Stuffing filling and gas charging system of dough food product processing machine

A stuffing filling and gas charging system of a dough food product machine, at least comprising:

• a stuffing conveyance pipe, which extends through a dough feeding unit of the dough food product machine and has an end connected to a stuffing feeding unit;
• a shaft sleeve, which is sleeved over an end section of the stuffing conveyance pipe that is adjacent to the stuffing feeding unit, an outside diameter of the shaft sleeve being fit in a sealing flange and mounted under the dough feeding unit, an inside diameter of the shaft sleeve being formed with a fitting seat;
• and
• a dough driving rod, which is hollow and fit over the stuffing conveyance pipe and has an end disposed in and connected to the fitting seat of the shaft sleeve, and an opposite end being connected to a screw rod support enclosure so that the shaft sleeve, when being driven, drives the dough driving rod to simultaneously rotate in a dough trough to allow a blade to knead and extrude a dough block out to form a dough skin;
• wherein a first passage is formed between the shaft sleeve and the stuffing conveyance pipe;
• a second passage is formed between the dough driving rod and the stuffing conveyance pipe;
• and a third passage is formed between the screw rod support enclosure and the stuffing conveyance pipe;
• and
• a gas supply unit, which supplies gas to feed, in sequence, through piping into the first passage, the second passage, and the third passage, to be ejected from an outer circumference of the stuffing conveyance pipe.