Adjust the speed of the rubber roller With adjustable speed of the rubber roller and flim, parallel to the barrel with a relay change the belt tension, and flim.
Variable speed with the speed of the roller rubber roller rubber flim and the relay switch in parallel with the barrel with adjustable stiffness and flim belt.
Adjust the speed of the roller rubber with adjustable speed flim and adjust the roller rubber parallel to the barrel with change relayตัว adjust flim taut and change the belt.