What are the core components of an SMT production line?
2022/03/30
The primary function of this machine is to automatically load PCBs into the transfer table, which then flows to the solder paste printer. Most factories have already achieved fully automated board loading.
Located after the board mounting machine, the primary purpose of the solder paste printer is to print solder paste onto the pads of the PCB board.
Located after the solder paste printer, the SPI is used to inspect the quality of the solder paste printing. This prevents problems from being discovered after soldering, which would result in significant rework costs and time. Therefore, SPI is used to detect poor solder paste printing quality first, reducing the final defect rate.
The pick-and-place machine is primarily used to mount various components. There are high-speed pick-and-place machines and depletion pick-and-place machines. If production capacity is large, multiple pick-and-place machines can be combined for mounting.
The primary purpose of reflow soldering is to melt the solder paste and then solder electronic components onto the pads.
AOI is primarily used to check the soldering quality to prevent quality problems from occurring later.
X-RAY is not... Essential for production lines, X-ray machines emit radiation and are therefore used offline. After AOI (Automated Optical Inspection) testing, X-rays are used to inspect the soldering quality of BGAs and other ICs.
AI-powered automatic insertion machines are primarily used for inserting components, replacing manual insertion. They are generally used for high-volume production. Insertion machines are available in horizontal and vertical configurations.
Wave soldering primarily solders inserted electronic components using a wave-like soldering process. More advanced methods include selective wave soldering, which is generally more expensive.
Dispensing machines are primarily used to secure large components, preventing them from falling during transport and use.
Corner trimming primarily replaces manual corner trimming by cutting off excess leads from wave-soldered components.
Separating machines primarily cut panelized boards to create individual PCBA boards.
The above equipment represents the primary equipment in an SMT production line. This also includes other peripheral equipment such as pick-and-place machines, cooling pick-and-place machines, and buffer machines. Different companies may equip different products with different equipment, but pick-and-place machines, reflow ovens, and solder paste printers are essential. Therefore, the selection of production equipment depends on the product's manufacturing process and customer requirements.
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