Functions of injection mold gate
The gate of an injection mold is a channel that connects the sprue runner or branch runner to the cavity. The cross-section of the channel can be equal to that of the sprue runner, but it is generally smaller than the sprue runner. The shape and size of the gate have a great influence on the quality of the product. So, what are the functions of the gate?
The functions of the injection mold gate are as follows:
1. Control the flow rate of the molten material.
2. Prevent the molten material from early solidification and backflow.
3. Make it easy to separate the product from the cavity. The design of the shape, size, and position of the gate depends on the properties of plastic, the size, and the structure of the product. Generally, the interface shape of the gate is circular or rectangular, the cross-section should be small and the length should be short. The gate of an injection mold is generally located in a place where the product is thicker and does not affect the appearance.
