Horizontal ball polishing machine with double-layer grinding function

The utility model belongs to the technical field of ball polishing machines, and discloses a double-layer grinding horizontal ball polishing machine which comprises a shell, a bottom plate is fixedly installed in the shell, a groove is formed in the bottom plate, a moving block is movably installed in the groove, and a first pneumatic cylinder is fixedly installed at the right end of the moving block. Through the arrangement of the moving block, the first pneumatic cylinder, the first connecting rod and the vertical rod, due to the operation of the first pneumatic cylinder, a leftward force can be applied to the moving block, so that the moving block moves leftwards, and the lower millstone rotates leftwards by taking the bottom end of the vertical rod as a rotating point through the transmission action of the first connecting rod; and the light balls in the annular groove enter the collecting box, the phenomenon that the light balls on the grinding disc are manually collected one by one is avoided, and the p