Needle grinding disc opening device of knitting machine thread adjusting machine

The utility model discloses a needle grinding disc opening device of a thread adjusting machine of a knitting machine. The device comprises a base, a concave fixing frame and a fixing seat, a concavefixing frame is welded to the outer surface wall of the base. The concave fixing frame is in threaded connection with a threaded rod; the bottom end of the threaded rod penetrates through the concavefixing frame and extends into the concave fixing frame; and a pressing plate is welded to the bottom end of the threaded rod, a fixing base is arranged above the base, an annular groove is formed in the upper surface of the base, a sliding block is welded to the lower surface of the fixing base, the sliding block is slidably connected with the annular groove, and a servo motor is fixedly embeddedin the position, located in the center of the interior of the annular groove, of the upper surface of the base. According to the needle grinding disc opening device of the yarn adjusting machine of the knitting machine, the con