Submerged-entry nozzle centring device

The present invention relates to a submerged-entry nozzle centring device. The present invention comprises: a plurality of laser beam generators (20) arranged in such a way as to irradiate laser beams towards the centre of a continuous-casting mould (3) from the upper part of the mould (3); a tundish-conveying mechanism (15) for conveying a tundish (1) over the mould (3); and a control means which is connected to the laser beam generator (20), and which controls the operation of the tundish-conveying mechanism (15) in such a way as to centre the positioning of a submerged-entry nozzle (5) provided on the lower part of the tundish (1) by means of a signal received from the laser beam generator (20). The present invention can not only centre the submerged-entry nozzle (5) in a way which is both accurate and fast, but it can also maintain the submerged-entry nozzle (5) constantly fixed at the centre and can thus minimise the phenomenon of drifting of the molten steel. Consequently, it has the advantage that it c