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Application of dispensing machine in fingerprint identificat

编辑:周周   日期:2019-10-24 09:08   浏览:

Application of dispensing machine in fingerprint identification
The structure of fingerprint identification. At present, the common fingerprint identification on the market mainly includes four solutions: front and back pressing, front and back sliding. In the application of dispensing machine, we usually click underfill glue around the chip. The common glue is 3808 and 3806. Apply conductive adhesive to the gold finger on the FPC.
Fingerprint identification coating dispensing
According to the dispensing machine application process. There are two main ways, one is to use the structural way of the mosaic, the other is to cut into small plates first, and then glue. One of the processes is to mount, reflow, preheat and then solidify. Common filling, single side dispenser, or L-type including C-type, currently for fingerprint identification, we usually use four sides to dispensing.
According to the application of the dispensing machine, the basic requirements are very high. First, the four sides should be evenly dispensing; second, the unilateral distance should be less than 0.4mm; third, the glue is greatly affected by environmental factors; fourth, there should be no cavity or bubble at the bottom, and the number of UPH should be more than 1500.
The way of feeding is usually the way of feeding the whole material box. The main solution is to adopt full-automatic, including dispensing machine with loading and unloading system, and then cooperate with piezoelectric ceramic spray valve, and then select appropriate nozzle, including identification with laser sensor.
Small 331 dispensing machine
The whole working process is that the operator puts the material box on the machine, pushes the material automatically, heats the PCB board, then the CCD identifies and sprays the dispenser, then the PCB insulates, then pushes and cuts the material.

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