FR2685230A1 - Assembly in the form of a cluster of patterns for the consumable- (disposable-) pattern moulding of components, and method for assembling such patterns as a cluster - Google Patents
Assembly in the form of a cluster of patterns for the consumable- (disposable-) pattern moulding of components, and method for assembling such patterns as a cluster Download PDFInfo
- Publication number
- FR2685230A1 FR2685230A1 FR9116118A FR9116118A FR2685230A1 FR 2685230 A1 FR2685230 A1 FR 2685230A1 FR 9116118 A FR9116118 A FR 9116118A FR 9116118 A FR9116118 A FR 9116118A FR 2685230 A1 FR2685230 A1 FR 2685230A1
- Authority
- FR
- France
- Prior art keywords
- finger
- cluster
- model
- housing
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
- B22C7/023—Patterns made from expanded plastic materials
- B22C7/026—Patterns made from expanded plastic materials by assembling preformed parts
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/565—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits involving interference fits, e.g. force-fits or press-fits
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/126—Tenon and mortise joints
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
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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
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
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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
- B29L2031/757—Moulds, cores, dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
La présente invention se rapporte à un assemblage en grappe de modèles pour le moulage "à modèle perdu" de pièces dont la forme correspond à celle d'un modèle, et concerne aussi un procédé d'assemblage en grappe de tels modèles. The present invention relates to a cluster assembly of models for "lost model" molding of parts whose shape corresponds to that of a model, and also relates to a method of cluster assembly of such models.
Pour le moulage "à modèle perdu" de plusieurs pièces coulées simultanément dans un même moule, des modèles réalisés en matière sensible à la chaleur, comme notamment cire ou polystyrène, sont assemblés sous la forme de "grappes". Habituellement, chaque grappe comprend un conduit sur lequel un certain nombre de modèles sont greffés. Le tube est fréquemment en polystyrène et forme dans le moule un "conduit de coulée" au travers duquel une matière en fusion (par exemple un métal) peut s'écouler jusqu'aux et dans les modèles. Dans ce but, des bossages ou "attaques de coulée" sont prévus entre le conduit de coulée et chacun des modèles. Le montage des modèles sur la ou les attaques correspondantes s'effectue à l'aide de moyens de fixation divers,le plus souvent au moyen d'un ou plusieurs points de colle appliqués sur chaque modèle. For the "lost model" molding of several parts simultaneously cast in the same mold, models made of heat-sensitive material, such as in particular wax or polystyrene, are assembled in the form of "clusters". Usually, each cluster includes a conduit on which a number of models are grafted. The tube is frequently made of polystyrene and forms in the mold a "pouring duct" through which a molten material (for example a metal) can flow up to and in the models. For this purpose, bosses or "casting attacks" are provided between the casting conduit and each of the models. The models are mounted on the corresponding attack (s) using various fixing means, most often by means of one or more dots of glue applied to each model.
Toutefois, la fixation des modèles sur le conduit de coulée à l'aide de points de colle a pour inconvénients de ne pas permettre un positionnement précis des modèles sur le conduit, et d'obliger à appliquer une quantité importante de colle pour assurer un bon maintien de chaque modèle. Ceci entraîne des défauts sur les pièces, liés aux coulures et dégagements gazeux que produit la colle lors de la coulée. D'autre part, si l'assemblage des grappes est effectué mécaniquement, chaque nouvelle série de pièces oblige à effectuer sur la machine avec laquelle s'effectue l'assemblage, des réglages longs et compliqués. However, the fixing of the models on the pouring pipe using glue points has the drawbacks of not allowing precise positioning of the models on the pipe, and of requiring the application of a large quantity of glue to ensure good maintenance of each model. This leads to defects on the parts, linked to sagging and gas evolution produced by the glue during casting. On the other hand, if the assembling of the clusters is carried out mechanically, each new series of parts requires long and complicated adjustments to be made on the machine with which the assembly is carried out.
