SMT processing in the machining process, need to use some fully assembled circuit board production equipment, testing SMT processing factory processing ability also depends on the performance of the production equipment and production equipment.
1、Solder paste printing press
Modern tin paste printing press is generally composed of printing, tin paste, imprinting, transmission substrate and other institutions.The working principle is that the printed circuit board is first fixed on the printing positioning platform, and then the solder paste and red glue are leaked to the corresponding solder pad through the steel mesh with the left and right scraper of the printing machine, and the PCB with uniform leakage is input to the SMT through the transmission platform for automatic SMT.
2、 Patch machine
Patch machine: also known as Patch machine, Surface Mounting System (Surface Mounting System), which is configured on the production line after the cream printing press, is the production equipment for correctly configuring the surface Mounting Machine by moving the Mounting Machine.According to the installation accuracy and installation speed, usually divided into high speed and ordinary speed.
There is a heating circuit inside the reflow soldering. After the air and nitrogen are heated to a high enough temperature, they are blown to the PCB board that has been attached to the parts, so that the solder on both sides of the parts can be melted and bonded to the main board.The advantages of this process are that the temperature is easy to control, oxidation can be avoided in welding, and the production and processing cost is easy to control.
4. AOI detector
AOI full name Utomaticoptic principle for detection of common defects in welding production production equipment.AOI is a new test technology, but it develops rapidly. Many manufacturers have launched AOI test equipment.During automatic detection, the machine automatically scans the PCB through the camera and collects images. The solder joints tested are compared with qualified parameters in the database. Defects of the PCB are detected through image processing and repaired by the maintenance personnel through the display or automatic display of defects/displays.
5、Parts shearing foot machine
Used to cut and deform foot parts.
6. Wave soldering
Peak welding is to make the welding surface of the plug-in plate directly contact the high-temperature liquid welding to achieve the purpose of welding, and the high-temperature liquid welding keeps the inclined plane, because the special device makes the liquid welding to form a phenomenon similar to wave, so it is called peak welding, and the main material is the welding rod.
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