EP0295472B1 - Procédé et dispositif pour le serrage de matière de moulage dans une machine à mouler pour fonderie - Google Patents

Procédé et dispositif pour le serrage de matière de moulage dans une machine à mouler pour fonderie Download PDF

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Publication number
EP0295472B1
EP0295472B1 EP88108468A EP88108468A EP0295472B1 EP 0295472 B1 EP0295472 B1 EP 0295472B1 EP 88108468 A EP88108468 A EP 88108468A EP 88108468 A EP88108468 A EP 88108468A EP 0295472 B1 EP0295472 B1 EP 0295472B1
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EP
European Patent Office
Prior art keywords
stamps
pressure
ramming
pressure medium
model
Prior art date
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EP88108468A
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German (de)
English (en)
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EP0295472A2 (fr
EP0295472A3 (en
Inventor
Norbert Damm
Thomas Dr.-Ing. Parr
Ernst Schmitt
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BMD Badische Maschinenfabrik Durlach GmbH
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BMD Badische Maschinenfabrik Durlach GmbH
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Priority claimed from DE19873719846 external-priority patent/DE3719846A1/de
Application filed by BMD Badische Maschinenfabrik Durlach GmbH filed Critical BMD Badische Maschinenfabrik Durlach GmbH
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Publication of EP0295472A3 publication Critical patent/EP0295472A3/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/02—Compacting by pressing devices only
    • B22C15/08—Compacting by pressing devices only involving pneumatic or hydraulic mechanisms

