Introducing the Four Rollers CNC Plate Bending Machine for High-Precision Steel Work, a marvel of modern engineering. This cutting-edge apparatus boasts a four-roller system where the top roller is the linchpin, orchestrating the entire process with precision. It serves as the primary drive, deftly executing rotational movements while the lower roller, with finesse, ascends and descends to guide the plate. This ensures a longitudinal alignment through friction. The two side rollers perform a sophisticated ballet, moving up and down at an angle to induce the desired plastic deformation in the steel plate. With the adjustable side roller, this machine triumphantly achieves both symmetric and asymmetric bending, minimizing flat ends. Compared to three-roller machines, it eliminates the need for pre-bending apparatus and procedures, and offers preliminary leveling of the steel plate. Industries such as petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectricity, metal structures, and machinery deem it indispensable.
Machine construction:
The sophisticated core structure of this machine encompasses the upper roller device and driving unit, lower roller device, side roller apparatus, hydraulic drop end system, lubrication unit, left and right frames, and chassis, among other components.
(body frame drawing)
top roller and driving assembly
The Top roller device is a meticulously designed assembly that includes the top roller, a hydraulic drop end, fixed bearing, hydraulic motor, and bearing.
The hydraulic motor propels the top roller, transmitting torque for rotation. A robust steel bushing accompanies the hydraulic drop end for enhanced protection.
movement. The hydraulic drop end is fortified with a protective steel bushing.
lower roller and position inspection unit
The lower roller device is an integral part, comprising the lower roller, oil cylinder, lower roller bearing, and a self-aligning bearing.
Each sliding bearing block supporting the lower roller precisely aligns with the frame guide rail. Situated on two oil cylinders, the hydraulic system empowers the lower roller with vertical motion. Operating at a rated pressure of 16Mpa, the main oil cylinder ensures optimal power. Sensors meticulously track the up-down distance, showcasing it on an LCD. Adjustable hydraulic system pressure provides accurate power to achieve desired rolling force.
(hydraulic drivers drawing)
side roller apparatus
The side roller device is a complex arrangement of the side roller's main oil cylinder, self-aligning bearing, and auxiliary bearings.
Supporting the side roller, bearing blocks work in harmony with the frame's guide rail, ensuring smooth operations.
Four strategically positioned oil cylinders within the frame drive the up-down movement of the side roller bearing block. Sensors installed on both side rollers and frame measure the precise movement, with results conveniently displayed on an LCD.
To craft an exquisite cone shape, self-aligning bearings are skillfully utilized on both side and lower rollers. As the lower roller remains level, and alignment becomes inclined, meticulous adjustments ensure a perfect fit between lower and side rollers, achieving a subtle inclination relative to the horizontal.
3-4, hydraulic drop end
The hydraulic drop end device is comprised of oil cylinders, joints, bearing blocks, and other essential components.
The hydraulic drop end system facilitates effortless and seamless product removal along the Roller shaft.
Upon the completion of hydraulic drop closure or opening, the oil cylinder's stroke resets to zero, ensuring readiness for subsequent operations.The power source is a robust and reliable hydraulic station, designed to provide consistent performance.
Balance device
Experience unparalleled mastery with our cutting-edge balance device, ingeniously crafted to boast a compact structure that delivers optimal performance. This marvel activates its precise balance when the tipping rack gracefully slides off the bearing face of the top roller. As gravity elegantly guides the descent of the top roller’s end, our sophisticated balance device seamlessly maintains equilibrium. Strategically positioned on the fixed side, it ingeniously crafts a calculated distance from the steadfast frame, secured by screws to ensure unwavering stability and supreme efficiency.
(plate rolling drawing)
Hydraulic System
Our state-of-the-art hydraulic system is a masterpiece, meticulously assembled from a high-precision gear pump alongside a sophisticated array of valves and auxiliary pipelines, all orchestrated for seamless, fluid operation.
The hydraulic valve proudly utilizes the Yuken superposition series, masterfully ensuringthe
pipeline layout is remarkably straightforward, dramatically reducing leakage and simplifying maintenance for exceptional efficiency.
The system's architecture features three distinct and harmonious loops: a pressure adjusting loop, a synchronization loop, and a speed loop, each contributing to a symphony of seamless operation.
The pressure adjusting loop expertly modulates the system’s working pressure through the main overflow valve, achieving a formidable working pressure of 16Mpa.
The synchronization loop exquisitely tunes the in-phase movement of the lower roller via the flow divider and throttle valve, enabling precise speed adjustments with grace.
The speed loop adeptly controls the descent of the frame, reset operations, and speed adjustments through the throttle valve, ensuring fluidity and precision.
Electric Control System
Our electric control system is an integrated marvel, featuring an electric cabinet, a sophisticated operation control table, and a portable button box, all operating at 380V/50Hz. This system is fortified with short circuit and overload protection for the main motor, utilizing an AC contactor to deftly manage positive and reverse rotations. Harnessing the power of PLC programmable control technology, it boasts minimal relay usage for enhanced stability and extended longevity. Strategically placed buttons and indicator lights on the control table streamline the entire rolling process, overseeing every operational detail with meticulous precision.
CNC System
Our NC system is a paragon of design, featuring a rotational encoder and a high-reliability industrial controller, establishing a consistent and reliable control system that stands the test of time.
CNC Function
CThis sophisticated NC system offers an unparalleled experience with real-time monitoring, seamless data transmission, and a reliable power-off memory that persists throughout the rolling process, ensuring continuous excellence.
The industrial control PLC diligently inspects the lower position and both ends of the side roller, maintaining synchronization precision with an impressive accuracy of ±0.15mm.
The programmable display grants real-time visibility of the lower roller and side roller end positions, offering an intuitive interface for configuration and settings.
These parameters are effortlessly configurable, allowing for tailored precision with ease.
The displacement transducer, boasting a resolution of 0.10mm, ensures the display precision achieves an impressive accuracy of ±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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