The working principle of plastic mould for wheels usually includes the following steps:

1. Feeding: plastic raw materials are added into the injection molding machine barrel of the mold.

2. Heating and melting: plastic raw materials are melted into liquid by heating.

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

4. Cooling and setting: The cooling system in the mold makes the plastic cool quickly, thus setting it into the required wheel shape.

5. demoulding: open the mold and take the molded wheel out of the mold.

In this process, the design and manufacture of the mold is very critical, which determines the shape, size and accuracy of the wheel. Mould usually consists of multiple parts, including cavity, core, gate, runner and so on.

The advantages of plastic mould for wheels include:

1. The production efficiency is high, and mass production can be realized.

2. The cost is relatively low.

3. Wheels with complex shapes and high precision can be manufactured.

In actual production, in order to ensure the quality and performance of the wheel, we need to pay attention to the following points:

1. Choose suitable plastic raw materials.

2. Control injection molding process parameters, such as temperature, pressure and time.

3. Maintain and maintain the mould regularly to ensure its normal operation.