Toughened glass conveying line with front-back transmission connection structure

The utility model discloses a toughened glass conveying line with a front-back transmission connection structure, which is characterized in that an inner side groove, a middle groove and an outer side groove are arranged on the outer side surface of a transmission wheel, and the inner side groove, the middle groove and the outer side groove are all annular grooves; the transmission wheel is downwards in transmission connection with the transmission mechanism through a belt sleeved on the outer side groove, and is in transmission connection with the middle groove of another adjacent transmission wheel in front through another belt sleeved on the middle groove; the transmission wheels are further in transmission connection with the inner side groove of the third adjacent transmission wheel on the rear portion through a third belt arranged in the inner side groove in a sleeving mode. By means of the transmission connection mode, the rotating speeds of the conveying rollers which are sequentially arranged front a