Printing machine with cold foil roller

A printing machine with a cold foil roller, comprising:

• a printing plate roller, having a plate disposed thereon, and two side edges of the plate being fixed to the printing plate roller, and the plate being pulled and attached to an outer surface of the printing plate roller, and having an engraved groove formed on the plate and designed with a preset graphic;
• an ink roller set, installed and attached to a side of the printing plate roller, for introducing an ink and water into the engraved groove;
• a transfer roller, installed and attached on another side of the printing plate roller, and provided with a transfer layer;
• a material catching roller, installed and attached on a side of the transfer roller, for receiving a printing carrier;
• and
• a hollow roller, installed and attached on a side of the material catching roller, and having a wheel wall with a material inlet and a material outlet formed thereon, a driving motor, an infeed wheel, a first inner wheel, a second inner wheel and an outfeed wheel which are installed in the hollow roller, and the driving motor being coupled to a control element and provided for synchronously transmitting the infeed wheel and the first inner wheel, and the second inner wheel being disposed on a side of the first inner wheel, and the driving motor rotating asynchronously with the hollow roller through the setting of the control element, and the outfeed wheel having a cold foil with an end wound outwardly from the material outlet attached to an outer surface of the wheel wall to the material inlet, passed between the first inner wheel and the second inner wheel, and then fixed to the infeed wheel.