601 A1 FR2687601 A1 FR 2687601A1 FR 9202225 A FR9202225 A FR 9202225A FR 9202225 A FR9202225 A FR 9202225A FR 2687601 A1 FR2687601 A1 FR 2687601A1
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- FR
- France
- Prior art keywords
- nozzle
- butterfly
- insert
- cores
- plastic material
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0017—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor moulding interconnected elements which are movable with respect to one another, e.g. chains or hinges
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1671—Making multilayered or multicoloured articles with an insert
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0017—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor moulding interconnected elements which are movable with respect to one another, e.g. chains or hinges
- B29C2045/002—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor moulding interconnected elements which are movable with respect to one another, e.g. chains or hinges using shrinkage
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C2045/1601—Making multilayered or multicoloured articles the injected materials not being adhered or bonded to each other
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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
- B29K2059/00—Use of polyacetals, e.g. POM, i.e. polyoxymethylene or derivatives thereof, as moulding material
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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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
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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
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/7506—Valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/107—Manufacturing or mounting details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Lift Valve (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
La présente invention est relative à un nouveau procédé de fabrication d'une vanne papillon ou dispositif pour le mettre en oeuvre et vanne papillon obtenue par ce procédé. The present invention relates to a new method of manufacturing a butterfly valve or device for implementing it and butterfly valve obtained by this method.
On sait qu'une vanne papillon est constituée d'un corps convergent-divergent composé généralement de deux troncs de cone en opposition dont la section de passage peut être obturée par une plaque ou papillon qui pivote autour d'un axe sensiblement perpendiculaire à celui de la buse et dont le contour correspond à la section interne de la buse de telle sorte que lorsque la plaque est amenée dans une position proche d'un plan perpendiculaire à l'axe du corps convergent-divergent, la section de passage de cette dernière est totalement obturée alors que lorsque la plaque est amenée dans l'axe du corps convergent-divergent la section de passage de la buse est alors totalement libérée, une ouverture progressive de la buse pouvant être obtenue par le déplacement de la plaque de ITune à l'autre de ces positions. We know that a butterfly valve consists of a convergent-divergent body generally composed of two cone trunks in opposition whose cross-section can be closed by a plate or butterfly which pivots around an axis substantially perpendicular to that of the nozzle and whose contour corresponds to the internal section of the nozzle so that when the plate is brought into a position close to a plane perpendicular to the axis of the convergent-divergent body, the passage section of the latter is completely closed while when the plate is brought into the axis of the convergent-divergent body the passage section of the nozzle is then completely released, a progressive opening of the nozzle can be obtained by moving the plate from ITune to the other of these positions.
De telles vannes papillons sont couramment utilisées, en particulier dans des buses à corps convergent-divergent pour l'admission de l'air dans les moteurs à combustion interne, notamment les moteurs d'automobiles. Such butterfly valves are commonly used, in particular in nozzles with convergent-divergent bodies for the admission of air into internal combustion engines, in particular automobile engines.
Selon l'état de la technique, ces vannes papillons sont réalisées par l'assemblage de plusieurs pièces métalliques, la buse étant obtenue par moulage d'un alliage métallique tel que celui connu sous le nom de zamak, tandis que le papillon est constitué par une plaque métallique assujettie à un axe de rotation qui pivote dans des paliers supportés par le corps de la buse. According to the state of the art, these butterfly valves are produced by assembling several metal parts, the nozzle being obtained by molding a metal alloy such as that known under the name of zamak, while the butterfly is constituted by a metal plate fixed to an axis of rotation which pivots in bearings supported by the body of the nozzle.
La réalisation de telles vannes papillons est relativement coûteuse et difficile du fait que le contour du papillon doit être usiné avec beaucoup de précision pour qutà l'état fermé, il obture complètement la section de passage du corps convergent-divergent en assurant une étanchéité parfaite par appui métal sur métal. The realization of such butterfly valves is relatively expensive and difficult because the contour of the butterfly must be machined with great precision so that in the closed state, it completely closes the passage section of the convergent-divergent body ensuring perfect sealing by metal to metal support.
La présente invention permet de réaliser ltensemble de la vanne papillon, ctest-à-dire la buse, le papillon et son axe de pivotement, en une seule opération de moulage de matières plastiques. The present invention makes it possible to produce the whole of the butterfly valve, that is to say the nozzle, the butterfly and its pivot axis, in a single plastic molding operation.
