Introducing our advanced four-roller plate rolling machine: a top-tier solution in steel plate shaping, where the top roller takes charge of the main drive, ensuring seamless rotational movement. is the central mechanism driving precision. The lower roller executes vertical movements to align the steel plate along its length, while the side rollers, positioned at strategic angles, facilitate the necessary plastic deformation. By adjusting the side rollers, both symmetric and asymmetric bending is effortlessly achieved, significantly reducing theoretical flat ends compared to traditional three-roller machines. This design innovation eliminates the need for separate pre-bending processes and devices, and even allows for rough leveling of steel plates. Widely utilized across petroleum, chemical, boiler manufacturing, shipbuilding, hydroelectricity, metal structure, and machinery industries, our machine epitomizes versatility and efficiency.
Machine construction:
The machine's robust body structure is meticulously crafted, featuring an upper roller device, driving device, and a lower roller device,e, along with a side roller device, hydraulic drop end mechanism, lubrication system, and a chassis supported by left and right frames, all working in unison.
(body frame drawing)
Top roller and driving device
Top roller device comprises a top roller, hydraulic drop end, fixed bearing, hydraulic motor, and a robust bearing assembly.
The top roller engages in rotational movement, driven by a hydraulic motor connected via torque transmission, while safeguarded by a protective steel bushing.
rotation movement. The hydraulic drop end comes equipped with a protective steel bushing for enhanced durability and safety.
Lower roller and position inspection device
The lower roller device combines a lower roller, oil cylinder, and bearing systems, including a self-aligning bearing, ensuring steadfast performance.
Sliding bearing blocks align with the frame's guide rails, supported by dual oil cylinders powered by the hydraulic system, facilitating precise vertical movements. The main oil cylinder operates at a rated pressure of 16Mpa, with movement distances monitored by sensors and displayed on an LCD for accuracy. The hydraulic system's adjustable pressure feature ensures that the required rolling power is easily attainable, tailored to specific needs.
(hydraulic drivers drawing)
Side roller device
Crafted with precision, the side roller device includes a main oil cylinder, self-aligning bearing, and robust bearings, ensuring seamless operation.
The bearing block supports the side roller, with both sides synchronizing with the frame guide rail for optimal alignment.
The side roller's vertical movement is driven by four strategically placed oil cylinders within the frame, with movement distances calculated by sensors and shown on an intuitive LCD display.
For conical rolling, self-aligning bearings are utilized for both side and lower rollers, maintaining level alignment or adjusting to create a slope when needed. This ensures the rollers can tightly synchronize through precise adjustments, accommodating the inclination between horizontal lines and the rollers seamlessly.
3-4, Hydraulic drop end
The hydraulic drop end device features an oil cylinder, joint, bearing block, and strong bearing supports, ensuring smooth operation.
The hydraulic drop end device allows easy extraction of products along the roller shaft with minimal effort and maximum efficiency.
Once the hydraulic drop action is completed, whether opening or closing, the oil cylinder's stroke reduces to zero, optimizing performance. Powered by an efficient hydraulic station, this system ensures consistent reliability and productivity.
Balance device
The balance device boasts a meticulously engineered compact structure. When the tipping rack slips off the bearing face of the top roller, initiating a tipping movement, the top roller's end naturally succumbs to gravity. To maintain the top roller's horizontal stability, the balance device is strategically installed on the fixed side, creating a crucial separation between the fixed frame and the balance device. This ensures precision by securing the balance device firmly onto the frame with screws.
(plate rolling drawing)
Hydraulic system
Our advanced hydraulic system integrates a high-performance gear pump, a precision-engineered valve group, and an array of assistant pipelines, ensuring optimal efficiency and reliability.
Our hydraulic valve system features the Yuken superposed hydraulic valve series, providing efficiency and precision. The pipeline layout out
is streamlined, offering minimal leakage and effortless maintenance, enhancing overall operational efficiency.
This sophisticated system comprises three meticulously designed loops: the pressure adjusting loop, the synchronization loop, and the speed loop, each serving a critical function.
The pressure adjusting loop fine-tunes the system's operating pressure with a main overflow valve, ensuring a stable working pressure at 16Mpa, optimizing performance.
The synchronization loop adeptly adjusts the lower roller's up-and-down movement through the precise flow divider valve. Additionally, the throttle valve facilitates fine speed adjustments, ensuring flawless synchronization.
The speed loop expertly modulates frame descent and reset, while the throttle valve allows for precise speed adjustments, enhancing control and efficiency.
Electric control system
Our state-of-the-art electric control system consists of an electric cabinet, an operation control table, and a portable button box, all powered by a robust 380V/50Hz supply. The main switch is equipped with short circuit and main motor overload protection. The innovative use of AC contactors for controlling rotation, combined with a PLC programmable control system containing minimal relays, ensures remarkable stability and longevity. The control table is intuitively designed with all necessary buttons and indicator lights to manage the entire rolling process seamlessly, enabling complete operational control and status monitoring.
CNC system
The NC system incorporates a rotation encoder synchronized with a high-reliability industry controller, crafting a control system known for its stable, outstanding performance.
CNC function
CThe NC system ensures real-time monitoring, seamless data transmission, and retains memory during power outages throughout the rolling process, guaranteeing uninterrupted operation.
The industrial control PLC automatically inspects the lower position and both ends of the side roller, maintaining synchronization precision within an impressive ±0.15mm.
The programmable display vividly presents the real-time position of the lower roller and both ends of the side roller,
allowing precise settings to be input for optimal control.
The displacement transducer offers a resolution of 0.10mm, complemented by a display precision of ±0.10mm, ensuring high accuracy and reliability.
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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