| 摘要 |
PROBLEM TO BE SOLVED: To prolong a life of a die without affecting performance of a rubber crawler and facilitate the parting of rubber crawler, by thickening a tip of a top part of the die which defines an edge part of a rubber lug such that the tip has a thickness toward the die more than a certain value. SOLUTION: A rubber lug 3 of a rubber crawler has inclined surfaces of two stages a1, a2, and an edge (b) is formed with a step thereby reducing generation of a rubber crack or the like. A perpendicular wall surface B3 perpendicular to a die C is formed at a top B2 of a part (top part B1) constituting the edge (b) of the rubber lug 3 of a die B, and a height H of the wall surface B3 is set to more than 1 mm so as not to affect performance of a shape of the lug 3 of the rubber crawler. Compared with a conventional art in which a tip 2 of the top part B1 has a considerably thin shape, the tip 2 of the top part B1 of this invention is provided with the perpendicular wall surface B3 thereby preventing the tip 3 from being caught by a top surface of the rubber lug 3, and facilitating the parting of the rubber crawler.
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