Ejector pin device for chip packaging

The invention discloses an ejector pin device for chip packaging. The ejector pin device comprises a needle cylinder, a base and an ejector pin seat module, the needle cylinder sleeves the ejector pinseat module, and the base is positioned below the ejector pin seat module and is used for fixing the ejector pin seat module; the ejector pin seat module comprises a knob unit and a supporting unit,a detachable ejector pin is arranged at the top of the supporting unit, the knob unit is arranged on the outer side of the supporting unit in a sleeving mode, the knob unit is rotated, and the supporting unit vertically moves up and down; and the upper surface of the needle cylinder is provided with a vacuum hole and an ejector pin hole corresponding to the ejector pin. By adjusting the knob units, the knob units can act on the corresponding supporting units, so that the requirements for the number and positions of the ejector pins required by different products are met, metal foreign matter is reduced, and the product