Laser envelope stripping method

The invention discloses a laser envelope stripping method which is mainly used for stripping an envelope outer coating, an envelope inner coating and a shielding layer. Four laser beams, upper G1, upper G2, lower G1 and lower G2 are respectively arranged on four focusing lenses, wherein the four focusing lenses the centers of which are on the same circumference are mutually spaced at an angle of 90 DEG; optical axes of the four focusing lenses are converged on a stripping sample; during envelope stripping operation, firstly the upper G1 and the upper G2 are focused and then pass through the upper surface of an electrical wire with an angle of 45 DEG to strip the envelope of the upper surface; and then, after the lower G1 and the lower G2 complete conversion of an upper optical path and a lower optical path by a pneumatic device, the lower surface of the electrical wire is stripped after focusing. The method has the purpose of solving the problems caused by machining and ordinary laserprocessing, and completel