In the PCBA assembly process, a large number of specialized machines are needed to process and assemble PCB boards. The use of these machines plays a key role in the quality of PCB products. This article will discuss all the equipment used in PCBA assembly and manufacturing.
PCBA Equipment: Solder Paste Printer
Manufacturers apply solder paste to the circuit board during the solder paste printing process. The equipment used in this step includes:
Automatic Stencil Printer
In most cases, assembly manufacturers need to use a PCB or SMT stencil to apply solder paste in an efficient way. The stencil is made of stainless steel. Today, many PCBA assembly manufacturers use automatic stencil printers with laser cutting features to make the stencil.
Solder Paste Printer
The solder paste printer is used to apply solder paste evenly on the PCB. Then, the printer uses a blade to spread and fix the solder paste on the target areas of the PCB. These are the areas where PCB components will be placed in the next step.
Solder Paste Inspection (SPI) Machine
The solder paste inspection machine helps manufacturers check the accuracy and quality of the solder paste printing process. These machines can be very advanced. They can inspect the volume, height, and area of the solder paste deposits. They can also capture 2D and 3D images of the solder paste deposits and compare them with the stencil.
If the SPI machine finds any problem with the solder paste, the manufacturer must redo the solder paste printing. If not, the board can move to the next stage of the PCBA process.
PCBA Equipment: High-Speed Pick-and-Place Machine
Before the component placement stage, manufacturers prepare the components and the PCB for mounting. The most common PCBA equipment used in this stage includes the pick-and-place machine.
Pick-and-Place Machine
The pick-and-place machine automates this process by picking up components and placing them on the PCB with high accuracy. These machines are fast and precise. They can place up to 3,000 parts per hour. Once the pick-and-place machine has placed all the needed components on the PCB, the board can move to the next assembly step.
PCBA Equipment: Soldering
The two most common soldering methods for 高周波PCB assembly are wave soldering and reflow soldering. This process uses solder, flux, soldering irons / solder guns, and soldering stations. For smaller, high-precision products, manufacturers may still use manual soldering. However, manufacturers that handle large-scale production use one of the two machines below, depending on the method they choose.
Reflow Soldering Machine
Reflow soldering is still the most common soldering method in PCB assembly. Because of this, you can find reflow soldering machines in most PCB factories. A reflow soldering machine is a tunnel-type oven with a conveyor belt. It heats the PCB in a controlled way. This process makes sure the solder paste softens and then hardens, so a strong bond is formed between the PCB and its components.
PCBA Equipment: Inspection
Electronic Workshop and Inspection Equipment
Manual visual inspection is not enough. PCB testing is an important part of the assembly process. So, each PCB testing method needs its own tools and testing equipment.
AOI Tester
An AOI tester is made up of a computer, an interface, and a conveyor belt. For large-scale production, the whole process can be automatic. But in most cases, an operator needs to place the PCB on the conveyor line so the system can process it. The operator usually still supervises the inspection.
The interface includes a high-resolution camera that captures images of the PCB being tested. It sends these images to the computer, which compares them with the template. If the PCBA structure has no problem, the computer will show “PASS.” But if it finds any defect, it will show “FAIL” and alert the operator.
PCB manufacturing is very important. However, you should work with a company that can verify your design integrity and build the best PCB possible. The best PCB manufacturers use up-to-date equipment that matches your needs and the latest industry standards. These standards may include PCB prototyping and full final product inspection. As a professional PCBA assembly and manufacturing company, Fast Make Intelligent Manufacturing has the latest PCBA equipment to meet these needs and ensure production efficiency.
