EP 1857201 B1 20171129 - Sand-introducing-type sand molding machine
Title (en)
Sand-introducing-type sand molding machine
Title (de)
Sandzufuhr- und Sandformmaschine
Title (fr)
Machine de moulage à introduction de sable
Publication
Application
Priority
- JP 2007006482 A 20070116
- JP 2007132487 A 20070518
Abstract (en)
[origin: EP1857201A1] A sand introducing type sand molding machine is provided, wherein the apparatus produces a sand mold by leading molding sand into a molding flask or a molding space and filling the space with it by using compressed air, and controlling the pressure-variation inside the sand tank to cause it to correspond to the pattern shape by supplying the compressed air. The apparatus comprises a sand tank 1 for pressing the molding sand by the compressed air that is equipped with compressed air supplying devices to fluidize the molding sand, a communicating tube 2 that communicates with the sand tank 1, a plurality of adjusting means 5 for adjusting the pressure and flow of the compressed air that are installed in parallel, and each outlet of which is connected to the communicating tube 2, and each inlet of which is connected to the source of the compressed air 4a, an electro-pneumatic proportional valve 6, of which the supply and discharge ports are respectively connected to the source of the compressed air 4b and to the communicating tube 2, a pressure-detecting means 7 that is provided on the sand tank 1 for detecting the pressure inside it, and a controller 8 that controls the operations of the plurality of the adjusting means 5 and the electro-pneumatic proportional valve 6 that is electrically connected to the plurality of the adjusting means 5 and the pressure-detecting means 7 and the electro-pneumatic proportional valve 6.
IPC 8 full level
B22C 15/24 (2006.01)
CPC (source: EP KR US)
B22C 9/02 (2013.01 - KR); B22C 15/24 (2013.01 - EP KR US); B22C 19/04 (2013.01 - KR)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1857201 A1 20071121; EP 1857201 B1 20171129; BR PI0720949 A2 20140318; BR PI0720949 B1 20160329; BR PI0720949 B8 20161011; JP 2009000690 A 20090108; JP 4697609 B2 20110608; KR 101106868 B1 20120119; KR 20090101488 A 20090928; MX 2009007563 A 20090813; US 2008169079 A1 20080717; WO 2008087758 A1 20080724
DOCDB simple family (application)
EP 07012739 A 20070628; BR PI0720949 A 20070704; JP 2007063764 W 20070704; JP 2007160932 A 20070619; KR 20097016743 A 20070704; MX 2009007563 A 20070704; US 82237207 A 20070705