4 Roll Plate Bending Machine Manufacturer

4 Roll Plate Bending Machine

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Hydraulic bending roll for bending metal sheets and plates into curved, round and conical shapes

This 4-roll plate bending machine is a highly specialized device engineered for metal sheet bending and correction. It is specifically designed to handle the forming and bending of metal sheets, with the capability to pre-bend the ends of the sheet in a single pass, roll cylindrical and curved workpieces, and perform initial rough shaping of the metal sheets.

Features
Specifications
Components

Features

The top roller is the primary driving roller, while the bottom and side rollers are driven rollers, rotating via the friction force between the steel plate and the rollers.

The top roller's position is fixed, allowing only rotational movements. Lifting displacement is not performed. The flipping and resetting of the bearing body on the front side of the top roller are controlled by a cylinder.

Both the bottom roller and the side roller are adjustable via oil cylinders at their respective ends, facilitating vertical movements.

The left and right frames form the core of the machine, featuring a welded structure mounted on a base of integral welding. All operational controls are centralized on the operating table.

Applications

The 4-roll plate bending machine is extensively used in various industrial applications including shipbuilding for metal hull bending, forming boiler wall equipment in energy sectors, shaping components in aviation machinery, bending bridge steel structures, and general metal bending in machinery manufacturing. This versatility makes it an essential asset in heavy-duty metal fabrication tasks.

Wind Turbines
Rocket Shells
Oil Tanks
Ship Hulls

Specifications

Model	Max. bending thickness (mm)	Pre-bending thickness (mm)	Max. working length of roller (mm)	Top roller diameter (mm)	Bottom roller diameter (mm)	Side roller diameter (mm)	Main motor (kW)
W12-4x2000	4	3.5	2050	160	140	120	3
W12-6x2000	6	5	2050	190	170	150	4
W12-8x2000	8	6.5	2050	210	190	170	5.5
W12-10x2000	10	8	2050	230	210	190	7.5
W12-12x2000	12	10	2050	270	250	210	11
W12-16x2000	16	13	2050	300	270	220	11
W12-20x2000	20	16	2050	330	300	240	11
W12-25x2000	25	20	2050	360	330	250	15
W12-30x2000	30	25	2050	390	360	300	18.5
W12-35x2000	35	28	2050	430	390	330	22
W12-40x2000	40	32	2050	460	420	360	30
W12-4x2500	4	3.5	2550	190	170	150	4
W12-6x2500	6	5	2550	210	190	170	5.5
W12-8x2500	8	6.5	2550	230	210	190	7.5
W12-10x2500	10	8	2550	270	250	210	11
W12-12x2500	12	10	2550	300	270	220	11
W12-16x2500	16	13	2550	330	300	240	11
W12-20x2500	20	16	2550	360	330	250	15
W12-25x2500	25	20	2550	390	360	300	18.5
W12-30x2500	30	25	2550	430	390	330	22
W12-35x2500	35	28	2550	460	420	360	30
W12-40x2500	40	32	2550	510	460	390	37
W12-4x3000	4	3.5	3100	210	190	170	5.5
W12-6x3000	6	5	3100	230	210	190	7.5
W12-8x3000	8	6.5	3100	270	250	210	11
W12-10x3000	10	8	3100	300	270	220	11
W12-12x3000	12	10	3100	330	300	240	11
W12-16x3000	16	13	3100	360	330	250	15
W12-20x3000	20	16	3100	390	360	300	18.5
W12-25x3000	25	20	3100	430	390	330	22
W12-30x3000	30	25	3100	460	420	360	30
W12-35x3000	35	28	3100	510	460	390	37
W12-40x3000	40	32	3100	550	510	420	45

Key Components

Main Drive Mechanism
The primary driving mechanism is the upper roller, powered by a hydraulic motor connected through a reduction gearbox to ensure a consistent rolling speed of approximately 4 meters per minute, facilitating efficient steel plate feeding.

Roller Mechanics
Hydraulic systems enable both simultaneous and independent lifting of the lower roller and side rollers. The system also manages the dumping and resetting of the inverted head.

Hydraulic Systemt
Features an independent hydraulic pump station comprised of an oil pump motor, hydraulic valve group, and auxiliary piping.

The hydraulic pump is equipped with an oil filter to ensure clean oil supply.
The system is designed to be leak-resistant and easy to maintain, using high-quality seals and components from renowned manufacturers.
The synchronization of roller lifting is managed by a PLC system, ensuring high precision through sensors and hydraulic valves (including electromagnetic reversing valve, throttle valve, and hydraulic control check valve).

Electronic Control System

Comprises an electric control cabinet, an operational console, and a handheld control box.
The PLC and other control devices are housed in a distribution cabinet, with a touch screen interface for operational ease.
Components primarily sourced from Schneider Electric, with the main electrical system designed for three-phase 380V/50Hz AC. Includes comprehensive motor protection against short circuits and overheating.