Aussi, la présente invention a pour but de proposer un assemblage en grappe qui pallie les inconvénients ci-dessus et qui permet de simplifier et de rendre plus rapide l'assemblage en grappe de tels modèles. Also, the present invention aims to provide a cluster assembly which overcomes the above drawbacks and which simplifies and makes faster the cluster assembly of such models.
A cet effet, l'invention a pour objet un assemblage en grappe de modèles, notamment en polystyrène, pour la réalisation d'au moins une pièce moulée suivant la technique de coulée dite "à modèle perdu", du type constitué par un conduit de coulée d'où fait saillie au moins une attaque de coulée, chaque modèle étant fixé sur une ou plusieurs attaques du conduit par l'intermédiaire de moyens de fixation, caractérisé en ce que lesdits moyens de fixation comprennent au moins un doigt à section constante, faisant saillie de chaque modèle et apte à s'emmancher à force dans un logement de forme correspondante prévu sur une attaque de coulée. To this end, the subject of the invention is a cluster assembly of models, in particular of polystyrene, for the production of at least one molded part according to the so-called "lost model" casting technique, of the type constituted by a casting from which at least one casting attack projects, each model being fixed to one or more attacks of the duct by means of fixing means, characterized in that said fixing means comprise at least one finger of constant section, projecting from each model and capable of being force fitted into a housing of corresponding shape provided on a casting attack.
L'assemblage est encore caractérisé en ce que chaque modèle comporte au moins deux doigts à section sensiblement constante. The assembly is further characterized in that each model comprises at least two fingers of substantially constant section.
Suivant une caractéristique de l'invention, chaque doigt a une longueur supérieure ou égale à la profondeur du logement correspondant, et de préférence supérieure de 3 à 5 mm. According to a characteristic of the invention, each finger has a length greater than or equal to the depth of the corresponding housing, and preferably greater by 3 to 5 mm.
Suivant encore une autre caractéristique de l'assemblage, la section constante précitée de chaque doigt, ainsi que celle de chaque logement correspondant, est circulaire ou oblongue. According to yet another characteristic of the assembly, the aforementioned constant section of each finger, as well as that of each corresponding housing, is circular or oblong.
L'invention se caractérise encore en ce que la profondeur précitée de chaque logement est supérieure ou égale au diamètre ou à la dimension principale du doigt venant s'y emmancher. The invention is further characterized in that the aforementioned depth of each housing is greater than or equal to the diameter or the main dimension of the finger fitting therein.
Plus particulièrement, suivant un mode de réalisation préféré de l'invention, chaque doigt est cylindrique et possède un diamètre supérieur ou égal à 12 mm. More particularly, according to a preferred embodiment of the invention, each finger is cylindrical and has a diameter greater than or equal to 12 mm.
En outre, l'invention se caractérise en ce que le diamètre ou dimension en section de chaque doigt est supérieur d'environ 0,3 mm à celui du logement correspondant. In addition, the invention is characterized in that the diameter or dimension in section of each finger is approximately 0.3 mm greater than that of the corresponding housing.
On notera ici que chaque doigt comporte un chanfrein à son extrémité libre, et de préférence un chanfrein à 450 dont la longueur est supérieure à 1 mm. It will be noted here that each finger has a chamfer at its free end, and preferably a chamfer at 450 whose length is greater than 1 mm.
D'autre part, l'invention a également pour objet un procédé d'assemblage en grappe de modèles pour coulée à modèle perdu de pièces de moulage, caractérisé en ce qu'on emmanche à force un ou plusieurs doigts à section constante du modèle dans un ou des logements de forme correspondante, prévus dans une ou plusieurs attaques appartenant à un conduit de coulée. On the other hand, the invention also relates to a method of assembling a cluster of models for lost model casting of molding parts, characterized in that one or more fingers are force-fitted with a constant section of the model into one or more correspondingly shaped housings, provided in one or more attacks belonging to a casting duct.
