| 摘要 |
PURPOSE: An ejection device of an undercut-shaped product mold is provided to prevent the burr generation, deformation, size variation of a molded product because a deformable ejection core is not moved by pressure when a material is injected into a cavity of a mold. CONSTITUTION: An ejection device of an undercut-shaped product mold comprises a guide groove(120) and a deformable ejection core(110). The guide groove is formed in the inside of a first mold(100) in a diagonal direction. The deformable ejection core is moved along the guide groove in the diagonal direction by power being transferred from an ejector pin(300). One or more projections(115) for forming an undercut is formed in one surface of the deformable ejection core and a blade portion(112) is formed in an opposite surface of the deformable ejection core and inserted into the guide groove. |