Definitions

  • the invention relates to a method for compacting molding material in the molding box of foundry molding machines with a multi-die press plate, the individual punches of which are arranged at a distance from one another and penetrate into the back of the molding material at different depths according to the model height.
  • the aim is to achieve the same level of strength in the entire molding area.
  • wall friction on box and model surfaces on the one hand large differences in model heights or narrow, deep model contours on the other hand lead to different dimensional strengths. So there are differences in large model heights Molded parts are pressed over protruding model surfaces, whereas weakly compacted mold parts often occur in narrow and deep model contours and at the edge of the box.
  • compression In order to achieve a reasonably homogeneous compression of the mold with critical model contours, compression generally has to be carried out in two stages, the compression of the back of the molding material being able to be carried out with a multi-die press plate.
  • the purpose of multi-stamp pressing is to automatically compensate for compression differences caused by the model during the compression process. It is known from DE-OS 29 36 173 to precompact the filled sand in the molding box first by means of a press plate approaching the back of the molding material and then to carry out the post-compaction in a second step by means of press dies stored in the press plate.
  • the press rams are connected to a common pressure medium source and penetrate more or less deeply into the back of the molding material according to the model contour.
  • the object of the present invention is to improve the method described at the outset in such a way that a consistently high compression quality is obtained even with difficult contours.
  • a device is to be specified with which this method can be implemented inexpensively in practice.
  • the described method produces particularly good results if the sum of the punch cross sections on the sand side is chosen to be 20% to 70%, in particular 20% to 50%, of the mold box area. It is particularly expedient to provide more specific stamp area in the inner area, that is to say above the model, than in the edge area, in that it amounts to 20% to 50% in the edge area 50% to 100% of the associated molding box area.
  • stamp speeds have hitherto been around 0.2 to 0.7 m / s, stamp speeds above 2.0 m / s are particularly recommended for the present method, particularly 3 to 10 m / s, values of 4 to 8 m / s being particularly preferred are cheap.
  • stamp speeds have hitherto been around 0.2 to 0.7 m / s, stamp speeds above 2.0 m / s are particularly recommended for the present method, particularly 3 to 10 m / s, values of 4 to 8 m / s being particularly preferred are cheap.
  • the dynamic effects in the molding material are similar to those of gas pulse compression.
  • the molding material particles are accelerated to such an extent that, when they strike the model or model plate surface, they are compressed to a greater extent than by mechanical slow pressing due to the impact impulse.
  • the same applies to the molding material particles located under the pressing plate if one expediently also moves the pressing plate towards the molding material at the same lifting speed.
  • the press batten is expediently provided on its edge and in the area between the outer punches with projections on the underside, for example with a circumferential bar that is only interrupted by the outer punches.
  • the edge area of the mold acts as a damping device for the press plate and the individual punches connected to it, and at the same time this edge area experiences a desired additional compression.
  • stamps take place with discretely specified pressures, i.e. that instead of the previously used balancing pressure compensation, a certain support pressure is built up in each stamp, for example, in such a way that the stamps are completely moved out of the press plate before compacting and then are supported according to the model height with different levels of back pressure - especially pneumatically.
  • the press plate is then pressed together with the stamps which move relative to it against the molding material.
  • the stamps can also be set to different levels from the start according to the model profile and then - in particular hydraulic - are supported or fixed so that they essentially maintain their level relative to one another during the subsequent compaction.
  • the method according to the invention is carried out in such a way that at least the pressure medium cylinders for the stamps located within the outer stamp are each connected to a pressure source via their own pressure medium lines and via valves.
  • the individual stamps can either be pneumatically preloaded to a specific support pressure which is selected in accordance with the model contour, or the stamps are set hydraulically to different level positions in accordance with the model contour.
  • the pressure medium cylinders of the punches can each be connected to the pressure source via their own switching valves.
  • the pressure medium cylinders can be row-by-row at their one end and column-by-row at their other end. be connected column-wise pressure medium line, these lines are each connected to the supply or discharge line via valves and the control of these valves is carried out by a microprocessor according to the desired stroke positions of the punches.
  • the compressed gas pulse can be generated in a manner known per se by compressed air or by explosive gas mixtures.
  • Such a multi-stage compression offers the advantage that the compressed gas flowing through the molding material, on the one hand, brings about fluidization and, on the other hand, pre-compression of the molding material. Both effects improve the compression properties of the mold.
