A Venting Apparatus for a Tire Vulcanizing Mold

• Main Authors: MYEONG HUN AHN, IN SEOG JANG, YONG SUB KIM
• Format: Patent
• Language: English; French; German
• Published: 14.01.2004
• Edition: 7
• Subjects: ACTUATING-FLOATS; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; LIGHTING; MECHANICAL ENGINEERING; 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; TAPS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VALVES; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present invention relates to an improved venting apparatus installed in a tire vulcanizing mold (40). In the venting apparatus, an inner diameter of a center through hole (46) formed in the casing (44) is gradually increased in an upper direction and is gradually decreased in a lower direction for thereby forming a tapered shape. The angles of the slant surfaces of the valve head (56) point-contacting with an upper corner portion (58) of the center through hole (46) are different, so that a discharging capability of air is enhanced, and it is possible to prevent a formation of a vent rubber in a finished tire which vent rubber is formed when a rubber flows into a venting apparatus. In addition, it is possible to prevent an error operation during a vulcanization and to extend a life span of a venting apparatus. The maintenance is easier.