This application provides a bending device for paint-free boards, involving a box: a box door is movably connected to the front side wall of the box, a support plate is fixedly connected to the inner wall of the box, a
water storage tank is fixedly connected to the inner wall of the box, an
electric heating tube is fixedly connected to the inner wall of the
water storage tank, and a water inlet
pipe is fixedly connected to the top of the
water storage tank. The top end of the water inlet
pipe penetrates the top of the box, and a valve is installed on the water inlet
pipe. A high-temperature resistant self-priming pump is fixedly connected to the top of the box, and an air suction pipe and an air outlet pipe are fixedly connected to the high-temperature resistant self-priming pump. The other end of the air suction pipe penetrates the top of the box and the
water storage tank, and the other end of the air outlet pipe penetrates the top of the box and is fixedly connected to an
exhaust pipe. Several
nozzle pipes are fixedly connected to the
exhaust pipe. This utility model has the characteristics of maintaining the temperature of the paint-free board and improving the convenience of bending the paint-free board.