Four Rollers Plate Bending Machine

Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
Four Rollers Plate Bending Machine
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The 4 rolls plate bending machine is hydraulically operated, PLC programmable and controlled by numerical control system, capable of accomplishing automatic rolling process.

During the plate rolling process, top roll stays the same position and the bottom roll moves vertically to hold the metal plate tightly against the top roll. At the same time, two side rolls do the upward movement by linear guide to adjust curvature radius of bent plate, which can implement pre-bending at the end and bending processes in a single direction and in one pass. Automatic mode can be applied in mass production, it provides high forming consistency for workpieces from the same batch.

Features
  • The plate bending machine can be precisely controlled by NC and CNC numerical control systems, suited to be used in mass production.
  • Four rolls are forged and hardened, the hardness reaches HRC48-55, which are featured by high strength, good wear resistance, and suitable for heavy workload operation.
  • Double row roller bearings are used to support work rolls, ensuring a low friction coefficient while reducing reactive power loss.
  • Side rolls can be raised for accurate pre-bending.
  • The bottom roll and side rolls can be tilted for cone rolling.
  • The movements of bottom roll and side rolls are controlled by computer, achieving automatic alignment. Digital display of touch screen provides easy operation, synchronization accuracy reaches ±0.1mm.
  • Tilting and resetting of bearing body are designed with interlocking device to provide safe operation.
  • Main electric parts are from Siemens and Schneider, featuring long service life and maintenance free operation.
  • Moveable control console is easy to operate, touch screen shows the precise positions of work rolls.
  • The plate bending machine adopts PLC programmable control system, which has functions of fault diagnosis, machine parts monitoring, as well as data memory function when power is goes off.
  • Hydraulic system is outfitted with high grade valves which feature large flow rate, low resistance and low heat, enabling the machine to be highly reliable.
  • Hydraulic pipeline connector has reliable radial seal, guaranteeing the smooth operation of hydraulic system without oil leakage.
  • Hydraulic system has oil filter to keep the system clean.
  • Machine base is an integral structure, robust and easy to assembly. Both machine body and base are annealed for eliminating of internal stress and improving of processing accuracy.
Applications
Details
  • Hydraulic motor
  • Heavy duty work rolls
  • Hydraulic tilting system
  • Lifting cylinder
  • Control console
  • Hydraulic system
  • Electric system
  • Siemens touch screen
Optional configurations
  • Cone rolling unit
  • Side support / Upper support
  • Cooling system
  • Feeding system
Specifications
  8*1500 8*2500 10*3000 12*2500 12*3000 16*2500 16*3000 20*2500 20*3000 25*2500 30*3000 25*3000 30*2500 40*2500 40*3000 50*2500 60*3000
Max. Thickness of bending plate (mm) 8 8 10 12 12 16 16 20 20 25 30 25 30 40 40 50 60
Thickness of pre-bending 6 6 8 10 10 12 12 16 16 20 25 20 25 32 32 40 50
Width of bending plate 1500 2500 3000 2500 3000 2500 3000 2500 3000 2500 3000 3000 2500 2500 3000 2500 3000
Effective length of the rollers (mm) 1550 2550 3050 2550 3050 2550 3050 2550 3050 2550 3100 3050 2600 2600 3100 2600 3050
Yield strength of plate (MPa) 235 235 235 235 235 235 235 235 235 235 235 235 235 235 235 235 235
Min. reel dia. with max. size (mm) 400 500 550 550 700 600 700 600 800 700 800 800 800 1100 1000 1200 1800
Diameter of roller Upper (mm) 180 250 300 280 360 300 350 350 400 400 460 420 450 520 560 620 680
Bottom 170 230 280 260 340 280 330 320 380 380 440 400 410 480 550 600 660
Side 150 200 240 220 260 230 260 280 280 320 380 340 360 420 460 500 520
Roller Material 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo 42CrMo
Hardness (HB) 240-286 240-286 240-286 240-286 240-286 240-286 240-286 240-286 240-286 240-286 240-286 240-286 240-286 240-286 240-286 240-286 240-286
Induction hardened roll YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES
Roll Profile crown crown crown crown crown crown crown crown crown crown crown crown crown crown crown crown crown
Lifting mode hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic hydraulic
Lifting synchronous precise ±(mm) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
All bearing brands Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing Self aligning roller bearing
Conical bending device Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Driving mode Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer Motor reducer
Control system Control mode NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC
Display of position & displacement LCD LCD LCD LCD LCD LCD LCD LCD LCD LCD LCD LCD LCD LCD LCD LCD LCD
PLC Omron Omron Omron Omron Omron Omron Omron Omron Omron Omron Omron Omron Omron Omron Omron Omron Omron
Electrical part system Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens Siemnens
Plate bending speed (m/min) About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5 About 3.5
Descending/ascending speed of bottom roller (mm/min) About 160 About 160 About 160 About 160 About 160 About 160 About 160 About 160 About 160 About 160 About 160 About 160 About 160 About 160 About 160 About 160 About 160
Descending/ascending speed of side roller (mm/min) About 260 About 260 About 260 About 260 About 260 About 260 About 260 About 260 About 260 About 260 About 260 About 260 About 300 About 300 About 300 About 300 About 260
Main power motor (KW) 5,5 7.5 11 11 18.5 11 18.5 18.5 18.5 22 30 22 30 18.5*3 2*22 55 55
Hydraulic system Max. working pressure (MPa) 25 22 25 25 25 25 25 25 25 22 22 22 22 22 22 22 25
Valve Yuken Yuken Yuken Yuken Yuken Yuken Yuken Yuken Yuken Yuken Yuken Yuken Yuken Yuken Yuken Yuken Yuken
Seal Valque Valque Valque Valque Valque Valque Valque Valque Valque Valque Valque Valque Valque Valque Valque Valque Valque
Electrical & hydraulic protection against overload Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Construction steel material Q235 Q235 Q235 Q235 Q235 Q235 Q235 Q235 Q235 Q235 Q235 Q235 Q235 Q235 Q235 Q235 Q235
Side support for big sheet metal diameters optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional
Central support for big sheet metal diameters optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional
Feeding table optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional
Oil cooler system optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional optional

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