How do we calculate injection mold making costs

Injection molding is a manufacturing process used to create plastic parts in large quantities. The process involves melting plastic pellets, injecting them into a mold, and then cooling and solidifying the part. One of the most important factors to consider when manufacturing plastic parts through injection molding is the cost of the injection mold. Usually when thinking of outsourcing injection molding on mainland China , people think of cost reduction.

In this article, we will provide an overview of how to calculate the price of an injection mold.

The cost of an injection mold depends on various factors such as the size and complexity of the mold, the material used for the mold, and the number of cavities required for the part. Here are some of the factors that influence the cost of an injection mold:

  1. Part design: The design of the part plays a significant role in determining the cost of the mold. A more complex part design requires a more complicated mold, which will increase the cost of the mold.
  2. Mold material: Injection molds can be made of various materials such as steel, aluminum, and beryllium-copper alloy. The choice of material will depend on the expected production volume and the desired life of the mold. Steel molds are more durable and can produce a higher number of parts before needing replacement, but they are also more expensive.
  3. Mold size: The size of the mold will determine the amount of material required to create the mold, which will affect the cost.
  4. Number of cavities: The number of cavities in the mold will determine how many parts can be produced in each cycle. The more cavities there are, the higher the initial cost of the mold.
  5. Tooling features: Additional tooling features such as slides, lifters, and inserts will increase the cost of the mold.

To calculate the cost of an injection mold, the following steps can be followed:

  1. Determine the part design and the material required for the mold.
  2. Calculate the mold size based on the part size and add any necessary tooling features.
  3. Determine the number of cavities required for the part and adjust the mold size accordingly.
  4. Calculate the material cost for the mold based on the chosen material.
  5. Calculate the manufacturing cost, which includes the cost of design, machining, and assembly.
  6. Add any additional costs such as shipping, taxes, and customs fees.

In conclusion, calculating the cost of an injection mold can be a complex process that depends on several factors.

It is essential to consider all the factors mentioned above to ensure that the mold is cost-effective and meets the desired production volume and lifespan. By following the steps outlined above, you can estimate the cost of an injection mold and make an informed decision when choosing a mold manufacturer.