I have a tip for designing a tilted lifter mechanism, to endow the mechanism with restoration function, the length of circular bead for restoration should be adopted preferably larger under possible conditions, and the four corners of the side slide should be made into circular angles which are easy for mill processing. Such design shall ensure the steady and reliable restoration of the mechanism and meanwhile can also enlarge the space for processing. When slide friction between the tilted lifter and the retainer plate of the ejector plate occurs, harden quenching should be applied to the head of the mandril and the insert of the roof plate to increase abrasion resistance.