医药中转箱隧道滑块二次抽芯机构及简化型四次开模三板模具设计  

Design of Secondary Core-pulling Mechanism and Simplified Four-time Opening Three-platemould for Slider in Medicine Transit Box

作　　者：石峰 朱超挺 周天绮 董雷雷[2] 梁蓓[2] 王伟伟[2] SHI Feng;ZHU Chaoting;ZHOU Tianqi;DONG Leilei;LIANG Bei;WANG Weiwei(Zhejiang Pharmaceutical College School of Medical Devices, Ningbo 315100, China;Zhejiang Business Technology Institute Modem Mould Institute, Ningbo 315012, China)

机构地区：[1]浙江医药高等专科学校医疗器械学院,浙江宁波315100 [2]浙江工商职业技术学院现代模具学院,浙江宁波315012

出　　处：《中国塑料》2019年第8期118-126,共9页China Plastics

摘　　要：依据塑件的结构特点,设计了一种双层分型面4点点浇口简化型三板模具。在优化了塑件的脱模方式及运用计算机辅助工程(CAE)优化了塑件浇注系统的基础上,模腔布局采用1模1腔。针对塑件脱模困难的问题,设计了一种四面抽芯复合机构来实现塑件的自动脱模,配合以模板的打开动作,设计了一种复合式四面侧抽芯机构来实现塑件的完全脱模。脱模时,先利用动模板和定模板的打开动作,在气动顶出的顶出下,使型芯镶件先抽芯与塑件脱离,同时,通过斜T形槽驱动中央隧道滑块来驱动垂直抽芯镶件的先抽芯;而后通过2个油缸驱动四面4个滑块下行进行侧抽芯,同时,也辅助以气动顶出,将塑件从型腔镶件上拔出,塑件留于4个下行抽芯的滑块上,在跟随4个下行侧抽芯滑块的向下运动过程中,由于4个滑块在各自的斜导柱的驱动下,同步做侧向抽芯,塑件自动与4个侧面滑块分离,从而实现塑件的自动脱模。结果表明,机构设计构思巧妙,模具机构设计合理,能为同类塑件的模具设计提供有益参考。According to the structural characteristics of plastic parts, a simplified three-plate die with double parting surface and four-point gate was designed. On the basis of optimizing the ejection mode of plastic parts and optimizing the gating system of plastic parts with CAE, the mold cavity layout adopts one mold and one cavity. To solve the problem of difficult demoulding of plastic parts, a four-sided core-pulling compound mechanism was designed to realize automatic demoulding of plastic parts. With the opening action of the template, a compound four-sided core-pulling mechanism was designed to realize complete demoulding of plastic parts. When demoulding, the core-pulling of the core insert is separated from the plastic part by the opening action of the moving template and the fixed template under the ejection of the pneumatic ejection. At the same time, the core-pulling of the vertical core-pulling insert is driven by the slider of the central tunnel driven by the oblique T-groove, and then the side core-pulling of the vertical core-pulling insert is carried out downward by four sliders driven by two cylinders. At the same time, the plastic part is also assisted by the pneumatic ejection. When the part is pulled out, the plastic part is left on four downward core-pulling sliders. In the following four downward side core-pulling sliders, because the four sliders are driven by their respective oblique guide pillars, the side core-pulling is done synchronously, and the plastic part is automatically separated from the four side sliders, thus realizing the automatic demoulding of the plastic part. The mechanism design is ingenious and the die mechanism design is reasonable, which can provide useful reference for the die design of similar plastic parts.

关 键 词：复合滑块机构 四面抽芯 脱模 隧道滑块 机构设计 模具设计 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]