Cooling mechanism for preventing blockage of roller

The cooling mechanism comprises a working table, two supports are symmetrically and fixedly connected to the upper end of the working table, and a first hollow supporting rod and a second hollow supporting rod are rotationally connected to the two supports in a penetrating mode respectively. An outer roller which is communicated with the first hollow supporting rod and the second hollow supporting rod is jointly connected between the first hollow supporting rod and the second hollow supporting rod, the interior of the outer roller is made of stainless steel materials, and a water passing assembly which enables cold water to circulate and accelerates the cooling efficiency is installed in the outer roller. The roller is reasonable in structural design, stainless steel is adopted in the roller, the rusting phenomenon in the roller can be reduced, the water inlet pipe and the water outlet pipe are made of copper and are straight-through, blockage caused by rust slag can be reduced, the inner space of the outer r