EP0144727B1 - Installation de moulage - Google Patents

Installation de moulage Download PDF

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Publication number
EP0144727B1
EP0144727B1 EP84113174A EP84113174A EP0144727B1 EP 0144727 B1 EP0144727 B1 EP 0144727B1 EP 84113174 A EP84113174 A EP 84113174A EP 84113174 A EP84113174 A EP 84113174A EP 0144727 B1 EP0144727 B1 EP 0144727B1
Authority
EP
European Patent Office
Prior art keywords
mold
mold making
flask
plate carrier
plant
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
Application number
EP84113174A
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German (de)
English (en)
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EP0144727A1 (fr
Inventor
Eugen Dipl.-Ing. Bühler
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP0144727A1 publication Critical patent/EP0144727A1/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 a molding system with a molding machine for producing boxless casting molds from molding sand containing binding clay, with a sand bunker which has a vertically adjustable, closable shooting and pressing grate at its lower end, a molding frame and a hollow model plate carrier connected to at least one air line via a valve device .
  • a molding machine of this type is known from DE-A-2 844 464.
  • the molding sand is shot in a mold frame according to the vacuum closing principle and, if necessary, pneumatically compressed using the air blast pulse method and mechanically pressed into a mold half.
  • this known molding machine is designed as a high-performance molding machine and is intended for series production of only one identical mold half. For this reason, two molding machines work together in pairs, one of which only produces the lower and the other only the upper mold halves.
  • the invention is therefore based on the object of providing an appropriate molding plant on which the sand bales of the lower and upper molds can be produced alternately.
  • the mold frame consists of a lower box and an upper box, the empty upper box is located above the lower box and surrounds the sand bunker during the manufacture of the lower mold half and that the molding machine has a turning device for the model plate carrier and model plates which are covered on both sides has a turning device for the lower box.
  • the molding plant according to the invention advantageously takes up little space and is so low that deep mold pits and foundations can be dispensed with and, consequently, placement in the ring area is also possible in smaller foundries with low halls.
  • the concept according to the invention also makes it possible to fall back on as many already existing and tried and tested components of different types of molding plants, whereby development and construction costs as well as later maintenance and repair costs can be kept low.
  • the measures according to the invention offer the possibility of inserting cores before the mold is closed and transporting them away via a casting and cooling section to an unpacking station.
  • the molding system comprises a vacuum shooting molding machine with a sand bunker 1, the at least lower part of which is vertically adjustable and which has a closable shooting and pressing grate 2 at its lower end and a venturi-like wall recess above it.
  • the adjustable lower part of the sand bunker is surrounded in the starting position by a lower box 3 and an upper box 4, which are arranged one above the other and are vertically adjustable by means of their own cylinder units, not shown.
  • a hollow model plate carrier 5, which is covered on both sides with model plates, is mounted under the shooting and pressing grate so as to be rotatable about a horizontal axis.
  • the cavity of the model plate carrier is divided by a partition 6 into two chambers 7 and 8, which can be acted upon independently by compressed air or vacuum.
  • the pressure prevailing in the chamber in each case propagates into the molding space in a known manner through the air passage openings provided in the pattern plate and in the pattern.
  • the model plate carrier can also be moved horizontally into one of the possible positions according to FIG. 7, which are determined by the respective local conditions at the place of use.
  • the molding machine has a lifting table 9 in the molding station under the model plate carrier and next to the molding station after a core insertion station 10. It is also equipped with a turning device which turns the lower box moving out of the molding station by 180 ° before being placed on the table of the core insertion station.
  • a push plate 11 which pushes the ready-to-cast bale mold onto a pouring and cooling section which begins next to the forming station and which advantageously consists of a single-strand roller conveyor 12, the drive and brake rollers of which can be set with couplings adjustable for the transmission of a definite drive or braking force are provided.
  • lower box 3 and upper box 4 are first moved downwards by their cylinder units until the lower edge of lower box 3 with model plate carrier 5 or the model plate fastened thereon, and the upper edge with the shooting grate 2 in an airtight system. Then the shooting grate 2 is moved to the open position and jerky vacuum is generated in the chamber 7 above.
  • the molding sand enclosed in the lower box is mechanically compressed again, if necessary according to an air pressure impulse compression known from DE-PS-2 844 464, by lowering the closed grate, which now acts as a press grate (FIG. 2), the sand bunker 1 being piston-shaped in the Box engages.
  • the sand bunker 1 After pressing, the sand bunker 1 is lifted so far, taking the mold boxes 3, 4, that the lower box 3 can be moved laterally out of the molding station via the model, whereby it is turned through 180 ° before being placed on the table of the core insertion station. Simultaneously with the lower box, the model plate carrier 5 is turned through 180 ° (FIG. 3).
  • the upper box 4 is now moved into the position shown in FIG. 4 and filled with sand in the manner already described, compacted again and lifted off the model. Then the model plate is turned over and moved laterally out of the molding station into one of the positions shown in broken lines in FIG. 7, which are determined by the given local space conditions of the foundry.
  • the lower box 3 into which cores may have been inserted in the meantime, is pushed under the upper box 4 interacting with the sand bunker 1 and pressed against it by the lifting table 9 (FIG. 5).
  • the mold boxes 3 and 3 which are aligned coaxially with the sand bunker 1, are raised further into the position according to FIG. 6, in which both comprise the sand bunker in the manner of a cylinder jacket, which comprises a piston.

