Four-Roll Rubber Calender

STRUCTURAL FEATURES: The 4 rolls are separately driven by 4 DC motors, which allow a wide rang of speed adjustment. The rotating speed ratio of the 4 rolls can be freely adjusted. The rolls are equipped with preloading device and bearings lubrication failure alarm device, as well as nip display and speed display. The rolls are made of chilled cast iron with vanadium and titanium alloys. The roll face is hard and anti-wear. To heat up or cool down, the rolls are either circumferentially drilled or centrally bored so as to make temperature well proportioned on the roll surface. The rolls are arranged in S form. Roll 1# and roll 4# have roll cambers that can eliminate bending impact on rolls during working process. Thus, it is possible to make products with same thickness along axial direction. The transmission system adopts a hard facing gearreducer, which has a compacted structure with higher transmission efficiency, lower noise and longer service life. The machine is equipped with emergency device. When an emergent accident occurs, the calendar will be immediately stopped to open the roll space so as to protect the operator and equipment. PLC program controller is used in electric system. ModelSpecifications XY-4S1730(Φ610)XY-4S2000(Φ610)XY-4S1500(Φ550) Equippedwith AxisCrossing DeviceArrangement of RollsS FormS FormS FormNumber of Rolls444Working Diameter of Rolls(mm)610610550Working Length of Rolls(mm)173020001500Linear Speed of Middle Roll(3#)(mmln)0450453.535Rotating Speed Ratio of Rolls(1#2#3#4#)AdjustableAdjustableAdjustableNip Range0 400 400 25Max Roll Temperature(oC)130130130Min Thickness of ProdUcts(mm)0.20.20.2Max Width of ProdUcts(mm)150018001300Main Motor Power(KW)4×554×554×45Speed Ruducer Hard Facing Gear ReducerSteam Pressure(MPa)0.30.50.30.50.30.5Cooling Water Pressure(MPa)0.20.30.20.30.20.3Overall Dimension(mm)8800×3300×41609030×3300×41608535×3505×3485Weiqht(Kg)697007370058000