Techno Robots Automate Creation of Mosaics
at Substantial Reduction in Cost
of Herzelia, Israel, produces mosaic murals from tens of thousands of
little tiles glued face on to 300 by 300 mm (12 by 12 inches)
transparent film sheets as a ready-to- install kit. Mosaic4u’s
proprietary technology consists of a mosaic editor and an automated
manufacturing process. The company originally assembled its mosaics
using an off-the-shelf robot but discovered that it was much too slow.
So Mosaic4u created its own robot using Blueline motion components from
Techno-Isel that fits its needs perfectly.
The custom robot operates at a speed of 2.4 meters per second yet costs
about $9,200. The new robot places 9000 3/8 tiles, enough to make a one
square meter mosaic, in about 9 hours. Two Mosaic4u technicians got the
Blueline robot working in this application in only one day. "Using a
robot to assemble mosaics from the same glass tiles makes it possible
for Mosaic4u to provide mosaics of equal quality as hand-made mosaics at
a significantly lower price," said Boaz Glass, Chief Executive Officer
Designing the mosaic
The process of creating a mosaic begins when the customer sends a
photograph or painting to Mosaic4u. Glass says that for best results
that original image should be at least 1.5 square meters (16 square
feet). When the company receives the image from the customer, it uses
special software to make several mosaic alternatives for the customer to
choose from based on the same original image. The mosaic is not intended
to be identical to the original image, but rather be inspired by it.
Mosaic murals are an ancient art form and like any art should be judged
for themselves. Mosaic4u’s technicians then make changes as needed to
the images until the customer is completely satisfied.
mosaics are manually assembled by hand by skilled craftsmen in an
extremely time-consuming and costly process which puts them out of reach
of all but the very affluent. Mosaic4u has revolutionized the mosaic
industry by using robots to produce mosaics. Use of a robot to assemble
the mosaic makes it possible to offer the product at a substantially
lower cost than a hand-made mosaic while also increasing the accuracy of
tile placement and reducing adtime. However, the company had a
difficult time finding a robot that would fit the requirements of the
The robot requirements for this application are primarily speed, low
costs and the ability to operate for millions of cycles. Most industrial
robots are designed to lift heavier weights and maintain higher levels
of accuracy than are required in this application. As a result, they are
so expensive that they would be difficult to justify here. Mosaic4u
first purchased an off-the-shelf robot but had difficulty making it work
and when the company finally did get it running it turned out to be much
too slow. The company made a comprehensive survey of industry robots but
could not find one that met its needs.
Robots meet tough requirements
Then it discovered Techno’s Blueline series of belt-driven robots which
are available in kits at a lower cost than off-the-shelf robots and can
be configured to meet the needs of specific applications. Techno's
Blueline robots can be configured up to 1550 x 2600 mm (61 x 102 inches)
of travel with maximum speeds up to 2.4 meters per second. This gives
the user a large format, high speed robot at a low price. A complete
system for $9,200.00 includes a completely assembled 3 axis robot with
travel of 1043 x 1043 x 143 mm, PCI motion controller that plugs into a
PC, power electronics assembled in enclosure with power supply and
Windows-based automation software.
Each axis is contained in aluminum
housing with a protective top cover. This allows the robots to stand up
to industrial applications. Three axes of simultaneous motion can be
provided to perform difficult multi-axis motions. chno's Cartesian
robots provide smooth and continuous motion to avoid puddling when
dispensing fluids or working with solder. The system can be mounted over
very large parts or conveyor systems. This gives the unit great
flexibility. An optional library of motion routines is available for
software development for OEM applications.
Mosaic4u purchased a Blueline robot kit and two technicians got it
working in this assembly application in just one day. The robot quickly
demonstrated its ability to assemble 1000 tiles per hour or 16 tiles per
minute, which exceeds the requirements of the application. Now, as soon
as the customer approves the computerized mosaic design, Mosaic4u’s
proprietary software divides the mosaic into 300 by 300 mm (12 by 12
inch) sheets and generates G-code programs for the Blueline robot to
automatically assemble each sheet. The robot picks each tile with a
vacuum gripper and glues it face-on to a transparent carrier sheet. Each
mosaic sheet is labeled with the mosaic sheet’s xy coordinates.
Assembling the mosaic
A typical four square meter mosaic weighs about 25 kg and fits into a
box measuring 320 by 320 by 300 millimeters. Assembly of the mosaic
murals is simple and requires the same skills required to install any
mosaic wall covering.
The company does not design its mosaics in straight rows and columns
unless requested by the customer. This means that the edges of the
sheets are not straight lines but rather consist of a step-like pattern.
This feature helps eliminate visible stitch marks between the sheets.
The sheets combine in such a way that the film edges are almost touching
each other and the tiles flow naturally from one sheet to the next.
Mosaic4u recommends that after placing each sheet the customer should
fasten it to neighboring sheets with the supplied transparent adhesive
strips that are supplied with its mosaics. The customer glues each sheet
to all of the adjoining sheets using one stripe for each stitch. After
the glue has bonded completely, the transparent sheets can be removed.
The back side of each carrier board is then glued to the wall. Grout can
be applied between the mosaic tiles if desired.
"When you look at a mosaic mural from a longer distance (2 meters away
for 1 square meter mosaics or 6 meters away for 4 square meter mosaics)
a new perspective kicks in," Glass said. "Light projection at an
appropriate angle on the mosaic creates a fascinating effect of light
and color. From a longer distance you will notice details that are not
apparent at a close distance. Our unique design software provides
three-dimensional effects that make certain image features "jump out of
Mosaic4u uses high quality glass tiles of the type that last for decades
in pools, wall coverings and other applications. The tiles are water
resistant, will not wear and will not fade even under direct sunlight.
Across the globe there are many mosaics that have survived for centuries
and even millenniums. If the customer does not like their mosaic mural,
they can return it in its original package within 30 days and Mosaic4 u
will refund the entire payment.
"Tedious to make and long lasting, sometimes image related but never
realistic – mosaics are found in many of the world’s monuments,
historical sites and contemporary buildings," Glass concluded. "A large
mosaic mural provides a unique splendor, luxury and grace unlike any
other type of decoration. The main difference between our mosaic murals
and a hand-made mosaic is that robotic assembly makes it possible to
sell our murals for considerably less. This makes it possible for nearly
everyone to enjoy the beauty of one of the oldest known art forms. The
Blueline robot has been instrumental in our ability to make mosaics
available at lower cost than ever before. It has already delivered
twelve months of flawless operation at a remarkably low price."
Photos 1: Mosaic4u is located at the “Center for the Blind” in Herzelia,
Israel. The center helps people with all sorts of handicaps. It provides
a warm environment, education, consultation and work. Mosaic4u provides
the center with production assignments that are part of their production
process. This activity contributes to the center and to Mosaic4u – a
real win-win situation with a touch of “doing right”. Haya (standing) is
an arts teacher and is dedicated to promoting her students. The students
make earrings, paintings and also mosaics.
Photos 2: The “Tango” mosaic installation was not an easy one as
Mosaic4u did it on a negative slope (under a staircase). Eventually it
was worth it.
Photos 3: This shows the Techno machine used by Mosaic4u Ltd.
Photos 4: This mosaic is undergoing a last check before being sent to
For more information contact:
Techno, Inc. Linear Motion Systems, 2101 Jericho Turnpike, New Hyde
Park, NY 11040. Phone: 516-328-3970 Fax: 516-358-2576 E-mail:
LINEAR MOTION SYSTEMS
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