EP0432277B1 - Procede et dispositif de fabrication de moules a coulage unique - Google Patents

Procede et dispositif de fabrication de moules a coulage unique Download PDF

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Publication number
EP0432277B1
EP0432277B1 EP90910975A EP90910975A EP0432277B1 EP 0432277 B1 EP0432277 B1 EP 0432277B1 EP 90910975 A EP90910975 A EP 90910975A EP 90910975 A EP90910975 A EP 90910975A EP 0432277 B1 EP0432277 B1 EP 0432277B1
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EP
European Patent Office
Prior art keywords
air
compressed air
chamber
moulding
plate
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.)
Expired - Lifetime
Application number
EP90910975A
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German (de)
English (en)
Other versions
EP0432277A4 (en
EP0432277A1 (fr
Inventor
Anatoly Alexandrovich Volkomich
Nikolai Konstantinovich Chernyshev
Gennady Ivanovich Bobryakov
Georgy Mikhailovich Orlov
Boris Panteleimonovich Blagonravov
Garegin Serezhovich Garibian
Nikolai Ivanovich Bekh
Anatoly Iosifovich Yakobson
Vladimir Ivanovich Sivko
Adolf Vladimirovich Korchin
Valentin Fedorovich Mitrofanov
Valery Alexandrovich Svechnikov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NAUCHNO-PROIZVODSTVENNOE OBIEDINENIE TEKHNOLOGII AVTOMOBILNOI PROMYSHLENNOSTI (NPO "NIITAVTOPROM")
Original Assignee
NAUCHNO-PROIZVODSTVENNOE OBIEDINENIE TEKHNOLOGII AVTOMOBILNOI PROMYSHLENNOSTI (NPO "NIITAVTOPROM")
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Publication of EP0432277A1 publication Critical patent/EP0432277A1/fr
Publication of EP0432277A4 publication Critical patent/EP0432277A4/de
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Publication of EP0432277B1 publication Critical patent/EP0432277B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/10—Moulding machines characterised by the relative arrangement of the parts of same with one or more flasks forming part of the machine, from which only the sand moulds made by compacting are removed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/28—Compacting by different means acting simultaneously or successively, e.g. preliminary blowing and finally pressing

