Application of automatic coating machine: suitable for gluing shoe materials, electronics industry, sponge, EVA, PE, cloth, etc. Process requirements The coating machine needs to evenly adhere glue or ink to the surface of aluminum foil, plastic film or cloth textiles. The coating process is relatively high. It not only requires a uniform coating height, but also requires high-speed non-stop roll change to improve production effectiveness. The advantages of the scheme: the inverter completes the tension control at all levels, and the tension sensor is used to achieve the tension control. The system is simple and stable. Use PLC or synchronous controller to control the speed of the drive roller inverter, and at the same time as the linear speed signal of other inverters.