Publish Time: 2023-06-21 Origin: Site
STR-HW series handheld laser welding machine can achieve true penetration and 7 × 24 hours of continuous work
A small body undergoes significant changes
As many as 12 patents have been obtained for the STR-HW series of Siemens Laser, including 4 patents for the STR-HW series handheld laser welding gun (hereinafter referred to as "STR-HW welding gun") developed by Siemens Laser, accounting for about 30% of the total number of patents.
As the most direct operation accessory of handheld Laser beam welding, the welding gun can amplify or weaken the effect of the welding host. A good welding gun will bring a new welding experience to the welder. Compared with the traditional welding gun, the STR-HW welding gun has made five major innovations and upgrades:
Three Body and Two Specialties
Integrated welding gun design
Integrated armored cable design
Ergonomic design
Unique output gas path
Unique welding gun material
Integrated welding gun design with "three body and two features" - double the effect brought by accessory integration
In the research and development process of STR-HW series handheld laser welding machines, the integrated design concept has always been emphasized by the company. The STR-HW welding gun also continues the same research and development philosophy, making bold breakthroughs and upgrades.
For traditional conventional laser welding guns, the additional weight, energy transmission loss and other hidden failure risks caused by inserting the QCS/QBH output head of the laser generator into the welding gun interface are unavoidable problems. The integrated integration of the STR-HW welding gun eliminates the QCS/QBH head from the design, and is fully enclosed without interfaces. The excitation light path directly enters the welding gun, not only improving laser transmission efficiency but also effectively reducing the probability of failure.
Perhaps everyone may question that eliminating the integrated welding gun for QCS/QBH laser output heads would result in the loss of one accessory? Why does the effect not diminish, but instead improve? What technological means were used to achieve this?
Traditional welding gun light path
Looking at the schematic diagram of the optical path of a traditional welding gun, it can be found that laser energy is transmitted through the internal optical path of the welding gun. After being input through the QCS/QBH head, it also needs to pass through a collimating lens to convert the scattered light into collimated light. Considering the passing rate of the laser lens, coupled with some scattered laser, it will inevitably cause additional loss of laser energy; And after collimating the lens, there will be scattered laser hitting the shell. If it is made of traditional metal materials, it will inevitably result in a long operation time and the gun body will heat up.
Sichuang Laser STR-HW Welding Gun Optical Path
The STR-HW welding gun directly adopts a breakthrough optical path design and has achieved considerable feedback on welding performance.
We have boldly reformed the traditional laser transmission method by directly using the beam collimation module input, minimizing the refraction, scattering, and other losses of laser energy transmission between lenses, truly realizing the concept of an integrated welding gun. This welding gun design assists the host in bringing better laser energy output performance, allowing the welding machine to achieve deeper welding penetration under the same power conditions, greatly improving welding efficiency.
The integrated armored cable design of "three bodies and two features" - breaking things into whole and simplifying complexity
In the eyes of many people, it is just a simple connecting wire, and no one can see it wrapped together.
But when the welding gun becomes an integral part, the armored cable naturally serves it and must also become an integral part in order to minimize transmission losses and form a closed loop. Under the careful consideration of the R&D business unit, a small wire is cleverly and reasonably integrated into a armored cable with a diameter of only 17mm (plus a protective cloth sleeve size of 18.6mm) by combining four different connected wire groups between various components in traditional welding guns. This greatly increases the flexibility of welding guns in welding operations.
The ergonomic design of "three body and two characteristics" - bringing a better welding operation experience
During the product development period, the team consulted and researched 156 different handheld tools both domestically and internationally. After determining the approximate shape, various cone-shaped design gun bodies were physically printed using the company's additive manufacturing equipment (3D printing). After extensive comparative experiments and customer experience feedback, the final version of the welding gun design was finalized. The overall shape conforms to ergonomic design, with a welding gun head with a 120 ° angle and a wire feed head with a 50 °~60 ° angle, providing a better grip experience and making welding operations easier.
The unique output gas path of the "three body and two characteristics" makes welding operations more convenient
In the conventional laser welding work, the spatter caused by laser welding will seriously affect the surface quality of the weld, make many metal particles appear on the surface of the material or workpiece, and also increase the probability of pollution and damage to the protective lens. The STR-HW welding gun has a special nozzle closure design, which can instantly accelerate the airflow and effectively suppress welding spatter.
The unique welding gun material of "Three Body and Two Specialties" - a gentle and high-temperature resistant coat
There is better welding effect and longer welding time, and the material of the welding gun must bear the load of all functions. The R&D team began to continuously try many different welding gun shell materials to match the maximum presentation of multiple core technologies.
Metal materials dissipate heat quickly, but when used in high temperature environments in summer, they can absorb the ambient temperature and become hot;
Although conventional plastic materials do not conduct heat, the shell is fragile and slippery, making it difficult to grip;
After multiple attempts and comparison with experimental data results, and from multiple dimensions of strength and performance, the STR-HW welding gun ultimately chose PC material as the main material for the gun body. The welding gun handle is paired with industrial soft glue to enhance grip comfort, allowing the welding gun to have advantages such as lightweight, long-lasting use without fatigue, and not getting hot. This assists in the final landing of core technology, making the STR-HW series products stand out from similar products on the market.
The intuitive feeling brought by these five innovative upgrades is that the volume and weight of the welding gun are greatly reduced compared to traditional welding guns, with a full gun size of only 230mm × 270mm, net weight<600g, more lightweight and convenient.
Dimensional diagram
In the initial customer evaluation feedback, could the STR-HW welding gun be slimmer? From the five major innovations above, everyone can definitely feel our repeated deliberation and meticulous refinement in the product. Therefore, in order to ensure the overall service life and low failure rate of the welding machine, and reduce faults and problems caused by human error, its internal space has also been accurately calculated and measured.
Due to the use of a beam collimation module input and its ability to withstand high power, high-quality laser beams, high-temperature environments, and long-term welding, sufficient redundancy is required inside the welding gun. After years of use, customers will soon realize that the STR-HW welding gun has a very high error tolerance rate, does not generate heat, has low faults, and is not easily affected by misoperation, burning of welding gun components, and long-term extreme work, Accidents such as burning down the overall optical path occur.
So in practical use, this welding gun greatly improves the welding effect and operational flexibility, and is not prone to fatigue after long-term use; From the perspective of welding performance, the STR-HW series products present true penetration of 6mm stainless steel and 5mm aluminum plates, and 7 × A series of outstanding performances, such as 24-hour uninterrupted work and continuous welding at -20~60 ℃, have provided a satisfactory answer sheet for the innovation, breakthroughs, and upgrades made by Silicon Laser so far.
Series product diagram
Technology driven upgrades create endless possibilities. The five innovative upgrades of the small welding gun have brought technological changes and defined iterations to the entire handheld laser welding gun.
Over the years, Sichuang Laser has carried out layout around handheld Laser beam welding, laser composite welding and other projects, never forgetting the original intention of research and development, adhering to the manufacturing concept of excellence from the overall equipment to details, and committed to achieving better application of laser technology in intelligent manufacturing.
In the laser manufacturing industry, many excellent optical patented technologies have not been implemented in engineering applications, fully leveraging their technological value. Sichuang Laser actively carries out engineering application attempts, and is willing to invest limited time in unlimited innovative manufacturing, ranging from the design and upgrading of the optical path and cooling module of the welding equipment host to the careful carving of parts such as welding guns and wire feeders. Adhering to a more authentic and responsible attitude towards products, it leads a new wave of technological change in handheld Laser beam welding.
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