Quantitative cutting device for firework paper tube

The utility model relates to the field of firework paper tube cutting, in particular to a firework paper tube quantitative cutting device which comprises a rolling mechanism, the top of the rolling mechanism is fixedly connected with the bottom of a rotating mechanism, the top of the rolling mechanism is fixedly connected with the bottom of a moving part, and the top of the rolling mechanism is fixedly connected with the bottom of a cutting mechanism. The top of the cutting mechanism is movably connected with the bottom of the lifting part, a first motor is started, the first motor rotates to drive a lower roller to rotate, the lower roller rolls to drive an upper roller to roll and a paper tube to move forwards, paper tube deformation in the paper tube cutting process is avoided, and people can use the paper tube cutting device conveniently; a second spring and a first spring move upwards under the action of elastic force, so that vertical movement of a shearing block is achieved, a second motor is started,