La présente invention a pour objet un nouveau procédé pour fabriquer une vanne papillon, caractérisé par le fait : que l'on réalise le moulage du corps de la buse par injection d'une première matière plastique dans un moule qui est susceptible de recevoir un insert constituant l'axe de commande du papillon, le volume intérieur de la buse étant délimité par deux noyaux qui viennent s'engager axialement dans le corps de la buse en entourant ledit insert tout en assurant le moulage de la surface intérieure de la buse; que l'on écarte l'un de l'autre lesdits noyaux selon la direction de l'axe de la buse, d'une distance correspondant à l'épaisseur que l'on désire donner au papillon; que pour réaliser le papillon l'on injecte une seconde matière plastique dans l'espace compris entre les deux noyaux, ladite seconde matière plastique enrobant au moins partiellement ledit insert; ladite seconde matière plastique présentant la double caractéristique de ne pas adhérer à ladite première matière plastique et de présenter un coefficient de dilatation au moins égal au coefficient de dilatation de ladite première matière plastique afin qu' après refroidissement et dans tout le domaine de température dans lequel la vanne papillon sera utilisée, le papillon pivote librement dans la buse tout en assurant l'étanchéité de l'obturation lorsqu'il est en position fermée. The subject of the present invention is a new method for manufacturing a butterfly valve, characterized by the fact that the body of the nozzle is molded by injecting a first plastic material into a mold which is capable of receiving an insert. constituting the throttle control axis, the interior volume of the nozzle being delimited by two cores which engage axially in the body of the nozzle by surrounding said insert while ensuring the molding of the interior surface of the nozzle; that said nuclei are moved away from each other in the direction of the axis of the nozzle, by a distance corresponding to the thickness which it is desired to give to the butterfly; that to produce the butterfly a second plastic material is injected into the space between the two cores, said second plastic material at least partially coating said insert; said second plastic material having the double characteristic of not adhering to said first plastic material and of exhibiting a coefficient of expansion at least equal to the coefficient of expansion of said first plastic material so that after cooling and throughout the temperature range in which the butterfly valve will be used, the butterfly pivots freely in the nozzle while ensuring the sealing of the closure when it is in the closed position.
Pour éviter que lors de son moulage le papillon adhère au corps de la buse on peut, soit utiliser deux matières plastiques de natures différentes qui n'adhèrent pas l'une sur l'autre, soit utiliser une même matière plastique qui présente une fusion franche de telle sorte que la matière du papillon en cours d'injection ne colle pas à celle de la buse qui est déjà solidifiée. To avoid that during its molding the butterfly adheres to the body of the nozzle, it is possible either to use two plastics of different natures which do not adhere to each other, or to use the same plastic which has a frank fusion so that the material of the butterfly during injection does not stick to that of the nozzle which is already solidified.
Selon un mode de réalisation préféré de l'invention, on réalise sur le corps de la buse, deux paliers disposés de part et d'autre du papillon à l'aide de tubes rétractables solidaires des deux parties du moule qui assurent le moulage de la partie externe de la buse et à l'intérieur desquels vient se situer l'insert, lesdits tubes étant repoussés contre les noyaux assurant le moulage de l'intérieur de la buse lors de l'injection de la première matière plastique tandis qu'ils sont légèrement écartés de l'axe de la buse durant l'injection de la seconde matière plastique de manière à réaliser de part et d'autre du papillon deux paliers cylindriques solidaires de ce dernier, paliers qui prennent appui à l'intérieur de surfaces cylindriques de même diamètre réalisées dans le corps de la buse. According to a preferred embodiment of the invention, there are produced on the body of the nozzle, two bearings arranged on either side of the butterfly by means of retractable tubes integral with the two parts of the mold which ensure the molding of the external part of the nozzle and inside which the insert is located, said tubes being pushed against the cores ensuring the molding of the interior of the nozzle during the injection of the first plastic material while they are slightly spaced from the axis of the nozzle during the injection of the second plastic material so as to produce on either side of the butterfly two cylindrical bearings integral with the latter, bearings which bear on the inside of cylindrical surfaces of same diameter made in the body of the nozzle.
La présente invention a également pour objet une vanne papillon, caractérisée par le fait qu'elle a été obtenue par le procédé décrit ci-dessus et qu'elle est constituée par une buse en une première matière plastique injectée, à l'intérieur de laquelle pivote un papillon en une seconde matière plastique injectée, le contour du papillon correspondant exactement à la section intérieure de la buse et assurant une parfaite obturation de cette dernière en position fermée, le coefficient de dilatation de la première matière plastique étant au moins égal à celui de la seconde. The present invention also relates to a butterfly valve, characterized in that it was obtained by the method described above and that it is constituted by a nozzle made of a first injected plastic material, inside which pivots a butterfly in a second injected plastic material, the contour of the butterfly corresponding exactly to the inner section of the nozzle and ensuring perfect sealing of the latter in the closed position, the coefficient of expansion of the first plastic material being at least equal to that of the second.
La présente invention a enfin pour objet un moule pour mettre en oeuvre le procédé décrit ci-dessus, ce moule étant caractérisé par le fait qu'il comporte en combinaison : au moins deux parties déterminant la forme extérieure de la buse susceptibles de s'écarter parallèlement l'une de l'autre, ces deux parties comportant chacune un orifice situé dans l'alignement l'un de l'autre pour recevoir les deux extrémités d'un insert constituant l'organe de commande du papillon, ainsi que deux noyaux destinés à déterminer la surface intérieure de la buse, lesdits noyaux étant susceptibles d'être placés dans une première position dans laquelle ils viennent au contact l'un de l'autre de part et d'autre de l'insert, et dans une seconde position dans laquelle ils sont légèrement écartés l'un de l'autre pour permettre le moulage du papillon par injection à l'aide d'un orifice réalisé dans l'un des noyaux. The present invention finally relates to a mold for implementing the method described above, this mold being characterized by the fact that it comprises in combination: at least two parts determining the external shape of the nozzle capable of deviating parallel to each other, these two parts each comprising an orifice situated in alignment with one another to receive the two ends of an insert constituting the throttle control member, as well as two cores intended to determine the internal surface of the nozzle, said cores being capable of being placed in a first position in which they come into contact with each other on either side of the insert, and in a second position in which they are slightly spaced from each other to allow the molding of the butterfly by injection using an orifice made in one of the cores.
