1, suction nozzle problem, suction nozzle deformation, blockage, damage caused by insufficient air pressure, air leakage, poor material suction, incorrect material taking, identification failure, feeding.

2. Identification system problems, poor eyesight, unclean eyesight or laser lens, interference from sundries, improper selection of identification light source, insufficient intensity and gray scale, may be that the identification system is broken.

3. Location problem: the material is not in the center of the material, and the height of the material is incorrect (generally, it will be subject to the downward pressure of 0.05MM after touching the part), which leads to deviation, incorrect material retrieval and deviation. If it is inconsistent with the corresponding data parameters, it will be rejected as invalid material by the identification system.