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What parts of the injection mold are composed of

An injection mold typically consists of the following parts:

1. Cavity and Core: The cavity is the female part of the mold, while the core is the male part. Together, they form the shape of the plastic part.

2. Runner System: This includes the sprue, runner, and gate. The sprue is the channel through which molten plastic enters the mold. The runner distributes the plastic to the gates, which are the openings through which the plastic enters the cavity.

3. Ejector System: This consists of ejector pins or plates that push the molded part out of the cavity after it has cooled.

4. Guides and Bushings: These ensure that the moving parts of the mold (such as the core and ejector pins) move smoothly and accurately.

5. Cooling System: This is used to control the temperature of the mold and ensure that the plastic part cools evenly. It typically consists of cooling channels or water lines.

6. Support Plates and Pillars: These provide support and rigidity to the mold.

7. Mold Base: The mold base is the framework that holds all the other parts of the mold together.

These are the basic components of an injection mold, but the specific design and configuration will depend on the requirements of the particular part being molded.