Flexible cable for industrial robot

The invention discloses a flexible cable for an industrial robot, and relates to the technical field of cable wires, a shielding layer is arranged on the inner side of an outer wrapping layer, a cable core wire is arranged on the inner side of the shielding layer, a fixing ring sleeves the outer wrapping layer, a fastening bolt is arranged on the fixing ring, a nut is embedded in the outer wrapping layer, and the fastening bolt is in threaded connection with the nut. A first rubber hose and a second rubber hose are arranged on the two sides of the fixing ring respectively, water is arranged in the first rubber hose, powder made of hydraulic materials is arranged in the second rubber hose, the first rubber hose and the second rubber hose are communicated through a connecting pipe, and an elastic film is arranged at the end, close to the first rubber hose, of the connecting pipe. One end of the connecting pipe close to the second rubber hose is provided with a pricking needle. According to the invention, the pr