Film covering device used after natto filling

The utility model relates to a film laminating device after natto filling, which aims to solve the technical problem that the positions of packaging boxes with different sizes and specifications are inconvenient to fix at present, and comprises a film laminating machine body, an elastic component and a sliding component, the film laminating machine body comprises a machine body, a placing plate and placing holes; the placing plate is arranged on the machine body; a placing hole is formed in the placing plate; the elastic component is arranged on the placing plate; the elastic assembly comprises a containing groove, a sliding groove, a fixing sleeve, a moving rod, an adjusting block, a pressed block and a spring. Two accommodating grooves are formed in the placement plate in a central symmetry manner; sliding grooves are formed in the opposite faces of the two containing grooves. The fixing sleeve is fixedly arranged in the sliding groove. The movable rod is arranged on the fixed sleeve in a penetrating manner