Quartz fiber chopping machine and quartz fiber shearing mechanism thereof

The invention relates to a quartz fiber chopping machine and a quartz fiber shearing mechanism thereof. The bundling pipe is used for restraining a quartz fiber bundle; the two cutter rotating shafts are symmetrically arranged relative to the bundling pipe, and the axes of the cutter rotating shafts are parallel to the axis of the bundling pipe; the driving device drives the two cutter rotating shafts to synchronously and relatively rotate; each cutting tool is provided with an arc-shaped cutting part, saw-toothed cutting edges are uniformly distributed on the cutting parts, at least two groups of cutting tools are arranged, the two cutting tools in each group are respectively arranged on two tool rotating shafts, and the lower surface of one of the cutting tools in each group can be in contact with the upper surface of the other cutting tool in the moving process so as to cut quartz fibers between the two cutting tools; the cutting part of each group of cutting knives is arranged towards the bundling pipe, a