Periodic bi-directional conveying device

The utility model relates to a periodic bi-directional conveying device. The device comprises a motor, a motor seat, bolts, a shaft coupling, a driving shaft, a small bevel gear, a big bevel gear, a tapered shaft, a crank, a base, a guide rod seat, guide rods, cylindrical gears, connecting shaft supports, screws, a workbench, racks, a connecting shaft, a pushing plate, a connecting rod and guide grooves, the motor is connected with the driving shaft through the shaft coupling, the small bevel gear is installed on the driving shaft and meshed with the big bevel gear installed on the tapered shaft mutually, the crank is installed on the tapered shaft and connected with the pushing plate through the connecting rod, the guide rod seat and the base are integrally processed parts, and the guide rods are fixed on the base through the guide rod seat. The periodic bi-directional conveying device has the advantages that the structure is simple, the conveying is stable, long-distance conveying tasks can be achieved, the occupied space is small, the device is suitable for being applied in small production workshops, the manual operation and labor cost can be reduced effectively, and the production efficiency is improved.