General Info:
The RF welding machine CHALLENGE
WHEN sealing complex medical pouches. Blood bags. Urinary bags and similar products. High consistency and repeatability is required. However. This Isn’t the case with most RF sealing systems using standard oscillator tube RF generators. Their LOW frequency and harmonics Don’t allow efficient power coupling; tending to dissipate power. Only transferring 30 70% of total power to the load (sealing dies). Aside from the basic inefficiency of the equipment. Users also experience excessive down time mainly DUE to arcs and constant tuning of parameters and system components DUE to product and DIE changeovers on the same EQUIPMENT. ONEX RF automation. Duarte. CA. Specializes in the design and manufacture of manual and automated RF sealing systems for medical device. Automotive and other manufacturing industries. Known for its focused solutions. ONEX RF looks outside the BOX to develop innovative and sound solutions for process challenges such AS this ONE. RF welding. RF sealing machines. RF sealers. RF medical device welding. High frequency welding. RF weld blood bags. RF WELDINGONIK BOGOSYAN. President of ONEX RF automation. Explains that to improve RF sealing system efficiency. Coupling methods needed a technology upgrade. “instead of typical loading to the heat source. (which constantly created arcs DUE to the sensitive product nature) we looked AT a unique patented solution that uses solid state generator and direct coupling technology. This is similar to high END amplifier tuning AS used to obtain maximum audio wattage for quality sound. ” HE says. “by direct coupling we were sure we would BE able to transfer OUR amplified signal to the source with minimum loss in transaction and precisely control the power AT the load in TWO sealing cycles. ”
the concept of direct coupling allows the RF generator to transfer power direct to the load and with the servo controlled auto tuner system monitor the reflective power and constantly adjust the load impedance to achieve above 92% efficiency. The system runs more efficiently and consistently. While sealing the product to achieve maximum desired quality. The goal was to consistently deliver a more reliable and controllable process. Moving to hybrid generator for RF sealing ONEX RF turned to their expertise in hybrid technology. The hybrid technology immediately eliminated the arcing. Down time. Maintenance and operator safety issues. This in turn. Eliminated the issue of quick RF power degradation. Producing high quality seals with consistency and repeatability previously unknown in the RF welding industry. “the hybrid RF generator provides a consistent 27.12MHZ high frequency signal. Which is efficiently is tuned to the load using auto tuner in addition to consistency the generator power is SET via analogue signal from a PLC/PC based control system” BOGOSYAN says. “the hybrid RF generator and auto tuner provide consistent seal with minimal power loss. The analog signal allows the power to BE SET and maintained precisely throughout the seal cycle. And BE quickly changed to perform a different seal cycle. Based on OUR experience the system uses 50% less power than RF welders based on oscillator tube technology. ”.