Steel Plate Rolling Machine Manufacturer

Variable Geometry Plate Bending Machine

High-precision end of the pre-bending, set the length of the straight edge freely; direct pressure on the pre-roll bending, high-precision can be completed in advance of the end of the bend.

3 Roll variable geometry Bending Rolls PRV

The PRV variable geometry plate bending machine is very suitable for medium and heavy plates.

Excellent performance and easy operation. With the pre-bending function of the plate end, the metal plate can be loaded at one time, and the plate end pre-bending and the roll forming of the workpiece can be completed without turning the head.

PRV 3-Roll Plate Rolling Machine with the variable geometry design doesn’t have a fixed roll. The plate roller is designed so that the top roll moves up and down and the two lower rolls move horizontally and independently of each other.
It has the function of pre-bending the end of the plate, which can feed the metal plate at one time, and can complete the pre-bending of the plate end and the rolling of the workpiece without turning around. The three work rolls are the main driving rolls. The lifting and lowering of the upper roll and the horizontal movement of the two lower rolls are hydraulically driven. The lifting displacement is controlled by a computer, automatically leveled, and displayed on the screen. The synchronization accuracy is ±0.2mm. The equipment’s flexibility makes it a suitable choice for medium to thick materials, say more than 1 in. thick.

Bending Thickness: 60-120mm
Pre-bending Thickness: 50-100mm
Bending Width: 3200-4000mm

Top 5 Advantages of 3 Roll variable geometry Bending Rolls PRV

The unique bending process of PRV variable geometry bending rolls can realize end pre-bending and continuous bending without a back angle, and the bending process is fully digitally displayed.
Built-in pressure cylinder to strengthen conical rolling; hydraulic pre-relief system.
PRV variable geometry steel plate bending machine has a variety of overload and safety protection functions, linkage interlock, automatic fault alarm, and prompt, which can effectively prevent misoperation and protect equipment and operators.
Friendly man-machine interface, efficient and intelligent operation, physical bending process software, automatic compensation during bending, single operation,
All work rolls are forged from high-quality steel and are heat-treated and induction-hardened.

6 Features of PRV variable geometry plate bending machine

Each of PRV variable geometry plate bending machine lower rollers can move independently horizontally, can produce any required pitch, and its motor-mounted upper roller can move vertically. Due to the different geometries produced by these rollers, the PRV 3-roll plate bending machine can be used with diamond-shaped or asymmetric machines as required. The possibility of increasing the distance between the lower rollers determines: Only one metal plate roller can be equivalent to the function of multiple plate benders, which expands the scope of conversion.

3-roll hydraulic bending machine with variable geometry configuration for roll press bending.
The rolls are crowned to compensate for deflection loads and to increase the driving and clamping force between the plate and the rolls.
No flaps are required during the entire rolling process. Easy one-man operation.
Electro-hydraulic control of the parallelism between the upper and lower rolls.
The machine housing and frame are made of welded steel construction and have been stress relieved.
The 3 rollers are mounted on sealed bearings and require no lubrication, reducing maintenance.

11 Standard Configurations of PRV variable geometry Bending rolls

CNC control, the upper roller lifting and lowering adopt displacement sensor detection, and the LED display can directly observe the working displacement of the upper roller.
The lower work roll is driven to move by the hydraulic piston of the horizontal oil cylinder.
Overload protection •-Three sets of digital output, visually displaying the position of the work roll.
Hydraulic inverted headstock for easy unloading of the rolling cylinder.
Independent mobile console, easy to operate.
Welded steel frame and overall stress relief.
All work rolls are forged from high-quality steel and are heat-treated and induction-hardened.
The cone-rolling device of the plate rolling machine.
Hydraulic balance system •-Two-speed working system.
Manufactured in accordance with EC safety standards and has CE certification.
All electrical and hydraulic components are of well-known brands.

Produce a short unbend flat

Any plate rolling operation typically leaves an unbent flat end section.

That flat section is minimized with the PRV variable-geometry 3-roll plate bending machine. If the plate is fed into the machine from the left side, the left bottom roll, acting as a lower press die, and the top roll, working like a press ram, grabs the plate’s leading edge. The right bottom roll supports the plate as it is fed into the bending machine.

The top roll pushes directly on the leading edge, leaving a very minimal flat end and deforming it to the required radius. The edge is correctly prebent because of the displacement between the roll axes of the top roll and the left bottom roll. The subsequent rotation continues to deliver the desired curve.