Abstract: A injection mold was designed which could mold three different shutter parts in one injection run. An inclined pillar slide block core-pulling mechanizm, inserted and core and cavity structure, and a side flow gate were employed. Practice use showed that the mold was reasonably designed, and worked smoothly and reliably. Using this mold, the manufacture cost was reduced, the quality of the product was guaranteed.

Key words: inclined pillar, shutter, different shape part, injection mould, loose core