VENT PLUG AND TIRE CURING MOLD HAVING THE SAME

摘要

PURPOSE: A vent plug and tire curing mold having the same is provided to improve the external quality of a tire by allowing the exhaust of air and preventing the projection of rubber. CONSTITUTION: In a vent plug(10), a circular hole(4) is formed at the bottom of a plug body(1) composed of a cup-shaped cylinder. A core(2) is composed of a solid cylinder. A knurling part(3) is formed at the circumference of the solid cylinder, and is fit into the circular hole. The diameter of the circular hole is less than the inner diameter of the cup-shaped cylinder. Thus, a gap is formed between the core and the plug body except the knurling part.