EP0512201A2 - Procédé de fabrication d'un moule en sable - Google Patents

Procédé de fabrication d'un moule en sable Download PDF

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Publication number
EP0512201A2
EP0512201A2 EP92102610A EP92102610A EP0512201A2 EP 0512201 A2 EP0512201 A2 EP 0512201A2 EP 92102610 A EP92102610 A EP 92102610A EP 92102610 A EP92102610 A EP 92102610A EP 0512201 A2 EP0512201 A2 EP 0512201A2
Authority
EP
European Patent Office
Prior art keywords
air
molding
sand
molding sand
compression
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
Application number
EP92102610A
Other languages
German (de)
English (en)
Other versions
EP0512201B1 (fr
EP0512201A3 (en
Inventor
Herbert Dipl.-Ing. Grolla
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.)
Heinrich Wagner Sinto Maschinenfabrik GmbH
Original Assignee
Heinrich Wagner Sinto Maschinenfabrik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6430840&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0512201(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Heinrich Wagner Sinto Maschinenfabrik GmbH filed Critical Heinrich Wagner Sinto Maschinenfabrik GmbH
Publication of EP0512201A2 publication Critical patent/EP0512201A2/fr
Publication of EP0512201A3 publication Critical patent/EP0512201A3/de
Application granted granted Critical
Publication of EP0512201B1 publication Critical patent/EP0512201B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • 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 method for producing a sand mold in a molding machine by filling the molding sand into a molding box and compressing the molding sand with air and by the action of mechanical loading forces.
  • this object is achieved in that the molding sand is not exposed to air from the head space above the molding box until mechanical molding of the molding sand begins.
  • the method according to the invention was compared to the method according to the prior art on a molding machine from the applicant.
  • This molding machine was characterized by the following essential data:
  • FIG. 1 shows a part of the sand molding machine, specifically with the model plate 10 in which there are throughflow openings 12, the actual molding box 14 and the filling box 16 located above it.
  • FIG. 1 a is located above the arrangement of these parts, ie Above the filling box, a sand bunker 18, from which the molding box 14 and the filling box 16 are filled with molding sand. Then this bunker 18 is moved away and, via the arrangement of model plate 10, molding box 14 and filling box 16, the compression unit is driven, which consists of a multi-die press head 20 and an air supply device 22 for supplying the compressed air with which the molding sand is compressed.
  • the press rams 20 are in Fig. 1 b in their retracted position and in Fig.
  • FIG. 1 the individual parts are in the extended position in which the mold box is separated from the model. It has to be taken into account that according to FIG. 1 the state of the art is shown, in which the air compression takes place before the mechanical compression, whereas according to the invention the air compression only starts when the mechanical pressing has already started.
  • experiment A carried out measurements in connection with a method according to which compressed air was applied to the molding sand in the sense of airflow compression and then mechanical re-compression by hydraulic pressing.
  • the test series gave the following measurement results when 4 different special pressing pressures were applied to the sand by the press rams:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
EP92102610A 1991-05-02 1992-02-17 Procédé de fabrication d'un moule en sable Revoked EP0512201B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914114362 DE4114362A1 (de) 1991-05-02 1991-05-02 Verfahren zum herstellen einer sandform
DE4114362 1991-05-02

Publications (3)

Publication Number Publication Date
EP0512201A2 true EP0512201A2 (fr) 1992-11-11
EP0512201A3 EP0512201A3 (en) 1993-05-26
EP0512201B1 EP0512201B1 (fr) 1996-07-31

Family

ID=6430840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102610A Revoked EP0512201B1 (fr) 1991-05-02 1992-02-17 Procédé de fabrication d'un moule en sable

Country Status (3)

Country Link
EP (1) EP0512201B1 (fr)
DE (1) DE4114362A1 (fr)
ES (1) ES2090378T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0849017A1 (fr) * 1996-12-17 1998-06-24 Loramendi, S.A. Machines moulage à impulsion de pression d'air

