| 摘要 |
PURPOSE:To prepare a high quality toothed belt, by a method wherein a preliminarily fabricated reinforcing fabric with a tooth shaped mold is correctly arranged along the tooth part of an inner metal mold and a liquid resin (a polyurethane elastomer) is thereafter injected to carry out molding processing. CONSTITUTION:Both side parts of a reinforcing plate with a tooth shaped mold obtained by molding a reinforcing plate impregnated with a liquid resin are filled with a urethane foam 5 to form a reinforcing fabric 4b with a connecting segments. In the next stage, the above described reinforcing fabric 4b is wound around a cylinderical inner metal mold 12 in an endless form while inlaid with tooth shaped grooves 13. Subsequently, a rope tensile body 15 are spirally wound around the outer periphery of the reinforcing fabric 4b and a cylindrical outer metal mold (not shown in a drawing) is concentrically attached to inject a liquid resin into the formed gap part and to cure the same therein. The obtained molded body is cut in round slices at a predetermined width to obtain a toothed belt. |
