Four Roller Hydraulic Cone Rolling Machine

This is a four roller inclined cone forming machine, of which the work rollers are in cone shape.

Advanced technology and our own research achievements are combined in this machine.

Four roller hydraulic rolling machine is widely used in boiler, chemical, mining, construction,

ship building industries to form cone shape components.

For this machine, the position of the upper roller is fixed while the lower roller and two side rollers

are movable.

The upper roller is a driving roller, it passes driving force rolling process through reducer's output gear

which is engaged with the upper roller gear.

The lower roller performs vertical movement driven by piston motion which is driven by hydraulic oil.

The lower roller lifts to tight clamp the material plate.

There are one side roller on each side of the lower roller,

which performs upward and downward movement along the inclined guide rail.

Rolling process: Place the prepared plate material in between the upper roller and the lower rollers.

The lower roller oil cylinders can be adjusted to tight clamp the material plate.

The side roller oil cylinders can be adjusted to accord the small side arc and the bigger side arc to

control taper of the product.

q Four roller rolling machine is widely accepted as the fastest, the most accurate,

the most easy to operate rolling machine.

q The back side roller performs as a stopper for the material plate.

q After the plate is leveled, it is clamped by the upper roller and the lower roller,

which enables the convenient and safe pre bending and rolling process and greatly eliminate the risk of slipe.

q After the beginning of the plate is pre bended, the plate is then coiled to cone shape product with required

diameter (Four roller rolling machine performs both front bending function and back bending function).

Cone product can be achieved with only one time process.

Room only be needed on the feeding side, which enables the machine with low room consumption.

q During the rolling process, the material plate is tightly clamped and driving forward.

Four roller rolling machine is the only machine that can be controlled by NC and CNC.

q During the pre bending operation, the material plate won't incline to below the work surface.

q The inclination adjustment of the side rollers makes it very convenient for shape correction.

q Lock loop consist two hydraulic proportional valve and "H" shape reversing valve is adopted

in the lower roller and the two side rollers. Synchronization accuracy of both sides reaches +/-0.2mm, which ensures that the lower roller and the two side rollers moves accurately to required position.

q The finished products are of high roundness accuracy.

It performs better shape correction function than three roller rolling machines.

q The hydraulic system is equipped with overpressure protection, while the electronic system is equipped

with breaker for over current protection, thermal relay for overload protection.

The instruction light performs alarming when failure occurs.

Interlocks are combined in this machine.