Heat seal packaging device

The utility model relates to a heat seal packaging device and belongs to the field of packaging devices. The bag-packed mode of the heat seal packaging device is a back seal mode. After a pair of longitudinal seal rollers are heated, opposite edges of a packaging film are tightly pressed so that a back seal can be formed and after a pair of transverse seal rollers are heated, the ends of the packaging film are tightly pressed so that a transverse seal can be formed. A fixed cutter is installed in the middle of the press fit portion of one transverse seal roller and a moving cutter is correspondingly arranged on the other transverse seal roller. When heat sealing is accomplished, the middle of the transverse seal is cut and packaging materials continuously conveyed downwards are divided into units of the equal length. In addition, pressure between the transverse seal rollers and pressure between the longitudinal seal rollers are adjusted through a bolt mechanism. The purpose of pressure regulation is achieved