Automatic feeding and discharging device of box-type heat treatment furnace

The utility model relates to the technical field of heat treatment furnaces, in particular to an automatic feeding and discharging device of a box-type heat treatment furnace, which comprises a box body, a plurality of groups of adjusting mechanisms are arranged on one side of the box body, a feeding retraction mechanism is arranged on the adjusting mechanisms, and the feeding retraction mechanism comprises a driving component and a telescopic component. The driving assembly comprises a positioning plate, a motor is embedded in one end of the positioning plate, a movable groove is formed in one side of the positioning plate, a first threaded rod is rotationally connected to the inner side of the movable groove, and the driving end of the motor extends to the end of the inner side of the movable groove to be fixedly connected with the first threaded rod. The two ends of the outer side of the first threaded rod are in threaded connection with movable blocks. The material taking and placing device is simple in s