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GENERAL DESCRIPTION
UFlex Duplex Slitter, Model: Eco Slit450 is equipped with vector grade Digital AC Drives and Asynchronous servo motors with Duplex Rewinder And Pneumatic disc brake for unwinder with the purpose of Slitting and Rewinding Printed or Unprinted Flexible Laminates.
` GENERAL SPECIFICATIONS
2.1 Machine Name UFlex Duplex Slitter
Rewinder -1000
2.2 Maximum Web width 1000 mm
Minimum web width as desired.
2.3 Unwinder
ð Maximum Roll Diameter 800 mm
ð Inside Core Diameter 76/152 mm
2.4 Rewinder
ð Maximum Roll Diameter 550 mm
ð Inside Core Diameter 76 mm
ð Maximum Width 1000 mm
ð Minimum Width 50 mm (25mm available as optional)
2.5 Mechanical speed 450 MPM*
2.6 Typical Material Range Hard and soft film, papers and laminates (From 12Micron to 150Micron)
2.7 Drives:
AC vector grade digital drives and Asynchronous servo motors for main and rewinders.
Pneumatic brake for unwinder.
2.8 Max. Noise level at ground
level around the Machine 80 dBA at 1 Mt.
2.9 Electricity Rating
ð Electric Supply Voltage 415 V + 10%, 50 Hz + 2%, 3 Ph
ð Control Voltage 220 V AC
ð Total installed Electric Load 26 kW (approx.)
2.10 Air
ð Air Pressure at Machine Min. 6 Kg / cm2
ð Water Content Below 0.01%
ð Max. Air Consumption 10 M3 / Hr
* Dependent on Material Type and Gauge, Slitting Width and Core quality.
COMPOSITION OF THE MACHINE
The following is a comprehensive list of major items of supply:
3.1 FLOATING UNWIND STAND
One (1) only floating unwind with pneumatic brake arrangement for reel spool. High precision owing to use of linear motion bearing operating through actuator.
One (1) only line guide unit with Photo sensor is supplied to tackle badly wound parent rolls
(for description and operation, see section 4.1)
3.2 UNWIND TENSION CONTROL SYSTEM
One (1) only Auto tension controller by electronic radius measure system is supplied to control web tension between unwind and pull station. The tension selection is available on the unwind control.
Necessary operator panels provided at unwind station for easy of operations.
3.3 PULL UNIT
One (1) only Pull Roller, Independently driven by a digital AC drive and Asynchronous servo motors, and nipped by a pneumatic pressure roller.
(for description and operation, see section 4.3)
Slitting Station
One (1) only blade holder assembly with one number of groove roller along with one (1) only Roll system to Transport slit web to rewind spools. Flexible to adapt to top and bottom knife cutting system (Feature available as optional)
(for description and operation, see section 4.4)
Duplex Rewinder
Two (2) only Rewinder Stations both of them powered through individual Asynchronous servo motors Upper and lower rewind shafts are held rigidly on front support assemblies mounted on rewind arm support and actuated through pneumatic cylinders. A trolley is supplied to hold rewound rolls during unloading
(for description and operation, see section 4.5)
3.4 DRIVE SYSTEM
Asynchronous servo motors and AC vector drive system with unwind tension control.
3.5 TRIM REMOVAL
One (1) Trim removal arrangement is supplied with the machine.
3.6 MISCELLANEOUS
a) Two (2) sets of electrical drawings complete with parts catalogue
and recommended spare parts.
b) All necessary drawings and information required for installation of the
machine and connection of all services to the machine.
c) Two (2) sets of operator's manuals
d) Two (2) sets of maintenance manuals.
e) Two (2) sets of detail drawing of rubber rollers.
f) A tool kit with all necessary tools required to operate the machine.
DESCRIPTIVE SPECIFICATIONS
4.1 FLOATING UNWIND STAND
Floating Platform
The unit consist precise machined side frame, which are mounted on two grounded shaft through highly precise linear motion bearings. Unwind unit oscillate through actuator and line guide system to positioned unwind as per the telescopic. A lead screw driven by the geared motor is provided for shaft less chucking and unchucking of the parent roll.
Breaking device is positioned with drive side frame.
Line guide with colored background.
4.2 UNWIND TENSION CONTROL UNIT
The web passes over a roller arrangement positioned between the unwinder and pull unit. With the help of unique electro radius measuring system, torque applied to unwind roll is kept on changing, based on diameter to maintain the set web tension in the zone.
4.3 PULL ROLL UNIT
Rubber pull roller, driven by independent AC motor (which acts as a master drive) on which a rubber pressure roller is nipped by adjustable pressure. The unit isolates unwind and rewind tensions. Individual pressure regulator are provided to differentiate the both end pressure of Nip roller.
4.4 SLITTING STATION
This station consist of one grooved roller positively driven and are located in
Such a way for easy survey of slitting operation. The blade holder assembly is pivoted
about a fixed position and can be swing into and out of engagement. The arrangement can be made for kiss shear knife slitting with appropriate shear knives at an extra cost. The desired slit width is set by sufficient number of blade holders provided with the machine.
Slit webs are transported on one number of take off rollers to rewinder.
4.5 DUPLEX REWINDERS
Alternate slit webs are then led to two (2) rewind differential shafts are driven from individual Asynchronous servo motors to give drive to each spool. An ultrasonic sensor always track for the changing roll dia and help in maintaining the roll spool surface speed with respect to main master drive. Direction is reversible to allow the material to be rewound with printing inside or outside of the rewind package. The lay on roller pressure on rewind web is pneumatically adjustable.
4.6 Slit roll removal trolley: A trolley is provided with the machine, which mounted near to rewind unit for removal of the ready rolls from rewind shafts.
4.6 DRIVE SYSTEM
An AC digital drive system ensures ultimate control of web tension through all the tension zones.
The location of Three AC motor is:
i) One (1) Pull Station Motor (Main Drive)
ii) Two (2) rewind drive motor.
4.7 SCOPE OF SUPPLY
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ITEM
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DESCRIPTION
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STANDARD
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TOTAL
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1
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NIP ROLLER
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1
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1
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2.
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LINE GUIDE
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1
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1
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3.
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ROLL UNLOADING TROLLEY
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1*
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1
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4.
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BLADE HOLDER
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10+2*
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12
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5.
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DIFFERENTAIL AIR EXPANDING SHAFT
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2
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2
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6.
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FRICTION RING
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22
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22
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7.
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TUBE FOR FRICTION SHAFT
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2+1*
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3*2=6
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8.
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TIMING BELT SET
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1+1*
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2
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9.
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SOLENOID VALVE (SINGLE COIL),220V
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6
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6
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10.
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REGULATOR AR-20K
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8+1*
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9
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11.
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TRIM BLOWER
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1
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1
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12.
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MAINTANANCE AND OPRATIONAL MANUAL
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1*
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1
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13.
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TOOL BOX
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1
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1
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14.
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SET OF TWO CONES FOR PAPER CORE 3”(76mm)
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1set
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1set
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15.
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SET OF TWO CONES FOR PAPER CORE6”(152mm)
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1set
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1set
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QUANTITIES MARKED WITH (*) ARE INCLUDING IN THE SUPPLY AS ADDITIONAL EQUIPMENT.
4.8 OPTINAL FEATURE:
1.Laser light system for positioning of core at rewinder.
2.Min slit with up to 25mm.
3.Top and bottom knife shaft for rotary cutter.
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