Forming die of cover

The utility model provides a forming mould of a cover, which comprises a panel, a stripper plate, an upper movable mould, a mould core, a lower fixed mould and a bottom plate from top to bottom, the mould core comprises an upper mould core, a middle mould core and a lower mould core, a plurality of first forming grooves are arranged at the bottom of the upper mould core, second forming grooves are arranged in the first forming grooves, and a plurality of forming columns are arranged on the lower mould core. A plurality of guide holes are formed in the middle mold core, the forming column slidably penetrates through the guide holes, a third forming groove is formed in the side face, close to the upper end face, of the forming column in a surrounding mode, a forming protruding block is arranged on the upper end face of the forming column, receding grooves are formed in the two sides of the forming protruding block in the length direction, and the forming column and the first forming groove form a forming cavity