Plate rolling machine Plate rolling machine

Plate rolling machine

Plate bending machine is the ideal rolling solution for metal sheet industry. Available with four rollers, plate roller machine is a high precision and flexibility with high efficiency. The ideal combination of size, speed and accuracy. It makes a big impact on you bottom line with the plate rolling machine to get the round sharp .

CNC four rollers plate roller machine, which is controlled by a CNC system to form a circle at one time. With a pre-bending and moving cone device, you can choose the coil support, and the coil support is left and right. It is the best choice for large coils with powerful functions, suitable for mass production, improved work efficiency, and saves labor.

Plate rolling machine is the ideal rolling solution for metal sheet industry. Available with four rollers, plate roller machine is a high precision and flexibility with high efficiency. The ideal combination of size, speed and accuracy. It makes a big impact on you bottom line with the plate rolling machine to get the round sharp .

CNC four rollers plate rolling machine, which is controlled by a CNC system to form a circle at one time. With a pre-bending and moving cone device, you can choose the coil support, and the coil support is left and right. It is the best choice for large coils with powerful functions, suitable for mass production, improved work efficiency, and saves labor.

Large working stroke is good to get better metal sheet rolling effect. And plate rolling machine can roll more thicker plates than similar 3-roller or 4-roller sheet metal rolling machines. It is widely used in petroleum, chemical industry, cement, boiler, ship building, aviation.

Adopting 3-roller symmetrical structure with the upper roller moving vertically in the center between the two nether rollers, which is achieved through the drive of the screw, the worm and the lead screw.

Nether two rollers rotate and provides the plate materials with torque. Through the engagement of the output gear of the moderator with the gear of the lower rollers.

plate rolling machine

Main features of plate rolling machine

  • Horizontal movement of two nether rollers, lower working height requires smaller foundation pit and smaller foundation bolt load.
  • During pre-bending and rolling, the plates always keep in a horizontal position so that the working pieces can be moved easy.
  • Small nether roller center distance is conducive to the prebend of thin plate, which can meet the requirement of pre bending of various diameters.
  • The upper roller can be used as a traditional bending machine, which can achieve the cylinder alignment.
  • Induction hardening forged rollers or SAE1050 rolling steel rollers
  • Compact design facilitates the transportation of machines into the container.
  • Solid and geometry structure makes it is easy to operate and use.
plate roller machine

Structure of cnc plate bending machine

  • Whole of the plate rolling machine includes the upper roller, the upper roller lifting device, the nether roller.  
  • The upper roller is composed of main oil cylinder, upper roller bearing seat, upper roller and double row adjustable center bearing. The main oil cylinder and piston rod are all 45# forgings, and the piston rod is plated with Cr.
  • The sealing element adopts Y type sealing ring imported from Japan, which provides the pressure needed for rolling plate. The piston rod of the main cylinder is connected with the bearing seat of the upper roller.
  • The upper roller is designed to be drum shaped. The roller hardness processing steps can be divided into two steps. The tempering and hardening hardness is HB240-280 and surface medium frequency quenching HRC45-52.
  • The two ends of upper roller are equipped with double row center-adjustable bearing
  • Double row and double row aligning bearings are arranged in upper roller bearing seats at both ends.
plate rolling machine

cnc plate rolling machine technology for metal sheet

Feeding 

Lifting the upper roller make the distance between lower busbar and the upper busbar of lower roller a little larger than the plate thickness then feed the plate horizontally until the end of the plate in full contact with the baffle on the side of the working roller for alignment.

Pre bending 

Moving the upper roller according to rolling requirement, adjust the lower roller to make inching and rotate to pre bending the end of the plate according to workpiece the curvature, the length of sheet clamped by upper roller and lower left roller is 1.5-2.5 times than plate thickness; during the prebend the oil cylinder pressure can be adjusted to 5-20MPA according to different thickness.

Another End pre- bending 

This step is easy just change the roller position then pre bend another end.

