This state-of-the-art machine is a four-roller plate rolling marvel, boasting the top roller as the pivotal component, delivering precision engineering. It serves as the primary drive, executing smooth rotational movements. Simultaneously, the lower roller masterfully ascends and descends to skillfully guide the plate, ensuring friction aligns perfectly lengthwise. The two side rollers dance with elegance, moving up and down at a precise angle to induce the desired plastic deformation to the steel plate. Thanks to the adjustable side roller, this machine achieves both symmetric and asymmetrical bending, resulting in an impressively minimal flat end. It surpasses traditional three-roller machines by eliminating the need for pre-bending procedures and equipment, while offering a rough yet effective leveling of the steel plate. This makes it an invaluable asset in industries such as petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectricity, metal structures, and machinery.
Machine construction:
The core structure of this sophisticated machinery includes a robust upper roller device and driving unit, along with a lower roller device, side roller apparatus, reliable hydraulic drop end system, efficient lubrication unit, left and right frames, sturdy chassis, and more.
(body frame drawing)
top roller and driving assembly
The Top roller device features the top roller, an advanced hydraulic drop end, fixed bearing, hydraulic motor, and bearing.
The top roller effectively transfers torque through its connected hydraulic motor, initiating seamless rotation. A protective steel bushing is meticulously fitted with the hydraulic drop end.
movement. The hydraulic drop end is reinforced with a protective steel bushing, enhancing durability and safety.
lower roller and position inspection unit
The lower roller device comprises the lower roller, a high-performance oil cylinder, lower roller bearing, and a self-aligning bearing.
Each sliding bearing block that supports the lower roller is aligned perfectly with the frame guide rail. It's mounted on two oil cylinders, with the hydraulic system delivering exceptional up-down movement power for the lower roller. The main oil cylinder operates efficiently at a rated pressure of 16Mpa. Advanced sensors track the precise up-down distance, displaying it on an easy-to-read LCD. The hydraulic system's adjustable pressure guarantees precise hydraulic power to meet the specified rolling force.
(hydraulic drivers drawing)
side roller apparatus
The side roller device is intricately engineered, featuring the side roller's main oil cylinder, self-aligning bearing, and additional bearings.
Bearing blocks provide sturdy support for the side roller, ensuring each side coordinates seamlessly with the frame's guide rail.
The side roller bearing block's up-down movement is driven strategically by four oil cylinders, each placed within the frame. Sensors are installed on the side rollers and frame to measure the movement accurately, with results clearly displayed on an LCD.
To achieve a flawless cone shape, self-aligning bearings are utilized for both side and lower rollers. As the lower roller level and alignment become inclined, precise adjustments enable a perfect fit between lower and side rollers, introducing a degree of inclination relative to the horizontal.
3-4, hydraulic drop end
The hydraulic drop end device is composed of oil cylinders, reliable joints, bearing blocks, and more.
The hydraulic drop end system facilitates effortless product removal along the Roller shaft, optimizing efficiency.
Upon the completion of hydraulic drop closure or opening, the oil cylinder's stroke is meticulously reset to zero.The power source is driven by a dependable hydraulic station, ensuring continuous operation.
Balance device
The balance device showcases an inventive and compact structural design, ensuring peak performance when the tipping rack disengages from the bearing face of the top roller and begins its tipping motion. As gravity guides the descent of the top roller’s end, this advanced balance device adeptly maintains equilibrium by its strategic placement on the fixed side. This deliberate positioning creates a calculated distance from the fixed frame, securely fastened by screws to guarantee stability and operational efficiency.
(plate rolling drawing)
Hydraulic System
Crafted with precision, our state-of-the-art hydraulic system features a high-precision gear pump, an intricate valve group, and auxiliary pipelines that work together for seamless, efficient operation.
Utilizing the Yuken superposition series, the hydraulic valve ensures the pipeline arrangementis
exceptionally streamlined, minimizing leakage and simplifying maintenance tasks to deliver unmatched efficiency.
The system architecture incorporates three distinct and specialized loops: the pressure adjusting loop, synchronization loop, and speed loop, each contributing to a harmonious and well-coordinated operation.
The pressure adjusting loop skillfully modulates the system’s working pressure using the main overflow valve, achieving a robust and reliable working pressure of 16Mpa.
The synchronization loop meticulously fine-tunes the synchronized movement of the lower roller via the flow divider and throttle valve, enabling precise adjustments to speed.
The speed loop is expertly designed to control frame descent, reset operations, and speed adjustments through the throttle valve, ensuring smooth and precise functioning.
Electric Control System
The electric control system is composed of an integrated electric cabinet, a sophisticated operation control table, and a portable button box, all operating seamlessly at 380V/50Hz. It offers robust short circuit and overload protection for the main motor, utilizing an AC contactor for precise management of forward and reverse rotations. With PLC programmable control technology, it minimizes relay usage for enhanced stability and longevity. Strategically placed buttons and indicator lights on the control table streamline the entire rolling process, meticulously overseeing each operational facet with precision.
CNC System
The NC system, with its rotational encoder and high-reliability industrial controller, establishes a consistent and dependable control framework.
CNC Function
CThis sophisticated NC system offers real-time monitoring, seamless data transmission, and dependable power-off memory throughout the rolling process, ensuring uninterrupted performance.
The industrial control PLC automatically inspects the lower position and both ends of the side roller, achieving a synchronization precision of ±0.15mm, ensuring seamless operation.
The programmable display provides comprehensive real-time visibility of the lower roller and side roller end positions,
and these critical parameters can be easily configured and customized according to specific requirements.
Featuring a displacement transducer resolution of 0.10mm, the display precision attains an impressive ±0.10mm, offering unparalleled accuracy.
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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