The Characteristics And Eight Categories Of Injection Molds Must Be Kept in Mind

The characteristics and eight categories of injection molds must be kept in mind

1. Injection mold

Injection mold refers to the high-pressure injection of heat-melted plastic into the mold cavity by an injection molding machine. After cooling and solidification, a molded product is obtained. It is a tool for producing plastic products; it is also a tool for giving plastic products a complete structure and precise dimensions. It is also a mold used in injection molding for mass production of some complex-shaped parts. Injection molds are divided into thermosetting plastic molds and thermoplastic plastic molds according to the molding characteristics; according to the molding process, they are divided into transfer molds, blow molds, casting molds, thermoforming molds, hot press molds (compression molds), injection molds, etc. Among them, the hot press mold can be divided into three types: overflow type, semi-overflow type, and non-overflow type. The injection mold can be divided into two types: cold runner mold and hot runner mold by the gating system; according to the loading and unloading method It can be divided into two types: mobile type and fixed type. Although the structure of the mold may vary widely due to the variety and performance of plastics, the shape and structure of plastic products, and the type of injection machine, the basic structure is the same. The mold is mainly composed of a pouring system, a temperature control system, forming parts and structural parts. Among them, the pouring system and molded parts are the parts that are in direct contact with the plastic and change with the plastic and the product. They are the most complex and the most varied parts in the plastic mold that require the highest processing finish and precision. The injection mold is composed of a movable mold and a fixed mold. The movable mold is installed on the movable template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form a pouring system and a cavity. When the mold is opened, the movable mold and the fixed mold are separated to take out the plastic products.