W12 Four-roller Rolling Machine

Description

The four-roller rolling machine is suitable for bending work of sheet metal. It can roll round, arc and tapered workpiece in a certain range, and has prebending function at the end of the board. The remaining straight side is small and the working efficiency is high, and the metal plate can be roughly leveled on the machine.

Introduction

Ⅰ.Features

The CNC plate rolling machine forms a circle at a time. It has a pre-bending and moving cone device. You can choose the coil support, which is on the left and right. It is the best choice for large coils in mass production, improving work efficiency and saving labour.

- Easy to operate, rich in bendable shapes CNC control
- Digital readout of each roll displacement. High circling precision
- Full hydraulic drive, high efficiency and energy saving
- Once formed, productivity increased by 50%-80% compared with three roller
- Convenient and accurate material matching, avoiding wrong edge phenomenon
- Cone bending device
- Permanent lubrication
- Upper and lower rollers clamp the sheet when rolling, no slippage.
- Convenient installation of loader, feeder and support device.

Ⅱ.Parameters

Model	maximum pre-bending thickness (mm)	Max thickness of plate (mm)	Max width of plate (mm)	Coil speed (m/min)	Diameter of upper roller (mm)	Diameter of lower roller (mm)	Side roll diameter (mm)	Main motor power (KW)
W12-6x2000	6	6	2000	5.5	180	180	145	5.5
W12-6x2500	6	6	2500	5	210	210	165	7.5
W12-8x2000	6	6	2000	6	215	215	165	11
W12-8x2500	6	8	2500	5	230	230	180	11
W12-12×2000	10	12	2000	5	260	260	200	18.5
W12-12×2500	10	12	2500	5	280	280	220	18.5
W12-16x2000	12	16	2000	6	280	280	220	18.5
W12-16×2500	12	16	2500	5	330	330	220	22
W12-16x3200	12	16	3200	5	360	360	260	30
W12-20x2000	16	20	2000	5	350	360	280	22
W12-20x2500	16	20	2500	6	330	330	260	30
W12-25×2000	16	25	2000	5	410	400	280	30
W12-25×2500	20	25	2500	4.5	410	400	280	37
W12-30×2000	25	30	2000	4.5	470	470	320	37
W12-30x2500	25	30	2500	4.5	550	520	390	45
W12-30x3000	25	30	3000	4.5	550	520	420	45
W12-40x2500	35	40	2500	4.5	650	580	420	55
W12-40x3000	36	40	3000	4	650	620	500	55
W12-50x3000	40	50	3000	4	720	650	520	55
W12-60x3000	50	60	3000	3.5	750	710	560	75

Ⅲ.Working Principle

The top roller is the main drive and do rotation movement, lower roller makes up-down movement to make the plate can get the friction along with length direction, two side rollers makes Up-down movement which is an angel with straight line, which can make the steel plate get the needed plastic deformation.

Ⅳ.Compared with 3-roller rolling machine

1. Full CNC control when rolling coiling block;
2. High bending precision;
3. Improve work efficiency, save production time and labor-save cost;
4.Can do cones with smaller diameter.

Because adjust the side roller can achieve symmetric bending and asymmetrical bending, the flat end will be very short in theory, comparing with three-roller rolling machine, which can save pre-bending procedure and pre-bending device, meanwhile it can make rough leveling of steel plate. It is extensively applied in petroleum industry, chemical industry, boiler, shipbuilding industry, hydroelectricity, metal structure and machinery industry.

Ⅴ.Manufacturer of the standard parts

NAME			Manufacture
Bearings		Type	Double row aligning bearing
		Manufacture	Wafangdian
Rollers		Material	42CrMo forging upper roller and 45# steel other rollers
		Manufacture	Nangang/Warwick Steel
Body frame		Material	Q235A
		Processing methods	Welded structural parts, annealing stress - shot blasting, CNC boring and milling machine machining
		Manufacture	Pully
Hydraulic driver			Jieshite
Hydraulic motor			Nantong tongde
Main electrical element			SIEMENS
Hydraulic system	Pump	Type	Gear pump
		Manufacture	Changyuan
	Valve	Manufacture	YUKEN
	Cylinder	Piston rod	45 Forgings, Heat treatment HRC48-52
		Manufacture	Nantong
		Sealing	Yx
		Manufacture	NOK/dingji
Electric system			digital control system
	Hydraulic motor		Nantong tongde
	Touch screen		Haiwei 15.6’
	PLC		XINJE
	Sensor		Milante
	Main electrical element		Schneider Electric/Siemens