System for removably mounting modules in an injection molding press

In an injection molding press attached on opposed inside surfaces to a static and ejector frame, each frame supporting a mold assembly, the improvement comprising:

• (a) on the static frame side, a static cavity mold housing containing on a front face a channel for receipt of a liquid polymer, the channel leading to a cavity for forming a portion of a plastic element, a back side of the static cavity mold housing removably attached to a back plate to form a static mold assembly;
• (b) on the ejector frame side, an ejector cavity mold housing containing on a front face a channel for receipt of a liquid polymer, the channel leading to a cavity for forming a portion of a plastic element, a back side of the ejector cavity mold housing removably attached to an ejector back plate assembly to form an ejector mold assembly;
• and
• (c) the static cavity mold housing and ejector cavity mold housing adapted to be removed from the back plate and ejector back plate assembly, respectively and replaced with a substitute cavity mold housing of the same geometric configuration without change of any other component.

A system for manufacturing plastic components in an injection molding press having attached on opposed inside surfaces of the molding press a static frame and an ejector frame, the static frame attached to a static mold assembly and the ejector frame attached to an ejector mold assembly, the system further comprising:

• (a) in the static assembly, a static mold containing on a front face a channel for receipt of a liquid polymer, the channel leading to a cavity for forming a portion of the plastic component, a back side of the static cavity mold housing removably attached to a back plate to form the static assembly;
• (b) in the ejector frame assembly, an ejector cavity mold housing containing on a front face a channel for receipt of a liquid polymer, the channel leading to a cavity for forming a portion of a plastic element, a back side of the ejector cavity mold housing removably attached to an ejector back plate assembly to form a ejector mold assembly;
• and
• (c) the static cavity mold housing and ejector cavity mold housing adapted to be removed from the back plate and ejector back plate assembly, respectively and replaced with a cavity mold housing for a different plastic component.