Injection Molding Mold Making
You are here: Home » Products » Injection Molding Services » Injection Molding Mold Making
Share to:

Injection Molding Mold Making

Pre-hardened steel, aluminum, or copper injection molding mold are commonly used for plastic injection. These are more durable than hardened steel and are generally preferred due to their wear resistance and longevity. However, hardened steel injection mold is more durable and can last for a long time. It is also more cost-effective to use.
Availability:

Injection Molding Mold Making - TEAM MFG


Pre-hardened steel, aluminum, or copper injection molding mold are commonly used for plastic injection. These are more durable than hardened steel and are generally preferred due to their wear resistance and longevity. However, hardened steel injection mold is more durable and can last for a long time. It is also more cost-effective to use.



Many steel molds are designed to handle millions of parts. However, for low volumes, a pre-hardened steel mold is a better choice. Although aluminum can cost significantly less than steel, it is usually not suitable for high-volume production. This is because it has a narrow dimensional tolerance. Nevertheless, aluminum injection mold can produce thousands of parts at low cost. They can be done through the use of computer numerical control machines. Heat-resistant copper alloy inserts are also commonly used in these components to reduce cycle time and improve the appearance of the injection molded part.



How to Made Plastic Injection Molding Molds?

Molds are constructed through three main methods: standard machining, electrical discharge machining(EDM) and mold design.



CNC Machining

CNC machining involves the use of various tools and equipment such as lathes, milling machines, and drill presses. Since it uses manual work, it requires special skills and equipment to produce complex and accurate mold designs. Modern technology has allowed us to create more complex and accurate mold designs through the use of CNC machines. Modern CNC machines can produce complex and accurately design and build injection molds. They use computer-aided design software to generate and implement manufacturing instructions. Post processor software takes the printed instructions and converts them into the exact commands needed to create the mold.



Electrical Discharge Machining

This process involves using an electrode made of copper or graphite to obtain a desired shape. It is then mounted on a machine and is submerged in a dielectric fluid. After the electrode has been lowered to the working part, it is ignited by a controlled electrical source to scatter the metal in the opposite direction. This method is slower compared to conventional CNC machining, which can produce very fine and complex shapes. The electrode never touches the discharge. Since it does not contact the mold, the process is typically slower. However, it can still produce desirable results. Another advantage of the EDM process is that it allows pre-hardened molds to be shaped and eliminates the need for additional heat-treating. Sometimes, the result is a fine finish that doesn't require polishing the mold cavity.



Mold Design

The cavity and ejector halves of a plastic injection mold are typically connected to each other. Plastic resin from the molding machine enters through a “sprue” or “gate” on the A half. A sprue bushing is then used to secure the resin to the injection barrel.The resin is then directed through the channels that are made in the A and B halves of the mold. The molten plastic then enters the cavity. A mold is usually designed to keep a part on its B half when it opens. The part is then ejected from the B half and drawn out of the A half. One plastic injection mold can have multiple cavities for high-volume molded parts.



Are you looking for injection molding molds making in China? Contact TEAM MFG today to request a free quote now!


Previous: 
Next: