EP 0131723 B1 19870812 - DEVICE FOR COMPACTING FOUNDRY MOULD MATERIAL BY MEANS OF PRESSURIZED GAS
Title (en)
DEVICE FOR COMPACTING FOUNDRY MOULD MATERIAL BY MEANS OF PRESSURIZED GAS
Publication
Application
Priority
DE 3321955 A 19830618
Abstract (en)
[origin: EP0131723A1] 1. Device for compacting foundry mould material by means of pressurized gas, comprising a pressure tank (5) for the pressurized gas constituting an admission pressure chamber, a moulding zone positioned below it formed by moulding box (3), sand frame (4) and a pattern plate (1) with pattern (2) terminating the moulding box (3) at the bottom and onto which is loosely poured the moulding material prior to compacting and a valve with a large opening cross-section arranged between the admission pressure chamber and the moulding zone and whose closing member opens in the millisecond range and with which is associated a control valve (25, 26, 27), whose free opening cross-section is larger than the free cross-section of valve opening (8) and which can be adjusted to a given control cross-section by means of a control member (26) prior to the start of the opening movement of closing member (11).
IPC 1-7
IPC 8 full level
B22C 15/24 (2006.01); B22C 15/00 (2006.01)
CPC (source: EP)
B22C 15/00 (2013.01)
Citation (examination)
EP 0129210 A2 19841227 - BADISCHE MASCHF GMBH [DE]
Designated contracting state (EPC)
CH FR GB IT LI SE
DOCDB simple family (publication)
EP 0131723 A1 19850123; EP 0131723 B1 19870812; DD 218847 A5 19850220; DE 3321955 A1 19841220; DE 3321955 C2 19890629; JP S6012254 A 19850122; YU 105484 A 19871231
DOCDB simple family (application)
EP 84106120 A 19840529; DD 26419384 A 19840615; DE 3321955 A 19830618; JP 12390784 A 19840618; YU 105484 A 19840615