How to locate the mold gate in a suitable position?
In the mold design stage, we should choose the right position of the mold gate by the actual needs of the product. generally, the factors that affect the position of the gate are:
Product appearance
Product function
Mold manufacturing
Product deformation
At the same time, the gate location will also have a certain impact on the injection molding process, such as:
Holding pressure. When designing the mold, keep the gate away from the mechanical part of the product to avoid internal stress. It is also not approved to place the gate in a position where the structural strength of the product is weak, otherwise, you will meet product deformation.
The gate position determines the flow rate of the melted plastic and indirectly determines the injection pressure and the clamping force required by mass production.
The factor that needs to be considered in the selection of the gate position and size are:
Gate location
The melted plastic injected into the cavity through the gate should be as even as possible.
The location of the gate needs to combine with the mold design.
The possible bubbles, insufficient injection, etc. should be considered to ensure product quality.
Gate size:
The fluidity of the material.
Wall thickness of the plastic parts
The amount of the melted plastic in each cavity.
Dissolution temperature
Mold temperature
In summary, the gate design is directly related to the product size, mold structure, and injection conditions. Before mold design, it is necessary to fully consider the physical properties of the raw materials and product structure, and set the mold at the appropriate location to ensure the reliability of molds and products.
