Rolls Pyramid Mechanical Plate Bending Machine W11-120*3000
The W11-120*3000 is a three-roller symmetrical mechanical plate bending machine in the pyramid arrangement: the top roller sits above and between the two bottom rolls and is raised and lowered at the centre of the span. Screw nut and worm gear together provide that movement, so the roll setting holds where it is put un...
What This Machine Does
The W11-120*3000 is a three-roller symmetrical mechanical plate bending machine in the pyramid arrangement: the top roller sits above and between the two bottom rolls and is raised and lowered at the centre of the span. Screw nut and worm gear together provide that movement, so the roll setting holds where it is put under bending load. The two bottom rolls are the driving rolls, taking torque through the meshing between the gearbox output gear and the bottom roller, which is what pulls the plate through the machine and forms the curve. The design is compact, simple to operate and straightforward to maintain, with no hydraulic system to service. This type of rolling machine suits plate from 4mm to 30mm thick over useful lengths from 1000mm to 4000mm, and the 3m machine covers plate up to 3000mm wide for shells, tanks and cylinders.
Why Buyers Choose This Machine
- Symmetrical three-roll pyramid layout gives a consistent curve through the length of the plate
- Screw nut and worm gear top roller adjustment holds its setting under bending load
- Both bottom rolls drive the plate so heavy plate is pulled through without slipping
- Mechanical drive with no hydraulic system means fewer service points in the workshop
- Compact frame fits into shops that cannot give up floor space to a four-roll machine
- Covers plate thickness from 4mm to 30mm over useful lengths from 1000mm to 4000mm
Where Rolls Pyramid Mechanical Plate Bending Machine W Earns Its Place
Problems It Solves
- Plate rolled on undersized machines springs back into an uneven curve
- Roll settings that creep under load give a different radius along the plate
- Single-driven rolls slip on heavy plate so the sheet is not drawn through evenly
- Hydraulic plate rolls add pumps valves and oil maintenance a mechanical shop does not need
- Forming shells by press braking in steps leaves flat segments instead of a true curve
Who It Is For
- Tank vessel and silo fabricators
- Structural steel shops rolling curved sections
- Pipe and duct manufacturers forming from plate
- Machinery importers supplying plate rolls to heavy fabrication plants
Application Scenarios
- Rolling shells for tanks silos and pressure vessel bodies
- Forming cylinders and pipe sections from plate in a fabrication shop
- Producing curved sections for structural and architectural steelwork
- Rolling conical and cylindrical parts for process equipment
- Heavy plate work up to 30mm in a boiler or vessel shop
Technical Detail
Technical Features
- Three roller symmetrical mechanical structure in pyramid arrangement
- Top roller moves up and down at the central part of the two bottom rolls
- Screw nut and worm gear transmission for top roller movement
- Two bottom rolls acting as main driving rolls
- Torque supplied through meshing between the gearbox output gear and the bottom roller
- Compact structure with convenient maintenance access
- Mechanical drive without a hydraulic system
Specifications
| Machine type | Three roller symmetrical mechanical plate bending machine pyramid type |
|---|---|
| Models | W11-120*3000 |
| Roll arrangement | Top roller above and between two driven bottom rolls |
| Top roller drive | Screw nut and worm gear |
| Main drive | Two bottom rolls driven through gearbox output gear meshing |
| Suitable plate thickness | 4mm to 30mm for this machine type |
| Useful length range | 1000mm to 4000mm for this machine type |
| Working width | 3m class machine |
Figures above are taken from the product information we hold. Send us your application and we will confirm the exact specification for the model quoted.
How It Is Built and What Can Be Changed
Operations Performed
- Plate rolling
- Bending
- Cylinder forming
- Cone rolling
Quality Control
- Roll surfaces checked for straightness and parallelism after machining
- Worm gear and screw nut adjustment tested through full top roller travel
- Gearbox and drive meshing checked under load
- Test rolling carried out on sample plate before packing
Customisation Options
- Roll length and thickness capacity selected for the plate you form
- Roll surface treatment specified for the material you roll
- Supply voltage phases and frequency built for your market
- Support rollers and end stands quoted for long or heavy shells
- Manual and machine markings in your working language
How It Compares With the Alternatives
| Four roll plate bending machine | A four-roll machine pre-bends the leading edge without turning the plate; the symmetrical three-roll W11 is simpler and cheaper to run but leaves flats at the plate ends to be pre-bent or trimmed |
|---|---|
| Hydraulic plate rolling machine | Hydraulic rolls adjust under power but bring pumps valves and oil maintenance; the mechanical W11 uses screw nut and worm gear drive that holds position without a hydraulic circuit |
| Forming a shell on a press brake | Step bending on a brake leaves flat segments and visible facets; rolling produces a continuous curve in one pass |
Running the Machine
Step 1
Check the plate thickness and width are within the machine range for the job
Step 2
Set the top roller position with the screw nut and worm gear adjustment
Step 3
Feed the plate squarely between the rolls so the curve is not wound in skewed
Step 4
Pass the plate through and increase the top roller setting between passes
Step 5
Check the radius against a template and adjust before finishing the shell
Step 6
Pre-bend or trim the flat leading and trailing edges on a symmetrical three-roll machine
Step 7
Keep the rolls clean and the gearbox lubricated to the maintenance schedule
Other Machines in Plate Rolling Machine
Related Applications and Guides
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Questions About Rolls Pyramid Mechanical Plate Bending Machi
What plate thickness can this machine roll?
This type of rolling machine suits plate from 4mm to 30mm. Rolling capacity depends on material grade and width, so send us your plate grade, thickness and width and we will confirm.
What does W11-120*3000 mean?
It is the model designation for this machine build, the 3m class pyramid plate bending machine in the W11 mechanical series.
Why are there flats at the ends of my rolled shell?
A symmetrical three-roll machine cannot bend the plate right to the leading and trailing edge. Those ends are pre-bent on a press or trimmed off after rolling, which is standard practice for this machine type.
Does it need a hydraulic power pack?
No. It is a mechanical machine. The top roller is moved by screw nut and worm gear, and the bottom rolls are driven through the gearbox, so there is no hydraulic circuit to maintain.
Can it roll cones?
Cone rolling is possible on three-roll machines with the appropriate setting and end stops. Send us the cone dimensions and plate thickness and we will advise whether this machine suits the work.
What are your trade and payment terms?
FOB CFR and CIF. Payment is 30 percent by T/T on order and 70 percent before shipment, or an irrevocable L/C at sight.
How is the machine shipped?
It is a heavy machine shipped from Xi'an in export packing. Send us your destination port and we will quote FOB CFR or CIF with the shipping dimensions.
Request a Quote on the Rolls Pyramid Mechanical Plate Bending Machi
Send us the work you need it to do, the voltage on your site and the port you ship to. We will come back with the model, the tooling and the lead time.