This revolutionary four-roller plate rolling machine is a marvel of modern engineering, with the top roller serving as the pivotal component of its design. It functions as the primary drive mechanism, executing rotational movements. Meanwhile, the lower roller elegantly maneuvers up and down to guide the steel plate with finesse, ensuring friction aligns seamlessly lengthwise. The two side rollers perform sophisticated up and down movements at a calculated angle, crafting the desired plastic deformation of the steel plate. The adjustable side roller empowers this machine to master both symmetric and asymmetrical bending, achieving a minimal flat end. This surpasses the capabilities of traditional three-roller machines by eliminating the need for additional pre-bending procedures and devices, while even offering rough leveling of the steel plate. This machine becomes an indispensable asset in various industries including petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectricity, metal structures, and machinery.
Machine construction:
The core infrastructure of this intricate machine includes 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 intricately designed parts.
(body frame drawing)
top roller and driving assembly
The Top roller device comprises the top roller, a hydraulic drop end, fixed bearing, hydraulic motor, and bearing, all working in harmony.
The top roller transmits torque seamlessly via a connected hydraulic motor, initiating precise rotation. A protective steel bushing is meticulously integrated with the hydraulic drop end.
movement system. The hydraulic drop end is equipped with a robust protective steel bushing.
lower roller and position inspection unit
The lower roller device features the lower roller, oil cylinder, lower roller bearing, and a self-aligning bearing, ensuring optimal performance.
Each sliding bearing block, supporting the lower roller, is perfectly aligned with the frame guide rail. It is mounted on two oil cylinders, with the hydraulic system providing the essential up-down movement power for the lower roller. The main oil cylinder operates at an impressive rated pressure of 16Mpa. Advanced sensors meticulously track the up-down distance, displaying the results on a high-definition LCD. The adjustable pressure within the hydraulic system ensures precise hydraulic power, meeting the desired rolling force effortlessly.
(hydraulic drivers drawing)
side roller apparatus
The side roller device is intricately composed of the main oil cylinder, self-aligning bearing, and other high-quality bearings.
Bearing blocks support the side roller, with each side coordinating seamlessly with the frame's precisely engineered guide rail.
The up-down movement of the side roller bearing block is driven through four strategically positioned oil cylinders within the frame. State-of-the-art sensors on the side rollers and frame capture the movement, with results clearly visible on an LCD.
To achieve an exquisite cone shape, self-aligning bearings are employed for both side and lower rollers. As the lower roller level adjusts and the alignment becomes inclined, precise fine adjustments enable a snug connection between lower and side rollers, introducing an optimal degree of inclination relative to the horizontal plane.
3-4, hydraulic drop end
The hydraulic drop end device comprises a series of oil cylinders, joints, bearing blocks, and additional components.
The hydraulic drop end system enables effortless removal of products along the Roller shaft, streamlining operations.
Upon the completion of hydraulic drop closure or opening, the oil cylinder's stroke is reset to zero, ensuring readiness for the next operation.The power source is derived from a robust and dependable hydraulic station.
Balance device
Our cutting-edge balance device is expertly designed with a compact and modern structure, delivering unmatched performance. As the tipping rack elegantly disengages from the bearing surface of the top roller and initiates its tipping motion, this advanced balance device springs into action. With the force of gravity drawing the top roller's end downward, this ingeniously engineered apparatus maintains perfect equilibrium by being strategically positioned on the fixed side. This precise placement, at a carefully calculated distance from the fixed frame, is securely anchored with high-quality screws, ensuring both stability and optimal operational efficiency.
(plate rolling drawing)
Hydraulic System
Our state-of-the-art hydraulic system is an engineering marvel, meticulously crafted from a high-precision gear pump, an intricate valve group, and superior auxiliary pipelines, all working in concert to guarantee flawless operation.
The hydraulic valve boasts the acclaimed Yuken superposition series, which ingeniously ensures that the pipeline layoutis
astonishingly intuitive, greatly minimizing leakage and simplifying maintenance for superior efficiency.
This sophisticated system architecture features three distinct loops: the pressure adjusting loop, synchronization loop, and speed loop, each meticulously contributing to a seamless and efficient operation.
The pressure adjusting loop expertly modulates the system’s working pressure using the main overflow valve, achieving a robust working pressure of 16Mpa, ensuring consistent and reliable performance.
The synchronization loop adeptly refines the synchronized movement of the lower roller through the precise flow divider and throttle valve, enabling impeccable speed adjustments.
The speed loop skillfully orchestrates 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 testament to engineering excellence, integrating a seamless 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, it employs an AC contactor for managing both positive and reverse rotations. Harnessing the power of PLC programmable control technology, this system reduces relay usage, enhancing stability and longevity. Strategically placed buttons and indicator lights on the control table streamline the entire rolling process, ensuring every operational detail is managed with precision and efficiency.
CNC System
The NC system epitomizes reliability, featuring a rotational encoder and a high-reliability industrial controller, ensuring a steadfast and dependable control system.
CNC Function
CThis advanced NC system provides unparalleled real-time monitoring, seamless 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, ensuring synchronization precision of an impressive ±0.15mm.
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 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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