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LASER PLASTIC WELDING
MAXI withrobot
Innovative and flexible
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Laser Plastic Welding
Established in 1998, the Leister business unit has many years of experience in laser welding of plastics. Leister is the owner of a number of patents (such as Mask or GLOBO welding) and the only company with expertise in all standard laser plastic welding techniques.
The principle of laser welding
In laser welding of thermoplastics, sometimes referred to as “laser transmission welding” or “through transmission IR welding” (TTIr), transparent and absorbent parts are bonded together.
The laser beam penetrates the transparent plastic and is converted to heat in the absorbing plastic. Since both parts are pressed together during the welding process, heat is conducted from the absorbent to the transparent plastic, allowing both materials to melt and create a bond. In addition to the externally applied clamping force an internal joining pressure is also generated through the thermal expansion of the laser-heated plastic parts. The internal and external joining pressures ensure strong welding of both parts.
Almost all thermoplastic plastics and thermoplastic elastomers can be welded with the laser beam – including ABS, PA, PC, PP, PMMA, PS, PBT as well as glass fiber reinforced plastic types. The achieved weld seam strength remains within the area of basic material strength.
GLOBO welding
A laser beam is focused at a point on the joining plane via an air bearing, frictionless, freely rotating glass sphere. The glass sphere not only focuses – it also serves as a mechanical clamping tool. While the sphere rolls on the component, it applies continuous pressure at a point on the joining plane. The glass sphere replaces the mechanical clamping device and expands the scope of laser welding to both continuous and three-dimensional applications.
Characteristics and application:• Arbitrary joining geometries in two and three dimensions• Welding without a clamping device• Suitable for robotic applications
Head-up Display Fabrics Liquid vapor separator
Examples
Laser radiation
Transparent joining part
Absorbent joining part
Melt zone
Weld seam
Joining pressure
Joining pressure
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MAXI with robot
The MAXI is a configurable manual turnkey system equipped with all necessary components for laser plastic welding.The Human Machine Interface (HMI) software visualizes the full process and assists while parameterizing the welding process.The HMI shows the welding contour as well as the local limits of the robot within the operation cell. The contour is displayed by a sequence of points where each point can be edited with an addi-tional function like change of speed or laser power.In addition, the HMI transmits process data like laser power, speed and clamping pressure to the system where this data is saved in relation to a specific project.
Not only can the system be configured with the robot but also with other motion systems. Furthermore, the system can be equipped with a conveyor belt or with no feeding system at all. • Laser welding system based on a 6-axis-robot• Several applications eligible for production• Process-independent HMI Software• Laser safety class 1
Technical Data
laser type diode laser or fiber laser
beam shape Spot, line, ring, fieldDOE, radial
laser power < 600 W
pilot laser/aiming beam LEDworking area robot
bis ca. 1450 x 800 mm
welding speed < 200 mm/s
max. working load 14 kg
compressed air 6 bar
controllerintegrated PLC, HMI, robot
data interface Leister HMI, robotdimensions (L x W x H)operation cell
1760 x 1500 x 2200 mm
weight < 2000 kg
line voltage 400 V ~
max. current consumption 16 A
frequency 50 / 60 Hz
environmental conditions 15 – 35°C
MAXI with robot - developed for laser welding of large and three-dimensional components. The easy to use Leister HMI control system not only is the platform for laser specific adjustments but also visualizes and adjusts the robot’s movement within the cell. The system is ideal for GLOBO applications and, for the first time, offers a complete solution from a single source.
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www.leister.com/laserplasticwelding
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© Copyright by Leister, Switzerland
Leister headquarter Switzerland Leister subsidiary company Leister Resellers and Partners
Distribution addresses of the Leister Sales and Service Centers
Swiss Made. Leister Technologies AG is an ISO 9001 certified enterprise. subject to change without prior notice.
Your Leister Sales and Service Center:
EuropeNetherlandsAeson AV Huizen /NL
contact: Rudolf Dasbach
Belgium / LuxembourgHupico bvba contact: Pierre Huyghebaert [email protected]
UK / Ireland Horizon Instruments Ltd.
contact: Daniel Bolton
Denmark / SwedenWeldingseller aps
contact: Kasper Knudsen
RussiaOlmax
contact: Maxim Shchekin
Middle EastIsraelSu-Pad (1987) ltd
contact: Ziv Sadeh
AsiaMalaysiaSnR Gold Wave Resources Sdn Bhd
contact: Abdul Wahab
TaiwanGreatDing Technology Co., Ltd.
contact: David Hsu
Headquarters Switzerland Leister Technologies AG Galileo-Strasse 10 CH-6056 Kaegiswil / Switzerland phone: +41 41 662 74 74 [email protected]
GermanyLeister Technologies Deutschland GmbH 58093 Hagen / Germany phone: +49-(0)2331-95940 contact: Matthias Poggel [email protected]
USA, Canada, MexicoLeister Technologies LLC Itasca, IL 60143 / USA phone: +1 630 760 1000 contact: Andrew Geiger [email protected]
ChinaLeister Technologies Ltd. Shanghai 201 109 / PRCphone: +86 755 27440399 contact: Cai Sheng [email protected]
JapanLeister Technologies KK Yokohama 222-0033 / Japan phone: +81 (45) 477 3637contact: Nobuaki Suzuki [email protected]
IndiaLeister Technologies India Pvt. Ltd. phone: +91 44 45583436 - 8contact: Arun Kumar [email protected]
