In-mold laser welding is a cutting-edge technique that integrates laser welding modules directly into stamping molds. This approach streamlines the production process by eliminating traditional multi-step procedures, enabling efficient in-mold processing of stamped parts. The result? Reduced secondary operation costs, shortened production cycles, and enhanced manufacturing flexibility. When compared to external welding methods, in-mold welding demands higher technical and process precision to ensure the stability and quality of precision components.
In-Mold Welding System
Han’s Laser in-mold laser welding machine is the preferred solution for welding small stamped components. By synchronizing the laser welding process with the stamping operations, this system eliminates redundant loading and unloading steps, further boosting production speed. It also reduces the need for additional equipment, workstations, and labor. The system can incorporate multiple welding heads, completing the welding process within milliseconds, ensuring consistent product quality and substantially enhancing capacity and efficiency.
 Three-Point Welding |  Three-Point Welding |
 Four-Point Welding |  Six-Point Welding |
Key Features
The laser welding system includes an in-mold welding head, a laser unit, and a control system. It supports multi-station simultaneous processing or the simultaneous welding of multiple cavities, catering to the high-speed welding demands of 3C industries for various precision small parts. Key features include:
High Efficiency and Precision: The system offers high welding efficiency and precise positioning, enabling fully automated welding of stamped products.
Multiple Welding Heads: It allows simultaneous multi-point welding to maintain quality consistency and boost productivity.
Customizable Solutions: Users can select from various welding head designs and focal points, meeting different product requirements.
How Does the In-Mold Welding Head Work?
The in-mold welding head employs diffraction optics to split the laser beam. This involves using micro-nano etched diffraction elements that finely regulate the laser wavefront phase distribution. As the laser beam passes through each diffraction unit, it diffracts and forms interference patterns at a specific distance, creating a unique light intensity distribution.
The welding head’s optical elements divide a single laser beam into several beams, each retaining the properties of the original beam (except for power and propagation angle).
Technical Highlights of Standard Laser Options
The in-mold laser welding equipment comes with multiple integrated laser modules equipped with the latest synchronized output control system. Each laser can be independently configured with specific parameters for synchronized output. Various fiber diameters are available to meet different weld point size requirements. When compared to external welding, the efficiency of in-mold welding can be several times to dozens of times higher!
Structural Composition of In-Mold Welding Head
System Advantages
1.Multi-Point Welding Heads
Available with configurations of three, four, six, eight, or ten focal points. The number of weld points, their arrangement, and spacing can be customized based on customer requirements.
Standard Laser
2.Customizable Head Designs
The welding head’s structural dimensions can be customized to fit different stamping molds.
3.Compact and Sealed Design
The in-mold welding head is compact and well-sealed, capable of withstanding high-speed stamping vibrations.
4.Non-Contact Welding
High automation, safe, and reliable, reducing labor and costs.
5.Stable and High-Yield
High system stability ensures consistent product accuracy and minimal power consumption.
Applications in the 3C Industry
This advanced welding system is primarily used for in-mold laser welding of connectors, mobile phone springs, heat sinks, camera modules, fingerprint modules, and other small 3C components. By offering multiple laser options such as the PB25CE, PB300CE, WF600, and PG3/5 green laser, it caters to a wide range of welding requirements.
Multiple laser options can be selected:
 PB25CE Lamp-Pumped Laser |  PB300CE Lamp-Pumped Laser |
 WF600 Lamp-Pumped Laser |  PG3/5 Green Laser |
Conclusion
Han’s Laser in-mold laser welding system is an innovative solution that offers unparalleled advantages in efficiency, stability, and precision. With its integration into stamping processes, manufacturers can achieve automated, high-quality welding at a significantly lower cost. The technology supports the upgrading of the 3C precision component manufacturing industry by providing smart, reliable, and cost-effective solutions.