Roba-Belt - MB Maschinenbau

MB Maschinenbau GmbH
Im Holze 32
32120 Hiddenhausen
Germany
Tel.: 0049 52 21 – 68 99 77
Fax: 0049 52 21 – 68 90 77
Mail: info@mb-maschinenbau.de
www.mb-maschinenbau.de
Ideas in Quality

For trials you are
welcomed in our test
laboratory.
Or you may visit us at our
exhibitions in Europe or
overseas.
Further information:
www.mb-maschinenbau.de
MB Maschinenbau GmbH
MB Maschinenbau GmbH
Founded: 1992
Founder: Ronald Busch
Gen. manager: Ronald Busch
Focus on: Construction, development,
sales and services
Production: sanding machines and
special machines for the
woodworking and metal
industry
Exhibitions
in Europe and
overseas: Ligna – Xylexpo- IWF
Company motto
„Ideas in Quality“
Company location
Nordrhein-Westfalen
Hiddenhausen, near Bielefeld
depart highway
A30 Hiddenhausen
Airports
Hannover, Münster,
Paderborn, Dortmund
www.mb-maschinenbau.de

004 –
009
012 –
015
016 –
017
018 –
021
022 –
023
Surface sanding machines
Roba-Tech (004 – 007)
Roba-Big (008 – 009)
ROB (010 – 011)
Ledge sanding machines
Roba-Profile (012 – 013)
Roba-Belt (014 – 015)
Edge sanding machines
Roba-Duplex (014 – 015)
Roba-Flat (016 – 017)
Special machines
LA-500 (018 – 019)
Profiturn (020 – 021)
Brush sanding system
MB-Flex (022 – 023)
Contents
003

004
Roba-Tech
Surface sanding machine
Roba-Tech
… operation areas
The patented Roba-Tech
principle is used for the sanding
of flat and profile surfaced
workpieces.
The rotational brush belt sanding system
for optimal processing in the field of:
- intermediate lacquer sanding
- wood fine sanding
- MDF – sanding
- metal deburring
Due to its innovative
sanding method the Roba-Tech
offers for all these areas
optimal prerequisites for
the best surface quality.
Brush belt for a gentle surface
sanding in all areas
Double brush aggregate
at the run out of the machine
Simple and clear
operating comfort
www.mb-maschinenbau.de

Machine data:
The Roba-Tech has three
programmable sanding options:
Rotation-, Oscillation- and belt
sanding function
Roba Tech
1000/2
Standard configuration
Roba Tech
1300/2
Roba Tech
1400/2
Machine lenght: 3860 mm 3860 mm 4025 mm
Machine width: 2400 mm 2400 mm 2755 mm
Machine height: 2000 mm 2000 mm 2000 mm
Working width: 1000 mm 1300 mm 1400 mm
Electrical power: 21 KW 21 KW 24 KW
Voltage: 230/400V 50 HZ 3 PH/N
PLC control system: Siemens S7
Control element: Siemens OP 7
Electrical cabinet: L=1200mm H=900mm D=400mm
Extraction hood: 3 x 160 mm + 1 x 100 mm + 1 x 125 mm
Extraction power: 8000m3/h with 30 m/sec. air velocity
(Technical details are subject to change)
Special constructions on request
Roba Tech 1300/2
The sanding belt consists of
easily interchangeable sanding
brush segments
.
Roba-Tech
… sanding method
The patented Roba-Tech
principle is essentially different
to all known sanding systems.
The sanding belt of the Roba-Tech
is equipped with interchangeable
brush segments, covers the work
piece during the complete process
period steadily and complete. This
increases the sanding effectiveness
considerably.
The Roba-Tech is equipped with
three different sanding options:
Rotation function:
The sanding belt rotates with free
programmable sanding belt- and
rotation velocities above the workpiece.
Oscillation function:
The sanding belt oscillates with free
programmable parameters above the
work piece. The parameters are set in a way
that a full 360° rotation of the belt is
guaranteed, while pieces go through the
machine.
Sanding belt function:
The sanding belt works without movement
like a wide belt sander.
The rotation-, the sanding belt- and the feed
speeds are free programmable at the PLC control
panel.
The individual setting of the machine makes it
possible to adjust all needed parameters to customer
demands. As an example it may be necessary to sand
a massive work pieces in a determined zone more
demanding or more gentle.
In this way the operator is able to program and
save up to 99 different options.
An extremely capable sanding system requires
also an effective work piece transport system.
Therefore a new vacuum transport device was
developed for the Roba-Tech. This is able to hold all
conceivable parts economically.
An ingenious channel system in connection
with the high performance ventilator and the air repatriation
system guarantees an unproblematic use of the machine.
The feed belt is absolutely maintenance free.
005