Mais d'autres caractéristiques et avantages de l'invention ressortiront mieux de la description détaillée d'un mode de réalisation, donné uniquement à titre d'exemple, qui suit et se réfère aux dessins et dans lesquels
- la figure 1 est une vue partielle d'un assemblage en grappe conforme à l'invention
- la figure 2 est une vue agrandie d'un détail désigné par la flèche II sur la figure 1 ; et
- la figure 3 est une vue schématique d'un poste d'assemblage en grappe selon l'invention.However, other characteristics and advantages of the invention will emerge more clearly from the detailed description of an embodiment, given solely by way of example, which follows and refers to the drawings and in which
- Figure 1 is a partial view of a cluster assembly according to the invention
- Figure 2 is an enlarged view of a detail designated by arrow II in Figure 1; and
- Figure 3 is a schematic view of a cluster assembly station according to the invention.
En se reportant tout d'abord à la figure 1, on voit une partie d'un assemblage 10 qui a la forme générale d'une grappe. L'assemblage en grappe 10 comprend une pluralité de modèles 20, dont un seul est illustré et ayant la forme de la pièce (non représentée) que l'on désire obtenir. Referring first to Figure 1, we see a part of an assembly 10 which has the general shape of a cluster. The cluster assembly 10 comprises a plurality of models 20, only one of which is illustrated and having the shape of the part (not shown) that it is desired to obtain.
Comme expliqué plus haut, chaque modèle 20 est de préférence en polystyrène ou analogue, de manière à fondre suivant la technique dite "à modèle perdu" lors de la coulée dans un moule (non représenté) d'un matériau en fusion tel que métal, avec lequel on veut réaliser la pièce de moulage. As explained above, each model 20 is preferably made of polystyrene or the like, so as to melt according to the so-called “lost model” technique during the casting into a mold (not shown) of a molten material such as metal, with which we want to make the molding part.
Outre la pluralité de modèles 20, l'assemblage 10 comprend un conduit de coulée 30 également composé d'un matériau fusible, ici du polystyrène. Le repère 31 désigne l'espace intérieur du conduit de coulée 30. In addition to the plurality of models 20, the assembly 10 includes a casting conduit 30 also made of a fusible material, here polystyrene. The reference 31 designates the interior space of the casting conduit 30.
Sur les figures 1 et 2, on voit des bossages 32 faisant saillie de la périphérie externe du conduit de coulée 30 pour constituer des attaques de coulée. In FIGS. 1 and 2, we see bosses 32 projecting from the external periphery of the casting duct 30 to constitute casting attacks.
Les modèles 20 sont montés et positionnés sur les attaques de coulée 32 correspondantes à l'aide de moyens de fixation qui vont être décrits en détail maintenant. The models 20 are mounted and positioned on the corresponding pouring attacks 32 using fixing means which will now be described in detail.
Conformément à l'invention, les moyens de fixation des modèles 20 sur les attaques 32 du conduit de coulée 30 comprennent au moins un doigt à section constante 23, faisant saillie de chaque modèle 20, et en regard d'un logement de forme correspondante 32a, prévu sur une attaque 32. According to the invention, the means for fixing the models 20 to the attacks 32 of the casting conduit 30 comprise at least one finger of constant section 23, projecting from each model 20, and facing a housing of corresponding shape 32a , planned on attack 32.
On voit sur la figure 1 que chaque modèle 20 est fixé sur le conduit de coulée 30 par l'intermédiaire de deux ensembles doigt 23 - logement 32a qui constituent des moyens de fixation par emmanchement à force. It can be seen in FIG. 1 that each model 20 is fixed to the casting conduit 30 by means of two finger 23 - housing 32a assemblies which constitute means of fixing by force fitting.
Evidemment, selon la taille du modèle 20, on peut envisager plus de deux ensembles 23-32a.Obviously, depending on the size of the model 20, we can consider more than two sets 23-32a.
