Mark D Knerr

US Patent:

20110168347, Jul 14, 2011

Filed:

Jan 14, 2010

Appl. No.:

12/687730

Inventors:

Mark D. Knerr - Wentzville MO, US

Assignee:

Toyota Motor Engin. & Manufact. N.A.(TEMA) - Erlanger KY

International Classification:

B22D 29/00
B22D 17/00

US Classification:

164131, 164284

Abstract:

An apparatus for core gas removal in a low-pressure cylinder head die casting operation includes an upper die, a lower die, an ejector plate disposed above the upper die to eject a part that has been cast, a plurality of tight plugs fastened into cavities formed in the upper die, and a plurality of clean pins attached to the ejector plate, each clean pin corresponding to a location of one of the tight plugs. The clean pins and the tight plugs have matching geometries. The ejector plate lowers to eject a casted cylinder head from the upper die such that a portion of the clean pins extend axially into the tight plugs to clean core gas residue formed on inner walls of the tight plugs during the casting cycle.