Design of injection mould for paper shredder storage barrel plastic parts
A complex injection mould was designed based on the appearance characteristics and molding requirements of a paper shredder storage barrel,which included a oil cylinder core pulling mechanism of tunnel slider in fixed mould,a ejector plate with angular lifter core pulling mechanism,an angular lifter with ejector sleeve and pogo pin structure.The ejector plate with angular lifter core pulling mechanism was used for demoulding the two undercuts on the inner view surface of the plastic parts.The angular lifter with ejector sleeve and pogo pin structure successfully solved the demoulding problems of four pillar undercuts inside the plastic parts.The oil cylinder core pulling mechanism of tunnel slider in fixed mould was used for demoulding the undercuts on the appearance surface of the plastic parts.The ejector plate drove the angular lifter for core pulling while simultaneously pushing out the plastic parts to complete the ejection,eliminating the need for a ejector retainer plate structure in the mould structure.During the production and debugging process of the mould,there was no interference in the various ejection and core pulling mechanisms.Further optimization design of the mould structure was used for solving the common problems that may arise during plastic molding.After the mould was put into use,30 000 plastic parts had been produced,and the dimensional accuracy and appearance quality requirements of the plastic parts could meet expectations.
paper shreddercore pulling mechanismejector plate mechanismoil cylinderejector sleeve structure of angular lifterpogo pin structure
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