  • the pressure gas pulse can be brought into effect before and / or during pressing.
  • the pressure level and the pressure curve can be as high as, or significantly below, that of pure pulse compression. It is also within the scope of the invention to allow gas to escape from the molding box, in particular via the model plate, or to actively aspirate it during compression.
  • the press head can either be installed in a pressure vessel, which adjoins the filling frame.
  • the press head expediently has a valve plate which interacts with a corresponding valve seat of the pressure container in order to open or shut off the connection of a pressure source which is under pressure to the molding box. So that the gas pulse can communicate to the molding material without large flow losses, it is recommended that the compressed gas not only between the press head and the filling frame, but also through corresponding openings of the press head can flow through it.
  • the press head itself can also be designed as a pressure vessel and connected to a pressure source.
  • a tight connection of the press head to the filling frame must be ensured, for example by means of a sliding seal between the two parts.
  • Figures 1 and 2 first show a model plate 1 with model 2 and a molding box 3 placed on the model plate 1 and a filling frame 4 placed thereon.
  • the loosely poured molding sand is designated by 5.
  • a compression unit 6 in the form of a Veil stamp press head.
  • individual punches 7 are distributed relatively evenly over the cross section of the molding box, expediently have a round cross section and are spaced apart from one another by an amount corresponding to their diameter. They traverse a horizontal press plate 8, which forms the lower end of a box-shaped compression head 9. At least the lower cross section of the compression head 9 is dimensioned so that it fits into the filling frame 4.
  • the outer edge of the press plate 8 is formed by downwardly projecting strips 8a, which at the same time form elongated guide bushes for the external punches.
  • a pressure medium cylinder 10 is arranged within the compression head 9, each of which is connected to a pressure source 12 via a line 11.
  • a lifting table (not shown in the drawing) is provided for raising the molding box against the compression head 9 or, what is more expedient, the compression head 9 can be moved hydraulically into the filling frame 4 which remains at rest via a press cylinder 13 arranged above.
  • the individual pressure medium cylinders 10 are prestressed with different pneumatic pressures, specifically with discrete values that are prescribed as a function of the model contour.
  • the external punches above the model-free space are pre-stressed with 4 bar, the neighboring punches with about 1 bar and the inner punches arranged above the model recess with about 3 bar compressed air.
  • the individual prestressing of the individual cylinders 10 takes place by means of a schematically indicated electrical individual control 14, which can be program-controlled depending on the model.
  • the entire compression head 9 is accelerated to a speed of about 7 m / s, the individual punches 7 first penetrating into the back of the molding material.
  • the subsequent press plate 8 By overtaking the subsequent press plate 8, by its spaced arrangement and by its high lifting speed ensures that the prescribed maximum stroke difference ⁇ H / H of at least 30% is set at the end of the compression process.
  • the hydraulic cylinder 13 is again pressurized with oil.
  • the overpressure present in the cylinders 10 automatically ensures that the punches 7 are advanced to the position shown in FIG. 1.
  • Known monitoring units can automatically bring the pressure in individual cylinders 10 back to the prescribed level.
  • Fig. 2 shows an alternative to the pressure supply to the cylinders 10 compared to Fig. 1, in that each cylinder 10 has its own, electrically operated inlet valve 15 and in which all these valves open into a common pressure chamber 16 within the compression head 9.
  • the pressure chamber 16 stands over an on or.
  • Outlet valve 17 with a pressure medium source 12 or with the atmosphere in connection.
  • valves 15 are connected to an electrical selection device 20. It allows to close those valves 15, the cylinders 10 of which have reached the desired preload pressure, during the pressure increase in the pressure chamber 16.
  • the system shown in FIG. 3 is particularly suitable for a hydraulic loading of the cylinders in such a way that the punches 7 are set to different height positions before compression and more or less can be fixed.
  • the individual cylinders as a two-dimensional matrix with a field arrangement of several columns, for example 1, 2, 3 and 4 several rows, for example A, B, C and D.
  • the series-connected cylinder connections of the columns are located at the upper end of the cylinder and lie at right angles to the cylinder connections of the series connected in series at the lower cylinder ends.
  • Each column S and each row R can be hydraulically switched on and off with a two-way valve V1, V2 ...
  • the image of the model height contour is entered into the control program in a model-coded stroke data record and is available for the duration of the model impressions for individual control of the individual stamps.
  • the model-coded stroke data record needs to be changed.
  • FIGS. 4 to 7 show molding machines with which the previously described method is carried out in combination with an air pulse acting on the molding material. Depending on its strength, this air pulse causes fluidization, but preferably also pre-compression of the molding material.
  • the entire press head 6 with the compression head 9 and the press cylinder 13 is installed in a pressure container 21.
