The utility model provides a roll up for transformer coil vertical coil winding machine's rotary device unshakable in one's determination, it includes lower part rotary mechanism, lower part rotary mechanism including down rotary disk, ball supporting disk and locate down the rotary disk and the ball supporting disk between a plurality of balls, the ball supporting disk can be connected with the lower folder of roll iron core transformer, and it has the ball mounting hole to distribute along the circumferencial direction on the ball supporting disk, a plurality of balls inlay respectively in in the ball mounting hole, be equipped with on the lower surface of lower rotary disk with the ball mounting hole corresponding track groove in position, the coil is placed under on the rotary disk. This rotary device's appearance for vertical coil winding machine has possessed the ability of the coil of big -and -middle -sized roll of iron core transformer of coiling production.