Four-head welding machine is a special machine for processing upvc doors and windows. The machine guarantees the welding strength, welding accuracy and durability of upvc windows and doors through plc programmer control, pneumatic driving system, and high-accuracy liner bearing motional pairs. The movements of profile clamping, profile melting, and frame fabricating are controlled by a plc, and all the movements are finished one by one automatically, easy to operate. Additionally, good-performance and long-life pneumatic components, imported industrial plc in control system, and high-strength machine construction, guarantee the service life of the upvc window welding machine. The machine is one of essential upvc window manufacturing machines. Technical parameter Power supply 380v/220v 50hz (optional) Input power 4.5kw Working air pressure 0.4-0.6mpa Air consumption 200l/min Welding profile height 20-120mm Welding profile width max ¡ü120mm Welding dimension range 400-4300mm Outside dimension 5300*1000*1700mm Weight 1600kg