Definitions

  • the invention relates to the foundry industry and relates in particular to a method for producing disposable casting molds and an apparatus for carrying it out.
  • a method for producing single-use molds (US, A, 4313486) which consists in feeding a molding material in a direction in a direction parallel to the pattern plate into a molding chamber provided with a pattern plate. Simultaneously with the molding material supply, the molding material is pre-compressed under the action of the compressed air, which is supplied in a direction parallel to the model plate. After filling the molding chamber, the molding material is compressed by pressing.
  • an apparatus (US, A, 431 3486) which comprises a molding chamber which is formed by, arranged in pairs, an upper plate and a lower plate, side plates, a model plate and a press plate, a compressed air source and a means for supplying the Contains compressed air in the mold chamber. Cavities and channels for the passage of air through said cavities are provided in the model plate and in the pressure plates. A channel for feeding the molding material into the molding chamber is embodied in the top plate, the molding material being fed in the air flow in a direction parallel to the model plate. At the same time, from the compressed air source via the supply means
  • Compressed air is fed into the cavity of the press plate and from there passed through the channels of the press plate into the molding chamber.
  • the air from the molding chamber is released into the atmosphere via the channels dissipated in the model plate, in the top and in the bottom plate.
  • the horizontally directed air flows take the molding material particles with them and move them towards the model plate by filling the narrow, deep recesses of the models with molding material.
  • the density of the molding material is not evenly distributed over the volume of the molding chamber: the layers of molding material adjacent to the model plate have the maximum density, while the molding material lying on the press plate has a minimum density, whereby form cavities in the channels of the press plate for the passage of air in the casting mold, because the compressed air jets emerging from the channels prevent these zones of the casting mold from being filled with the molding material.
  • the molding material is compacted in the layers adjacent to the press plate; but it is impossible to find an uneven density distribution of the Completely eliminate molding materials via the volume of the casting mold and the cavities in the zones of the compressed air supply.
  • a process for the production of single-use molds (SU, A, 1060299) is known, which consists in that a molding material is fed into a molding chamber provided with a model plate by means of an air flow in a direction parallel to the model plate. Subsequently, after a period of time which is approximately 8 to 60% of the duration of the molding material supply, the molding material is pre-compressed by the compressed air, which is supplied in a direction parallel to the model plate. The final compression of the molding material is carried out by pressing.
  • the device for carrying out this method contains plates arranged in pairs which form a molding chamber, a compressed air source and a means which ensures a recurrent connection of the compressed air source to the molding chamber.
  • Four side plates, which are opposed to each other in pairs, are fixedly mounted, while two others, an upper plate and a lower plate, which are opposed to each other, are arranged to and fro, each of these plates having a cavity and channels for the passage of air through said Cavity are provided.
  • a slot is provided in one of the side plates for the molding material feed into the molding chamber.
  • a model plate is accommodated in the molding chamber, which is rigidly attached to the movable lower plate and has channels for the passage of air, which run coaxially with the channels of this plate.
  • the top plate is movably arranged over the slot for the molding material feed within the molding chamber and is provided with a means for a recurrent connection of the cavity of the plate with the compressed air source.
  • the molding material is fed via the slot in an air flow in a direction parallel to the model plate.
  • the compressed air is supplied from the air pressure source via the means for recurrently connecting it to the molding chamber into the cavity of the top plate under pressure which is higher than the pressure of the air for supplying the Molding material is in the molding chamber.
  • the compressed air is fed from the cavity of the top plate via the channels of the top plate into the molding chamber in a direction perpendicular to the model plate.
  • a pressure drop in the molding chamber also creates eddy currents as well as air currents that move in the direction of move the model plate perpendicular to it.
  • a certain amount of molding material is fed into the molding chamber, which partially fills the molding chamber on the part of the model plate, the narrow deep recesses of the model being partially filled with a loose molding material.
  • the air streams directed perpendicular to the model plate will take the molding material particles to be fed into the molding chamber and move them in the direction of the model plate.
  • the air streams which are filtered through the layers of the loose molding material that has been brought into the molding chamber before the compressed air supply begins, compress the molding material, the molding material density being distributed unevenly, and the maximum density being the molding material layers adjacent to the model plate, while the layers of molding material that are particularly removed from the model plate have a minimal density.
  • the process of filling the molding chamber with the molding material and compressing the molding material continues until the slot for the molding material feed into the molding chamber is covered by the upper layers of the molding material.
