Vacuum packaging device

1. A vacuum packaging device, comprising:

a vacuum packaging unit configured to vacuum-package a packaging sheet; and

a cutting unit formed in the vacuum packaging unit to form a tearing notch on the packaging sheet,

wherein the tearing notch is positioned on a side portion of the packaging sheet and formed at a position adjacent to contents in the packaging sheet rather than at a thermally bonded portion of the packaging sheet to open the thermally bonded and sealed packaging sheet afterward,

wherein the cutting unit comprises:

a cutting member configured to cut the packaging sheet to form the tearing notch; and

a driving part installed in the vacuum packaging unit to be connected to the cutting member and move the cutting member to cut the packaging sheet,

wherein the vacuum packaging unit includes a housing connected to a vacuum pump of the vacuum packaging unit,

the driving part includes a moving member with the cutting member mounted therein and installed to reciprocate to the packaging sheet in the housing,

the housing includes a connecting tube formed in a lower portion thereof, and the connecting tube is connected to an air suction part of the vacuum pump, and

the vacuum pump is configured to suction the air from the housing to form a negative pressure in the lower portion of the housing such that the moving member in which the cutting member is mounted moves in a downward direction to cut the side portion of the packaging sheet and form the tearing notch.

2. The vacuum packaging device of claim 1 , wherein the driving part further includes an elastic member installed in the housing to elastically support the moving member and apply an elastic force reversely to the moving member when the moving member moves by the change in air pressure in the housing.

3. The vacuum packaging device of claim 1 , wherein the moving member comprises:

a moving body disposed in the housing; and

a fastening part extending from the moving body to pass through a moving hole formed in the housing.

4. The vacuum packaging device of claim 3 , wherein the moving body includes an O-ring mounted therearound to tightly contact an inner surface of the housing.

5. The vacuum packaging device of claim 1 , wherein a guide plate having a guide slit configured to guide and support the cutting member when the cutting member is inserted and moves, is installed on the housing.

6. The vacuum packaging device of claim 1 , wherein a guide groove configured to guide and support the cutting member when the cutting member is inserted and moves, is formed in a vertical direction on the housing.