Tire molding die and method for producing tire

• Main Author: KUROISHI KAZUYA
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2016
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

In the present invention, a non-penetrating bent hole (44) is provided to one end side of a protrusion-molding concavity (42) of a mold, and a penetrating bent hole (46) that is longer than the non-penetrating bent hole (44) is provided to the other end side. When rubber for a green tire enters the protrusion-molding concavity (42), the air therewithin is discharged from the penetrating bent hole (46), and the minute amount of air remaining inside escapes to the non-penetrating bent hole (44). The volume of the penetrating bent hole (46) is set to be large, and the rubber that enters into the bent holes and that will later be spews can be stopped inside. The volume of air that has lost a place to go within the protrusion-molding concavity (42) is minute, and so the volume of air escaping into the non-penetrating bent hole (44) is also minute. As a result, it is possible to suppress the phenomenon of the portions of rubber contacting air in the non-penetrating bent hole (44) from becoming sticky after vulcaniz