safeHDDM¨ makes safety laser scanners immune to wood chippings

safeHDDM¨ makes safety laser scanners immune to
wood chippings

Stacking always results in
chippings

  • Max
    Boehme, Product Manager Industrial Safety, SICK AG, Waldkirch
  • Michael
    Bangert, Account Manager Factory Automation. SICK AG, Stans

With industrial parquet manufacturing, fine wood flooring became
affordable and available to anyone. The European parquet industry now produces
over 80 million square meters of parquet flooring every year. To achieve this figure, there are stringent
requirements for the systems used for automated wood processing: Sawdust and
wood chippings are very challenging for conventional safety sensors. They are
nonetheless expected to perform their tasks regarding
operational safety with both reliability and precision. One of the leading
parquet manufacturers in Europe, Bauwerk Parkett AG, uses the new microScan3
safety laser scanner from SICK to make a stacking robot safe.

The company manufactures
a large proportion of its range of 2-layer and 3-layer wooden parquet floors
and sports flooring at its production facility in St. Margrethen, Switzerland.
In what is known as the loading stage, the station between the parquet layer
compression and the surface treatment, a robot feeds in the parquet floorboards
by de-stacking them from a pallet. Due to space restrictions caused by a nearby
machine, it was not possible to protect the form
of doors or light grids. Since safety laser scanners, unlike light
grids, also offer rear stepping detection and therefore prevent a machine from
being restarted unintentionally, a safety laser scanner was already being used
to make the operating area of the robot safe. This safety laser scanner occasionally
reached its limits if clouds of sawdust were
created when lifting or setting down the wood. “Depending on the
intermediate goods process, chippings are mixed in from time to time. And even
if there are only a few, they tend to accumulate
over the entire pallet slowly,” explains Heinz Isele, Engineering
Manager at Bauwerk Parkett. “There are up to a hundred layers on top of each
other. This occasionally, especially at
the end, causes a small cloud of chippings to be released when they are lifted with the vacuum system, which then
triggered the scanner.” The consequence was that the availability of the system
was limited. “With the new scanner, the microScan3, we were able to eliminate
this issue ” adds Heinz Isele. The microScan3 safety laser scanner is one of a
new generation of safety laser scanners from SICK. Thanks to its innovative
safeHDDM¨ scanning technology it is setting new standards. safeHDDM¨
combines a compact design and a wide scanning range in one device. The housing
of the microScan3 is rugged, with outstanding reliability in dust and ambient
light.

Reliability through advanced technology: safeHDDM¨
scanning technology

safeHDDM¨ is based on SICK’s HDDM measurement method (HDDM = high definition
distance measurement). This method patented by SICK carries out intelligent
filtering and evaluation to deliver a measurement result that is unprecedented by
safety laser scanners. The digital filtering of
the remissions resulting in a histogram accumulation suppresses random
individual remissions, while remissions from coded pulse sequences of the
scanner are reliably detected and evaluated even with the required low signal
strengths. As a result, dust particles or contamination
on the optical interface have a considerably less negative impact on the
detection reliability and the reliable protective function. Moreover, the
parabolically shaped front screens of the latest generation of safety laser
scanners with safeHDDM¨ deflect all reflections that arrive outside
of the optical path of the laser pulses and their remissions into an optical
trap – away from the receiver element in the device. This also increases the resistance to dust and contamination of
safety laser scanners with safeHDDM¨ .

Intuitive operation

Many people assume that a high-performance safety
laser scanner would be complex to handle and operate. However, the microScan3 sets new performance standards in this
respect as well.

The new Safety Designer
configuration and diagnostic software make
configuring and commissioning the system extremely easy. Areas can be defined
freely and sent to the scanner via USB. During operation, the status
indicators, LEDs, and display are visible from several angles, even from a
distance. Together with the user-friendly push buttons on the device, the
status indicators on display allow for
simple device diagnosis and operation at all times.

“The display of the
microScan3 is also graphically better, more intuitive, and offers more
information than the purely LED-based display of the previous version. For
example, you will now see a cleaning symbol if the front screen needs to be cleaned,” explains Heinz Isele about the additional advantages.

Thanks to the use of
smart connectivity and standardized M12
plug connectors, the microScan3’s cabling is not just simple – it also saves on
connection costs. The device can also be replaced quickly and conveniently
thanks to the integrated configuration memory in the system plug.

The mounting bracket with
integrated guide rails means that the scanner can be attached and adjusted with
ease. Thanks to the proven light-metal die-cast housing, microScan3 achieves a
high level of mechanical resistance. It protects hazardous areas at loading and
unloading stations, multi-sided access points to machines and material gates,
machines in harsh environments, as well as hazardous points with an object
resolution of up to 30 mm.

microScan3 – impressive even with parquet flooring

The requirements in the wood industry are diverse and exacting. Whether
you are dealing with sawdust, wood chippings, or splinters – the new microScan3
safety laser scanner is impressive even when used with parquet flooring and
offers maximum operational safety under harsh ambient conditions. Offering 350
parquet floors in 11 types of wood, 57 colours,
with five different possibilities for surface
treatment and texture for each, Bauwerk Parkett excels in providing diverse
parquet options. At the same time, the company places value on the well-being
of customers with its conscious choice of materials that facilitate healthy
living. In its manufacturing activities, it ensures this quality by combining
technical expertise with the very latest technology. Even in Bauwerk’s modern
production facilities, there is no substitute for manual and visual inspections
by experienced staff.

Fortunately, the members of staff are well protected in the operating
area of the stacking robot thanks to the microScan3 safety laser scanner, while
the system availability has been enhanced
thanks to the state-of-the-art safeHDDM¨ scanning technology.

Images

Image: KW010.jpg

One of
the leading parquet manufacturers in Europe, Bauwerk Parkett AG, uses the new
microScan3 safety laser scanner from SICK to make a stacking robot safe.

Image: KW011.jpg

Fortunately, the members
of staff are well protected in the operating area of the stacking robot thanks
to the microScan3 safety laser scanner.

Image:
KW013.jpg

The requirements in the
wood industry are diverse and exacting. Whether you are dealing with sawdust,
wood chippings, or splinters – the new microScan3 safety laser scanner is
impressive even when used with parquet flooring and offers maximum operational
safety under harsh ambient conditions.

Image:
KW022.jpg

In what is known as the
loading stage, the station between the parquet layer compression and the
surface treatment, a robot feeds in the parquet floorboards by de-stacking them
from a pallet.

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