Design and experiment of the picking component of eggplant bowl seedling transplanter
In order to solve the problems such as low seedling picking rate and easily broken substrate of the current vegetable seedling transplanter,a kind of stem-clamping seedling picking mechanism was designed.The seedling picking mechanism was mainly composed of Delta robot,spacing mechanism and seedling picking clips.The results showed that the pulling load increased with the increase of pulling speed,and the stem extrusion strength decreased with the increase of distance from the root by electronic universal testing machine for eggplant seedling.The movement of the seedling picking mechanism was simulated by ADAMS software,and the displacement,velocity and acceleration curves of the moving platform were obtained.The velocity was stable without sudden change,and both the velocity and acceleration met the specified values of the parallel robot.The results of seeding tested showed that with the increase of seedling picking speed,the number of eggplant pot seedlings with missing clips,multiple clips and stem damage gradually increased.And,the success rate of taking seedlings was the highest up to 96.1％when the rate of seedling extraction was 80 plants/min.In order to improve the seedling picking rate and ensure the success rate of seedling picking,the selected seedling picking speed was 96 plants/min,and the success rate of seedling picking was 93.8％.The research results can provide reference for the research of automatic seedling picking mechanism.
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