EP0077511A1 - Procédé et dispositif pour séparer des pièces coulées et sable de moulage - Google Patents

Procédé et dispositif pour séparer des pièces coulées et sable de moulage Download PDF

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Publication number
EP0077511A1
EP0077511A1 EP82109365A EP82109365A EP0077511A1 EP 0077511 A1 EP0077511 A1 EP 0077511A1 EP 82109365 A EP82109365 A EP 82109365A EP 82109365 A EP82109365 A EP 82109365A EP 0077511 A1 EP0077511 A1 EP 0077511A1
Authority
EP
European Patent Office
Prior art keywords
sand
lance
casting
fluid
medium
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.)
Ceased
Application number
EP82109365A
Other languages
German (de)
English (en)
Inventor
Horst Dr. Kreikenbaum
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 AG
Original Assignee
Georg Fischer 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 Georg Fischer AG filed Critical Georg Fischer AG
Publication of EP0077511A1 publication Critical patent/EP0077511A1/fr
Ceased legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • B22D31/002—Cleaning, working on castings

Definitions

  • the present invention relates to a method for unpacking sand castings which are moved in a geometrically defined manner, and to an apparatus for carrying out the method.
  • bales of sand come out of the molding box onto a vibrating grate, the unpacking grate on which the sand is separated from the castings.
  • a system-related property of known systems is the conversion of an ordered system specified by the casting process into an unordered system, in which the castings are statistically oriented and distributed, and after the blasting process has been carried out, they have to be ordered manually in order to be able to be fed to further machining operations.
  • the object of the present invention is to propose a method and an apparatus for carrying out the method, by means of which the disadvantages of the vibrating grate are avoided. At the same time, it is also possible to unpack thin-walled castings without the risk of breakage and to transport them to other cleaning stations in a defined manner.
  • the method and the device according to the invention is applicable to sand casting which is produced by molding with and without a box.
  • sand bale 1 which is pressed out of a molding box and which surrounds a casting 2.
  • Lance tubes 4 are inserted into the sand bale at the level of the dividing level 3.
  • the lance tubes are hollow on the inside and have openings 5 in their outer surface at the tip.
  • the lance tubes are inserted into the sand bales up to the vicinity of the casting.
  • a fluid medium is introduced under pressure into the lance tubes.
  • the medium escapes through the openings 5 into the sand mass and detaches it from the casting.
  • the separation of the sand mass from the casting is made easier by the burnt-out layer. This layer immediately surrounds the casting and is crumbly.
  • a gaseous medium such as e.g. Air used. However, an air-steam mixture can also be used, and deflagrating gases or pressurized water can be used.
  • the geometry of the lance tube can be any.
  • the openings 5 can be arranged distributed along the lateral surface of the lance or can only be provided in the tip of the lance.
  • FIG. 2 shows, for example, a defined translatory movement of the cast sand bales 1, which are fed to the device serving the purpose of the method.
  • the arrows indicate the lance tubes as they engage in the sand bale or are pushed in as far as the casting.
  • another feed movement is also conceivable, e.g. a rotary.
  • the sprue 6 is freed of sand in the manner described using the lance tubes, so that the casting can be gripped at the sprue and transported to the cooling station. Then there is a slow cooling in the sand. The remaining bale around the casting is then removed with the help of further lance tubes when the casting reaches a temperature below the critical cooling temperature.
  • the lances penetrating the sand bales have an aligning effect with respect to the casting, so that castings that have changed their position in the cooling station due to the crumbling sand in height and lateral position can still be gripped.
  • the alignment effect is that the lance tubes penetrating the sand bale hold the castings in a certain position and move them in a translatory or rotary manner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
EP82109365A 1981-10-16 1982-10-09 Procédé et dispositif pour séparer des pièces coulées et sable de moulage Ceased EP0077511A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6615/81 1981-10-16
CH661581 1981-10-16

Publications (1)

Publication Number Publication Date
EP0077511A1 true EP0077511A1 (fr) 1983-04-27

Family

ID=4312351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109365A Ceased EP0077511A1 (fr) 1981-10-16 1982-10-09 Procédé et dispositif pour séparer des pièces coulées et sable de moulage

