EP2301692B1 - Dispositif et procédé de déballage et de dessablage de pièces de formage coulées - Google Patents

Dispositif et procédé de déballage et de dessablage de pièces de formage coulées Download PDF

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Publication number
EP2301692B1
EP2301692B1 EP09170147.4A EP09170147A EP2301692B1 EP 2301692 B1 EP2301692 B1 EP 2301692B1 EP 09170147 A EP09170147 A EP 09170147A EP 2301692 B1 EP2301692 B1 EP 2301692B1
Authority
EP
European Patent Office
Prior art keywords
sand
moulding
permeable
box
castings
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.)
Not-in-force
Application number
EP09170147.4A
Other languages
German (de)
English (en)
Other versions
EP2301692A1 (fr
Inventor
Artur Bissert
Markus Henkel
Urs Gerber
Bernhard Schädle
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.)
Georg Fischer Automobilguss GmbH Germany
Original Assignee
Georg Fischer Automobilguss GmbH Germany
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 Georg Fischer Automobilguss GmbH Germany filed Critical Georg Fischer Automobilguss GmbH Germany
Priority to SI200931402A priority Critical patent/SI2301692T1/sl
Priority to PL09170147T priority patent/PL2301692T3/pl
Priority to EP09170147.4A priority patent/EP2301692B1/fr
Priority to PT91701474T priority patent/PT2301692E/pt
Priority to ES09170147.4T priority patent/ES2560777T3/es
Priority to DK09170147.4T priority patent/DK2301692T3/en
Publication of EP2301692A1 publication Critical patent/EP2301692A1/fr
Application granted granted Critical
Publication of EP2301692B1 publication Critical patent/EP2301692B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/001—Removing cores
    • B22D29/006—Removing cores by abrasive, water or air blasting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots

