Seedling bed building machine

The utility model relates to a seedling bed building machine, and belongs to the technical field of seedling beds, the seedling bed building machine is simple in overall structure, convenient to mount and use, convenient for workers to take cultivated seedling trays, capable of improving the cultivation efficiency and good in overall practicability, and a greenhouse seedling bed frame comprises two bases; the two supporting plates are fixedly welded to the two bases correspondingly, and a plurality of T-shaped sliding grooves are formed in the supporting plates; t-shaped blocks which are in sliding connection with the T-shaped sliding grooves are fixedly mounted at the two ends of the placement bin; the limiting assemblies are arranged on the supporting plate and used for limiting the T-shaped block, each limiting assembly comprises two limiting plates, the two limiting plates are fixedly installed on the supporting plate, limiting grooves are formed in the limiting plates, limiting sleeves are fixedly instal