SPRUE BUSH FOR INJECTION MOLD FOR COOLING EFFICIENTLY

摘要

PURPOSE: The leading end of the sprue bush is efficiently frozen with the cooling fluid passing through the cyclic type coolant gallery.;CONSTITUTION: A sprue bush(41) for injection mold comprises a body(141) and a ring type member(142). A first flow path forming groove(141a) of the ring shape is formed in the outer circumference of the leading end of the body concavely. A second fluid path forming groove(142a) is formed in the inner circumference of the ring type member. The second fluid path forming groove forms a annular cooling passage(14c) with the first flow path forming groove.;COPYRIGHT KIPO 2012