Dans un mode de réalisation préféré de 1 invention, les deux parties déterminant la forme extérieure de la buse comportent deux tubes destinés à recevoir chacune des extrémités de l'insert, lesdits tubes pouvant être appliqués contre les noyaux pendant le moulage du corps de la buse, puis, placés dans une position légèrement écartée juste avant le moulage du papillon, pour réaliser simultanément le moulage des paliers du papillon sur la buse. In a preferred embodiment of the invention, the two parts determining the external shape of the nozzle comprise two tubes intended to receive each of the ends of the insert, said tubes being able to be applied against the cores during the molding of the body of the nozzle , then, placed in a slightly separated position just before the molding of the butterfly, to simultaneously carry out the molding of the bearings of the butterfly on the nozzle.
Dans un mode de réalisation préféré de l'invention, chacun des deux noyaux est constitué en deux parties de manière à faciliter le démoulage, ces deux parties se raccordant selon un plan parallèle à l'axe du papillon. In a preferred embodiment of the invention, each of the two cores is made up of two parts so as to facilitate demolding, these two parts being connected along a plane parallel to the axis of the butterfly.
Dans le but de mieux faire comprendre l'invention on va en décrire maintenant à titre d'illustration et sans aucun caractère limitatif un mode de réalisation pris comme exemple et représenté sur le dessin annexe. In order to better understand the invention will now be described by way of illustration and without any limiting character an embodiment taken as an example and shown in the accompanying drawing.
Sur ce dessin
- la figure 1 est une vue schématique représentant les différentes parties d'un moule pour mettre en oeuvre l'invention,
- la figure 2 est une vue de gauche du noyau du moule de la figure 1,
- les figures 3 et 4 correspondent aux figures 1 et 2 lors de la mise en oeuvre de la première phase du procédé selon I'invention,
- les figures 5 et 6 correspondent aux figures 1 et 2 lors de la mise en oeuvre de la deuxième phase du procédé selon l'invention,
- les figures 7 et 8 représentent le moule des figures 5 et 6 après injection du corps de la buse,
- les figures 9 et 10 correspondent aux figures 1 et 2 lors de la troisième phase de la mise en oeuvre du procédé selon l'invention,
- les figures 11 et 12 représentent le moulage par injection du papillon, et
- la figure 13 représentent le corps de la buse et le papillon obtenu en fin de moulage selon l'invention.On this drawing
FIG. 1 is a schematic view showing the different parts of a mold for implementing the invention,
FIG. 2 is a left view of the core of the mold in FIG. 1,
FIGS. 3 and 4 correspond to FIGS. 1 and 2 during the implementation of the first phase of the method according to the invention,
FIGS. 5 and 6 correspond to FIGS. 1 and 2 during the implementation of the second phase of the method according to the invention,
FIGS. 7 and 8 represent the mold of FIGS. 5 and 6 after injection of the body of the nozzle,
FIGS. 9 and 10 correspond to FIGS. 1 and 2 during the third phase of the implementation of the method according to the invention,
FIGS. 11 and 12 show the injection molding of the butterfly, and
- Figure 13 shows the body of the nozzle and the butterfly obtained at the end of molding according to the invention.
On a schématiquement représenté sur la figure I une vue en coupe axiale du moule permettant de réaliser une vanne papillon selon l'invention. There is schematically shown in Figure I an axial sectional view of the mold for making a butterfly valve according to the invention.
Ce moule est composé de deux parties centrales 1 et 2 susceptibles de s'écarter et se rapprocher l'une de l'autre perpendiculairement à l'axe 3 de la vanne papillon qui doit être fabriquée. This mold is composed of two central parts 1 and 2 capable of deviating and approaching each other perpendicular to the axis 3 of the butterfly valve which must be manufactured.
Ces parties centrales sont complétées par deux parties supérieures 4 et 5 et par deux parties inférieures 6 et 7 qui peuvent deux à deux se rapprocher l'une de l'autre comme les parties centrales 1 et 2 et qui peuvent également se dégager des parties centrales respectivement vers le haut et vers le bas. These central parts are supplemented by two upper parts 4 and 5 and by two lower parts 6 and 7 which can two by two approach each other like the central parts 1 and 2 and which can also be released from the central parts up and down respectively.
Les parties supérieures 4 et 5 comportent des canaux d'injection 8 et 9 qui permettent de réaliser le moulage du corps de la buse, comme cela sera expliqué ultérieurement. The upper parts 4 and 5 have injection channels 8 and 9 which make it possible to mold the body of the nozzle, as will be explained later.
Le moule comporte également un noyau supérieur 10 et un noyau inférieur 11 dont les périphéries permettent de délimiter la surface intérieure de la buse et dont les extrémités 10a et lla permettent de délimiter les contours du papillon. The mold also comprises an upper core 10 and a lower core 11 whose peripheries make it possible to delimit the interior surface of the nozzle and whose ends 10a and lla make it possible to delimit the contours of the butterfly.
On retrouve les noyaux 10 et 11 sur la figure 2 qui est une vue de gauche des noyaux de la figure 1. We find the cores 10 and 11 in Figure 2 which is a left view of the cores in Figure 1.
