The feed system of the Polybend machine features a motorized rollertype straightening unit and a water-cooled electric servo drive, ensures output with a minimum of maintenance and dimensional accuracy of the products. The motorized straightening roll adjustment in the roller-type straightening units, adapted to wire diameter and quality, results in short change over times and easy operation. The automatic stirrup bending machine is controlled by CNC system and can accomplish straighten, bend and cut coil wire and straight bars automatically instead of 20-30 workers. This greatly reduces labour and save cost.