In what directions are SMT equipment being innovatively upgraded?
As electronic products become more and more miniaturized, IC, CPU and other integration levels are getting higher and higher, the manufacturing industry is in urgent need of transformation and upgrading, the design of electronic products is changing with each passing day, and intelligence and automation have also become the development trend of enterprises. Surface Mount Technology (SMT), as a new generation of electronic assembly technology, has developed rapidly in the past ten years and has a wide range of applications. It has penetrated into various industries and fields, and has partially or completely replaced traditional technology in many fields. circuit board through-hole insertion technology. The process flow can be roughly divided into: printing, patch, welding and testing (each process can be added to the testing link to control the quality). With its own characteristics and advantages, SMT technology has brought about fundamental and revolutionary changes in electronic assembly technology. According to the latest forecast of the Ministry of Industry and Information Technology of the People's Republic of China, there will be more than a few hundred sets of SMT equipment every year in the next few years, and SMT technology still has a strong development momentum.
High-precision printing, the first level of SMT production
SMT printing is the first process of the surface mount production line, and the quality of it has an extremely significant impact on the pass rate of SMT products. An important factor affecting the quality of solder paste printing is the motion control accuracy of each part of the printing machine. At present, the production of SMT products is developing towards high output rate and "zero defect". In production, the printing machine needs to be stable and uninterrupted for a long time. High-speed operation puts forward high requirements on the running speed, stability and reliability of its motion control system. The innovative technologies of the vast printing and assembly factories are constantly challenging the limits of quality and production efficiency.
DEK NeoHorizon 03iX from Advanced Assembly Systems Ltd.
The world's leading SMT equipment supplier ASM Advanced Assembly Systems Co., Ltd. (2017 Munich Shanghai electronic production equipment exhibition, booth number: E3 hall 3106) is a good example, its DEK NeoHorizon iX printing platform with its advanced features, can be used for any Offering a powerful and highly accurate solution, the DEK NeoHorizon Back-to-Back takes DEK's two-track printing concept even further, a simple and ingenious solution that allows it to be converted into two single-track machines at any time, protecting the investment At the same time, adapt to changes at any time.
At the same time, the modular structure of the DEK NeoHorizon iX provides full flexibility, enhancing process inspection with the groundbreaking DEK HawkEye technology. In addition, the DEK ProFlow ATx enclosed print head and DEK automatic solder paste replenishment device can greatly reduce manual operation, improve efficiency and cost. The new and efficient DEK Cyclone Duo stencil bottom cleaning system minimizes cleaning time and consumables usage.
Focus on SMT production line, SMT placement machine high performance, high efficiency and high integration
The placement machine is a device used to achieve high-speed, high-precision, fully automatic placement of components. It is related to the efficiency and accuracy of the SMT production line. It is the most critical equipment in the SMT production line with the highest technical and stability requirements. More than half of the production line investment, its development trend can be summarized by "three highs and four modernizations", that is, high performance, high efficiency, high integration, flexibility, intelligence, green, and diversification.
Specifically, the SMT placement machine has undergone 3 generations of development, and has developed from low speed (1-1.5 seconds/piece) and low precision (mechanical alignment) in the early stage to high speed (0.08 seconds/piece) and high precision (optical alignment) Centering, automatic placement machine with placement accuracy ±60um/4q). The first-generation placement machine does not have visual recognition devices, precise servo systems, automatic board feeding and automatic nozzle changing functions, and only has a low-precision stepping multi-axis system; the second-generation placement machine has visual recognition function, placement The number of heads has also been expanded from 2 to more, and the XY axis system of automatic transmission and imported servo technology can also be imported; the third-generation placement machine has a higher level of improvement, such as device identification and placement optimization functions, and the Z-axis height adopts Precise servo technology, to meet the thickness detection and supply of different devices and ICs, high-precision placement, the third-generation placement machine is actually a precise industrial robot, composed of computer, optics, precision machinery, ball screw , linear guides, linear motors, harmonic drives, and high-tech equipment for mechatronics composed of vacuum systems and various sensors.
