Glue-injection machine of special-shaped cover

The utility model discloses a glue-injection machine for an irregularly-shaped cover. The glue-injection machine comprises a machine, a mechanical arm mainly composed of a Y-direction working arm and an X-direction working arm which are arranged on the machine, a glue-injection valve arranged on the mechanical arm, a servo execution system for manipulating the mechanical arm to act correspondingly, and a PLC programmable controller outputting an operation instruction to the servo execution system. The servo execution system responds to a control signal output by the PLC programmable controller, and with the cooperation of a ball screw, the glue-injection valve is caused to act together with the action of the Y-direction working arm and the X-direction working arm in a certain way, the glue injection of the irregularly-shaped cover is not affected by the movement of a can cover or an injection nozzle, and the phenomenon of different glue injection magnitudes as a result of the difference of needle apertures du