ROLL BENDING MACHINE
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United States of America Patent
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Issued Date -
Nov 14, 2019
app pub date -
May 10, 2019
filing date -
May 11, 2018
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Abstract
A roll bending machine includes a roller unit and a tension device. The roller unit rolls and bends a strip member at a rolling rate varying in a width-wise direction of the strip member. The tension device applies tension to the strip member after being rolled by the roller unit in a rolling direction of the strip member, thereby reducing compressive stress which usually result in formation of wrinkles on the strip member. This minimizes the probability of formation of wrinkles on the strip member.
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