INTRODUCTION
SMT SPI machine is a device used to check the quality of solder paste printing on PCB boards after printing by solder paste printers. It has a powerful inspection capability as an important tool in the field of electronic assembly.
I. Why is solder paste important?
1. Role
Solder paste is a blend of alloy powder, paste solder and a variety of additives in a special paste, it is both viscous and thixotropic, is an indispensable soldering material in the SMT line process.
At room temperature, the viscosity of solder paste enables electronic components to be easily pasted on the PCB pads. As the temperature rises, the alloy powder in the solder paste gradually melts and flows, and the liquid solder wets the soldered ends of the components and the PCB pads. In the reflow oven or wave soldering machine soldering temperature, solvents and some additives evaporate, after cooling, the components of the solder end and the pad will be closely linked through the solder, the formation of a solid electrical and mechanical connection.
2. The impact of solder paste quality on the overall product
The quality of solder paste directly affects the quality of soldering and component damage.
High-quality solder paste can avoid "solder joints" or "cracked solder joints" and other problems when soldering, and at the same time can protect the components from damage. Therefore, we should choose to meet the standard requirements of the solder paste, avoid the use of poor quality products.
II. SPI technology introduction
1. The working principle of SPI machine
SPI equipment utilizes a high-precision laser to project onto the surface of the solder paste printed on the PCB board, and captures the laser profile through a high-resolution digital camera, so as to detect whether the printed solder paste is qualified in terms of height, volume, area, short-circuits and offsets.
2. SPI device types and functions
Common SPI equipment is divided into two main categories: offline solder paste inspection machines and online solder paste inspection machines.
3D solder paste inspection machine can obtain 3D data of each point by moving the automatic X-Y platform and scanning the solder paste solder joints with laser. It can also be used to measure the average thickness of solder paste applied during the entire pad placement process, so that the solder paste printing process can be well controlled. 3D SPI adopts the programmed design method, the same product is programmed successfully at one time, and it can be scanned in unlimited quantities and at a faster speed.
2D solder paste inspection equipment is based on the height of a line on the solder paste to measure the thickness of the entire pad of the solder paste. 2D SPI mostly use manual knobs to adjust the PCB platform to the right need to measure the point of the solder paste, the speed is slower, but the price is cheaper compared to 3D.
III. Necessity of SPI
1. Check the quality of the SMT machine patch
SPI can carefully check and verify the quality of solder paste to ensure that the solder paste are uniform, appropriate amount and accuracy.
2. Soldering defects
SPI system for solder paste thickness, position and shape and other parameters for detailed inspection. It provides insight into and prevents soldering defects, such as under, over, or off-set solder paste, ensuring that every soldering job is close to perfect.
3. Improved efficiency
SPI equipment reduces the number of failures caused by defective solder paste in the subsequent process, thus dramatically increasing production efficiency.
4. Automated Inspection
The SPI system, with its automation and high performance, can complete the inspection of solder paste adhesion on the whole board in a very short time. Compared to manual inspection, it achieves unprecedented speed and accuracy.
5. Data Recording and Processing
The SPI system records and generates reports on the detected data, which guides the direction of quality control, process improvement and product traceability. By analyzing these data, manufacturers can accurately adjust the production process and achieve continuous improvement of product quality.
IV. SPI application industry
- Consumer electronics
- Automotive electronics
- Medical equipment
- Industrial control
V. Conclusion
In today's highly competitive electronics manufacturing industry, ensuring product quality is not only the expectation of customers, but also the key to business success. By using SPI equipment to identify potential problems in a timely manner, companies can not only reduce production costs, but also enhance customer satisfaction and brand reputation.
Emphasizing the implementation of SPI technology means that manufacturers are taking an important step on the road to excellence. We encourage all companies in the industry to incorporate SPI into their production processes, incorporate the latest inspection equipment and technology, and continually optimize inspection standards to ensure that their products are competitive in the marketplace.
If you would like to learn more about fully automated SMT lines, please feel free to contact us and we will be happy to provide you with support and advice.
Quick facts about NeoDen
1. Established in 2010, 200+ employees, 8000+ Sq.m. factory.
2. NeoDen products: Smart series PNP machine, NeoDen N10P, NeoDen9, NeoDen K1830, NeoDen4, NeoDen3V, NeoDen7, NeoDen6, TM220A, TM240A, TM245P, reflow oven IN6, IN12, IN12C, Solder paste printer FP2636, PM3040.
3. Successful 10000+ customers across the globe.
4. 30+ Global Agents covered in Asia, Europe, America, Oceania and Africa.
5. R&D Center: 3 R&D departments with 25+ professional R&D engineers.
6. Listed with CE and got 50+ patents.
7. 30+ quality control and technical support engineers, 15+ senior international sales, timely customer responding within 8 hours, professional solutions providing within 24 hours.