Powder spraying and baking separation hub coating line center protection

The utility model relates to the field of hub production, and discloses a powder spraying and baking separation hub coating line center protection, which effectively solves the problem of poorer hub assembly effect caused by still existence of floating powder in a center hole due to poor powder blowing effect in the prior art, and comprises an upper check block, a top block is mounted at the top end of the upper check block, and a lower check block is mounted at the bottom end of the upper check block. An upper stop block is installed at the bottom end of the cap groove, a lower stop block is installed at the bottom end of the upper stop block, the top block is used for facilitating taking and placing operation, the diameter of the lower stop block is smaller than that of the upper stop block, the upper stop block is inserted into the cap groove, the outer wall of the upper stop block is tightly attached to the inner wall of the cap groove, and the lower stop block is inserted into the cap spigot. The upper c