An object is to provide an automatic filling and packaging device which enhances the efficiency of packaging work and which suppresses the occurrence of defective products to achieve satisfactory yield.
In an automatic filling and packaging device, a locating means, a pair of upper gusset nails, a pair of intermediate gusset nails, a pair of lower gusset nails, and a blade-equipped sealing device are formed into a unit as a unit main body, and the unit main body and the pusher member are formed to be able to freely move close to and apart from each other. In this way, as compared with a conventional automatic filling and packaging device, it is possible to reduce the total time in which one article to be packaged is filled into one packaging bag and then the opening end portion thereof is sealed, with the result that it is possible to enhance the efficiency of packaging work.