EP0083713A2 - Procédé pour la fabrication d'un noyau de fonderie - Google Patents

Procédé pour la fabrication d'un noyau de fonderie Download PDF

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Publication number
EP0083713A2
EP0083713A2 EP82110751A EP82110751A EP0083713A2 EP 0083713 A2 EP0083713 A2 EP 0083713A2 EP 82110751 A EP82110751 A EP 82110751A EP 82110751 A EP82110751 A EP 82110751A EP 0083713 A2 EP0083713 A2 EP 0083713A2
Authority
EP
European Patent Office
Prior art keywords
core
halves
core box
hollow
central 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.)
Granted
Application number
EP82110751A
Other languages
German (de)
English (en)
Other versions
EP0083713A3 (en
EP0083713B1 (fr
Inventor
Klaus Haiduk
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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
Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0083713A2 publication Critical patent/EP0083713A2/fr
Publication of EP0083713A3 publication Critical patent/EP0083713A3/de
Application granted granted Critical
Publication of EP0083713B1 publication Critical patent/EP0083713B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/103—Multipart cores

Definitions

  • the invention relates to a method for producing a hollow foundry core from two core halves, each core half being formed on an inner hollow molded part and an outer core box half and then the core halves being joined together.
  • foundry cores In the production of castings, it is mostly necessary to create recesses or cavities by arranging foundry cores in the foundry mold. These foundry cores should largely disintegrate after casting in order to avoid coring work and not to obstruct the casting shrinkage. In order to achieve this, but also to save on expensive core sand material, foundry cores are recessed on the inside, insofar as their geometric shape and the manufacturing process used permit. For example, it is possible to produce a one-piece foundry core that is hollowed out on the inside by immersing a fixed or movable mandrel in the molding sand during the molding process, which is pulled out of the foundry core after the molding sand has hardened.
  • the disadvantage here is that no foundry core with a uniform wall thickness can be produced in this way and consequently a uniform hardening of the shaped foundry core is not possible.
  • the finished foundry core has an opening that is used during the later casting process must be closed by other molded parts, otherwise cast iron melt would penetrate into the interior of the core.
  • a molding of two core halves is provided on two corresponding molding machines, each molding machine being assigned a core box half and a hollow molding part attached to lifting cylinders.
  • the two core halves are produced on the molding machine, then the two core box halves are transported to an assembly station together with the core halves remaining in them.
  • the core box halves are stacked one above the other and pressed together using a pressing tool, so that the respective core halves connect to one another. This process is very complex due to its different operations.
  • an apparatus for performing the described method is proposed. Afterwards it is recommended to fix the mold box halves in alignment in a horizontal or vertical plane on hydraulic cylinders. These hydraulic cylinders drive the core box halves on both sides before the core sand is poured in against the center plate, which is pivoted or retracted into alignment via a tool carrier.
  • clamp connections are proposed for the arrangement in bores on both end faces of the middle plate. It is advantageous if these clamp connections on the principle of D jerk snap fastener are formed, that is, the one element having a projecting part which engages in the moving together of the mold halves in a correspondingly shaped elastic recess.
  • the element anchored in one core half with an outer cone snaps into the element anchored in the other core half with an inner cone. In this way, the position of the two core halves relative to one another can be precisely fixed.
  • 1 and 2 denote two core box halves which together serve to form the outer contour of the foundry core to be produced. These two core box halves 1 and 2 are each attached to the ends of piston rods 3 and 4 hydraulic cylinders, not shown.
  • 5 denotes a central plate, which is fastened to a tool carrier, also not shown, and on the end faces of which a hollow molding part 6 or 7 is arranged.
  • the center plate 5 has on its one end face a plurality of projections 8 which are arranged around the hollow shaping part 6 and which serve to receive elements 9 of a clamp connection 10. Recesses 8 are provided opposite the projection 8 on the other end face of the middle plate 10 for receiving elements 11 of the clamp connection.
  • Fig. 1 the arrangement is shown in its basic position, i. H. the two core box halves 1 and 2 are moved apart via the piston rods 3 and 4 and the middle plate 5, which is already equipped with the elements 9 and 11 of the clamp connection, has not yet been pivoted between the two core box halves 1 and 2.
  • the tool holder has already pivoted the middle plate 5 between the two core box halves 1 and 2, the core box halves 1 and 2 have been moved together via the piston rods 3 and 4, so that they enclose the hollow forming parts 6 and 7 and their ends on Middle part 5.
  • the molding sand in.den space between core box half, H ohlformungsteil 6 and middle part of FIG. 2 is already 5 on the one hand and the core box half 2, hollow shaping part 7 and the middle part 5 on the other hand introduced.
  • Fig. 3 shows the arrangement in a state of the method, in which after the moving apart of the core box halves together with hardened core halves, the middle plate 5 between the core box halves 1 and 2 was pivoted out, the core halves 13 and 14 on the elements 9 and 11 of the Clamping connection 10 have been put together by moving the core box halves 1 and 2 together and has lifted a core box half 1 from the finished foundry core.
  • the core box half 2 holds the finished foundry core produced from the core halves 13 and 14 and pivots it, as can be seen in FIG. 4, in order to release it after being placed on a shelf 15 or a conveyor belt.
  • the finished foundry core is thus available for use in a casting mold.
  • the method can be used in all known, mechanical, cold and hot core manufacturing processes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Devices For Molds (AREA)
EP82110751A 1982-01-07 1982-11-20 Procédé pour la fabrication d'un noyau de fonderie Expired EP0083713B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823200193 DE3200193A1 (de) 1982-01-07 1982-01-07 Verfahren zur herstellung eines hohlen giessereikerns
DE3200193 1982-01-07

