Bluetooth headsets are very common in our daily life. We can listen, play, and play games. No matter what you're in, wearing Bluetooth headphones is like having a small world that belongs only to you. We all know that the sound of Bluetooth headsets is generated by the transmission of electromagnetic waves, which work through the converter parts welded by the integrated circuits inside the headphones. Let's take a look at the processing application of Bluetooth headsets.
The PCB circuit board space in Bluetooth headsets is very narrow, with integrated electronic components and connectors, and the shells are mostly plastic shells. How to weld the connectors of internal electronic components has become a big problem in the industry.
The processing of reflow soldering is very cost-effective, and there are many consumables. And because the circuit board of the Bluetooth headset is very small and the solder joints are also very small, the cost of purchasing and processing reflow soldering equipment for the first time is very high, and the cost of tin in the heating furnace is also very high, so it is really difficult to make ends meet with reflow soldering in the Bluetooth headset industry.
First, the labor cost is getting higher and higher, and then the solder joints of the earphone circuit board are very small, and the welding head is much larger than the solder joint range, resulting in inaccurate soldering and wasting too much welding consumables. In addition, the edge part is a plastic part, and if you are not careful, it is easy to burn the plastic part of the edge part. Moreover, the efficiency of manual welding is very low, and the yield rate is also determined according to the proficiency of the processing personnel. As a result, larger Bluetooth headset manufacturers will not choose to use manual soldering irons for soldering.
The feature of the laser welding machine is that the spot can be adjusted freely, and the appropriate laser spot can be adjusted according to the size of the solder joint. In addition, the main working method of the laser welding machine is non-contact welding, which can avoid burning the plastic parts on the edges while welding the material. In addition, the temperature of the laser welding machine can be adjusted, and other substrates will not burn out during welding. Laser welding machines use fixtures to control the position. The employee simply places the product to be processed on the fixture and then completes the welding action by laser welding. It belongs to precision welding, and the yield is very high. The time of one solder joint of the laser welding machine is controlled within 3 seconds, so the higher the efficiency.