| 摘要 |
PURPOSE:To suppress the generation amount of side burr caused after resin molding and delete an influence of the side burr exerted on an outer dimension of a frad frame and process with high precision and resolve a problem that the side burr drops when carrying the lead frame. CONSTITUTION:A lead frame is set in a set recess part of a lead frame 12 of a mold die 10 and a dierunner 16 extends onto the lead frame 12 crossing side edge of a rail part to be molded with resin. A cutout part 18 that has a size larger than a width passing an all width of the dierunner 16 in a side edge of the rail part crossing the dierunner 16, and that has a side edge part positioned by using a position of a guide hole 12a provided in a lead frame material as a reference and engaged with an end edge of a projection 20 provided so as to project from an inner wall surface of the set recess part is provided. |
