| 摘要 |
PROBLEM TO BE SOLVED: To satisfy a relative height precision of a protrusion and a molding member, even when the heights of parts with the protrusion to be molded are not uniform by compressing a projecting part to the specified thickness with the help of the member coming into contact with the tip of the projecting part of a platelike member of a cavity side part of a mold and a part coming into contact with the back face of the projecting part of the other side part of the mold. SOLUTION: A core pin A10c coming into contact with the tip of a center pole 1a of a yoke 1 during insert-molding, is provided in an insert 10a of a bottom force 10, and the back of the center pole 1a is firmly supported by a core pin B11b with a sufficient inner diameter of a top force 11. Both core pin A10c and core pin B11b are highly rigid from a viewpoint of mold structure, so that the center pole 1a of a comparatively pliable material is compressed to a specified size in the process of insert molding. Thus it is possible to precisely set the value of a void (g) in the same mold interior at an expected void value g0 and thereby easily set the dispersion of the void value (g) of a finished product within the tolerable range. Consequently, the mutual size between the protrusion and the resin-molded part can be precisely set as specified. |