Ces noyaux 10 et 11 sont chacun réalisés en deux parties respectivement lOb, 10c et Ilb, llc dont l'utilité sera expliquée ultérieurement. These cores 10 and 11 are each made in two parts respectively lOb, 10c and Ilb, llc whose utility will be explained later.
Les parties centrales I et 2 du moule comportent deux tubes 12 et 13 qui sont susceptibles dtoetre déplacés axialement entre deux positions, comme cela sera expliqué ultérieurement. The central parts I and 2 of the mold comprise two tubes 12 and 13 which are capable of being moved axially between two positions, as will be explained later.
Sur la figure 1, les tubes 12 et 13 sont représentés dans une de leurs positions, l'autre position étant déterminée par le fait que leur extrémité vient en butée contre le fond des raînures circulaires 14 et 15 qui ont été schématiquement représentées sur le dessin. In Figure 1, the tubes 12 and 13 are shown in one of their positions, the other position being determined by the fact that their end abuts against the bottom of the circular grooves 14 and 15 which have been schematically shown in the drawing .
On a schématiquement représenté sur les figures 3 et 4 la première phase du procédé de fabrication d'une vanne papillon selon l'invention. Schematically shown in Figures 3 and 4 the first phase of the manufacturing process of a butterfly valve according to the invention.
Lors de cette première phase, on a engagé à l'intérieur du tube 13 un insert métallique 16 qui est destiné à constituer l'axe de commande du papillon. During this first phase, a metallic insert 16 is engaged inside the tube 13 which is intended to constitute the throttle control axis.
Cet insert présente une partie centrale 16a qui recevra le moulage du papillon et à ses extrémités deux parties cylindriques 16b et 16c dont le diamètre extérieur correspond au diamètre intérieur des tubes 12 et 13. This insert has a central part 16a which will receive the molding of the butterfly and at its ends two cylindrical parts 16b and 16c whose outside diameter corresponds to the inside diameter of the tubes 12 and 13.
Lors de la première phase du procédé selon l'invention, une extrémité 16c de l'insert 16 est engagée à l'intérieur du tube 13. During the first phase of the method according to the invention, one end 16c of the insert 16 is engaged inside the tube 13.
Conformément à l'invention, il est indifférent que l'extrémité 16c soit engagée dans le tube 13 ou que l'extrémité 16b soit engagée dans le tube 12.According to the invention, it does not matter whether the end 16c is engaged in the tube 13 or that the end 16b is engaged in the tube 12.
Pour passer à la deuxième phase du procédé selon l'invention, les six parties 1, 2, 4, 5, 6 et 7 du moule sont réunies en y inserant les noyaux 11 et 10. To proceed to the second phase of the process according to the invention, the six parts 1, 2, 4, 5, 6 and 7 of the mold are joined together by inserting the cores 11 and 10 therein.
Comme on peut le voir en particulier sur la figure 6, les extrémités des noyaux viennent au contact l'une de l'autre. As can be seen in particular in Figure 6, the ends of the cores come into contact with each other.
De même, le noyau 11 vient au contact des parties inférieures 6 et 7 du moule alors que le noyau 10 vient au contact des parties supérieures 4 et 5 du moule. Likewise, the core 11 comes into contact with the lower parts 6 and 7 of the mold while the core 10 comes into contact with the upper parts 4 and 5 of the mold.
On voit également sur la figure 5 comment les extrémités des noyaux viennent au contact des extrémités des tubes 12 et 13 de manière à ce que l'insert 16 reste, dans cette phase du procédé, totalement isolé du volume intérieur du moule dans lequel sera injectée la matière plastique par l'intermédiaire des orifices 8 et 9 pour constituer le corps de la buse. We also see in Figure 5 how the ends of the cores come into contact with the ends of the tubes 12 and 13 so that the insert 16 remains, in this phase of the process, completely isolated from the interior volume of the mold into which will be injected the plastic through the openings 8 and 9 to form the body of the nozzle.
Les figures 7 et 8 correspondent aux figures 5 et 6 après injection de la matière plastique qui réalise le corps de la buse. Figures 7 and 8 correspond to Figures 5 and 6 after injection of the plastic which makes the body of the nozzle.
On voit clairement sur la figure 7 comment l'insert 16 est isolé du corps de la buse 17. It is clearly seen in FIG. 7 how the insert 16 is isolated from the body of the nozzle 17.
Comme représenté sur les figures 9 et 10, immédiatement après le moulage du corps de la buse, on écarte légèrement la partie 10b du noyau 10 et la partie llc du noyau 11, tandis que l'on écarte également les tubes 12 et 13 dont les extrémités extérieures viennent buter en 14 et 15 respectivement sur les moules 2 et 1. As shown in FIGS. 9 and 10, immediately after molding the body of the nozzle, part 10b of the core 10 and part llc of the core 11 are slightly separated, while the tubes 12 and 13, the outer ends abut at 14 and 15 respectively on molds 2 and 1.
