氧乙炔焊通常采用火柴点火的传统方法，手持焊枪调节氧气开关和乙炔开关，同时另一只手腾出拿火柴伸到焊嘴去点火。操作很不方便也不安全，初学者常出观点不着人或者发生烧手事故。根据手头现有旧元件及一些废料为第二课堂学生制作了一台自动点火器，避免了上述缺点．实现安全 Oxyacetylene welding often uses the traditional method of match ignition, hand gun adjustment oxygen switch and acetylene switch, while the other hand to make a match to reach the welding tip to fire. Very inconvenient to operate or unsafe, beginners often come out of view or burning accident occurred. According to the existing existing components on hand and some waste for the second classroom students to create an automatic ignition, to avoid the above shortcomings. Achieve safety