注塑模具滑块机构的设计
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模具技术2007.No.5 27
文章编号:1001.4934(2007)05-0027-03
光盘注塑模具关键机构的设计
余蔚荔l,余冠洲
(1.广东机电职业技术学院机电工程系,广东广州510515;
2.广东工业大学实验教学部工程训练中心,广东广州510075)
摘要:详细介绍了光盘注塑模具的结构,并重点阐述了其中的一些关键结构的设计,如
安装金属模片的专用夹具;动镜面、定镜面、浇口及冲子的冷却水路以及气动脱模机构
等
关键词:光盘;注塑模具;冷却系统;脱模机构
中图分类号:TG241 文献标识码:B
Abstraet-Structure of CD inj ection mould was introduced in detail.Key structures such as
the holder for mounting metal template,stamper,cooling water channel of moving plate,
stationary plate,sprue as well as knockout and pneumatic mechanism were emphasized.
Keywords:CD;injection mould;cooling system;knockout mechanism
0 引言
光盘看起来结构简单,但实际上具有一些
特殊的结构:(1)光盘工作一侧的表面上具有
相当多的、类似尘埃大小的细小凹坑(称作CD
凹点),这些凹坑就是用来携带所需信息的,
如何能在批量生产中高清晰、高精度地加工出
这些凹坑是一个较大的难点;(2)光盘的厚度
较薄,如cD.ROM碟片的厚度只有1.12 mm,
直径 120 mm,是一个典型的薄壁塑件(图
1),因此在批量注塑生产中容易因冷却不均匀
而产生翘曲、变形。
如何解决以上难点是光盘注塑模具设计中
最关键的问题。本文从这些难点出发来探讨光
龙源期刊网
注塑模具斜侧抽芯机构的设计
作者:马波
来源:《科技视界》2014年第05期
【摘 要】本文介绍存在有斜孔或斜凸台倒扣塑料产品的注塑模具抽芯机构的设计。
【关键词】上夹盖;倒扣;斜侧滑块;PL面
0 前言
在塑料模具产品中,有些产品的侧壁存在孔和凸台,产品成型后这些部位阻碍产品的出模,产品没有办法顶出,这种现象在模具设计中属称倒扣。在模具设计中倒扣有很多中类型有内倒扣、外倒扣,而外倒扣还分为与PL面平行型的水平倒扣和与PL面成一定角型的斜型倒扣,其中斜型倒扣在模具设计中是最难解决的一种倒扣,本文以夹式台灯的上夹盖为例,论述斜型倒扣的斜侧滑块机构设计。
1 模具及塑料产品分析
1.1 塑料产品分析
如图1所示的产品材料为ABS,塑料件属于外观件,如图所提示的斜孔与产品的水平方向的角度为45度,斜孔的倒扣深度为3mm,必须采用斜侧抽芯机构才可以顺利脱模。
1.2 模具分析
从塑料产品的结构分析可以看出该塑件模具的结构特点为:塑料产品的倒扣成型应设计在定模侧;制件属于外观件;倒扣深度不深并具成型面积不大。
2 斜侧抽芯机构设计与原理分析
1.浇口套;2.定模固定板;3.A板;4.拔杆;5.斜侧滑块;6.斜侧滑块镶件7.拉料杆;8.定模仁;9.动模仁;10.B板;11.顶针;12.弹簧;13.限位螺丝;14.面针板;
15.底针板;16.动模固定板;17.大拉杆;18.导套
根据夹式台灯上下盖的产品要求设计出来的模具结构图如图2所示,从该结构图可以看出,斜侧抽芯机构主要是由拔杆、斜侧滑块、斜侧滑块镶件等三大部件组成整个结构,拔杆与斜侧滑块部件主要是由T型槽进行配合。在模具注塑成型后,由于2定模固定板与3型腔板(A板)之间有12弹簧的弹力作用下,模具分型面PL1先开,由于4拔杆固定在2定模固定龙源期刊网
16 Die and Mould Technology No3.2008
文章编号:1001—4934(2008)03—0016—02
注塑模具二次延迟抽芯滑块机构
畅国帏 ,周 华
(1.顺德职业技术学院,广东佛山 528300;2.番禺职业技术学院,广东 番禺 511483)
0 摘 要:通过手柄零件侧抽芯孔位发生拉花或者拖花的实际案例,介绍了在侧抽芯的
滑块上采用延迟抽芯机构的方法,研究和分析了零件侧向孔位拉花的原因,提出了在 抽出孔芯的同时仍有部分滑块压在零件侧面的解决方案,给出了实现二次抽芯延迟机
构的具体方案,实现了拉花问题的完全解决,推出了一种新的可应用的滑块二次抽芯
结构,得出在实际生产这种结构可成功应用的结论。
关键词:延迟抽芯;滑块;二次脱模;注塑;二次抽芯
中图分类号:TG241 文献标识码:B
Abstract:Through the case of the scratching on the side core—loosing hole for a plastic han— die part,the method of using delayed core—loosing mechanism on the slide block was intro—
duced.The reasons for side hole scratching were analyzed.When the side core was loosed, the plastic part s side was still partly pressed by the slide.This problem could be solved by
the secondary core—loosing mechanism,which structure was elaborated.The newly presen— ted slide mechanism for secondary delayed core—loosing had totally addressed the above scratching problem,and it has been proved applicable in practical manufacturing. Keywords:delayed core—loosing;slide block;secondary demolding;plastic injection;sec— ondary core—loosing