Chaque doigt 23, et donc chaque logement 32a, a une section transversale circulaire ou oblongue, selon les caractéristiques d'écoulement que l'on souhaite obtenir lors de la coulée. Each finger 23, and therefore each housing 32a, has a circular or oblong cross section, depending on the flow characteristics which it is desired to obtain during casting.
En se reportant à la figure 2, on remarque que le doigt 23 est généralement cylindrique et possède un diamètre au moins égal à 12 mm. La longueur "L" du doigt 23 est supérieure à la profondeur "P" du logement correspondant 32a. Ici, l'ensemble doigt 23 - logement 32a est représenté sensiblement avec ses dimensions réelles, et on voit que la longueur "L" est supérieure à la profondeur "P" de 3 à 5 mm. Aussi, la profondeur P de chaque logement 32a est supérieure ou égale à la dimension principale en section (cas d'un doigt oblong) ou au diamètre (cas d'un doigt circulaire) du doigt 23. Referring to Figure 2, we note that the finger 23 is generally cylindrical and has a diameter at least equal to 12 mm. The length "L" of the finger 23 is greater than the depth "P" of the corresponding housing 32a. Here, the finger 23 - housing 32a assembly is shown substantially with its actual dimensions, and it can be seen that the length "L" is greater than the depth "P" from 3 to 5 mm. Also, the depth P of each housing 32a is greater than or equal to the main dimension in section (in the case of an oblong finger) or to the diameter (in the case of a circular finger) of the finger 23.
On remarque également sur la figure 2 qu'un chanfrein 24 est formé à l'extrémité libre de chaque doigt 23. De préférence, le chanfrein 24 sera sensiblement incliné à 450 par rapport à l'axe longitudinal X-X' du doigt 23, et aura une longueur suivant cet axe au moins égale à 1 mm. Note also in FIG. 2 that a chamfer 24 is formed at the free end of each finger 23. Preferably, the chamfer 24 will be substantially inclined at 450 relative to the longitudinal axis XX 'of finger 23, and will have a length along this axis at least equal to 1 mm.
Comme indiqué plus haut, chaque doigt 23 qui doit être emmanché à force dans un logement 32a correspondant, vient en regard de ce logement quand le modèle 20 est placé en vis-à-vis du conduit 30. As indicated above, each finger 23 which must be force fitted into a corresponding housing 32a, comes opposite this housing when the model 20 is placed opposite the conduit 30.
D'autre part, pour permettre la fixation par engagement à force, chaque dimension en section transversale (ou diamètre) du doigt 23 est supérieure de quelques dixièmes de millimètres à la dimension correspondante du logement 32a. Dans le cas de la figure 2, le doigt 23 a un diamètre extérieur qui est supérieur d'environ 0,3 mm au diamètre intérieur du logement 32a illustré. On the other hand, to allow fixing by force engagement, each dimension in cross section (or diameter) of the finger 23 is greater by a few tenths of a millimeter than the corresponding dimension of the housing 32a. In the case of FIG. 2, the finger 23 has an outside diameter which is approximately 0.3 mm greater than the inside diameter of the housing 32a illustrated.
Ainsi, il est possible d'obtenir un assemblage en grappe qui présente une section généralement constante, contrairement aux assemblages par collage de l'art antérieur où apparaissait souvent un bourrelet de colle. En outre, puisque cet emmanchement à force ne peut être effectué qu'une seule fois pour chaque doigt, on évitera les manipulations successives risquant de déformer le modèle. Thus, it is possible to obtain a cluster assembly which has a generally constant section, unlike the bonding assemblies of the prior art where a bead of glue often appeared. In addition, since this press fit can only be carried out once for each finger, we avoid successive manipulations which risk deforming the model.
Une autre différence majeure de l'assemblage conforme à l'invention provient de ce que le positionnement du modèle 20 par rapport à la conduite de coulée 30 est trés précis, ce qui améliore grandement la régularité du flux de métal en fusion lors de la coulée. Another major difference of the assembly according to the invention comes from the fact that the positioning of the model 20 relative to the casting line 30 is very precise, which greatly improves the regularity of the flow of molten metal during casting. .
