Tire vulcanization mold

摘要

A tire vulcanization mold can be configured to provide stable ventilation. For example, a tire molding surface has a ventilation groove having a rectangular shape in plan view. A blade has upper end, contact and communication sections. The upper end section thickness is smaller than a groove thickness. The contact section below the upper end section contacts both thickness-direction-facing side faces of the groove. The communication section communicates between a ventilation hole, and a small gap is formed between the groove and the upper end section. Alternatively, the blade has a groove section formed in at least one side face that faces in a blade thickness direction and extends between upper and lower blade ends to form a small gap between the groove and groove section. Air and gas pass through the gap and the communication section and vent to an exterior of the mold through the ventilation hole.

主权项

1. A tire vulcanization mold comprising:
a body defining a ventilation groove in a tire molding surface and a ventilation hole that communicates between the ventilation groove and an exterior of the tire vulcanization mold, the ventilation groove being open at the tire molding surface and having a rectangular shape in a plan view of the tire molding surface; and a blade configured to press fit and embed in the ventilation groove, the blade having an upper end section having a thickness smaller than a thickness of the ventilation groove to form a gap between a surface of the upper end section of the blade and a surface of the body defining the ventilation groove, a contact section that is below the upper end section and configured to contact both thickness-direction-facing side faces of the ventilation groove when the blade is embedded in the ventilation groove, and a communication section that communicates between the ventilation hole and the gap.