Publications (3)

Publication Number Publication Date
EP0083713A2 true EP0083713A2 (fr) 1983-07-20
EP0083713A3 EP0083713A3 (en) 1983-10-05
EP0083713B1 EP0083713B1 (fr) 1985-02-20

Family

ID=6152666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110751A Expired EP0083713B1 (fr) 1982-01-07 1982-11-20 Procédé pour la fabrication d'un noyau de fonderie

Country Status (4)

Country Link
US (1) US4694883A (fr)
EP (1) EP0083713B1 (fr)
JP (1) JPS58119435A (fr)
DE (2) DE3200193A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007543A1 (fr) * 1986-06-04 1987-12-17 Eisenwerk Brühl GmbH Procede pour fabriquer des moules et des parties de moules a des fins de fonderie, notamment pour fabriquer des noyaux, et installation permettant la mise en oeuvre du procede
EP0209809A3 (en) * 1985-07-23 1988-11-23 Adolf Hottinger Maschinenbau Gmbh Machine for assembling foundry cores or mould shells
EP0280675A3 (en) * 1987-02-25 1989-02-22 Avl Gesellschaft Fur Verbrennungskraftmaschinen Und Messtechnik Mbh.Prof.Dr.Dr.H.C. Hans List Mould for a crankcase
EP0904872A1 (fr) * 1997-09-25 1999-03-31 Hottinger Maschinenbau GmbH Connexion des noyaux
WO2000023214A1 (fr) * 1998-10-21 2000-04-27 Hottinger Maschinenbau Gmbh Assemblage de noyaux
WO2000071282A1 (fr) * 1999-05-25 2000-11-30 Hottinger Maschinenbau Gmbh Dispositif pour l'assemblage de pieces de tout type
WO2001024957A1 (fr) * 1999-10-04 2001-04-12 Pcc Structurals, Inc. Procede et dispositif d'assemblage de composants de modeles de moulage a la cire perdue
EP1134048A1 (fr) * 2000-03-17 2001-09-19 Olsberg Hermann Everken GmbH Procédé pour la fabrication de pièces coulées creuses et boíte à noyaux
RU2174890C1 (ru) * 2000-06-13 2001-10-20 Открытое акционерное общество "Нижнетагильский котельно-радиаторный завод" Способ изготовления литейных стержней
EP2022579A1 (fr) * 2007-08-03 2009-02-11 Euromac Technologie Impianti e Macchine S.R.L. Procédé et machine pour la fabrication de noyaux creux

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6163337A (ja) * 1984-09-06 1986-04-01 Naniwa Seisakusho:Kk 空隙部を有する鋳型の垂直割造型・接着機
JPS6163336A (ja) * 1984-09-06 1986-04-01 Naniwa Seisakusho:Kk 一体接合鋳型の造型法
US6315295B1 (en) * 1997-03-04 2001-11-13 Magna International Investments (Barbados) Inc. Inflatable seals
EP1230048A1 (fr) * 1999-11-18 2002-08-14 Adolf Hottinger Maschinenbau GmbH Procede de fabrication de moules
US20040083609A1 (en) * 2002-11-04 2004-05-06 Malott Theodore A. Two-piece molded fan
CA2543327A1 (fr) 2003-10-28 2005-05-19 Hos Hottinger Systems Gbr Procede de coulee de pieces moulees
DE102004013973B4 (de) * 2004-03-19 2015-02-26 Gelson Montero Verfahren zum Gießen von Formteilen
US8091608B2 (en) * 2009-05-15 2012-01-10 GM Global Technology Operations LLC Method of forming a hollow sand core

