Introducing the cutting-edge four-roller plate rolling machine, a true marvel for steel plates. This state-of-the-art equipment is designed with the top roller as its pivotal component, ensuring superior performance and precision. It serves as the main drive, orchestrating seamless rotational movements. The lower roller elegantly moves up and down, expertly guiding the plate to ensure perfect friction alignment along its length. The two side rollers, with their graceful up-and-down angular movements, impart the necessary plastic deformation to the steel plate. This machine's adjustable side roller allows for both symmetric and asymmetrical bending, minimizing the flat end and eliminating pre-bending needs. It offers rough leveling of steel plates, making it superior to three-roller machines. Ideal for industries like petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectricity, metal structures, and machinery, this machine is indispensable.
Machine construction:
At the heart of this sophisticated machine lies a robust structure comprising the upper roller device and driving unit, lower roller device, side roller apparatus, hydraulic drop end system, lubrication unit, left and right frames, and a sturdy chassis.
(body frame drawing)
top roller and driving assembly
The Top roller device is a masterful assembly of the top roller, hydraulic drop end, fixed bearing, hydraulic motor, and bearing.
The top roller generates torque via a connected hydraulic motor, setting the rotation in motion. A protective steel bushing is elegantly paired with the hydraulic drop end.
movement. This hydraulic drop end comes with a protective steel bushing, ensuring seamless operation.
lower roller and position inspection unit
The lower roller device is comprised of the lower roller, oil cylinder, lower roller bearing, and self-aligning bearing.
Strategically positioned sliding bearing blocks support the lower roller, aligning perfectly with the frame guide rail. Mounted on two oil cylinders, the hydraulic system powers the up-down movement of the lower roller. The main oil cylinder operates at an impressive 16Mpa rated pressure. Sensors track and display the up-down distance on an LCD, while the adjustable hydraulic pressure ensures precise force for desired rolling outcomes.
(hydraulic drivers drawing)
side roller apparatus
The side roller device is intricately designed with the side roller's main oil cylinder, self-aligning bearing, and additional bearings.
Bearing blocks lend robust support to the side roller, each side harmonizing effortlessly with the frame's guide rail.
Movement of the side roller bearing block is orchestrated through four expertly positioned oil cylinders within the frame. Sensors on the side rollers and frame capture movement data, with results displayed clearly on an LCD.
To craft an exquisite cone shape, self-aligning bearings are utilized for both side and lower rollers. Fine adjustments allow for a snug fit and an inclined alignment of lower and side rollers relative to the horizontal plane.
3-4, hydraulic drop end
The hydraulic drop end device is composed of oil cylinders, joints, and bearing blocks, among other elements.
The hydraulic drop end system enables effortless removal of products along the Roller shaft, enhancing operational efficiency.
Upon completing hydraulic drop operations, the oil cylinder stroke automatically resets to zero, ensuring readiness for the next task.This powerful system is driven by a reliable hydraulic station, ensuring consistent performance.
Balance device
This balance device is a marvel of engineering, boasting an innovative, compact structure, crafted to deliver unparalleled performance. When the tipping rack gracefully slips off the bearing face of the top roller, instigating a tipping movement, our sophisticated balance device springs into action. Harnessing the force of gravity as the top roller's end descends, this intelligent mechanism maintains flawless equilibrium by positioning itself strategically on the fixed side. This thoughtful placement ensures a calculated distance from the fixed frame, where it is securely anchored with screws, guaranteeing stability and allowing for a seamless, efficient operation.
(plate rolling drawing)
Hydraulic System
Our advanced hydraulic system is a masterpiece of meticulous craftsmanship, featuring a high-precision gear pump, a sophisticated valve group, and auxiliary pipelines, all working in unison to deliver seamless and efficient operation.
With the hydraulic valve utilizing the Yuken superposition series, the pipeline layoutis
exceptionally straightforward, which remarkably reduces leakage and simplifies maintenance, ensuring unparalleled efficiency and reliability.
The system's architecture is composed of three distinct loops: a pressure adjusting loop, a synchronization loop, and a speed loop, each contributing to a harmonious operation that works with precision and coordination.
The pressure adjusting loop masterfully regulates the system’s working pressure through the main overflow valve, achieving a robust and consistent working pressure of 16Mpa.
The synchronization loop fine-tunes the in-phase movement of the lower roller through carefully calibrated flow dividers and throttle valves, enabling precise control over speed and ensuring exacting accuracy in operation.
The speed loop expertly orchestrates the descent and reset operations of the frame, as well as the speed adjustments through the throttle valve, ensuring every motion is perfectly timed and executed.
Electric Control System
Our electric control system is a pinnacle of sophistication, featuring an integrated electric cabinet, a finely tuned operation control table, and a portable button box all operating at 380V/50Hz. This system is designed with safety at its core, boasting short circuit and overload protection for the main motor. Utilizing an AC contactor for managing both positive and reverse rotations, it leverages advanced PLC programmable control technology to minimize reliance on relays, enhancing both stability and longevity. The control table is strategically equipped with buttons and indicator lights, streamlining the entire rolling process while ensuring precision and control over every operational aspect.
CNC System
This NC system is crafted with precision and reliability in mind, featuring a rotational encoder and a high-reliability industrial controller, together establishing a consistent and trustworthy control system.
CNC Function
CThis sophisticated NC system offers real-time monitoring capabilities, seamless data transmission, and reliable power-off memory, ensuring that the rolling process is uninterrupted and flawlessly executed.
With the industrial control PLC, the system automatically inspects the lower position and both ends of the side roller, ensuring a synchronization precision of ±0.15mm, a testament to its exacting standards.
The programmable display offers real-time visibility of the positions of the lower roller and side roller ends,
and these parameters can be effortlessly configured and set to meet specific requirements.
With a displacement transducer resolution of 0.10mm, the display precision reaches a remarkable ±0.10mm, providing a level of accuracy that is truly impressive.
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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