Single-arm double-cathode automatic conversion device based on PLC control

The utility model relates to the technical field of electroplating, and discloses a single-arm double-cathode automatic conversion device based on PLC (programmable logic controller) control, which comprises a bottom plate, the bottom plate consists of a fixed plate I, a connecting plate and a fixed plate II, the fixed plate I and the fixed plate II are connected through the connecting plate, a movable box is placed at the top of the connecting plate, and the movable box is connected with the fixed plate through the connecting plate. The middle of the moving box is connected with a lifting rod through a first hydraulic rod, a first electromagnet is embedded in the top of the middle of the moving box, and the two sides of the bottom end of the moving box are connected with two clamping plates through double-end lead screws. According to the single-arm double-cathode automatic conversion device based on PLC control, the moving box is driven to move in a lead screw transmission mode, the threaded sleeve and the