Spinning-drawing-winding device and combined machine for industrial polylactic-acid fiber

A combined spinning-drawing-winding machine for industrial polylactic-acid fiber, comprising a spinning device and a drawing-winding device, wherein the spinning device comprises a screw extruder, an extrusion head, a melt delivering pipe, a spinning box, a spinning assembly, a heat-retarder, a monomer suction component, a combined cooling mechanism and a spinning channel component which are disposed in sequence according to a production process;

• the drawing-winding device comprises:
• a double-surface oiling mechanism, a filament shearing-suctioning device, a pre-interlacer, a splitting filament roller, a first pair of low-temperature hot rollers, a second pair of high-temperature drawing hot rollers, a third pair of high-temperature drawing hot rollers, a fourth pair of drawing-setting hot rollers and a fifth group of setting hot rollers, a sixth slacking guide disc, a porcelain guiding filament hook, a main interlacer and a winding machine which are disposed in sequence according to the production process;
• and
• a tow sequentially passes, from the spinning channel component, through the double-surface oiling mechanism, the filament shearing-suctioning device and the pre-interlacer until the tow is conveyed to the splitting filament roller;
• the drawing-winding device and the spinning device are configured as a parallel configuration, so that the tow between the spinning device and the splitting filament roller is arranged in a vertical direction and is tangential to the splitting filament roller;
• wherein the spinning assembly comprises:
• an assembly body;
• a gland, a melt distribution body, a multi-layer sieve and a spinneret which are sequentially disposed in an inner channel of the assembly body;
• and
• a ball layer, a filter layer and a distribution plate which are sequentially disposed in an inner channel of the melt distribution body along a flow direction of melt, the ball layer comprising a plurality of balls placed on the filter layer.