A three plate mold has 2 parting lines and three opening type runner opening, runner stripper plate opening, and product opening. One parting line use to remove a runner and one parting line use to remove product. It has three main groups: runner stripper plate, fixed side(cavity plate), and movable side(core plate).
Plastic molding
Plastic injection molding process steps
There are 6 steps in plastics injection molding process steps as preparation, setup, mold closing, injection, cooling, mold opening and remove product. I will explain these process in this post.
ejector system in injection molding
Ejector system in injection molding use to push the final samples out of the mold. They are used forcefully to eject the solid part out of the mold and are usually made of high-quality steel.
plastics injection molding parting line
In plastics injection molding, parting line is the dividing line on sample that separate cavity and core. Product will change draft angle direction at parting line. Flash trouble always appear at parting line. Sometimes, to improve flash we will make step at parting line. For this changing, you have to meet designer because components use […]
Plastics injection molding sleeve ejector system
In plastics injection molding, sleeve ejector system usually use to create boss of product. Boss of product usually use to assemble two parts so it need good dimension, tolerance, appearance. If we don’t use sleeve ejector pin, product may be scratch, cracked, sink mark at boss or hole location.
plastic injection molding runner system
Runner system connects the sprue via the gate with the cavity. It has to distribute molten plastics in the same condition, pressure and time for all cavities.