Single-station packaging machine containing weighing device

The invention provides a single-station packaging machine containing a weighing device. The single-station packaging machine comprises a machine frame, a bag opening and clamping supporting base is arranged below the machine frame, a weight reducing scale feeding mechanism is arranged above the machine frame through a feeding base, the weight reducing scale feeding mechanism is arranged on the feeding base through a pressure sensor, the weight reducing scale feeding mechanism comprises a material storage bin, a spiral feeding mechanism which is arranged at a discharging port part at the lowerend of the material storage bin, a feeding port and a dust removing port, wherein the feeding port and the dust removing port are formed in the top end surface of the material storage bin, and a discharging telescopic cylinder arranged at a material conveying end port of the spiral feeding mechanism and an air extracting and dust removing mechanism arranged on the side wall of the discharging telescopic cylinder are arran