The utility model discloses a hot
oil type energy-saving heating roller, which belongs to the field of printing
machine accessories and comprises a roller body, the middle of the roller body is hollow to form a cavity, two sealing blocks are arranged in the roller body in a sliding mode, oil conveying holes are arranged in the middles of the sealing blocks, one end of each oil conveying hole is communicated with the cavity, and the other end of each oil conveying hole is connected with a
heating oil pump through an oil conveying
pipe. By means of the inner cavity of the heating roller, heated hot oil is injected, heat of the hot oil is transmitted to the heating roller, the
heating effect is achieved, the contact area of the inner cavity and the hot
oil can be adjusted through the sealing baffle, and therefore the
contact position of the hot oil and the heating roller is adjusted, the heating position can be adjusted according to needs, and the
heating effect is improved. According to the utility model, the positions which do not work cannot be heated, so that the situations that the whole heating roller is large in heating area and needs more
energy investment due to heating of the whole heating roller, and the energy is flat and lost due to the fact that the heating positions do not need to be put into production are reduced.