Sewing machine special for flexible freight bags

The utility model discloses a special sewing machine for flexible freight bags, which belongs to the field of sewing machines and comprises a base, a sewing machine is fixedly arranged on the upper end face of the base and provided with a sewing head, and a thread coil and a sewing needle are respectively arranged at the top and the bottom of the sewing head. According to the sewing machine special for the flexible freight bag, the conveying belts which are stacked up and down are arranged to clamp the side faces of the two sides of the flexible freight bag piece respectively, then the flexible freight bag piece is driven by friction force of the conveying belts to be conveyed forwards, the bottom of the flexible freight bag piece is supported in cooperation with the sewing table, and the situation that the conveyed middle is sunken and wrinkles are formed is avoided; the surface of the flexible freight bag sheet rolled by the roller is kept flat, the sewing quality and the sewing efficiency of the sewing mac