Feeding conveying line of filling machine

The invention discloses a feeding conveying line of a filling machine. The feeding conveying line comprises a conveying device, a recycling device and a lifting device. The recycling device is arranged below the conveying device, and the lifting device is arranged on one side of the recycling device and clings to the recycling device. The conveying device comprises a first supporting plate and a cup joint barrel. An adjusting device is arranged in the cup joint barrel, a lifting plate is fixed to the adjusting device, a conveying motor is arranged on the first supporting plate, a first synchronous wheel is arranged on the conveying motor, a first synchronous wheel is rotationally arranged on the lifting plate, and the first synchronous wheels are connected through a first conveying belt. The recycling device comprises second supporting plates, recycling motors are fixed to the second supporting plates, second synchronous wheels are fixed to the output ends of the recycling motors, andthe second synchronous wh