Needle valve nozzle

Needle valve nozzle (10) for an injection mould for producing injection moulded parts, comprising a nozzle body (20) that contains at least one melt channel (30) for a melt, said melt channel (30) terminating at or in a nozzle mouthpiece (40) and having a fluidic connection to a mould cavity of the injection mould that is formed by at least one mould insert (50), and comprising a shut-off needle (60) which penetrates the melt channel (30) and the nozzle mouthpiece (40) in such a manner that it is longitudinally displaceable and suitable to be moved from an open position into a closed position, with said shut-off needle (60) comprising or forming on its lower end a shut-off part (70) which engages in closed position into a sealing seat (D), and with at least one infeed cone (46) provided ahead of the sealing seat (D) for centring the shut-off needle (60), characterised in that the nozzle mouthpiece (40) is made from a highly heat-conductive material and substantially continues the melt channel (30) cylindrically, wherein the or each infeed cone (46) for the shut-off needle (60) is formed in a centring body (80) made from a wear-resistant material, said cone being mounted on and/or in the nozzle mouthpiece (40) by positive fit and wherein an end section (84) of the centring body (80) which forms an outlet opening (44) for the melt is engageable with the mould insert (50).