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- Yield limit: 245MPa
- Max. Width of plate: 3200mm
- Effective length of work roll: 3300mm
- Max.Thickness of plate: 25mm
- Max. Pre-bending thickness: 20mm
- Top roller diameter: 430mm
- Bottom roller diameter: 390mm
- Side roller diameter: 330mm
- Main motor: 22kw
- Bending speed: 4.5m/min
- Bearing: Double row self-aligning bearing (Wafangdian Bearing Factory, China)
- Work roll: Forged round, Quenched and tempered HB240-300, surface hardened HRC45-55 (Qualified suppliers such as Nangang/Warwick)
- Chassis and frame: Q235, Welded structural parts, CNC boring and milling machine processing (self made)
- Hydraulic motor: Hydraulic transmission (Qualified suppliers such as Ningbo Hanzhu Hydraulic)
- Main electrical components: Siemens
- Main motor: Shanghai Xiaohong
- Gear pump: Hefei Changyuan
- Valve: Yuci Youken
- Main cylinder: Cylinder block and piston rod, Forging 45 steel, HRC45-52, chrome-plated surface of piston rod (Jiangsu Op Hydraulic)
- Main cylinder seal: UN type (Taiwan Dingji)
This machine is a four-roller plate bending machine with fixed upper roller position, lower and side rollers can move up and down, upper and lower rollers are hydraulically driven, and the rotation of the side rollers is driven by the friction between the steel plate and each roller. The lower roller and the side roller are moved up and down by the oil cylinders at both ends. The turning and resetting of the front bearing body of the upper roller is carried out by the oil cylinder. Each roller bearing body and oil cylinder are installed in the frame at the left and right ends.
1. Upper roller device
The upper roller device is composed of upper roller, upper roller bearing, hydraulic motor, etc. The upper roller is designed in a drum shape. Generally, the load factor of the upper roller is 0.7 uniformly distributed load to compensate for the deformation disturbance, which greatly improves the straightness of the product. Roll hardness treatment is divided into two steps, quenching and tempering hardness HB240-300, surface medium frequency quenching HRC45-55.
2. Lower roller device
The lower roll device is composed of the lower roll, the lower roll chock, the bearing, and the lower roll cylinder. The lower roll is quenched and tempered HB240-300, and the surface is medium-frequency quenched HRC45-55.
3. Side roller device
The side roller device is composed of two side roller bearing seats, bearings, side roller cylinders, etc.; side rollers are quenched and tempered HB240-280, and the surface is quenched by HRC45-55.
4. Tipping device
The tipping device is composed of a ram, a tipping cylinder, etc.
The overturning of the overturning device facilitates the removal of the product along the axial direction of the roller.
5. Machine guard
There are detachable protective covers around the hydraulic workstation and the space under the work rolls. The large protective covers around the hydraulic work are equipped with glass doors and windows for easy observation and adjustment of the hydraulic valves, as well as easy maintenance.
1. The hydraulic system completes the following actions: driving the hydraulic motor to rotate; driving the oil cylinder to make the lower roller move up and down; drive the rollers on both sides to make the tilting up and down movement; control the dumping cylinder to move up and down.
2. The hydraulic valve adopts superimposed valve series, with simple pipeline layout and convenient maintenance and debugging.
3. The system consists of three circuits, overpressure protection and pressure regulation circuit, synchronization circuit and speed circuit.
4. Synchronous circuit uses a shunt throttle valve to synchronize the rising and falling coarse steps of the lower roller side roller, and the throttle valve adjusts up and down; the displacement sensor detects, and the upper roller has high synchronization accuracy.
5. The rising and falling of the lower roller and the side roller are respectively provided with overflow valves for pressure limit protection
- The control system uses touchiwin (or SIEMENS) color touch screen display, and uses Omron (or Siemens) intelligent PLC and the corresponding input, output and storage modules.
- The sensor adopts a high-precision absolute displacement sensor to ensure the position accuracy and realize the position monitoring of each roller, even if the power is off, there will be no data deviation.
- CNC controller has the functions of real-time monitoring of the rolling process, power-off memory and other functions, and the man-machine interface is intuitive and clear in Chinese. The display screen displays the upper and lower displacement (Yg, Yf) of the main cylinder of the lower roller side roller. Through the system operation input and LCD display, functions such as editing and modifying the parameters of the rolling workpiece can be realized. The industrial controller PLC automatically detects the lower roller The two ends of the side rollers are positioned and controlled to ensure synchronization accuracy.
As a top plate rolling machine manufacturer, Shenchong always focus on customers' satisfaction.
- We will arrange for engineers and installers to go to the site for installation, commissioning and training, which is about 3 days. Or you can arrange for people to come and study.
- The warranty period of the machine is 13 months, including one month in shipping.
- If there is any problem, we will first check the machine problem through video and guide the repair. If it still cannot be solved, an employee will be sent to the site for repair.
- During the warranty period, non-human damage, parts damage shall be responsible by the seller.