  • the pressure vessel 21 has a valve seat 22 which interacts with a head plate 23 of the compression head 9, which acts as a valve disk, with the interposition of a seal 22a.
  • the pressure container 21 can enter a closed upper chamber 21a, which is connected to a compressed air source 24, and a lower chamber 21b, which is in airtight connection with the molding space formed by molding box 3 and filling frame 4, can be divided.
  • the function is as follows: First, the chamber 21a is filled with compressed gas, in particular compressed air, the top plate 23 of the compression head 9 sealing the chamber 21a via appropriate sealing surfaces. Then the hydraulic cylinder 13 is reversed so that the compression head 9 moves down.
  • the chamber 21 opens and the compressed gas in it flows with simultaneous downward movement of the compression head 9 and reaches both along the outer edge gap between the compression head and the pressure vessel 21 and through gaps between the individual punches 7 and the pressure plate 8 to the first still loose molding material 5.
  • the molding material 5 is fluidized by and when the plunger 7 is immersed there is first the positive effect of a reduction in friction. Furthermore, the compressed gas flowing through the molding material effects a pre-compression in a manner known per se.
  • the final compression takes place in the manner already described by the punches 7 penetrating into the molding material at different depths and finally by the press plate 8.
  • the compressed gas can of course also be supplied outside the compression head 9 in the molding space.
  • the compressed gas can also be moved laterally via valves, not shown be introduced into the lower region of the pressure container 21 above the filling frame 4.
  • Figures 5 to 7 show another design that works with combined compression.
  • the press head 6, that is to say its compression head 9 is itself designed as a pressure vessel.
  • a chamber 9a is formed in the compression head 9, which on the one hand is to be pressurized via a pressurized gas connection 24 and, on the other hand, can be opened to the molding space via numerous valves 25, only one of which is shown in the drawing.
  • the compression head 9 is provided on the outer edge of the press plate 8 formed by the strips 8a with sealing lips 26 which seal it against the full frame 4.
  • the chamber 9a is connected via connections 27 to the underside of all pressure medium cylinders 10, so that it is not only responsible for the generation of the pressure gas pulse, but also for the lifting of the stamps 7.
  • the pressure medium cylinders 10 are accommodated directly in the chamber 9a, therefore simple cross bores at the lower end of the cylinders 10 are sufficient for the connections 27.
  • Figure 5 shows the beginning of the compression process.
  • the compression head 9 is just so far immersed in the filling frame that the sealing lips 26 seal it against the filling frame 4.
  • the pressure medium cylinders 10 are depressurized from above, whereas the chamber 9a has an overpressure via the external pressure gas source 24. This excess pressure is transferred via the connections 27 to the lower displacement of the cylinders 10 and holds all the individual stamps 7 in the upper stroke position shown.
  • FIG. 6 shows the following compression section: Individual cylinders 10 were subjected to discrete counterpressures, preferably gas pressures, on their upper side via their connecting line 11, so that individual punches 7 immersed in the molding material to different depths according to the contour of the model 2.
  • discrete counterpressures preferably gas pressures
  • valves 25 in the chamber 9a were opened, as a result of which the gas under pressure flows into the lower part of the compression head 9, flows around the punches 7 and penetrates into the molding material. This leads to the fluidization already described and the easier penetration of the punches 7 into the molding material surface and to a certain pre-compression of the molding material.
  • exhaust air nozzles 28 can discharge the gas originating from the pressure pulse and the shaped air of the molding material liberated during the subsequent mechanical compression. This air discharge can additionally by active air extraction before and / or during the Compressed are supported by connecting the exhaust air nozzles 28 to a vacuum source.
  • FIG. 7 shows the arrangement after the compression has ended, that is to say after the compression head 9 has been pressed into its lower end position by the hydraulic cylinder 13 in the manner described at the outset, a maximum stroke difference of at least 30% based on the mold box height being maintained between the individual stamps 7 becomes.
  • the fluidization and pre-compression effect by the gas pulse is effective due to the high stamp speeds at least during the main part of the stroke movement of the compression head 9.
  • the duration of action of the gas pulse can be optimally adapted to the other process parameters by corresponding control of the valves 25. It may also be expedient to make the air pulse relatively weak, so that it only leads to fluidization of the molding material without pre-compression.
  • the advantage of the described invention is that the individual control of the individual punches or their different preload in the sense of a high maximum stroke difference between the individual punches results in a much more homogeneous compression than before, even with problematic model contours.
  • the invention also extends to boxless molding, the molding box being stripped or disassembled after compression.
  • the invention is also suitable for combination with other precompression processes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Claims (31)

