摘要便携式砂带机适用于一般环境条件下,机械、建筑装修、家具油漆等表面的清理、去毛刺、大工作平面整平磨光等作业。砂带机的壳体采用注塑模具设计,用以实现复杂塑件的精确塑形,保证产品质量。83132
首先用SolidWorks软件对壳体零件进行三维建模,并在此过程中分析零件的结构工艺性。根据使用环境和零件各方面的要求选用合适的塑料颗粒,再在塑料所允许的注射机参数范围内根据注塑量选取合适的注塑机,并进行校核。接下来设计两套模具的分型面、浇注系统、成型零件、推出机构等模具结构,通过Moldflow软件分析来选择最合适的浇口位置。根据零件在分型面上的投影面积等参数来对注塑机的锁模力和推出机构进行校核,保证注塑模能正常使用,完成整体设计。最后对整个模具进行三维建模,其中的模板、推杆等零件的尺寸结构都要符合标准,并完成模具整体装配图和零件图的绘制。
在模具设计过程中,采用标准模架,优化工艺设置,减少了模具制造成本和制造难度,对企业模具设计具有指导和借鉴意义。
毕业论文关键词:便携式砂带机;注塑模具;型芯;推出机构;锁模力
Abstract Portable belt machine is suitable for general environmental conditions like machinery、the decoration of construction 、the surface cleaning of furniture paint, etc。 Polishing and leveling large work plane and other operations。 Belt machine housing by injection mold design, to achieve precise shape of complex plastic parts, to ensure the quality of product 。
Initial,using SolidWorks software for three-dimensional modeling of the housing parts, and finish structural analysis of the parts in this process。According to the environment and the requirements of the parts, choose appropriate plastic particles。 Then select a injection molding machine in a range of the plastic allowed, and checking injection quantity。 Next, in the sequence of the sub-surface, gating system, molded parts,release mechanism to design specific structure。 By Moldflow software analysis to select the most appropriate gate location。According to parameters like the projected area of the parting to check on the clamping force of injection molding machine and ejection mechanism of the part to ensure the proper use of injection mold,completing the overall design。 Finally,complete the entire mold structure three-dimensional modeling (which templates and putters select from a standard) and complete the whole assembly drawings and parts drawings。
In the process of mold design, using the standard mold and optimizing process settings to reduce the cost and difficulty of mold manufacturing,has the guidance and the reference significance to the enterprise mold design。
Keywords: Portable belt machine Injection Mold Core Release mechanism Clamping force
目 录
第一章 绪论 -1
1。1 课题研究的意义及目的-1
第二章 壳体成型工艺方案-5
2。1塑件工艺性分析-5
2。1。1 模柄盖-5
2。1。2 机壳5
2。1。3 脱模斜度6
2。2 塑件所用塑料的选择6
2。3 塑件精度和表面质量8
2。4 塑件的体积及质量-8
2。5 注射量校核和注塑机的选择-8
第三章模具结构设计-10
3。1 分型面设计10
3。2 浇注系统设计-10
3。2。1 主流道设计10
3。2。2 分流道设计12
3。2。3 浇口的设计13
3。2。4 冷料穴设计14