Ces deux séries de déplacement ont pour effet, d'une part de créer un espace 18 pour réaliser le moulage du papillon, et d'autre part de réaliser deux espaces annulaires 19 et 20 qui sont situés autour de l'insert dans l'épaisseur de la paroi du corps de la buse. Ces espaces annulaires 19 et 20 sont destinés à réaliser des paliers solidaires du corps du papillon pour permettre à ce dernier de tourillonner directement dans le corps de la buse. These two series of displacement have the effect, on the one hand of creating a space 18 for carrying out the molding of the butterfly, and on the other hand of producing two annular spaces 19 and 20 which are located around the insert in the thickness from the wall of the nozzle body. These annular spaces 19 and 20 are intended to produce bearings integral with the body of the butterfly to allow the latter to journal directly in the body of the nozzle.
On a représenté sur les figures 11 et 12 la réalisation par injection du papillon par l'orifice 21 réalisé dans la partie 10c du noyau 10. FIGS. 11 and 12 show the embodiment by injection of the butterfly through the orifice 21 produced in the part 10c of the core 10.
Cette injection réalise en une seule partie autour de l'insert 16 la plaque proprement dite 22 du papillon qui, comme on le voit sur la figure 12 a sa périphérie délimitée par le corps de la buse 17 préalablement moulé, l'enrobage 23 de la partie centrale 16a de l'insert 16, ainsi que les deux disques 24 et 25 qui tourillonnent dans les évidements circulaires 19 et 20 réalisés dans le corps de la buse comme décrit ci-dessus en rapport avec la figure 9. This injection produces in a single part around the insert 16 the actual plate 22 of the butterfly which, as can be seen in FIG. 12 has its periphery delimited by the body of the nozzle 17 previously molded, the coating 23 of the central part 16a of the insert 16, as well as the two discs 24 and 25 which rotate in the circular recesses 19 and 20 produced in the body of the nozzle as described above with reference to FIG. 9.
On a représenté sur la figure 13, la vanne papillon obtenue selon l'invention après écartement des différentes parties du moule. There is shown in Figure 13, the butterfly valve obtained according to the invention after spacing of the different parts of the mold.
On voit en particulier sur la figure 13, comment le papillon tourillonne à l'aide de ses disques cylindriques 24 et 25 dans le corps de la buse, le fait que le papillon 22 prenne appui sur la surface intérieure de la buse évitant tout déplacement latéral. We see in particular in Figure 13, how the butterfly journalled using its cylindrical discs 24 and 25 in the body of the nozzle, the fact that the butterfly 22 is supported on the inner surface of the nozzle avoiding any lateral movement .
Le papillon peut être commandé par les parties 16b et 16c de l'insert. The butterfly can be controlled by the parts 16b and 16c of the insert.
Comme on le voit en particulier sur la figure 12, la périphérie du papillon 22 est directement moulée sur la partie de la surface interne de la buse contre laquelle le papillon doit venir s' appliquer pour réaliser l'obturation du passage dans la buse. As can be seen in particular in FIG. 12, the periphery of the butterfly 22 is directly molded on the part of the internal surface of the nozzle against which the butterfly must come to apply in order to close off the passage in the nozzle.
I1 en résulte que l'on obtient une obturation parfaite car la périphérie du papillon a obligatoirement exactement la même forme que la partie correspondante de la buse. As a result, perfect obturation is obtained since the periphery of the butterfly necessarily has the exact same shape as the corresponding part of the nozzle.
Grâce à cette caractéristique, le procédé selon l'invention présente l'avantage de permettre le moulage à bas prix de vannes papillon dont la section de passage du fluide peut être différente d'une section circulaire du fait que le papillon adapte automatiquement sa forme à celle de la section libre de la buse. Thanks to this characteristic, the method according to the invention has the advantage of allowing low-cost molding of butterfly valves whose cross section of the fluid can be different from a circular section because the butterfly automatically adapts its shape to that of the free section of the nozzle.
Comme cela a été exposé précédemment, le procédé selon l'invention implique que l'on puisse réaliser successivement le moulage du corps de la buse et celui du papillon sans que la matière plastique injectée lors du moulage du papillon adhère à la matière plastique utilisée pour le moulage de la buse. As explained above, the method according to the invention implies that it is possible to successively mold the body of the nozzle and that of the butterfly without the plastic material injected during the molding of the butterfly adhering to the plastic material used for the molding of the nozzle.
Ceci peut être obtenu, soit en utilisant des matières plastiques différentes de caractéristiques appropriées, soit encore en utilisant une même matière plastique qui présente une fusion franche de telle sorte que la matière plastique constituant le corps de la buse soit déjà solidifiée au moment où l'on réalise l'injection du papillon. This can be obtained either by using different plastics with suitable characteristics, or by using the same plastic which has a clear fusion so that the plastic constituting the body of the nozzle is already solidified by the time the the butterfly injection is carried out.
C'est en particulier le cas des polyamides. This is in particular the case of polyamides.
Par ailleurs et pour permettre un libre pivotement du papillon par rapport à la buse, il est souhaitable, conformément à l'invention, que le papillon présente un coefficient de dilatation supérieur et au moins égal au coefficient de dilatation du corps de la buse, ceci dans le domaine de température de fonctionnement de la vanne papillon. Furthermore and to allow free pivoting of the butterfly relative to the nozzle, it is desirable, in accordance with the invention, that the butterfly has a coefficient of expansion greater and at least equal to the coefficient of expansion of the body of the nozzle, this in the operating temperature range of the butterfly valve.