We save your
quality and
productivity.
Effectiveness
12 0
10 0
80
60
40
20
006
Roba-Tech
Surface sanding machine
Roba-Tech is assessed
many times, even in three shift
operation.
0
1 2 3 4 5 6
time
7 8 9 1 11
Roba Tech
Comparison of the
- one rotational belt with two rotational brushes 1. Basis
- approx. 1,7 m2
- 88 sanding segments
- rotating
- low
Werkstück
- lead-phase-angle of about 20°
relative to feed belt sanding belt
- positive angle relative to work piece
Werkstück
- sanding operations:
Rotation-, oscillation-, belt sanding function
- Rotation speeds
- sanding belt speeds
- free programmable rotation angles:
two sanding zones to be differently
influenced by PLC settings
- vacuum power
- feed speeds
- strip settings
- strip change interval:
only 10 % during an
interval
- high effectivity
- high feed speed
- gentle treatment on the edges
- best sanding results in the grooves
- strips go deep into the grooves
- good sanding results at the edges
- avoids totally or partly denibbed parts
- long lasting abrasives
- low temperatures
- perfect finish
- fully deburred in all areas
- always constant effectiveness (see graphic left)
Feed direction of
work piece
Zone I
Zone II
Work piece
seen from above
1.1 operation area
„in tough“ with the
work piece
1.2 head setting
1.3 Head rotation
velocity
1.4 Brush strip angle
2. Parameters
influencable
3. Results
www.mb-maschinenbau.de

sanding process
Conventional
- two or four rotational brushes
(each brush)
- 0,04 m2
- 3 sanding segments
- straight or inclined
- high
Additional cleaning brush
for the vacuum transport belt
- perpendicular relative to feed belt
- negative angle relative to work piece
(compare sketch)
- rotation speed
- feed speed
- strip settings
- strip change interval
Special vacuum transport belt
for save work piece transport
work piece
Rotation of hub
Work piece
- low effectiveness
- low feed speed
- hard treatment on the edges
- bad sanding results in the grooves
- strips „jump“ over the grooves
- bad sanding results at the edges
- totally or partly denibbed work pieces
- high consumption of abrasives
- high sanding temperatures
- „wavy“ optics of the surface
- pieces are partly not sanded
- no solution for problematic work pieces
- effectiveness is only in a short time interval constant
(see graphic on the right)
Sanding segments
Effectiveness
120
100
80
60
40
20
0
1 2 3 4 5 6 7 8 9 10 11
Time
007

Roba-Tech
Surface sanding machine
The Roba Tech sanding principle
The main idea of the Roba Tech principle is to avoid the main disadvantage of all
today known rotation brush sanding machines: Those who work normally with sanding
rolls and a diameter of about 350 mm are only in a very small area in touch with the
workpiece, about 40 mm.
Only in the vertex of the radius of the tool a sanding process is possible. To
compensate the very small sanding area normal sanding systems have to increase
their rotation speed to a high degree. Only this way they have a chance to get
nearly the same effectiveness. But this results a “hard touch” of the sanding paper
which leads to an aggressive behavior on the edges, high temperatures and wavy
optic of the material. Hurt edges and totally denibbed surfaces are often the
result.
The innovative and patented Roba Tech is equipped with a totally new
developed sanding belt containing 246 sanding strips and provides a sanding
area of approx. 1600 x 1300 mm in touch with the workpiece and more than
300 meters of sanding material on the aggregates. This is unique on the
market of brush sanding machines.
A 360 ° rotation of the sanding aggregate makes it possible to reach all
edges and corners of a workpiece.
Due to the by this means enlarged sanding effectiveness the machine is
able to get best cutting results by lowest rotation speeds.
As a result of this, low movement speeds let the sanding strips slide
gently into the milled grooves and sand them every effectively.
Many by SPS adjustable sanding options help the operator to set the
machine to his special sanding requirements.
The advantages of the Roba Tech principle summarized:
1. Large abrasives quantities make low movement speeds possible,
at the same effectiveness.
2. The rotational sanding head ensures a consistent sanding in all workpiece areas.
3. A large sanding area covers the workpiece totally while proceeding.
4. Free PLC programmable sanding parameter to optimize results.
5. A perfected vacuum system guarantees that even drawers can be feeded surely.
6. A "pulling" sanding avoids wavy surfaces and penetrates deeply into the milled
grooves.
7. The low rotational speed guarantees long abrasive lifespan because the sanding
segments do not hit the work piece edges that hard.
8. Abrasive configuration is freely eligible from the MB Flex system.
www.mb-maschinenbau.de

Example of application
Roba Tech integrated into a door production line
Roba Tech integrated into a cabinet door membrane press
production line
Roba Tech integrated into a furniture production spraying line
The Roba Tech sanding belt contains 174 abrasive segments

