Introducing our state-of-the-art four-roller plate rolling machine where the top roller reigns supreme. It stands as the primary driving force, rotating with precision while the lower roller elegantly ascends and descends, creating friction along the length. Meanwhile, the two side rollers perform a synchronized up-and-down dance at an angle, bestowing the steel plate with the exact plastic deformation required. With the adjustable side rollers, achieve both symmetric and asymmetrical bending with ease. Comparing this to the three-roller plate rolling machine, the flat end reduction is significant, minimizing pre-bending needs and even doing away with the pre-bending device. Additionally, it delivers a rough leveling of the steel plate. Widely embraced across diverse industries such as petroleum, chemical, boiler, shipbuilding, hydroelectricity, metal structures, and machinery, it is the epitome of versatility.
Machine construction: An Overview
The meticulously engineered main body structure consists of a suite of components including the upper roller and driving mechanism, lower roller device, side roller system, a hydraulic drop end, and advanced lubrication mechanisms, all housed within a robust left and right frame, seated firmly on a sturdy chassis.
(View body frame illustration)
The top roller and its driving device form the heart of the machine.
The Top roller is an assembly of precision-engineered components including the top roller itself, a hydraulic drop end, fixed bearings, a hydraulic motor, and bearings, ensuring smooth operation.
As the top roller receives torque via the hydraulic motor connection, it smoothly transitions into
a rotational motion. Additionally, the hydraulic drop end, fortified with a protective steel bushing, adds an extra layer of safety.
The Lower Roller and Position Inspection Marvel
Comprising lower roller, oil cylinder, and bearings, the lower roller device is a testament to engineering brilliance.
Flanked by sliding bearing blocks that seamlessly align with the frame guide rail, it is powered by two oil cylinders. The hydraulic system, operating at a rated pressure of 16Mpa, enables effortless up-down movement. Precision is maintained with a sensor displaying movements on an LCD, allowing for adjustable hydraulic power tailored to your rolling requirements.
(Explore the hydraulic drivers illustration)
Unveiling the Side Roller Device
Composed of a main oil cylinder, self-aligning bearings, and support bearings, the side roller device is engineered for excellence.
The support bearing block, assisting the side roller, aligns effortlessly with the frame guide rail.
This device facilitates the side roller bearing block's fluid up-and-down movement through four oil cylinders, strategically embedded within two frames. Sensor technology accurately measures movement, displayed on an LCD for real-time monitoring.
To craft cone shapes, both the side and lower rollers are equipped with self-aligning bearings, ensuring tight closure and fine-tuned adjustments. A slight inclination between the horizontal line and the rollers allows for precise tailoring.
3-4. The Hydraulic Drop End Device
This innovative device comprises an oil cylinder, joint, bearing block, and oil cylinder bearings, ensuring seamless operation.
The ingenious hydraulic drop end system simplifies the removal process of finished products along the roller shaft.
Post-operation, the hydraulic cylinder's stroke resets to zero, driven by power from the hydraulic station. The core power is derived from a robust hydraulic station.
Marvel at the Balance Device
The balance device of the Robust Four Rollers Steel Plate Rolling Machine for Industry exhibits a masterful compact design. When the tipping rack slips off the bearing face of the top roller, causing a tipping motion, gravity will naturally lower one end of the top roller. To counter this and maintain perfect level alignment, the balance device is strategically mounted on the fixed side—positioned outside the fixed side frame at a calculated distance. This precision-engineered component is securely affixed to the frame using high-grade screws, ensuring stability and optimal performance.
(plate rolling drawing)
Hydraulic System
The hydraulic system is an intricate assembly composed of a high-performance gear pump, a meticulously designed valve group, and expertly configured assistant pipelines.
The hydraulic valve innovatively utilizes the Yuken superposition hydraulic valve series, ensuring seamless performance. The pipeline lay out
is engineered for simplicity, minimal leakage, and ease of maintenance.
This hydraulic marvel operates through three sophisticated loops: the pressure adjusting loop, the synchronization loop, and the speed loop, each performing critical roles in the machine’s operation.
The pressure adjusting loop fine-tunes the system's working pressure via the main overflow valve, maintaining an optimal system pressure of 16Mpa.
The synchronization loop expertly manages the in-phase motion of the lower roller, adjusting up and down with precision, utilizing a flow divider valve and throttle valve for precise speed adjustments.
The speed loop adeptly controls the frames' descent and reset, fine-tuning speed via the throttle valve for impeccable operation.
Electric Control System
The electric control system is a sophisticated assembly featuring an electric cabinet, an intuitive operation control table, and a portable button box. Powered at 380V/50Hz, it boasts a main switch with short circuit and main motor overload protection. Rotation control, both forward and reverse, is deftly managed by an AC contactor. The system leverages cutting-edge PLC programmable control, minimizing relay usage for superior stability and extended operational life. A comprehensive array of buttons and indicator lights adorn the control table, empowering operators to oversee the entire rolling process and working status with ease and precision.
CNC System
This NC system incorporates a rotation encoder paired with a highly reliable industrial controller, establishing a control system that boasts unrivaled stability and performance.
CNC Function
CThe NC system ensures real-time monitoring, seamless data transfer, and power-off memory throughout the rolling process, safeguarding performance and precision.
The industry control PLC automatically inspects the lower position and both ends of the side roller position. This automatic control guarantees synchronization precision within ±0.15mm, ensuring flawless alignment.
A programmable display provides real-time insights into the lower roller position and both ends of the side roller position, allowing users to set and adjust with unparalleled accuracy.
position and it can be set with precision.
The displacement transducer offers a resolution of 0.10mm, with a display precision of ±0.10mm, ensuring high-accuracy readings and adjustments.
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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