（Injection molding）is a thermoplastic resin material melted and then injected into the mold cavity and then hardened and cooling & demould to get the products
It can produce high-precision and high-quality products at high suburban rates, and can use various plastic raw materials to process plastic products for different purposes. Therefore, injection molding is one of the important molding methods in plastic product processing.
A) Basic functions of injection molding machine:
Injection parts are realized by plastic injection molding machines. The basic functions of the plastic injection molding machine are: 1. Heating the plastic raw material to make it melt; 2. Applying high pressure to the melt to inject it and fill the mold cavity.
B) Injection molding process/equipment
The injection molding operation of thermoplastics generally consists of plasticizing. Fill the mold. Composed of compaction and cooling. The equipment used is a plastic injection machine. It consists of injection molds and auxiliary equipment (such as material drying, etc.)
C) Injection installation:
D) Plasticizing is mainly realized in the process of plastic injection molding machine. calculation and measurement. Functions such as injection and compression packing. The screw injection device is the most used, it is made by unifying the screw plasticizing and the injection plunger into one screw. In essence, it should be called a coaxial reciprocating rod injection device. When it is working, the plastic in the hopper falls into the heating barrel by its own weight. Through the rotation of the screw, the plastic moves forward along the screw groove. At this time, the material is heated by the external heater of the heating barrel, and there are shears inside. The heat generated by cutting, the temperature rises and becomes a molten state. With the storage of the material at the front end of the heating barrel, the reaction force (back pressure) generated by these materials pushes the screw backward, and the limit switch is used to limit the amount of its retreat. When it retreats to a certain position, the screw stops rotating, which determines (Metering) The amount of injection at one time.
