Plastic machine usually refers to plastic injection molding machine, and its working principle is as follows:

1. Feeding: plastic particles or powder are added into the hopper.

2. Heating and melting: the plastic is melted into a liquid state by a heating device.

3. Injection molding: under the action of high pressure, molten plastic is injected into the mold cavity.

4. Cooling and setting: the plastic is quickly cooled and set by using the cooling system of the mold.

5. Mold opening: Open the mold and take out the molded plastic products.

The characteristics of its working principle include:

1. Precise control: It can accurately control various parameters of the injection molding process.

2. Efficient production: realize efficient continuous production.

3. Wide applicability: it can process many different types of plastics.

In practical application, we should pay attention to the following points:

1. Selection of raw materials: Select suitable plastic raw materials according to product requirements.

2. Mold design: Reasonable mold design is very important for product quality and production efficiency.

3. Temperature control: strictly control the temperature during heating and cooling.

4. Pressure adjustment: ensure the pressure stability during injection molding.