Witness the pinnacle of innovation with our High-Performance Four Rollers Rolling Machine for Precision Steel Bending—a marvel of modern engineering crafted by Pully Intelligent Equipment Co., Ltd. This machine is designed around its robust top roller, serving as the central driving force in the rolling process. It serves as the primary drive mechanism, enabling seamless rotational movement. The lower roller expertly maneuvers vertically, guiding the plate with precision, ensuring optimal lengthwise friction. Meanwhile, the side rollers perform graceful vertical movements at precise angles, crafting the desired plastic deformation in the steel plate. With its adaptable side roller, the machine excels in both symmetric and asymmetric bending, minimizing the flat end and eliminating the need for pre-bending tools. This efficiency leapfrogs the capabilities of traditional three-roller systems, offering rudimentary leveling of the steel plate. Its versatility makes it a critical asset in diverse sectors including petroleum, chemical, boiler production, shipbuilding, hydroelectric power, metal structures, and precision machinery.
Machine construction:
This sophisticated powerhouse is meticulously constructed, featuring essential components such as the upper roller device, primary driving unit, lower roller device,eside roller apparatus, a hydraulic drop end system, lubrication unit, left and right frames, and a durable chassis, among others.
(body frame drawing)
top roller and driving assembly
The Top roller device is a harmonious blend of the top roller, hydraulic drop end, fixed bearing, hydraulic motor, and bearing.
Here, the top roller transmits torque via a precisely connected hydraulic motor, setting the mechanical symphony in motion. Enveloping the hydraulic drop end is a protective steel bushing.
movement. This integral hydraulic drop end is fortified with a protective steel bushing for enhanced durability.
lower roller and position inspection unit
The lower roller device is a robust assembly of the lower roller, oil cylinder, lower roller bearing, and a self-aligning bearing.
Sliding bearing blocks adeptly support the lower roller, precisely aligned with the frame's guide rail. They rest on a pair of oil cylinders, with hydraulic power facilitating its vertical mobility. The primary oil cylinder operates efficiently at a rated pressure of 16Mpa. Precision sensors monitor the vertical traverse, displaying data on an easy-to-read LCD interface. The hydraulic system's adjustable pressure guarantees exact hydraulic input to match the required rolling force.
(hydraulic drivers drawing)
side roller apparatus
The side roller device is a masterpiece of engineering, comprising the side roller's main oil cylinder, self-aligning bearing, along with other supporting bearings.
Its bearing blocks cradle the side roller, each side seamlessly aligning with the frame's guide rail for optimal performance.
The elegantly designed side roller bearing block is vertically mobilized via four strategically arranged oil cylinders within the frame. Precision sensors on the side rollers and frame meticulously measure and display movement data on an LCD.
To sculpt an exquisite cone shape, self-aligning bearings are utilized for both side and lower rollers. With the lower roller precisely leveled and alignment inclined, meticulous adjustments ensure a snug interlocking between lower and side rollers, introducing a subtle inclination relative to the horizontal.
3-4, hydraulic drop end
The hydraulic drop end system is an elegant assembly of oil cylinders, connections, bearing blocks, and more.
The hydraulic drop end system facilitates seamless product removal along the Roller shaft, optimizing operational efficiency.
Upon completing the hydraulic drop, the oil cylinder's stroke resets to zero, readying the system for subsequent tasks.A dependable and powerful hydraulic station drives the entire system, ensuring consistent and reliable performance.
Balance device
Revolutionize your precision steel bending with our High-Performance Four Rollers Rolling Machine! Our cutting-edge balance device is crafted with an ingenious compact structure, ensuring impeccable performance. When the tipping rack elegantly slips off the bearing face of the top roller, gravity orchestrates the descent of its end, initiating the tipping movement. Fear not, for our sophisticated balance device is strategically positioned on the fixed side to maintain equilibrium. This calculated positioning, carefully distanced from the fixed frame and securely fastened by robust screws, guarantees stability and supreme efficiency.
(plate rolling drawing)
Hydraulic System
Designed for excellence, our hydraulic system features a high-precision gear pump, a state-of-the-art valve group, and auxiliary pipelines, all working in harmony for seamless operation.
Ingeniously crafted, the hydraulic valve utilizes the Yuken superposition series,ensuring
the pipeline layout is exceptionally straightforward. This design minimizes leakage and simplifies maintenance, resulting in efficiency that is truly unparalleled.
The architecture of our system is composed of three distinct loops: the pressure adjusting loop, the synchronization loop, and the speed loop, each meticulously contributing to a harmonious operation.
The pressure adjusting loop artfully modulates the system's working pressure through the main overflow valve, achieving a formidable working pressure of 16Mpa.
The synchronization loop expertly fine-tunes the in-phase movement of the lower roller using a flow divider and throttle valve, allowing for precise speed adjustments.
For masterful control, the speed loop orchestrates frame descent, reset operations, and speed adjustments via a throttle valve, enhancing operational precision.
Electric Control System
Our electric control system is a marvel of engineering, featuring an integrated electric cabinet, a sophisticated operation control table, and a portable button box operating at 380V/50Hz. It offers short circuit and overload protection for the main motor, utilizing an AC contactor for the adept management of positive and reverse rotations. Employing advanced PLC programmable control technology, this system boasts minimal relay usage, ensuring enhanced stability and remarkable longevity. With strategically placed buttons and indicator lights on the control table, the entire rolling process is streamlined and overseen with precision, making every operation a breeze.
CNC System
Our NC system is a triumph of modern engineering, designed with a rotational encoder and high-reliability industrial controller, establishing a consistent and trustworthy control system.
CNC Function
CThis sophisticated NC system offers unparalleled features like real-time monitoring, seamless data transmission, and a reliable power-off memory throughout the rolling process.
The industrial control PLC meticulously inspects the lower position and both ends of the side roller, ensuring synchronization precision that dazzles with ±0.15mm.
Our programmable display affords real-time visibility of the lower roller and side roller end positions,
allowing these parameters to be effortlessly configured and set.
Boasting a displacement transducer resolution of 0.10mm, the display precision achieves a benchmark 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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