| 摘要 |
PURPOSE:To completely engage with a sprocket without or occurring a disorder of a steel cord in rubber elastic element by forming a vacant area of a plate material at a site for scheduling to bury the cord, inserting a steel cord band, and rubber vulcanizing the same. CONSTITUTION:All the members are disposed in a cavity of a lower mold 21, a mold having a cavity for forming the outer periphery of a rubber crawler is pressed as an upper mold 22, and rubber members A-C are substantially spread in the cavity. Thereafter, the molds 21, 22 are opened, a plate material P is removed, a steel cord band 30 is inserted in the vacant area molded of a thick part, again the molds 21, 22 are closed, and pressure vulcanized. The thickness of the thick part of the material P is slightly thinner structure than the thickness of the band 30, and the pressing allowance is about 1mm. |
