| 摘要 |
PROBLEM TO BE SOLVED: To obtain an injection mold device which can prevent the roughness of a mold surface contacting with an undercut part without generating a step on the mold surface so that an inclination degree of the undercut of the mold is not restricted.SOLUTION: An injection mold device includes: a fixed side insert die where a protrusion forming a cavity and one undercut part of a mold on a surface facing the cavity is provided; a movable side insert die where a protrusion forming a cavity and the other undercut part of the mold facing the cavity; a spinning insert die through which the movable side insert die is insert; and a spin moving mechanism for making the spinning insert die spin and move it in a direction of the fixed side insert die. |
