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Frame Structure
Distinctively designed and precisely machined, strong
and sturdy, steel frame structure completely machined on
CNC-VMC, maintains accuracy over long dependable life
and ensures less vibration even with optimum line speed.
The precise mechanical construction of each component,
which undergoes extensive tests, ensures optimum
performance and longer equipment life.
Transmission
Five drive servo driven automatic web tension control
systems : Load cell and or dancer based closed loop
Servo motor control & drive on (1) Unwind (2) In-feed
System (3) Printing Station (4) Out -feed System (5)
Rewind.
Control System
Unwinder, rewinder, common for all print units,
in-feed and out-feed are individually driven by servo
motors-drives controlled and supervised by the high
performance PLC/PPC having its own intelligent software.
‘Fiber optic bus system’ used for maintaining tight
synchronization between all the drives by providing
fast, reliable and jitter-free communication.
Operator
Interface
Master operator control panel mainly consists of touch
screen operator interface located at rewind side and
remote operator control panel located at unwind side,
facilitates easy operation from both the end
Electro-electric Edge Guiding System with Ultrasonic
edge sensor and PMDC motor.
Unwind Group
Unwind Web Tension Control by using latest generation AC
servo motor and drive. The system maintains the set
tension precisely through out the reel run. The system
mainly composed of AC servo motor and drive,
pneumatically loaded low friction dancing roller
assembly and load cell for tension feed-back.
Pneumatically expanded shafts and safety chucks to hold
the reels.
In-feed System (draw unit)
The system maintains set tension between in-feed and
first printing unit precisely and isolates the printing
unit from tension disturbance of the unwinding zone. The
system mainly composed of matt chromium plated steel
roller, AC servo motor and drive, load cell and rubber
covered nip roller with pneumatically adjustable
pressure.
Print Unit Control Panel
Each print unit control panel consists pneumatic
controls for drying hood, doctor blade and impression
rubber roller & electrical controls for manual length
and side-lay registration setting, temperature display
for drying chamber and emergency stop.
Idle Rollers
Specially designed, dynamically balanced low
friction-low inertia idle rollers made of Aluminum
alloy, mounted on low friction bearings, enhance
rotational smoothness.
Automatic Register Control System
Automatic length and side-lay register control system
with full colored touch screen operator interface
facilitates automatic mark centering and recognition.
Automatic selection of different control parameters
during machine speed changes and control parameters
individually configurable to different materials for
easy operator selection.
Doctor Blade Group
Designed to ensure a straight profile of the blade
resulting in lesser blade pressure, better printing
quality and longer cylinder life. The blade locking by
eccentric rod without tools.
The group allows horizontal, vertical and angular
adjustment for the doctor blade position on engraved
cylinder. Pneumatic doctoring pressure with adjustment
possibility from the unit control panel.
Drying System
Ink drying is obtained by blowing hot air on the web
through air nozzles. The optimized airflow minimizes
heat consumption and avoids solvent retention in the
printed substrate.
The system mainly composed of single hood drying
chambers, ventilation modules, connection ducts, central
exhaust system
Ventilation Module suitable to
send and re-circulate the process air. The module
composed of AC frequency drive controlled centrifugal
fan, thermal oil or electric heat exchanger and
necessary controls and feedback device for temperature.
Connection Ducts and piping for the delivery
and re-circulation between drying chamber and
ventilation module. Adjustment of air balancing by means
of manually operated dampers.
Central Exhaust System
composed of AC
frequency drive controlled heavy-duty centrifugal fan to
collect solvent contaminated air from all the printing
units through central duct. The ducts fitted with manual
adjustable dampers.
Impression Rubber Roll
Pneumatically operated impression rubber roller
raising lowering on precision linear bearings. The
precision linear bearings ensure smooth and precise
displacement.
Pneumatic working impression controls with
independent pressure adjustment for both the sides.
Motorized web video inspection system
Motorized web video inspection system consists of
high quality CCD color camera, Industrial PC & Monitor
(facilitates sequential inspection of the lateral and
entire print repeat of the web).
Motorized Ink Pump
Speed variable, air
motorized Ink pump on each station with ink
flow/pressure adjusting valve
Out-feed System
The system maintains set tension between last printing
unit and out-feed precisely and isolates the printing
units from tension disturbance of the rewinding zone.
The system mainly composed of matt chromium plated
steel roller AC servo motor and drive, load cells and
rubber covered nip roller with pneumatically
adjustable pressure.
Rewind Group
Rewind web tension control by using latest generation AC
servo motor and drive. The system maintains the set
tension precisely through out the reel run. The system
mainly composed of AC servo motor and drive,
pneumatically loaded low friction dancing roller
assembly and load cell for tension feed-back.
Pneumatically expanded shafts and safety chucks to hold
the reels.
Lay–on Roller Assembly
Pneumatically operated lay on roller assembly complete
with pressure gauge and regulator for control of the
pressure on the rewind reel. |