Country Status (1)

Country Link
EP (1) EP0077511A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4827583A (en) * 1984-10-27 1989-05-09 Korber Ag Apparatus for breaking up cast fixtures
GB2230720A (en) * 1989-04-29 1990-10-31 Maverex International Limited Removing moulding material particles from a casting
EP0753365A1 (fr) * 1995-06-30 1997-01-15 Sintokogio Ltd. Dispositif d'ébavurage du sable des pièces coulées
US6622775B2 (en) 2000-05-10 2003-09-23 Consolidated Engineering Company, Inc. Method and apparatus for assisting removal of sand moldings from castings
WO2004007121A1 (fr) * 2002-07-11 2004-01-22 Consolidated Engineering Company, Inc. Procede et appareil facilitant le demoulage des objets moules de leurs moules en sable
WO2004007120A1 (fr) * 2002-07-11 2004-01-22 Consolidated Engineering Company, Inc. Procede et appareil permettant d'aider a retirer des moulages au sable de coulees
US7044974B2 (en) 2003-08-27 2006-05-16 Zimmer Technology, Inc. Hip prosthesis with a modular acetabular cup assembly
US8663547B2 (en) 2004-10-29 2014-03-04 Consolidated Engineering Company, Inc. High pressure heat treatment system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1557131A (en) * 1919-12-13 1925-10-13 Ludlum Steel Company Apparatus for removing sand cores from hollow drill rod by sand blast
US1804978A (en) * 1926-03-01 1931-05-12 Genoese John Safety paper
US2597896A (en) * 1949-03-17 1952-05-27 Ford Motor Co Casting core removal
US3627020A (en) * 1970-09-08 1971-12-14 Bangor Punta Operations Inc Mold-breaking device
US3749151A (en) * 1972-04-26 1973-07-31 Gen Motors Corp Vibratory shakeout apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1557131A (en) * 1919-12-13 1925-10-13 Ludlum Steel Company Apparatus for removing sand cores from hollow drill rod by sand blast
US1804978A (en) * 1926-03-01 1931-05-12 Genoese John Safety paper
US2597896A (en) * 1949-03-17 1952-05-27 Ford Motor Co Casting core removal
US3627020A (en) * 1970-09-08 1971-12-14 Bangor Punta Operations Inc Mold-breaking device
US3749151A (en) * 1972-04-26 1973-07-31 Gen Motors Corp Vibratory shakeout apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4827583A (en) * 1984-10-27 1989-05-09 Korber Ag Apparatus for breaking up cast fixtures
GB2230720A (en) * 1989-04-29 1990-10-31 Maverex International Limited Removing moulding material particles from a casting
EP0753365A1 (fr) * 1995-06-30 1997-01-15 Sintokogio Ltd. Dispositif d'ébavurage du sable des pièces coulées
US6622775B2 (en) 2000-05-10 2003-09-23 Consolidated Engineering Company, Inc. Method and apparatus for assisting removal of sand moldings from castings
WO2004007121A1 (fr) * 2002-07-11 2004-01-22 Consolidated Engineering Company, Inc. Procede et appareil facilitant le demoulage des objets moules de leurs moules en sable
WO2004007120A1 (fr) * 2002-07-11 2004-01-22 Consolidated Engineering Company, Inc. Procede et appareil permettant d'aider a retirer des moulages au sable de coulees
CN1319683C (zh) * 2002-07-11 2007-06-06 联合工程公司 用于有助于从铸件上除去砂模的方法和装置
KR100828888B1 (ko) * 2002-07-11 2008-05-09 콘솔리데이티드 엔지니어링 캄파니, 인크. 주조품으로부터 샌드 주형의 제거를 보조하기 위한 방법
US7044974B2 (en) 2003-08-27 2006-05-16 Zimmer Technology, Inc. Hip prosthesis with a modular acetabular cup assembly
US8663547B2 (en) 2004-10-29 2014-03-04 Consolidated Engineering Company, Inc. High pressure heat treatment system

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19821009

AK Designated contracting states

Designated state(s): DE FR GB IT NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19850201

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KREIKENBAUM, HORST, DR.