Ejector sleeves are common mold components in mold, DGMF's Ejector Sleeve pins can be used to eject the part or serve as a bushing for the ejector pin. Ejector Sleeves are available in both inch and metric sizes.
The Ejector Sleeve pin is used to holding slides in a mold when the mold design requires a moving core. It helps facilitate accurate and proper movement within the mold. And it is available various, each with their own characteristics and applications.
The function of an ejector sleeve in a mold is to eject either an entire finish molded piece part or apply ejection force to some portion of the molded piece part to assist with part ejection, in combination with other ejection features designed into the mold.

Ejector sleeve pin picture:



There are sleeve pin and core pin in the sleeve ejector system. Ont the one hand, we can’t put ejector pins in that area, when the part has to be precision tolerance, good dimension, good appearance at holes or boss. On the other hand, if we do not use a sleeve ejector system, most of the products can be bend, scratch, crack, the dimension of the hole of products will not good and difficult for several steps processing. Ejector sleeves are very important in injection molding, a good product can not without a high-performance ejector sleeve.

How do ejector sleeves work?
Step 1: After injection machine input molten plastic to mold, sleeve pin and core pin will make the structure of the product immediately.
Step 2: After mold opening, the pin of the injection machine will put to the ejector base plate. The ejector system will move to put products out of the mold. In this process, core pins do not move because it is fixed on mold. The ejector sleeve will move to eject product out of the mold. After that, we got the product.

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