汽车进气歧管下壳注塑模设计及加工工艺

Design and Processing Technology for Injection Mould of Automobile Intake Manifold′s Lower Shell

对汽车进气歧管下壳注塑件的结构特点进行了分析,发现其结构复杂,侧孔较多,需要多角度抽芯,设计和加工难度大。尤其在该注塑件的出气口位置,出气口角度与固定法兰脱模角度不一致,且这两个部位的成型动作必须由一套机构实现,是本套模具的设计难点和重点。针对以上问题,综合运用了多种脱模方式,通过采用斜导柱沿滑道斜面运动结合油缸驱动滑块零件运动的方法解决了上述难题,同时采取合理的加工工艺方法,成功完成了模具的设计和制作。实际生产证明,模具各机构设计合理,运行平稳。

By analyzing the structural characteristics of automobile intake manifold＇s lower shell, it is found that the structure of the shell is complex with many side holes and its demoulding process also needs multi-angle core pulling, which increases the difficulty of the design and processing. Especially in the air outlet position of the shell, the air outlet angle and fixed flange demoulding angle are inconsistent, and forming actions of these two parts must be implemented by a set of institutions, which is the difficulty and focus of the mould designing. In view of the above problems, a variety of demoulding ways were comprehensively used, so the above problem was solved by combining the movement of angle pin along angular surface of slideway with the movement of slide parts derived by oil cylinders. The reasonable processing technology was adopted for contributing to the design and production of the mould. The practical production proves that the design of the mould is reasonable and the operation is stable in production.