ATE81611T1 - DEVICE FOR COMPACTION OF MOLDING SAND. - Google Patents

DEVICE FOR COMPACTION OF MOLDING SAND.

Info

Publication number
ATE81611T1
ATE81611T1 AT89100554T AT89100554T ATE81611T1 AT E81611 T1 ATE81611 T1 AT E81611T1 AT 89100554 T AT89100554 T AT 89100554T AT 89100554 T AT89100554 T AT 89100554T AT E81611 T1 ATE81611 T1 AT E81611T1
Authority
AT
Austria
Prior art keywords
compaction
molding sand
sand
hydraulic
uniforimly
Prior art date
Application number
AT89100554T
Other languages
German (de)
Inventor
Herbert Dipl-Ing Grolla
Original Assignee
Wagner Heinrich Sinto Masch
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 Wagner Heinrich Sinto Masch filed Critical Wagner Heinrich Sinto Masch
Application granted granted Critical
Publication of ATE81611T1 publication Critical patent/ATE81611T1/en

Links

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)
  • Actuator (AREA)
  • Soil Working Implements (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

Moulding sand compression presses with several double-acting hydraulic press cylinders and pistons in parallel must exert equal pressures by each piston if the sand is to be compacted uniforimly. This is carried out by connecting each cylinder to a branch line of the hydraulic supply main by passages which are narrow compared with the other cross-sections of the hydraulic circuit.
AT89100554T 1988-02-06 1989-01-13 DEVICE FOR COMPACTION OF MOLDING SAND. ATE81611T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3803647A DE3803647C2 (en) 1988-02-06 1988-02-06 Device for compacting molding sand
EP89100554A EP0327826B1 (en) 1988-02-06 1989-01-13 Device for ramming moulding sand

Publications (1)

Publication Number Publication Date
ATE81611T1 true ATE81611T1 (en) 1992-11-15

Family

ID=6346817

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89100554T ATE81611T1 (en) 1988-02-06 1989-01-13 DEVICE FOR COMPACTION OF MOLDING SAND.

Country Status (3)

Country Link
EP (1) EP0327826B1 (en)
AT (1) ATE81611T1 (en)
DE (1) DE3803647C2 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220066A (en) * 1961-07-28 1965-11-30 Squeeze molding machine
DE1289953B (en) * 1967-02-10 1969-02-27 Badische Maschf Gmbh Pressing device, in particular for use in multi-punch presses for molding machines
US3586093A (en) * 1968-09-19 1971-06-22 Spo Inc Foundry squeeze mechanism
DE2134531A1 (en) * 1970-07-20 1972-01-27 SPO Inc., Cleveland, Ohio (V.St.A.) Device for making a sand mold

Also Published As

Publication number Publication date
DE3803647A1 (en) 1989-08-17
EP0327826B1 (en) 1992-10-21
DE3803647C2 (en) 1995-09-07
EP0327826A3 (en) 1990-08-29
EP0327826A2 (en) 1989-08-16

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee