This state-of-the-art machine is a four-roller plate rolling marvel, featuring the top roller as its pivotal component, driving the precision and finesse our customers expect. It serves as the primary drive, executing rotational movements with grace. The lower roller elegantly ascends and descends, guiding the plate with precision while ensuring friction aligns it perfectly lengthwise. The two side rollers, with their fluid up-and-down angular motion, deliver the desired plastic deformation to the steel plate. Thanks to the adjustable side roller, this machine effortlessly achieves both symmetric and asymmetrical bending with a minimal flat end, surpassing traditional three-roller machines by doing away with cumbersome pre-bending procedures and devices. This also provides rough leveling of the steel plate, making it an invaluable asset in industries such as petroleum, chemical production, boiler manufacturing, shipbuilding, hydroelectricity, metal structures, and machinery.
Machine construction:
The core structure of this sophisticated machine comprises the upper roller device and driving unit, lower roller device, side roller apparatus, hydraulic drop end system, lubrication unit, durable left and right frames, robust chassis, and more.
(body frame drawing)
top roller and driving assembly
The Top roller device features a top roller, a hydraulic drop end, fixed bearing, hydraulic motor, and bearing, all working in concert.
The top roller transmits torque via a connected hydraulic motor to initiate its smooth rotation. A protective steel bushing is meticulously fitted with the hydraulic drop end.
movement. This hydraulic drop end is expertly equipped with a protective steel bushing to ensure seamless operation.
lower roller and position inspection unit
The lower roller device consists of a lower roller, oil cylinder, lower roller bearing, and a self-aligning bearing, all designed for optimal performance.
Each sliding bearing block, which supports the lower roller, aligns flawlessly with the frame guide rail. Mounted on two oil cylinders, the hydraulic system provides the power for up-down movement of the lower roller. The primary oil cylinder operates at a rated pressure of 16Mpa, while sensors meticulously track the up-down distance, displaying the data on an LCD. This adjustable hydraulic system ensures precise power to meet desired rolling force, elevating accuracy to the next level.
(hydraulic drivers drawing)
side roller apparatus
The side roller device is expertly crafted with the side roller's main oil cylinder, self-aligning bearing, and other essential bearings.
Bearing blocks provide unwavering support to the side roller, with each side seamlessly coordinating with the frame's guide rail for optimal function.
The up-down movement of the side roller bearing block is driven by four strategically placed oil cylinders within the frame. Sensors, installed on both the side rollers and frame, meticulously measure the movement, which is displayed on an LCD for easy monitoring.
To achieve a stunningly exquisite cone shape, self-aligning bearings are employed for both side and lower rollers. With the lower roller level and alignment adjusted to become inclined, fine-tuning achieves a snug fit between lower and side rollers, introducing a precise degree of inclination relative to the horizontal.
3-4, hydraulic drop end
The hydraulic drop end device includes robust oil cylinders, joints, bearing blocks, and more, ensuring efficiency.
The hydraulic drop end system ensures effortless product removal along the Roller shaft, streamlining operations.
After completing hydraulic drop closure or opening, the oil cylinder's stroke is ingeniously reset to zero, maintaining precision.The power source is reliably provided by a state-of-the-art hydraulic station, ensuring consistent performance.
Balance device
Ingeniously crafted to revolutionize balance, our state-of-the-art device boasts a cutting-edge, compact structure that ensures unparalleled performance. When the tipping rack elegantly slips from the bearing face of the top roller and begins its graceful tipping motion, this advanced balance apparatus steps into action. As gravity naturally tugs the top roller's end downward, this expertly designed mechanism maintains perfect equilibrium, strategically positioned on the fixed side. This precise placement, at a meticulously calculated distance from the fixed frame, is securely anchored by premium screws, guaranteeing unwavering stability and exceptional operational efficiency.
(plate rolling drawing)
Hydraulic System
Our hydraulic system is nothing short of a masterpiece. Meticulously assembled with a high-precision gear pump, an intricate valve group, and premium auxiliary pipelines, it ensures flawless operation.
The hydraulic valve incorporates the renowned Yuken superposition series, ingeniously ensuring that the pipeline layoutis
remarkably intuitive, dramatically reducing leakage and simplifying maintenance, culminating in exceptional efficiency.
This sophisticated architecture boasts three distinct loops: the pressure adjusting loop, synchronization loop, and speed loop, each meticulously contributing to harmonious and efficient operations.
The pressure adjusting loop skillfully modulates the system’s working pressure via the main overflow valve, achieving a robust pressure of 16Mpa, ensuring consistent performance.
The synchronization loop deftly fine-tunes the synchronized movement of the lower roller through precise flow dividers and throttle valves, allowing impeccable speed adjustments.
The speed loop artfully governs frame descent, reset operations, and speed calibrations with precision, utilizing the adept throttle valve.
Electric Control System
Our electric control system is a marvel of engineering, featuring a seamlessly integrated electric cabinet, an advanced operation control table, and a versatile portable button box, all operating at 380V/50Hz. It is equipped with robust short circuit and overload protection for the main motor, employing an AC contactor for managing both positive and reverse rotations. Through the power of PLC programmable control technology, this system minimizes relay usage, enhancing stability and longevity. Strategically placed buttons and indicator lights on the control table ensure the entire rolling process is streamlined, efficiently managing every operational aspect with precision.
CNC System
The NC system is a paragon of reliability, featuring a rotational encoder and a high-reliability industrial controller, creating a steadfast and dependable control platform.
CNC Function
CThis advanced NC system provides unparalleled real-time monitoring, effortless data transmission, and dependable power-off memory throughout the entire rolling process, ensuring efficiency and reliability.
The industrial control PLC meticulously inspects the lower position and both ends of the side roller, guaranteeing synchronization precision with an impressive ±0.15mm accuracy.
The state-of-the-art programmable display offers comprehensive real-time visibility of the lower roller and side roller end positions,
and these parameters can be effortlessly configured and set to meet precise requirements.
With an extraordinary displacement transducer resolution of 0.10mm, the display precision achieves an impressive ±0.10mm accuracy.
Automatic Self-Judge Function
Manufacturer of the Standard Parts
| NAME |
Manufacture |
| Bearings |
Type |
Double row aligning bearing
|
| Manufacture |
Wafangdian |
| Rollers |
Material |
42CrMo forging upper roller and 45# steel other rollers |
| Manufacture |
Nangang/Warwick Steel
|
| Body frame |
Material |
Q235A |
| Processing methods |
Welded structural parts, annealing stress - shot blasting, CNC boring and milling machine machining
|
| Manufacture |
Pully |
| Hydraulic driver |
Jieshite |
| Hydraulic motor |
Nantong tongde |
| Main electrical element |
SIEMENS |
| Hydraulic system |
Pump |
Type |
Gear pump |
| Manufacture |
Changyuan |
| Valve |
Manufacture |
YUKEN |
| cylinder |
Piston rod |
45 Forgings, Heat treatment HRC48-52
|
| Manufacture |
Nantong |
| Sealing |
Yx |
| Manufacture |
NOK/dingji |
Electric system
|
|
digital control system |
| Hydraulic motor |
Nantong tongde |
| Touch screen |
Haiwei 15.6' |
| PLC |
XINJE |
| Sensor |
Milante |
| Main electrical element |
SchneiderElectric/Siemens |
Audited Supplier 
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