Material box device for transferring covering materials for electrolytic aluminum

The utility model discloses a material box device for transferring covering materials for electrolytic aluminum. The material box comprises a tray support and a material box body. The tray support comprises a tray body, a material box bracket is fixedly arranged above the tray body; a tray is arranged on the material box bracket; a lifting lug is arranged at the top of the material box body; an angle steel bracket is fixedly arranged on the outer wall of the material box body; wherein a bag bottom plate is arranged at the bottom of the material box body, two symmetrical lower opening switchesare arranged at the bottom of the material box body, each lower opening switch is composed of a reinforcing steel plate, a bearing and a shaft, each shaft is in rigid connection with the correspondingreinforcing steel plate, each bearing is arranged on the corresponding shaft in a sleeving mode, and the two ends of the bag bottom plate are in rigid connection with the shafts respectively. The material box device has the a