Waste metering device, waste metering method and optical cable production line

The invention relates to the technical field of optical fiber preparation, and discloses a waste metering device, a waste metering method and an optical cable production line. The waste metering device comprises a counting assembly, an optical fiber detection piece and a fiber paste detection piece. The counting assembly is connected with the output screw of the extruder to record the number of turns of rotation of the output screw, meanwhile, the optical fiber detection piece and the fiber paste detection piece are used for detecting optical fiber and fiber paste output, the number of turns of rotation of the output screw when the extruder produces waste can be obtained, and then the output amount of the waste is calculated. Therefore, the technical problems that in the prior art, the labor intensity of metering of manual waste collection is large, and the result is inaccurate are solved, automatic metering of the waste in optical cable production is achieved, the labor intensity is reduced, and the producti