Patent ID: 7530730
Filing Date: 2009-05-12
Classification: B29C

Abstract:
1. A heat exchanging mechanism for exchanging heat between a medium and a molten material included in a screw receiving portion of a cylinder, the cylinder having drill holes that are linearly formed in a direction crossing the screw receiving portion; a flange having through-holes respectively corresponding to the drill holes and a communication portion for communicating the through-holes with each other, the flange being detachably attached to the cylinder such that the through-holes respectively correspond to the drill holes; and detachable siphon pipes that pass through the through-holes of the flange to be inserted into the drill holes, respectively, wherein first gaps are formed between the siphon pipes and the through-holes of the flange, respectively, wherein second gaps are formed between outer circumferences of the siphon pipes and inner circumferences of the drill holes, respectively, and wherein front end spaces are formed between front ends of the siphon pipes and deepest portions of the drill holes, respectively.