What is the ejector block in plastic injection mold?

Ejector Block

1) Direct ejection can be in 2 styles: ejector and ejecting block + ejector pin.

2) The ejector is designed with gradients on its four sides: 1°on the side  that clings to the product and 3° on the other three sides.

3) When the core of plastic injection mold is integrated, the distance between the ejector and the parting surface is 0.3 – 0.5; When the core is inserted, the ejector clings to the insert. See the diagram:

ejector block design

4) The ejector is fixed with the T-base and socket head cap screws. Its matching relationship with the core is shown in the diagram:

ejector block fixation

5) When the ejecting block + ejector pin structure is applied, the positional relationship is shown in the diagram. The ejecting block is designed with gradients on its four sides: 1° on the side close to the parting surface and 3° on the other three sides.

ejector block +ejector