SMT placement process and required equipment

The rapid development of industry is both an opportunity and a challenge for the electronics industry. Today's electronic products are showing the characteristics of miniaturization, lightness and thinness, and multi-functionality, and more stringent requirements are put forward for circuit boards. In order to realize these miniaturization and high integrated circuits, SMT chip processing technology is needed. achieve.
 
POE PCB manufacturing is a first-class manufacturer integrating high-precision circuit board production and SMT chip processing. With advanced production equipment, rich manufacturing experience and standardized production lines , it can perform difficult SMT patch processing, not only can achieve complex industrial requirements, It can also speed up production efficiency and provide customers with the best quality and fast service.

POE SMT line process equipment
Automatic loading machine-automatic printing machine-SPI inspection machine-high speed placement machine-multifunctional medium speed placement machine-FAI first piece test-10 temperature zone reflow soldering-AOI-wave soldering-automatic washing machine-AOI
 
Equipment required for SMT placement

1. Automatic printing solder paste:
The solder paste is printed on the PCB board with the stencil to the pad of the electronic component SMD that needs to be soldered to prepare for the soldering of the components. The equipment used is a screen printing machine, located at the forefront of the SMT patch processing production line. POE technology uses a fully automatic printing machine and international brand Colite dsp888 solder paste, which can speed up production efficiency while ensuring welding quality.
 
2. Automatic placement machine:
It is to accurately install the electronic components SMD on the fixed position of the PCB. The equipment used is a placement machine, located behind the screen printing machine in the SMT production line. The placement machine used by POE Technology is the SM471 PLUS high-speed placement machine and SM481 medium-speed placement machine from Samsung. This equipment has two loading modes: push board and vacuum suction board, and can stack 200-300 PCB boards at a time , The placement precision is very high, and it is one of the most high-precision placement equipment in all placement machine systems. It is equipped with a cantilever and 10 shafts, a new flying camera and excellent suction/mounting action, which achieves a speed of 39,000CPH in the same product.
 
3.FAI
We will make a sample of all the boards before putting them into mass production, conduct the first comprehensive quality inspection test, and confirm that there are no problems before putting them into mass production.

 

4. Reflow soldering:
The main purpose is to melt the solder paste at high temperature, and after cooling, make the electronic components SMD and PCB board firmly welded together. The equipment used is a reflow oven, which is located behind the placement machine in the SMT production line. It adopts a newly imported 10-temperature zone reflow soldering machine with three cooling zones and water tower cooling. Unlike other U-shaped reflow heating tubes of other companies, POE technology reflow soldering uses a sandwich structure of upper and lower heating plates, which can make heating more balanced.
 
5. X-RAY detection
After the reflow cycle, all circuit boards including BGA, QFN or other lead-free package types will be sent for X-ray inspection.
 
6.AOI
POE's new AOI automatic optical inspection machine is used for prototype PCB and mass production. PCBA for POE 100% AOI testing: Automatic Optical Inspection (AOI) is an automatic visual inspection performed by manufacturers of printed circuit boards (PCBs) (or LCDs, transistors), in which the camera automatically scans the device under test for catastrophic failure ( For example, missing components) and quality defects.
 
7. Fully automatic washing machine:
Its function is to remove the solder residues such as flux that are harmful to the human body on the assembled PCB board. After the circuit board is soldered, the circuit board must be thoroughly cleaned in time to remove residual flux, oil, dust and other dirt.

The above introduction hopes to be helpful to you. You can choose to contact POE Technology to provide you with one-stop PCBA services from PCB design, PCB production and proofing, PCBA processing,smt pcb assembly chip processing, circuit board soldering, PCBA foundry materials, etc. , Allowing you to save time and energy, production costs and dedicated to the development and sales of new products.