008
Roba-BIG
Surface sanding machine
Roba-BIG
… operation areas
The new developed Roba-BIG
brush sanding machine with its
ingenious 630 mm sanding hub
diameter is constructed for the
following fields of operation:
* intermediate lacquer sanding
* wood fine sanding
* MDF – sanding
Height setting manually
with digital counter or
with motorized height
setting
The Roba-BIG machine range is available with
different layout possibilities of the rotational
brushes. Ask for more information.
Safety devices:
Electrical door locking,
Ripcord switch at run out of
machine
630 mm diameter
about 300 mm sanding area „in touch“ with the
work piece
The Roba-BIG with dust encapsulated
machine body and electrical locking of the
doors.
www.mb-maschinenbau.de

Machine configuration
1
2
3
Easy and clear operation
panel
zone 2 zone 1
Configuration
zone 1 zone 2 1400
Type
1400
Two straight
rotational
brushes
G 1400/2 R G 1400/2 V
Two inclined
rotational
brushes (20°)
Two straight
rotational
brushes
Two straight
rotational
brushes
Two straight
rotational
brushes
GG 1400/4
R
Choose your machine layout:
G = two straight rotational brushes
SG = two inclined brushes/ two straight rotational brushes
GG = two straight rotational brushes
R = transport belt with pressure rolls
V = vacuum transport belt
special constructions on request
� Roba-Big
simply excellent!
Special vacuum transport belt
for save piece transport with
additional cleaning device
SG 1400/4
V
GG 1400/4
V
.
Roba-BIG
… operation areas
Due to the double brush
sanding aggregate
construction it is
guaranteed, that one
aggregate always works
counter clock wise, the other
clock wise.
The brush aggregate diameter
of 630 mm, only implemented by
MB Maschinenbau, makes it
possible to decrease the speed of
rotation while the dragging speed
still remains the same. This way the
disadvantages of usual brush
aggregates with lower diameters,
which have to rotate with high speeds
for the same effeciveness, are avoided.
The Roba BIG principle is easily said
in this one sentence:
Large diameter =
optimal dragging speed at the lowest
aggregate rotation and highest feed
speed possible!
Therefore best results are guaranteed.
Depending on the production parameters
and quality demands further aggregates can be
installed. To ensure better edge processing
these additional aggregates may be inclined by
20°.
As a standard design the Roba BIG brushing
machine is delivered with High Grip transport belt
and pressure roles. This constellation offers the best
costs/use effect for flat and bigger pieces.
However smaller pieces have to be sanded or the
variant is chosen with the aggregates arranged at an
angle, a vacuum transport system is required.
MB Maschinenbau guarantees effective working
and completely maintenance and wear resistant vacuum
carpet that all parts are held safely by the vacuum
transport.
All types of machines stand out due to ruggedness and
simple handling.
009

Roba-Big
Surface sanding machine
The Roba Big sanding principle
The main idea of the Roba Big principle is to avoid the main disadvantage of all
today known rotation brush sanding machines: Those who work normally with sanding
rolls and a diameter of about 350 mm are only in a very small area in touch with the
workpiece, about 40 mm.
Only in the vertex of the radius of the tool a sanding process is possible. To
compensate the very small sanding area normal sanding systems have to increase
their rotation speed to a high degree. Only this way they have a chance to get nearly
the same effectiveness. But this results in a “hard touch” of the sanding paper, which
leads to an aggressive behavior on the edges, high temperatures and wavy optic
of the material. Hurt edges and totally denibbed surfaces are often the result.
The innovative Roba Big is equipped with a totally new developed sanding wheel
with a diameter of approx. 630 mm which it makes possible to obtain a larger
sanding area (about 300 mm) in touch with the work piece and more than 250
meters of sanding material on each aggregate. This is unique on the market of
brush sanding machines.
Due to the by this means enlarged sanding effectiveness the machine is able
to get best cutting results by lowest rotation speeds.
As a result of this, low movement speeds let the sanding strips slide gently into
the milled grooves and sand them every effectively.
The Roba Big is equipped with two rotational heads, one is clockwise sanding
followed immediately by counter clockwise sanding.
Only in this way it is ensured that, independently of the wood grain
structure, all upstanding „hairs“ are denibbed.
Many by SPS adjustable sanding options help the operator to set the
machine to his special sanding requirements.
The advantages of the Roba Big principle summarized:
1. Large abrasives quantities make low movement speeds possible,
at the same effectiveness.
2. A big diameter provides more sanding effectiveness in
all work piece areas, while working clock- and counter clockwise.
3. The area in touch with the work piece is enlarged up to 300 mm
instead of the normally possible 40 mm.
4. Clockwise followed by counter clockwise sanding ensures best results.
5. A perfected vacuum system guarantees that even drawers
can be feeded surely.
6. A "pulling" sanding avoids wavy surfaces and penetrates deeply into
the milled grooves.
7. The low rotational speed guarantees long abrasive lifespan because
the sanding segments do not hit the work piece edges that hard.
8. Abrasive configuration is freely eligible from the MB Flex system.
www.mb-maschinenbau.de

