Nipco Soft Calender
Nipco Soft Calender
Nipco Soft Calender
August,14, 2014
Content
Overview: .......................................................................................................................................................... 1
1. Technical parameter .................................................................................................................................... 2
2. Function description .................................................................................................................................... 4
3. Configuration and scope of supply ........................................................................................................... 9
4. Main purchased parts ............................................................................................................................... 17
5. Spare parts list ........................................................................................................................................... 18
6. Special tools ............................................................................................................................................... 19
7. The documents to be submitted .............................................................................................................. 20
8. Power, oil, water and compressed air consumption ............................................................................ 21
9. The professional service and price ......................................................................................................... 22
10. The pictures for reference ...................................................................................................................... 24
Overview:
The nipco soft calender adopts the last advanced technology in the world wide, including the hydraulic
pressure loading system, multi-zone nip correct technology, hot oil heat conducting and circulating system,
PLC control system etc. Nipco soft calender is designed for high quality calendering for various kinds of
papers, the Nipco rolls are used as deflection compensation for improving the profiling the paper web.
Herewith the soft nipco calender is designed for grey back and white top coated board.
The high product quality depends on the uniform CD profiles in the paper. When the coating machine is
running, the hard roll and soft rolls will be loaded together with high linear pressure. After that, the rolls will
deform on some extent due to high pressure load. The solution for this problem is that the camber of nipco
roll can be segmentally adjusted, so that the equipped oil-filled pressure unit in the soft roll carries out the
deflection compensation for the calender rolls. The deflection compensation between the calender rolls can
ensure the uniform linear pressure in the nip over the entire width of the paper web to ensure optimal
Nipco calender can correct caliper variations of the paper web with good benefit in cross-machine direction.
The Nipco profiling rolls with Nipco technology were developed for the systematic correction of long-wave
and short-wave CD profile deviations. Zone-controlled Nipco rolls are ideal equipment for the long-wave
range. In addition, Nipco rolls also correct short-wave CD profile distortions by means of individually
1. Technical parameter
1.1 Product parameter
g/m2
4400mm
4460mm
Installed in two layers, left hand driving (viewing from Winding stand to
1.2.1 Model: 2 rolls on-line soft calender, single side calendering, hot roll mounted on upside.
1.2.2 Nipco soft roll: Segmentally control camber, The dimension of the soft roll6574500mm
1.2.3 Hot roll: With borehole drilled along the roll shell periphery
Dimension of the hot roll: 8004750mm
1.2.4 Paper width: 4460mm
1.2.5 Gauge of calender: 5600mm To be confirmed)
2
Heating system:
20-200n/mm.
max180.
2. Function description
This soft calender is 2 rolls on-line Nipco soft calendar, and the camber can be adjusted segmentally. The
CD variation of the paper web can be regulated finely via calendering by the nipco soft calender. The high
temperature of the hot calender roll can achieve better effect of final paper. As the two part of linear pressure
and hot roll temperature could be controlled separately and accurately, that makes the surface of finishing
paper is improved. The two side difference and CD variation is very small. The using of the segmental nipco roll
and imported covered rubber, also oil heating system, hydraulic system, electronic control system and bearing
sealing elements all are collected form the top international brand suppliers. The configuration and
2.1 The soft roll is multi-zone adjustable camber roll with 9 zones.
The thickness of the coated composite rubber is 13.5mm, hardness is 911shored. Roughness Ra0.4
The crown can be regulated precisely so as to get the perfect calendering effect. Through button screen,
the operator can adjust the camber segmentally and control CD parameter of paper web in good condition. It is
2.2 Hot roll consist of roll body as middle part and journals of both ends.
The roll body is drilled borehole along the shell. The hot oil heating is designed for temperature control.
The double pass hot oil rotary joint is installed on the driving side. The roll surface temperature can be adjusted
by the hot oil temperature control.
Hot roll is equipped with oil heating and linear control system for oil temperature. Gas heating oil furnace is
equipped with spare high temperature circulating pumps. The power of heating system is about 200kw for hot
roll. This system has high precision of control, long service life. The control of heating and cooling speed is in
linear way. The Speed is 1/min, ensure the safe operation of equipment.
