Melt impregnation device with automatic lifting channel for additive manufacturing filaments

A composite filament melt impregnation device with an automatic lifting channel configured for additive manufacturing, comprising a mechanical lifting device, a heating device, a curved resin impregnation channel, a filament guide block, a single screw extruder, a replaceable combination die nozzle, and a resin riser, wherein the curved resin impregnation channel moves up and down through the mechanical lifting device;

• the heating device comprises multiple sets of heating blocks for controlling an impregnation temperature up and down the curved resin impregnation channel;
• the filament guide block is located at a fiber inlet in a front of the curved resin impregnation channel, and the single screw extruder is located on a side of the curved resin impregnation channel and configured so that molten resin is uniformly delivered into the curved resin impregnation channel;
• molten resin is uniformly delivered into the curved resin impregnation channel;
• the replaceable combination die nozzle is located at a rear part of the curved resin impregnation channel;
• the resin riser is located below the replaceable combination die nozzle;
• and the curved resin impregnation channel is an S-shaped curved channel formed by fitting upper and lower pressure blocks having trapezoidal slots.