Film tearing mechanism for light guide film of keyboard backlight module

A light guide film tearing mechanism of a keyboard backlight module comprises a rack, and a discharging wheel, an upper film separating mechanism, an upper film collecting wheel, a lower film separating mechanism and a lower film collecting wheel are arranged on the rack. A light guide film material belt is wound on the discharging wheel, and protective films are attached to the front face and the back face of the light guide film material belt respectively. The upper film separation mechanism is provided with a supporting platform fixed on the front side of the rack; an upper film release knife located above the supporting platform is further arranged; a first guide roller located on the left side of the supporting platform is further arranged; the upper film collecting wheel is rotationally matched with the front side of the rack and is arranged above the upper film separating mechanism; the lower film separation mechanism is provided with a sliding table located on the right side of the supporting platform