Bottom sealing assembly for bag making and bagging all-in-one machine

The utility model discloses a bottom sealing assembly for a bag making and bagging all-in-one machine, which comprises a support mechanism, a sealing mechanism and a sealing mechanism, the conveying mechanism comprises a motor, two conveying rollers and two gears, the motor is mounted on one side of the mounting frame, the gears are mounted at one ends of the conveying rollers, the two conveying rollers are rotationally connected with the mounting frame, the two gears are in meshed connection, and an output shaft of the motor is in transmission connection with the gears; a heat sealing mechanism; and a cutting mechanism. When the bottom sealing device is used, the motor drives the conveying rollers to rotate through the gears, the two conveying rollers synchronously rotate through the gears, so that packaging bags are conveyed downwards, the packaging bags are kept flat in the conveying process, when bottom sealing is conducted, the air cylinder is started at the moment, the air cylinder drives the two clampi