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www.us-tech.com


Reducing Soldering Cycle Times for Power Supplies Continued from page 68


Independent Pots The two solder pots in this dou-


ble soldering module are mounted on independent axes. This allows the VERSAFLEX to be used in conven- tional parallel operation and also in asynchronous mode, so that both pots move completely independently. Since each pot is mounted on a sepa- rate axis system, x, y and z directions can all be programmed individually. Siemens’ SITOP!Power supplies pro- vide power to the VERSAFLEX. Another crucial factor for


Schmidt was that the software be simple to operate and program. The parameters for each component on the board, such as flux application, wave pressure or soldering speed needed to be adjusted separately. “I am no longer forced to handle


the entire product with an average value,” says Schmidt. “This gives me greater flexibility and reduces sol- dering errors.” The software calcu- lates the optimal paths for the noz- zles and shares the solder between the two nozzles. The pots then do their jobs completely independently of one another, resulting in optimiza- tion, short cycle times and increased throughput.


Smart Features Today, nearly all forms of elec-


tronics manufacturing are under enormous cost pressure. The goal is to make as few errors as possible — ideally, none at all. Process reliabili- ty and zero-defect production have become critical to electronics manu- facturers. Ersa’s VERSAFLOW contains a verification feature that ensures the


right soldering tool has been attached. Process cameras monitor soldering wave height and nozzle wetting. If required, corrections can be made automatically.


Pacha tailored the material han-


Peripherals from Pacha Automation align perfectly with the VERSAFLOW 4/55. For the peripherals, such as


conveyor belts that transport prod- ucts from the pick-and-place machine to the soldering unit and lifting and lowering units, SIMEA brought in handling and automation specialist Pacha Automation.


dling systems to SIMEA’s manufac- turing needs and to the VERSAFLOW 4/55. After processing the LOGO! Power circuit board panels in the sol- dering system, the product is returned to the pick-and-place station by a lifting and lower- ing unit and a conveyor belt under the soldering system. The sub-boards are also pre- pared for soldering before the complete panel is sent to the VERSAFLOW. The finished motherboards are removed from the panels and sent on for final assembly. “In addition to cycle


times and quality, support


and advice are vital decision criteria, when it comes to investing in new equipment,” says Schmidt. “Service is uncomplicated and pleasant, reac- tion time is fast and we receive excel- lent advice.” According to Schmidt, the VER-


Based on Quality Assurance and soldering, but design-related defects can be identified as well. The inspection of one assembly


is performed during soldering of the following assembly for the shortest cycle times. The integrated AOI sys- tem inspects solder joints for remain- ing solder balls, non- or insufficient wetting, missing pins, bridging, or missing components. This solution is highly efficient, as the soldering and AOI units use the same x/y system. After soldering and inspection,


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SAFLEX is the best solution for SIMEA. The company can manage without a second soldering module or a high-cost dip system, which would also require more time during pro- duction changeovers. “The ERSASOFT 5 machinery


software with CAD Assistant 4 is a true highlight,” he says. “It makes program generation and adaptation very easy, and it even works while production is ongoing.” The VERSAFLOW 4/55 selec-


tive soldering system with the VER- SAFLEX module is Ersa’s first proj- ect for SIMEA in Vienna. With the successful implementation, the com- panies have built both an efficient production line and a foundation for future collaboration. Contact: Kurtz Ersa North


America, Inc., 1779 Pilgrim Road, Plymouth, WI 53073 % 920-893-1779 fax: 920-893-1562 E-mail: ernie.grice@kurtzersa.com Web: www.ersa.com r


Zero-Defect Soldering: Quality Management Continued from page 67


assemblies without defects and those with defects are automatically sepa- rated. Defective assemblies can be processed with another soldering system or can pass through the same selective soldering system again. In both cases, an automatic


rework process will be performed exclusively at the solder joints that are defective. With bidirectional data transfer, all process steps are com- pletely traceable and reproducible. For ensure consistent, high product quality and zero-defect pro-


duction, all process steps must be carefully controlled. Manual rework is costly and does not always offer the best results. It is also difficult to trace. Greater automation offers greater control, efficiency and the ability to integrate rework into the production line, freeing up human operators to focus on other tasks. Contact: SEHO North America,


Inc., 1420 Jamike Drive, Suite 300, Erlanger, KY 41018 % 859-371-7346 E-mail: sehona@sehona.com Web: www.sehona.com r


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Z-AXIS CONTROLLER CABLE Connector Type: High-density Dsub, 44 pins. Connector must have machined pins and metal shell. Use AMP part 778224-6.


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