Semiautomatic bottom sealing device of plastic bottom-folded bag

The invention relates to a semiautomatic bottom sealing device of a plastic bottom-folded bag, and relates to the technical field of packaging bag manufacturing devices. The semiautomatic bottom sealing device comprises a machine frame, a supporting mold, a hot-press mold and a driving mechanism. At least one supporting mold is movably installed on the machine frame. The driving mechanism is alsoinstalled on the machine frame. The driving mechanism drives the hot-press mold to rise or fall. When the supporting mold is located on a sleeving station, the supporting mold is manually sleeved withthe plastic bottom-folded bag. When the supporting mold moves to a hot-press station, the bottom of the plastic bottom-folded bag is just driven by the supporting mold to the place under the hot-pressure mold. When the hot-press mold falls to the lowest position, the bottom of the plastic bottom-folded bag is attached through pressing and heating. The semiautomatic bottom sealing device has the advantages of being stable