Canning and ball-point pen detection equipment based on electromagnetic principle

The invention relates to the technical field of ball-point pen ink canning detection, and discloses canning and ball-point pen detection equipment based on an electromagnetic principle. The equipmentcomprises a conveying belt, wherein gears are movably connected in the conveying belt; the surfaces of the gears are movably connected with a supporting plate; the surface of the supporting plate is in sliding connection with expansion frames; the surface of each expansion frame is movably connected with a paper board; two sides of each expansion frame are independently movably connected with an electric box; the surface of each electric box is movably connected with an elastic tube; the upper end of each elastic tube is movably connected with a canning tank; a compression spring is movably connected in each canning tank; the surface of each compression spring is movably connected with a magnet; the surface of each magnet is fixedly connected with a suction tube; and one end, which is faraway from the magnet, of e