L'assemblage s'effectue grâce à un déplacement du modèle 20 suivant la flèche A (figure 1) dans une direction parallèle à X-X' jusqu'à obtenir une liaison hyperstatique par emmanchement à force du doigt 23 dans le logement 32a. Plus précisement, le doigt 23 vient en butée contre le fond du logement 32a, ce qui permet de limiter les contraintes dans le modèle 20 lors de l'assemblage. D'autre part, avec un tel assemblage à force, lorsque la grappe 10 est plongée avant moulage dans un bain d'enduit de finition, soit le montage est correct et la grappe 10 reste intacte, soit le montage est défectueux (mauvaise étanchéité) et le modèle 20 correspondant se détache sous l'effet de la poussée due à l'immersion. Ainsi les modèles 10 non-conformes pourront être écartés. The assembly is carried out by moving the model 20 along arrow A (FIG. 1) in a direction parallel to XX ′ until a hyperstatic connection is obtained by force fitting the finger 23 into the housing 32a. More precisely, the finger 23 abuts against the bottom of the housing 32a, which makes it possible to limit the stresses in the model 20 during assembly. On the other hand, with such forced assembly, when the cluster 10 is immersed before molding in a bath of finishing plaster, either the assembly is correct and the cluster 10 remains intact, or the assembly is defective (poor sealing) and the corresponding model 20 becomes detached under the effect of the thrust due to the immersion. Thus non-compliant models 10 can be excluded.
En outre, puisque l'emmanchement est étanche, il n'y aura pas à la coulée de particules d'enduit entravant le flux de métal en fusion et risquant de créer des défauts par inclusion de ces particules dans la pièce. Evidemment, des particules d'enduit peuvent pénétrer entre le doigt 23 et le logement, mais elles seront nécessairement orientées dans la direction du flux de coulée. In addition, since the fitting is sealed, there will be no coating particles in the flow blocking the flow of molten metal and risking creating defects by inclusion of these particles in the part. Obviously, plaster particles can penetrate between the finger 23 and the housing, but they will necessarily be oriented in the direction of the flow of casting.
On a illustré sur la figure 3 un poste pour l'assemblage de grappes 10 telles que décrites plus haut. Is illustrated in Figure 3 a station for assembling clusters 10 as described above.
Ce poste comprend un châssis 41 monté sur roulettes, sur lequel est disposé un gabarit d'assemblage, ainsi qu'un support pour un réceptacle 50.This station comprises a chassis 41 mounted on casters, on which is placed an assembly template, as well as a support for a receptacle 50.
Ce gabarit est constitué par une colonne 43 sur laquelle un conduit 30 peut être enfilé, et par des butoirs 42 grâce auxquels des modèles 20 à emmancher suivant la flèche A (figure 1) peuvent être positionnés. This template is constituted by a column 43 on which a conduit 30 can be threaded, and by buffers 42 by which models 20 to be fitted according to arrow A (Figure 1) can be positioned.
On comprend que ce poste de montage est particulièrement économique en comparaison avec ceux de l'art antérieur puisqu'il ne comprend pas de vérins, d'appareils d'encollage, etc... We understand that this assembly station is particularly economical in comparison with those of the prior art since it does not include cylinders, sizing devices, etc.
