n: The minimum cavity mold
L: number of products in a product lot
K: coefficient due to defective products (%)
k: failure rates (depending on the company) (%)
tc: cycle time injection molding of a product (s)
tm: time required to complete the first batch of products (day)
I can consider to choose the suitable cavity through the following information:
+ the size of the injection molding machine (largest capacity and clamping force injection biggest).
+ delivery time.
+ Ask about product quality.
+ the structure and size of the mold.
+ the cost of the mold.
usually, we can calculate the number of hearts molds needed on site by relying on: the number of products, productivity and yield plasticizer injection of injection molding machine, mold clamping force of the machine.
đang được dịch, vui lòng đợi..
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