Finger-type turning down and turning up device of tyre building machine

The invention provides a turning down and turning up device of a tyre building machine, which is a finger-type rod opening-closing mechanism arranged on one side of an assembly drum and a pull ring device which is matched with the finger-type rod opening-closing mechanism and performs turning up on wirecord fabric, wherein the turning up pull ring device is positioned at a port of the assembly drum on one side of the assembly drum and comprises an expanding-contracting mechanism capable of extending along the radial direction; the finger-type rod opening-closing mechanism comprises a finger-type rod moving ring and a finger-type rod limit cylinder which are sleeved; a finger-type rod is hinged with the finger-type rod moving ring through a torsion spring; the finger-type rod limit cylinder is provided with a beadsetter ring expanding-contracting mechanism for clamping a tyre bead; and the finger-type rod moving ring moves towards the inside of the finger-type rod limit cylinder and the finger-type rod shrinks