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD34605A (fr) *
GB643778A (en) * 1948-06-01 1950-09-27 Foundry Services Ltd Improvements in or relating to the joining of sand cores
GB718684A (en) * 1951-12-26 1954-11-17 Gen Motors Corp Method and apparatus for forming hollow cores for casting metals
DE962828C (de) * 1952-10-30 1957-04-25 Croning & Co Giessform fuer Eisen- und Metallguss mit mindestens zwei Wirkflaechen, sowie Verfahren zur Herstellung derselben
DE1173618B (de) * 1962-12-03 1964-07-09 Rheinische Maschinenfabrik Verfahren zur Herstellung von Giesserei-Hohlkernen aus schnell haertenden Sanden sowie Kernformeinrichtung zur Durchfuehrung des Verfahrens
CH416951A (de) * 1964-02-29 1966-07-15 Buderus Eisenwerk Verfahren und Einrichtung zur Herstellung von Giesserei-Hohlkernen und -Hohlformen
DE1253415B (de) * 1965-08-04 1967-11-02 Rheinstahl Eisenwerk Hilden Ag Verfahren zum Herstellen zweiteiliger Hohlkerne nach dem Schiessverfahren mit Heisskernkaesten
US3633651A (en) * 1970-03-19 1972-01-11 Gen Motors Corp Automatic mechanical die spray apparatus
DE2237915B2 (de) * 1972-08-02 1975-07-03 Teves-Thompson Gmbh, 3013 Barsinghausen Stapelgießform
IT1010492B (it) * 1974-05-08 1977-01-10 Fomes Sa Procedimento per lo stampaggio e la estrazione di anime alleggeri te da fonderia e dispositivo per la esecuzione di detto procedimen to
DE2437997A1 (de) * 1974-08-07 1976-02-26 Vogel & Schemmann Masch Kernschiessmaschine zur herstellung von hohlkernen
DE2557193C2 (de) * 1975-12-18 1983-01-13 Fomes S.A. Foundry and Metallurgical Supplies Corp., Chiasso Vorrichtung zur Herstellung von hohlen Gießkernen
US4278123A (en) * 1979-03-12 1981-07-14 Acme-Cleveland Corporation Simplified foundry core making machine and method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0209809A3 (en) * 1985-07-23 1988-11-23 Adolf Hottinger Maschinenbau Gmbh Machine for assembling foundry cores or mould shells
WO1987007543A1 (fr) * 1986-06-04 1987-12-17 Eisenwerk Brühl GmbH Procede pour fabriquer des moules et des parties de moules a des fins de fonderie, notamment pour fabriquer des noyaux, et installation permettant la mise en oeuvre du procede
EP0280675A3 (en) * 1987-02-25 1989-02-22 Avl Gesellschaft Fur Verbrennungskraftmaschinen Und Messtechnik Mbh.Prof.Dr.Dr.H.C. Hans List Mould for a crankcase
EP0904872A1 (fr) * 1997-09-25 1999-03-31 Hottinger Maschinenbau GmbH Connexion des noyaux
WO2000023214A1 (fr) * 1998-10-21 2000-04-27 Hottinger Maschinenbau Gmbh Assemblage de noyaux
WO2000071282A1 (fr) * 1999-05-25 2000-11-30 Hottinger Maschinenbau Gmbh Dispositif pour l'assemblage de pieces de tout type
US6588490B2 (en) 1999-05-25 2003-07-08 Reiner Rommel Foundry core assembly of interconnected cores
WO2001024957A1 (fr) * 1999-10-04 2001-04-12 Pcc Structurals, Inc. Procede et dispositif d'assemblage de composants de modeles de moulage a la cire perdue
EP1134048A1 (fr) * 2000-03-17 2001-09-19 Olsberg Hermann Everken GmbH Procédé pour la fabrication de pièces coulées creuses et boíte à noyaux
RU2174890C1 (ru) * 2000-06-13 2001-10-20 Открытое акционерное общество "Нижнетагильский котельно-радиаторный завод" Способ изготовления литейных стержней
EP2022579A1 (fr) * 2007-08-03 2009-02-11 Euromac Technologie Impianti e Macchine S.R.L. Procédé et machine pour la fabrication de noyaux creux

Also Published As

Publication number Publication date
US4694883A (en) 1987-09-22
DE3200193A1 (de) 1983-07-14
DE3262453D1 (en) 1985-03-28
EP0083713A3 (en) 1983-10-05
EP0083713B1 (fr) 1985-02-20
JPS58119435A (ja) 1983-07-15

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