Carding machine with function of automatically sensing nep position

A carding machine with an automatic nep position sensing function comprises a feeding curtain. The cotton feeding roller set is arranged between wallboards of the machine frame, the fiber feeding transfer roller is located on the right side of the cotton feeding roller set, the transfer roller is located between the lower portion of the right side of the cotton feeding roller set and the lower portion of the left side of the fiber feeding transfer roller, the licker-in is located on the right side of the fiber feeding transfer roller, the breast cylinder is located below the right side of the licker-in, and the fiber transfer roller is located on the right side of the breast cylinder. The upper doffer, the lower doffer, the upper inner random roller, the upper outer random roller, the lower inner random roller and the lower outer random roller are located on the right side of the upper doffer, the upper inner random roller is located on the right side of the upper doffer, the upper outer random roller is loca