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What are Core Pins?

2023-06-09

Core Pins are components of injection molding, which is a process used to manufacture plastic parts. During the process, plastic is injected into a mold and solidified to create a desired shape. The shape of the mold is created by two halves that are held together by a number of core pins. These pins act as support structures and create the pathways within the mold through which the plastic is injected.

Core Pins

Core pins are typically made of hardened steel and are designed to meet the specific requirements of each individual mold. They come in a wide variety of sizes and shapes depending on the complexity of the mold and the shape of the finished product.

The main function of core pins is to provide structural support to the mold during the injection molding process. They also help to create the internal shape of the molded part, giving it its final form. Pins are positioned in such a way as to create channels or voids in the molded part, which can be used for passage of water, air, or electrical components.

The Machining Core Pin must be carefully designed and strategically placed in order to ensure that the molded part is properly formed, with no defects or deformities. The size, shape, and placement of the pins must be accurately calculated to ensure that the molten plastic fills the mold cavity evenly, avoiding uneven cooling and deformities in the finished product.

Core pins are subject to significant amounts of stress and wear during the injection molding process, which can lead to damage or failure over time. For this reason, they are often coated with specialized materials, such as titanium nitride, to increase their hardness, durability, and resistance to wear.

Custom Core Pin

In conclusion, core pins are an essential component of the injection molding process. They provide structural support to the mold and help to create the internal shape of the molded part. Custom Core Pin Careful design, placement, and maintenance of core pins are critical to ensuring that the finished product meets the desired form and quality requirements.

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