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What are the main SMT equipment of SMT production line
What are the main SMT equipment of SMT production line

What are the main SMT equipment of SMT production line


The full name of SMT is Surface mount technology, which means surface mount technology in Chinese. SMT equipment refers to the machines or equipment used in the SMT processing process. Different manufacturers can configure different SMT production lines according to their own strength and scale and customer requirements. For the semi-automatic SMT production line and the fully automatic SMT production line, the equipment of each SMT production line is different, but the following SMT equipment is a relatively complete and abundant configuration line.

Loading machine: PCB board is placed in the shelf and automatically sent to the suction machine

Suction board machine: pick up the PCB, place it on the track, and send it to the solder paste printing machine

Solder paste printer: accurately leak solder paste or patch glue onto the PCB pads to prepare for component placement.

pcb board

The printing machines used for SMT are roughly divided into three types: manual printing machines, semi-automatic printing machines and fully automatic printing machines.

SPI: SPI is the abbreviation of Solder Paste Inspection. It is called solder paste inspection machine in Chinese. It is mainly used to detect the quality of the printed PCB board of the solder paste printer, and to detect the thickness, flatness, and printing area of the solder paste printing.

Placement machine: use the program edited by the equipment to accurately install the components on the fixed position of the printed circuit board. The placement machine can be divided into a high-speed placement machine and a multi-function placement machine. The high-speed placement machine is generally used for small placement Chip components, multi-functional unused placement machines are mainly used to mount large components or heterogeneous components in rolls, disks or tubes. They are characterized by high placement accuracy, but the placement speed is not as good as high-speed machines.

Docking station: a device for transferring PCB boards.

Reflow soldering: Located behind the placement machine in the SMT production line, it provides a heating environment to melt the solder paste on the pad, so that the surface mount components and the PCB pad are firmly combined with the solder paste alloy.

Unloading machine: Automatically receive PCBA through the transmission track.

AOI: Automatic optical identification system, which is the abbreviation of English (Auto Optical Inspection), and is called automatic optical inspection in China. It is now commonly used in the appearance inspection of circuit board assembly lines in the electronics industry and replaces the previous manual visual inspection. During automatic inspection, the machine automatically scans the PCB through the camera, collects images, compares the tested solder joints with the qualified parameters in the database, after image processing, checks out the defects on the PCB, and displays/marks the defects through the display for Repair by maintenance personnel.

X-RAY: Mainly used to detect the mounting quality of various industrial components, electronic components, and circuits.