Corrosion resistance detection mechanism for printing ink packaging barrel

The utility model relates to a corrosion resistance detection mechanism for a printing ink packaging barrel, a V-shaped groove used for supporting the printing ink packaging barrel is formed in the upper part of a shell, a rotating shaft extending in the left-right direction is movably arranged in the center of the shell in a penetrating manner, and a cam is fixedly arranged at the right end of the rotating shaft; a pressing plate is attached to the surface of the cam, an ejector rod is fixedly arranged on the upper portion of the pressing plate, the ejector rod penetrates through the shell so that the upper end of the ejector rod can be located on the outer side of the shell, and a clamping block used for clamping the printing ink packaging barrel placed on the V-shaped groove is fixedly arranged at the upper end of the ejector rod. Arc grooves matched with the printing ink packaging barrels placed on the V-shaped grooves are formed in the surfaces of the clamping blocks. A limiting rod is rotationally assem