SMT production lines can be divided into automatic production lines and semi-automatic production lines according to the degree of automation, and can be divided into large, medium and small production lines according to the size of the production line. Fully automatic production line is refers to the whole production line equipment is fully automatic equipment, through the automatic machine, unloading machine and buffer line will be all together as an automatic line production equipment, semi-automatic production line is the main production equipment is not connected or not connected, printing machine is semi-automatic, need artificial printing or loading and unloading of PCB.
1. Printing: its function is to leak the solder paste or patch glue onto the solder pad of PCB to prepare for the welding of components. The equipment used is the solder printing machine, which is located at the front end of the SMT production line.
2, dispensing: it is to drop the glue into the fixed position of PCB, its main role is to fix the components to the PCB board. The equipment used is the dispensing machine, which is located at the front end of the SMT production line or behind the testing equipment.
3, mount: its function is to accurately install the surface assembly components on the fixed position of PCB. The equipment used is a pick and place machine, located behind the printing press in the SMT production line.
4. Curing: its function is to melt the patch adhesive, so that the surface assembly components and PCB are firmly bonded together. The equipment used is the curing furnace, which is located behind the SMT production line.
5. Reflow soldering: its function is to melt the solder paste and make the surface assembly components and PCB firmly bonded together. The equipment used is a reflow oven, located behind the SMT SMT SMT production line.
6. Cleaning: its function is to remove the welding residues (such as flux, etc.) that are harmful to human body on the assembled PCB. The equipment used is the cleaning machine, the position can be not fixed, can be online, but also not online.
6. Test: its function is to test the welding quality and assembly quality of the assembled PCB. The equipment used includes magnifying glass, microscope, on-line Tester (In circuit Tester, ICT), flying needle Tester, Automated OpticalInspection (AOI), X-ray detection system, function Tester, etc. The location can be configured in the appropriate place of the production line according to the needs of testing.
8. Repair: its function is to rework the PCB that has detected faults. The tool used is the soldering iron, which is generally carried out in the repair workstation.
Post time: Jan-22-2021