Example of application
Diameter comparison Roba Big - conventional
Two inclined sanding wheels under an angle of 20°, combined
with a pressure roll plus vacuum transport system
Due to the combination of vacuum and pressure roll holding
system it is possible to feed even complicated work pieces.
Last check shows results to full satisfaction

010
(Seitenansicht) ROB
Surface sanding machine
ROB
… Operation areas
ROB the alternative
wide brush sanding machine
for a reasonable price.
Contructed for the following
operation areas:
* Intermediate lacquer sanding
* wood fine sanding
* MDF – sanding
* slight structuring processes
Easy to set pressure rolls
The ROB range is offered with several different
brush setting options.
Manual height setting with
digital counter.
On request a motorized
height setting can be chosen.
Double brush aggregate work clock
and counter clock wise,
equipped with easy to change
sanding segments via plug in system.
� ROB
simple ! – good !
www.mb-maschinenbau.de

Machine data:
The ROB 1000/2
(1300/2)
with two sanding
aggregates
ROB
1000/2
1300/2
Standard types
ROB
1000/3
1300/3
ROB
1000/4
1300/4
Machine lenght: 1225 mm 1600 mm 1900 mm
1500 mm
1500 mm
1500 mm
Machine width:
1800 mm
1800 mm
1800 mm
Machine height: 1700 mm 1700 mm 1700 mm
1000 mm
1000 mm
1000 mm
Working width:
1300 mm
1300 mm
1300 mm
Electrical power: 6 KW 9 KW 12 KW
Voltage: 230/400V 50 HZ 3 PH/N
Feed system: Roller transport or transport belt
(Technical details are subject to change)
Special constructions on request
Special constructions
Use of heavy cotton brushes working width 2 m 400 mm brush diameter
Standard machine types
The ROB 1000/3
(1300/3)
with three sanding
aggregates
Only brand name products
are used:
Klöckner-Möller, Lenze,
Siemens und
Weidmüller
The ROB 1000/4
(1300/4)
with four sanding
aggregates
ROB
… sanding method
By the double brush sanding
aggregate construction is
guaranteed, that always
one aggregate works counter
clock wise, the other clock
wise.
The standard brush diameter is
310 mm but can be enlarged to
400 mm according customer
demands.
All aggregates and the feed speed
are electronically adjustable by
inverter.
Due to the simple construction and
altering possibilities this machine
guarantees an optimal serviceability.
Depending on the production parameters
and quality demands further aggregates
can be installed.
To ensure better edge processing these
additional aggregates may be inclined by
20°.
011

ROB
Surface sanding machine
The ROB sanding principle
The main idea of the ROB sanding principle is the clockwise sanding followed
immediately by counter clockwise sanding.
Only in this way it is ensured that, independently of the wood grain structure,
all upstanding „hairs“ are denibbed.
In the main configuration the ROB machine contains two rotational sanding heads
and a pressure roll system. Set up in this way it is a solid basic layout for those
customers who wish an optimized price-performance ratio.
Due to the modular construction of the ROB series, the machine can be
configured to every customer demand. Six double sanding head machines,
machines with working width up to 2 m and machines for heavy structuring
work have been delivered by MB.
Further the machine is used for cleaning of the backsides of thermofoiled
cabinet doors and for dust removement in lacquering lines.
The simple, modular construction reduces costs and makes the maintenance
and set up very easy.
Due to the optional, very effective vacuum transport system small pieces
like drawers are no problem to be feeded through the machine.
The advantages of the ROB principle summarized:
1. Clockwise followed by counter clockwise sanding ensures best
results.
2. Pressure roll system will hold workpieces from 330 mm safely. On
request modified for workpieces from 245 mm length.
3. Vacuum transport system as an option available.
4. Very easy to maintain and set up.
5. Best offer for small investments.
6. Free setting of all rotational head and feed speeds.
7. Abrasive configuration is freely eligible from the MB Flex system.
www.mb-maschinenbau.de

Example of application
Enlarged basic version with two double head aggregates
Solid construction with five sanding heads
Machine with a working width of two meters and four brushes
Customized construction with vacuum transport and inclined
sanding heads

012
Roba-Profile
Ledge sanding machine
Roba-Profile
… operation areas
The sanding machine Roba-Profile
is constructed for wood, fine
and intermediate lacquer sanding of
ledges with brushes and compound
sanding heads.
Also appropriate for light structuring
work.
Due to the simple construction and
altering possibilities this machine
guarantees an optimal serviceability
of all its components..
According to customers
Performances a one to four sided
construction is also available.
Open operation.
Electronic regulation of all
aggregates
All aggregates to be
swivelled
(Side view)
The double brush sanding
aggregate working clock
and counter clock wise,
fully encapsulated
Solid aggregate stands
Optional in 150 mm or 300 mm
working width
Machine body in welded heavy duty
construction
(Front view)
Mature technology:
many times approved
www.mb-maschinenbau.de

