PCB (Printed Circuit Board) transfer platform, PCB loading and unloading system and PCB processing system

The invention relates to a PCB (Printed Circuit Board) transfer platform, a PCB loading and unloading system and a PCB processing system. The PCB transfer platform comprises a machine frame and a first conveying device, the machine frame is provided with a plurality of conveying stations used for conveying PCB materials in the first direction, the first conveying device comprises at least one driving part and a plurality of conveying assemblies, one conveying assembly corresponds to one conveying station, the multiple conveying assemblies are arranged on the machine frame, and the driving part is arranged on the machine frame. The driving parts are connected with the conveying assemblies in a one-to-one correspondence mode, and/or one driving part is connected with the multiple conveying assemblies, the driving parts are used for driving the multiple conveying assemblies to be in butt joint with the workbench in the second direction to convey the PCBs, temporary storage mechanisms are arranged on the conveyin