A titre d'exemple, on peut utiliser selon l'invention du polyamide 4.6 (PA 4/6) chargé avec 20 à 30% de fibre de verre qui, en raison de sa fusion franche, permet de réaliser successivement le moulage du corps de la buse et celui du papillon sans que le papillon adhère à la buse. By way of example, it is possible to use, according to the invention, polyamide 4.6 (PA 4/6) loaded with 20 to 30% glass fiber which, due to its frank fusion, makes it possible to successively mold the body of the nozzle and that of the butterfly without the butterfly adhering to the nozzle.
On peut également utiliser par exemple du polyamide 6.6 (PA 6/6) chargé avec 20 à 30% de fibre de verre pour réaliser le corps de la buse et du polyoxyméthylène (POM) chargé avec 20 à 30% de fibre de verre pour réaliser le papillon. It is also possible, for example, to use polyamide 6.6 (PA 6/6) loaded with 20 to 30% glass fiber to make the nozzle body and polyoxymethylene (POM) loaded with 20 to 30% glass fiber to make the nozzle body. the butterfly.
On peut encore utiliser par exemple du polybutylène téréphtalate (PBT) chargé de 20 à 30% de fibre de verre pour réaliser le corps de la buse et du polyoxyméthylène (POM) chargé avec 20 à 30% de fibre de verre pour réaliser le papillon. It is also possible, for example, to use polybutylene terephthalate (PBT) loaded with 20 to 30% glass fiber to make the body of the nozzle and polyoxymethylene (POM) loaded with 20 to 30% glass fiber to make the butterfly.
I1 est bien entendu que le mode de réalisation qui a été décrit n'a été donné qu a titre d'illustration et qu'il ne présente aucun caractère limitatif. It is understood that the embodiment which has been described has been given only by way of illustration and that it has no limiting character.
C'est ainsi que si dans ce mode de réalisation la surface intérieure de la buse a une surface biconique convergente-divergente, il est également possible de donner à l'intérieur de la buse une surface différente telle que par exemple une surface cylindrique. Thus, if in this embodiment the internal surface of the nozzle has a convergent-divergent biconical surface, it is also possible to give the interior of the nozzle a different surface such as for example a cylindrical surface.
De même la section de la buse peut être autre que circulaire. Similarly, the section of the nozzle may be other than circular.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9202225A FR2687601A1 (en) | 1992-02-26 | 1992-02-26 | Method of manufacturing a butterfly valve, device for implementing it and butterfly valve obtained by this method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9202225A FR2687601A1 (en) | 1992-02-26 | 1992-02-26 | Method of manufacturing a butterfly valve, device for implementing it and butterfly valve obtained by this method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2687601A1 true FR2687601A1 (en) | 1993-08-27 |
| FR2687601B1 FR2687601B1 (en) | 1995-04-28 |
Family
ID=9427053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9202225A Granted FR2687601A1 (en) | 1992-02-26 | 1992-02-26 | Method of manufacturing a butterfly valve, device for implementing it and butterfly valve obtained by this method |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2687601A1 (en) |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1995016854A1 (en) * | 1993-12-17 | 1995-06-22 | Robert Bosch Gmbh | Throttle, in particular for internal combustion engines, and process for producing such throttles |
| EP0747587A1 (en) * | 1995-06-10 | 1996-12-11 | Robert Bosch Gmbh | Device for adjusting the pipe length of an intake manifold and method of manufacture |
| WO1997004259A1 (en) * | 1995-07-17 | 1997-02-06 | Filterwerk Mann + Hummel Gmbh | Throttle valve |
| WO1998040615A1 (en) * | 1997-03-07 | 1998-09-17 | Siemens Aktiengesellschaft | Process for manufacturing a switching valve |
| FR2762374A1 (en) * | 1997-04-18 | 1998-10-23 | Coutier Moulage Gen Ind | BUTTERFLY VALVE FOR REGULATING THE FLOW OF A FLUID AND ITS MANUFACTURING METHODS |
| EP0899073A2 (en) * | 1997-08-27 | 1999-03-03 | Siemens Automotive Corporation | Process for manufacturing an air flow valve |
| EP1046486A1 (en) * | 1999-04-24 | 2000-10-25 | FILTERWERK MANN + HUMMEL GmbH | Mould tool for producing a plurality of parts mounted by injection moulding |
| WO2001009498A1 (en) * | 1999-08-03 | 2001-02-08 | Filterwerk Mann+Hummel Gmbh | Valve |
| WO2001026877A1 (en) * | 1999-10-12 | 2001-04-19 | Siemens Automotive Inc | Process to evenly form an air flow valve |
| DE10023348A1 (en) * | 2000-05-12 | 2001-12-13 | Mannesmann Vdo Ag | Method for producing a housing for a throttle valve assembly and throttle valve assembly |