工 程 塑 料 应 用ENGINEERING PLASTICS APPLICATION第46卷,第9期2018年9月Vol.46,No.9Sep. 201894
doi:10.3969/j.issn.1001-3539.2018.09.017
周转箱注塑模具及其四侧面滑块推出脱模机构设计
范国良,路英华
(浙江工商职业技术学院现代模具学院,浙江宁波 315012 )
摘要:结合塑料周转箱产品的生产需要,设计了一种一模一腔点浇口4次分型的三板模非标式模具结构。设计了针对产品6个面的不同脱模方式及其脱模机构:主型芯面采用气吹辅助顶出方式脱模,主型腔面采用四面哈呋滑块联动式推出方式脱模。针对侧面侧凹仅需单向抽芯的脱模,采用油缸驱动+斜导柱驱动滑块机构对其进行侧抽芯脱模;针对带有倒扣的侧面侧凹抽芯脱模,则采用一种子母滑块两次侧抽芯机构来实施复合抽芯脱模。子母滑块机构中,利用驱动块通过3次转向驱动预先完成侧面垂直倒扣的脱模,而后通过斜导柱驱动母滑块来完成整个侧面的侧抽芯脱模。子母滑块机构能有效地利用模板机构的动作动力来进行二次驱动以实现局部复杂特征的脱模,简化了脱模机构的设计,降低了模具的结构成本。模具结构及脱模机构结构设计新颖、合理,模具动作可靠,能为同类产品的模具设计提供有益借鉴。关键词:四侧面抽芯;子母滑块;脱模;模具结构;机构设计中图分类号:TQ320.662 文献标识码:A 文章编号:1001-3539(2018)09-0094-06
Design of Injection Mould with Four Sides Slider Ejection Demoulding Mechanism for Returnable Container
Fan Guoliang, Lu Yinghua(Zhejiang Business Technology Institute Modern mould Institute, Ningbo 315012, China)Abstract:Combined with the production needs of plastic returnable container products,a three-plate model non-standard mould structure with one cavity and one mould,pin-point gate and four times parting line is designed. Different demoulding modes and demoulding mechanism for 6 surfaces of the product are designed,which are that the main core surface is demoulded by air-assisted ejection,and the main cavity surface is demoulded by the way of linkage ejection of the four sides half sliding block. Aimed at the demoulding of only one-way core-pulling in side concave,the sliding block mechanism driven by oil cylinder + angle pin is adopted to carry out the side core-pulling of the side concave. For the side core-pulling of the side concave with undercut,the com-pound core-pulling is carried out by using a primary-secondary sliding block mechanism with twice side core-pulling. In the primary-secondary sliding block mechanism,the demoulding of side vertical undercut is completed in advance by using the drive block through three steering driving,and then the side core-pulling actions of all sides are completed by driving the primary sliding block through the angle pin. The primary-secondary sliding block mechanism can effectively use the action power of the mould plate mech-anism for secondary driving to achieve demoulding of local complex characteristics,simplifying the design of demoulding mecha-nism,reducing the structural cost of the mould. The structure design of mould and demoulding mechanism is novel,reasonable and the mould action is reliable,which can provide beneficial reference for similar products.Keywords:four sides core-pulling;primary-secondary sliding block;demoulding;mould structure;mechanism design