Cooling device for printing machine

The utility model relates to a cooling device for a printing machine, and relates to the field of printing, the cooling device comprises a cooling roller, a water inlet pipe, a water outlet cylinder and a heat insulation piece, the interior of the cooling roller is a cavity, and the cooling roller is connected with a driving piece for driving the cooling roller to rotate; the water inlet pipe is communicated with the cooling roller; the water outlet cylinder is positioned in the cooling roller and extends out of the cooling roller; the heat insulation piece wraps the outer surface of the water outlet cylinder. The printing paper cooling device has the effects that after printed paper is cooled through the cooling roller, the cooling roller cools the printing paper, the flatness of the printing paper is kept, and the printing paper is prevented from deforming. 本申请涉及一种印刷机用冷却装置，涉及印刷的领域，其包括冷却辊、进水管、出水筒与隔热件，冷却辊内部呈空腔，冷却辊连接有驱动冷却辊转动的驱动件；进水管与冷却辊连通；出水筒位于冷却辊内，且延伸出冷却辊；隔热件包覆于出水筒的外表面。本申请具有印刷好的纸张经过冷却辊冷却后，冷却辊为印刷纸进行降温，保持印刷纸的平整