W12 80*3000 Heavy Duty Plate Rolling Machine Hydraulic 4 Roller Plate Bending Machine

Advantages of 4-roller rolling machine

►Liner guideway system, reliable and endurable.

►Electronic balance synchronization control system(accuracy ± 0.15mm).

►Double power roller with 2 gearbox and 2 hydraulic motor.

►Surface of roller with heat treatment, which hardness can be HB260-300.

►Hydraulic system to prevent overload.

►Automatic lubrication system.

►Lower voltage control system.

►Automatic alarm system for lower oil level and filter clogged.

►Safety stop system, to stop all moving parts of the whole machine.

Advantages of PLSON 4-roller rolling machine

►Liner guideway system, more reliable and more endurable.

►Large size axis bearings, make the whole structure more stable.

►All moving parts use hydraulic power, more reliable and more endurable.

Features

1. Accurate, ease of operate, fastest roll bendings

2. Flat zone of the sheet edges is minimised

3. Pre-bending, conical bending and ellipse bending can be done easily

4. Double pre-bends(both ends) in one pass

5. Hydraulic and electrical system have been safeguarded from overloads and require minimum maintenance

6. Hydraulic and electrical components are modular and designed according to world standards

7. The sheet is controlled by tighteding of top and bottom rolls

8. Most suitable bending operation for CNC applications

9. More efficient for cycle times

10. User friendly operations without dependence to operator competence

11. Feeding on the order sheet to be completed by the prebend Circle, the smaller circular process

12. Volume in to the curved, cylindrical, conical workpiece

13. Driving for mechanical transmission, hydraulic transmission for the two movements under the roller

Main Equipment

►Suitable in rolling the plate into entire tube or the circular arc as well as certain scope cone.

►You can finish all the work at a time, including pre-bending, rolling and so on

►The upper roller is leading roller, driven by hydraulic motor, which leads the decelerating device, provides the torque requide.

►The lower roller may make the vertical movement, impeled through the hydraulic piston, to be advantageous for the clamp plate.

►The two side rollers can work separately, promoting efficiency.

►PLC control, overload protect.

►Tip over device makes the unloading of workpiece easily.

►Movable controlling table is easy for operation.

►Welded structure is stress relief.

►All working roller are made by fine steel forging, by heat treatment and hardening processing.

►Security meet the requirement by CE.

Main structure of the four-roller rolling machine

►This equipment is composed with machine frame, upper roller device, main driving device, lower roller device, side roller device, balancing device, a tilting device, hydraulic system, electrical system, display system and lubrication system, etc.

►Machine frame
The machine frame is composed of base, fixed side frame and the overturned side frame, all sections of the machine are connected with plate welding structure. Both of the side frame are fixed with bolts on the base seat, and are connected with connecting beam, to guaranteed good rigidity of the whole machine. The side frame has motion guider rail for all rollers, and the fixed side frame has semi-closed base for upper roller. Besides, the overturned frame also has holding device. The acting force will be fade away by the side frame. The base of the machine not only hold the weight and guaranteed the precision of itself, but also balance the torque between main drive and also connected the whole machine.

►Upper roller device
The upper roller is drived by main transmission device to rotary motion, and both ends holds by SP - 1 sliding bearing. The driving end connect the main transmission by flat key and open gear for transmission torque. The overturned end equiped with steel sleeve. The upper roller made of superior alloy steel of 42CrMo, thermal refining with HB260-300.

►The main transmission device
The main transmission device use hydraulic motor, planetary reducer to transmit torque to the upper roller. In addition, there also equiped a electrical hydraulic push rod brake on the high-speed bearing of the speed reduction gear.

►The lower roller device
The lower roller holding on aligning bearings, also, the bearing seat is arranged on the two sides of frame rail, and the bottom connected with piston of the cylinder. Bearing seat can be rise or drop on guide rail by effection. Thrust of the piston can be operated by hydraulic control system at will according to the request of force to clamped she sheet plate with upper and lower roller.

►The side roller device
Side roller holding in the bearing seat, and the bearing seat arranged on the two sides of frame rail, and the bottom connected with piston of the cylinder. Bearing seat can be rise or drop on guide rail by effection. Thrust of the piston can be operated by hydraulic control system at will according to the request of force to clamped she sheet plate with upper and lower roller. Thermal refining with HB260-300.

►The balance device
Balance device using tensioning screw climbing mechanism, when the overturning frame come away from the upper roller bearing, the upper roller will dropped due to the action of gravity on the end of roll, to make the upper roller in a horizontal position, the fixing side outer end of the tail rod is provided with a balancing device and is fixed on the base with bolt.

►The overturned device
The overturned device use the oil cylinder, the hinge to drive the overturning frame overturn disengaged from the upper roller bearing, so that products can be take out.

►Lubrication system
The main reducer and side roller drive reducer used oil tank splash lubrication, natural cooling, when the environment temperature fit -10℃ to 0℃, please use N46 or N68 oil, when the environment temperature fit 0℃ to 40℃, please use N68 or N100 or N150 or N220 oil. The other lubrication points using the manualgrease gun to lubricating. The working medium is grease ZGN40 - 1(for winter use), and ZGN40 - 2(for summer sue), every one or two times of lubricating in one working day.

The hydraulic system

►Introduction
The hydraulic system consists of gear pump, valve group, fluid connectors, hydraulic auxiliary parts, etc. Besides, we choose superposition valve series for the hydraulic valve. Simple pipe arrangement, make it convenient to maintenance and debugging.
The hydraulic system is composed of three kinds of circuit, there are over pressure protection and pressure regulating circuit, synchronization loop, and speed loop components. The pressure regulating circuit system works through the main relief valve pressure.The system working pressure is 19.5Mpa.
Synchronous circuit through the shunt throttle valve on roller rise and fall of coarse step shunt synchronization, throttle exam up and down regulating displacement sensor detection, and the upper roller synchronous positioning accuracy is 0.15mm.
The speed loop control overturning side machine overturned, reset, and adjust circuit with throttle speed through the throttle valve.

►Various of protection measures
There are overflow valve to protect limited rise and fall of upper roller.

The electrical system

The four roller rolling machines' electrical control system consists of an electric control cabinet, console, and hand held button box operation. Power supply 380V / 50Hz. The main switch has overload protection function and short circuit protection for the main motor. Reversing of motor is controlled by the AC contactor, the control circuit use PLC programmable controller system, less relay, operation reliable, and own long service life. The control cabinet is provided with a finished product rolling process of all the control button and indicator, to master machine operation control and working state control.

Jiangsu PLSON Metalforming Equipment Co., Ltd.  is located in the Binhai Industrial Zone of Haian County, Jiangsu Province. The company mainly produces "Prison" brand series hydraulic press, press brake, shearing machine, rolling machine, etc. The products are manufactured according to German technical standards, and the performance of the machine has reached the advanced level in China.Some products have entered the international market, through Nantong, Southeast Asia, the Middle East, Africa and other areas of the product launch. Thanks for your business and welcome to visit our factory.