外文翻譯--新一代注塑技術(shù)-預(yù)覽頁
【正文】 independent of the plastic mould products. They are standardponents that can be reused in different mould designs and mould sets. Useful tools (including solid design and analysiscalculation) in the core and the cavity (productdependentparts) design. Geometrical shapes and thesizes of the core and cavity system are determineddirectly by the mould product. All ponents insuch a system are product dependent. Also, theseparts are the critical ponents in the mould design Their geometrical requirements may be , some tools developed to design the core and thecavity based on partial automation and partialinteraction can be quite useful. Design for assembly. In conventional CAD/CAMsystems, moulds are represented and stored as a plete geometric and topological solid model. Thismodel is posed of faces, edges and vertices in athree dimensional (3D) Euclidean space. Such a representationis suitable for visual display and performinggeometrically putationintensive taskssuch as engineering analysis and simulation. However,this form is not appropriate for tasks thatrequire decisionmaking based on highlevel informationabout product geometric entities and theirrelationships. Mould designers prefer a design forassembly environment instead of a simple solid modelenvironment. This idea is also presented in Ye et al.’s work [24]. A design for manufacture. A plete injectionmould design development cycle can be posed ofthe mould design and mould manufacturing integrate CAD/CAM into the mould design, themanufacturing features on the mould should be abstracteand analysed for the specific NC machine. Both the process plan and the NC code should beautomatically generated to enable the final designed mould to be manufactured. A design for engineering drawings. For manypanies, the injection mould design has to be represented in the form of engineering drawingswith detailed dimensions. CAD/CAM tools that are able to automatically generate these engineeringdrawings from the final injection mould design will be on the above analysis, our research focus is todevelop techniques to represent ‘what they have’ and‘what they want’.Representing ‘what they want’ is actually the representationof the knowledge and injection mould ‘what they want’ means to integrate finished piece standard the representation with intelligent and interactive tools forthe injection mould design into a pleted designenvironment. Therefore, an IKBMOULD is proposedfor mould designers to realise the above two requirements 新一代注塑技術(shù) 概述 轉(zhuǎn)位瓶胚注塑技術(shù)是在 Husky 注塑系統(tǒng)雙壓板機器設(shè)計發(fā)展起來的。定壓板上裝有一個標準的熱流道和半陰模。 當機器循環(huán)時 ,塑料首先注射到 A 面。當開模時 ,這一面轉(zhuǎn)位到壓板的頂部表面 ,然后塑料在 B 面注射。制件落在其簾格端頭的傳送器上 ,造成表面擦傷的可能性較小。 瓶性能 我們分析轉(zhuǎn)位系統(tǒng)的一個重要方面是拿這種系統(tǒng)生產(chǎn)的瓶胚制造出來 的瓶的性能與傳統(tǒng)工作單元上生產(chǎn)的類似瓶胚制造出來的瓶相比較。 系統(tǒng)的特點 這種托坯最明顯的好處是需要的模內(nèi)冷卻時間減少了 ,從而減少了整個循環(huán)的時間長度。圖 2 給出循環(huán)細分的比較情況。隨著消除機械手需要的開模間隙減少了 ,隨著模具行程的減少還提高了空循環(huán)速度。與之相伴的還有每英尺地板面積的產(chǎn)量進一步提高。除了較好的視覺效果 ,還導(dǎo)致澆口區(qū)更結(jié)實 ,從而使得整個瓶側(cè)壁區(qū)更好 ,及有更多的機會減輕基礎(chǔ)區(qū)瓶胚的重量。在轉(zhuǎn)位系統(tǒng)中 ,制作在模 芯上收縮 ,從而保持熱傳遞 ,在被頂出時 ,轉(zhuǎn)位瓶胚的全面整體溫度比瓶胚從傳統(tǒng)系統(tǒng)的引出位置取出時要低。與注射量相比這一循環(huán)時間對注射裝置提出非常高的要求 ,注射裝置連續(xù)不斷地沖刷沒有一點滯留時間的螺桿。 他們所擁有的客戶對產(chǎn)品的要求。模具設(shè)計是由一系列細小的環(huán)節(jié)組成的設(shè)計程序。一個注塑模具在其它注塑模里相同的形 狀尺寸分別有型腔具中重 復(fù)使用的大概標準。因此一些模芯設(shè)計工具的發(fā)展方向基于自動生成模具型芯交互作用是相當有 用的。
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