The entire maintenance work platform, also known as the maintenance system software at the pcba production plant, consists mainly of surface-based electronic devices (smds) such as bga, csp, qfp, plcc, soic, etc., for the maintenance of circuit boards. The smd maintenance work platform consists of top-heating, bottom-heating, electronic optical-to-medium-system software, temperature feedback mechanisms, overall architecture, pcb workshop kits, pc and operational app. Since the points of bga are welded at the bottom of the metaware and are not visible, welding bga again requires that the maintenance system software be equipped with a spectrometric visual recognition system to ensure that bga is correctly matched when the smt production package is maintained。
Bga maintenance machinery and equipment requires:
1 medium-system software with vision visual image
2. Temperature linear testing is desirable
3 has a bottom warming effect and can heat the bottom of the pcb to avoid contraction
When heating is used, the jet type is selected as much as possible
For a long period of time, new forms of packaging such as csp and inverted sentence integration ic, pop etc. Are maintained。
Different pcb producers, the difference in their maintenance system software depends critically on different sources of heating or thermal cyclone methods. The most common sources of heating are the warmer wind, the infrared, and the warmer wind。
1. Warm wind maintenance system software
Also known as the heating workshop, it is the most common maintenance system software. The heater working platform consists of the server control panel software, the heating system software, the heating system software at the bottom of the operating table, the operating table for the printing of circuit boards, the medium spectrometer software, the high pixel surveillance camera and the tan colour monitor. The temperature curve can be monitored and adjusted at any time and place during maintenance。
The main features of the heating maintenance system software are that smd and base or surrounding electronics are not easily destroyed; different types of jets are required for different smd maintenance; and pcb design takes into account the loss of 3-5 mm of indoor space。
2. Infrared warming maintenance system software
Infrared heating maintenance system software selects infrared heating, spectroscopy (red, white) software for the successful selection, visualization divides medium heating into two places, i. E., first visual pairing of medium and paste elements, and then moves the operating table to the lower of the electrostatic heater for welding. If an endoscopy system software is in place, the bga, the csp welding welding is visible in the instant images of the two ground-based sinking of the ball。
The main features of the infrared and temperature maintenance system software are that no no nozzles are used for maintenance and that the design programme needs to take into account the availability of smaller room space for maintenance; the maintenance of more suitable, dense pcb assembly boards (e. G., circuit boards on mobile phones); and the repair of smd meta-devices such as bga and poached electronics。
3. Warm wind-infrared maintenance system software
The heating-infrared maintenance system software is used to heat up at the top and infrared at the bottom. The heating-infrared maintenance system software integrates the advantages of the heating wind and infrared two maintenance systems; warms fast; heats at the bottom are sufficient to heat up the entire pcb circuit board and the temperature is even; and maintenance is more appropriate for medium-sized and medium-sized plates and heavy metal-free commodities。
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