  • the air jets emerging from the channels prevent the nearby zones of the molding chamber from being filled with the molding material, so that cavities are formed in addition to the plate mentioned.
  • the top plate After filling the molding chamber with the molding material, the top plate is moved towards the model plate, whereby the molding material is compressed by pressing. Pressing enables the molding material to be compressed on the top plate and a certain increase in the uniformity of the molding material over the volume of the casting mold; as a result, the cavities in the zone of the casting mold which are arranged opposite the channels for the compressed air supply next to the press plate cannot be eliminated. After pressing, the lower plate with the model plate attached to it is lowered and the model is lifted out of the mold.
  • the present invention has for its object to provide a method for producing disposable casting molds and a device for its implementation, which allow a uniform compression of the molding material over the volume of the casting mold and through the appropriate design of the device, the production of high quality molds difficult to mold .
  • This object is achieved in that, in a method for producing single-use casting molds, which consists in feeding a molding material in a direction in a direction parallel to the model plate into a mold chamber provided with a model plate, only after a period of time which is about 8 accounts for up to 60% of the duration of the molding material feed, the molding material is pre-compressed by means of compressed air supplied, and then the molding material is compressed by pressing, according to the invention the air is removed from the molding chamber before the molding material is fed in and during the feeding thereof in a direction perpendicular to the model plate and ended simultaneously with the termination of the molding material supply, the supply of compressed air into the molding chamber taking place in a direction running parallel to the model plate and being set before the molding material supply is terminated.
  • the molding material While the molding material is being fed into the molding chamber, the molding material is exposed to the horizontal air flows mentioned deflected onto the model plate, which contributes to a better penetration of the molding material into the narrow, deep recesses of the model.
  • the necessity of supplying compressed air to the molding chamber in a direction running parallel to the model plate is due to the fact that the compressed air flows moving in the mentioned direction, by interacting with the air flows moving in the direction towards the model plate, compress the molding material in the narrow, deep recesses of the models and ensure even compression of the molding material over the volume of the casting mold.
  • the stated condition for the air discharge from the molding chamber must be observed in order to ensure a reliable movement of the air flow towards the model plate.
  • the stable air flows directed perpendicular to the model plate do not come about, while the air removal from the molding chamber within a time that is more than 1 s before the molding material is uneconomical.
  • the compressed air is preferably fed into the molding chamber within a time which is 5 to 30% of the duration of the molding material feeding.
  • the limit values mentioned for the duration of the compressed air supply to the molding chamber are optimal, because if the duration of the compressed air supply is less than 5% of the duration of the molding material supply, the effect of the compressed air is not sufficient, while for a duration of more than 30% the molding material cannot fill in the hard-to-reach areas of the model because the required amount of molding material cannot get into the molding chamber during the remaining time of the molding material supply.
  • the condition mentioned for the compressed air supply is preferably used when using large-volume mold chambers.
  • a device for carrying out the method for producing disposable casting molds comprising plates arranged in pairs and forming a mold chamber, two side plates of which are fixedly mounted opposite one another, while two others, opposite one another, back and forth are arranged movably, wherein in each of these plates a cavity and channels for air passage through said cavity are provided, in one of the remaining plates a slot for the molding material feed into the molding chamber is made, in which a rigidly attached to one of the movable plates Model plate is housed, which has channels for the passage of air, which are designed coaxially with the channels of this plate, wherein a compressed air source and a means for a recurring connection of the compressed air source to the mold chamber are provided, according to the invention a system for Air discharge, which is recurrently connected to the mold chamber, and has at least one additional plate, which by is rigidly attached to the outside of the fixed side plate and has a recess on the part of the latter, which forms an air chamber with this fixed plate, a means for
  • Such a structural design of the device for carrying out the method for producing disposable casting molds enables the implementation of a method with which the air as the molding chamber can be discharged thanks to a system for air removal provided in the device, in order in this way to uniformly compress the To ensure molding material over the volume of the mold.
  • At least one additional plate is provided in the device with a means for supplying the compressed air into the air chamber, from which it is then passed into the mold chamber, a compressed air supply is also ensured in the mold chamber in a direction running parallel to the model plate, which leads to an improvement in the filling of the narrow, deep recesses of the models with the molding material and the pre-compression of the molding material.
  • the process for producing disposable casting molds is carried out as follows.
  • the air is removed from a molding chamber provided with a model plate 0.1 to 1.0 s before the start of the molding material feed in order to initiate the formation of horizontally directed air streams in the molding chamber.
