Discover the pinnacle of innovation with our state-of-the-art Hydraulic Four Roll Machine for Quality Steel Plate Forming. This engineering marvel is equipped with a sophisticated four-roller plate rolling system, where the prominent top roller assumes center stage in its crucial function. It serves as the guiding force, the primary drive that orchestrates rotational dynamics with finesse. The lower roller, an ingenuity in motion, elegantly transitions up and down, ensuring the plate's seamless alignment through friction. Witness the two side rollers' graceful ascent and descent at a calculated angle, imparting exquisite plastic deformation to steel plates. Thanks to the side roller's adjustable design, this machine effortlessly executes both symmetric and asymmetrical bending, boasting a minimal flat end. It triumphs over traditional three-roller machines by eliminating elaborate pre-bending procedures and apparatus, while simultaneously offering rough leveling of steel plates. Indispensable across industries such as petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectricity, metal structures, and machinery, it stands as a testament to engineering excellence.
Machine construction:
The intricate core of this sophisticated machine encompasses the upper roller device and driving unit, lower roller device, a meticulously crafted side roller apparatus, a hydraulic drop end mechanism, a lubrication unit, complemented by the sturdy left and right frames, chassis, and additional components.
(body frame drawing)
top roller and driving assembly
The Top roller device is a masterclass of engineering precision, comprising the pivotal top roller, a hydraulic drop end, fixed bearing, hydraulic motor, and resilient bearing.
The top roller, through its partnership with a hydraulic motor, seamlessly transfers torque to initiate rotation. A protective steel bushing accompanies the hydraulic drop end, enhancing the durability and efficiency of movement.
movement. The hydraulic drop end comes fortified with a protective steel bushing for enhanced reliability.
lower roller and position inspection unit
The lower roller device is an epitome of precision, comprising the pivotal lower roller, oil cylinder, lower roller bearing, and a self-aligning bearing for optimal performance.
Each sliding bearing block, steadfastly supporting the lower roller, aligns with the frame's guide rail. Mounted on dual oil cylinders, the hydraulic system provides formidable power for vertical movement of the lower roller. Operating at a robust rated pressure of 16Mpa, sensors meticulously track the lower roller's position, displaying data on an LCD screen. The adjustable pressure system ensures precise hydraulic power tailored to meet specific rolling force requirements.
(hydraulic drivers drawing)
side roller apparatus
The side roller device is a sophisticated assembly consisting of the main oil cylinder, self-aligning bearing, and additional bearings. Each component is crafted for seamless integration.
Strategically mounted bearing blocks provide unwavering support for the side roller, with each side synchronizing effortlessly with the frame's guide rail.
The upward and downward mobility of the side roller bearing block is powered by four strategically positioned oil cylinders within the frame. Sensors meticulously measure movements, with results elegantly displayed on an LCD screen.
For the creation of an exquisite cone shape, self-aligning bearings are employed for both the side and lower rollers. As the lower roller's alignment becomes inclined, fine adjustments ensure a precise fit, introducing a subtle inclination relative to the horizontal plane.
3-4, hydraulic drop end
The hydraulic drop end device is a meticulously engineered assembly comprising oil cylinders, joints, bearing blocks, and additional elements.
The hydraulic drop end system facilitates the effortless removal of finished products along the Roller shaft, streamlining production processes.
Upon the consummation of hydraulic drop closure or opening, the oil cylinder's stroke is seamlessly reset to zero, ensuring operational precision.The power source, a hallmark of reliability, emanates from a robust hydraulic station.
Balance device
Our state-of-the-art balance device is a marvel of modern engineering, meticulously crafted with an innovative, compact structure that ensures unmatched performance. As the tipping rack elegantly disengages from the bearing face of the top roller and begins its tipping movement, this sophisticated balance device is activated, stepping into its pivotal role. Gravity naturally draws the top roller's end downward, yet this expertly designed apparatus maintains perfect equilibrium. It's strategically positioned on the fixed side, at a precisely calculated distance from the fixed frame, and securely anchored by high-quality screws, ensuring stability and outstanding operational efficiency.
(plate rolling drawing)
Hydraulic System
Our cutting-edge hydraulic system stands as a masterpiece of engineering, meticulously assembled from a high-precision gear pump, an intricate valve group, and premium auxiliary pipelines, all configured to ensure flawless operation.
The hydraulic valve incorporates the renowned Yuken superposition series, which skillfully ensures that the pipeline layoutis
astonishingly intuitive, significantly curtailing leakage and simplifying maintenance for exceptional operational 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 through the main overflow valve, achieving a formidable working pressure of 16Mpa, ensuring consistent and reliable performance.
The synchronization loop deftly fine-tunes the synchronized movement of the lower roller through a precise flow divider and throttle valve, allowing for impeccable speed adjustments.
The speed loop artfully manages the descent of the frame, reset operations, and speed calibrations with precision, utilizing the adept control of the throttle valve.
Electric Control System
Our electric control system is a marvel of advanced engineering, featuring a seamlessly integrated electric cabinet, an advanced operation control table, and a versatile portable button box, all operating 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. With 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, forming a steadfast and dependable control system.
CNC Function
CThis advanced NC system offers unparalleled real-time monitoring, effortless data transmission, and reliable power-off memory throughout the entire rolling process, ensuring both 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 offers comprehensive real-time visibility of the lower roller and side roller end positions,
and these parameters can be configured and set effortlessly to suit precise requirements.
With an extraordinary displacement transducer resolution of 0.10mm, the display precision achieves 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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