Definitions

  • the invention relates to a device for unpacking and sanding casting mold parts cast in molding sand and in molding boxes, comprising a compressed air tank, an air- and sand-permeable surface and a collecting container,
  • castings made of cast iron are poured into sand molds.
  • a molding box composed of upper and lower box halves a hollow shape is formed in the sand, in which the liquid metal is poured.
  • cores are inserted into the hollow mold before the casting process.
  • the casting or castings must be freed from the foundry sand and the cores.
  • shaking or shaking devices, and / or devices that flush the sand away with water jets are used. Subsequently, the casting must be freed from the molding sand.
  • From the CH 640 159 A5 is a method and a plant for wet-sands known.
  • the bale is placed on a rotatable grate and irradiated by water jet nozzles with a pressure of up to 800 bar.
  • the water jet can cause cracking in the mold parts. Wet sanding is only economically viable if the water and sand can be recycled economically.
  • a device for unpacking and Entsanden of poured into molding sand and molding boxes moldings comprising a compressed air tank, an air- and sand-permeable pad and a collecting container, wherein the compressed air tank has an opening corresponding to the cross-sectional area of the molding box and by means of a sealant directly over the sand surface is arranged.
  • the compressed air pulse can act as well as possible on the molding sand surface. This is achieved by not opening the molding box and by not removing the upper half of the molding box. The molding box is stored on the upper edge of the collection container.
  • FIG. 1 is a schematic and cut a device 1 for unpacking and desanding cast in molding sand 8 and mold box 6 mold parts 7 shown.
  • the molding box 6 consists of two horizontally superimposed mold box halves, a top box 10 and a bottom box 11. In the molding sand 8, a molded part 7 is shown schematically.
  • the molding box 6 is airtight on the top and bottom by means of sealing means 12, 13 connected to the device 1 for unpacking and Entsanden.
  • the device 1 comprises in addition to the sealing means 12, 13 substantially a compressed air tank 2 for acting on the sand surface of the upper box 10 with compressed air, an air- and sand-permeable surface 3 and a collecting container 4 for collecting the molding sand. 8
  • the top box 10 is not removed when unpacking.
  • the compressed air tank 2 has an opening which is substantially the same size as the surface of the molding sand 8 in the molding box 6.
  • the air pressure is increased. With a sufficiently high pressure of the Molding sand 8 pressed together with the mold part 7 from the molding box 6.
  • the compressed air tank 2 is formed as a bell with a relatively small height. The compressed air acts uniformly on the entire surface of the molding box 6, which is indicated by the arrows in FIG FIG. 1 is hinted at.
  • the air- and sand-permeable pad 3 is disposed within the collecting container 4.
  • the pad 3 may be formed, for example, as a grate, a pallet, a conveyor belt or other air and sand permeable means of transport.
  • the air- and sand-permeable pad 3 is arranged at a distance to the lower edge of the mold box 6.
  • the distance between the sand surface of the lower box 11 and the pad 3 is less than half the height of the lower box 11. This ensures that the molding sand 8 can be solved on unpacking on all sides of the mold part 7.
  • the distance between the mold box 6 and pad 3 should be kept as small as possible in order to prevent damage to the sanded cast molding 7 when falling on the pad 3.
  • FIG. 2 the situation is shown after unpacking and desanding.
  • the molding sand 8 is in the collecting container 4 and the mold part 7 lies on the base 3.
  • the device 1 is still closed but is in the unpressurized state. In this state, the compressed air tank 2 and the collecting container 4 can be removed. If the casting 7 lies on a conveyor belt, the casting 7 with the now empty molding box 6 can be removed from the device 1 for unpacking and desanding.
  • FIG. 3 is a next situation during unpacking and Entsanden shown schematically.
  • the mold box 6 is overall, ie without upper box 10 and lower box 11 to separate, transported away to the molding plant.
  • the mold halves are separated, filled with molding sand 8 and pressed by a model in the correct form, possibly equipped with core material and then led to the casting station.
  • FIG. 4 is lying on the air and sand permeable pad 3 lying mold part 7 after unpacking and desanding.
  • the casting 7 can be moved on the grate 3 to the next processing station, such as a Gussputzvorraum.
  • the mold parts 7 are unpacked and dispatched in a single location. A transport to another part of the system is not necessary. A prior separation of the mold box halves 10, 11 is not desirable because the pressure build-up in the compressed air tank 2 only works well when the compressed air tank 2 is placed directly on the molding box 6. The unpacking and sanding with compressed air requires no water and no time-consuming regeneration or drying.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)

Claims (5)

  1. Dispositif (1) de déballage et de dessablage de parties de moule coulées (7) coulées dans du sable de moulage (8) et dans des châssis de moule (6), comprenant un récipient d'air sous pression (2), un support inférieur (3) perméable à l'air et au sable et un récipient de collecte (4), caractérisé en ce que le récipient d'air sous pression (2) présente une ouverture correspondant à la surface en section transversale du châssis de moule (6) et est disposé directement au-dessus de la surface du sable au moyen d'un moyen d'étanchéité (12).
  2. Dispositif (1) de déballage et de dessablage de parties de moule coulées (7) coulées dans du sable de moulage (8) et dans des châssis de moule (6) selon la revendication 1, caractérisé en ce que le support inférieur (3) perméable à l'air et au sable est disposé à une certaine distance en-dessous du châssis de moule (6) dans le récipient de collecte (4).
  3. Dispositif (1) de déballage et de dessablage de parties de moule coulées (7) coulées dans du sable de moulage (8) et dans des châssis de moule (6) selon la revendication 1 ou 2, caractérisé en ce que la distance entre le bord supérieur du récipient de collecte (4) et le bord supérieur du support inférieur (3) perméable à l'air et au sable est inférieure à la moitié de la hauteur d'une moitié du châssis de moule (6).
  4. Dispositif (1) de déballage et de dessablage de parties de moule coulées (7) coulées dans du sable de moulage (8) et dans des châssis de moule (6) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le support inférieur (3) perméable à l'air et au sable est réalisé sous forme de moyen de transport, par exemple sous forme de grille ou de palette pour les parties de moule coulées (7).
  5. Dispositif (1) de déballage et de dessablage de parties de moule coulées (7) coulées dans du sable de moulage (8) et dans des châssis de moule (6) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le support inférieur (3) perméable à l'air et au sable est réalisé sous forme de moyen de transport, par exemple sous forme de bande transporteuse pour les parties de moule coulées (7).
EP09170147.4A 2009-09-14 2009-09-14 Dispositif et procédé de déballage et de dessablage de pièces de formage coulées Not-in-force EP2301692B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SI200931402A SI2301692T1 (sl) 2009-09-14 2009-09-14 Naprava in postopek za ločevanje in čiščenje ulitih delov
PL09170147T PL2301692T3 (pl) 2009-09-14 2009-09-14 Urządzenie i sposób wybijania i odpiaszczania części form odlewanych
EP09170147.4A EP2301692B1 (fr) 2009-09-14 2009-09-14 Dispositif et procédé de déballage et de dessablage de pièces de formage coulées
PT91701474T PT2301692E (pt) 2009-09-14 2009-09-14 Dispositivo e processo para desembalar e remover a areia de partes de molde
ES09170147.4T ES2560777T3 (es) 2009-09-14 2009-09-14 Dispositivo y procedimiento para desmoldear y desarenar piezas de fundición en molde
DK09170147.4T DK2301692T3 (en) 2009-09-14 2009-09-14 METHOD AND DEVICE FOR Unpacking and sand broadcast mold pieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09170147.4A EP2301692B1 (fr) 2009-09-14 2009-09-14 Dispositif et procédé de déballage et de dessablage de pièces de formage coulées

