Cotton yarn winding anti-breakage device

The utility model discloses a cotton yarn coiling anti-fracture device which comprises a rack, a rotating shaft is installed on the rack, a barrel is installed on the rotating shaft, a plurality of sliding blocks are clamped in the barrel in a sliding and sealing mode, the sliding blocks are used for being in contact fit with yarn, a hollow shaft is installed on the rack in a rotating mode, the hollow shaft and the rotating shaft are coaxially arranged, the hollow shaft is communicated with the barrel, and the hollow shaft is connected with the barrel. A pressure cylinder is installed on the machine frame, the input end of the hollow shaft is communicated with the pressure cylinder, an electric cylinder is installed on the machine frame, a pressure plate is installed at the output end of the electric cylinder, and the pressure plate is clamped in the pressure cylinder in a sliding and sealing mode. The pressure cylinder drives the sliding block in the barrel to stretch out and draw back, the tensioning degree