| 摘要 |
PROBLEM TO BE SOLVED: To preventing the deterioration of the positioning operation of a circuit board and adverse influence to the bonding performance of electronic parts by preventing the occurrence of flash rubbish or a powder foreign matters due to the positioning operation of the circuit board. SOLUTION: Structure 16 for positioning a circuit board is provided with a circuit board 14 that has a reference hole 14a for positioning, a substrate placement member 84 that places the circuit board 14, a substrate-positioning member 18 that is fitted to the reference hole 14a for positioning the circuit board 14, and a cover member 72 that is provided while being freely opened and closed and presses down the circuit board 14 at a part to the substrate placement member 84 by changing from opening to closing state. In this case, as the positioning member 18, a spherical member for fitting to the reference hole 14a is used. |
