Patent ID: 8287273

Claim:
An apparatus for changing colors of an injection molding hot runner die that has a passage for supplying a melted resin to a molding die, said molding die having first and second cutout portions formed therein, the apparatus comprising: a hot runner block that is provided with first and second hot runners, said first hot runner being exclusively used for a first color and being in communication with a first sprue and a first nozzle, said second hot runner being exclusively used for a second color and being in communication with a second sprue and a second nozzle; a moving means for moving the molding die, which is united with the hot runner block, along with the hot runner block; and a positioning block having a projection, said projection being adapted to engage either of said first and second cutout portions, wherein when said projection engages said first cutout portion, a melted resin injection nozzle is aligned with said first sprue, and wherein when said projection engages said second cutout portion, the melted resin injection nozzle is aligned with said second sprue.