Introducing a state-of-the-art marvel in precision engineering, the Advanced Four Rollers CNC Machine Tool for Steel Plate Bending from Pully Intelligent Equipment Co., Ltd. This innovative four-roller plate rolling machine stands as a pinnacle of technological advancement, with the top roller proudly taking center stage as the key component. It serves as the primary drive, executing seamless rotational movements, while the lower roller skillfully ascends and descends, elegantly guiding the plate to ensure flawless friction alignment along the length. The two side rollers masterfully maneuver up and down at an angle, imparting the desired plastic deformation to the steel plate. Featuring an adjustable side roller, this machine effortlessly achieves both symmetric and asymmetrical bending, resulting in minimal flat ends. It surpasses traditional three-roller machines by eliminating the need for pre-bending procedures and apparatus, while also providing rough leveling of the steel plate. This indispensable tool is a cornerstone in industries such as petroleum, chemical processing, boiler manufacturing, shipbuilding, hydroelectricity, metal structures, and machinery.
Machine construction:
The core architecture of this sophisticated machine encompasses the upper roller device and driving unit, lower roller devicee, side roller apparatus, a precision hydraulic drop end system, lubrication unit, robust left and right frames, sturdy chassis, and more.
(body frame drawing)
Top Roller and Driving Assembly
The Top roller device is a masterpiece of engineering, comprising the top roller, a hydraulic drop end, fixed bearing, hydraulic motor, and bearing.
The top roller dynamically transfers torque through an ingeniously connected hydraulic motor, initiating rotation. A resilient protective steel bushing accompanies the hydraulic drop end.
movement. The hydraulic drop end is elegantly equipped with a protective steel bushing.
Lower Roller and Position Inspection Unit
The lower roller device is composed of the lower roller, oil cylinder, lower roller bearing, and a self-aligning bearing.
Each sliding bearing block, supporting the lower roller, aligns perfectly with the frame guide rail. It sits atop two precision oil cylinders, with the hydraulic system powering the smooth up-down movement of the lower roller. The main oil cylinder operates at a rated pressure of 16Mpa. Advanced sensors track the up-down distance, displaying it on a crystal-clear LCD. The hydraulic system's adjustable pressure guarantees precise hydraulic power to achieve the desired rolling force.
(hydraulic drivers drawing)
Side Roller Apparatus
The side roller device is a complex structure, intricately composed of the side roller's main oil cylinder, self-aligning bearing, and other precise bearings.
Bearing blocks adeptly support the side roller, each side harmonizing flawlessly with the frame's guide rail.
The side roller bearing block's up-down movement is expertly driven through four strategically placed oil cylinders within the robust frame. Sensors, meticulously installed on the side rollers and frame, measure the movement, with results displayed on a high-definition LCD.
To craft an exquisite cone shape, self-aligning bearings are employed for both side and lower rollers. With the lower roller level and alignment becoming inclined, fine adjustments are made to achieve a snug fit between lower and side rollers, introducing a degree of inclination relative to the horizontal plane.
3-4, Hydraulic Drop End
The hydraulic drop end device artfully integrates oil cylinders, joints, bearing blocks, and more.
The hydraulic drop end system facilitates the effortless removal of products along the roller shaft.
Upon the successful completion of hydraulic drop closure or opening, the oil cylinder's stroke is expertly reset to zero.The power source flows from a dependably reliable hydraulic station.
Balance Device
Introducing a groundbreaking balance device, crafted with a cutting-edge compact structure that guarantees supreme performance. This ingenious design excels when the tipping rack gracefully slips off the bearing face of the top roller, commencing a seamless tipping movement. As gravity elegantly pulls the top roller’s end downwards, this sophisticated balance device ensures perfect equilibrium by being strategically situated on the fixed side. This precise placement creates an optimal distance from the fixed frame, securely anchored by screws, ensuring unrivaled stability and exceptional efficiency.
(plate rolling drawing)
Hydraulic System
Discover our state-of-the-art hydraulic system, a marvel of meticulous engineering crafted from a high-precision gear pump, an advanced valve group, and auxiliary pipelines. Together, they create a seamless operation that sets the standard for excellence.
The hydraulic valve utilizes the Yuken superposition series, ensuring the pipeline layoutis
exceptionally straightforward, minimizing potential leakage, and simplifying maintenance tasks, offering unmatched efficiency and reliability.
The system architecture is comprised of three distinct loops: the pressure adjusting loop, the synchronization loop, and the speed loop. Each plays a pivotal role in contributing to harmonious and efficient operations.
The pressure adjusting loop expertly modulates the system’s working pressure through the main overflow valve, achieving a robust and powerful working pressure of 16Mpa.
The synchronization loop meticulously fine-tunes the in-phase movement of the lower roller with precision, utilizing the flow divider and throttle valve for exact speed adjustments.
The speed loop masterfully controls the descent of the frame, reset operations, and precise speed adjustments through the throttle valve.
Electric Control System
Our electric control system is equipped with an integrated electric cabinet, an advanced operation control table, and a convenient portable button box, all operating at 380V/50Hz. Featuring robust short circuit and overload protection for the main motor, it employs an AC contactor to manage positive and reverse rotations. The system utilizes sophisticated PLC programmable control technology, boasting minimal relay usage to enhance stability and longevity. With strategically positioned buttons and indicator lights on the control table, the entire rolling process is streamlined, overseeing every operational aspect with unmatched precision and control.
CNC System
The NC system is meticulously designed, featuring a rotational encoder and a high-reliability industrial controller, together forming a consistent and reliable control system of superior caliber.
CNC Function
CThis advanced NC system offers cutting-edge real-time monitoring, seamless data transmission, and reliable power-off memory throughout the entire rolling process, ensuring precision and efficiency.
The industrial control PLC is an automatic marvel, inspecting the lower position and both ends of the side roller with precision, achieving an impressive synchronization precision of ±0.15mm.
The programmable display offers real-time visibility of the lower roller and side roller end positions,
with these parameters easily configurable and set for optimal performance.
With a displacement transducer resolution of an impressive 0.10mm, the display precision achieves an extraordinary ±0.10mm.
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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