| 摘要 |
In a stator injection molding centralization technique, a mold core is disposed inside a stator tube, thereby forming an annulus between the stator tube and mold core. The mold core includes a pitch length defined between a first and second lobe tip of the mold core. A centralizing member is positioned in the annulus, which has a length at least as long as the pitch length of the mold core. During the injection molding process, elastomeric material is injected into the annulus behind the centralizing member, which is located adjacent to the injection point. As the elastomer is injected, it displaces the centralizing member ahead of it along the annulus. As the centralizing member moves through the annulus, it supports the mold core, thus preventing the sag effect. |
