Automatic laser single-sided welding_HauqHi(Shanghai) Connect New Technology Develop

Automatic Laser Welding System Configuration Diagram

Laser Welding Control System

Welding Control System Product Features:

Siemens PLC control.

Alarm functions: laser fault alarm, water chiller fault alarm, low protective gas pressure alarm, peripheral safety condition not met alarm, etc., capable of sequentially storing at least 1000 historical alarms.

The controller can provide and store no less than 200 sets of welding parameters, with each weld spot individually set to call one set of parameters.

The system safety level can reach PLe, Cat.4, and SIL3.

Safety loop design uses an emergency stop, safety door, and other safety signal dual-loop safety relay scheme, in compliance with EN 60947-5-1 and EN 60204-1 standards.

Automatic Laser Single-Side Welding - Product Advantages

Advanced Technology: Laser non-contact process solves the problems of thermal deformation and weld indentation in traditional spot welding, suitable for welding materials such as carbon steel, galvanized sheet, and aluminum.

High Efficiency: Fast welding speed, about 0.4s per weld for carbon steel/galvanized sheet, about 0.2s per weld for aluminum, with electro-optical conversion efficiency over 25%.

Premium Configuration: Core components are selected from well-known brands, integrated design, equipped with dual-temperature precision water chiller, supporting multiple communication methods.

Precise Control: Siemens PLC control, can store 200 sets of welding parameters, individual welds can be set separately, safety level up to PLe, Cat.4, SIL3.

Comprehensive Protection: Anti-misfire and anti-diffuse reflection design, protection level up to OD6, compliant with relevant safety standards.

Professional Service: With more than 10 years of industry experience, providing one-stop solutions, technical support, and full-process after-sales service, with high-quality customer resources.

Laser single-sided welding process

In the process of automobile manufacturing, automotive open-close parts involve treating the edges of doors, hoods, trunk lids, and other open-close parts to achieve the combination of inner and outer panels, forming an open-close assembly. After edge wrapping is completed, single-side spot welding and two-component high-frequency curing processes are commonly used to prevent movement at the wrapped edges. Due to the issues of heat deformation caused by traditional resistance spot welding and the high cost of the two-component high-frequency curing process, adopting a laser non-contact process to solve the two major appearance quality problems—weld heat deformation and weld indentation—has become urgent.

镀锌件焊接

铝件焊接

热影响区测试与铝件破拆

铝件过涂装效果

Key Process Capabilities of Automatic Laser Welding System

Welding materials: carbon steel, galvanized sheet, aluminum, etc.

Part gap: <0.2mm.

Welding method: carbon steel, galvanized sheet: lap/joint (requires visual); aluminum: lap joints only;

Weld length: carbon steel, galvanized sheet: 5-10mm; aluminum: 5mm

Welding speed (welding time only): carbon steel, galvanized sheet: ~0.4s/weld; aluminum: ~0.2s/weld

Laser Welding Workstation Diagram

The key safety protection configurations of the laser welding system are as follows:

Preventing accidental triggering:

- The safe working area can be set via PLC to prevent light emission outside the designated area;

- Automatic light-off function (pulse mode);

- The back of the welding parts needs protection to prevent laser overflow.

Preventing diffuse reflection:

- Laser protective screens can be configured, suitable for Class 3 and Class 4 laser applications, including building laser protective enclosures and laser protective screens.

- According to GB 7247.4 (EN60825-4) standard testing, the laser protective cover reaches a protection level of OD6 for laser (1080nm wavelength).

Note: OD stands for optical density, which indicates the light density absorbed by the tested object. For example, OD6 means that the laser energy passing through the protective window is attenuated by 10^6 times, so an energy of 1000 W would be reduced to 1 mW.

激光焊接工作站示意图1

激光焊接工作站示意图2

激光焊接示意图

Laser Welding Customer Application Showcase

Door Cover Clamping Edge Laser Welding 1.mp4

Four-door brazing

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