Automatic door shell forming device

The invention discloses an automatic door shell forming device. The automatic door shell forming device comprises a three-axis truss mechanical arm, a suction cup assembly used for sucking and holdinga metal plate is installed at one end of the three-axis truss mechanical arm, a plurality of limiting devices used for limiting the suction cup assembly are installed on the suction cup assembly, anda sweeping device for sweeping scraps on the sucked and held surface of the metal plate is arranged in the suction cup assembly. According to the automatic door shell forming device, through judgmentof an infrared distance sensing device, a telescopic rod stretches out and draws back by the corresponding length, so that the inclined face of a U-shaped inclined block makes contact with the chamfered inclined face of a square block, the limiting effect is achieved, the situation that due to bending of an air pipe or unstable air pressure, the suction cup buffering distance of a local positionof a suction cup buffering c