Material taking and placing structure of hard substrate printing machine

The utility model belongs to the technical field of automation equipment, and particularly relates to a material taking and placing structure of a hard substrate printing machine. The fixed frame is fixed to a lifting sliding block in the middle of the electric screw lifting module through a bolt, a plurality of layers of material frames are movably connected into the fixed frame in an inserted mode, and the material frames are movably connected through fixing buckles on the side edges; the left side of the printing main machine is connected with the hard substrate pushed out by the discharging structure through the material arranging conveying belt, then the hard substrate is adsorbed, grabbed and placed on the material taking and discharging printing platform through the discharging mechanical arm assembly to be fed into the printing structure to be printed, and the printing main machine is reset and jacks up the hard substrate after printing is completed. And then the material receiving manipulator assembl