注射模小型抽芯机构的设计——注塑模具类外文文献翻译.doc

翻译原文一： Design of Small Core Drawing Mechanism for Injection Mould Wu Guang ming Dongguan Science and Technical School, of Guang Dong province Dongguan 523000 Abstract: Four kinds of small and nimble core drawing mechanism for injection mould of case type plastic items are introduced in details. Key words: injection mould, core drawing, sliding block Case type plastic items play an important role in the production of modern plastic-electronic items. In general, knots sometimes together with a bolt are used to enhancer and smooth the surface of the electronic products. A mould often holds several work pieces, and core drawing is used many times in just one work piece. If we use traditional outside slanting pillar or inside slanting slide block in core drawing, the mechanism of the mould would be very complicated. In practice, Figure 1 1. moving die insert 2. moving die pate 3. spring 4. core slide block 5. fixed die insert 6. fixed die plate 7. lock insert block 8. center pin 9. spring 10.fixed plate of moving die according to the property that the stroke of core drawing of plastic items is very short, several kinds of core drawing mechanisms are designed as follows. 1 Outside core drawing mechanism Outside core drawing mechanism as in Fig.1 is similar to traditional slanting pillar core drawing mechanism, Because of the short stroke of core drawing, slanting pillar is removed. Lock insert block 7 and core slide block 4 serve together to accomplish the action of reset and lock. When the mould is opened, moving die and fixed die are parted and core slide block 4 finishes core drawing under control of spring 3. Center pin 8 is used to locate the core slide block. Core slide block 4 has T guide way machined to ensure the accuracy of core drawing movement. Figure 2 1. moving die insert 2. center pin 3. core slide block 4. fixed die insert 5. lock insert 6. fixed die plate 7. spring 8. moving die plate 2 Inside core drawing mechanism Slanting