The feed system consists
of gummed transport
rollers.
The lateral stops are
ball bearing subject led
and easy to adjust.
All top pressure units
are centrally adjustable.
Machine data:
Profile 211 Profile 221 Profile 222 Profile 232
Machine lenght: 890 mm 890 mm 1830 mm 1830 mm
Machine width: 1000 mm 1000 mm 1000 mm 1000 mm
Machine height: 1400 mm 1400 mm 1400 mm 1400 mm
Weight: 400 kg 450 kg 800 kg 850 kg
Working width: 5 – 150 mm
Working height: 850 mm – 900 mm
Piece thickness: 5 - 100 mm
Piece length: min 350 mm; shorter length on request
Electrical power: 2,5 KW 5 KW 5 KW 7 KW
Voltage: 230/400V 50 HZ 3 PH/N
Machine data:
Profile 233 Profile 233L Profile 243 Profile 244
Machine lenght: 2720 mm 2500 mm 2720 mm 3400 mm
Machine width: 1600 mm 1000 mm 1600 mm 1600 mm
Machine height: 1400 mm 1400 mm 1400 mm 1400 mm
Weight: 1000 kg 1000 kg 1000 kg 1350 kg
Working width: 5 – 150 mm
Working height: 850 mm – 900 mm
Piece thickness: 5 - 100 mm
Piece length: min 350 mm; shorter length on request
Electrical power: 7,5KW 7KW 9,5KW 9,5KW
Voltage: 230/400V 50 HZ 3 PH/N
(Technical details are subject to change)
Special solutions
Roba-Profile with six sanding aggregates
Legend:
O = top
U = bottom
S/R = side
right
S/L = side left
013

Roba-Profile
Profile sanding machine
The Roba Profile sanding principle
The main idea of the ROB sanding principle is the clockwise sanding followed
immediately by counter clockwise sanding: Only in this way it is ensured that,
independently of the wood grain structure, all upstanding „hairs“ are denibbed.
The Roba Profile machine in all its configurations is build for sanding moldings
found in various furniture, window and joinery companies. Solid, veneered or
lacquered.
In the main configuration the Roba Profile machine contains two rotational
sanding heads and a pressure roll system. Set up in this way it is a solid basic
layout for those customers who wish an optimized price-performance ratio.
Due to the modular construction of the Roba Profile series, the machine can be
configured to every customers demand. E.g. an eight head machine is able to
sand profiled moldings from all four sides.
Equipped with the MB Flex brush systems the machine is very easy and fast
maintained and set up for a new profile.
Divergently to the known systems based on sanding belts the Roba Profile
brush system forgive a not strictly exact setting of the aggregates.
Centralized set up for the side guides and the top pressure roll devices
make sure that even not experienced personnel is able to maintain such a
machine. In only a couple of minutes a Roba Profile is ready to
proceed.
Further on this machine type is used for intermediate lacquer sanding.
For that often feeds speeds up to 100 m/min. are necessary.
The standard working breadth is 150mm, as an option some
customers desire 300 mm.
The advantages of the ROB principle summarized:
1. Clockwise followed by counter clockwise sanding ensures best
results.
2. Pressure roll system will hold workpieces from 330 mm safely.
Piece-by-piece feeding of shorter parts is also possible.
3. Centralized set up for the side guides and top pressure system.
4. Very easy maintenance and set up.
5. Best offer for small investments.
6. Infinite variable setting of the head rotations and feed speed.
7. Tool free set up of the sanding aggregates.
8. High feed speeds are technical possible.
9. Modular construction meets every customers demand without
complicating the machine.
10. Abrasive configuration is freely eligible from the MB Flex system.
www.mb-maschinenbau.de

Example of application
Side view of the bottom and top aggregate. Here shown in the short
machine version with both aggregates one upon the other
Six double sanding heads set up guarantees best results
Customized 500 mm working breadth version
Two sanding heads set in an angle provide better
edge sanding

Roba-Belt
Ledge sanding machine
Roba-Belt
… operation areas
The Roba Belt brush belt sanding system
is a unique development of MB for
ledge and panel processing.
Operational areas are
massive wood sanding /
MDF und veneer sanding, as
well intermediate lacquer
sanding.
Linear guided
oscillation and
height setting at
the aggregate
tripod
The module system of the
machine permits to combine four
different aggregate types.
EB
Dust removal
aggregate at
machine run out
RB 300
Brush belt aggregate
for top processing
with oscillation
Transport width
200 und 300 mm with
Super High-Grip-belt
DB
Double brush aggregate can be
swivelled for side processing
RB 80/SR
Brush belt
aggregate can be
swivelled for right
side processing
014 www.mb-maschinenbau.de

