Production line connecting device and plate glass production system

The utility model discloses a production line connecting device and a plate glass production system. The production line connecting device comprises a switching conveying line, and the input end of the switching conveying line is used for being connected with a cold end production line; the output end of the switching conveying line is used for being connected with a deep processing production line and a cold-end sheet storage line, and the cold-end sheet storage line is used for carrying out sheet storage treatment on plate glass subjected to cold-end processing; and a switching device is arranged on the switching conveying line and is used for adjusting and conveying the plate glass on the switching conveying line to the deep processing production line or the cold end sheet storage line. According to the utility model, the processing speed between the cold end production line and the deep processing production line is effectively coordinated, and the loss and production hidden danger caused by blockage of t