  • the air is discharged in a direction perpendicular to the model plate.
  • a molding material is then fed into the molding chamber in the air stream in a direction running parallel to the model plate, and after a period of time which is approximately 8 to 60% of the duration of the molding material supply, the molding material is pre-compressed under the action of the compressed air supplied.
  • the compressed air supply into the molding chamber takes place in a direction running parallel to the model plate and within a time which is approximately 5 to 30% of the duration of the molding material supply, ie the compressed air supply is stopped before the molding material supply is terminated.
  • the air removal from the molding chamber is continued during the molding material supply and is stopped at the same time as the molding material supply is terminated. Then the molding material is compressed by pressing.
  • the device for carrying out the method for producing disposable casting molds contains. plates 1,2 (Fig.1), 3,4 (Fig.2) 5,6 (Fig.1) arranged in pairs, which form a mold chamber 7, a compressed air source 8, a means 9 for the recurrent connection of the compressed air source 8 to the Molding chamber 7 and a system 10 for air discharge from the molding chamber 7.
  • the two side plates 3, 4 (FIG. 2) arranged opposite one another are fixedly mounted.
  • the device is provided with at least one additional plate, the number of which is selected taking into account the main dimensions of the molding chamber 7 and can be four.
  • these additional plates can be placed on the plates 1,2 (Fig.1) 3, 4 (Fig.2) accordingly.
  • the device is provided with two additional plates 11, 12 which are rigidly fastened from the outside to the fixed side plates 3, 4 by means of bolts 13.
  • Each additional plate 11, 12 has a recess on the part of the associated plate 3, 4, which forms an air chamber 14, 15 with the last-mentioned plate 3, 4.
  • Channels 16, 17 are provided in the plates 3, 4 for the compressed air supply via the corresponding air chambers 14, 15 into the molding chamber 7.
  • the two opposing plates 5, 6 are arranged such that they can move back and forth, each of them being connected to a piston rod 18 of a hydraulic cylinder (not shown in FIG. 1).
  • a cavity 19, 20 and channels 21, 22 are provided in each movable plate 5, 6 for the passage of air through the corresponding cavity 19, 20.
  • a slot 23 is provided for the molding material feed into the molding chamber 7, the molding material being fed into the slot 23 from a blow container (not shown in the figures).
  • model plates 24, 25 are accommodated, which are rigidly mounted on the fixed plates 5, 6 by means of bolts 26.
  • Each model plate 24, 25 has channels 27, 28 for the passage of air, which run coaxially with the channels 21, 22.
  • Models 30, 31 are each fastened to the model plates 24, 25 (FIG. 2) by means of bolts 29.
  • a channel 32, 33 is provided coaxially with the associated channel 28, 27 of the corresponding model plate 24, 25.
  • the means 9 (FIG. 1) for a repeatable connection of the compressed air source 8 to the molding chamber 7 is designed as a valve 34 and pipes 35, 36 which are connected to the cavities 19, 20.
  • the system 10 for discharging air from the molding chamber 7 is connected to the tap 34 and is designed in the form of a vacuum pump 37 which is connected to a vacuum container 38.
  • the system 10 for air discharge is repeatedly connected to the tap 34 by means of a pipeline 39.
  • the valve 34 is designed so that it can periodically connect the molding chamber 7 to the compressed air source 8 or to the system 10 for air discharge.
  • Each additional plate 11, 12 (FIG. 2) is provided with a means 40 for supplying compressed air to the corresponding air chamber 14, 15.
  • the means 40 represents a compressed air container 41 which is connected to a valve 42 and by means of a pipe 43 to the corresponding air chambers 14, 15.
  • the device according to the invention for carrying out the method for producing disposable casting molds has the following mode of action.
  • the cavities 19, 20 are connected to the system 10 for air removal via the pipes 35, 36 by means of the cock 34 (FIG. 1); a pressure gradient is generated between the cavities 19, 20 and the mold chamber 7, as a result of which the air is discharged from the mold chamber 7 via the channels 27, 28 and 21, 22 in a direction running perpendicular to the model plates 24, 25.
  • An air discharge in a direction perpendicular to the models 24, 25 is necessary in order to generate stable air flows in the molding chamber 7, which are directed perpendicular to the model plates 24, 25. Since the air here is an inert medium, a period of time is required for the generation of stable air flows of the required orientation, i.e. the air must be removed before the molding material 7 is fed into the molding chamber 7.
  • the air is removed from the molding chamber 0.5 s before the molding material is started.
  • this time period should be in the range of 0.1 to 1 s because it does not occur in a shorter time period than 0.1 s that stable and perpendicular air streams are generated, and because it is uneconomical to keep the air inside of a time of more than 1 s, since the currents have already developed reliably by then and the energy for the air discharge is used uselessly.
  • the overall cycle time for the manufacture of a mold is extended, reducing the performance of the device.
  • a molding material is passed through the slot 23 in the air stream into the molding chamber 7 in after the time period mentioned (0.5 s) in a direction parallel to the model plates 24, 25.
  • the molding material particles moving parallel to the model plates 24, 25 in the air flow become in the direction of the latter under the action of the air flows moving vertically in the direction of the model plates 24, 25 Model plates 24, 25 transported there, filling the narrow deep recesses of the models 30, 31.
  • the molding material is precompressed by the compressed air to be supplied.
