The main machine is a frame structure . A straightening roller is installed on the upper and lower bodies respectively. The upper roller is a concave roller and the lower roller is a convex roller. The frame straightening machine adopts the method of fixing the upper body and only lifting and lowering the upper straightening roller (through the worm gear system) to adjust the gap between the upper and lower straightening rollers. The frame structure connects the upper and lower bodies of the straightening machine into a rigid whole, which is stronger, more solid and more stable than other structures.
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