Pay-off device

The invention discloses a pay-off device and aims to solve the problems that resource waste and hand scratching are easily caused when a user straightens hard wires with hands directly. The pay-off device is characterized in that a front fixed plate and a back fixed plate are fixedly arranged on the ground at an interval, a pair of guide rails is laid between the front fixed plate and the back fixed plate, rail wheels capable of traveling along the guide wheels are arranged at the bottom of a flat plate, a C-shaped retainer ring is arranged at the top of the flat plate, a fixer is arranged in a cavity of the retainer ring, a plurality of arc-shaped movable plates are arranged around the fixer, a first spring is arranged between each movable plate and the fixer, a fixed press plate and a movable press plate which are used for clamping hard wires are arranged on the flat plate, a support is in sliding connection with the guide rails, a projection is formed on one side, close to the flat plate, of the support, a groove is formed in one side of the projection, a movable pin only capable of moving up and down is arranged on the projection, and a hook on the flat plate extends into the groove and then can be penetratingly arranged on the movable pin. The pay-off device is driven by a motor, and accordingly, human hands can be protected from being scratched when used for straightening the hard wires directly.