The Importance of Design Engineering in Plastic Injection Molding

one of PTMS’ many plastic injection molded parts

You should have a solid design in place if you’re looking to manufacture a plastic part. After this, you can build an injection mold to meet the product specifications.

In this process, the design engineer plays a crucial role. They evaluate the part design and make recommendations and modifications based on certain product requirements, including the function and usage of the product. Here’s what the engineer will need to know:

§   Does the part need to withstand chemicals, pressure, and elements?

§   What are the tensile and dimensional requirements?

§    How will the part be used? Is it a component of a bigger assembly or a standalone product?

This criterion is kept in mind while building a plastic injection mold design. Depending on the type of resin and the part design, gate placement, vents, and mold cavities will vary. Taking these manufacturing factors into consideration, this task is difficult and needs a strong knowledge base – both of the injection molding process and mold design.

What happens if you skip design engineering?

If you don’t take advantage of the skills and expertise of design engineers in creating an injection molded part, you may expect the following outcomes:

§  Weak-fitting parts
§  Slow production due to extra finishing and molding steps
§  Poorly performing products
§  High mold tooling costs

one of PTMS’ many plastic injection molded parts

Designing molds

Although there are a ton of components and parts you can design, each will need a mold to create so that it can be created with injection molding techniques. Generally, machining a complex mold is expensive. To accomplish this goal without high costs, a design engineer can help you by simplifying the design.

Selecting a plastic resin

Choosing the right plastic resin for your product can dramatically affect various aspects of your production, including durability, resistance, flexibility, product appearance, tooling costs, production speed, and material costs. More factors may play a role in resin selection, including additives like anti-bacterial, plasticizers, and color.

Part design and prototyping

To ensure you get the best results, design engineers can help ask the right questions about your product or part. They can help you determine the shape of your part, areas where flexibility or strength are needed, how it can fit with other parts, etc. Lastly, design engineers can ensure your part is moldable with injection molding techniques. If not, they can modify the part’s design and produce a prototype to test this design.

PTMS offer all kinds of top-quality plastic injection molded parts

PTMS is a professional plastic injection mold maker in China, offering valuable project solutions to worldwide customers.

Give them a call now for more information on their plastic injection molding price!

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