  • this time period is selected to be 10% of the duration of the molding material supply.
  • the compressed air is fed into the air chambers 14, 15 via the pipelines 43 (FIG. 2), and from there is then passed on via the channels 16, 17 into the molding chamber 7 in a direction parallel to the model plates 24, 25.
  • the compressed air is supplied at a higher pressure than the air pressure used for the molding material supply, the compressed air supply being carried out in opposite flows via two additional plates 11, 12.
  • the compressed air is supplied in a stream which is directed parallel to the model plates.
  • a two-sided compressed air supply (in opposite flows) in mold chambers of low content as well as a one-sided compressed air supply (in one flow) in large-volume mold chambers are also possible.
  • the cross-sectional areas of the means 40 for the compressed air supply must be increased and the pressure of the compressed air increased.
  • the compressed air is fed into the molding chamber 7 in a direction parallel to the model plates 24, 25, because the compressed air flows moving in the mentioned direction interact with air flows which move in the direction of the model plates 24, 25 perpendicular to them and ensure compression of the molding material in narrow, deep recesses of the models 30, 31 and uniform compression of the molding material over the volume of the casting mold, with the exception of the zones on the plates, over their Channels 16, 17 in the chamber 7 compressed air is supplied.
  • the volume of the molding material decreases, and the air flows leading into the molding chamber 7 prevent the zones of the compressed air supply from being filled with the molding material; In this way, in addition to the plates 3, 4, via the channels 16, 17 of which compressed air is supplied, cavities and loosening occur which can only be filled with the molding material if the compressed air supply is stopped in the molding chamber 7 before the molding material supply has ended.
  • the molding material that is fed into the molding chamber 7 in the period between the termination of the compressed air supply and the cessation of the molding material supply will fill these cavities smoothly and be compressed there, ensuring an even distribution of the density over the volume of the entire casting mold.
  • the compressed air must be fed into the molding chamber 7 within a time which is approximately 5 to 30% of the duration of the molding material supply into the molding chamber 7, ie the duration of the compressed air supply should be shorter than the duration of the molding material supply. If the duration of the compressed air supply is less than 5% of the duration of the molding material supply the effect of the compressed air is not sufficiently strong, and with a duration of the air supply of more than 30%, the molding material cannot fill the cavities because the required amount of molding material will not get into the molding chamber 7 in the remaining time of the molding material supply.
  • the compressed air is fed into the molding chamber 7 within a time which is 20% of the duration of the feeding of the molding material in a direction parallel to the molding plates 24, 25.
  • the molding material feed is set through the slot 23 (FIG. 1), the air discharge from the molding chamber 7 being interrupted at the same time.
  • the cavities 19, 20 are separated from the system 10 for air removal by means of the cock 34.
  • the plates 5 and 6 are moved against each other, final compression of the molding material being achieved by pressing.
  • the cavities 19, 20 are then connected to the compressed air source 8 by means of the cock 34; at the same time the plates 5 and 6 are moved from one another and the models 30, 31 are lifted out of the mold.
  • the compressed air to be supplied via the channels 21, 22, 27, 28 generates air currents which move perpendicularly to the model plates 24, 25 in the direction of the mold and ensure smooth lifting of the models 30, 31 from the mold, without the high fine parts of it.
  • the air is discharged from the molding chamber in a direction perpendicular to the model plates, the air removal also continuing during the molding material supply.
  • the molding material with a composition of (% by weight): Bentonite - 10; Starch (binder) - 0.2; Quartz sand residue is fed in an air stream under a pressure of 0.3 MPa into a molding chamber provided with two model plates in a direction parallel to the model plates.
  • the molding material has the following strength values: compressive strength - 0.15 MPa, tensile strength - 0.015 MPa, moisture - 3 to 3.5%.
  • the molding material is fed for 1 s.
  • the molding material is then pre-compressed under the action of the compressed air to be supplied in a direction running parallel to the model plates.
  • the compressed air is supplied in opposing flows 0.5 s after the molding material supply (this means 50% of the duration of the molding material supply) within 0.2 s (20% of the duration of the molding material supply).
  • the molding material is then compressed by pressing.
  • the hardness number which is determined using a hardness meter, serves as an evaluation criterion for the quality of the compression.
  • the surface hardness of the mold is determined in points 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, which are given on the diagram of the mold shown in FIGS. 3 and 4.
  • the method according to the invention for the production of casting molds and the device for its implementation ensure a high-quality impression of the models on both side surfaces of the casting mold and a high effectiveness of the production, which are achieved in that a mold chamber two-sided molds of complicated shape are produced with a significant expansion of the nomenclature of the castings, which are produced by the process for boxless horizontal stack molds in automatic operation.
  • the present invention can find particular effective application on automated molding lines for boxless molding in the production of difficult-to-shape castings.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Studio Devices (AREA)

