Voith Paper
DuoShake™
The reaction-force-free shake
DuoShake™
The success component for improved sheet formation
Sheet formation has a considerable influence on paper quality.
The DuoShake – the shake for the breast roll – ensures a more
homogeneous distribution of the fibers and a greater alignment
of the fibers in cross-machine direction. The result is better
formation and a lower MD/CD tensile ratio. Your advantage:
an overall better quality level.
DuoShake™
Breast roll
Stroke (mm)
Master
Setpoint – Position
Drive 1
Setpoint – Adjusting Angle
Drive 1/Drive 2
Drive 2
Perfect physics
Two rotating pairs of unbalance masses are
arranged on the hydrostatically supported carriage of the DuoShake. Due to the rotation,
forces are created which are transmitted with a
shake rod to the breast roll. In contrast to conventional shakes, the system vibrating freely in
horizontal direction transmits only negligibly
small frictional and centering forces to the foundation. The unbalance masses move in opposite
directions within a pair of masses and are
arranged so that the vertical forces cancel each
other out. The stroke results from the position of
the pairs of masses related to each other.
2
DuoShake™
in commercial operation
The scope of supply includes the DuoShake, an operator
terminal and the control and drive engineering integrated
into a control cabinet. Optional: connection to an existing
DCS system.
DuoShake™*
Operator terminal*
Control and drive cabinet*
Interface
Operator console DCS
Interface
* Scope of supply Voith Paper
5
Easy operation and system integration
Solved in an uncluttered manner
The DuoShake can be easily integrated into the
process without any problems.
Operation: Enter the operating point, switch on
and everything else takes place automatically.
Efficient sensors monitor the allowable operating
values. If these are exceeded, safety shutdown
takes place.
The operator terminal is ergonomically designed
and the screen form provides uncluttered information.
Faulty operation is virtually ruled out, as all settings are menu-guided. Any faults are displayed
in plain text.
DuoShake™
and what you get from it
The DuoShake allows infinite adjustment of the shake stroke
and frequency during operation of the paper machine.
There is no mechanical adjustment of the stroke, the system is
extremely robust and can be used with little maintenance.
Shaking data SKZ
Operating characteristics
25
5000
4000
3000
Shaken
mass
20
2000 kg
15
3000 kg
4000 kg
5000 kg
2000
1000
0
Stroke [mm] s
Shaking data SKZ
6000
Shaken
mass
2000
3000
4000
5000
10
5
0
150 200
200
400
600
800
1000
1200
kg
kg
kg
kg
300
400
500
600
Shake frequency n [1/min]
Production speed vwire [m/min]
2
SKZ = n x s
vwire
Drive torque:
150 Nm
250 Nm
The set of operating characteristic curves
show the operating range of the DuoShake.
Below the limiting curves, any combination
of stroke and frequency is possible.
Solid advantages
The foundation has to carry only the dead
weight of the DuoShake. There is no transmission of disturbing vibrations to the headbox and
wire section.
The design is compact, robust and encapsulated. The carriage is hydrostatically supported,
lubrication is integrated with the system and
ensured by the circulation principle.
Drive is direct by 3-phase AC servomotors,
which feature low electrical power input.
In production
After starting, first the oil supply for the hydrostatics and circulating lubrication is activated. Then
the two unbalance masses run in synchronism
and, after reaching a preset minimum wire speed,
the DuoShake runs to the preset operating
values. The breast roll is shaken, the system is
working.
3
1400
755
442,5
1290
45 +5
800
458
Max. drive torque
150 Nm
250 Nm
Shake rod force
max. 40 kN
max. 50 kN
Shake stroke
0 – 20 mm*
0 – 25 mm*
Shake frequency
150 – 500 1/min*
150 – 600 1/min*
Weight approx.
3,500 kg
3,500 kg
Energy consumption max.
3 kW
4 kW
755
1100
595
1019
R1
115
Technical specifications
790
*see set of operating characteristics
Technical specifications and representations non-committal,
subject to change without notice.
The control unit
The electrical control and power infeed unit of the
3-phase AC servomotors is housed in a control
cabinet. Via an operator terminal for console or
control center installation, the operating data are
entered and the operating messages displayed.
The components:
Programmable logic controller
Interface module for position control of
both motors
Pulse-controlled AC converter with infeed
and backfeed unit and mains filter
Control voltage supply
Switching and monitoring units.
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Voith Paper GmbH & Co. KG
Ravensburg, Germany
Tel. +49 751 83-01
Voith Paper Oy
Vantaa, Finland
Tel. +358 10 21844-00
Voith Paper AB
Djursholm (Stockholm), Sweden
Tel. +46 8 62207-40
Voith Paper AS
Lier, Norway
Tel. +47 3285-9100
Voith Paper B.V.
Vaassen, Netherlands
Tel. +31 578 579-700
Voith Paper Ltd.
Manchester, Great Britain
Tel. +44 161 643-9273
Voith Paper SAS
Orsay, France
Tel. +33 164865-570
Voith Paper S.A.
Tolosa (Guipúzcoa), Spain
Tel. +34 943 67-3799
Voith Paper S.r.L.
Schio (Vicenza), Italy
Tel. +39 0445 690-500
Voith Paper Technology
Russia GmbH
St. Petersburg, Russia
Tel. +7 812 325-8203
Voith Paper Fiber Systems
GmbH & Co. KG
Ravensburg, Germany
Tel. +49 751 83-01
Voith Paper Inc.
Appleton (WI), USA
Tel. +1 920 731-7724
Voith Paper GmbH & Co. KG
St. Pölten, Austria
Tel. +43 2742 806-2674
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Coquitlam (BC), Canada
Tel. +1 604 528-9770
Voith Paper GmbH
Krefeld, Germany
Tel. +49 2151 896-0
Voith Paper
Máquinas e Equipamentos Ltda.
São Paulo (SP), Brazil
Tel. +55 11 3944-4000
Voith Paper Automation
GmbH & Co. KG
Heidenheim, Germany
Tel. +49 7321 37-6115
Voith Paper
China Rept. Office Shanghai
Shanghai, China
Tel. +86 21 520 80388
Voith Paper Service
GmbH & Co. KG
Ravensburg, Germany
Tel. +49 751 83-2670
Voith Paper Co., Ltd.
Tokyo, Japan
Tel. +813 3277-4102
Voith Fabrics GmbH & Co. KG
Pfullingen, Germany
Tel. +49 7121 34569-400
Voith Paper Technology Ltd.
Calcutta, India
Tel. +91 33 2300-5000
info.voithpaper@voith.com
www.voithpaper.com
PT. Voith Paper
Jakarta, Indonesia
Tel. +62 21 7884 5922
Voith Paper Australia and
New Zealand Pty. Ltd.
North Ryde (NSW), Australia
Tel. +61 2 9888 9399
p 3263 e MSW/M 09.04 2.000
Voith Paper GmbH & Co. KG
Heidenheim, Germany
Tel. +49 7321 37-2752