Following the adoption of the PumpPrint process from DEK printing machines and the installation of DEK Infinity printers, Tianjin-based OEM HEG has made significant improvements to its adhesive application process yields.
The company uses the machines to apply SMT adhesives for their automotive and consumer electronics products, replacing their SMT dispensers.
Since the installation of the printers, overall production defect rates have dropped to 20-30 ppm, as confirmed by HEG's quality assurance measures, which include 2-D inspection, visual inspection, AOI and electrical test. The company also reports that throughput for boards that require adhesive application has increased to more than 135 PCBs/hr, and over 81,000 adhesive dots/hr.
According to HEG, a major advantage of the PumpPrint process is its ability to operate even in harsh environmental conditions, as the process can adapt to quite a range of temperature and humidity conditions and glue viscosity levels.
HEG currently operates 21 automatic insertion machines, seven fully automatic SMT lines and nine manual assembly lines, reportedly achieving 8.16 million SMD placements/day and 8.68 million insertions/day.
Board-Lok ESD-safe molded tooling is designed to support PCBs in a firm, locked position parallel to the stencil.
The customized tooling can eliminate problems seen with conventional stencil printer tooling because it does not require vacuum to support the board. If the PCB is held by vacuum cups, the solder paste can be drawn through the via holes, contaminating the board and vacuum system.
Transition Automation Inc., www.transitionautomation.com
EasyTurn is a modular ‘T'- shaped junction that will send a board, on command, in either of two different directions, depending on need. When integrated with an AOI system, it can send defective PCBs to a magazine loader or to a rework station, while failure-free boards move directly to the reflow oven. Automatically adjusts to the specific width of each incoming board to prevent dropping or damage.
CAN-Bus controlled unit with full SMEMA compatibility for easy integration into any conveyor line. Can also be used as a linking unit from two conveyor lines into one reflow oven.
MIMOT, www.mimot.com