1) changer 1) Location: Fixed position in the barrel between the discharge end and nose; 2) panel filter automatic changer, the flow cross-section is circular; 3) Configuration Copper heater 2; 4) duplex; with two perforated plate; (2) Hydraulic cylinders, hydraulic station set. 8, mold surface eagerly head: 1) Configure head pressure sensing device; 2) Configuration head melt temperature sensing display device; and 3) a set of configuration strip templates, heaters; 9, interlock control system ) host temperature control system Omron smart meters, there are dual-channel, PID parameter self-tuning and heater circuit indication functions; 2) Host interlock protection: single screw extruder gearbox oil pump interlock; 3) Head features melt pressure and melt temperature display, which melt pressure interlocks with the host, to achieve overpressure protection. 10, electrical control system 1) 3X380V, AC 50HZ 2) AC contactor: Siemens Product 3) hosts open space: Korea LG 4) intermediate relay; Omron products 5) temperature controller: Omron Product