Core pin and a core pin device and a casting apparatus including the same

摘要

[Problems] core pin each other to provide a technique that can be secured easily to the cooling of the pin is also cast punching when arranged in cross shape. The A core pin assembly 20, with the core pin 22, the pipe member 24, an intermediate passage forming member 26, by I want to configure. The punching pins 22 B, the axial center bore 32a along the axial center line, the holding portion 22b in the formed through-hole 25 sandwiched lateral holes 32b along a direction parallel to the axial center line on both sides, and the 32c, I formed. Pipe member 24 is installed on the pin side axis center bore 34b so as to constitute the pin portion within the hole 34b1 and a double pipe structure. Also, it installed the pipe member 52 and 54 that make up the double pipe structure of the intermediate passage forming member 26 to the proximal end side axis center hole 34a. Thus, it is possible to insert the pin 42 punching another at crossing shape, it is possible to supply cooling water to the tip of the pin portion 22a. .BACKGROUND 2