Claims (7)

1. Installation de moulage avec une machine à mouler pour la fabrication de moules de coulée dépourvus de châssis et réalisés en sable de moulage, notamment argileux, comportant une trémie à sable (1) pourvue à son extrémité inférieure d'une grille de soutirage et de pressage (2) pouvant se régler en hauteur et se fermer, un cadre de moulage et un support de modèles (5) qui est creux et relié à au moins une conduite d'air par un dispositif à soupape, caractérisée en ce que le cadre de moulage se compose d'une boîte inférieure (3) et d'une boîte supérieure (4), la boîte supérieure (4) se trouvant à vide au-dessus de la boîte inférieure (3) et autour de la trémie à sable (1) lors de la fabrication du demi-moule inférieur, et en ce que la machine à mouler comporte un dispositif de retournement du support de modèles (5) recouvert de plaques modèles sur ses deux faces, et un dispositif de retournement de la boîte inférieure (3).
2. Installation selon la revendication 1, caractérisée par une station (10) d'insertion de noyaux qui est disposée à côté de la station de moulage et sur laquelle la boîte inférieure (3) est déposée en position retournée avant la mise en oeuvre de la boîte supérieure (4).
3. Installation selon l'une des revendications précédentes, caractérisée en ce que le support creux de modèles (5) est subdivisé par une cloison (6) en au moins deux chambres (7, 8).
4. Installation selon l'une des revendications précédentes, caractérisée en ce que la machine à mouler comporte une table élévatrice (9) prévue en dessous du support de modèles (5).
5. Installation selon l'une des revendications précédentes, caractérisée en ce que la machine à mouler est équipée d'un plateau pousseur (11) pour transférer les moules fermés sur une ligne de coulée et de refroidissement disposée en aval du poste de moulage.
6. Installation selon la revendication 5, caractérisée en ce que la ligne de coulée et de refroidissement est constituée par un convoyeur à une rangée de rouleaux (12) dont les rouleaux d'entraînement et de freinage sont équipés d'embrayages à force réglable.
7. Installation selon la revendication 1, caractérisée en ce que, pour dégager le moule, la boîte inférieure (3) contenant le demi-moule inférieur est appliquée sous la boîte supérieure (4) contenant le demi-moule supérieur et se trouvant engagée sur la trémie à sable (1), et en ce que les deux boîtes sont amenées dans une position (fig. 5, 6) où elles entourent la trémie à sable (1).
EP84113174A 1983-11-02 1984-11-02 Installation de moulage Expired EP0144727B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3339620A DE3339620C1 (de) 1983-11-02 1983-11-02 Formanlage
DE3339620 1983-11-02

Publications (2)

Publication Number Publication Date
EP0144727A1 EP0144727A1 (fr) 1985-06-19
EP0144727B1 true EP0144727B1 (fr) 1988-02-24

Family

ID=6213272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113174A Expired EP0144727B1 (fr) 1983-11-02 1984-11-02 Installation de moulage

