Plastic-package-bag sealing device having adaptation adjusting function

The utility model discloses a plastic-package-bag sealing device having an adaptation adjusting function. The plastic-package-bag sealing device comprises a conveying device (4) and a sealing device (11), wherein the sealing device (11) and the conveying device (4) are installed in parallel, a transmission device installed inside the sealing device (11) drives the sealing device (11) and simultaneously drives the conveying device (4), and a lifting adjusting device and a height adjusting device are installed at two ends of the conveying device (4) respectively. According to the plastic-package-bag sealing device, the conveying device is provided with the lifting adjusting device, and therefore the height of the conveying device can be adjusted according to the sizes and the thicknesses of packaged and sealed article bags. During heat-seal operation, continuous manual operation is not needed, sealed mouths are prevented from being damaged in a pulled mode, and wrappings are prevented from being damaged. The pl