Introducing the sophisticated four-roller plate rolling machine, where the top roller takes center stage in delivering unmatched precision. serving as the primary drive, executing rotational movements with finesse. The lower roller elevates and descends, ensuring the plate gains the necessary friction along its length. Meanwhile, the twin side rollers gracefully move up and down at an angle to the straight line, which induces the required plastic deformation in steel plates. This advanced adjustment of side rollers facilitates both symmetric and asymmetric bending, minimizing the flat end theoretically. When compared to a three-roller machine, it significantly reduces the need for pre-bending processes and devices, while simultaneously offering rough leveling capabilities. This machine finds its versatile applications extensively across industries such as petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectric power, metal structures, and machinery.
Machine Construction:
The core structure of this machine integrates an upper roller device and a driving module, complemented with a lower roller device,sideroller device, hydraulic drop-end mechanism, lubrication system, left and right frames, chassis, and more.
(Refer to body frame illustration)
Top Roller and Driving Device
The Top roller assembly comprises the top roller, hydraulic drop-end feature, fixed bearings, hydraulic motor, and bearing components.
Torque is seamlessly transmitted via the connecting hydraulic motor, enabling the top roller's rotation.
The hydraulic drop-end is fortified with a protective steel bushing for enhanced durability.
Lower Roller and Position Inspection Device
The lower roller configuration includes the lower roller itself, an oil cylinder, lower roller bearings, and self-aligning bearings.
The sliding bearing block on both sides, which supports the lower roller, aligns with the frame guide rail. Its underside is secured by two oil cylinders, powered by the hydraulic system for vertical movement. The main oil cylinder operates at a rated pressure of 16Mpa. The movement range is monitored by sensors attached to the lower roller and frame, with real-time display on an LCD. The adjustable hydraulic system pressure allows easy customization of the hydraulic power to meet specific rolling requirements.
(See hydraulic drivers illustration)
Side Roller Device
This mechanism includes the primary oil cylinder of the side roller, self-aligning bearings, and additional bearings.
The bearing block supports the side roller, with both sides coordinating with the frame guide rail for stability.
Four oil cylinders, nestled within the two frames, drive the side roller bearing block's vertical movement. The up and down motion of the side rollers is tracked by sensors mounted on the side roller and frame, with visual feedback provided on an LCD.
When creating a cone shape, self-aligning bearings are employed for both the side and lower rollers. The lower roller is maintained at level, and any horizontal line inclination transforms into a slope. The lower and side rollers can then be finely adjusted for a tight fit, with a slight angle between the horizontal line and the rollers.
3-4, Hydraulic Drop End
The hydraulic drop-end device incorporates an oil cylinder, cylinder joint, bearing block, and cylinder bearing, among others.
The hydraulic drop-end system enables easy product removal along the roller shaft. Once the hydraulic drop cycle completes its closing or opening, the oil cylinder’s stroke is reset to zero.
Power is supplied by the hydraulic station, ensuring smooth and efficient operations. Equipped with a Balance Device,
this machine offers stability and precision in all tasks.
Introducing our advanced balance device: engineered with a compact architecture, it ensures stability and precision. When the tipping rack moves, causing the top roller to descend due to gravity, our balance device effortlessly maintains a level top roller. Strategically positioned on the fixed side, with a calculated distance from the fixed frame, it is robustly secured with screws for durability and seamless operation.
(plate rolling drawing)
Hydraulic System
The Hydraulic System is a sophisticated assembly comprising of a gear pump, a meticulously configured valve group, and an array of auxiliary pipelines, all working in harmony.
Our hydraulic valve system incorporates the renowned Yuken superposition hydraulic valve series, ensuring unparalleled performance. Layout
is ingeniously simple, reducing the chance of leaks and making maintenance straightforward and efficient.
This advanced system is comprised of three pivotal loops: Pressure Adjusting, Synchronization, and Speed Control, optimizing performance.
The Pressure Adjusting Loop expertly modulates system pressure via a main overflow valve, maintaining an ideal working pressure of 16Mpa.
The Synchronization Loop allows precise in-phase adjustment of the lower roller through a flow divider valve. The throttle valve offers meticulous control over speed, both ascending and descending.
Our Speed Loop adeptly controls frame descent and reset operations, finely tuning speed via the throttle valve for precision engineering.
Electric Control System
Our Electric Control System is an intricate ensemble featuring an electric cabinet, a user-friendly operation control table, and a versatile portable button box. Powered at 380V/50Hz, it includes a main switch with robust short circuit and over-loading protections for the main motor. Precision control over rotation is achieved via AC contactors, while an advanced PLC programmable system ensures minimal relay usage, stability, and longevity. All operation controls and status indicators are conveniently located on the control table, allowing for comprehensive management of the entire rolling process.
CNC System
Our NC system employs a rotation encoder paired with a high-reliability industrial controller, forming a control system renowned for its stable performance and reliability.
CNC Function
CThe NC system offers real-time monitoring, seamless data transmission, and memory retention even during power outages, ensuring continuous and efficient rolling processes.
The industry control PLC automatically inspects and controls the lower and side roller positions with precision, ensuring synchronization accuracy of ±0.15mm.
Our programmable display provides real-time updates on the lower roller and side roller positions, with customizable settings for precision control.
Positioning can be accurately set, ensuring precise control over the manufacturing process.
The displacement transducer boasts a resolution of 0.10mm, with a display precision of ±0.10mm, offering unmatched accuracy.
Automatic Self-Assessment Function
Expert Manufacturer of 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}