This state-of-the-art machine is a masterpiece in four-roller plate rolling technology, where the top roller serves as the pivotal element, orchestrating impressive productivity. It serves as the primary drive, seamlessly executing rotational maneuvers. The lower roller performs precise vertical movements, artfully guiding the plate to ensure ideal friction and impeccable alignment. The two side rollers elegantly ascend and descend at an angle, imparting the desired plastic transformation to the steel plate. With its adaptable side roller, the machine adeptly achieves both symmetric and asymmetrical bending, resulting in minimal flat ends. This advantage over three-roller machines eliminates the need for cumbersome pre-bending tools and delivers rough leveling of steel plates. It becomes an invaluable asset across various sectors, including petroleum, chemical processing, boiler creation, shipbuilding, hydroelectric systems, metal structure fabrication, and more.
Machine construction:
The fundamental structure of this advanced machine encompasses the upper roller device, driving unit, lower roller devicee, side roller apparatus, a hydraulic drop end system, lubrication mechanism, left and right frames, chassis, and additional components.
(body frame drawing)
top roller and driving assembly
The Top roller device consists of the top roller, a hydraulic drop end, fixed bearing, hydraulic motor, and bearing.
The top roller efficiently transfers torque via the connected hydraulic motor, initiating smooth rotation. A protective steel bushing is expertly fitted with the hydraulic drop end.
movement. This hydraulic drop end is enhanced with a secure protective steel bushing.
lower roller and position inspection unit
The lower roller device is meticulously constructed with the lower roller, oil cylinder, lower roller bearing, and a self-aligning bearing.
Each sliding bearing block that supports the lower roller aligns with the frame's guide rail. It is mounted atop two oil cylinders, powered by the hydraulic system for smooth up-down movement. The main oil cylinder operates efficiently at a rated pressure of 16Mpa. Sensors track the up-down distance, with results clearly displayed on an LCD. The hydraulic system's adjustable pressure ensures precise hydraulic power, meeting the desired rolling force with accuracy.
(hydraulic drivers drawing)
side roller apparatus
The side roller device is intricately designed with the side roller's main oil cylinder, self-aligning bearing, and various other bearings.
Bearing blocks support the side roller, with each side harmoniously coordinating with the frame's guide rail for optimal performance.
The side roller bearing block's elegant up-down movement is propelled through four strategically placed oil cylinders within the frame. Sensors on the side rollers and frame measure the movement with precision, and results are wonderfully displayed on an LCD.
To achieve a stunning cone shape, self-aligning bearings are utilized for both side and lower rollers. By leveling the lower roller and adjusting alignment to be inclined, fine adjustments ensure a perfect fit between lower and side rollers, introducing an ideal degree of inclination relative to the horizontal.
3-4, hydraulic drop end
The hydraulic drop end device consists of oil cylinders, joints, bearing blocks, and additional components.
The hydraulic drop end system facilitates seamless product removal along the Roller shaft, streamlining operations.
Upon completion of hydraulic drop closure or opening, the oil cylinder's stroke is ingeniously reset to zero.The power source is a robust and reliable hydraulic station, ensuring consistent performance.
Balance device
The balance device is ingeniously designed with an innovative and compact structure, ensuring flawless performance even when the tipping rack slips off the bearing surface of the top roller and initiates its tipping sequence. As gravity elegantly guides the descent of the top roller’s end, this sophisticated balance device steps in to maintain equilibrium, strategically positioned on the fixed side. This precise placement creates an optimal distance from the fixed frame, expertly secured by screws to guarantee unyielding stability and exceptional efficiency.
(plate rolling drawing)
Hydraulic System
Our state-of-the-art hydraulic system is meticulously engineered from a high-precision gear pump, an advanced valve group, and auxiliary pipelines, ensuring seamless and efficient operation.
The hydraulic valve incorporates the Yuken superposition series, ensuring the pipeline layoutis
remarkably straightforward, minimizing potential leakage and simplifying maintenance for unparalleled efficiency and reliability.
The system architecture is comprised of three distinct loops: the pressure adjusting loop, synchronization loop, and speed loop, each contributing to a harmonious and precise operation.
The pressure adjusting loop expertly modulates the system’s working pressure through the main overflow valve, achieving an impressive working pressure of 16Mpa.
The synchronization loop fine-tunes the synchronized movement of the lower roller via the flow divider and throttle valve, allowing for precise speed adjustments and control.
The speed loop masterfully controls frame descent, reset operations, and speed adjustments through the throttle valve for optimal performance.
Electric Control System
The electric control system boasts an integrated electric cabinet, a sophisticated operation control table, and a portable button box, all operating at 380V/50Hz. Equipped with cutting-edge short circuit and overload protection for the main motor, it uses an AC contactor to adeptly manage positive and reverse rotations. The system employs advanced PLC programmable control technology, featuring minimal relay usage for enhanced system stability and longevity. Strategically placed buttons and indicator lights on the control table ensure a streamlined rolling process, overseeing every operational aspect with precision and ease.
CNC System
The NC system is innovatively designed with a rotational encoder and high-reliability industrial controller, establishing a consistent and dependable control system.
CNC Function
CThis sophisticated NC system offers real-time monitoring, seamless data transmission, and steadfast power-off memory throughout the rolling process for an uninterrupted experience.
The industrial control PLC automatically inspects the lower position and both ends of the side roller, ensuring a synchronization precision to an impressive ±0.15mm.
The programmable display provides real-time visibility of the lower roller and side roller end positions,
and these parameters can be easily configured and set, tailoring the system to specific needs.
With a displacement transducer resolution of 0.10mm, the display precision achieves an extraordinary ±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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