Publications (2)

Publication Number Publication Date
EP2301692A1 EP2301692A1 (fr) 2011-03-30
EP2301692B1 true EP2301692B1 (fr) 2016-01-06

Family

ID=41130273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09170147.4A Not-in-force EP2301692B1 (fr) 2009-09-14 2009-09-14 Dispositif et procédé de déballage et de dessablage de pièces de formage coulées

Country Status (6)

Country Link
EP (1) EP2301692B1 (fr)
DK (1) DK2301692T3 (fr)
ES (1) ES2560777T3 (fr)
PL (1) PL2301692T3 (fr)
PT (1) PT2301692E (fr)
SI (1) SI2301692T1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013224976B4 (de) * 2013-12-05 2019-07-11 Wobben Properties Gmbh Verfahren zum Aufbereiten von Formsand, sowie Gießsystem
DE102016201824A1 (de) 2016-02-08 2017-08-10 Volkswagen Aktiengesellschaft Formenstrang-Gießanlage mit 3D-Drucker und Verfahren zur Serienfertigung von Gussteilen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738415A (en) * 1971-12-23 1973-06-12 J Planten Method of molding articles and reclaiming the foundry sand used
CH640159A5 (de) 1979-06-06 1983-12-30 Foundry Design Corp Europ Verfahren und anlage zum formen, nassentsanden und reinigen von gussstuecken.
DD202114A5 (de) * 1981-04-18 1983-08-31 Badische Maschf Gmbh Verfahren und vorrichtung zum pneumatischen verdichten von formsand
DD234810A1 (de) * 1985-03-01 1986-04-16 Schwermasch Liebknecht Veb K Einrichtung zur reinigung von gussstuecken
DE19845899A1 (de) 1998-10-06 2000-04-13 Georg Fischer Disa Ag Verfahren zum Entsanden von Gußstücken
CN1325207C (zh) * 2000-07-27 2007-07-11 联合工程公司 帮助从铸件上除去砂型的方法
JP2005532911A (ja) * 2002-07-11 2005-11-04 コンソリデイテッド エンジニアリング カンパニー， インコーポレイテッド 鋳造物からの砂鋳型の除去を補助するための方法および装置

Also Published As

Publication number Publication date
PL2301692T3 (pl) 2016-06-30
EP2301692A1 (fr) 2011-03-30
PT2301692E (pt) 2016-03-09
ES2560777T3 (es) 2016-02-22
SI2301692T1 (sl) 2016-05-31
DK2301692T3 (en) 2016-04-11

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