| 摘要 |
PURPOSE:To eliminate bonding variations induced by the directional property of a lead frame with respect to vibrating directions by mounting a welding jig to a twisting vibration horn which is making a twisting motion. CONSTITUTION:A welding jig 2 is mounted to the lower end of a twisting vibration horn 1. The welding jig 2 is lowered with the twisting vibration horn 1 in such a manner that the welding jig 2 presses slightly a lead wire 5 on a lead frame 4 set to a base 3. Then, the vibration from a twisting vibrator is transmitted to the twisting vibration horn and provides the twisting vibration to the welding jig 2, thereby bonding the lead wire 5 with the lead frame 4. It is, therefore, possible to eliminate bonding variations induced by the lead frame direction with respect to the vibrating directions. |