  1. Procédé pour serrer une matière de moulage dans des châssis de machines de moulage pour fonderie possédant un plateau de pression à multiples poinçons, les poinçons étant disposés à distance les uns des autres et pénétrant à des profondeurs variables dans le côté dorsal de la matière de moulage, suivant la hauteur du modèle, procédé selon lequel le serrage est initialement effectué seulement par les poinçons, sollicités dans le sens du serrage par un fluide de pression, caractérisé en ce que l'on alimente en fluide de pression au moins les poinçons (7) situés à l'intérieur, chacun individuellement, suivant le contour du modèle (2), on utilise ensuite le plateau de pression (8) en plus pour le serrage et on produit son déplacement à peu près jusqu'au bord supérieur du châssis de moulage et que, à la fin du serrage, on respecte une différence de course maximale, entre les différents poinçons (7), d'au moins 30 % et de préférence d'au moins 40 % de la hauteur du châssis de moulage.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on respecte une différence de course maximale d'au moins 50 % de la hauteur du châssis de moulage entre les différents poinçons.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que, pour la somme des sections de poinçon côté sable, on choisit une valeur correspondant à 20 - 70 %, en particulier de 20 - 50 % de l'aire du châssis de moulage.
  4. Procédé selon une des revendications précédentes, caractérisé en ce que, pour la somme des sections de poinçon côté sable, on choisit une valeur de 20 - 50 % de l'aire correspondante du châssis de moulage dans la zone intérieure et une valeur de 50 - 100 % de l'aire correspondante du châssis de moulage dans la zone marginale.
  5. Procédé selon une des revendications précédentes, caractérisé en ce que la vitesse de déplacement d'une tête de serrage (9), contenant les poinçons (7) et le plateau de pression (8), est supérieure à 2,0 m/s et est en particulier de 3 à 10 m/s, de préférence de 4 à 8 m/s.
  6. Procédé selon une des revendications précédentes, caractérisé en ce que l'énergie cinétique du plateau de pression (8) et de ses poinçons (7) à la fin de la course de serrage est encaissée, tout au moins en majeure partie, par la matière de moulage sur le bord du châssis (3).
  7. Procédé selon une des revendications précédentes, caractérisé en ce que l'alimentation différenciée en pression des poinçons (7) s'effectue sous des pressions discrètes préfixées.
  8. Procédé selon une des revendications précédentes, caractérisé en ce que, avant le serrage, on fait sortir les poinçons (7) complètement hors du plateau de pression (8), on les appuie ensuite au moyen de contre-pressions différentes, en particulier pneumatiques, puis on presse le plateau de pression (8) avec les poinçons (7), se déplaçant par rapport au plateau, contre la matière de moulage (5).
  9. Procédé selon une des revendications 1 à 7, caractérisé en ce que l'on charge les poinçons (7) d'un côté sous une pression constante dans le sens de l'extension pour le serrage et on les appuie de l'autre côté au moyen de contre-pressions discrètes préfixées suivant le contour du modèle.
  10. Procédé selon une des revendications 1 à 7, caractérisé en ce que l'on ajuste les poinçons (7) à différents niveaux suivant la hauteur du modèle, et on les appuie au moyen d'une même contre-pression, en particulier hydraulique, de sorte qu'ils conservent essentiellement leurs niveaux les uns par rapport aux autres pendant le serrage.
  11. Dispositif pour la mise en oeuvre du procédé selon une des revendications 1 à 10, comprenant un sommier de pression (10) qui contient de nombreux poinçons (7) répartis sur la section du châssis de moulage, poinçons qui sont chacun guidés dans un vérin (10) mû par un fluide de pression et peuvent être étendus pour faire saillie du plateau de pression (8) formant la fermeture inférieure du sommier de pression (6), caractérisé en ce qu'au moins les vérins (10) pour les poinçons (7) situés à l'intérieur des poinçons extérieures, sont raccordés individuellement à une source de pression (12) par des canalisations de fluide de pression et des soupapes qui leur sont propres.
  12. Dispositif selon la revendication 11, caractérisé en ce que les vérins (10) sont raccordés chacun à la source de pression (12) par une soupape pilote (15) qui leur est propre.
  13. Dispositif selon la revendication 11, caractérisé en ce que les vérins (10) sont raccordés par une de leurs extrémités suivant une disposition ligne par ligne et par leurs autres extrémités suivant une disposition colonne par colonne à des canalisations de fluide de pression correspondant chacune respectivement à une ligne et à une colonne, et que ces canalisations sont raccordées individuellement par des soupapes (V₁, V₂, V₃...; VB, VC....) à une canalisation d'alimentation en fluide de pression et à une canalisation d'évacuation de fluide de pression respectivement.
  14. Dispositif selon une des revendications 11 à 13, caractérisé en ce que la commande des soupapes (14; 15, V₁...; VA...) s'effectue par un microprocesseur suivant les pressions de précharge désirées ou suivant les positions d'extension désirées des poinçons (7).