Country Status (6)

Country Link
US (1) US4586555A (fr)
EP (1) EP0144727B1 (fr)
JP (1) JPS61500258A (fr)
DE (1) DE3339620C1 (fr)
DK (1) DK299285D0 (fr)
WO (1) WO1985001899A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339941A1 (de) * 1983-11-04 1985-05-15 Forma-Bühler GmbH Automatische Formanlagen, 8900 Augsburg Verfahren und vorrichtung zur herstellung von aus zwei formhaelften bestehenden kastenlosen giessformen
DE3437702C1 (de) * 1984-10-15 1985-06-13 Eugen Dipl.-Ing. 8877 Burtenbach Bühler Verfahren und Formanlage zur Herstellung von horizontal geteilten kastenlosen Sandblock-Gießformen
DE3507179C1 (de) * 1985-03-01 1985-10-31 Eugen Dipl.-Ing. 8877 Burtenbach Bühler Verfahren und Vorrichtung zur Herstellung von kastenlosen Giessformen
DE3626486A1 (de) * 1986-08-05 1988-02-11 Buehler Eugen Verfahren und vorrichtung zur herstellung geteilter, kastenloser giessformen
DE3742766C2 (de) * 1987-12-17 1996-04-04 Buehler Eisengieserei Gmbh Verfahren und Vorrichtung zur maschinellen Herstellung von aus umweltunschädliche Binder enthaltendem Modellsand und Füllsand bestehenden kastenlosen Gießformteilen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712489C3 (de) * 1977-03-22 1980-07-24 Gustav Zimmermann Maschinenfabrik Gmbh, 4000 Duesseldorf Vorrichtung zum Einfüllen und Verdichten des Formsandes bei der Herstellung von Sandformen für Gießereizwecke
DE2844464C2 (de) * 1978-10-12 1983-03-24 Bühler, Eugen, Dipl.-Ing., 8871 Burtenbach Verfahren und Vorrichtung zum Verdichten von Gießformen
IT1111713B (it) * 1979-03-12 1986-01-13 Hansberg Julius Foramtrice a sparo e compressione in staffe
DE2923044C2 (de) * 1979-06-07 1987-05-27 Eugen Dipl.-Ing. 8877 Burtenbach Bühler Verfahren und Vorrichtung zur Herstellung von geteilten Komposit-Sandblock-Gießformen
DE3020349C1 (de) * 1980-05-29 1981-10-01 Eugen Dipl.-Ing. 8871 Burtenbach Bühler Verfahren und Vorrichtung zum Transportieren von zu einem Strang zusammengefuegten senkrecht geteilten Sandblock-Giessformen
DE3011265C2 (de) * 1980-03-24 1981-12-10 Bühler, Eugen, Dipl.-Ing., 8871 Burtenbach Verfahren und Vorrichtung zum Transportieren von kastenlosen Sandgießformen
JPS5853349A (ja) * 1981-09-22 1983-03-29 Sintokogio Ltd 鋳型造型方法及びその装置
DE3201844A1 (de) * 1982-01-22 1983-08-04 BMD Badische Maschinenfabrik Durlach GmbH, 7500 Karlsruhe Giesserei-formanlage zur herstellung zweiteiliger kastenloser formen
DE3206169C1 (de) * 1982-02-20 1983-09-29 Michael 8900 Augsburg Achinger Formmaschine zur Herstellung kastenloser Formen
DE3225197A1 (de) * 1982-07-06 1984-01-12 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Verfahren und einrichtung zur herstellung von nassgut-formteilen im grossformat (formflaeche (einf. wellenlinie) 1-3m(pfeil hoch)2(pfeil hoch)) zum kastenlosen giessen
DE8307114U1 (de) * 1983-03-11 1983-09-29 Achinger, Michael, 8900 Augsburg Vorrichtung zur herstellung kastenloser formen

Also Published As

Publication number Publication date
DK299285A (da) 1985-07-01
DK299285D0 (da) 1985-07-01
DE3339620C1 (de) 1984-04-26
JPS61500258A (ja) 1986-02-20
WO1985001899A1 (fr) 1985-05-09
EP0144727A1 (fr) 1985-06-19
US4586555A (en) 1986-05-06

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