| 摘要 |
PROBLEM TO BE SOLVED: To form a straight glass tube 31a into a precise circular shape without deflection, which tube is heated and softened, in the manufacturing device of a circular fluorescent lamp. SOLUTION: The deflection of the straight glass tube 31a which is transferred between a pair of heating furnaces 1 is detected at the final position by CCD cameras 20a, 20b, 21a, 21b which are provided for detecting the deflection of the straight tube glass 31, and that deflection is corrected by moving each of tube receiving pins 2 by the XY drive mechanism 10a and 10b. And the straight tube glass 31a having no deflection is supplied to a bending machine. COPYRIGHT: (C)2004,JPO&NCIPI
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