The utility model belongs to the technical field of the ball core melts the equipment that covers technique and specifically relates to a ball core melts and covers with automatic profile modeling brace is related to, including frame, transverse feeding mechanism and board panel, transverse feeding mechanism includes drive arrangement and moving platform, and the board panel sets up in the frame, and the board panel is provided with the arc track, and the axis of arc track is used for driving the profile reciprocating motion of moving platform along the arc track with the centre of a circle of ball core coincidence, drive arrangement. The automatic control linkage device of the tool has an advantage of convenient operation, and the realization replaces manual operation, the even of ball core spraying and field operation's security has improved, the current in -process that dusts has been avoided, all artifical handheld flame spray gun to ball core surface carrying out the spraying, spraying to heavy -calibre ball core surface, often need the continuous spraying number of operator hour just can reach the required thickness, because manual operation, homogeneity to sphere spraying layer thickness is difficult to guarantee, concurrent operation person's stand for a long time and high temperature scorch, can constitute the problem of hidden danger to the safety in production.