醫(yī)用滴液器注射模具設(shè)計(jì)說明書-展示頁
2025-01-25 11:02本頁面
【正文】 料模具設(shè)計(jì),側(cè)向分型分析,CAD/CAE,塑料顧問,Pro/E IAbstractThe main task of this graduation design is the design of the injection mould for medical drip device. From the plastic parts of the shape and internal structure, need two times side parting and core pulling. The upper part of the side core pulling is forming the throttle valve, and the lower part of the side core pulling and forming the outer threaded portion. From the requirements of plastic parts of the size and the product, the injection mould need high precision, it is also a difficult point of the design. From the design point of view, the threedimensional design involved, especially the application of 3D design in the mold design, the main difficulty lies in the threedimensional mold gate location and type, form, and finally the establishment of 3D assembly realization.The advanced mould CAD/CAE technology is widely used in the design of the injection mould. For example, in the design uses the Pro/E sub module, which greatly simplifies the design of the mould cavity, improves the design efficiency. And the use of Plastic Advisor in the design process, a simple analysis of the plastic parts of the cavity and runner and other important parts, the feasibility of the mold has a guiding role to a certain extent. In the design stage, using the Pro/E optimized, and the 3D assembly, the last generation of 2D part drawing, so the optimization to reduce a lot of work late.Keywords: plastic mold design, lateral type analysis, CAD/CAE, Plastic Advisor, Pro/E.第一章 任務(wù)分析第1章 任務(wù)分析本套塑料注射模具設(shè)計(jì)成型的塑件（）：塑件名稱：醫(yī)用滴液器塑件材質(zhì)：PP（聚丙烯）塑件功能：與醫(yī)用輸液管相接，控制流速塑件尺寸及質(zhì)量要求：見塑件圖 塑件結(jié)構(gòu)分析通過初步對(duì)塑件的三維模型以及二維塑件圖的了解，該塑件屬于超薄件，所以在設(shè)計(jì)的精度控制上會(huì)有一定的壓力，結(jié)構(gòu)還是比較典型的。在細(xì)節(jié)方面，很容易就會(huì)發(fā)現(xiàn)在塑件有一個(gè)節(jié)流閥（）。而塑件上會(huì)有一個(gè)長細(xì)管（），如果通過常規(guī)的澆口形式，很難保證精度要求，這樣無疑也給模具的設(shè)計(jì)上帶來一定的難度。43 塑件名稱：PP（聚丙烯）英文名稱：Polypropylene密度：收縮率：~%注射壓力：70~100Mpa成型時(shí)間：注射時(shí)間 20~60s 保壓時(shí)間 0~3s 冷卻時(shí)間 20~90s成型溫度：230~250℃從上面對(duì)塑件的初步分析，本套模具最大的難點(diǎn)在于需要采用相應(yīng)的機(jī)構(gòu)，從而實(shí)現(xiàn)節(jié)流閥能順利從模具中脫模，并能很好的保證長細(xì)管的精度要求。側(cè)向分型抽芯機(jī)構(gòu)主要分為兩種，一種是外抽，另一種是內(nèi)抽，而本塑件只需要外抽即可。從塑件的三維模型中，我們可以知道，兩者的抽芯距都不是很大，所以可以很方便的使用斜滑塊機(jī)構(gòu)進(jìn)行抽芯，這樣極大的簡化了模具的結(jié)構(gòu)，也降低了模具的制造成本及周期。 塑件澆口位置分析根據(jù)Moldflow的分析可以得到，模具需要采用三板模即可，但是最佳澆口位置不在主分型面上，且如果單純的采用點(diǎn)澆口的方式，巨大的注射壓力會(huì)將型芯沖歪，這樣就很難保證長細(xì)管的精度，擬采用爪型澆口與點(diǎn)澆口結(jié)合的方式，這樣，塑件與澆注系統(tǒng)中的凝料在模具開模過程中會(huì)自動(dòng)分離，塑件的后處理只要將爪型澆口與塑件分離即可。在此基礎(chǔ)上，在Pro/E中排列型腔，初步成型凝料，并導(dǎo)入Moldflow。第2章 模具結(jié)構(gòu)形式的確定方案一：采用斜頂機(jī)構(gòu)進(jìn)行分型，該機(jī)構(gòu)主要由導(dǎo)滑槽、定位銷、斜頂桿、滑塊等零件組裝而成。而在合模時(shí)，側(cè)抽芯在銷以及斜頂桿組成的機(jī)構(gòu)的驅(qū)動(dòng)下，沿著斜孔里面所鎖定的額位置向下滑動(dòng)，使得側(cè)型芯有向下和向外兩個(gè)分運(yùn)動(dòng)，使得側(cè)型芯復(fù)位，為注射循環(huán)做準(zhǔn)備。如果使用斜頂機(jī)構(gòu)，無論從零件的數(shù)量還是復(fù)雜程度，都會(huì)比較大。但是
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