Multi-station metal stamping die and process thereof

The multi-station metal stamping die comprises a multi-station stamping machine, conveying equipment and collecting equipment, and the conveying equipment and the collecting equipment are correspondingly arranged at the input position and the output position of the multi-station stamping machine respectively. The transmission device comprises a metal sheet transmission assembly, a correction assembly, a transition transmission assembly and two metal sheet flatness measurement assemblies. According to the multi-station metal stamping die, during stamping, the surface of a metal sheet is subjected to flatness detection through the metal sheet flatness detection assembly at the input position of the correction assembly, if the metal sheet is qualified, the correction assembly is not started, and the metal sheet is directly conveyed and placed on a multi-station stamping machine to be stamped; after correction, secondary detection is carried out through the metal sheet flatness measuring assembly at the output po