摘 要
本次设计的课题为Φ146.6的药瓶及其瓶盖的塑料模具的设计。药瓶的形状是腔大口小，要是采用普通的注射模设计，型芯将难以脱离。虽然可以采用变型芯，但那样会使模具成本大幅度增加，且设计难度比较大。因此药瓶模具为上吹型中空吹塑模具，采用嵌块式结构，铸造水路冷却，结构简单，耐用，便于更换部件，生产效率比较高。模具由动模板、定模板、切割环、模口嵌块、模底嵌块、密封垫板以及固定板等部件组成。瓶盖可以采用普同注射设计，但由于其内部有螺纹，不易采用强行脱模。因此瓶盖模具是两板式，采用旋转脱模的注射模具。该模具自动化程度比较高，效率比较高。该模具由定模板、动模板、支撑板、齿轮轴，圆柱齿轮、圆锥齿轮、齿条等一系列零部件组成。
关键词：定模板 动模板 嵌块 冷却 旋转脱模
Abstract
The program of this design is Φ the medicine bottle of 146.6 and the plastic pattern of its cap have design . the shape of medicine bottle is cavity big mouth little, if design , type core with ordinary injection mould will be hard slip away . may adopt though change type core, can but so make mould cost increase substantially, design difficulty just compare big. therefore the mould of medicine bottle is blow type hollow blow mould mould, adopt inlay piece type structure, casting waterway cool , structure simple, durable, change parts easily, production efficiency is ring and mould high fairly. mould from the fixed die board and board of movable mould , cut mouth inlay piece and mould base inlay piece, gaskets board as well as the etc. parts of fixed head form . cap may adopt general inject design together, but have thread because of its inside, do not be easy adopting force take off mould. therefore cap mould is two board type, adopt spin take off the injection mould of mould have . this mould automation level is mould high fairly, efficiency is high fairly. this mould from fixed die board, the board of movable mould, gripper shoe, gear axle, cylinder gear, cone gear, rack and such a series of component composition.
Keywords: the fixed die board board of movable mould inlay piece cool spin take off
目 录
0．前言 4
1. 总体方案论证 6
1.1 药瓶的模具方案论证 6
1.1.1 药瓶的设计原理 6
1.1.2药瓶的方案选择 6
1.2 瓶盖的模具方案论证 7
1.2.1 瓶盖的模具设计原理 7
1.2.2 瓶盖的模具方案比较 7
2药瓶的模具设计说明 9
2.1中心入料式机头 9
2.2材料的选择和药瓶的测绘 9
2.3注射机的选择 10
2.4型坯下垂与膨胀比 10
2.4模具型腔 11
2.4.1分型面 11
2.4.2型腔表面 11
2.4.3型腔尺寸 11
2.5模具底部嵌块 12
2.6模具颈部嵌块 13
2.7模具排气 13
2.8模具的冷却 15
2.9挤出吹塑机械的操作与保养 16
2.9.1开机与停机 16
2.9.2吹塑模具的保养 17
3瓶盖的模具设计 18
3.1注塑机的选择与型腔个数的计算 18
3.2浇注系统设计 20
3.3冷料井及浇注系统的拉料杆 22
3.4浇口的设计 22
3.5制品形状的冷却 24
3.6导向装置的设计 25
3.7螺纹退芯的设计 25
3.8注塑机操作过程注意事项 27
3.9模具的保养 27
4.预期效果 28
5.结论 29
6.工作小结 30
致谢 31
参考文献 32
附件清单 33
0．前言
12月11日，中国正式成为世贸组织成员。中国加入WTO这个被称为“经济联合国”的组织，中国的各个行业将被进一步开放。作为机械工业行业之一的模具行业也将受到影响。总体来说，应是机遇大于挑战。