  15. Dispositif selon une des revendications 11 à 14, caractérisé en ce que l'ajustement des positions d'extension désirées s'effectue de façon échelonnée par des courses de dosage successives de même amplitude.
  16. Dispositif selon une des revendications 11 à 15, caractérisé en ce que le dessous du plateau de pression (8) présente, sur son bord et entre les poinçons extérieurs, une partie saillante faisant tout le tour ou plusieurs parties saillantes séparées (8a).
  17. Dispositif selon la revendication 16, caractérisé en ce que la partie saillante ou les parties saillantes (8a) ont une largeur de 50 à 100 mm et une hauteur de 50 à 130 mm.
  18. Dispositif comprenant un plateau de pression (8) dont le bord présente, sur le dessous, une partie saillante faisant tout le tour ou plusieurs parties saillantes séparées (8a), selon la revendication 16 ou 17, caractérisé en ce que la partie saillante (8a) ou les parties saillantes sont montées verticalement réglables par rapport au plateau de pression (8) en vue de la création de saillies différentes.
  19. Dispositif selon la revendication 18, caracrérisé en ce que le réglage de la partie saillante (8a) ou des parties saillantes s'effectue par voie pneumatique.
  20. Procédé selon une des revendications 1 à 10, caractérisé en ce que l'on combine le serrage mécanique par pressage, décrit dans ces revendications, avec l'action d'une impulsion de gaz sous pression, produite à l'aide d'air comprimé ou par explosion de mélanges gazeux détonants.
  21. Procédé selon la revendication 20, caractérisé en ce que l'on fait agir l'impulsion de gaz sous pression avant et/ou pendant le pressage.
  22. Procédé selon la revendication 20 ou 21, caractérisé en ce que, pendant le serrage, on produit l'aspiration de gaz hors du châssis de moulage (3), en particulier à travers la plaque-modèle (1).
  23. Dispositif pour la mise en oeuvre selon la revendication 20 ou 21, comprenant un sommier de pression (6) qui contient de nombreux poinçons (7) répartis sur la section du châssis de moulage, poinçons qui sont chacun guidés dans un vérin (10) mû par un fluide de pression et peuvent être étendus pour faire saillie du plateau de pression (8), lequel constitue la fermeture inférieure du sommier de pression (6), caractérisé en ce que le sommier de pression (6) est incorporé dans un caisson de pression (21) qui peut être raccordé de manière étanche à la rehausse (4) du châssis de moulage.
  24. Dispositif selon la revendication 23, caractérisé en ce que le sommier de pression (6) présente une tête de soupape (23) qui coopère avec un siège de soupape (22) du caisson de pression (21) pour établir ou couper la liaison d'une source de pression, présentant une surpression, avec le châssis de moulage (3).
  25. Dispositif selon la revendication 23 ou 24, caractérisé en ce que le sommier de pression (6) présente des orifices de passage dans la région de sa tête de serrage (9).
  26. Dispositif pour la mise en oeuvre du procédé selon la revendication 20 ou 21, comprenant un sommier de pression (6) qui contient de nombreux poinçons (7) répartis sur la section du châssis de moulage, poinçons qui sont chacun guidés dans un vérin (10) mû par un fluide de pression et peuvent être étendus pour faire saillie du plateau de pression (8), lequel constitue la fermeture inférieure du sommier de pression (6), caractérisé en ce que le sommier de pression (6) contient un caisson de pression (9a) et est raccordé à une source de pression (24).
  27. Dispositif selon la revendication 26, caractérisé en ce que le caisson de pression (9a) est disposé dans une partie du sommier de pression (6) contenant les vérins (10).
  28. Dispositif selon la revendication 26 ou 27, caractérisé en ce que le caisson de pression (9a) communique par des soupapes (25) avec l'espace de moulage formé par le châssis (3) et la rehausse (4).
  29. Dispositif selon une des revendications 26 à 28, caractérisé en ce que le sommier de pression (6) peut être raccordé de façon étanche à la rehausse (4).
  30. Dispositif selon la revendication 29, caractérisé en ce que le sommier de pression (6) plonge dans la rehausse (4) en étant étanché par rapport à elle au moyen de lèvres d'étanchéité (26) s'étendant le long de la paroi interne de la rehausse (4).
  31. Dispositif selon une des revendications 23 à 30, caractérisé en ce que des canaux d'échappement d'air (28) sont ménagés dans la plaque-modèle (1) et/ou dans le modèle (2).
EP88108468A 1987-06-13 1988-05-27 Procédé et dispositif pour le serrage de matière de moulage dans une machine à mouler pour fonderie Expired - Lifetime EP0295472B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3719846 1987-06-13
DE19873719846 DE3719846A1 (de) 1987-06-13 1987-06-13 Verfahren und vorrichtung zum verdichten von formstoff in giesserei-formmaschinen
DE19873740185 DE3740185A1 (de) 1987-06-13 1987-11-27 Verfahren und vorrichtung zum verdichten von formstoff in giesserei-formmaschinen
DE3740185 1987-11-27

