the features of three-plate mold
as for three-plate mold, it has the following features: […]
marking, symbols, and characters on a plastic part
there are three structures for marking, symbols, and characters on a plastic part, they are protrusion, depression, and a boss on a depression.
how to design a marking on a plastic part
but how to design a marking on a plastic part, the key is that the making should be in parallel to the ejection direction. and the draft must assure the wrinkle design on the side of the plastic part can be properly ejected.
design a right plastic part
nowadays, more and more plastic part come into our daily live, and you can find some of plastic parts may exist markings of protrusion, depressions, or leather-like wrinkles. […]
residual force may linger in the plastics around the insert
residual force may linger in the plastics around the insert. The amount depends on the plastic material type, insert material, insert structure, […]
the location of the insert inside the mold
the location of the insert inside the mold must be accurate and secure, to avoid disorientation or deformation during injection molding. […]
the expansion coeficient of the material
the expansion coefficient of the materials for insert and the plastic part should be as similar as possible. It should assure that the insert does not rotate or pop out, when it is under load.
the material of insert
usually most inserts are made of metal, but other materials may also be used. of course, a insert in a plastic part still has other purposes, Some are used for electricity reasons, while others are used to improve the stability of it's shape and dimensional precision.
a metal part inserts into a plastic part
when a metal part permanently inserts into a plastic part , we call it as insert, inserts in a plastic part have various purposes. Some are used to enhance local strength, hardness, or wear of a plastic part.
two screws are located along the same axis on a plastic part
there is a case we usually meet, do you know it? Yes! a plastic part has two screws located along the same axis, the pitch and tightening direction should be the same, it simples mold structure design and the part production.