Gluing tool capable of automatically adjusting thickness of glue layer

The invention discloses a gluing tool capable of automatically adjusting the thickness of a glue layer, solves the problem that an existing gluing device is uneven in gluing on rough surfaces which are complex, special-shaped and uneven in height, and belongs to the field of automatic glue scraping and gluing. The gluing device comprises a gluing supporting arm, a pose adjusting mechanism and a gluing device body. The two ends of the gluing supporting arm are connected with the industrial robot and the posture adjusting mechanism correspondingly, and the posture adjusting mechanism comprises a horizontal direction self-adaptive adjusting device, a vertical direction self-adaptive adjusting device, a gluing device mounting base and veneering wheels; the veneering wheel and the gluing device are mounted at the bottom of the gluing device mounting base; when the veneering wheel and the gluing device move on a complex special-shaped rough surface and an uneven rough surface, the horizontal direction self-adaptive