| 摘要 |
PROBLEM TO BE SOLVED: To provide an endless belt manufacture device attaining a sufficient vulcanization pressure and preventing some disadvantages such as entering of air into a completed product or poor adhesion accompanied by this entering state. SOLUTION: A method of manufacture of this elastic crawler 1 is carried out in such a way that a non-vulcanized endless belt-like pre-molded product 1A is integrally molded and vulcanized among a plurality of molds 31 of a crawler molding device 3. The crawler molding device 3 comprises an annular upper mold 32 for molding one end of the pre-molded product 1A in its width direction, an annular lower mold 33 arranged counter to the upper mold 32 so as to mold the other end of the pre-molded product 1A in its width direction and an annular middle core 34 arranged at an inner circumferential surface of the pre-molded product 1A so as to mold the central part of the inner circumference of the pre-molded product 1A. The upper mold 32 and the lower mold 33 are made to approach each other along an upward or downward direction so as to pressurize the pre-molded product 1A from both ends in its width direction. COPYRIGHT: (C)2005,JPO&NCIPI |