Aggregate 1
Aggregate 2
Aggregate 3
Aggregate 4
Machine data:
RB - 300
EB
RB - 300
DB/R
EB
RB - 300
DB/R
DB/L
EB
Machine length: 2050 mm 2830 mm 3850 mm
Machine width: 1500 mm 1500 mm 1700 mm
Machine height: 1800 mm 1800 mm 1800 mm
Working width: 200 mm optional 300 mm
Working height: 850mm - 900mm
Electrical power: 4 KW 6 KW 8 KW
Voltage: 230/400V 50 HZ 3 PH/N
Extraction power: 3020 m3/h 4340 m3/h 5670 m3/h
Aggregate 1
Aggregate 2
Aggregate 3
Aggregate 4
Machine data:
For every machine type an EB aggregate at machine run out is
available
RB - 300
RB - 80 SR
RB - 300
RB - 80 SL
RB - 300
RB - 80 SR
RB - 80 SL
RB - 300
RB - SR
RB - SL
EB
For every machine type an EB aggregate at machine run out is
available
Machine length: 3000 mm 3000 mm 4450 mm 4450 mm
Machine width: 1600 mm 1800 mm 2000 mm 2000 mm
Machine height: 1800 mm 1800 mm 1800 mm 1800 mm
Working width: 200 mm optional 300 mm
Working height: 850mm - 900mm
Electrical power: 4 KW 4 KW 6 KW 8 KW
Voltage: 230/400V 50 HZ 3 PH/N
Extraction power: 1700m3/h 2170m3/h 3500m3/h 5670m3/h
(Technical details are subject to change)
Roba-Belt
… sanding method
Basic concept to construct this
machine was the idea to close the
gap between the brush sanding and
the traditional belt sanding.
Due to the sanding belt with its
122 easy to replace sanding
segments, the machine offers the
following advantages:
Full surface sanding in an area of about
800mm.
With a mixture of various types of
sanding strips the machine is completely
adjustable to all kind of profiles,
whether they are deeply milled or flat..
High feed speed.
Prefect surface quality.
Removes plaining mistakes.
Sanding of uneven surfaces.
High Speed sanding of water based lacquer.
Easy maintenance for setup of a new profile.
The machine is offered with different
components:
Side processing with RB80 belt sander.
Side processing with DB double brush aggregate.
Top processing with RB300 belt sander and
oscillation.
Dust removal with EB aggregate.
� Roba-Belt -
a convincing system
015

Roba-Belt
Profile sanding machine
The Roba Belt sanding principle
The main idea of the Roba Belt principle is to avoid the main disadvantage of all
today known rotational brush sanding machines: Those who work normally with
sanding rolls and a diameter of about 350 mm are only in a very small area in touch
with the workpiece, about 30 mm.
Only in the vertex of the radius of the tool a sanding process is possible. To
compensate the very small sanding area normal sanding systems have to increase
their rotation speed to a high degree. Only this way they have a chance to get
the needed effectiveness. But this results a “hard touch” of the sanding paper
which leads to an aggressive behavior on the edges, high temperatures and wavy
optic of the material. Hurt edges and totally denibbed surfaces are often the
result.
The innovative and patented Roba Belt is equipped with a totally new
developed sanding belt containing 138 sanding strips and provides a sanding
area of approx. 700 x 300 mm in touch with the workpiece and more than
70 meters of sanding material on the aggregates. This is unique in the
market of brush sanding machines for profiled moldings.
The Roba Belt machine in all its configurations is build for sanding
moldings found in various furniture, window and joinery companies. Solid,
veneered or lacquered. Especially in the flooring industry this machine is
often used, due to the very high feed speeds necessary.
Due to the modular construction of the Roba Belt series, the machine
can be configured to every customers demand, even for a four sided
sanding layout.
In the main configuration the Roba Belt machine contains one RB300
sanding head and a pressure roll system. Configurated in this way it is
a solid basic layout for those customers who wish an optimized
price-performance ratio.
Equipped with the MB Flex brush systems the machine is very easy
and fast maintained and set up for a new profile.
Divergently to the known systems based on sanding belts the Roba
Belt brush system forgives a not strictly exact setting of the
aggregates. Centralized set up for the side guides and the top
pressure roll devices make sure that even not experienced
personnel is able to maintain such a machine. In only a couple
of minutes a Roba Belt is ready to proceed.
Further on this machine type is used for intermediate lacquer
sanding. For that often feeds speeds up to 100 m/min. are
necessary and often required by the customers.
The standard working breadth is 300mm, as an option
500 mm is also available.
www.mb-maschinenbau.de

Example of application
The advantages of the Roba Belt principle summarized:
1. Large amounts of sanding paper allows high feed speeds while being highly
effective.
2. Pressure rolls feed parts from 1100 mm length safely. Feeding piece-by-piece of
shorter parts is also possible.
3. Centralized set up for the side guides and top pressure system.
4. Very easy maintenance and set up.
5. A "pulling" sanding avoids wavy surfaces and penetrates deeply into the milled
grooves.
6. Infinite variable set up of the head rotations and feed speed.
7. High feed speeds are technical possible.
8. Modular construction meets every customers demand without complicating the
machine.
9. Abrasive configuration is freely eligible from the MB Flex system.
Intermediate lacquer and sealer sanding machine
with a feed speed up to 100 m/min.
Customized version with a bottom sanding aggregate
Customized version with two RB300
aggregates sanding clock- and counter clockwise.
Side aggregates in double brush configuration.

