Publish Time: 2022-04-27 Origin: Site
The work of Semi-auto SMT Production Line requires strict standardized operation and production process to form a complete production line system. Next, let’s talk about the key production process ofSemi-auto SMT Production Line.
This is the content list:
l What is the surface mount process flow of Semi-auto SMT Production Line?
l What is the mixing process of Semi-auto SMT Production Line?
l What is the auxiliary process of Semi-auto SMT Production Line?
①Single-side assembly: All Semi-auto SMT Production Line surface mount components are on one side of the PCB, incoming inspection-solder paste mixing-silk screen solder paste-patch-reflow soldering
②Double-sided assembly; Semi-auto SMT Production Line surface mount components are respectively on the A and B sides of the PCB. Incoming inspection-PCB A side silk screen solder paste-SMD-A side reflow soldering-flip board-PCB B-side screen printing solder paste-patch-B-side reflow soldering-cleaning-inspection-repair
①Single-side mixed assembly process: Semi-auto SMT Production Line plug-ins and surface mount components are all on the A side of the PCB, incoming inspection-solder paste stirring-PCB A side silk screen solder paste-patch-A side reflow soldering -PCB A-side plug-in-wave soldering
②Double-sided mixed assembly process: Semi-auto SMT Production Linesurface mount components are on the A side of the PCB, and the plug-in is on the B side of the PCB. First, the A and B sides of the double-sided PCB are mounted according to the double-sided assembly method Reflow soldering of the installed components, and then manual soldering of the plug-ins on both sides.
The auxiliary process of Semi-auto SMT Production Line is mainly used to solve the mixed process of wave soldering and reflow soldering. The first aspect is to print red glue. Its function is to print the red glue on the fixed position of the PCB. The main function is to fix the components on the PCB. It is generally used for both sides of the PCB with surface mount components and one side. For wave soldering, the Semi-auto SMT Production Line equipment used is a printing machine. Solder paste and red glue printing can be done by one machine, which is located at the forefront of the Semi-auto SMT Production Line.
The second aspect is curing. Reflow soldering is better for curing and leaded solder paste. Its function is to cure the patch adhesive by heating, so that the surface mount components and the PCB are firmly bonded together. Semi-auto SMT Production The line equipment is a reflow oven with a curing oven, which can also be used for glue curing and thermal aging tests of components and PCBs. It is located behind the placement machine in the Semi-auto SMT Production Line.