The optimized design can ensure the high efficiency of heat, high temperature hot conductivity and
insulativity. The system is equipped with overheat, overpressure, pressure difference, low liquid level protection
mechanism.
2.4 The nip closing, pressure loading and unloading control system
The top roll of the calender is fixed. The nip closing, pressure loading and unloading of the calender roll is
performed by the hydraulic cylinder under the bottom roll. First feed paper web when the calender rolls open,
and then the calender nip closing is controlled by the high-precision hydraulic and servo synchronization
control system to perform the nips loading. The nip linear pressure can be continuously adjusted on the
operating panel with digital display. The two bottom cylinders is controlled by logic program can perform the
bias operation reasonably. When the paper web breaks, the two calender rolls will automatically be released.
The crown is adjusted with automatic tracking according to the set line pressure by programmable control
system. At the same time, the crown of a certain section can be individually adjusted according to the press
situation to achieve a satisfactory calendering effect. The oil pressure of the bottom cylinder and the crown
controlled roll can be adjusted with continuous automatic tracking according to the set line pressure. It can be
sub-controlled and the lateral index of the paper can be controlled conveniently and precisely. That could
ensure the calendering effect. When the paper web breaks, the calender rolls will automatically be released.
The hydraulic system is equipped with backup pumps, motors, oil filters and oil temperature control
system, and adopts the efficient energy-saving design with lower power consumption, longtime service life and
good reliability.
Including converter motor, coupling, gear reducer, universal coupling, controlled synchronous belt
transmission device, install pedestal etc. Each calender roll is equipped with 1 set of driving system. The
transmission motor control of calender roll, arc roller is designed by the seller.
Hot roll driving motor power: 1X55kw.
All of the operations are carried out on the electrical-control operation panel and operator station. The
system is equipped with PLC control, the operation panel with color touch screen, as well as other relevant
instruments, buttons, switches, indicator lights, etc. And the interface is arranged for the future integration with
2.8.1 The drive motor of the calender roll will not start without the oil pump motors of the hydraulic stations
running.
2.8.2 If the nip is not close, the speed of calender roll driving motor is controlled synchronized. After the
2.8.5 The temperature monitoring, temperature difference control, alarm and safety protection are
2.8.6 The hydraulic system is equipped with oil level alarm and filter block alarm, interlock controlled with
2.8.7 Oil temperature auto control and alarm are available for hydraulic system.
2.8.9 Bearing thin oil lubrication alarm is equipped for hot roll.
2.8.10 The complete protection and alarm system, fault monitoring, and acoustic and optic alarm, short
circuit, overcurrent, over-temperature, over-pressure difference for oil, and overload protection for oil pump.
1set.
Roll shell:
Stowewoodward
Bearing:
Support stand:
2 sets
Support material:
Installing position:
Driving device:
timing belt drive, big belt wheel is installed on the shell, universal coupling,
Weight(including support ):
Type
Dimension:
Bearing house
110500kg.
1set.
Borehole drilled along the periphery of the shell, roll steel forged.
8004700mm
2sets.
Bearing material:
Bearing:
Heating system
Rotating joint
Installation
Driving motor
1X15500kg.
Type:
Nip close:
1set.
Type:
Fixed camber, rubber covered. The direction can be adjusted manually. Equipped
Others:
2404700mm.
Installing support 2sets. Motor support 1 set. Small belt wheel device 1 set.
Transmission:1X4KW converter motor, triangle belt transmission. The electronic control is equipped
3.6 Doctor
2sets.
SS steel
Configuration Form
Application
Quantity
Scraper blade
Carbon Fiber
Swing
AC motor
Seller supply the air pipe, and connected to the air control box on the frame.
3.8 Soft roll cooling and air blowing system in two side
1set.
Air source: 1 set of converter motor, including electronic control. Buyer supply.
11
The pipeline from fan to body: 1 set, buyer supply, and connect to body interface.
Driving type: hydraulic cylinder, the stay time is adjustable on both ends
1set.
Heating type:
Heating medium:
brand.
Heat Source:
natural gas
Composition
Hot oil piping system: supplied and installed by buyer, seller provide the technical guidance.
Cooling water pipeline: supplied and installed to the specified interface by buyer, the seller provide
technical guidance.
Electric Wire & Cable: power cord and control line of hot oil system supplied by buyer, the seller provide
installation guide.
