EP 2335844 A1 20110622 - METHOD OF MANUFACTURING CASTING FOR MOLD FOR MOLDING TIRE
Title (en)
METHOD OF MANUFACTURING CASTING FOR MOLD FOR MOLDING TIRE
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER GUSSFORM ZUR REIFENFORMUNG
Title (fr)
PROCÉDÉ DE FABRICATION D UNE COULÉE POUR UN MOULE DESTINÉ À MOULER UN PNEUMATIQUE
Publication
Application
Priority
- JP 2009060904 W 20090615
- JP 2008233981 A 20080911
Abstract (en)
Provided is a method of manufacturing a casting for a mold for molding a tire, wherein twist and warp deformation of each block of the casting is less likely to occur when the casting shrinks, the difference between the degrees of shrinkage of cope and drag is small, the casting, even if large-sized, can be produced in a relatively short molten metal solidifying time, and healthy castings can be easily obtained. A method of manufacturing a casting for a mold for molding a tire of a sectional mold type in which the mold is opened and closed by dividing the mold into a plurality of pieces in the circumferential direction comprises a process of manufacturing each of divided block castings (1) by casting them individually. In this process, molten metal is poured into a casting mold where chills are disposed on four sides, the sides being an upper surface portion (2a), a lower surface portion (2b) and both sides of circumferentially divided surfaces (3a, 3b), and surrounding from four directions a design surface (6) which is a contact surface with the mold from four directions, such that at least the chills surround the design surface (6) continuously.
IPC 8 full level
B22C 9/00 (2006.01); B22C 9/06 (2006.01); B22C 9/08 (2006.01); B29C 33/02 (2006.01); B29C 33/38 (2006.01); B29L 30/00 (2006.01)
CPC (source: EP US)
B22C 9/06 (2013.01 - EP US); B22C 9/08 (2013.01 - EP US); B22C 9/28 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2335844 A1 20110622; EP 2335844 A4 20131127; EP 2335844 B1 20190605; CN 102149490 A 20110810; JP 2010064115 A 20100325; JP 5243157 B2 20130724; US 2011174460 A1 20110721; WO 2010029802 A1 20100318
DOCDB simple family (application)
EP 09812950 A 20090615; CN 200980135688 A 20090615; JP 2008233981 A 20080911; JP 2009060904 W 20090615; US 200913059771 A 20090615