CO2 welding wire layer winding machine (a) Φ630 pay-off machine,15KW,ac motor inverter braking, air brake. (b) pay-off adopts self-adaptive constant tension active pay-off,automatic matching of take-up speed of layer wrapping machine,use active pay-off and reliable guarantee for loose wires, and diameter of plate and prevent Fried dish phenomenon. (c) mid-tensile machine adopt pneumatic institutions and constant tension, stability pay-off. (d) host by 5.5 KW motor frequency conversion drive, air brake braking. (e) PLC control servo motor, CNC electronics automatic winding dispalcement and layer wrapping. (f) the machine can back-wind, the dynamic real-time display function: layer wrapping speed, weight, preset weight, full count slow automatic parking. Using human-machine interaction interface, display and input technology parameters. (g) disorderly wire, break-off, exceed scope of tension, automatic parking brake. (h) weight precision ≦0.3%