W12-90×4000 4 Roller Steel Plate Rolling Machine , Pre – Bending Thickness 70mm
Description and Parameters
1. High precision And pre-bending
2. NC ccontrol, high productivity
3. Can roll shapes of O, U, several R, taper in certain range
4. Plate with Hydrulic system
5. Good accuracy
The features of hydraulic plate rolling machine :
The hydraulic rolling machine is widely used in petroleum, chemical industry, cement, boiler, shipbuilding, aviation, water conservancy, power transmission towers and other machinery and equipment. Its working principle is rotating bending deformation.
A cylinder can be rolled, including the pre-bending of both ends, feeding the plate forward through the rolls, one time only. The operator should find only one position for each side roll, to get the part finished which is supported by permanent lubrication technology (bearing life period without refueling).
|Model||Max pre-bending thickness(mm)||Max bending thickness
|Diameter of upper roller
|Max plate width
|Main motor power
This equipment should be composed of main structure, hydraulic system , electricity control system and cone device.
1. The main structure
The main structure is composed of upper roller , down rollers and level motion device support rolls device , tuning device , balance device, lubricate device , left and right work frame and bottom plate.
1) The upper roller
upper rolls device composed of main cylinder, upper bearing pedestal, upper rolls, double self-aligning bearing .two cylinders provide the pressure for upper roll bending , main cylinder working pressure is 20 Mpa ,max pressure of upper roll multiply 0.8 times to compensate for pre-bending. Upper roll two ends fit with double self-aligning bearing to reduce the friction and motor power.
2) Support device
Composed of sloping block device, support device, support rolls bearing pedestal, support lifting device, support rolls can adjust up and down. The adjustment depend on plate speciation. The material of support is 45# , heat treatment is HB220-280, it made up in helix sharp to protect the surface.
3) Main drive device
It composed of motor, hard gear speed reducer, output gear, main motor can tuning in two direction and provide bending pitch of strand.
Composed of ram, bearing, tuning cylinder
5) Balance device
Composed of balance compact, screw
2. Hydraulic system
Composed of Y series motor, gear pump , valves , oil tank, pipe and so on.
Max pressure is 20 Mpa , testing pressure is 24 Mpa , pressure adjusted by overflow valve, system working pressure 0-19 MPa , normal pressure is 15Mpa . the valves adopted from Taiwan.
3. Electricity system
Composed of electrical box, operation table , manual button . the power is 380V50HZ adopted PLC control system code with longevity easily operate. Whole bending process can read from the indicator setting on the control box.