Introducing our cutting-edge four-roller plate rolling machine, a marvel of engineering that excels in shaping heavy steel plates with precision and ease. The heart of this machine is the top roller, a critical component that serves as the main drive, rotating to deliver powerful and efficient movement. This innovative design is the pinnacle of modern engineering, where the lower roller performs an up-down motion to ensure seamless friction along the length of the plate. Meanwhile, the two side rollers, set at an angle to the straight line, move up and down to masterfully induce the desired plastic deformation in the steel plate. By adjusting the side roller, the machine achieves both symmetric and asymmetric bending, minimizing the flat end length in theory. This feature stands out when compared to traditional three-roller machines, eliminating the need for pre-bending procedures and devices while enabling rough leveling of the steel plate. It's the ideal choice for industries such as petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectricity, and structural metalworks, where precision and efficiency are paramount.
Crafted with precision, the machine flaunts a robust construction:
The cornerstone of this engineering marvel lies in its main body structure, meticulously crafted with an upper roller device, a driving system, and a lower roller device,each part expertly integrated to perform seamlessly.It also includes a side roller device, a hydraulic drop end mechanism, lubrication system, robust left and right frames, and a sturdy chassis, among others, all working in harmony to deliver unparalleled performance.
(Detailed body frame illustration available)
The advanced top roller and driving mechanism:
At the core of this system lies the top roller device, an assembly of the top roller, hydraulic drop end, fixed bearing, hydraulic motor, and bearings, each component engineered to perfection.
The top roller is driven by a hydraulic motor, seamlessly transmitting torque through its connection, ensuring consistent and reliable rotation.
For added durability, the hydraulic drop end is fortified with a protective steel bushing, safeguarding its longevity and performance.
The intelligent lower roller and position inspection system:
This sophisticated lower roller device comprises a lower roller, oil cylinder, lower roller bearings, and self-aligning bearings, all synchronized to perform impeccably.
Sliding bearing blocks supporting the lower roller align perfectly with the frame guide rail. Powered by the hydraulic system, the lower roller's up-down movement is both smooth and precise, with a rated pressure of 16Mpa for the main oil cylinder. An LCD display showcases the up-down distance, facilitated by sensors positioned on the lower roller and frame. The hydraulic system's adjustable pressure ensures the machine meets specific rolling power requirements effortlessly.
(Illustrative hydraulic drivers diagram available)
Side roller device: The epitome of precision engineering,
This comprehensive side roller device includes the main oil cylinder, self-aligning bearings, and standard bearings, each contributing to the smooth operational excellence.
The bearing block supports the side roller with precision, coordinating seamlessly with the frame guide rail.
Four strategically placed oil cylinders within the frames drive the side roller bearing block, enabling precise up-down movements. Sensors ensure accuracy by continuously inspecting the distance, with real-time data displayed on an LCD.
For rolling cone shapes, a self-aligning bearing is deployed in both the side and lower rollers. This allows for fine-tuned adjustments, ensuring the rollers close tightly when needed, even as the horizontal line becomes inclined.
Hydraulic drop end: A seamless addition to the rolling process,
Comprising an oil cylinder, joint, and bearing block, this reliable hydraulic drop end device enhances,
The functionality, allowing easy extraction of the finished product along the roller shaft.
Upon completing the closing or opening, the hydraulic drop ensures the oil cylinder stroke returns to zero, ready for the next task. With power sourced from a dedicated hydraulic station, operations are smooth and uninterrupted.
An advanced balance device ensures stability and precision in operation, maintaining optimal performance throughout the machine's usage.
Our balance device features a streamlined, compact structure. When the tipping rack detaches from the bearing face of the top roller and initiates its tipping movement, the top roller naturally descends due to gravity's pull. To maintain a perfectly horizontal position for the top roller, we have strategically installed the balance device on the fixed side—creating a beneficial distance between the fixed frame and the balance device. This robust setup is securely fastened to the frame with screws.
(plate rolling drawing)
Hydraulic system
Our advanced hydraulic system consists of a high-performance gear pump, a meticulously engineered valve group, and expertly assembled assistant pipelines.
Utilizing the Yuken superposition hydraulic valve series, our system's pipeline layout out
is innovatively designed for simplicity, minimal leakage, and effortless maintenance.
The system is expertly constructed with three integral loops: a pressure adjusting loop, a synchronization loop, and a speed loop.
Within the pressure adjusting loop, the system's working pressure is fine-tuned via the main overflow valve—operating efficiently at a system pressure of 16Mpa.
The synchronization loop offers impeccable control, allowing the lower roller to move up and down in perfect harmony, facilitated by a precision flow divider valve and throttle valve, which enables delicate speed adjustments.
The speed loop is dedicated to controlling the frames' descent and reset actions, with precision speed adjustments managed through an advanced throttle valve.
Electric control system
Our electric control system is a sophisticated ensemble composed of an electric cabinet, an intuitive operation control table, and a versatile portable button box. Powered at 380V/50Hz, it includes a main switch equipped with short circuit protection and overload protection for the main motor. The system's seamless positive and reverse rotations are governed by an AC contactor, while the integration of a PLC programmable control ensures minimal relay usage, exceptional stability, and an impressive lifespan. All necessary buttons and indicator lights to oversee the entire rolling process are conveniently located on the control table, facilitating full control over operations and working conditions.
CNC system
Our NC system employs a precision rotation encoder synced with a highly reliable industrial controller, culminating in a control system that boasts remarkable stability and performance.
CNC function
COur NC system features real-time monitoring, efficient data transfer, and power-off memory capabilities throughout the rolling process, ensuring seamless operations.
With our industry-leading PLC, the system automatically inspects the lower position and the positions at both ends of the side rollers, maintaining synchronization precision within an impressive ±0.15mm.
The programmable display provides real-time insights into the lower roller position and both ends of the side roller positions, with fully adjustable settings.
position and it can be set.
With a displacement transducer resolution of 0.10mm, our display provides precision accuracy of ±0.10mm, ensuring unparalleled measurement clarity.
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 
){kind=link}