Arc roll along the longitudinal direction is a have certain radian and fixed by the ball bearing rotating roller. Due to arc roll have certain radian, when paper/film through arc roller rotation, paper/film will be stretched in the longitudinal direction, to achieve the stretch material picture effect, eliminate to fold and prevent the material in the process of painting material may be produced in the process of cutting. That is to say, the arc roller is fixed, roller surface can be rotating bending, used for paper, film, textiles and similar products processing equipment.

Tension controller is to change the voltage, turn AC220V into DC24V feeding process: torque motor output torque, connecting the magnetic powder brake and magnetic powder brake connect torque feeding shaft, for receiving. Torque motor by the controller to adjust speed, magnetic powder brake tension controller by adjusting the rotational speed, uniform feeding, speed is appropriate. Receiving process: torque motor output torque, connecting the magnetic powder clutch, magnetic powder clutch will even receive material shaft torque, for receiving. Torque motor by the controller to adjust speed, magnetic powder clutch tension controller by adjusting the tension, make uniform material-collecting, appropriate speed, cylinder volume.