Final Bending 

Final bending can be divided into several steps, control the upper roller down to the middle position of the plate for the initial bending, control the lower roller rotation to make the direction of rotation direction with the plate feed direction .

plate rolling machine

Professional metal sheet plate rolling machine control system

  • Human machine interface with intelligent operation 
  • Self-compensation standard with high efficiency and safe function as well 
  • Meet standard of CE and ISO9001 requirement.
  • Automatic controlled by the system, there’s no need additional processing steps for bending the ends for professional engineer.
  • With our three rolls plate bending machine, plate can be bent on both side without return
  • The flat edge is 1.5-2 times of the thickness.

Manufacturing process of main parts for plate roller machine

  • Working rollers: Casting steel ingot (chemical composition analysis): Check performance-forging annealing – UT flow-roughing(mechanical tests) – heat treatment(hardening and tempering) – UT flow-semi finishing – finishing
  • Lager forgings: Cylinder body, gear shaft forging roughcast – surface inspection – roughing – UT flaw – detector heat treatment – finishing semi – finishing
  • Welding structure: Rack, chassis, wheel box
  • Plate into the factory (chemical composition analysis, mechanical properties test) – pre-treatment – for sheet metal cutting – welding – seam UT or Rt flow – annealing treatment – roughing finishing – vibration destressing – hot blasting – finishing
plate rolling machine

Working principle and design according to CE of plate rolling machine

  • The offloading device is used after the round cylinder have been finished, before leaving the left bearing seat, raised the upper roller to standard height .
  • It makes the upper roller stop with balance pull rod at the bottom of upper roller. then draw out pin shaft on the titling bearing seat.
  • The fuselage eliminates internal stress by annealing and ensures higher precision and strength
  • All machines are designed using SOLID WORKS 3D programming and made with enhanced ST44-1 quality steel with the latest technology.
  • The operation part consists of left and right bearing housing, one upper roller, two lower rollers, lifting gears and some accessories
plate rolling machine

Structure of cnc metal sheet plate rolling machine

  • The top roller does the movement of elevation in the central position of the two bottom rolls. It’s transmitted by screw nut and worm gear.
  • Two bottom rolls are main drive rolls. They rotate by the meshing between the output gear of the gear box and the bottom roller and supply the torque for bending plate. It’s compact, maintain and very easy to operate. 
  • The lower roller is driven by the main motor through the main reducer. The main reducer output shaft transmits to the two lower rollers through a group of the gear wheel. The roller driving direction is switched by the main motor.
plate rolling machine

All electrical component and important parts purchased from famous brands for cnc plate roller machine

  • The main components are: three 45 steel forged rollers, HRC3545, the support frame is welded, the process after being welded, the lower pallet is a welded part. Ball bearing screw and worm gear are 45 steel forged parts, all of the electrical components from Schneider.
  • The lower roller is driven by the main motor through the main reducer. The main reducer output shaft transmits to the two lower rollers through a group of the gear wheel. The roller driving direction is switched by the main motor.
  • Hydraulic System From Japan Yuciyuken
  • Yuciyuken integrated hydraulic valve block and hydraulic transmission with high reliability.
  • Integrated hydraulic system can effectively alleviate problems cause by leakage of hydraulic fluid to improve the working efficiency and rolling precision

The function of the offloading device of plate roller machine

  • The offloading device is used after the round cylinder have been finished. Before leaving the left bearing seat raises the upper roller to standard height.
  • Make the upper roller stop with balanced pull rod at the bottom of upper roller. Then draw out pin shaft on the tilting bearing seat, overturn the tilting bearing seat, then the coiled product can emerge from one end of the upper roller.
Plate rolling machine

When you operate the metal sheet plate rolling machine what should we note ?

  • There must be specified person in charge of roll bending machine.
  • The operator must be familiar with structure, performance and usage of machine.
  • The operator can turn on roller under specified charger agreement.
  • Carefully check the safety system before running machine.
  • Hands and feet are strictly prohibited on rollers, transmission parts and workpiece during processing.
  • After work interruption, should put clutch on neutral position.
  • When several workers collaborate process, must have guider’s command.
  • No overloading.
  • The up-down and rollover of upper roller, the reset of bearing, also the balance of upper roller, must conduct after main drive close down.
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