016
Roba-Simplex/Duplex
Edge sanding machine
Roba-Simplex
Roba-Duplex
… operation areas
The belt sanding machine has been
developed for fine wood,
intermediate lacquer and
MDF primer sanding
Customers:
* joiner's workshops
* industrial plants
* wooden stairs manufacturers
* furniture front producers
The Roba-Duplex is famous for its
simple operation and optimal
results. Processing times are
essentially shortened.
Swivelling table
by approx. 10° to protect the
lower work piece edge
Roba-Duplex for edge
processing of furniture front
panels
☺ Easier
� Better
� Faster
Roba-Duplex for edge
processing of massive steps
www.mb-maschinenbau.de

Sanding area 1
Sanding area 2
Roba-Simplex
Roba-Duplex
Short description
Machine body - welded and screwed steel construction
Air cushion table - swivelling
- horizontally movable
- ergonomic and functional designs
- simplifies the handling of the work pieces and, due to the air cushion
table, prevents damages at the bottom side of the work pieces
Sanding belt
aggregate
(only Duplex)
Sanding belt
aggregate
(only Simplex)
Standard size (with lateral stop)
Length: 1800 mm
Breadth: 780 mm
Large air cushion table (with lateral and back stop)
Length: 2400 mm
Breadth: 780 mm
- equipped with 2 sanding areas with 100 mm of work breadth each
- consisting of 2 x 138 pieces interchangeable flexible
sanding brush segments
- sanding aggregate with oscillation
offers enormous advantages when sanding radius and transitions
in the edge area. It avoids sanding scratches and at the same time
increases the usage of the paper
- equipped one sanding area with 100 mm of work breadth
- consisting of 1 x 138 pieces interchangeable flexible
sanding brush segments
- manual height adjustment with crank
Blower system - increases the utilization time of the abrasive papers
considerably
Sanding belt speed
adjustment
Duplex aggregate side view:
30 mm oscillation and pneumatic
height adjustment to change
sanding area
Sanding belt aggregate
Air cushion table
Simple operation of all control
elements
Extraction hood (100 mm)
- electronic via inverter
- enables the operator to optimize sanding speed to
every needed application
Two sanding areas
Roba-Simplex
Roba-Duplex
… sanding method
The Roba Simplex/Duplex
consists of one or two sanding
areas of 100 mm.
The height adjustment is done
pneumatically in fast movement
mode.
In this machine two different sanding
paper settings can be used.
For example for rough wood sanding
a grid 120 is placed in the upper belt,
while in the lower belt contains a grid
180 for the fine finishing. The change of
the sanding areas is done by
pneumatically enforced movement with
the use of a manual switch.
That means that no pre settings are needed.
The system is based on a sanding belt system
instead of rotating brushes. The advantages
compared to rotating brushes are obvious:
The work pieces must only be pressed against
the sanding belt and not, compared to a normal
brush system, be moved from right to left
through the brush. This results in considerable lower
processing time.
017

018
Roba-Flat
Edge sanding machine
Roba-Flat
… operation areas
The Roba-Flat was developed
especially for the window
manufacturers who do
individual single piece production.
However, it also finds use
Possible implementations in all
joiner's workshops and industrial plants.
Operation areas:
* intermediate lacquer sanding
* wood fine sanding
The Roba-Flat The machine stands
out due to the simple operation
and optimal dragging results.
The time for processing is shortened
considerably.
Easy to replace sanding
segments
Two different sanding areas:
100 mm and 150 mm
for different sanding paper
settings
� Simply the best!
Easy operation
www.mb-maschinenbau.de

Roba-Flat
Short description
Machine body
Sanding belt
aggregate:
Blower system
Extraction hood
Sanding belt
speed adjustment
Minimized need of space
- welded and screwed steel construction
- consisting of 2 x 138 pieces interchangeable flexible
sanding brush segments
Working length: ca 1200 mm
Working area: 150 mm
and 100 mm
Machine seen from top
- increases utilization time of abrasives
considerably
- electronic via inverter
- enables the operator to optimize sanding speed to
every needed application
Special construction
for the processing of round milled pieces
Roba-Flat
… sanding method
Roba-Flat sanding
solution for single piece
window frame production.
The system: single pieces,
treated with a complete
dip impregnation reach at the
end of the plant its removal and
final check place.
Parts are manually taken off
the plant and checked.
Work pieces with slightly
rough areas caused by the different
quality of the wood or milling tools
must be sanded.
That’s where the Roba-Flat is used:
The employee, since he holds the
work piece already in his hands, can
use the simple Roba- Flat method
to get an optimal sanding result.
The flat parts of the work piece are sanded
in area 1 with the short sanding paper.
This area is 150 mm wide.
The side mouldings are sanded in area 2
since the slim slotted paper is able to get into
the depths easily.
This area is 100 mm wide.
In this way the four-sided dragging process
lasts only a few seconds and does not strain the
employee due to the ergonomically favourable
form of the "lying" dragging aggregate.
A simple, very effective method, that the budget
won't charge excessively.
But the Roba Flat has also its rights in the skilled
crafts and industrial plants: Its construction makes it
possible to sand a big variety of parts of the production
fast and clean. 3 D formed, moulded and small
portions are no problem for this machines, the two
dragging areas can be set up according to
customer needs.
019

