BORE PIN AND CASTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a bore pin and a casting device capable of restraining resistance force in mold release time with a simple constitution, and capable of also improving maintainability.SOLUTION: A bore pin 10 of a casting deice 12 comprises an insertion-fitting part 22 inserted into and fitted in a bottomed cylindrical pin body 20. A cooling flow passage 46 formed in the insertion-fitting part 22 comprises an introduction pipe 30 for guiding a refrigerant to an inner end surface 34 on one end side of the pin body 20 and a cooling groove 38 formed along the longitudinal direction on an outer peripheral surface of the insertion-fitting part 22 and guiding the refrigerant guided to the inner end surface 34 to the other end side of the pin body 20. The cooling groove 38 is formed so that an opening width becomes narrow and the groove depth becomes deep toward the other end side from one end side of the insertion-fitting part 22.SELECTED DRAWING: Figure 1