PRODUCT INFORMATION PLATE BENDING MACHINE R4C0 pages

4 rolls bending
machines – R4C type

n The comfort of a 4-roll machine with the flexibility of a 3-roll machine
n Hydraulic machines - 4 driven rolls
n Speed and position-synchronised rolls
n Prebends edges with no turning around of the plate
n Minimal flat portion of trailing ends
n Easy cone rolling - Calibration
n Pinch roll swivels out and is pressure-adjustable
n Hydraulic opening head

Capacity : 8 - 50 mm* - Useful length 4 m

Design
Design
> Mechanically welded, generously sized steel section frame
Extreme stiffness facilitates machine levelling and anchoring.
> Frame design and assembly ensure a perfect geometry
with no deflection over time regardless of load.
The wide space around the hinged bearing assembly and the
R4C 235-30 NC (US version)
(10 mm in 3m)*

retractable brake permit rolling all types of cones, providing
very good visibility.
> The full enclosure provides optimal operator and machine
component protection.

Rolls
Rolls
> A polished finish prevents damage to prefinished parts,
even parts in such highly sensitive materials as prelacquered
aluminium, Reynobond type composite materials, etc.
> Optional roll hardening ensures optimal service life, even
in the case of intensive usage on steel, stainless and high-yield
steels. Hardening methods used ensure a surface hardness of
between 45 and 65 HRC.

Prebending of strong thickness
with 4 rolls

> Rolls are high-quality steel with selected and traceable
properties.
> Rolls are shaped to application : their profile is designed for optimal results within a known capacity range to
eliminate defects at capacity limits.

R4C 350-30 NC
(25 mm in 3m)*

Functions
Functions

Information and pictures given in this document are not contractual

Series production in strong
thickness

Movement

Rotation

> The bottom rolls move independently in rectilinear guideways.

> The roll-and-bearing assembly procures maximum reliability and minimum maintenance. All roll bearings are pressure
lubricated by a central pump (manual or automatic control,
depending on model).

> Each roll is moved by two double-acting hydraulic cylinders.
> Force transmission is direct to maximise performance.
Minimum bending diameter

4 rolls design

* with S235 material

> The use of proportional valves allows highly precise control
of roll movement.
> Pinch roll pressure is adjustable while a pressure controller
prevents plate lamination.
Control of parallelism and roll tilt for cone rolling is electronic
and the pinch roll is retractable.
This system ensures optimal setup with no readjustment during operation.
This technology requires no additional mechanical means of
moving and controlling the rolls.
The absence of wearing parts significantly reduces the frequency and cost of maintenance.

> The 4 rolls are driven by heavy-duty hydraulic motors or geared hydraulic motors on the shaft ends to prevent power loss.
> Direct hydraulic roll control ensures precise workpiece movement in the machine, notably during prebending.
All hydraulic actuators are centrally controlled.
> A calibrated pressure relief device prevents overpressure of
both the hydraulic cylinders and the geared hydraulic motors
for maximum operational safety.
> At equal performance, all components (motor, pump, valves,
piping, etc) are selected for reliability.

amb PICOT - www.ambpicot.com
ZA de Charpenay 69 210 Lentilly FRANCE - Tél : + 33 (0)4 74 01 85 05 - Télécopie : + 33 (0)4 74 01 76 56 - PICOT@ambPICOT.com