The water channel is an important part of the plastic mold. The design of the water channel affects the molding and appearance quality of the product. If the water channel is not designed well, it will cause scale to form during long-term processing, making the injection molding machine oil temperature too high, the system pressure unstable, and unable to form a good water circulation, causing the processing to be suspended. Therefore, certain principles must be followed in the design of the water channel.

Plastic mold

1. Under the condition that the heat transfer area required for cooling and the mold structure allow, the number of cooling circuits should be set as many points as possible, and the cooling water port aperture should also be designed to be larger.

2. When the thickness of the part is basically uniform, the distance between the cooling water channel and the surface of the part is preferably equal. When the thickness is uneven, the cooling should be strengthened in the thick part, and the layout of the cooling water channel must be reasonable.

3. The temperature near the gate is generally the highest, and the cooling speed of the runner is also the slowest. Therefore, the cooling water should start from the gate.

4. The layout of the cooling water channel needs to be determined according to the shape and structure of the part, the characteristics of the raw materials and the requirements of the mold temperature.

5. When the size and shape of the workpiece and the mold core are small, the water channel can be designed as a direct current type, and a good cooling effect can be achieved when the template passes through.

6. When the workpiece is arched and relatively high, the distance between the water channel and the workpiece will be relatively wide, and a water baffle can be used to achieve good cooling.

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