| 摘要 |
The present invention relates to a method and system for manufacturing a bulb. More particularly, the present invention relates to a method and system for manufacturing a bulb in which a flare and a dome are formed on both ends of a glass tube to thereby manufacture a bulb material tube, and a lower portion of the bulb material tube is heated and a blowing process is performed in a mold such that waste of the glass tube is prevented. A method for manufacturing a bulb, comprising: heating both ends of a glass tube of a predetermined length, then applying a pressure to both ends of the glass tube to form flares of an enlarged diameter on both ends; heating a center portion of the glass tube with flares formed at both end thereof while being rotated at a predetermined speed, and, at the same time, applying a force in the direction of both ends such that the separated center portion is closed off to form two closed off bulb material tubes; heating a lower portion of the bulb material tube while rotating the same; and performing blow forming by rotating the heated bulb material tube in a state where its lower portion is positioned in a mold, and injecting a gas in the bulb material tube through its flare to thereby form a bulb. The system for manufacturing a bulb includes a flare forming device, a bulb material tube separating device, and a blow forming device. |