| EP1170485A2 (en) * | 2000-07-05 | 2002-01-09 | Visteon Global Technologies, Inc. | Electronic throttle body with insert molded actuator motor |
| EP1126145A3 (en) * | 2000-02-16 | 2002-04-03 | Denso Corporation | Manufacturing method for a throttle body of an internal combustion engine and a related throttle apparatus |
| US6412170B1 (en) | 1997-04-24 | 2002-07-02 | Siemens Aktiengesellschaft | Method of manufacturing a control flap |
| DE10105526A1 (en) * | 2001-02-07 | 2002-08-14 | Bosch Gmbh Robert | Device for controlling a gas flow and manufacturing method thereof |
| EP1239132A1 (en) * | 2001-03-05 | 2002-09-11 | Dsm N.V. | Thermoplastic throttle boby |
| WO2002075120A2 (en) * | 2001-03-15 | 2002-09-26 | Robert Bosch Gmbh | Valve assembly for an internal combustion engine and method of manufacturing |
| EP1284347A1 (en) * | 2000-05-25 | 2003-02-19 | Hitachi, Ltd. | Throttle body |
| FR2828830A1 (en) * | 2001-02-02 | 2003-02-28 | Siemens Ag | PROCESS FOR MAKING A HOUSING OF A BUTTERFLY BUTTERFLY BODY |
| DE10142452A1 (en) * | 2001-08-31 | 2003-03-20 | Siemens Ag | Forming throttle butterfly valve and housing for vehicle by injection molding or die casting, molds housing and butterfly flap in single piece |
| EP1371832A1 (en) * | 2002-06-14 | 2003-12-17 | Robert Bosch Gmbh | Butterfly valve having overmolded axle |
| WO2004005000A1 (en) * | 2002-07-02 | 2004-01-15 | Siemens Aktiengesellschaft | Method for producing a throttle valve in a continuous throttle body by plastic injection molding |
| WO2004033180A1 (en) * | 2002-10-07 | 2004-04-22 | Siemens Aktiengesellschaft | Method for production of a throttle valve in a continuous throttle valve connector |
| EP1447603A3 (en) * | 2003-02-12 | 2004-09-22 | Mann + Hummel GmbH | Throttle butterfly valve and method of producing |
| WO2004081429A1 (en) * | 2003-03-10 | 2004-09-23 | Siemens Aktiengesellschaft | Dividing unit of a throttle valve housing |
| DE102005041910A1 (en) * | 2005-09-03 | 2007-03-08 | GM Global Technology Operations, Inc., Detroit | Throttle body-intake manifold unit for e.g. passenger car, has throttle body unit partially inserted into manifold and sprayed with plastic e.g. polyamide, such that complete positive-fit connection is formed between body unit and manifold |
| DE19781531B4 (en) * | 1996-12-09 | 2007-12-13 | Denso Corp., Kariya | Throttle body and manufacturing process for it |
| WO2008031845A1 (en) * | 2006-09-15 | 2008-03-20 | Mahle International Gmbh | Method for the production of flap mechanisms for intake lines of combustion engines |
| WO2015086601A1 (en) * | 2013-12-09 | 2015-06-18 | Valeo Systemes Thermiques | Heating, ventilation and/or air-conditioning system for motor vehicles |
| CN107186961A (en) * | 2017-06-05 | 2017-09-22 | 浙江声波管阀实业有限公司 | A kind of mould of ball valve core |
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Cited By (48)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995016854A1 (en) * | 1993-12-17 | 1995-06-22 | Robert Bosch Gmbh | Throttle, in particular for internal combustion engines, and process for producing such throttles |
| EP0747587A1 (en) * | 1995-06-10 | 1996-12-11 | Robert Bosch Gmbh | Device for adjusting the pipe length of an intake manifold and method of manufacture |
| WO1997004259A1 (en) * | 1995-07-17 | 1997-02-06 | Filterwerk Mann + Hummel Gmbh | Throttle valve |
| DE19781531B4 (en) * | 1996-12-09 | 2007-12-13 | Denso Corp., Kariya | Throttle body and manufacturing process for it |
| WO1998040615A1 (en) * | 1997-03-07 | 1998-09-17 | Siemens Aktiengesellschaft | Process for manufacturing a switching valve |
| FR2762374A1 (en) * | 1997-04-18 | 1998-10-23 | Coutier Moulage Gen Ind | BUTTERFLY VALVE FOR REGULATING THE FLOW OF A FLUID AND ITS MANUFACTURING METHODS |
| WO1998048204A1 (en) | 1997-04-18 | 1998-10-29 | M.G.I. Coutier S.A. | Butterfly valve for regulating a fluid flow |
| US6138988A (en) * | 1997-04-18 | 2000-10-31 | M.G.I. Coutier S.A. | Butterfly valve for regulating a fluid flow |
| US6412170B1 (en) | 1997-04-24 | 2002-07-02 | Siemens Aktiengesellschaft | Method of manufacturing a control flap |
| EP0899073A2 (en) * | 1997-08-27 | 1999-03-03 | Siemens Automotive Corporation | Process for manufacturing an air flow valve |
| EP0899073A3 (en) * | 1997-08-27 | 2001-05-16 | Siemens Automotive Corporation | Process for manufacturing an air flow valve |
| EP1046486A1 (en) * | 1999-04-24 | 2000-10-25 | FILTERWERK MANN + HUMMEL GmbH | Mould tool for producing a plurality of parts mounted by injection moulding |
| WO2001009498A1 (en) * | 1999-08-03 | 2001-02-08 | Filterwerk Mann+Hummel Gmbh | Valve |
| WO2001026877A1 (en) * | 1999-10-12 | 2001-04-19 | Siemens Automotive Inc | Process to evenly form an air flow valve |
