Yarn frame of circular knitting machine

The utility model discloses a circular knitting machine yarn frame which comprises a yarn frame body, three sets of bottom columns are fixedly connected to the rear end of the yarn frame body, a supporting circular ring is arranged outside the yarn frame body, a plurality of sets of containing grooves are formed in the yarn frame body in a penetrating mode, reinforcing supporting plates are connected to the interiors of the containing grooves in a clamped mode, and the reinforcing supporting plates are connected to the interiors of the containing grooves in a clamped mode. A plurality of sets of limiting grooves are formed in the inner wall of the supporting circular ring, and inserting plates are fixedly connected to the top ends of the interiors of the limiting grooves. According to the yarn frame of the circular knitting machine, the reinforcing supporting plate, the containing groove, the limiting groove, the inserting plate, the inserting base and the inserting groove are arranged, the supporting force a