020
LA-500
Glue application
LA-500
… opearation areas
Glue application system
LA-500 was developed for the
wood window producers.
It guarantees absolutely perfectly
glued connection of parts, is easy
to operate, with low maintenance.
* wooden window production
* gluing of slit and cone
connections
LA-500 – The problem solution for
automatic gluing of slit and cone connections
of wood windows
Two pieces glued in the
same process
Simple and open operating
panel
� Many times approved and
recommended by our customers –
LA-500
www.mb-maschinenbau.de

The LA-500
is available in
different sizes:
2, 3, 4, 5 or 6 work
stations
example:
LA-500/4
4 stations for
- window casements
upright and
crosswise
- window frames
upright and
crosswise
The valve block has three separately
adjustable tax valves
Cleaning is done weekly and only takes
about 10 minutes.
For this reason every valve block is equipped
with a glue supply and a water cleaning
connection.
Completed gluing tool
The two part gluing tool has
three main channels connected
with a valve block. In this way
every channel can be provided
with the needed glue separately.
So every kind of gluing can be
done specifically and
independently.
LA-500
… gluing operation
Advantages:
- Gluing tool rest in a water base,
no drying and blocking of channels
possible
- separately adjustable
- two pieces glued in one process
(operation time about 3 sec.)
- weekly cleaning efforts about
10 minutes
- save processes, even after years
- recommended by our customers
- easy to replace tools for different
profile layout
� LA-500 –
The best you can find
021

022
MB-Flex
Sanding brush system
MB-Flex
… operation areas
The sanding brush system is used
or wood fine sanding, intermediate
lacquer sanding and polishing of oil
and wax applications.
The sanding brush consists of a core
which is able to take the sanding
segments in its keyways.
The core itself is not a subject of wear
can be set up for new
configuration.
Core types MB-Flex
Top-sanding quality for lowest costs possible!
Core length can be produced according
customer requirements
Core bore to customer requirements
Core diameter 110 mm/24 segments
Core diameter 160 mm/36 segments
Core diameter 280 mm/54 segments
Due to the pluggable brush system different sanding
segments can be mixed with different slit breadths.
With this possibility the customer can produce a
sanding brush, which is suitable for a large work piece
spectrum and different requirements.
It is important to avoid different slottings
impede each other: It is always necessary that the
small and wider slottings are placed in six piece
packages into the core.
www.mb-maschinenbau.de

Sanding height setments and application recommendations
Operation area
30 mm Wood sanding
45 mm Wood sanding
60 mm Wood and
intermediate lacquer
sanding
Help for the right adjustment of the segment slotting
slotting:
Performance
Very tough
Tough
Middle flexibility
75 mm Lacquer sanding High flexibility
Slotting breadth S (mm): 0, 4, 5, 7, 10, 15, 20, 25, 35, 50, 100
Slotting types B + C are slotted at an angle.
That’s why they are helpful if work pieces with rounded edges
are processed. They are set alternately into the core.
Slotting: 15 mm
Grid recommendations:
Sanding of hardwood: K80 - K150
Sanding of soft wood: K150 - K220
Lacquer sanding: K180 - K400
Sanding paper recommendations:
Aluminum oxide: for wood fine and lacquer sanding
Silicon carbide: for lacquer sanding
MB-Soft foam support brush
offers best results while
sanding profiled parts
Slotting options:
Which slotting is chosen depends
on the profile layout.
If a work piece with a milled groove
of 8 mm has to be sanded, the
slotting has to be smaller (5mm).
Flat work pieces should be sanded with
a slotting of 20 mm or wider.
If an edge is damaged in the process
of lacquer sanding of flat pieces, the
slotting width has to be reduced.
�MB-Flex
we reduce your sanding
costs!
023

www.mb-maschinenbau.de
☺
MB Maschinenbau GmbH
Im Holze 32
32120 Hiddenhausen
Germany
Tel.: 0049 52 21 – 68 99 77
Fax: 0049 52 21 – 68 90 77
Mail: info@mb-maschinenbau.de
Ideas in Quality