Switching mechanism used in car roof die

The invention discloses a switching mechanism used in a car roof die. The switching mechanism comprises a female die, a base on which a male die is fixed and a mechanism group composed of supporting plates, backing plates and connecting plates, wherein the supporting plates are positioned in the middle of the base; the backing plates are positioned at two sides of the base; the supporting plates and the backing plates are connected into a whole through the connecting plates; operating screws on the base are arranged in the connecting plates; a cylinder is connected to the mechanism group; the male die is equipped with a nitrogen spring assembly positioned at the backing plate; and a guide pillar-guide sleeve assembly is arranged on the base. The switching mechanism has the characteristics that by additionally arranging the switching mechanism in the car roof die, the switching time for production with and without a skylight is greatly shortened, the production efficiency is improved, the human error probabili