Sewing device for flexible freight bag

The utility model belongs to the technical field of flexible freight bags, particularly relates to a sewing device for a flexible freight bag, and aims to solve the problems of low sewing efficiency and low sewing quality caused by the fact that the existing equipment cannot flatten the flexible freight bag and flatten the flexible freight bag, the following scheme is provided: the sewing device comprises a base, a support block is fixedly arranged on the top of the base, and the support block is fixedly arranged on the support block; a first motor is fixedly installed on the side face of the supporting block, two first transmission rods are rotationally connected to the supporting block, an output shaft of the motor is fixedly connected with one of the two first transmission rods, a through hole is formed in the base, two second transmission rods are rotationally connected to the through hole, and the second transmission rods are fixedly connected to the base. And the first transmission rod and the second tr