Claims (6)

  1. Procédé de fabrication de moules de coulée à usage unique qui consiste en ce qu'on amène dans une chambre de moulage (7) munie d'une plaque de modèle (24) un matériau de moulage dans un écoulement d'air, dans une direction parallèle à la plaque de modèle (24), seulement après une période de temps qui est à peu près égale à 8 à 60% de la durée de l'amenée du matériau de moulage on comprime préalablement le matériau de moulage au moyen d'air comprimé amené, et ensuite, on comprime le matériau de moulage par pressage, caractérisé en ce qu'avant le début et pendant l'amenée du matériau de moulage, on effectue l'évacuation d'air de la chambre de moulage (7) dans une direction perpendiculaire à la plaque de modèle (24) et on termine l'évacuation d'air simultanément avec l'achèvement de l'amenée du matériau de moulage, l'amenée d'air comprimé dans la chambre (7) de moulage se faisant dans une direction parallèle à la plaque de modèle (24) et étant terminée avant l'achèvement de l'amenée du matériau de moulage.
  2. Procédé selon la revendication 1, caractérisé en ce qu'on commence l'évacuation d'air de la chambre de moulage entre 0,1 à 1,0s avant le début de l'amenée du matériau de moulage.
  3. Procédé selon l'une des revendications 1 et 2, caractérisé en ce que l'amenée de l'air comprimé dans la chambre de moulage est effectuée pendant une période comprise entre 5 et 30% de la durée de l'amenée du matériau moulé.
  4. Procédé selon la revendication 1, caractérisé en ce que l'amenée de l'air comprimé est effectuée dans des écoulements en sens opposés.
  5. Dispositif pour la mise en oeuvre du procédé de fabrication de moules de coulée à usage unique suivant la revendication 1, comprenant des plaques (1, 2, 3, 4, 5, 6) disposées par paires et formant une chambre de moulage (7), dont deux plaques latérales (3, 4) sont montées fixes l'une en face de l'autre, tandis que deux autres plaques (5, 6) disposées l'une en face de l'autre, sont agencées de façon déplaçable selon un mouvement va-et-vient, un espace creux (19, 20) ainsi que des conduits (21, 22) pour le passage d'air à travers ledit espace creux (19, 20) étant prévus dans chacune de ces plaques, une fente (23) pour l'amenée du matériau de moulage dans la chambre de moulage (7) étant réalisée dans une des autres plaques (1 ou 2) une plaque de modèle (24) fixée de façon rigide à une des plaques mobiles et qui présente des conduits (28) pour le passage d'air qui sont réalisés de façon coaxiale avec les conduits (22) de cette plaque (6), étant logée dans la chambre, une source d'air comprimé (8) et un moyen (9) pour une liaison répétée de la source d'air comprimé (8) avec la chambre de moulage (7) étant prévus, caractérisé en ce qu'il présente un système (10) pour l'évacuation d'air, qui peut être mis en liaison avec la chambre de moulage (7) de façon répétitive, ainsi qu'au moins une plaque (11) supplémentaire qui est fixée de façon rigide de l'extérieur à la plaque latérale (3) fixe et qui présente du côté de cette dernière un évidement qui forme avec la plaque (3) fixe une chambre à air (14), un moyen (40) pour l'amenée de l'air comprimé dans la chambre à air (14) étant prévu dans la plaque (11) supplémentaire, et étant en liaison avec la source (8) d'air comprimé, et des conduits (16) pour l'amenée de l'air comprimé à travers la chambre à air (14) dans la chambre de moulage (7) étant réalisés dans la plaque (3) latérale fixe.
  6. Dispositif selon la revendication 5 pour la mise en oeuvre du procédé de fabrication de moules de coulée à usage unique, caractérisé en ce qu'une plaque de modèle (25) supplémentaire est logée dans la chambre de moulage (7), la plaque étant fixée de façon rigide à une des autres plaques mobiles (5) et présentant des conduits (27) qui s'étendent coaxialement aux conduits (21) de cette plaque (5) mobile.
EP90910975A 1989-06-29 1990-06-28 Procede et dispositif de fabrication de moules a coulage unique Expired - Lifetime EP0432277B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SU894705358A RU1780917C (ru) 1989-06-29 1989-06-29 Способ изготовлени разовых литейных форм и устройство дл его осуществлени
SU4705358 1989-06-29
PCT/SU1990/000170 WO1991000156A1 (fr) 1989-06-29 1990-06-28 Procede et dispositif de fabrication de moules a coulage unique

