Online punching sampling device of lithium ion battery coating machine

The utility model provides an on-line punching and sampling device of a lithium ion battery coating machine. The on-line punching and sampling device comprises a machine shell, the punching cavity is formed in an inner cavity of the machine shell, and the two ends of the punching cavity penetrate to the two side walls of the machine shell. According to the on-line punching and sampling device of the lithium ion battery coating machine, when the width of a pole piece is large, the lower mounting base is detached, the fixing bolt is taken out from the interior of the mounting block through the threaded groove, the lower mounting base is pulled downwards, and the pole piece is punched and sampled. A positioning rod is separated from a positioning hole in an upper mounting seat, and meanwhile, a mounting block is separated from a mounting groove in the upper mounting seat, so that a lower mounting seat and a cutting knife can be disassembled, and the equipment can replace the cutting knives with different sizes a