The utility model relates to a
seedling planting device and a small-sized automatic
seedling planting
machine. The
seedling planting device comprises a planting dispenser, and the planting dispenser is arranged on a moving mechanism; a connecting transverse plate is arranged on the moving mechanism, and a planting mounting seat is arranged at the end part of the connecting transverse plate; the planting dispenser comprises a feeding
barrel and an opener; the feeding
barrel is erected on the upper surface of the mounting frame; the mouth opener is arranged below the mounting frame, and the lower end opening of the feeding
barrel is aligned with the upper end opening of the mouth opener; the mouth opener is composed of at least two duckbilled
mouth opening pieces, and the whole mouth opener is in a conical shape. And the mouth opener is connected with the
mouth opening driving mechanism. According to the seedling
transplanting machine, the seedling process of soil
insertion, soil
cutting and seedling placing can be automatically completed, and the seedling
transplanting efficiency is improved; meanwhile, a
ball screw structure can control the
punching depth, and an opening driving mechanism can complete earth
cutting and seedling releasing operation in a unified manner, so that the uniformity of planting quality is ensured, and the
survival rate of plants can be indirectly improved.