Patent ID: 6767493
Filing Date: 2004-07-27
Classification: B29C,B29D,B29K,B29L

Abstract:
A method of manufacturing a rubber crawler comprising a first vulcanization step of vulcanization-shaping by simultaneously heating and pressing inner circumferential side rubbers and ground side rubbers each having a length corresponding to approximately a half circumferential length of an endlessly ring-shaped reinforcing cord among a middle mold arranged at an inner circumferential side of the reinforcing cord and upper and lower molds arranged upside and downside on an outer circumference of the reinforcing cord, and a second vulcanization step of subsequently vulcanization-shaping rubbers corresponding to approximately a remaining half circumferential length of the reinforcing cord in the same manner as in the first vulcanization step, characterized in that at least the middle mold is heated by passing heat medium through flow paths formed in such a mold at each vulcanization step.