Intermittent feeding device for film bag making

The utility model discloses an intermittent feeding device for film bag making, and relates to the field of film bag making equipment, the intermittent feeding device for film bag making comprises a rack and a discharging roller rotationally arranged at one end of the rack, a film roll is arranged on the discharging roller in a sleeving mode, and the discharging roller is pulled by a film to rotate around the axis of the discharging roller; a first supporting roller used for supporting a film is arranged at the other end of the rack, a buffering weight is arranged between the first supporting roller and the discharging roller, and the film between the first supporting roller and the discharging roller bears the buffering weight. Through cooperative arrangement of the first supporting roller and the buffer weight, the buffer weight falls down during bag making intermittence, so that a thin film roll released through inertia rotation of the roll releasing shaft is tightened, thin film unwinding is adjusted thro