Screwing machine

A screwing machine being in combination with:

• a suction jig having a suction head;
• and
• a blowing jig having a target head,
• the screwing machine comprising:
• a machine frame;
• a fastening device having a screwdriver;
• a first moving mechanism for moving the machine frame, wherein the suction jig and the blowing jig are alternatively mounted on the screwing machine;
• when the suction jig is mounted on the screwing machine, the suction jig is connected to the fastening device, and the screwdriver of the fastening device passes through the suction jig and the suction head of the suction jig;
• the suction jig conducts a suction to attract at least one first screw to the suction head of the suction jig, such that the screwdriver of the fastening device fastens the first screw to a workpiece, and, when the blowing jig is mounted on the screwing machine, the blowing jig is connected to the machine frame, wherein the blowing jig conducts a blowing to supply a second screw to the target head of the blowing jig;
• and
• a second moving mechanism connecting the fastening device to the machine frame, for moving the fastening device relative to the machine frame, such that when the blowing jig is connected to the machine frame, the screwdriver of the fastening device passes through the blowing jig to the target head of the blowing jig for fastening the second screw to the workpiece, and when the suction jig is connected to the fastening device, the screwdriver of the fastening device passes through the suction jig to the suction head for fastening the first screw to the workpiece.