This unit is an integral part of the combined drawing machine, mainly used for straightening the bar, with the advantages of high precision and high speed. It is driven by two motors independently, and drives the universal coupling and the main drive shaft to rotate after frequency conversion, and the rollers mounted on the main drive shaft also rotate at the same time.

The center height of the vertical two-roller is adjustable. When the wire diameter of the finished product changes, the two rollers should be parallel adjusted to a position slightly larger than the specification of the material to be processed.