The invention relates to a
polyamide 6 POY / FDY composite fibre and a preparation method for the same. According to the preparation method,
polyamide 6 dry slices are input in a screw rod, heated, melted and filtered, and then enter a
spinning manifold, a
spinning melt is extruded from two metering pumps, a
spinning assembly and the micropores of two spinneret plate, cooled by the blowing of a
quenching ring and cured to form two bundles of yarns, and one bundle of the yarns is subjected to
nozzle oiling, pre-networking, secondary
nozzle oiling, and stretching and heat-setting between a first stretching roll group and a second stretching roll group to obtain
polyamide 6 FDY; the other bundle of the yarns is subjected to
nozzle oiling, a first
yarn guide disc and a second
yarn guide disc to obtain polyamide 6 POY; the polyamide 6 FDY and the polyamide 6 POY are input in a central networking device and a third
yarn guide disc simultaneously, and subjected to compounding through nozzles and ultra-high-speed winding forming to prepare the polyamide 6 POY / FDY composite fibre. According to the polyamide 6 POY / FDY composite fibre and the preparation method disclosed by the invention, a pneumatic spinning
quenching technology is used, thus increasing the spinning speed; the features of fast production speed, high yield, low cost,
energy conservation and emission reduction, good product quality and the like are achieved.