Mold Design Considerations and Tooling

 

Accurate mold design is essential for ensuring quality in manufacturing plastic parts. However, designing and manufacturing a mold itself requires a lot of considerations and precision. Whether it’s about designing mold and its various components, called tooling, or selecting the best material, everything must be done carefully with high precision.

Nicety-Mould, a leading mold maker and expert in plastic cap tooling, gives details about essential mold components and tooling.

Base

Mold base has mold core and cavity mounted to it. The base is then fixed to the platens inside the molding machine. The front half of the base has a support plate to attach the mold cavity, sprue bushing, and a locating ring. The rear half has the ejection system that has the mold core, and support plate.

Gates

Openings at the end of the runners to direct the flow of molten plastic into the mold cavity are called gates. Gates vary in shapes and sizes to suit the part design and resin materials. For tooling, design engineers must consider the optimum flow, cooling time, fill pressure, tolerance, etc.

Draft

One of the most important aspects of mold designing is the easy removal of the final part from the mold, without any damage to the surface of the part. It can be achieved by applying a draft angle or taper to the walls of the mold.

Finish

Cooling is critical for determining the perfect surface finish. A smooth surface finish depends on the proper temperature control that’s possible with effective cooling.  

With proper design, molds can also apply a texture or pattern to the mold surface. Various textures can be matte, grains, gloss, logos, graphics, etc. It can be done with the help of draft, during ejection.

Nicety-Mould offers excellent tooling solutions, mold designing, cap tooling, and mold manufacturing to clients across the world.

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