EP0319453A3 - Method for ramming moulding sand - Google Patents

Method for ramming moulding sand Download PDF

Info

Publication number
EP0319453A3
EP0319453A3 EP88710050A EP88710050A EP0319453A3 EP 0319453 A3 EP0319453 A3 EP 0319453A3 EP 88710050 A EP88710050 A EP 88710050A EP 88710050 A EP88710050 A EP 88710050A EP 0319453 A3 EP0319453 A3 EP 0319453A3
Authority
EP
European Patent Office
Prior art keywords
sand
pattern
air
foundry sand
ramming
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
EP88710050A
Other languages
German (de)
Other versions
EP0319453A2 (en
EP0319453B1 (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=6341599&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0319453(A3) "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
Priority to AT88710050T priority Critical patent/ATE70750T1/en
Publication of EP0319453A2 publication Critical patent/EP0319453A2/en
Publication of EP0319453A3 publication Critical patent/EP0319453A3/en
Application granted granted Critical
Publication of EP0319453B1 publication Critical patent/EP0319453B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22C15/02—Compacting by pressing devices only
    • B22C15/08—Compacting by pressing devices only involving pneumatic or hydraulic mechanisms

Landscapes

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

Abstract

The invention relates to a method for ramming foundry sand in a moulding box which is placed on a pattern plate provided with a pattern and holes for the passage of air. After the foundry sand has been introduced loosely into the moulding box, it is acted upon briefly by compressed air and then compressed by means of a press. In known methods, it was either impossible or possible only at great expense to compact the foundry sand sufficiently to achieve a good casting surface, particularly at critical points of the pattern to be moulded. According to the invention, air is passed through the sand during the pressing operation. A method according to the invention can be employed in the production of all types of sand moulds.
EP88710050A 1987-12-01 1988-11-30 Method for ramming moulding sand Expired - Lifetime EP0319453B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88710050T ATE70750T1 (en) 1987-12-01 1988-11-30 METHOD OF COMPACTION OF MOLDING SAND.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3740611A DE3740611C2 (en) 1987-12-01 1987-12-01 Process for compacting molding sand
DE3740611 1987-12-01

Publications (3)

Publication Number Publication Date
EP0319453A2 EP0319453A2 (en) 1989-06-07
EP0319453A3 true EP0319453A3 (en) 1990-05-16
EP0319453B1 EP0319453B1 (en) 1991-12-27

Family

ID=6341599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88710050A Expired - Lifetime EP0319453B1 (en) 1987-12-01 1988-11-30 Method for ramming moulding sand

Country Status (3)

Country Link
EP (1) EP0319453B1 (en)
AT (1) ATE70750T1 (en)
DE (1) DE3740611C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114362A1 (en) * 1991-05-02 1992-11-05 Wagner Heinrich Sinto Masch METHOD FOR PRODUCING A SAND FORM
DE4409791A1 (en) * 1994-03-22 1995-09-28 Wagner Heinrich Sinto Masch Device for the production of casting molds
DE4419300C2 (en) * 1994-06-01 1999-05-20 Kuenkel Wagner Prozesstechnolo Compression process with downward moving membrane press plate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3034653A1 (en) * 1980-09-13 1982-04-29 Buderus Ag, 6330 Wetzlar Moulding sand compaction unit - comprising independently movable rams sepd. by sand injection openings
US4620584A (en) * 1985-05-24 1986-11-04 Witt Raymond H Green sand mold filling system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2608740C2 (en) * 1976-03-03 1978-05-11 Eugen Dipl.-Ing. 8871 Burtenbach Buehler Process for compacting molding sand
DE2844464C2 (en) * 1978-10-12 1983-03-24 Bühler, Eugen, Dipl.-Ing., 8871 Burtenbach Method and device for compacting casting molds

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3034653A1 (en) * 1980-09-13 1982-04-29 Buderus Ag, 6330 Wetzlar Moulding sand compaction unit - comprising independently movable rams sepd. by sand injection openings
US4620584A (en) * 1985-05-24 1986-11-04 Witt Raymond H Green sand mold filling system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GIESSEREI *

Also Published As

Publication number Publication date
DE3740611C2 (en) 1998-07-23
EP0319453A2 (en) 1989-06-07
EP0319453B1 (en) 1991-12-27
ATE70750T1 (en) 1992-01-15
DE3740611A1 (en) 1989-06-15

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