This state-of-the-art machine, a four-roller plate rolling marvel, features the top roller as its pivotal component, ensuring unparalleled precision and efficiency. It serves as the primary drive, executing rotational movements with finesse. Meanwhile, the lower roller gracefully moves up and down, skillfully guiding the plate to ensure flawless frictional alignment lengthwise. The two side rollers perform an elegant up-and-down dance at an angle, masterfully imparting the desired plastic deformation to the steel plate. With the ingeniously adjustable side roller, the machine achieves both symmetric and asymmetrical bending, minimizing the flat end. This offers a significant advantage over traditional three-roller machines by eliminating the cumbersome pre-bending procedures and devices, while also providing rough leveling for the steel plate. Such capabilities render it indispensable across a multitude of industries, including petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectricity, metal structures, and machinery.
Machine construction:
The core structure of this sophisticated machine encompasses the upper roller device and driving unit, lower roller device, side roller apparatus, hydraulic drop end system, lubrication unit, left and right frames, chassis, and more, meticulously assembled for optimal performance.
(body frame drawing)
top roller and driving assembly
The Top roller device incorporates the top roller, a hydraulic drop end, fixed bearing, hydraulic motor, and bearing, all crafted for precision.
The top roller deftly transfers torque via a connected hydraulic motor, setting the whole system in motion. A robust protective steel bushing is securely fitted with the hydraulic drop end.
movement. The hydraulic drop end is thoughtfully equipped with a protective steel bushing for added durability.
lower roller and position inspection unit
The lower roller device comprises the lower roller, oil cylinder, lower roller bearing, and a self-aligning bearing, all engineered for excellence.
Each sliding bearing block, which supports the lower roller, is perfectly aligned with the frame guide rail. Mounted on two oil cylinders, the hydraulic system provides smooth up-down movement power for the lower roller. The main oil cylinder operates at a powerful rated pressure of 16Mpa. Advanced sensors track the up-down distance, displaying it clearly on an LCD. The hydraulic system's adjustable pressure guarantees precise hydraulic power to meet the desired rolling force, ensuring unmatched performance.
(hydraulic drivers drawing)
side roller apparatus
The side roller device is meticulously composed of the side roller's main oil cylinder, self-aligning bearing, and other bearings, ensuring flawless operation.
Bearing blocks provide steadfast support to the side roller, with each side harmonizing seamlessly with the frame's guide rail.
The side roller bearing block's up-down movement is powered by four strategically positioned oil cylinders within the frame. Sensors installed on the side rollers and frame deliver precise measurements of the movement, with results prominently displayed on an LCD for easy viewing.
To achieve a stunningly precise cone shape, self-aligning bearings are employed for both side and lower rollers. As the lower roller's level and alignment become inclined, fine-tuning adjustments ensure a snug fit between lower and side rollers, introducing a calculated degree of inclination relative to the horizontal for impeccable results.
3-4, hydraulic drop end
The hydraulic drop end device comprises oil cylinders, joints, bearing blocks, and more, all ingeniously designed for seamless operation.
The hydraulic drop end system facilitates effortless product removal along the Roller shaft, streamlining the production process.
Upon completing hydraulic drop closure or opening, the oil cylinder's stroke is expertly reset to zero.The power source is a dependable hydraulic station, ensuring consistent and reliable performance.
Balance device
Our state-of-the-art balance device is ingeniously crafted with a cutting-edge, compact structure, ensuring unparalleled performance. When the tipping rack gracefully slips off the bearing face of the top roller and initiates its tipping movement, this advanced balance device comes into play. As gravity naturally draws the top roller's end downwards, this expertly designed apparatus maintains perfect equilibrium by being thoughtfully positioned on the fixed side. This strategic placement, at a meticulously calculated distance from the fixed frame, is firmly anchored by high-quality screws, guaranteeing stability and exceptional operational efficiency.
(plate rolling drawing)
Hydraulic System
Our cutting-edge hydraulic system is a masterpiece, meticulously assembled from a high-precision gear pump, an intricate valve group, and premium auxiliary pipelines to ensure flawless operation.
The hydraulic valve features the acclaimed Yuken superposition series, which ingeniously ensures that the pipeline layoutis
astonishingly intuitive, significantly reducing leakage and simplifying maintenance for exceptional efficiency.
This sophisticated system architecture incorporates three distinct loops: the pressure adjusting loop, synchronization loop, and speed loop, each meticulously contributing to a harmonious and efficient operation.
The pressure adjusting loop expertly modulates the system’s working pressure utilizing the main overflow valve, achieving a robust working pressure of 16Mpa, ensuring consistent performance.
The synchronization loop deftly fine-tunes the in-sync movement of the lower roller through the precise flow divider and throttle valve, allowing for impeccable speed adjustments.
The speed loop artfully manages frame descent, reset operations, and speed calibrations with precision, through the adept use of the 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 functioning at 380V/50Hz. Equipped with robust short circuit and overload protection for the main motor, and utilizing an AC contactor for managing both positive and reverse rotations. Through the power of PLC programmable control technology, this system boasts minimal relay usage, enhancing stability and longevity. Strategically placed buttons and indicator lights on the control table ensure the entire rolling process is streamlined and efficiently managed, with every operational aspect scrutinized with precision.
CNC System
The NC system is a paragon of reliability, designed with a rotational encoder and a high-reliability industrial controller, creating a steadfast and dependable control system.
CNC Function
CThis advanced NC system offers 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 of an impressive ±0.15mm.
The state-of-the-art programmable display provides comprehensive real-time visibility of the lower roller and side roller end positions,
and these parameters can be effortlessly configured and set to suit precise requirements.
With an extraordinary displacement transducer resolution of 0.10mm, the display precision reaches an impressive ±0.10mm.
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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