Let's see the sequence of SMT placement machine

Speaking of SMT mounter, it is the equipment used in the early PCB process. Not used in wave soldering. It is a device configured behind the dispensing machine or screen printing machine to accurately place surface mounted components on PCB pads by moving the mounting head. Because of its small size, SMD components are not easy to be placed manually. The machine uses special glue to accurately and correctly place and paste the SMD components on it. Then perform reflow soldering. Reflow soldering: The reflow soldering machine heats the air or nitrogen to a high enough temperature and blows it to the circuit board with the components already attached, so that the solder on both sides of the components can be melted and bonded to the motherboard. Finish welding after cooling. Used for mounting components. Wave soldering: wave soldering is to make the welding surface of the plug-in board directly contact with the high-temperature liquid tin to achieve the purpose of welding. The high-temperature liquid tin keeps a slope, and the liquid tin is formed into waves by special devices. The pins of the plug-in can be welded after being "waved". It is used for welding plug-in components, which are usually placed manually.

SMT mounter is the equipment 

used in the early process of reflow soldering, that is to say, in the same SMT production line, the mounter process is before reflow soldering!

SMT patch

However, it will not be used in wave soldering. It is a device configured behind the dispensing machine or screen printing machine to accurately place surface mounted components on PCB pads by moving the mounting head. Because of its small size, SMD components are not easy to be placed manually. SMT placement machine uses special glue to place and paste the placement components accurately and correctly on the PCB. Then perform reflow soldering. Reflow soldering: The reflow soldering machine heats the air or nitrogen to a high enough temperature and blows it to the circuit board with the components already attached, so that the solder on both sides of the components can be melted and bonded to the motherboard. Finish welding after cooling. Used for mounting components. Wave soldering: Wave soldering is to make the welding surface of the plug-in board directly contact with the high-temperature liquid tin to achieve PCB welding purpose. The high-temperature liquid tin keeps a slope, and the liquid tin is formed into waves by special devices. The pins of the plug-in can be welded after being "waved". It is used for welding plug-in components, which are usually placed manually.