The machine is composed of gantry pay-off machine, electric control box and rock arm type extension frame. The pay-off extension can be adjusted according to needs and feedback signal issued by rock arm type extension frame is used to realize the constant extension during the pay-off process, thus, the deformation of copper wire or core wire during the pay-off process is avoided. The line wheel installs or lifts off hydraulic lifting and manual clamp position. The machine is the necessary equipment for manufacturing communication, controlling computer network and other cables with relatively high requirements.