Hesse Mechatronics

Laser Welder LW2095

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Laser Welder LW2095 – Fully automatic Laser Welding System
with two weldheads and an extra large working area

The Laser Welder LW2095 is a laser welding system for fully and semi-automatic deep penetration welding of aluminum and copper leads on DCB substrates, in power electronics, battery cells and modules, or other electronics manufacturing components.
Laser welding uses a laser beam to create intermetallic joints along a weld seam.

Both temporal and spatial laser power modulation enable different weld geometries and depths with the Laser Welder LW2095. A movable holding-down device avoids contamination of the surrounding area by weld pool ejections („splashes“) during the welding process

Constant precision throughout the manufacturing process is ensured by high axis accuracy and a professional process control, which ensures reproducibility of clamping force („zero-gap-challenge“) and welding conditions.
This standardized „clamp and weld“ concept offers fast adjustment to different product variants and flexible product change-over. It also makes it possible to react automatically to component tolerances of the joining partners to be welded.

Features and process advantagesTechnical DataBrochure
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Laser Welder LW2095

  • Extra large working area: 2400 mm × 1400 mm × 45* mm (X×Y×Z)
  • Fast welding times
  • Different weld geometries and depths due to temporal and spatial laser power modulation
  • Active vertical axis with sensor technology
  • Sensor for touchdown detection in combination with an adjustable hold-down force avoids damage to sensitive contact partners
  • Two weldheads with 1.5 kW laser beam source
  • Image recognition (PR) for precise detection and correction of the weld location
  • Minimal mechanical and thermal load
  • Process monitoring via sensors for process illumination (plasma, thermal illumination and backscattered radiation)
  • Standardized interfaces for line integration (e.g. OPC-UA, profinet)

Application examples:

Laser welded application example

  • Welding of Cu leads on DCB/AMB
  • Welding of Cu leads on Cu Busbar
  • Welding of battery cells
  • Welding of Al leads on Al

Laser weldhead

Laser Weldhead

  • Down hold force up to 120 N
  • Regulation of the down hold force
  • Touchdown detection
  • Max. immersion depth: 94 mm
  • Monitoring optics with ring light and image recognition
  • Exchangeable down hold device
  • Process gas supply / ventilation at the welding spot

Beam source

  • Max. power: 1.5 kW, cw
  • Laser beam quality: Single Mode
  • Wavelength: 1070 nm
  • Optionally, the laser beam source can be equipped with an air-water cooler
    for autarkic operation without a cooling water network

Optic

  • Hesse optics module
  • Focus spot diameter < 50 μm in combination with the above-mentioned laser
  • Max. working area of the optics: 12 mm x 12 mm. Current achievable field of work results from the contour of the holding-down device
  • Max. power: 1.3 kW, cw
  • Permissible wavelength: 1070 nm
  • Focus position dynamically adjustable
  • Shape of the welded seam is configurable (line, wobble, spiral, circle, meanders;
    customer-specific weld geometries can also be implemented
  • Temporal power modulation
  • Process observation via backscattered radiation and / or process lights
  • Dynamics of optics:
    • Line welding with up to 1000 mm/s
    • Wobble seam: Wobble frequency up to 1000 Hz

Housing*

Housing of Laser Welder LW2095

  • The machine needs to be equipped with a protective housing and safety devices . The protective housing must be designed for the foreseeable maximum radiation and must also offer the required strength.
    *(not in our equipment portfolio, please contact us for further information)

Service Stations

  • Tool force calibration module
  • E-Box station for laser beam alignment
  • Tool changing station (as option)
  • Integrated beam shape measurement and focus position
    determination
  • Off-bond-station for welding samples

Service Stationen

Working area

Laser Welder X Y Z
LW2095 2400 mm 1400 mm  45** mm
P-rotation: 360°

(**depending on product configuration)

Footprint

W x D x H [mm]
LW2095

excl. attached parts like e.g. control panel, status lamp

 4434 x 3000 x mind. 2460
External switch cabinet

excl. attached parts like main switch, door handles

 1800 x 600 x 2200
Laser  switch cabinet

excl. attached parts like main switch, door handles

 600 x 600 x 2000

Download Brochure

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Download Request Laser Welder LW2095

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