Bushing device water conduction mechanism and production method therefor

摘要

and for the cooling hole of the mold provides a cooling device or the like bush to enhance the adhesion to the cooling device with a simple configuration. Collar 12 is interposed in the cooling holes (82) and cooling bush 14. And the inner surface of the collar is tapered, the outer diameter is the same as the hole diameter of the cooling hole. And a taper corresponding to the taper of the outer surface of the cooling bush collar. When attaching the cooling Bush and color (Bush cooling device (10)), Bush is pressing the cooling collar beolrinda is close to the collar by the wedge effect of the tapered cooling balls. That is, the cooling sikimeuro bush and cooled to a combined structure for fitting between the taper of the bush collar and contact the cooling unit ball, without lowering the efficiency of heat transfer can be a temperature adjustment of the mold. Further, since a simple machine structure for engaging the adhesion taper between the cooling bush and the collar, to reduce the effort, such as in an exchange as compared to the configuration of interposing the metal dissolved in a gap between the prior art cooling ball and molds the molten metal cooling fin and it can become easy to use. ;