B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
B22C 9/10 (2006.01) B22C 9/02 (2006.01) B22D 13/00 (2006.01) B22D 29/00 (2006.01)
Patent
CA 2343658
An apparatus and method are disclosed for extracting a cast iron pipe from a centrifugal casting machine and for also breaking the continuity of an annular sand core used to form the bell end of the pipe. The apparatus has a carrier member on which are mounted extractor carries jaw assemblies and core continuity breaking members. The extractor jaw assemblies are movable between extended and retracted positions. One end of the carrier member is inserted into the bell end of the pipe while the pipe is in the casting machine. The extractor jaw assemblies are retracted as the carrier member enters the pipe. As the carrier member enters the pipe, the core continuity breaking members plow through parts of the sand core to break the continuity of the sand core. The extractor jaw assemblies are then extended to contact the interior surface of the pipe wall and the apparatus is retracted, pulling the pipe out of the mold in the casting machine. The sand core is broken into pieces and the chunks of the sand core fall out of the pipe. The pipe may then be processed in the normal manner.
Amsted Industries Incorporated
Gowling Lafleur Henderson Llp
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