| 摘要 |
PROBLEM TO BE SOLVED: To provide a mold for O-ring which can reduce a squeezed-out rubber remaining in the O-ring. SOLUTION: This mold is structured of a top force and a bottom force and vulcanization-molds the O-ring formed of rubber. The O-ring is molded in a cross-section passing through the center of the O-ring when the top force and the bottom force come into contact with each other. In addition, the mold has a rhombic cavity part which is a rhombic cavity located 0.1 to 0.2 mm across from a first circular cavity part which is a circular cavity, centering a contact line between the top force and the bottom force. Besides, this rhombic cavity part exists on both sides of the first circular cavity part. COPYRIGHT: (C)2007,JPO&INPIT |
