The mold now opens. The ejector pins push out the part, and it is removed. The mold is ready to cycle again. T he design of a mold is one of the most important factors in molding good parts. A poorly designed mold will have difficulty producing consistently good parts in any molding machine.
Injection molds have a significant influence on molded part properties, such as stress and warpage.
This means that the plastic flow to each part in the mold should be exactly the same. This helps to hold consistency in parts made on the same shot. Uniform water cooling of the mold. The core and cavity should be cooled, not just the mold plates. Make sure that the mold does not bend or deflect when plastic is injected into the mold.