Auxiliary material cleaning device for FPC circuit board drilling

The invention relates to an auxiliary material cleaning device for FPC circuit board drilling, and relates to the technical field of flexible circuit boards. The device comprises an operation table, the upper end of the operation table is fixedly connected with a fixing table, the upper end of the fixing table is fixedly connected with a mounting frame, one side of the mounting frame is slidably provided with an L-shaped frame, the upper end of the L-shaped frame is fixedly connected with a second air cylinder, and a piston rod of the second air cylinder movably penetrates through the lower end of the L-shaped frame and is fixedly connected with a mounting frame; a connecting hopper and a third motor are fixedly connected to the inner top wall of the mounting frame, two air pipes are arranged at the upper end of the L-shaped frame, the lower ends of the two air pipes movably penetrate through the inner top wall of the mounting frame, and the high-pressure air pump, the mounting pipe, the connecting hopper, th