Automatic seedling taking and separation system for substrate block seedlings

An automatic seedling taking and separation system for substrate block seedlings, comprising a seedling taking device, a seedling delivery device, and a seedling separation device,

• wherein the seedling taking device comprises a seedling tray, a first push plate, and a first push rod;
• the seedling tray is fixed on a stand;
• the first push plate is located above the seedling tray;
• the first push rod is arranged at one end of the seedling tray;
• the first push plate is driven by the first push rod to move in a stepped and reciprocating manner along the seedling tray;
• the seedling delivery device comprises a seedling carrier, a first lead-screw nut mechanism, a second lead-screw nut mechanism, a first scraper blade, and a second scraper blade;
• both the first lead-screw nut mechanism and the second lead-screw nut mechanism are located above the seedling carrier;
• the first scraper blade and the second scraper blade are separately driven by the first lead-screw nut mechanism and the second lead-screw nut mechanism to move in a reciprocating manner;
• a travel of the first scraper blade is from a center of the seedling carrier to one end of the seedling carrier;
• a travel of the second scraper blade is from the center of the seedling carrier to the other end of the seedling carrier;
• the seedling separation device comprises a first conveyor belt adapted to an end portion of the seedling carrier, a second conveyor belt parallel to the first conveyor belt, and a plurally of third conveyor belts cooperating with the second conveyor belt;
• the third conveyor belts are perpendicular to the second conveyor belt;
• the first conveyor belt and the third conveyor belts are separately arranged on two sides of the second conveyor belt;
• a single-seedling separation mechanism is arranged at one end, of the first conveyor belt;
• the single-seedling separation mechanism is configured for pushing the substrate block seedling located at an end portion of the seedling carrier onto the second conveyor belt;
• the second conveyor belt intermittently moves to convey the substrate block seedlings to seedling inlets of the third conveyor belts;
• a second push plate is arranged on one side, of the second conveyor belt;
• the second push plate is driven by a second push rod;
• the third conveyor belts are inclined;
• the single-seedling separation mechanism is a crank and rocker mechanism composed of a crank, a connecting rod, and a rocker;
• a hinge point between the connecting rod and the rocker is located in the middle of the connecting rod;
• a third push plate is arranged at one end of the connecting rod;
• and the single-seedling separation mechanism has a seedling pushing working state in which the third push plate does a linear motion and a return working state in which the third push plate does a parabolic motion.