Evidemment, l'invention n'est nullement limitée au mode de réalisation qui a été décrit ici, mais comprend tous les équivalents des moyens techniques ainsi que leurs combinaisons, si celles-ci sont effectuées selon son esprit. Obviously, the invention is in no way limited to the embodiment which has been described here, but includes all the equivalents of the technical means as well as their combinations, if the latter are carried out according to the spirit.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9116118A FR2685230B1 (en) | 1991-12-24 | 1991-12-24 | CLUSTER ASSEMBLY OF MODELS FOR LOST MODEL MOLDING OF PARTS, AND METHOD OF CLUSTER ASSEMBLY OF SUCH MODELS. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9116118A FR2685230B1 (en) | 1991-12-24 | 1991-12-24 | CLUSTER ASSEMBLY OF MODELS FOR LOST MODEL MOLDING OF PARTS, AND METHOD OF CLUSTER ASSEMBLY OF SUCH MODELS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2685230A1 true FR2685230A1 (en) | 1993-06-25 |
| FR2685230B1 FR2685230B1 (en) | 1995-04-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9116118A Expired - Fee Related FR2685230B1 (en) | 1991-12-24 | 1991-12-24 | CLUSTER ASSEMBLY OF MODELS FOR LOST MODEL MOLDING OF PARTS, AND METHOD OF CLUSTER ASSEMBLY OF SUCH MODELS. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2685230B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2377401A (en) * | 2001-05-22 | 2003-01-15 | Howmet Res Corp | Fugitive patterns for investment casting |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1220970B (en) * | 1963-09-21 | 1966-07-14 | Gruenzweig & Hartmann | Lost foam model for feeders of castings |
| US3695340A (en) * | 1970-05-04 | 1972-10-03 | Parsons John T | Multi-part combustible casting pattern having bend-resistant glue-less joints |
| US3707029A (en) * | 1970-09-25 | 1972-12-26 | John T Parsons | Superimposed modular construction of vaporizable patterns |
| US3889737A (en) * | 1974-01-04 | 1975-06-17 | Ford Motor Co | Dry sand core process for use with lost foam molding process |
| JPS6083739A (en) * | 1983-10-12 | 1985-05-13 | Toyota Motor Corp | Assembling method of pattern for investment casting mold |
| US4673023A (en) * | 1984-12-14 | 1987-06-16 | Outboard Marine Corporation | Multipart lost foam pattern and method of making same |
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1991
- 1991-12-24 FR FR9116118A patent/FR2685230B1/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1220970B (en) * | 1963-09-21 | 1966-07-14 | Gruenzweig & Hartmann | Lost foam model for feeders of castings |
| US3695340A (en) * | 1970-05-04 | 1972-10-03 | Parsons John T | Multi-part combustible casting pattern having bend-resistant glue-less joints |
| US3707029A (en) * | 1970-09-25 | 1972-12-26 | John T Parsons | Superimposed modular construction of vaporizable patterns |
| US3889737A (en) * | 1974-01-04 | 1975-06-17 | Ford Motor Co | Dry sand core process for use with lost foam molding process |
| JPS6083739A (en) * | 1983-10-12 | 1985-05-13 | Toyota Motor Corp | Assembling method of pattern for investment casting mold |
| US4673023A (en) * | 1984-12-14 | 1987-06-16 | Outboard Marine Corporation | Multipart lost foam pattern and method of making same |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 9, no. 226 (M-412)(1949) 12 Septembre 1985 & JP-A-60 083 739 ( TOYOTA JIDOSHA KK ) 13 Mai 1985 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2377401A (en) * | 2001-05-22 | 2003-01-15 | Howmet Res Corp | Fugitive patterns for investment casting |
| US6719036B2 (en) | 2001-05-22 | 2004-04-13 | Howmet Research Corporation | Fugitive patterns for investment casting |
| US6789604B2 (en) | 2001-05-22 | 2004-09-14 | Howmet Research Corporation | Fugitive patterns for investment casting |
| US6889743B2 (en) | 2001-05-22 | 2005-05-10 | Howmet Research Corporation | Fugitive patterns for investment casting |
| GB2377401B (en) * | 2001-05-22 | 2005-05-25 | Howmet Res Corp | Fugitive patterns for investment casting |
| US6986949B2 (en) | 2001-05-22 | 2006-01-17 | Howmet Corporation | Fugitive patterns for investment casting |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2685230B1 (en) | 1995-04-28 |
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| ST | Notification of lapse |
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