Automatic feeding and marking device for sucker rod coupling

The invention provides an automatic feeding and marking device for a sucker rod coupling, and relates to the field of automatic feeding and marking mechanisms. The device is mainly composed of a stacking device, and the stacking device screens out transverse cylindrical couplings through a two-stage inclined plate connected through an air cylinder, conveys the transverse cylindrical couplings to a conveying belt and stacks the transverse cylindrical couplings at a stacking position in the middle of the conveying belt. And then a conveying positioning device connected with the tail end of the conveying belt conveys the sucker rod couplings stacked at the stacking position to the to-be-marked position of the V-shaped groove in the tail end of the conveying belt. According to the principle of the laser marking device, numerical control operation is carried out on a sliding rail connected with a laser transmitter through a PC end, so that the sliding rail is aligned with a coupling, a needed pattern can be marked