Heat transfer printing device for pre-filling and sealing needle cylinder

The utility model provides a pre-filling and sealing needle cylinder heat transfer printing device which comprises a belt type conveying mechanism, a discharging mechanism, a material pressing mechanism and laser equipment, and the upper side of the belt type conveying mechanism is used for placing and conveying a needle cylinder; the discharging mechanism comprises a discharging roller and a receiving roller, the discharging roller is suitable for winding a material roll and discharging a transfer printing belt, and the receiving roller is arranged at an interval of the discharging roller and used for winding a mother belt of the transfer printing belt; the material pressing mechanism is arranged between the material discharging roller and the material receiving roller and is used for pressing the transfer printing belt on the surface of the needle cylinder; the laser device is arranged between the discharging roller and the receiving roller, located on the upper side of the heat transfer printing belt and s