At a time when the plastic products processing industry is booming, Standard Ejector Pins, as core components of injection molds, are increasingly valued by the industry because of their important role in improving production efficiency and product quality. This type of cylindrical metal ejector pin is mainly responsible for the key task of demolding the finished product - at the moment of mold opening, the cooled and solidified plastic parts are smoothly ejected from the cavity according to the preset trajectory, fundamentally avoiding deformation or scratches caused by manual removal.
The significant advantage of Standard Ejector Pins lies first in its high compatibility. The ejector pins manufactured according to international general specifications have a unified size standard (common diameter Ф2mm~Ф20mm), which can be adapted to most injection molding machines and mold structures, greatly reducing the cost of equipment maintenance and parts replacement. Secondly, the ejector pin is made of high-quality alloy steel such as SKD61 and SKH51. After vacuum quenching and precision grinding, the surface hardness can reach HRC50-58. With special nitriding treatment, it can still maintain high strength, wear resistance and corrosion resistance in high temperature and high pressure cycle operation, and the average service life can exceed one million times.
In terms of structural design, the ejector head mostly uses a flat or spherical end with a stepped rod body to ensure uniform ejection force; at the same time, the rod body surface is polished with high precision to Ra≤0.2μm, which significantly reduces the friction loss with the template. This type of standardized component also has the characteristics of rapid replacement. Through the coordination with the reset rod and the guide mechanism, the mold can be automated and efficiently operated, which is especially suitable for mass production scenarios such as automotive parts, electronic housings, and daily necessities.
Industry experts pointed out that with the continuous improvement of precision injection molding technology requirements, the standardized application of Standard Ejector Pins has become a basic element to ensure product dimensional accuracy and surface finish. Its modularity, durability and high interchangeability provide important technical support for manufacturing companies to optimize production processes and reduce downtime costs. In the future, it will continue to drive the injection molding industry towards intelligence and standardization.
