| 摘要 |
PURPOSE:To contrive simplification and speedup of replacement work, by a method wherein a die plate on which a mold for the identification bar of a tire is formed is manufactured separately, a recessed part in which the die plate is buried is provided on the surface of a mold so that the die plate is replaced according to the variation of a kind and the other matter. CONSTITUTION:The molding part 2 of a halved state tire is formed on a mold 1 and a circular arcform recessed part 5 for burying a die plate 3 flush and securing it with screws 4 and 4 is formed on a molding face of the molding part 2 corresponding to a molding part of an identification bar. The die plate 3 is constituted with a circular arcform flat plate to be fitted in the recessed part 5, both end parts of which are provided with threaded holes 6 and 6. It is desirable that the die plate 3 is made of a metal identical with that of the mold 1 and when the die plate 3 is magnetized it can be attracted and secured by simply fitting in the recessed part. As the die plate, therefore, can be replaced according to the variation of a kind, a production lot, date of manufacture and others of a tire, it becomes unnecessary to engrave an identification bar directly on the mold and to replace the mold itself. |
