Glue injection robot for gap between curtain walls

The invention discloses a glue injection robot for a gap between curtain walls. The glue injection robot comprises a rack and crawler belt assemblies connected to the two sides of the rack; each crawler belt assembly comprises a crawler belt and a driving device used for driving the crawler belt to rotate; and a plurality of suction cup assemblies are successively arranged on the face that the crawler belt is in contact with a curtain wall. A trigger rail matching with the suction cup assembly is arranged on the rack, and when the suction cup assembly moves into the trigger rail, the suction cup assembly can be adsorbed or separated from the curtain wall; a multi-axis moving platform is arranged in the middle of the rack; and a glue injection device and a protection device are arranged on the multi-axis moving platform. According to the glue injection robot, manual gluing operation for the curtain wall is replaced, so that the danger of high-altitude operation is avoided, the efficiency of the gluing operatio