4 Roller Plate Bending Roll Machine is the first choice of the durable intelligent equipment for profile and arc rolling. Four-roll bending rolling machine can mass produce precision parts effectively and decrease process cost per part. The left and right frames are the main body of the four roller bending machine, and the welding structure is adopted and installed on the whole welding base. All the operations perform on the operating table.

CNC 4 Roller Plate Bending Roll Machine

  • The upper roller is the main roller, the lower roll and the side roll are driven rollers. The rotation is driven by the friction force between the steel plate and the rolls.
  • The upper roller is fixed only for rotation motion, and it does not move up and down.
  • The lower roll and the side roll can be moved up and down, all of which are moved up and down by its left and right cylinders.
  • Turned and reset of the front roller bearing body is carried out by the oil cylinder.
  • Each 4 roller bearing body and oil cylinder are installed in the frame of the left and right ends.

Advantages and difference:

  • The upper roller is main drive roller, bottom roller and two side rollers make vertical movement to tighten the plate.
  • Vertical movement close to upper roller adjust circle radius.
  • Small straight edge of pre-bending.
  • High rolling precision.
  • Roll taper workpiece with full generatrix
  • Rollers moving position control by computer.
  • Highest rolling efficiency and capacity.

Compared with the symmetric three roll bending machine

CNC 4 roll bending machine can directly bend the end of the sheet directly without any other equipment, and the remaining straight side is smaller.

Compared with the asymmetrical three roll bending machine

CNC 4 Roller Plate Bending Roll can roll the plate sheet without turning it. It not only improves the efficiency, but also ensures the quality of the work piece, and the process is simple, the operation is convenient, and the labor intensity of the workers is lightened.

Bending Process

  • Operate upper roller to make the distance between up buss and down buss a little larger than plate thickness, then operate the feeding side roller to make distance between side roller’s up buss and down roller’s down buss keep in same level, lastly operate the other side roller to make its position between up and down roller.
  • Feeding: horizontally feed the plate to make plate end touch with ventro-side roller wholly, then low the side roller to original position.
  • Clamping plate tightly and start pre-bending.
  • Use ventro-side roller to pre-bend the other side of plate, after finish pre-bending the left side, then low the back side roller to original position; then operate the upper roller to bend the plate to the right position shown on drawing, then stop the upper roller, lastly operate the ventro-side roller up to bend the other side of plate.
  • Principium bending: adjust ventro and back side roller to appropriate position, operate the roller to do principium bending.
  • Figuration bending: adjust ventro and back side roller to appropriate position, operate the upper roller to do figuration bending.
  • Take out the workpiece: after finished whole bending, low the down roller to the lowest position, then workpiece gradually lower with the two side rollers to an appropriate position, overturn the head, lifting the workpiece, remember to keep same level with upper roller to discharge the workpiece.

4 Roller Plate Bending Roll Components

  • Left and right framework
  • Overturn head
  • Upper roller part
  • Down roller part
  • Side roller part
  • Connecting part
  • Welded base
  • Driven part
  • Hydraulic part

Applications:

  • CNC plate rolling machine has a strong ability of rolling small circle, the general rolling machine with the highest rolling efficiency and ability, which is suitable for higher standards.
  • Used in aviation Industry and high precision machinery manufacture etc…

Hydraulic System

The independent hydraulic pump station is composed of the oil pump motor, the hydraulic valve group, the pipe auxiliary parts and so on. The motor drives the pump to output the pressure oil. In order to ensure the cleanliness of the oil, an oil filter is installed at the oil outlet of the oil pump. The pressure oil coming out of the oil pump first enters the pressure regulating system and sets the pressure. Then it passes through the passage block and from the three position four way reversing valve to the oil cylinder.

The production of the hydraulic pump station system is strictly produces according to the national standard and the line standard, and the layout is reasonable. Taking full consideration of high efficiency and energy saving, reducing waste and reducing heat source. The system is independent, proper sealant is used to prevent leakage, and it is convenient for maintenance.

Hydraulic pumps and hydraulic valves are selected from famous brand series and cylinders, which are customized products produced by professional hydraulic cylinder factories. The pipeline layout is concise, and the leakage is few, so the maintenance and debugging are convenient.

The lifting and synchronizing system of each roller is controlled by PLC, and is automatically adjusted through the hydraulic valve (electromagnetic reversing valve, throttle valve, hydraulic check valve) and displacement sensor. The synchronization accuracy is very high.

Main Transmission Mechanism

The upper roller of the four roll bending machine is the main transmission roller, and the hydraulic motor drives the roller shaft with a certain speed ratio reducer, so that the roller shaft rotates at a speed of about 4 meters per minute, thus completing the action of steel plate feeding.

