The use of alloy tool steel, through a special heat treatment technology, manufacturing pattern, mirror rollers; have the characteristic that a variant of heat resistance, wear resistance, it is not easy to ensure the evenness of the glue. On rollers, pressure and reciprocating, diversion type structure is adopted, the fluid in and heating and cooling of the distribution equilibrium, at the same time, overcoming the in high speed rotation in shifting of the phenomenon. Roller gear and the driving gear, take integrated mobile way, avoid the pressure wheel pressure and separation when shifting gear noise. Pressure roller and roller and adopted linear slide pneumatic mode, improve safety performance.