Nitrogen spring workpiece ejection mechanism used in pressure machining process

A nitrogen spring workpiece ejection mechanism used in the pressure machining process comprises a nitrogen spring, a base, a guide column, a guide sleeve, rigid ejection blocks and a clamping plate. The base supports the nitrogen spring, the guide column is fixed to the lifting end of the nitrogen spring, the guide sleeve is arranged on the guide column in a sleeving mode, the rigid ejection blocks eject a workpiece, and the clamping plate restrains the guide sleeve in an insertion block. The base is a groove type component which comprises a nitrogen spring and guide column lower end stretching cavity, and a flange which is connected with the lower end face of a mold in a butt joint mode is arranged at the upper end of the base. The guide column is a cylindrical component with an upper bottom, sleeves the nitrogen spring and is locked at the upper end of the nitrogen spring in an attached mode through a screw. The guide sleeve is a cylindrical component with a through hole, sleeves theguide column in a movabl