| US6572795B1 (en) | 1999-10-12 | 2003-06-03 | Siemens Vdo Automotive Inc. | Process and apparatus to evenly form an air flow valve |
| EP1126145A3 (en) * | 2000-02-16 | 2002-04-03 | Denso Corporation | Manufacturing method for a throttle body of an internal combustion engine and a related throttle apparatus |
| US6626421B2 (en) | 2000-02-16 | 2003-09-30 | Denso Corporation | Manufacturing method for a throttle body of an internal combustion engine and a related throttle apparatus |
| DE10023348A1 (en) * | 2000-05-12 | 2001-12-13 | Mannesmann Vdo Ag | Method for producing a housing for a throttle valve assembly and throttle valve assembly |
| US6649111B2 (en) | 2000-05-12 | 2003-11-18 | Mannesmann Vdo Ag | Method for producing a housing for a throttle valve connection piece |
| EP1284347A4 (en) * | 2000-05-25 | 2007-07-25 | Hitachi Ltd | Throttle body |
| EP1284347A1 (en) * | 2000-05-25 | 2003-02-19 | Hitachi, Ltd. | Throttle body |
| EP1170485A3 (en) * | 2000-07-05 | 2002-05-08 | Visteon Global Technologies, Inc. | Electronic throttle body with insert molded actuator motor |
| EP1170485A2 (en) * | 2000-07-05 | 2002-01-09 | Visteon Global Technologies, Inc. | Electronic throttle body with insert molded actuator motor |
| FR2828830A1 (en) * | 2001-02-02 | 2003-02-28 | Siemens Ag | PROCESS FOR MAKING A HOUSING OF A BUTTERFLY BUTTERFLY BODY |
| DE10105526A1 (en) * | 2001-02-07 | 2002-08-14 | Bosch Gmbh Robert | Device for controlling a gas flow and manufacturing method thereof |
| WO2002062551A1 (en) * | 2001-02-07 | 2002-08-15 | Robert Bosch Gmbh | Device for controlling a gaseous stream and a production method therefor |
| DE10105526B4 (en) * | 2001-02-07 | 2004-12-23 | Robert Bosch Gmbh | Method of making a valve assembly |
| CN1295426C (en) * | 2001-03-05 | 2007-01-17 | Dsmip财产有限公司 | Thermoplastic throttle body |
| WO2002070881A1 (en) * | 2001-03-05 | 2002-09-12 | Dsm Ip Assets B.V. | Thermoplastic throttle body |
| EP1239132A1 (en) * | 2001-03-05 | 2002-09-11 | Dsm N.V. | Thermoplastic throttle boby |
| KR100851130B1 (en) * | 2001-03-05 | 2008-08-08 | 디에스엠 아이피 어셋츠 비.브이. | Thermoplastic throttle body |
| US7282170B2 (en) | 2001-03-05 | 2007-10-16 | Dsm Ip Assets B.V. | Thermoplastic throttle body |
| WO2002075120A2 (en) * | 2001-03-15 | 2002-09-26 | Robert Bosch Gmbh | Valve assembly for an internal combustion engine and method of manufacturing |
| WO2002075120A3 (en) * | 2001-03-15 | 2002-11-21 | Bosch Gmbh Robert | Valve assembly for an internal combustion engine and method of manufacturing |
| DE10142452A1 (en) * | 2001-08-31 | 2003-03-20 | Siemens Ag | Forming throttle butterfly valve and housing for vehicle by injection molding or die casting, molds housing and butterfly flap in single piece |
| EP1371832A1 (en) * | 2002-06-14 | 2003-12-17 | Robert Bosch Gmbh | Butterfly valve having overmolded axle |
| WO2004005000A1 (en) * | 2002-07-02 | 2004-01-15 | Siemens Aktiengesellschaft | Method for producing a throttle valve in a continuous throttle body by plastic injection molding |
| DE10229641A1 (en) * | 2002-07-02 | 2004-01-29 | Siemens Ag | Process for producing a throttle valve in a continuous throttle valve assembly |
| WO2004033180A1 (en) * | 2002-10-07 | 2004-04-22 | Siemens Aktiengesellschaft | Method for production of a throttle valve in a continuous throttle valve connector |
| US7418781B2 (en) | 2002-10-07 | 2008-09-02 | Siemens Aktiengesellschaft | Method for production of a throttle valve in a continuous throttle valve connector |
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| US7114486B2 (en) | 2003-03-10 | 2006-10-03 | Siemens Ag | Subunit of a throttle valve housing |
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| CN100351557C (en) * | 2003-03-10 | 2007-11-28 | 西门子公司 | Subunit of a throttle valve housing |
| DE102005041910A1 (en) * | 2005-09-03 | 2007-03-08 | GM Global Technology Operations, Inc., Detroit | Throttle body-intake manifold unit for e.g. passenger car, has throttle body unit partially inserted into manifold and sprayed with plastic e.g. polyamide, such that complete positive-fit connection is formed between body unit and manifold |
| WO2008031845A1 (en) * | 2006-09-15 | 2008-03-20 | Mahle International Gmbh | Method for the production of flap mechanisms for intake lines of combustion engines |
| WO2015086601A1 (en) * | 2013-12-09 | 2015-06-18 | Valeo Systemes Thermiques | Heating, ventilation and/or air-conditioning system for motor vehicles |
| CN107186961A (en) * | 2017-06-05 | 2017-09-22 | 浙江声波管阀实业有限公司 | A kind of mould of ball valve core |
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|---|---|
| FR2687601B1 (en) | 1995-04-28 |
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