Speed’sealer sealing robot: new dynamic mixer system

Date: 1 December 2011
Copyright:
  • Klaus Puschmann - Bystronic Lenhardt GmbH

Date: 1 December 2011

Klaus Puschmann, Product Manager at Bystronic Lenhardt GmbH presented a paper on the new dynamic mixer system of the speed’sealer sealing robot which was designed to overcome the limitations of static mixer systems.

With state-of-the-art systems the volume flow of the sealant material was not sufficient enough for large sealing depths or widths and due to high system pressure there was no chance to enlarge the volume flow considerably with the static mixing system. With the increasing share of triple glazing, the sealing robot got more and more a bottleneck in the production.

The rapid growing share of triple glazed IG units in the production mix of insulating glass manufacturers resulted in a lot of requests for speeding up insulating glass lines. The customers wished to have the same production speed for triple insulating glass as they have had before for double insulating glass. This should be possible without enlarging the production line and without loosing flexibility.

Therefore it was necessary to find a solution for providing a higher material volume for the sealing robot, which is seen as the biggest bottleneck in the production. The result was a complete new dosing and dynamic mixing system for the sealing robot, which was able to overcome the limitations of a static mixer.

The static mixing system

The state-of-the-art mixing system so far for sealing robots was the static mixer. The number of cross bars in the mixer determines the mixing quality and the pressure drop of the system. The increase of the volume flow is limited by these restrictions. For the speed’sealer is was necessary to introduce new dynamic mixing elements which are offering a higher volume flow and reducing the material pressure at the same time.


Figure 1: Mixing maps in static mixers with different cross-bar number


Figure 2: Pressure drop ratios for different cross-bar number

The dynamic mixing system

The dynamic mixer has a motor-driven mixing element, which rotates at a regulated speed in a mixing chamber. The active mixing is a bidirectional process: parallel and cross the material flow direction. The mixing element itself is not hollow and looks like a driller. The dosing is done by two gear pumps and with the pressure and temperature sensors we learned how the system had to be adjusted for optimum results.


Figure 3: New dynamic mixing and dosing system

Click to enlarge
UserFiles/Bystronic glass Sealing_Fig03big.jpg

The new dynamic mixing system shows an increased volume flow up to factor 4 compared to a static mixing system. At the same time the comparable system pressure is only a quarter of the one of the static mixer.


Figure 4: Material pressure of 2K-Silicone

Click to enlarge
UserFiles/Bystronic glass Sealing_Fig04big.jpg

An experimental examination of the “Institut für Kunststofftechnik” in Stuttgart comparing different shearing and mixing elements for single-screw extruders shows that the mixing quality is  more homogeneous when using the dynamic mixer instead of a static mixer.


Figure 5: The visible result of the mixer comparison of “Institut für Kunststofftechnik” in Stuttgart

The Bystronic glass speed’sealer is establishing a new benchmark in sealing quality and sealing speed due to its dynamic mixing system which is unique for sealing robots in the insulating glass industry. Therefore it suits very well to the increasing number of triple glazed IG units as well as façade elements, where a high material volume is needed. The output increase is up to 130% compared to a static mixing sealant robot:


Figure 6: Output increase with the dynamic speed’sealer

Click to enlarge
UserFiles/Bystronic glass Sealing_Fig06(1).jpg

The speed’sealer combines unique characteristics with the dynamic mixing system:

  • Best mixing homogeneity (according to independent analysis)
  • Maximum volume flow of 6 litres/minute, independent of sealant material
  • Highest application speed of 60 meter/minute
  • Minimized material pressure of the sealant components

References

[1] S. Liu, A.N. Hrymak and P.E. Wood, “Laminar mixing in SMX Static Mixer”, Department of Chemical Engineering, McMaster University, 2005
[2] E. Grünschloß und L. Gunning, “Comparative experimental examinations of different shearing and mixing elements for single-screw extruders” IKT, 2009

Website:

www.bystronic-glass.com/speedsealer

About Bystronic glass

Bystronic glass is the most competent and reliable partner for services, machinery, plants and systems in the glass processing sector. Bystronic glass supplies its well-proven machine technologies also in important areas of the photovoltaic industry. This includes preprocessing, front-end and back-end solutions. Bystronic glass is an international brand with globally operating companies that support their customers on site and through own sales and service companies. Since 1994, Bystronic glass is part of the Conzzeta AG, a renowned Swiss industrial holding company.

Klaus Puschmann - Bystronic Lenhardt GmbH

Bystronic glass media contact:

Iris Minten
PR / Online Communication
c/o Bystronic Lenhardt GmbH
Karl-Lenhardt-Str. 1-9
D-75242 Neuhausen-Hamberg

Phone +49 (0)7234 601 120
Fax +49 (0)7234 601 114 

iris.minten@bystronic-glass.com
www.bystronic-glass.com

Bystronic glass sales contact:
E-Mail: sales@bystronic-glass.com

For the contact details of Bystronic glass global representatives please visit www.bystronic-glass.com

 

 

600450 Speed’sealer sealing robot: new dynamic mixer system glassonweb.com

Others also read

The latest Glastory blog is dealing with the newest trends coming to the bus glass market - how the cut-outs, digital and screen printing, larger surfaces and thinner glass to reduce weight and fuel consumption is challenging the glass processing.
The latest Glastory post is dealing with the trends in automotive display glass processing.
In this blog post, we look at trends in the sunroof and windshield business today and how glass processors can prepare for them.
A clean, safe and sustainable source of energy, solar continues to power the world at a faster pace than ever before.
Originally developed for glazing in hurricane zones, SentryGlas® ionoplast interlayers are significantly stiffer than standard PVBs such as Butacite®.
Post breakage strength of glass is still an unknown area as analytical models for this are inconclusive so far and thus destructive testing is the only reliable solution.
Latest Glastory blog by Jukka Immonen is dealing with the 5 promises of convection technology in windshield bending.
In today’s architecture the bending of glass plays an important role in achieving free forms in modern façades.
Few materials in human history have been made for as long or used in as many ways as glass. Ancient peoples molded it and poured it; later cultures discovered how to spin and blow glass into unique, dazzling shapes.
Sustainability and the circular economy are increasingly influencing work and production processes in glass manufacturing, too.
Some practical tips on how you can well maintain your laminating line and extend its longevity.
Glaston is working hard to make tempering furnaces more automated.

FROM INDUSTRY

Ctra. Estación Km. 15.8
44415 Rubielos de Mora Teruel
Spain

Am Pfahlgraben 4
35415 Pohlheim
Germany

ARTICLES RELATED PRODUCTS

Thompson I.G.
LISEC Austria GmbH
Dip-Tech Ltd.
STRON Glass Machinery Co.,LTD.
R.C.N. Solutions Srl
Glaston Corporation
STRON Glass Machinery Co.,LTD.
Michael Mercury, LTD
R.C.N. Solutions Srl
LISEC Austria GmbH
Dip-Tech Ltd.
STRON Glass Machinery Co.,LTD.
Glasmik d.o.o. - Branch Office MARIBOR

Add new comment