Automatic feeding and discharging mechanism

The invention aims to provide the automatic loading and unloading mechanism which is compact in structure, has a defective product recognition effect and efficiently treats the product carrier plate. The device comprises a base, a manipulator module, a plurality of lifting and transferring modules, a code scanning module, a plurality of butt joint modules and a defective material placing module, the manipulator module is arranged in the middle of the base, and the lifting and transferring modules are arranged on the two sides of the base; the code scanning module, the multiple butt joint modules and the defective material placing module are all arranged on the base, the code scanning module is arranged on the periphery of the mechanical arm module and matched with product code scanning, and the multiple butt joint modules are correspondingly matched with the multiple lifting transferring modules. The multiple butt joint modules are correspondingly matched with an external feeding trolley in a limiting mode, a