The utility model discloses a can mould plastics and take plastic part's of arc hole mould, including front mould, back mould, before the front mould includes preceding template and connects gradually the template take off flitch, preceding framed, preceding framed built -in two the first sliders that have, one side in opposite directions of two first sliders is equipped with plastic part's forming groove respectively, taking off of back mould template including the back template with after connecting gradually expects that the mechanism is framed with the back, taking off material mechanism and including hydro -cylinder, pivot, the hydro -cylinder matches through rack and driven gear and drives the pivot and rotate, links firmly a drive gear in the pivot and takes matching from the motion block of arc tooth with one, sets firmly a stopper on the back is framed, and an arc mold core passes the stopper, and the one end of arc mold core is at two between the forming groove, the other end links firmly from the motion block, two first slider one side still can be equipped with and be taken the bellied second slider of shaping, the utility model discloses an automation is moulded plastics, the automatic drawing of patterns, has improved production efficiency, has reduced manufacturing cost.