Publications (3)

Publication Number Publication Date
EP0432277A1 EP0432277A1 (fr) 1991-06-19
EP0432277A4 EP0432277A4 (en) 1993-07-07
EP0432277B1 true EP0432277B1 (fr) 1996-05-08

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Application Number Title Priority Date Filing Date
EP90910975A Expired - Lifetime EP0432277B1 (fr) 1989-06-29 1990-06-28 Procede et dispositif de fabrication de moules a coulage unique

Country Status (9)

Country Link
US (1) US5161603A (fr)
EP (1) EP0432277B1 (fr)
JP (1) JPH07506296A (fr)
AT (1) ATE137694T1 (fr)
DE (1) DE59010317D1 (fr)
DK (1) DK33891A (fr)
ES (1) ES2091245T3 (fr)
RU (1) RU1780917C (fr)
WO (1) WO1991000156A1 (fr)

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DK170988B1 (da) * 1992-06-10 1996-04-15 Dansk Ind Syndikat Fremgangsmåde og formmaskine til fremstilling af støbeforme eller støbeformparter af formsand
US6705382B1 (en) * 1999-12-27 2004-03-16 Disa Industries A/S Method of improving the mould quality of mould-forming machine
WO2001056723A1 (fr) * 2000-02-04 2001-08-09 Disa Industries A/S Procede et dispositif de production de moules de coulee ou de parties de moule
AT413949B (de) * 2003-06-17 2006-07-15 Boehler Bleche Multilayer Gmbh Einrichtung zur erstellung von giessformen
JP6685332B2 (ja) * 2015-06-12 2020-04-22 ディサ・インダストリーズ・アクティーゼルスカブＤＩＳＡ Ｉｎｄｕｓｔｒｉｅｓ Ａ／Ｓ 砂型造型機および鋳型製造方法

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US3293703A (en) * 1962-11-13 1966-12-27 Arthur R Taccone Vacuum molding apparatus
BE788716A (fr) * 1971-09-23 1973-01-02 Dansk Ind Syndikat Procede d'exploitation de machines automatiques de fabrication de parties de moule et installation pour la mise en oeuvre de ce procede
JPS6048261B2 (ja) * 1979-07-11 1985-10-26 株式会社豊田自動織機製作所 鋳型造型方法
SU975184A1 (ru) * 1981-05-26 1982-11-23 Московский автомеханический институт Способ изготовлени разовых литейных форм
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DK294584D0 (da) * 1984-06-15 1984-06-15 Dansk Ind Syndikat Fremgangsmaade til fremstilling af formparter
JPS6127145A (ja) * 1984-07-18 1986-02-06 Taiyo Chuki Kk 吹込み式自動抜枠造型機における下鋳型の高充填造型方法
DE3511283A1 (de) * 1985-03-28 1986-10-09 Dietmar Prof. Dr.-Ing. 5100 Aachen Boenisch Verfahren und vorrichtung zum verdichten von giessereiformstoffen
US4620584A (en) * 1985-05-24 1986-11-04 Witt Raymond H Green sand mold filling system
US4791974A (en) * 1987-05-18 1988-12-20 Dansk Industri Syndikat A/S Method and an apparatus for producing shaped bodies from particulate material

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Publication number Publication date
WO1991000156A1 (fr) 1991-01-10
DE59010317D1 (de) 1996-06-13
RU1780917C (ru) 1992-12-15
EP0432277A4 (en) 1993-07-07
DK33891D0 (da) 1991-02-27
US5161603A (en) 1992-11-10
DK33891A (da) 1991-04-29
EP0432277A1 (fr) 1991-06-19
JPH07506296A (ja) 1995-07-13
ES2091245T3 (es) 1996-11-01
ATE137694T1 (de) 1996-05-15

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