| 摘要 |
PROBLEM TO BE SOLVED: To provide a deflection correction method for a formed product in a roll forming apparatus which enables smooth correction of deflection occurring in the formed product without necessity for increase in an equipment cost or installation space. SOLUTION: In a roll forming apparatus which forms a channel type formed product passing a long panel type flat steel through a plurality of forming rolls sequentially, the forming rolls 2 among a plurality of the forming rolls decide a width dimension between both upright side parts A1 of the formed product A, while an upper roll 21 of the forming rolls 2 is moved upward or downward to correct a deflection of the formed product. In case a middle portion of the formed product A is convexly deflected, the upper roll 21 is moved upward, and in case a middle portion of the formed product A is concavely deflected, the upper roll 21 is moved downward. COPYRIGHT: (C)2003,JPO
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