Process introduction
The assembly process of automobile power battery and cell section is divided into:
1.Hot pressing 2.Tab welding 3.Adapter welding 4.Coating 5.Into the shell 6.Top cover welding
Among them, top cover welding is the last process, which is one of the most important processes to weld the top cover and shell together through the laser welding process.
problem
01. The accuracy of traditional PLC trajectory control is limited, and the welding quality is difficult to meet the requirements
02. When the welding speed changes, it is difficult to follow the laser trigger
03. It is difficult for traditional PLC to achieve multi-axis synchronous control
solution
1. Flexible use of trajectory control technology
Through Omron's programmable multi-axis motion controller CK series, a large number of G-code execution work can be completed by itself, complex trajectory control can be completed, and laser welding can be completed in combination with customer process needs by optimizing the trajectory through forward-looking functions.
2. High-speed position comparison output control
By collecting real-time encoder feedback for position comparison, phase synchronization with the laser synchronous output signal, and triggering the emission of laser at constant spatial (rather than time) intervals in all stages of the motion trajectory, the uneven laser punching in the acceleration, deceleration and corner segments is solved.
3. Multi-axis synchronous control
With Omron's programmable multi-axis motion controller CK series, a high level of trajectory calculation of robots can be realized. Using the best speed control and vibration suppression control algorithms, the position of the robot hand can be controlled with extremely high precision.
Control system
● Programmable multi-axis motion controller CK series
● AC servo system 1S series
Deliver value
● Stable welding speed: 300mm/s
● Efficiency: 18ppm
【Management】
■ "Improving quality, reducing costs, and increasing efficiency" has become the melody of the battery manufacturing industry, and through the iterative upgrading of motion control technology, more efficient and higher-quality production is realized, and the manufacturing cost of a single battery is reduced, and the industry is the first to grasp the opportunity.
【Management】
■ Omron's programmable multi-axis motion controller, compatible with third-party products, allows customers to have more choices, such as choosing more economical motors and drives, which can improve the price advantage of equipment.
■ The positioning of the moving mechanism and the improvement of the speed and accuracy of the inspection are completely based on the optimization of the control system and program, without changing the mechanical structure and movement time, and the introduction time is faster and the cost is lower.
【Engineer Layer】
■ The speed and accuracy of the equipment have been significantly improved, the welding speed has been increased from the original 150mm/s to 300mm/s, and the efficiency of the whole machine is as high as 12ppm.
■ Omron's programmable multi-axis motion controller CK series can complete complex trajectory control and high-level trajectory calculation of robots by itself, which is simple to debug and faster to import.
Article source: Omron Industrial Automation Information Account
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