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3083042B2 (ja) * 1994-05-12 2000-09-04 新東工業株式会社 鋳型造型方法
DE19540466A1 (de) * 1995-03-17 1996-09-19 Kuenkel Wagner Serv & Vertrieb Sandformqualität durch Ölstrommessung zum Preßhaupt
DE19652308B4 (de) * 1995-12-15 2007-03-01 Künkel-Wagner Prozesstechnologie GmbH Dynamische Iterative Stempel-Regelung des Preßvorganges beim Vielstempelpressen
ES2148020B1 (es) * 1996-12-17 2001-04-16 Loramendi Sa Maquina mejorada para compactacion de moldes de arena por impacto de aire u onda expansiva.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3226171A1 (de) * 1981-07-20 1983-02-10 Georg Fischer AG, 8201 Schaffhausen Verfahren zum verdichten von koernigen formstoffen, insbesondere giessereiformstoffen, und vorrichtung zur durchfuehrung des verfahrens
EP0370966A2 (fr) * 1988-11-21 1990-05-30 Stern Giesserei-Anlage Gmbh Dispositif de compactage de sable de moulage dans des châssis à l'aide d'impulsions d'air comprimé

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290667B (de) * 1960-09-07 1969-03-13 Olsson Erik Allan Stahlstranggiessverfahren
US3293703A (en) * 1962-11-13 1966-12-27 Arthur R Taccone Vacuum molding apparatus
US3381740A (en) * 1965-07-07 1968-05-07 Osborn Mfg Co Foundry molding machine
DE2554414C2 (de) * 1975-12-03 1982-07-01 Alfelder Maschinen- und Modell-Fabrik Künkel, Wagner & Co KG, 3220 Alfeld Verfahren und Vorrichtung zum Herstellen von Sandgießformen
DE2608740C2 (de) * 1976-03-03 1978-05-11 Eugen Dipl.-Ing. 8871 Burtenbach Buehler Verfahren zum Verdichten von Formsand
JPS55120450A (en) * 1979-03-08 1980-09-16 Sintokogio Ltd Mold molding apparatus
DE3634767A1 (de) * 1986-10-11 1988-04-21 Wagner Heinrich Sinto Masch Vorrichtung zur verdichtung von formsand
DE3740611C2 (de) * 1987-12-01 1998-07-23 Wagner Heinrich Sinto Masch Verfahren zum Verdichten von Formsand
DE3939001C1 (en) * 1989-11-25 1991-01-31 Georg Fischer Ag, Schaffhausen, Ch Mfr. of casting mould parts, with uniform hardness - uses machine with pattern plate, moulding frame and filling frame

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3226171A1 (de) * 1981-07-20 1983-02-10 Georg Fischer AG, 8201 Schaffhausen Verfahren zum verdichten von koernigen formstoffen, insbesondere giessereiformstoffen, und vorrichtung zur durchfuehrung des verfahrens
EP0370966A2 (fr) * 1988-11-21 1990-05-30 Stern Giesserei-Anlage Gmbh Dispositif de compactage de sable de moulage dans des châssis à l'aide d'impulsions d'air comprimé

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GIESSEREI Bd. 76, Nr. 20, 2. Oktober 1989, D SSELDORF, DE Seiten 695 - 700 , XP53266 BOESNISCH ET AL 'Ursachen und Auswirkungen derzeitiger Entwicklungen im Formmaschinenbau' * Abbildungen 10,11 * * Tabelle 1 * *
GIESSEREI Bd. 76, Nr. 20, 2. Oktober 1989, D}SSELDORF, DE Seiten 695 - 700 , XP53266 BOESNISCH ET AL 'Ursachen und Auswirkungen derzeitiger Entwicklungen im Formmaschinenbau' *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0849017A1 (fr) * 1996-12-17 1998-06-24 Loramendi, S.A. Machines moulage à impulsion de pression d'air

Also Published As

Publication number Publication date
ES2090378T3 (es) 1996-10-16
EP0512201B1 (fr) 1996-07-31
DE4114362A1 (de) 1992-11-05
DE4114362C2 (fr) 1993-04-22
EP0512201A3 (en) 1993-05-26

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