3.11 Soft roll hydraulic control system: 1 set. Pumping station and valve stand share it.
Features: Constant pressure variable proportional pressure control system, with spare motor, oil pump, oil
filter. And also equipped with hydraulic oil temperature automatic control system and electric heater. Automatic
interlock protection
Body material:
Oil tank:
Hydraulic piping system: 1 set, including pipe joint, steel pipe, hose, pipe clamp. The seller supply it and
To be supplied and installed by the buyer, including pipe, joint, valve and
13
Application: The nip closing, pressure loading and unloading of the calender roll.
Type: Constant pressure variable proportion and servo control system, with spare motor, oil pump, oil filter.
Body material:
Oil tank:
Hydraulic piping system: 1 set, including pipe joint, steel pipe, hose, pipe clamp. The seller supply it and
To be supplied and installed by the buyer, including pipe, joint, valve and
Content:
1set.
Calender control cabinet, host computer, operating panel (SS material, including
PLC touch screen). The interfaces related to the paper machine production line control are available.
Electric Wire & Cable: The electric wire & cable which connect hydraulic pressure station, PLC control
cabinet, operating panel should be supplied by buyer, the seller provide installation guidance.
on soft calendar.
Application: Pneumatic control, cooling water, thin oil lubrication and heat oil pipe line.
Material:
Low-carbon steel
Scope: The cooling water pipe is connected to the hydraulic station cooler, hot oil station cooler and the
reducer cooling water tubes. Thin oil lubrication connected to the hot roll bearing base and small belt pulley
bearing house. The compressed air connected to the operation panel and pneumatic control box.
Type:
Material:
Low carbon steel, welding, stress-relief annealing, sandblast, antirust painting, CNC
machining.
Material:
3 sets.
Material:
2 sets.
CNC machining.
3.16 The driving devices of the Calender roll: 2 sets, including motor, reducer, universal coupling
and coupling sleeve, should be supplied by the buyer
Other transmission:
Coupling sleeve 4 pieces, transmission base 2 pieces, Shield, anchor bolt, etc.
16
Sl. No.
Name
Hot roll
Rolling bearing
Supplier
Remark
Stowewoodward
SKF/FAG
ATOS
Italy
Pressure sensor
ATOS
Italy
Position sensor
Balluff
Germany
MERKELFP
Germany, Italy
PARKEREMB
U.S.A
Maier
Germany
JM
Germany
JMSR
Germany
ARI
Germany
tube
10
11
12
Nonlinear Adjuster
13
14
15
16
PLC
17
10 touch screen
18
U.S.A
19
U.S.A
20
Low-voltage components
21
Suzhou jinggang
Japan
22
Shanghai Fulong
China
23
Hydraulic components
Taiwan
KSB
Germany
SIEMENSS7-300
Germany
SIEMENS
Color
ABB
17
Sl.No.
1
2
3
Item
Timing belt
Rotary oil seal
Specification
20M
Qty
1
4
Filter
18
Used for
Soft roll drive
Nipco soft roll
Hydraulic
system
Remark
Shanghai Fulong
Italy
China hytek
6. Special tools
6.1 1 set grinding tools for Nipco roll
Including connection chuck 2 sets, taper sleeve 2 sets, bolts etc.
2pcs
19
20
8.1.1 Driving motor for calender roll, arc roll, guide roll:130kw
8.1.4 Others10kw
8.2
8.3 The total cooling water consumption for hydraulic system, reducer, and hot oil system: according to the
design.
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9.1.1 after the contract entering into force 90-120 working days Qingdao Focus Paper Co., Ltd should finish the
9.1.2 Qingdao Focus Paper Co., Ltd will offer design paper of equipment, the introductions, Spare parts table
9.1.3 Qingdao Focus Paper Co., Ltd is responsible for the local suppliers within the scope of mechanical,
electrical installation and commissioning of the guidance, while the buyer is responsible for the installation
experts.
9.1.4 Qingdao Focus Paper Co., Ltd is responsible for the guarantee of quality, and provide the necessary
9.1.5 Qingdao Focus Paper Co., Ltd. will dispatch 2-4 engineers to guide the installation and commissioning
and give the local workers training for system operation. The Buyer will afford the double fly tickets and the fee
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Skype: focuspaper
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