Auxiliary Institutions

Lift roll and roll on both sides, and the above reset end dumping, adopts hydraulic transmission.

The lower roller and the side roller ends can rise at the same time, and can also be a separate lifting.

The elevating position of the two ends of the roller can be accurately displayed on the operating table.

Electronic Control System

The electric control system is composed of control cabinet, console, handheld control box.

This machine control electrical apparatus (including PLC) is installed in the distribution cabinet.

Using touch screen display and operation, the operation is convenient.

The main circuit uses three phase 380V/50Hz alternating current, and the motor has short circuit overheating protection function.

The main electrical components use Schneider product. In strict accordance with the national standards, the structure is reasonably arranged and the has necessary safety measures.

Control System

Control system for sheet metal plate rolling machine can control the movement of rolls and side unloading device.

Control system display screen shows the rolling movement position for operators to ensure the rolling precision.

Electrical Cabinet

Electrical Cabinet contains both electrical circuits of mechanical and hydraulic system of plate bending roll.

All components in Electrical Cabinet of Shenchong Plate Bending Roll are imported from Europe to ensure the quality.

ModelUseful length (mm)Min. diameter=top rollerφx5Min. diameter=top rollerφx(1.5~2)             Top roller dia. (mm)Bottom roller dia. (mm)Side roller dia. (mm)Main motor (Kw)Rolling speed

(m/min)

Overall dimension (LxWxH)Weight (ton)
Without prebendWith prebendWithout prebendWitho prebend
W12-12×2000200012962202201607.53-54500x1500x14005
W12-16×2000200016128260240200113-54100x1700x18006.7
W12-12×2000200012962202201607.53-54500x1500x14005
W12-12×2000200012962202201607.53-54500x1500x14005
W12-30×20002000302520360330270303-55100x2100x200013
W12-8×250025008642202001607.53-55000x1500x14006
W12-12×250025001296250230180113-55100x1500x14007.1
W12-16×2500250016128280260220153-55100x1950x190010.2
W12-20×25002500201612330310250223-55300x2000x200012
W12-25×25002500252016360330270303-55600x2100x200015
W12-30×25002500302520390360290373-55600x2250x210018
W12-40×25002500403530470440380453-56100x2550x270025.5
W12-50×25002500504035510480410553-56100x3100x270036
W12-60×25002500605040560530450753-56500x3200x300048
W12-6×300030006542202001607.53-55500x1500x14007
W12-8×3000300086.55250230180113-55600x1500x14009
W12-12×300030001296280260220153-55700x1950x190012
W12-16×3000300016128330310250223-52900x2000x200014
W12-20×30003000201612360330270303-56100x2150x200017
W12-25×30003000252016390360290373-56100x2250x210020
W12-30×30003000302520410380320453-56300x2500x240023
W12-35×30003000353025470440380453-56600x2550x270028
W12-40×30003000403530510480410553-56600x2600x275039
W12-50×30003000504035560530450663-56600x3200x300051
W12-60×30003000605040650620520753-57000x3300x340074
W12-70×30003000706050700670550903-57200x3500x360089
W12-12×2000200012962202201607.53-54500x1500x14005
W12-16×2000200016128260240200113-54100x1700x18006.7
W12-12×2000200012962202201607.53-54500x1500x14005
W12-12×2000200012962202201607.53-54500x1500x14005
W12-30×20002000302520360330270303-55100x2100x200013
W12-8×250025008642202001607.53-55000x1500x14006
W12-12×250025001296250230180113-55100x1500x14007.1
W12-16×2500250016128280260220153-55100x1950x190010.2
W12-20×25002500201612330310250223-55300x2000x200012
W12-25×25002500252016360330270303-55600x2100x200015
W12-30×25002500302520390360290373-55600x2250x210018
W12-40×25002500403530470440380453-56100x2550x270025.5
W12-50×25002500504035510480410553-56100x3100x270036
W12-60×25002500605040560530450753-56500x3200x300048
W12-6×300030006542202001607.53-55500x1500x14007
W12-8×3000300086.55250230180113-55600x1500x14009
W12-12×300030001296280260220153-55700x1950x190012
W12-16×3000300016128330310250223-52900x2000x200014
W12-20×30003000201612360330270303-56100x2150x200017
W12-25×30003000252016390360290373-56100x2250x210020
W12-30×30003000302520410380320453-56300x2500x240023
W12-35×30003000353025470440380453-56600x2550x270028
W12-40×30003000403530510480410553-56600x2600x275039
W12-50×30003000504035560530450663-56600x3200x300051
W12-60×30003000605040650620520753-57000x3300x340074
W12-70×30003000706050700670550903-57200x3500x360089
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