Filament extruder

A filament extruder, comprising a frame, and a feeding assembly, an extrusion assembly, a filament diameter control assembly, and a winding assembly that are arranged on the frame;

• wherein the feeding assembly comprises a hopper;
• the extrusion assembly comprises an extrusion barrel and an extrusion screw inside the extrusion barrel, a bottom of the hopper communicates with an interior of the extrusion barrel, an extrusion motor is drivingly connected to the extrusion screw, the extrusion barrel is provided with an extrusion nozzle and a heating device, the heating device is configured to heat raw materials within the extrusion barrel to be in a molten state, and the extrusion screw is configured to propel the raw materials in the molten state through the extrusion nozzle to form a filament;
• the filament diameter control assembly comprises a pair of rollers, a drive motor configured to drive the pair of rollers to rotate, and a filament diameter sensor configured for detecting a diameter of the filament, and the pair of rollers is configured to grip the filament and drive the filament to move;
• the winding assembly comprises a filament spool and a reel motor configured to drive the filament spool to rotate;
• the filament extruder further comprises a cooling assembly arranged on the frame and configured to cool the filament;
• the cooling assembly comprises a plurality of fans and a cooling air duct arranged along a movement direction of the filament, the cooling air duct is configured to support the filament for a movement of the filament, and the plurality of fans are positioned beneath the filament moved horizontally;
• and
• the filament extruder further comprises a main control assembly, the main control assembly comprises a microprocessor and an interactive screen, the main control assembly is configured as a central brain of the filament extruder, and the main control assembly is connected via cables to the feeding assembly, the extrusion assembly, the cooling assembly, the filament diameter control assembly, and the winding assembly.