Introducing our state-of-the-art Precision Four Roller Plate Bending Machine for Heavy Applications: This high-performance machine features an advanced four-roller design, with the top roller serving as the central drive mechanism. is the primary driving force, executing rotational movements. The lower roller performs a precise up-down motion, allowing the plate to achieve optimal friction along its length. Meanwhile, the two side rollers elegantly execute an up-down movement at an angulated trajectory, facilitating the steel plate to undergo required plastic deformation. Adjusting the side rollers enables both symmetrical and asymmetrical bending, significantly reducing flat ends in theory compared to traditional three-roller machines. This innovation not only eliminates the need for pre-bending procedures and devices but also contributes to the rough leveling of steel plates. Widely utilized across diverse sectors such as petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectricity, metal structure, and machinery industries, this machine is a game-changer.
Machine construction:
The core structure of this sophisticated machine encompasses the upper roller device, driving apparatus,e, side roller module, hydraulic drop end mechanism, lubrication system, left and right framing, robust chassis, and more.
(body frame drawing)
Top roller and driving device:
Top roller device integrates the top roller, hydraulic drop end, fixed bearing, hydraulic motor, and bearing system.
The top roller efficiently transmits torque through a connected hydraulic motor, initiating
rotational motion. Additionally, a protective steel bushing is installed with the hydraulic drop end for enhanced durability.
Lower roller and position inspection device:
The lower roller device is engineered with a lower roller, oil cylinder, bearing assembly, and self-aligning bearing for optimal performance.
The sliding bearing block at both ends, supporting the lower roller, seamlessly aligns with the frame guide rail. Positioned atop two oil cylinders, the hydraulic system delivers potent up-down movements for the lower roller. Operating at a rated pressure of 16Mpa, the up-down travel is meticulously monitored by sensors and displayed on an LCD interface. Thanks to the adjustable hydraulic system pressure, achieving the desired rolling power is effortless.
(hydraulic drivers drawing)
Side roller device:
This component comprises the main oil cylinder, self-aligning bearing, and supportive bearing structures.
The bearing block, supporting the side roller, harmonizes with the frame guide rail to ensure smooth operation.
Driven by four strategically placed oil cylinders within the frame, the side roller bearing block achieves precise up-down movements. Sensors installed on the rollers and frame meticulously track these movements, presenting data via LCD display for user convenience.
For cone shape rolling, both the side and lower rollers utilize self-aligning bearings. The lower roller maintains a level when the horizontal line transitions to a slope, allowing the rollers to snugly align through meticulous adjustments. A slight inclination exists between the horizontal line and the rollers, ensuring flawless operation.
3-4. Hydraulic drop end:
The hydraulic drop end mechanism features oil cylinders, oil cylinder joints, bearing blocks, and comprehensive bearing assemblies for robust performance.
The hydraulic drop end mechanism facilitates effortless product removal along the roller shaft.
Upon completion of the hydraulic drop's open or close action, the oil cylinder stroke is neutralized to zero, ensuring precision. The hydraulic station serves as the powerhouse, delivering requisite energy for seamless operation.
Balance device:
The balance device is designed with a compact structure. When the tipping rack slips off the bearing face of the top roller and initiates its tipping motion, the top roller will naturally descend due to gravity. To ensure the top roller maintains its level, a balance device is strategically positioned on the fixed side, with a calculated distance from the fixed frame. It is securely fastened to the frame with screws, optimizing stability and performance.
(Innovative plate rolling diagram)
Advanced Hydraulic System
Our hydraulic system is meticulously engineered, comprising a reliable gear pump, a sophisticated valve group, and supporting pipelines for seamless operation.
The hydraulic valve features the Yuken superposition hydraulic valve series, ensuring a streamlined layout
that promises simplicity, minimal leakage, and easy maintenance, enhancing operational efficiency.
The system comprises three dedicated loops: the pressure adjusting loop, synchronization loop, and speed loop for optimized performance.
The pressure adjusting loop adjusts the working pressure via the main overflow valve, maintaining a system pressure of 16Mpa for consistent operation.
The synchronization loop precisely adjusts the lower roller in-phase using a flow divider and throttle valve, allowing fine-tuning of speed for superior accuracy.
The speed loop expertly manages the frame's descent and reset, controlling speed with a throttle valve for smooth transitions.
Comprehensive Electric Control System
The sophisticated electric control system includes an electric cabinet, operation control table, and a convenient portable button box, running on 380V/50Hz power. It features short circuit and overload protection for the main motor. The AC contactor regulates positive and reverse rotation while the machine's PLC programmable control minimizes relays, ensuring stability and longevity. All essential buttons and indicator lights for the entire rolling process are ergonomically placed on the control table, facilitating control over operations and status monitoring.
CCutting-edge NC System
This system employs a rotation encoder paired with a high-reliability industrial controller, creating a robust control system for optimal performance.
CNC Functionality
CThe NC system features real-time monitoring, data transmission, and power-off memory throughout the rolling process, ensuring uninterrupted performance.
The industrial control PLC automatically inspects and controls the lower position and both ends of the side roller position, maintaining synchronization precision at an impressive ±0.15mm.
The programmable display provides real-time visualization of the lower roller position and both ends of the side roller position, with adjustable settings for fine control.
This robust system allows for precise configuration.
The displacement transducer offers a resolution of 0.10mm, with display precision reaching ±0.10mm, ensuring high accuracy.
Innovative Automatic Self-judge Function
Standard Parts Crafted by Renowned Manufacturers
| 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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