PCBA Tech - SMT regularly maintains and controls quality checkpoints

SMT placement machine regular maintenance method

SMT placement machine is a circuit assembly technology that mounts leadless or short lead surface mount components on the surface of a printed circuit board or other substrates, and solders and assembles them by reflow soldering or dip soldering. smt processing The solder joint defect rate is low, the reliability is high, and the anti-vibration ability is strong. SMT patch processing is easy to realize automation, improve production efficiency, save materials, energy, equipment, manpower, time, etc., and reduce costs by 30% to 50%.

The price of SMT placement machines may be a bit expensive. In addition to improving productivity when using placement machines, it is necessary to better control production costs. Among them, extending the service life of the machine is the method to control production costs. one. So, how to extend the service life of SMT placement machine? Regular maintenance of the SMT placement machine guarantees to extend its service life. The steps for regular maintenance of the SMT placement machine are as follows:

1. Take out the patch head;

2. Wait until the origin, then remove the discarded component box and turn "HEAD SERVO" to OFF, and then remove the Nozzle;

3. Use the manual handle to turn the head between No. 7 and No. 8 positions;

4. Use a mirror to place it on the platform under the head. The reason for this is to facilitate finding screws;

5. Use an M5 trapezoidal Allen key to loosen the bottom screw, and then remove the head fixing block;

6. Use a wrench with one hand to push up the slider of the film head, and the other hand hold the head firmly so that it can be taken out slowly;

7. Use needle-nose pliers to press the tracheal interface, pull out the trachea, and remove the patch head; Note: The trachea of the patch head is difficult to take out. For this type, be careful not to unplug the inner tracheal connector.

As long as the SMT placement machine is regularly maintained according to the above methods, it is not a problem to extend the service life of the machine. This is also one of the methods to improve productivity and effectively control production.

SMT patch processing requires strict quality control

The SMT component occupies a small space, and a single component can perform multiple tasks. The advantages of SMT can be easily seen in design and manufacturing. At present, most products are manufactured using surface mount technology. Supplier infrastructure and the number of skilled buyers have improved significantly. However, the SMT standard that best describes the use of SMT production methods is: the product to be manufactured is small, when the product can accommodate a large amount of memory, the final product needs to be stylish and light, the product must run at high speed and high frequency, and in large quantities Automated technology is used in the production of the patch, the product must transmit little or no noise, and the product can accommodate many complex integrated circuits with large and high lead counts.

In recent years, with the impact of the economic crisis and the impact of the global economy, many electronics manufacturing will be greatly impacted. Coupled with the continuous rise of raw materials, labor costs will also rise steadily, so electronics The industry faces a very big challenge. The low cost of labor in the past is not an advantage. If electronic companies want to continue to develop, they must change the original development route and also need to control costs so that they can find a way and want to make great progress. Then you need to change the technology, you can selectively consider the processing method of SMT patch processing, now in many developed countries will choose this processing method, especially in some energy-saving, lighting technology development can be very good, improve work efficiency.

Today's PCB circuit board products are developing with high precision and miniaturization. The perforated plug-in components used in the past have been difficult to achieve component installation. Especially large-scale and high-integration ICs must use SMT surface mount components to meet production requirements. SMT chip processing is a kind of surface assembly components without leads or short leads, referred to as SMC or SMD, called chip components in Chinese, mounted on the surface of a printed circuit board or other substrates, through reflow soldering or Dip soldering and other methods to solder and assemble the circuit assembly technology.