Resin flow and warpage analysis in advance is becoming indispensable for the mass production of resin products.
However, the results obtained from the analysis are not always what we expect.
Prioritizing filling balance may result in large deformation, prioritizing warpage deformation may result in exceeding the capacity of the molding machine, and so on.
What should be prioritized in molding? The key to utilizing the results of flow analysis is to consider them well in advance.
As an example of the use of the results, the following case of nickel-metal hydride batteries for automotive use is introduced.
Several gate arrangements are considered during analysis, taking into account mold cost and filling balance
Although the filling balance is good in MODEL 1 and 2, the amount of warp deformation at point B did not meet the target value. In a normal analytical study, the analysis would end here, but we wanted to achieve the target deformation amount at any cost.
Therefore, we reexamined the gate arrangement to suppress the deformation at point B.
The gate arrangement of MODEL-3 showed that the deformation at point B was within the target value. However, the filling balance was somewhat poor.
Considering the capacity of the molding machine, it was determined that there would be no problem even in mass production, and the mold was started with the MODEL-3 gate layout.
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