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阐述了用于生产中φ30mm塑料暗管片材自动送料冲模的结构、工作原理及自动送料机构的设计过程。经生产实践表明，该模具完全满足片材生产技术要求。
The structure, working principle and design process of automatic feeding mechanism are described for the automatic feeding die of φ30mm plastic tube in production. The production practice shows that the mold fully meet the technical requirements sheet production.