Tray seedling conveying, positioning and launching device for pot seedling transplanting machine

The invention provides a tray seedling conveying, positioning and launching device for a pot seedling transplanting machine. The device can simultaneously convey, position, take and launch seedlings for two trays and is small in occupied space, simple in structure, low in manufacturing cost, easy to maintain and accurate in positioning and launching. The distance between the seedlings is adjusted by the aid of a seedling guide barrel, two seedling taking claws simultaneously work, so that seedling taking efficiency is high, the seedlings can be accurately launched by the aid of an independent opening and closing mechanism, an image recognition system can recognize good seedlings and bad seedlings, and the bad seedlings can be removed when discovered.