| 摘要 |
PROBLEM TO BE SOLVED: To provide a toothed belt producing method capable of accurately setting the position of the joint part in cylindrical canvas sewn by a sewing machine, eliminating the bleeding of rubber from the joint part to improve appearance and preventing the early cracking or sounding from the joint part. SOLUTION: A process inserting a metal insert rod 10 into the joint part 4 sewn by a sewing machine positioned on the outside of cylindrical canvas 1, a process mounting the cylindrical canvas 1 into which the insert rod 10 is inserted on a mold so that the insert rod 10 is positioned in a mold groove part 12 and pushing the cylindrical canvas 1 in the groove part along with the insert rod 10 by the magnetic force of the magnetic body 17 arranged to the mold groove part 12 to form a preformed object 8 and a process pulling off the insert rod 10 and the magnetic body 17 to spin a core wire comprising a cord around the preformed object and laminating unvulcanized rubber thereon and vulcanizing and molding the whole so that the unvulcanized rubber flows in the mold groove part 12 to produce a belt sleeve are provided. |
