This state-of-the-art machine is a true marvel of engineering, a four-roller plate rolling maestro, with the top roller as the pivotal component. It serves as the primary drive, executing smooth rotational movements while the lower roller glides up and down, skillfully guiding the plate with precision, ensuring friction aligns lengthwise. The two side rollers artfully maneuver up and down at an angle, imparting the desired plastic deformation to the steel plate. The marvel of the adjustable side roller enables both symmetric and asymmetrical bending, producing an exceptionally minimal flat end, surpassing three-roller machines by negating the necessity for pre-bending procedures and equipment. Additionally, it offers rough leveling of the steel plate, making it indispensable in sectors such as petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectricity, metal structures, and machinery.
Machine construction:
The sophisticated core structure of this machine encompasses the upper roller device and driving unit, lower roller devicee, side roller apparatus, hydraulic drop end system, lubrication unit, left and right frames, chassis, and more.
(body frame drawing)
top roller and driving assembly
The Top roller device features the top roller, a hydraulic drop end, fixed bearing, hydraulic motor, and bearing.
The top roller efficiently transfers torque through a linked hydraulic motor, setting rotation in motion. A protective steel bushing is securely fitted with the hydraulic drop end.
movement. The hydraulic drop end comes equipped with a protective steel bushing.
lower roller and position inspection unit
The lower roller device is composed of the lower roller, oil cylinder, lower roller bearing, and a self-aligning bearing.
Every sliding bearing block, which supports the lower roller, harmoniously aligns with the frame guide rail. It is mounted on two oil cylinders, powered by the hydraulic system for up-down movement. The main oil cylinder operates at a rated pressure of 16Mpa. Sensors meticulously track the up-down movement, displaying the data on an LCD screen. The hydraulic system's adjustable pressure ensures precise hydraulic power to meet the desired rolling force.
(hydraulic drivers drawing)
side roller apparatus
The side roller device is intricately composed of the side roller's main oil cylinder, self-aligning bearing, and additional bearings.
Bearing blocks provide robust support to the side roller, with each side seamlessly coordinating with the frame's guide rail.
The up-down movement of the side roller bearing block is powered by four strategically placed oil cylinders within the frame. Sensors on the side rollers and frame measure the movement, displaying the results on an LCD screen.
To craft an exquisite cone shape, self-aligning bearings are utilized for both the side and lower rollers. With the lower roller level and alignment becoming inclined, meticulous adjustments allow a perfect fit between the lower and side rollers, introducing a degree of inclination relative to the horizontal.
3-4, hydraulic drop end
The hydraulic drop end device includes oil cylinders, joints, bearing blocks, and more.
The hydraulic drop end system facilitates the effortless removal of products along the Roller shaft.
Upon the completion of hydraulic drop closure or opening, the oil cylinder's stroke resets to zero.The power source stems from a reliable hydraulic station, ensuring consistent performance.
Balance device
Discover the pinnacle of engineering with our innovative balance device. It's meticulously crafted for a compact and efficient structure, guaranteeing superior performance. When the tipping rack gracefully slips off the bearing face of the top roller and begins to tip, gravity elegantly lowers the top roller's end. Our balance device, strategically poised on the fixed side, maintains perfect equilibrium. Its calculated distance from the fixed frame, firmly secured by screws, ensures unparalleled stability and efficiency.
(plate rolling drawing)
Hydraulic System
Our state-of-the-art hydraulic system is an exquisite blend of high-precision craftsmanship. It features a precisely engineered gear pump, an intricate valve group, and auxiliary pipelines, all coming together for seamless and flawless operation.
The hydraulic valve uses the renowned Yuken superposition series, ensuring the pipeline layoutis
extraordinarily straightforward. This design minimizes leakage and simplifies maintenance, delivering efficiency that is second to none.
Our sophisticated system architecture includes three distinct and vital loops: the pressure adjusting loop, the synchronization loop, and the speed loop, all working in harmony for smooth operation.
The pressure adjusting loop skillfully modulates the system’s working pressure through the main overflow valve, achieving a robust and reliable working pressure of 16Mpa.
The synchronization loop delicately fine-tunes the synchronous movement of the lower roller using the flow divider and throttle valve, enabling precise speed control.
The expertly designed speed loop manages frame descent, reset operations, and speed adjustments, all through the throttle valve.
Electric Control System
Our electric control system epitomizes sophistication with an integrated electric cabinet, a highly advanced operation control table, and a portable button box, operating seamlessly at 380V/50Hz. It features short circuit and overload protection for the main motor, utilizing an AC contactor for controlling both positive and reverse rotations. With PLC programmable control technology, the system boasts reduced relay usage, ensuring enhanced stability and longevity. Strategically positioned buttons and indicator lights on the control table streamline the rolling process, overseeing every operational detail with precision.
CNC System
Our NC system is designed with exceptional reliability, incorporating a rotational encoder and a high-reliability industrial controller to establish a consistent and dependable control system.
CNC Function
CThis sophisticated NC system ensures real-time monitoring, seamless data transmission, and reliable power-off memory throughout the entire rolling process.
The industrial control PLC meticulously inspects the lower position and both ends of the side roller, guaranteeing a synchronization precision of ±0.15mm.
A programmable display provides real-time visibility of the lower roller and side roller end positions,
with these parameters easily configurable and set to your requirements.
With a displacement transducer resolution of 0.10mm, the display precision is remarkably accurate at ±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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