What are the applications of laser welding technology in the motor market?

From the perspective of the scale division of the world market, China is the manufacturing area of ​​motors, and developed countries in Europe and the United States are the technology research and development areas of motors. Taking micro motors as an example, China is the world's largest producer of micro motors, and Japan, Germany, the United States and other countries are the leading forces in the research and development of micro motors, controlling most of the world's high-end, precision, and new micro motor technologies. From the perspective of market share, according to the scale of China's motor industry and the total scale of global motors, China's motor industry accounts for 30%, while the United States and the European Union account for 27% and 20% respectively.

So why are Chinese motors suddenly popular? Because Chinese motors occupy a very important position in the field, and because my country's market space will have long-term growth potential, it will not only accelerate the elimination of backward and inefficient motors, but also increase the application of high-efficiency and energy-saving motors. Secondly, all energy-related links need to be upgraded to reduce carbon emissions, which contains huge opportunities. After a long period of silence, my country's motors finally ushered in good news.

What is Laser Welding

At first glance, the robot laser welding machine is a kind of machine equipment. Our Shenzhen company has a large number of production and is widely used in the industrial field. The introduction of this product combines a more flexible hand, so that it can achieve 360° no-dead-angle operation like a robot. Let's take a look at the laser welding machine. It is an industrial equipment that can be used for automatic spot welding, butt welding, lap welding, and sealing welding of various metal materials and non-metallic materials. It can complete the welding of complex plane straight lines, arcs and arbitrary trajectories. This is a simple introduction to the machine. To deepen the laser welding, it is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. The surface of the workpiece is heated by laser radiation, and the heat on the surface will diffuse to the inside through heat conduction, so that the workpiece is melted by controlling the energy, width, peak power and repetition frequency of the laser pulse in many aspects, forming a specific molten pool, so that the surface of the material is melted and solidified into a whole. The size of the heat-affected zone, the beauty of the weld, the welding efficiency, etc. are important indicators for judging the quality of the welding process.

Shenzhen Zichen Laser Equipment Co., Ltd. inherits the most advanced technology and brand pedigree from the local area, specializing in the research and development, production and sales of laser soldering equipment. After years of technological innovation and process breakthroughs, it provides the market with a variety of high-quality laser welding equipment and solutions. Zichen Laser's laser welding machine has fast welding speed, high processing efficiency, narrow weld heat affected zone, and good weld quality. It is favored by many companies in the field of industrial laser welding. If you need it, please feel free to contact us - Shenzhen Zichen Laser Equipment Co., Ltd.

Application of laser welding in motor field

Although there are many types of motor products, their structures are roughly the same, generally including the following parts: stator assembly, rotor assembly, and other parts. The applications of laser welding in the motor field include vcm motors, fan motor blades, motor cores, motor stators, coil modules, motor coil connectors, enameled wires and plates, etc.

Motor stator laser welding

In the past, the welding of motor stators was done using oxyacetylene welding. This welding method not only has flammable and explosive fuel, posing a great potential safety hazard, but also requires the frequent purchase of liquefied gas cylinders, the flame size needs to be repeatedly adjusted, and it will pollute the environment and produce gases such as CO, CO2, and NOX during combustion.

In comparison, laser welding, which has the advantages of concentrated energy, high density, high heating efficiency and fast speed, can be applied to motor stator welding, which can effectively improve productivity. At the same time, it can also improve the sanitation and safety conditions of the production environment and eliminate the harm to human health caused by strong arc light, ozone and other undesirable oxides during argon arc welding. In addition, it is also possible to use a computer to control dual or four machines or a single machine with multiple laser beams to output, which are placed around the outer wall of the stator. In this way, the number of welds required for stator tightening can be completed by running the welding machine once or twice, which greatly reduces the deformation and saves processing time.

Laser soldering of motor control boards

The motor is the actuator and the most critical component of the automation equipment. To describe it more abstractly and figuratively, it is like a human hand, which performs intuitive operations. To guide the "hand" to work well, various motor drive control boards are needed. The control board is also a circuit board. Although its application range is not as wide as that of the circuit board, it is more automated than the ordinary circuit board.

According to the position and size of the solder joints on the motor circuit board and the presence or absence of obstructions, there are generally three laser soldering methods available: tin wire, tin paste and tin ball. Laser soldering technology uses the excellent directionality and high power density of the laser beam to focus the laser beam in a very small area through the system, and uses the laser beam to directly irradiate the welding part. The welding part (component leads and solder) absorbs light energy and converts it into heat energy. The temperature rises sharply to the welding temperature, causing the solder to melt. After the laser heating stops, the welding part cools rapidly and the solder solidifies, thus forming a reliable welding joint.

The global motor industry will transform towards intelligence and energy saving in the future

The electric motor industry has not yet achieved full automation of the production and manufacturing process worldwide. In the winding and assembly processes, a combination of manual labor and machines is still required, which is a semi-labor-intensive industry. At the same time, although the ordinary low-voltage motor technology is relatively mature, there are still many technical barriers in the fields of high-power motors, special environment application motors, and ultra-high efficiency motors. From the development trend of the global electric motor market, it is mainly manifested in the following points:

1. The industry is developing towards intelligence and integration

Traditional motor manufacturing has achieved cross-integration with advanced technology and intelligent control technology. In the future, for small and medium-sized motor systems applicable to the industrial field, the continuous development and optimization of intelligent control technology to achieve the integration of motor system control, sensing, drive and other functions is the future development of the motor industry.

2. Products develop towards differentiation and specialization

Electric motors are widely used in energy, transportation, petroleum, chemical industry, metallurgy, mining, construction and other fields. With the continuous deepening of the global economy and the continuous improvement of customer level, the situation in which the same type of electric motors were used for different properties and occasions in the past has been officially broken. Electric motor products are developing towards professionalism and differentiation.

3. Products are developed towards universities and energy saving

In recent years, relevant environmental protection policies around the world have pointed out clear policy directions for improving the efficiency of motors and general machines. Therefore, the motor industry urgently needs to accelerate the energy-saving transformation of existing production equipment, promote efficient and green production processes, develop a new generation of energy-saving motors, motor systems and control products, testing equipment, etc., improve the technical standard system of motors and systems, and strive to enhance the core competitiveness of motor and system products.

Zichen laser welding equipment:

Metal laser welding machine

Equipment Features

√ Equipment safety measures are in place; it adopts a closed housing, safety grating, and is equipped with an instant stop switch, etc.

√ Double-station design saves time for loading and unloading and improves production capacity.

√ Jig clamping, convenient and compatible with a variety of products.

√ High-precision XYZ motion platform, high welding accuracy.

√ Fiber laser, long life, high stability, energy saving.

√ Chinese software interface, easy to learn and use.

Air conditioner motor stator plate laser welding robot

Equipment advantages

1. Use non-contact soldering, no mechanical stress damage, and little thermal effect;

2. Multi-axis robot intelligence (optional customization) can cope with various complex and precise welding processes;

3. Coaxial CCD camera positioning and processing monitoring system can clean and present solder joints and correct alignment in time to ensure processing accuracy and automated production;

4. The four points of laser, CCD, temperature control and indicator light are coaxial, which perfectly solves the problem of multi-light path overlap in the industry and avoids complicated debugging;