This state-of-the-art machine is a four-roller plate rolling marvel, with the top roller as the pivotal component of its sophisticated design. It functions as the primary drive, performing smooth rotational movements. The lower roller moves up and down with precision to guide the plate, ensuring perfect friction alignment lengthwise. Meanwhile, the two side rollers operate with graceful precision, moving up and down at an angle to impart the desired plastic deformation to the steel plate. The adjustability of the side roller enables both symmetric and asymmetrical bending, minimizing the flat end and offering a superior alternative to three-roller machines by removing the need for pre-bending procedures and devices. Additionally, it provides rough leveling of the steel plate, making this machine an essential asset in a plethora of industries, including petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectricity, metal structures, and machinery.
Machine construction:
The core structure of this sophisticated machine includes the upper roller device and driving unit, lower roller device,side roller apparatus,hydraulic drop end system, a comprehensive lubrication unit, left and right frames, robust chassis, and additional components.
(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 contributing to its robust functionality.
The top roller transfers torque via a connected hydraulic motor, initiating smooth rotation. A protective steel bushing is fitted to ensure the hydraulic drop end's durability.
movement. The hydraulic drop end is protected by a steel bushing, enhancing its longevity.
Lower roller and position inspection unit
The lower roller device consists of the lower roller, a reliable oil cylinder, lower roller bearing, and a self-aligning bearing, ensuring optimal performance.
Each sliding bearing block, supporting the lower roller, aligns with the frame guide rail and is mounted on two oil cylinders, powered by a hydraulic system that enables precise up-down movement for the lower roller. Operating at a rated pressure of 16Mpa, the main oil cylinder ensures smooth functionality. Sensors track the up-down distance, displaying it accurately on an LCD screen. With adjustable pressure, the hydraulic system precisely meets the desired rolling force demands.
(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 supporting bearings.
Bearing blocks provide robust support for the side roller, each coordinating flawlessly with the frame's guide rail to ensure stability.
The side roller bearing block's upward and downward movement is facilitated by four strategically positioned oil cylinders within the frame. Sensors on the side rollers and frame measure the movement with precision, with results displayed on an LCD, ensuring accurate monitoring.
To achieve an exquisite cone shape, self-aligning bearings are used for both side and lower rollers. As the alignment of the lower roller transitions to an incline, fine adjustments allow for a snug fit between lower and side rollers, introducing an expertly calculated degree of inclination relative to the horizontal plane.
3-4, Hydraulic drop end
The hydraulic drop end device is composed of oil cylinders, joints, bearing blocks, and additional high-quality components.
The hydraulic drop end system facilitates smooth and effortless product removal along the Roller shaft, enhancing operation efficiency.
Upon completing the hydraulic drop closure or opening, the oil cylinder's stroke is expertly reset to zero, ensuring consistency.The power source is derived from a dependable hydraulic station, guaranteeing uninterrupted 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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