Mašina za savijanje lima - 4 valjka

DAVI MCA 3022

sheet width 3100 mm
plate thickness 9 mm
pre-bending 6 mm
diameter of upper rolls 220 mm
diameter of lower rolls 200 mm
side roll diameter 170 mm
min. dia. 250 mm
roll speed 6 m/min
total power requirement 10,3 kW
weight of the machine ca. 4651 kg
dimensions of the machine ca. 4915 x 1120 x 1235 mm
Features

- Machines include the following DAVI standard specification:
The components of the machine structure
(machine stand, frame and swivel bearings, etc.) have been calculated and
designed to withstand the loads required for the applications
and performance levels. The robust and heavy-duty machine construction absorbs
the loads generated during
the bending process without transferring them to the foundation.

- High-quality surface finish:
For forming delicate surfaces and/or soft materials without leaving marks
Hydraulic-mechanical parallelism system, supported by
electronics for fine-tuning.
There are two
INDEPENDENT & SYMMETRICAL hydraulic circuits for the left and right
cylinders of each roller.
The oil flow is regulated by two DOUBLE PUMPS, which are mounted on the
same motor shaft and are fully synchronised.
The two symmetrical hydraulic circuits move the cylinders and supply
the rollers with the SAME amount of oil in a fully synchronised manner.
Electronic control is activated only for extremely precise
fine-tuning.

- Smooth transmission of the drive

Both the hydraulic motors and the gearboxes (top and bottom)
can follow the deflection of the roll
without load when bending narrow sheets.
This ensures perfectly symmetrical deflection of the rolls under load.
This system also allows the rollers to deflect freely,
without the risk of breakage under excessive load.

- ‘Roll-by-Wire’© digital technology

Since 2004, DAVI has revolutionised the way sheet metal rollers are wired
(similar to ‘fly-by-wire’ technology in the aerospace,
FMS and automotive industries) and introduced ‘Roll-by-Wire’ technology.
This allows the entire control system of the roller to be controlled via digital
signals rather than, as was previously the case, via numerous relays and contacts.
Digital technology is much faster and more reliable.

Action Benefit

Reduction in the number -> Reduction in potential
of components component failures
Very compact design -> Improved accessibility for
maintenance work
Improved accessibility for -> Damaged parts can be identified
maintenance work more easily

More reliable -> Greater accuracy thanks to the use
of ‘digital signals’

Permanent lubrication technology

The lever-arm feed system eliminates all linear friction during the movement
of the side rollers, as the roller support arms, which house the bushings,
rotate simply and smoothly around two large, strong pivot points made of alloy
steel, ensuring precise and friction-free rotation. This guarantees reduced
wear and safety during unlimited use.
Further advantages of the lubrication-free lever-arm feed mechanism are:

•NO daily maintenance required (lower operating costs).
•More production time available.
•The bearings are sealed to protect against scale, dust and rust

- Hardened rollers

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•Excellent heat tre...