the connected line is characterized by synchronous loading and unloading the flat glass with two specifications (2440*1830 and 3660*2440). During unloading 2440*1830 glass, the glass sheet shall be rotated by 90¡ã rotating table, be positioned by positioning table and be unloaded to glass rack by unloading table. During unloading 3660*2440 glass, the glass sheet shall be directly positioned by positioning table and then be unloaded by unloading table.