Publications (3)

Publication Number Publication Date
EP0295472A2 EP0295472A2 (fr) 1988-12-21
EP0295472A3 EP0295472A3 (en) 1989-06-21
EP0295472B1 true EP0295472B1 (fr) 1992-01-15

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EP88108468A Expired - Lifetime EP0295472B1 (fr) 1987-06-13 1988-05-27 Procédé et dispositif pour le serrage de matière de moulage dans une machine à mouler pour fonderie

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Country Link
US (1) US4915159A (fr)
EP (1) EP0295472B1 (fr)
JP (1) JPH0771721B2 (fr)
DE (2) DE3740185A1 (fr)
ES (1) ES2028178T3 (fr)

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DE4419300A1 (de) * 1994-06-01 1995-12-07 Kuenkel Wagner Service Und Ver Verfahren und Vorrichtung mit aktiv steuerbarer Membran-Preßeinheit

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JP2794476B2 (ja) * 1990-03-30 1998-09-03 新東工業株式会社 分割スクイズフート式の鋳型造型機
ES2048635B1 (es) * 1991-10-30 1996-07-01 Erana Agustin Arana Cabezal para maquinas de moldeo de cajas de arena por impacto de aire.
CH686412A5 (de) * 1992-03-10 1996-03-29 Fischer Georg Giessereianlagen Verfahren zum Verdichten von Formsand fuer Giessformen.
JPH08164444A (ja) * 1994-12-09 1996-06-25 Sintokogio Ltd 鋳型造型機
DE19540466A1 (de) * 1995-03-17 1996-09-19 Kuenkel Wagner Serv & Vertrieb Sandformqualität durch Ölstrommessung zum Preßhaupt
USH1769H (en) * 1995-06-06 1999-01-05 The United States Of America As Represented By The Secretary Of The Air Force Optimized recursive foundry tooling fabrication method
RU2172656C2 (ru) * 1995-06-16 2001-08-27 Синтокогио, Лтд. Устройство и способ изготовления литейных форм
DE19652308B4 (de) * 1995-12-15 2007-03-01 Künkel-Wagner Prozesstechnologie GmbH Dynamische Iterative Stempel-Regelung des Preßvorganges beim Vielstempelpressen
US5794681A (en) * 1996-06-07 1998-08-18 Sintokogio, Ltd. Molding machine
DE69707094T2 (de) * 1996-12-17 2002-07-04 Loramendi, S.A. Luftdruckimpuls-Formmaschinen
JPH11333546A (ja) 1998-05-22 1999-12-07 Sintokogio Ltd 砂型加圧用加圧装置
CN1261256C (zh) * 1999-11-04 2006-06-28 新东工业株式会社 砂型的造型装置和方法
JP3413798B2 (ja) * 2000-01-14 2003-06-09 新東工業株式会社 枠付造型装置の造型方法及び造型システム
CN1214881C (zh) * 2000-02-17 2005-08-17 新东工业株式会社 充填铸造型砂的装置和方法
AU2000232748A1 (en) * 2000-03-20 2001-10-03 Georg Fischer Disa A/S Method and apparatus for producing two-part moulds
JP3407879B2 (ja) * 2000-04-13 2003-05-19 新東工業株式会社 鋳物砂の充填圧縮方法およびその装置
MXPA01012793A (es) * 2000-04-13 2003-07-21 Sintokogio Ltd Metodo y aparato para compactar arena de moldeado.
DE10024930A1 (de) * 2000-05-19 2001-11-22 Josef Mertes Verfahren und Vorrichtung zum Verdichten von Formstoffen z. B. Giesserei-Formsand
CN1310718C (zh) * 2001-03-16 2007-04-18 新东工业株式会社 压实型砂的方法和装置
KR100893642B1 (ko) * 2001-08-06 2009-04-17 신토고교 가부시키가이샤 주형 조형기를 모니터링하는 방법 및 시스템
JP2008018745A (ja) * 2006-07-10 2008-01-31 Mitsui Eng & Shipbuild Co Ltd 水中清掃ロボット
CN104190877B (zh) * 2014-09-22 2016-10-05 江铃汽车股份有限公司 一种型砂紧实装置
DE102015205058A1 (de) * 2015-03-20 2016-09-22 Gelson G. Montero Verfahren und Vorrichtung zum Herstellen einer Gussform für den Sandguss
EP3610966B1 (fr) * 2018-03-27 2023-10-04 Künkel Wagner Germany GmbH Procédé et machine de production d'une partie de moule

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4419300A1 (de) * 1994-06-01 1995-12-07 Kuenkel Wagner Service Und Ver Verfahren und Vorrichtung mit aktiv steuerbarer Membran-Preßeinheit
DE4419300C2 (de) * 1994-06-01 1999-05-20 Kuenkel Wagner Prozesstechnolo Verdichtungsverfahren mit abwärts bewegbarer Membran-Preßplatte

Also Published As

Publication number Publication date
DE3740185A1 (de) 1989-06-08
US4915159A (en) 1990-04-10
JPS645642A (en) 1989-01-10
JPH0771721B2 (ja) 1995-08-02
DE3867717D1 (de) 1992-02-27
EP0295472A2 (fr) 1988-12-21
EP0295472A3 (en) 1989-06-21
ES2028178T3 (es) 1992-07-01

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