Thimble detection device and detection method

The invention discloses an ejector pin detection device and method, and the device comprises a measurement platform; the fixing mechanism is located on the measuring platform and used for clamping the ejector pin; wherein in the direction away from the measuring platform, the ejector pin is provided with a first end part and a second end part which are oppositely arranged, the second end part is close to the measuring platform relative to the first end part, and the fixing mechanism is used for clamping the second end part; the focusing height measuring mechanism is used for measuring the current distance between the surface of the side, away from the second end, of the first end of the ejector pin and the surface of the side, close to the second end, of the measuring platform on the side close to the first end, and judging whether the position of the ejector pin meets the preset requirement or not based on the current distance. By means of the mode, the positions of the ejector pins and the coplanarity betwe