W12NC Series
4-Roller Plate Bending Machine
Product Description
4-Roll Plate Rolls Great Solutions For Great Challenges DURMAPRESS® manufactures 4 rolls hydraulic plate bending machines with capacity in thickness from 2 mm to 200 mm and in width from 500 mm to 12000 mm.Prescide, Productive and Reliable As well as being reliable, This increases productivity with its high speed rolling ability and it overcomes the most challenging bends thanks to its ease of use. Since the plate is pinched during rolling, skidding and slipping of materials are prevented. Thus, more. 4-Roll Plate Rolling Machines, one of the side rolls can be used as a squaring roll, thus the plate can be easily and precisely aligned along the roll across the input direction

Working Principle

Standard Components: 

Standard Component

 
  • Movable control panel
  • Hardened rolls
  • Digital read out for both rolls
  • Hydraulic station
  • Hydraulic motor
  • Hydraulic drop end
  • Cone bending device

Optional Component

 
  • Top and lateral support rack for big diameter
  • Ground and polished rolls for special job
  • Safety cable
  • Fan cooled or water cooled

Specifications

Lateral rolls and pinch roll always move in orbital way with help of hydraulic pistons

With hydraulic drop end,it’s convenient and easy to remove finished ferrule
Mobile control panel lead to easy operation
Hydro-motor provides power for top roll
High quality welded steel frame
Good rigidity induction hardened rolls(42CrMo)
Easily control hydraulic balance system
Reliable and safety overload protection

Release Device

Hydraulic drop-end for easy removal offinished ferrule.

 

PLC Control system

 

HMl (human machine interface), intelligentoperation. Self-compensating, single operate,high efficiency, safe and convenient.
Many models for choice, economic numericalcontrol model.
APLC control system ensure the machine' sbottom and lateral rolls operate synchronously.Up to eight steps can be programmed with thetouchscreen.

 

Advantages:
The 4 Rollers Plate Bending Machine is the easiest one, thanks to a frame designed to satisfy every kind of needs. 
 
Advantages are various :
 
1.Pre- rolling is highly reduced because the material gets pinched by in between the two central rolls.
2. Working can be made in one only pass, following the steps here below:
Squaring
Pre- rolling rolling
Closing pre- rolling
3.The plate is fed into the machine horizontally thanks to the support of the lower roll (B) with the side roll (D).
4.The plate is squared thanks to the position that the side roll (C) takes.
5.The space to the limit of the machine reduces to one side only, thanks to the possibility of squaring and rolling in one only step.
 

The Structure of the 4-Roller Plate Bending Machine

A four-roll oling machine is mainly composed of these parts: hydraulic positioning cylinder,control panel, top roll, side roll bottom rol.machine frame.
The four-roller rolling machine is suitable for the rolling forming work of sheet metal lt can roll round,curved and tapered woripieces within acertain range, and has the function of pre- rolling at the end of the sheet. The remaining straight edges are small and the work eficiency ishigh.The metal sheet can be roughly leveled on the machine.
 

 

DURMAPRESS Solid rolls made by 42CrMo

Solid rolls made by 42CrMo

 

Product Range 

The W12CNC series machine is available in more than 20 different sizes that cover a pre-bending range of wall thicknesses of up to 320 mm. Standard sizes can be built with roll lengths of up to 4 500 mm. Special designs with roll lengths of up to 8 000 mm are feasible.

 
DURMAPRESS Economic Smart Series

Includes Following Features And Properties

Technical Data

Model Max. Bending thickness(mm) Pre-bending thickness(mm) Max. Working length of rolls(mm) Yield limit (Mpa) Top roller diameter(mm) Lower roller diameter(mm) Side roller diameter(mm) Main power(KW)
W12-4x2000 4 3.5 2050 245 160 140 120 3
W12-4x2500 4 3.5 2550 245 190 170 150 4
W12-6x2000 6 5 2050 245 190 170 150 4
W12-6x2500 6 5 2550 245 210 190 170 5.5
W12-8x2000 8 6.5 2050 245 210 190 170 5.5
W12-8x2500 8 6.5 2550 245 230 210 190 7.5
W12-8x3000 8 6.5 1960 245 270 250 210 11
W12-10x2000 10 8 2050 245 270 250 210 7.5
W12-10x2500 10 8 2550 245 270 250 210 11
W12-10x3000 10 8 3100 245 300 270 220 11
W12-12x2000 12 10 2050 245 270 250 210 11
W12-12x2500 12 10 2550 245 300 270 220 11
W12-12x3000 12 10 3100 245 330 300 240 11
W12-16x2000 16 13 2050 245 300 270 220 11
W12-16x2500 16 13 2550 245 360 330 250 15
W12-16x3000 16 13 3100 245 360 330 250 15
W12-20x2500 20 16 2550 245 360 330 250 15
W12-20x3000 20 16 3100 245 390 360 300 18.5
W12-25x2500 20 20 2550 245 360 330 250 15
W12-25x3000 25 20 3100 245 430 390 330 22
W12-30x2500 30 25 2550 245 430 390 330 22
W12-30x3000 30 25 3100 245 460 420 360 30
W12-40x3000 40 32 3100 245 550 510 420 45

Components

Name Details Manufacturer Remarks
Hydraulic system •Pump Station ChangYuan,China Options: Sunny,USA
•Valve Yuken,Japan  
Control Device •Low Voltage Apparatus Siemens,Germany  
Drive Device •Motor Hanzhu,Ningbo  
Side Frame and Chassis •Material Q235  
•Techniques Side Roller Lift Cylinder Material for 45# forgings, quenching and tempering heat treatment HB217-255  
Fixed and tipping side frame and chassis are welding pieces of steel plate  
Working roller •Material 42 CrMo  
•Techniques Forging piece go through rough machining then quenching and tempering treatment at HB241~280  
Finish turning then medium frequency quenching of surface at HRC40-45  
Electrial Control
System
•Touchwin from China Durmapress  
Sealings •Nok from Japan SDKELI / DSP   
Bearing  •WFD Durmapress   
PLC Encoder •Omron Japan  
Other Electrical Parts •Siemens Germany  

More Details

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