Tungsten needle online feeding system and method for improving production efficiency of radio frequency cable

The invention discloses a tungsten needle on-line feeding system for improving radio frequency cable production efficiency, which comprises a first bracket, a mobile platform, a welding gun, a rotary driving mechanism and a laser processor, and is characterized in that the laser processor is mounted on the first bracket and emits high-energy sheet laser; and the needle head of the tungsten needle is machined into a required cone in the rotating and downward moving process of the tungsten needle. The method comprises the steps that according to the loss speed of a tungsten needle, a mobile platform is set to control a welding gun to move downwards by a set distance every set time; in the process that the welding gun moves downwards, high-energy sheet-shaped laser emitted by the laser processing device is irradiated to the head of the tungsten needle, and meanwhile, the rotating driving mechanism drives the welding gun to rotate and controls the tungsten needle to rotate. Tungsten needles can be polished withou