Full Bridge 컨버터 방식을 사용한 35W급 CO2 마킹 레이저의 개발에 관한 연구

Abstract

The purpose of the study is to develop a laser marking machine using the 35W level CO2 Pyrex tube. This full bridge design has been developed as better solution than the traditional design. The study analyzed the voltage power unit, which controled IGBT using KA3525 integrated circuit of pulse width modulation (PWM). High Voltage power unit has two modes of CW and PULSE. High voltage power unit controls the Laser output mode. Next CW(continue mode) and PULSE(pulse mode) are measured by energy meter. Mechanism of stepping motor and F-θ lens controls an actual laser marking. The following are specifications of stepping motor and F-θ lens. The size of laser marking unit is each 300 mm x 300 mm. because select product of focal length 50mm. Laser marking unit made by the study allows an optimum design program to print what we want. The study shows the possibility of printing a pattern with a simple shape of line and square. The study can be used to make a better laser marking skill than the existed one. It can be commercialized through the future study.